/* ===================================================================
   魔戒 (Mojie) - Crimson Hyperdrive & Deep Onyx Stylesheet
   Pure CSS3 with zero external dependencies for instant sub-second load
   =================================================================== */

:root {
  /* Crimson Hyperdrive & Deep Onyx Palette */
  --color-bg: #08080c;
  --color-bg-secondary: #0f1017;
  --color-bg-card: #151622;
  --color-bg-card-hover: #1c1e2e;
  --color-border: #252838;
  --color-border-bright: #3c4159;
  --color-border-crimson: rgba(239, 68, 68, 0.45);

  /* Primary Accent: Blazing Crimson / Coral Red */
  --color-crimson-light: #fca5a5;
  --color-crimson: #ef4444;
  --color-crimson-hover: #f87171;
  --color-crimson-dark: #b91c1c;
  --color-crimson-glow: rgba(239, 68, 68, 0.4);
  --color-crimson-glow-intense: rgba(239, 68, 68, 0.75);

  /* Secondary Accent: Solar Amber Gold */
  --color-amber-light: #fde68a;
  --color-amber: #f59e0b;
  --color-amber-hover: #fbbf24;
  --color-amber-dark: #b45309;
  --color-amber-glow: rgba(245, 158, 11, 0.35);

  /* Tertiary Accent: Electric Cyber Cyan */
  --color-cyan: #06b6d4;
  --color-cyan-light: #67e8f9;
  --color-cyan-glow: rgba(6, 182, 212, 0.3);

  /* Functional Status Colors */
  --color-success: #10b981;
  --color-success-glow: rgba(16, 185, 129, 0.3);

  /* Typography Colors */
  --color-text-main: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, rgba(239, 68, 68, 0.16) 0%, transparent 45%),
              radial-gradient(circle at 85% 30%, rgba(245, 158, 11, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 15% 70%, rgba(239, 68, 68, 0.08) 0%, transparent 50%),
              var(--color-bg);
  min-height: 100vh;
  animation: pageFadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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 */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Typography & Visual Effects */
.text-center { text-align: center; }

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #fecaca 30%, #f87171 70%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-crimson {
  background: linear-gradient(135deg, #fca5a5 0%, #ef4444 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-amber {
  background: linear-gradient(135deg, #fde68a 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  margin-bottom: 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-full);
  color: #f87171;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  margin-bottom: 16px;
  text-transform: uppercase;
  box-shadow: 0 2px 10px rgba(239, 68, 68, 0.18);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.28;
  margin-bottom: 16px;
  color: var(--color-text-main);
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ===================================================================
   Buttons: Highly Distinct Tactile Appearance
   Clear borders, bevel highlights, distinct elevation, hover states
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.96rem;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  min-height: 48px;
  position: relative;
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-fast);
}

/* Primary Button: Luminous Crimson Hyperdrive */
.btn-primary {
  background: linear-gradient(180deg, #f87171 0%, #ef4444 60%, #dc2626 100%);
  color: #ffffff;
  border: 1.5px solid #fecaca;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55),
              0 4px 16px var(--color-crimson-glow),
              0 2px 4px rgba(0, 0, 0, 0.6);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.btn-primary:hover {
  background: linear-gradient(180deg, #fca5a5 0%, #f87171 60%, #ef4444 100%);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75),
              0 8px 26px var(--color-crimson-glow-intense),
              0 4px 10px rgba(0, 0, 0, 0.7);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.5),
              0 2px 6px var(--color-crimson-glow);
}

/* Secondary Button: High-Contrast Onyx Slate */
.btn-secondary {
  background: linear-gradient(180deg, #1e2230 0%, #11131c 100%);
  color: #f8fafc;
  border: 1.5px solid #33394d;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12),
              0 3px 8px rgba(0, 0, 0, 0.5);
}

.btn-secondary:hover {
  background: linear-gradient(180deg, #2a3045 0%, #171a27 100%);
  border-color: #ef4444;
  color: #fca5a5;
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
              0 6px 18px rgba(0, 0, 0, 0.6),
              0 0 14px rgba(239, 68, 68, 0.35);
}

.btn-secondary:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.5);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
  min-height: 52px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
  min-height: 40px;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   Sticky Navbar: Clear Border & Visual Separation from Body
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(8, 8, 12, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  /* Clear, distinct border separating sticky nav from body */
  border-bottom: 2px solid rgba(239, 68, 68, 0.45);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.85),
              0 1px 0 rgba(245, 158, 11, 0.25);
  transition: all var(--transition-smooth);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-text-main);
  transition: transform var(--transition-fast);
}

.brand-logo:hover {
  transform: scale(1.02);
}

.brand-logo-img {
  height: 38px;
  width: auto;
}

.brand-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #1f1418 0%, #110d12 100%);
  border: 1.5px solid rgba(239, 68, 68, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 12px var(--color-crimson-glow);
}

.brand-logo-icon svg {
  width: 24px;
  height: 24px;
  fill: #ef4444;
}

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

.nav-link {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--color-text-muted);
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: #f87171;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #ef4444, #f59e0b);
  transition: width var(--transition-smooth);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.7);
}

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

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

.mobile-menu-btn {
  display: none;
  color: var(--color-text-main);
  padding: 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

.mobile-drawer {
  display: none;
  flex-direction: column;
  padding: 24px;
  background: var(--color-bg-secondary);
  border-bottom: 2px solid rgba(239, 68, 68, 0.4);
  gap: 16px;
  animation: drawerSlide 0.3s ease-out;
}

@keyframes drawerSlide {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-drawer.open {
  display: flex;
}

/* ===================================================================
   Hero Section: 2-Column Grid with Animated Vector Art on Right
   =================================================================== */
.hero-section {
  position: relative;
  padding: 80px 0 70px 0;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: -15%;
  left: 30%;
  width: 600px;
  height: 450px;
  background: radial-gradient(ellipse, rgba(239, 68, 68, 0.18) 0%, rgba(245, 158, 11, 0.08) 50%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-2 {
  position: absolute;
  top: 10%;
  right: 5%;
  width: 500px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(245, 158, 11, 0.14) 0%, rgba(239, 68, 68, 0.08) 50%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text-col {
  text-align: left;
}

.discount-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.5);
  border-radius: var(--radius-full);
  color: #fca5a5;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 24px;
  box-shadow: 0 4px 18px rgba(239, 68, 68, 0.25);
  animation: pulse-glow 3s infinite alternate ease-in-out;
}

@keyframes pulse-glow {
  0% { box-shadow: 0 0 10px rgba(239, 68, 68, 0.2); }
  100% { box-shadow: 0 0 25px rgba(239, 68, 68, 0.55); }
}

.hero-title {
  font-size: 3.1rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: #ffffff;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: var(--color-text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

/* ===================================================================
   Animated Vector Art Component (Right of H1 Hero Section)
   =================================================================== */
.hero-art-col {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-graphic-wrap {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.art-halo {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(239, 68, 68, 0.2) 0%, rgba(245, 158, 11, 0.1) 45%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.art-vector-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 15px 35px rgba(0, 0, 0, 0.65));
}

/* SVG Internal Keyframes */
.ring-spin-slow {
  transform-origin: center;
  animation: ringRotate 24s linear infinite;
}

.ring-spin-reverse {
  transform-origin: center;
  animation: ringRotateReverse 18s linear infinite;
}

.ring-pulse-center {
  transform-origin: center;
  animation: ringPulse 4s ease-in-out infinite alternate;
}

@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes ringRotateReverse {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

@keyframes ringPulse {
  0% { transform: scale(0.96); opacity: 0.85; }
  100% { transform: scale(1.04); opacity: 1; }
}

/* Floating Badges overlaying the Vector Art */
.art-floating-badge {
  position: absolute;
  background: rgba(17, 18, 28, 0.94);
  border: 1px solid rgba(239, 68, 68, 0.45);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.55),
              0 0 15px rgba(239, 68, 68, 0.2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.86rem;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
  z-index: 2;
  transition: all var(--transition-fast);
}

.art-floating-badge:hover {
  transform: translateY(-4px) scale(1.03);
  border-color: #ef4444;
}

.badge-top-left {
  top: 10%;
  left: -8%;
  animation: floatLevitate 5s ease-in-out infinite alternate;
}

.badge-bottom-right {
  bottom: 12%;
  right: -6%;
  animation: floatLevitate 6s ease-in-out 1s infinite alternate;
  border-color: rgba(245, 158, 11, 0.5);
}

.badge-bottom-left {
  bottom: 8%;
  left: 2%;
  animation: floatLevitate 5.5s ease-in-out 0.5s infinite alternate;
  border-color: rgba(239, 68, 68, 0.45);
}

@keyframes floatLevitate {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-12px); }
}

.ping-indicator {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: #10b981;
  position: relative;
}

.ping-indicator::after {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: rgba(16, 185, 129, 0.4);
  animation: pulsePing 1.8s infinite;
}

@keyframes pulsePing {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* Hero Statistics Horizontal Bar */
.hero-trust-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: rgba(21, 22, 34, 0.85);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  margin-top: 48px;
  backdrop-filter: blur(12px);
  position: relative;
  z-index: 1;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 2.1rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 4px;
}

.stat-unit {
  font-size: 1.05rem;
  color: #f87171;
  margin-left: 2px;
}

.stat-label {
  font-size: 0.86rem;
  color: var(--color-text-muted);
}

/* ===================================================================
   Dynamic Cards Section (Core Features & Streaming/AI)
   =================================================================== */
.features-section {
  padding: 90px 0;
  position: relative;
}

.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 56px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(239, 68, 68, 0.55);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.5), 0 0 20px rgba(239, 68, 68, 0.18);
  background: var(--color-bg-card-hover);
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.85rem;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Media & AI Showcase Cards (2 Columns) */
.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: linear-gradient(145deg, rgba(21, 22, 34, 0.95) 0%, rgba(15, 16, 23, 0.95) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 34px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
  transition: all var(--transition-smooth);
}

.showcase-card:hover {
  border-color: rgba(245, 158, 11, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 16px rgba(245, 158, 11, 0.15);
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.showcase-icon {
  font-size: 2.2rem;
}

.showcase-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
}

.showcase-desc {
  font-size: 0.96rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.7;
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.app-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

.app-tag:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.45);
  color: #fca5a5;
  transform: translateY(-2px);
}

/* ===================================================================
   Pricing Section: High Contrast Cards with Distinct Buttons
   =================================================================== */
.pricing-section {
  padding: 96px 0;
  background: radial-gradient(circle at 50% 50%, rgba(239, 68, 68, 0.08) 0%, transparent 60%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 42px 34px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
}

/* Highlighted "推荐" card with Crimson Frame */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(32, 22, 32, 0.95) 0%, rgba(21, 22, 34, 0.95) 100%);
  border: 2px solid #ef4444;
  box-shadow: 0 10px 35px rgba(239, 68, 68, 0.3);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-8px);
  box-shadow: 0 18px 45px rgba(239, 68, 68, 0.5);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #ffffff;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.6);
}

.pricing-header {
  margin-bottom: 24px;
}

.plan-type {
  font-size: 0.9rem;
  font-weight: 700;
  color: #f87171;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.plan-name {
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
}

.price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 22px 0;
}

.currency {
  font-size: 1.6rem;
  font-weight: 700;
  color: #f87171;
}

.amount {
  font-size: 3.2rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.period {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.plan-summary {
  font-size: 0.94rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 26px;
  min-height: 48px;
}

.features-list {
  list-style: none;
  margin-bottom: 34px;
  flex-grow: 1;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.94rem;
  color: var(--color-text-main);
  margin-bottom: 14px;
}

.feature-check {
  color: #f59e0b;
  font-size: 1.15rem;
  flex-shrink: 0;
}

/* ===================================================================
   Supported Platforms & Download Section
   =================================================================== */
.download-section {
  padding: 90px 0;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.platform-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 34px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.platform-card:hover {
  transform: translateY(-6px);
  border-color: rgba(239, 68, 68, 0.45);
  background: var(--color-bg-card-hover);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
}

.platform-icon {
  width: 66px;
  height: 66px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #f87171;
}

.platform-icon svg {
  width: 34px;
  height: 34px;
  fill: currentColor;
}

.platform-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.platform-clients {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
  flex-grow: 1;
}

/* ===================================================================
   Why Choose Us Section (SEO, GEO & SERP Core)
   =================================================================== */
.why-us-section {
  padding: 96px 0;
  background: rgba(15, 16, 23, 0.6);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.reason-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.reason-card:hover {
  border-color: rgba(239, 68, 68, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

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

.reason-emoji {
  font-size: 1.7rem;
  flex-shrink: 0;
}

.reason-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.reason-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===================================================================
   Secondary Bottom CTA Section
   =================================================================== */
.cta-banner-section {
  padding: 86px 0;
}

.cta-banner-card {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(245, 158, 11, 0.15) 100%),
              var(--color-bg-card);
  border: 1.5px solid rgba(239, 68, 68, 0.45);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.5), 0 0 25px rgba(239, 68, 68, 0.15);
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: #ffffff;
}

.cta-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 660px;
  margin: 0 auto 34px auto;
  line-height: 1.7;
}

/* ===================================================================
   Testimonials Marquee Section
   =================================================================== */
.testimonials-section {
  padding: 86px 0;
  overflow: hidden;
}

.marquee-container {
  width: 100%;
  overflow: hidden;
  position: relative;
  padding: 16px 0;
}

.marquee-container::before,
.marquee-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 140px;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.marquee-container::before {
  left: 0;
  background: linear-gradient(90deg, var(--color-bg), transparent);
}

.marquee-container::after {
  right: 0;
  background: linear-gradient(-90deg, var(--color-bg), transparent);
}

.marquee-track {
  display: flex;
  gap: 26px;
  width: max-content;
  animation: marquee-scroll 45s linear infinite;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.review-card {
  width: 370px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.review-card:hover {
  border-color: rgba(239, 68, 68, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

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

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
}

.review-user-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
}

.review-user-title {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

.review-stars {
  color: #f59e0b;
  font-size: 0.98rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.review-content {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===================================================================
   FAQ Section (<details> and <summary>)
   =================================================================== */
.faq-section {
  padding: 86px 0;
}

.faq-container {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item[open] {
  border-color: rgba(239, 68, 68, 0.45);
  background: var(--color-bg-card-hover);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.faq-question {
  padding: 22px 26px;
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-arrow {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-fast);
  color: #f87171;
  flex-shrink: 0;
}

.faq-item[open] .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 26px 22px 26px;
  font-size: 0.96rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 4px;
  padding-top: 18px;
}

/* ===================================================================
   Footer (Strictly 4 links only as required)
   =================================================================== */
.footer {
  padding: 44px 0;
  background: #050508;
  border-top: 2px solid rgba(239, 68, 68, 0.25);
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  margin-bottom: 22px;
  list-style: none;
}

.footer-link {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #f87171;
}

.footer-copyright {
  font-size: 0.84rem;
  color: var(--color-text-dim);
}

/* ===================================================================
   Auxiliary / Subpage Content Styles
   =================================================================== */
.page-container {
  max-width: 880px;
  margin: 60px auto 100px auto;
  padding: 0 24px;
}

.page-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 50px 42px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}

.page-title {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #ffffff;
}

.page-meta {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  margin-bottom: 34px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
}

.page-content h2 {
  font-size: 1.48rem;
  font-weight: 700;
  margin: 38px 0 16px 0;
  color: #f87171;
}

.page-content p {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 18px;
}

.page-content ul {
  margin-left: 20px;
  margin-bottom: 22px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.page-content li {
  margin-bottom: 10px;
}

.breadcrumb-nav {
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.breadcrumb-nav a {
  color: #f87171;
}

.breadcrumb-nav a:hover {
  text-decoration: underline;
}

/* ===================================================================
   Responsive Breakpoints (@media)
   Mobile-friendly single column and touch friendly
   =================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-text-col {
    text-align: center;
  }
  
  .hero-cta-group {
    justify-content: center;
  }
  
  .badge-top-left {
    left: 4%;
  }
  
  .badge-bottom-right {
    right: 4%;
  }

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

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

@media (max-width: 860px) {
  .cards-grid-3,
  .pricing-grid,
  .media-ai-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-trust-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .nav-links {
    display: none;
  }

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

@media (max-width: 560px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-trust-bar {
    grid-template-columns: 1fr;
    padding: 20px;
  }

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

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

  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }

  .art-floating-badge {
    position: static;
    margin: 8px 0;
    width: 100%;
    justify-content: center;
  }
  
  .badge-top-left, .badge-bottom-right, .badge-bottom-left {
    animation: none;
  }

  .hero-graphic-wrap {
    flex-direction: column;
    height: auto;
    aspect-ratio: auto;
  }

  .art-vector-svg {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* ===================================================================
   Article Hub ("推荐资讯") & Article Reader Styles
   =================================================================== */
.hub-hero {
  padding: 60px 0 40px 0;
  text-align: center;
}

.hub-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #ffffff;
}

.hub-hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.7;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 40px 0 80px 0;
}

.article-tile {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  position: relative;
}

.article-tile:hover {
  transform: translateY(-6px);
  border-color: rgba(239, 68, 68, 0.55);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45), 0 0 16px rgba(239, 68, 68, 0.15);
  background: var(--color-bg-card-hover);
}

.article-tile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.article-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: var(--radius-full);
  color: #f87171;
  font-size: 0.78rem;
  font-weight: 700;
}

.article-tile-date {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

.article-tile-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  color: #ffffff;
  margin-bottom: 14px;
  transition: color var(--transition-fast);
}

.article-tile:hover .article-tile-title {
  color: #f87171;
}

.article-tile-excerpt {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.article-tile-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.86rem;
}

.article-read-link {
  color: #f87171;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-read-link:hover {
  color: #ffffff;
}

.article-reading-time {
  color: var(--color-text-dim);
}

/* Individual Article Reader */
.article-page {
  padding: 40px 0 80px 0;
}

.article-reader-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-header-meta {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.article-main-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.35;
  color: #ffffff;
  margin: 16px 0;
  letter-spacing: -0.5px;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.article-author-info {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: #cbd5e1;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
  margin: 44px 0 18px 0;
  padding-left: 14px;
  border-left: 4px solid #ef4444;
  letter-spacing: -0.3px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #f87171;
  margin: 28px 0 14px 0;
}

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

.article-body strong {
  color: #ffffff;
}

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

.article-body li {
  margin-bottom: 10px;
  line-height: 1.75;
}

.article-body blockquote {
  background: rgba(239, 68, 68, 0.08);
  border-left: 4px solid #ef4444;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 24px;
  margin: 28px 0;
  font-size: 1rem;
  color: #fecaca;
  font-style: normal;
}

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

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
  text-align: left;
}

.article-table th {
  background: var(--color-bg-card);
  color: #f87171;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  font-weight: 700;
}

.article-table td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  color: #cbd5e1;
}

.article-table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.ext-link {
  color: #f87171;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.ext-link:hover {
  color: #fca5a5;
}

.article-callout-card {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15) 0%, rgba(245, 158, 11, 0.1) 100%),
              var(--color-bg-card);
  border: 1.5px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin: 40px 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  text-align: center;
}

.article-callout-card h4 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.article-callout-card p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 20px auto;
  font-size: 0.95rem;
}

.article-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 900px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-main-title {
    font-size: 1.95rem;
  }
}

@media (max-width: 600px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .hub-hero h1 {
    font-size: 2rem;
  }
  .article-main-title {
    font-size: 1.6rem;
  }
  .article-body {
    font-size: 1rem;
  }
}