/* ============================================
   WPS Office - Global Styles
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --base-dark: #030712;
  --surface-dark: #0B1120;
  --base-light: #F3F4F6;
  --primary-light: #F8FAFC;
  --secondary-light: #94A3B8;
  --primary-dark: #0F172A;
  --neon-cyan: #00F0FF;
  --neon-purple: #7000FF;
  --vibrant-orange: #FF5E00;
  --font-sans: 'Inter', "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: 'JetBrains Mono', "Courier New", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--base-dark);
  color: var(--primary-light);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

/* ---- Spin Animation (required by download.js) ---- */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- Typography ---- */
.display-title {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.h1-title {
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.h2-title {
  font-size: clamp(28px, 3.5vw, 36px);
  font-weight: 600;
  line-height: 1.3;
}

.h3-title {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
}

.body-text {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--secondary-light);
}

.label-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

/* ---- Layout Utilities ---- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 120px 0;
}

.section-padding-sm {
  padding: 80px 0;
}

/* ---- Glassmorphism ---- */
.glass {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.1);
}

.glass-strong {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(255,255,255,0.12);
}

/* ---- Buttons ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--vibrant-orange), #FF8C00);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 9999px;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 4px 30px rgba(255, 94, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(255, 94, 0, 0.4);
}

.btn-primary:active {
  transform: scale(0.95);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--primary-light);
  font-size: 15px;
  font-weight: 500;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.btn-glow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 48px;
  background: transparent;
  color: var(--primary-light);
  font-size: 16px;
  font-weight: 600;
  border-radius: 9999px;
  border: 2px solid var(--vibrant-orange);
  box-shadow: 0 0 20px rgba(255, 94, 0, 0.2), inset 0 0 20px rgba(255, 94, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.btn-glow:hover {
  box-shadow: 0 0 40px rgba(255, 94, 0, 0.4), inset 0 0 30px rgba(255, 94, 0, 0.1);
  transform: translateY(-2px);
}

/* ---- Navigation ---- */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  background: rgba(3, 7, 18, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: all 0.3s ease;
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-light);
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--secondary-light);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-links a.active {
  color: var(--neon-cyan);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--neon-cyan);
  border-radius: 2px;
}

/* ---- Hero Section ---- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(112, 0, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(255, 94, 0, 0.08) 0%, transparent 50%),
    var(--base-dark);
}

.hero-bg canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--neon-cyan);
  margin-bottom: 32px;
}

.hero-title {
  background: linear-gradient(135deg, var(--primary-light) 30%, var(--neon-cyan) 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--secondary-light);
  max-width: 640px;
  margin: 0 auto 48px;
  line-height: 1.8;
}

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

.hero-platforms {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 48px;
  color: var(--secondary-light);
  font-size: 13px;
}

.hero-platforms span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ---- Feature Cards Section ---- */
.features-section {
  background: var(--base-dark);
  position: relative;
}

.features-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.3), transparent);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 80px;
}

.section-label {
  display: inline-block;
  margin-bottom: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.feature-card {
  padding: 40px 32px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(11, 17, 32, 0.8), rgba(15, 23, 42, 0.6));
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 240, 255, 0.15);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.15);
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  color: var(--neon-cyan);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--primary-light);
}

.feature-card p {
  font-size: 15px;
  color: var(--secondary-light);
  line-height: 1.7;
}

/* ---- Platform Download Section ---- */
.platforms-section {
  background: var(--surface-dark);
  position: relative;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  padding: 40px 24px;
  border-radius: 24px;
  text-align: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.platform-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 240, 255, 0.2);
  background: rgba(0, 240, 255, 0.04);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
  background: rgba(0, 240, 255, 0.06);
}

.platform-icon svg {
  width: 32px;
  height: 32px;
  color: var(--neon-cyan);
}

.platform-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.platform-card p {
  font-size: 13px;
  color: var(--secondary-light);
  margin-bottom: 20px;
}

.platform-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--secondary-light);
  opacity: 0.7;
  margin-bottom: 20px;
}

/* ---- Deep Feature Section ---- */
.deep-features-section {
  background: var(--base-dark);
}

.deep-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 120px;
}

.deep-feature-row:last-child {
  margin-bottom: 0;
}

.deep-feature-row.reverse {
  direction: rtl;
}

.deep-feature-row.reverse > * {
  direction: ltr;
}

.deep-feature-img {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.deep-feature-img img {
  width: 100%;
  height: auto;
  display: block;
}

.deep-feature-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--primary-light);
}

.deep-feature-content p {
  font-size: 16px;
  color: var(--secondary-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.deep-feature-content ul {
  list-style: none;
  margin-top: 20px;
}

.deep-feature-content ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 15px;
  color: var(--secondary-light);
}

.deep-feature-content ul li svg {
  width: 18px;
  height: 18px;
  color: var(--neon-cyan);
  flex-shrink: 0;
  margin-top: 3px;
}

/* ---- Stats Section ---- */
.stats-section {
  background: var(--surface-dark);
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
  padding: 40px 24px;
  border-radius: 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.stat-number {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 12px;
}

.stat-label {
  font-size: 14px;
  color: var(--secondary-light);
}

/* ---- Comparison Section ---- */
.comparison-section {
  background: var(--base-dark);
}

.comparison-table-wrapper {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th {
  padding: 20px 24px;
  text-align: left;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-light);
  background: rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.comparison-table td {
  padding: 18px 24px;
  font-size: 15px;
  color: var(--secondary-light);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.comparison-table tr:hover td {
  background: rgba(255,255,255,0.02);
}

.comparison-table .check {
  color: var(--neon-cyan);
  font-weight: 600;
}

.comparison-table .cross {
  color: #ef4444;
  opacity: 0.6;
}

.comparison-table .highlight {
  color: var(--primary-light);
  font-weight: 500;
}

/* ---- Reviews Section ---- */
.reviews-section {
  background: var(--surface-dark);
}

.reviews-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.review-card {
  padding: 28px 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 16px;
  transition: all 0.3s ease;
}

.review-card:hover {
  border-color: rgba(0, 240, 255, 0.15);
  background: rgba(0, 240, 255, 0.02);
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.review-author {
  font-size: 15px;
  font-weight: 600;
  color: var(--primary-light);
}

.review-role {
  font-size: 12px;
  color: var(--secondary-light);
  opacity: 0.7;
}

.review-stars {
  display: flex;
  gap: 2px;
}

.review-stars svg {
  width: 14px;
  height: 14px;
  color: #fbbf24;
}

.review-text {
  font-size: 14px;
  color: var(--secondary-light);
  line-height: 1.7;
}

.platform-showcase h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
}

.platform-showcase img {
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.08);
}

.platform-downloads {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.plat-dl-card {
  padding: 24px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  transition: all 0.3s ease;
}

.plat-dl-card:hover {
  border-color: rgba(0, 240, 255, 0.2);
}

.plat-dl-card svg {
  width: 28px;
  height: 28px;
  color: var(--neon-cyan);
  margin-bottom: 10px;
}

.plat-dl-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.plat-dl-card p {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--secondary-light);
  opacity: 0.7;
}

/* ---- FAQ Section ---- */
.faq-section {
  background: var(--base-dark);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.faq-question {
  width: 100%;
  padding: 28px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  color: var(--primary-light);
  font-size: 20px;
  font-weight: 600;
  background: none;
  border: none;
  cursor: pointer;
  transition: color 0.2s ease;
}

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

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--secondary-light);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 28px;
}

.faq-answer p {
  font-size: 16px;
  color: var(--secondary-light);
  line-height: 1.8;
}

/* ---- CTA Section ---- */
.cta-section {
  background: var(--surface-dark);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ---- Footer ---- */
.footer {
  background: var(--base-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 40px 0;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.footer-disclaimer {
  font-size: 13px;
  color: var(--secondary-light);
  opacity: 0.6;
  line-height: 1.8;
  margin-bottom: 16px;
}

.footer-copy {
  font-size: 12px;
  color: var(--secondary-light);
  opacity: 0.4;
}

/* ============================================
   DOWNLOAD PAGE STYLES
   ============================================ */

.download-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  overflow: hidden;
}

.download-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(112, 0, 255, 0.12) 0%, transparent 60%),
    var(--base-dark);
}

.download-main-card {
  position: relative;
  z-index: 2;
  max-width: 720px;
  width: 100%;
  padding: 60px 48px;
  border-radius: 32px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  border: 1px solid rgba(255,255,255,0.1);
  text-align: center;
}

.download-main-card .platform-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 9999px;
  font-size: 13px;
  color: var(--neon-cyan);
  margin-bottom: 24px;
}

.download-main-card h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}

.download-main-card .version-info {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--secondary-light);
  margin-bottom: 32px;
}

.download-main-card .file-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.download-main-card .file-meta span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--secondary-light);
  opacity: 0.7;
}

.download-btn-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px 56px;
  background: linear-gradient(135deg, var(--vibrant-orange), #FF8C00);
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  border-radius: 9999px;
  border: none;
  box-shadow: 0 4px 30px rgba(255, 94, 0, 0.3);
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  cursor: pointer;
}

.download-btn-large:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(255, 94, 0, 0.4);
}

.download-btn-large:active {
  transform: scale(0.95);
}

/* Platform download cards */
.platform-download-section {
  background: var(--surface-dark);
}

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

.platform-download-card {
  padding: 40px 32px;
  border-radius: 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.platform-download-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 240, 255, 0.15);
}

.platform-download-card .plat-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: rgba(0, 240, 255, 0.06);
  margin-bottom: 20px;
}

.platform-download-card .plat-icon svg {
  width: 28px;
  height: 28px;
  color: var(--neon-cyan);
}

.platform-download-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.platform-download-card .plat-version {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--secondary-light);
  opacity: 0.7;
  margin-bottom: 20px;
}

.platform-download-card .plat-req {
  font-size: 13px;
  color: var(--secondary-light);
  margin-bottom: 8px;
}

.install-steps {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.install-steps h4 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--primary-light);
}

.install-steps ol {
  list-style: none;
  counter-reset: step;
}

.install-steps ol li {
  font-size: 13px;
  color: var(--secondary-light);
  margin-bottom: 8px;
  padding-left: 28px;
  position: relative;
  line-height: 1.6;
}

.install-steps ol li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.1);
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
}

/* System Requirements */
.sysreq-section {
  background: var(--base-dark);
}

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

.sysreq-card {
  padding: 32px;
  border-radius: 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.sysreq-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sysreq-card h3 svg {
  width: 22px;
  height: 22px;
  color: var(--neon-cyan);
}

.sysreq-table {
  width: 100%;
}

.sysreq-table tr {
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.sysreq-table td {
  padding: 12px 0;
  font-size: 14px;
}

.sysreq-table td:first-child {
  color: var(--secondary-light);
  width: 40%;
}

.sysreq-table td:last-child {
  color: var(--primary-light);
}

/* Changelog */
.changelog-section {
  background: var(--surface-dark);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--neon-cyan), var(--neon-purple));
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  padding-left: 60px;
  padding-bottom: 40px;
}

.timeline-dot {
  position: absolute;
  left: 12px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.timeline-content h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-content .timeline-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-cyan);
  margin-bottom: 12px;
}

.timeline-content p {
  font-size: 15px;
  color: var(--secondary-light);
  line-height: 1.7;
}

.timeline-content ul {
  list-style: none;
  margin-top: 12px;
}

.timeline-content ul li {
  font-size: 14px;
  color: var(--secondary-light);
  margin-bottom: 6px;
  padding-left: 16px;
  position: relative;
}

.timeline-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-cyan);
  opacity: 0.5;
}

/* Security Section */
.security-section {
  background: var(--base-dark);
}

.security-card {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px;
  border-radius: 24px;
  background: rgba(0, 240, 255, 0.02);
  border: 1px solid rgba(0, 240, 255, 0.1);
  text-align: center;
}

.security-card svg {
  width: 48px;
  height: 48px;
  color: var(--neon-cyan);
  margin-bottom: 20px;
}

.security-card h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.security-card p {
  font-size: 15px;
  color: var(--secondary-light);
  line-height: 1.8;
}

.hash-code {
  display: inline-block;
  margin-top: 16px;
  padding: 12px 24px;
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--secondary-light);
  word-break: break-all;
}

/* ============================================
   ZH-CN SEO PAGE STYLES
   ============================================ */

.seo-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px 24px 80px;
  overflow: hidden;
}

.seo-hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 30%, rgba(112, 0, 255, 0.1) 0%, transparent 50%),
    var(--base-dark);
}

.article-section {
  background: var(--base-dark);
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-light);
}

.article-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 40px 0 16px;
  color: var(--primary-light);
}

.article-content p {
  font-size: 16px;
  color: var(--secondary-light);
  line-height: 1.9;
  margin-bottom: 20px;
}

.article-content ul {
  list-style: none;
  margin: 20px 0;
}

.article-content ul li {
  font-size: 16px;
  color: var(--secondary-light);
  line-height: 1.9;
  margin-bottom: 12px;
  padding-left: 28px;
  position: relative;
}

.article-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-cyan);
}

.article-content strong {
  color: var(--primary-light);
  font-weight: 600;
}

.keyword-highlight {
  color: var(--neon-cyan);
  font-weight: 500;
}

.cta-banner {
  max-width: 800px;
  margin: 60px auto 0;
  padding: 48px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.06), rgba(112, 0, 255, 0.08));
  border: 1px solid rgba(0, 240, 255, 0.15);
  text-align: center;
}

.cta-banner h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary-light);
}

.cta-banner p {
  font-size: 16px;
  color: var(--secondary-light);
  margin-bottom: 24px;
}

/* ============================================
   3D CARD MATRIX (Hero decorative)
   ============================================ */

.scene {
  perspective: 1200px;
  margin: 60px auto 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

.matrix-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  transform-style: preserve-3d;
  transform: rotateY(-20deg) rotateX(10deg);
  transition: transform 1.2s cubic-bezier(0.23, 1, 0.32, 1);
}

.matrix-container:hover {
  transform: rotateY(-10deg) rotateX(5deg) scale(1.02);
}

.card-wrapper {
  width: 180px;
  height: 260px;
  transform-style: preserve-3d;
}

.card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  animation: floatFlip 8s infinite ease-in-out alternate;
}

.card-wrapper:nth-child(1) .card { animation-delay: 0s; }
.card-wrapper:nth-child(2) .card { animation-delay: -2s; }
.card-wrapper:nth-child(3) .card { animation-delay: -4s; }
.card-wrapper:nth-child(4) .card { animation-delay: -6s; }

.face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  font-weight: 800;
  color: rgba(255,255,255,0.1);
}

.face.front { background: linear-gradient(135deg, #0B1120, #1e293b); }
.card-wrapper:nth-child(2) .face.front { background: linear-gradient(135deg, #0B1120, #334155); }
.card-wrapper:nth-child(3) .face.front { background: linear-gradient(135deg, #0B1120, #475569); }
.card-wrapper:nth-child(4) .face.front { background: linear-gradient(135deg, #0B1120, #1e3a8a); }

.face.back {
  background: linear-gradient(135deg, #00F0FF, #7000FF);
  transform: rotateY(180deg);
}

.card-wrapper:hover .card {
  transform: translateZ(80px) rotateY(20deg) scale(1.1);
  transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

@keyframes floatFlip {
  0% { transform: translateZ(0px) rotateY(0deg); }
  33% { transform: translateZ(60px) rotateY(15deg); }
  66% { transform: translateZ(30px) rotateY(160deg); }
  100% { transform: translateZ(0px) rotateY(180deg); }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .deep-feature-row {
    gap: 40px;
  }
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .platform-download-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 80px 0;
  }
  .nav-links {
    gap: 16px;
  }
  .nav-links a {
    font-size: 12px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .deep-feature-row {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .deep-feature-row.reverse {
    direction: ltr;
  }
  .platforms-grid {
    grid-template-columns: 1fr;
  }
  .platform-download-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stat-item {
    padding: 24px 16px;
  }
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .download-main-card {
    padding: 40px 24px;
  }
  .sysreq-grid {
    grid-template-columns: 1fr;
  }
  .platform-downloads {
    grid-template-columns: 1fr;
  }
  .matrix-container {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  .card-wrapper {
    width: 140px;
    height: 200px;
  }
  .scene {
    display: none;
  }
  .hero-platforms {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .display-title {
    font-size: 36px;
  }
  .h1-title {
    font-size: 28px;
  }
  .container {
    padding: 0 16px;
  }
  .feature-card {
    padding: 28px 20px;
  }
  .comparison-table th,
  .comparison-table td {
    padding: 12px 16px;
    font-size: 13px;
  }
  .faq-question {
    font-size: 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
}