/*
 * WPS Office Amethyst Intelligence Theme
 * Premium Custom Landing Page Stylesheet
 * 2026 wps4.com.cn
 */

:root {
  --color-primary: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #7c3aed;
  --color-secondary-light: #a78bfa;
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;
  --color-accent-rgb: 245, 158, 11;
  --color-bg-dark: #0f172a;
  --color-bg-light: #f8fafc;
  --color-text-dark: #0f172a;
  --color-text-muted: #64748b;
  --color-text-light: #f8fafc;
  --primary-gradient: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --dark-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --box-shadow: 0 10px 30px -10px rgba(79, 70, 229, 0.1);
  --box-shadow-hover: 0 20px 40px -15px rgba(79, 70, 229, 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Global Styles */
*, *::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: var(--font-family);
  background-color: #ffffff;
  color: #334155;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-bg-dark);
  font-weight: 700;
  line-height: 1.25;
}

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

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

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

/* Base Layout Containers */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section-padding {
  padding-top: 80px;
  padding-bottom: 80px;
}

@media (max-width: 768px) {
  .section-padding {
    padding-top: 50px;
    padding-bottom: 50px;
  }
}

/* Sticky Header with Glassmorphism */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(79, 70, 229, 0.1);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-bg-dark);
}

.logo-text span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: #475569;
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
  position: relative;
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: rgba(79, 70, 229, 0.05);
}

/* Active Nav State */
.nav-link.active {
  color: var(--color-primary);
  background: rgba(79, 70, 229, 0.1);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 20%;
  width: 60%;
  height: 3px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.header-cta .btn {
  padding: 10px 24px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  z-index: 110;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-bg-dark);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 992px) {
  .mobile-menu-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 40px 24px;
    gap: 24px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.4s ease, opacity 0.3s ease;
    border-top: 1px solid rgba(79, 70, 229, 0.1);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1.2rem;
    width: 100%;
    text-align: center;
    padding: 12px;
  }
}

/* Custom Buttons Styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  transition: var(--transition);
  gap: 8px;
  text-align: center;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
}

.btn-secondary:hover:not(:disabled) {
  background-color: rgba(79, 70, 229, 0.05);
  border-color: var(--color-primary);
}

.btn-dark {
  background-color: var(--color-bg-dark);
  color: #ffffff;
}

.btn-dark:hover:not(:disabled) {
  background-color: #1e293b;
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.btn-accent:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.125rem;
}

.btn-md {
  padding: 12px 28px;
  font-size: 1rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Animations */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
  70% { box-shadow: 0 0 0 12px rgba(124, 58, 237, 0); }
  100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
}

.float-img {
  animation: float 6s ease-in-out infinite;
}

.pulse-button {
  animation: pulseGlow 2s infinite;
}

/* Section Header Utility */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px auto;
}

.section-header .badge {
  display: inline-block;
  background-color: rgba(79, 70, 229, 0.1);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: 2.25rem;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .section-header h2 {
    font-size: 1.75rem;
  }
}

/* --- HERO SECTION --- */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, rgba(248, 250, 252, 0.9) 0%, rgba(241, 245, 249, 0.9) 100%);
  overflow: hidden;
  padding-top: 100px;
  padding-bottom: 100px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  z-index: 1;
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
  border-radius: 50%;
  z-index: 1;
}

.hero-container {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-content h1 span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.hero-description {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 992px) {
  .hero-actions {
    justify-content: center;
  }
}

.hero-meta {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

@media (max-width: 992px) {
  .hero-meta {
    justify-content: center;
  }
}

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

.hero-illustration {
  display: flex;
  justify-content: center;
}

.hero-card-wrapper {
  position: relative;
  background-color: #ffffff;
  padding: 24px;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 25px 50px -12px rgba(79, 70, 229, 0.15);
  border: 1px solid rgba(79, 70, 229, 0.08);
  max-width: 480px;
  width: 100%;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.hero-app-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hero-app-title h3 {
  font-size: 1.25rem;
}

.hero-app-title p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.hero-card-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-bullet {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 0.9375rem;
}

.hero-bullet svg {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 4px;
}

/* --- FEATURE CARDS (HOMEPAGE) --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 992px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background-color: #ffffff;
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: var(--box-shadow);
  border: 1px solid rgba(241, 245, 249, 0.8);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-gradient);
  transform: scaleY(0);
  transition: var(--transition);
  transform-origin: bottom;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--box-shadow-hover);
  border-color: rgba(79, 70, 229, 0.15);
}

.feature-card:hover::before {
  transform: scaleY(1);
}

.feature-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: rgba(79, 70, 229, 0.08);
  color: var(--color-primary);
  border-radius: 12px;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* --- DOWNLOAD PLATFORMS GRID --- */
.download-platforms {
  background-color: var(--color-bg-light);
}

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

@media (max-width: 1024px) {
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .platforms-grid {
    grid-template-columns: 1fr;
  }
}

.platform-card {
  background-color: #ffffff;
  border-radius: var(--border-radius-md);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--box-shadow);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition);
}

.platform-card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, 0.15);
  box-shadow: var(--box-shadow-hover);
}

.platform-icon {
  margin-bottom: 20px;
  color: var(--color-primary);
}

.platform-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.platform-card .specs {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  margin-bottom: 24px;
}

.platform-card .btn {
  width: 100%;
  margin-top: auto;
}

/* --- DEEP FEATURE DETAIL ROWS --- */
.detail-rows {
  background-color: #ffffff;
}

.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.detail-row:not(:last-child) {
  margin-bottom: 80px;
}

@media (max-width: 992px) {
  .detail-row {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }
  .detail-row:nth-child(even) .detail-img-col {
    order: 2;
  }
  .detail-row:nth-child(even) .detail-text-col {
    order: 1;
  }
}

.detail-img-col {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(124, 58, 237, 0.03) 100%);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  border: 1px solid rgba(79, 70, 229, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-img-panel {
  background-color: #ffffff;
  border-radius: var(--border-radius-md);
  padding: 24px;
  box-shadow: 0 15px 35px rgba(15, 23, 42, 0.08);
  width: 100%;
  max-width: 480px;
}

.detail-text-col .tag {
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.detail-text-col h3 {
  font-size: 1.875rem;
  margin-bottom: 16px;
}

.detail-text-col p {
  color: var(--color-text-muted);
  margin-bottom: 24px;
  font-size: 1.0625rem;
}

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

@media (max-width: 992px) {
  .detail-features-list {
    align-items: center;
  }
}

.detail-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.9375rem;
}

.detail-feature-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --- STATS SECTION --- */
.stats-section {
  background: var(--dark-gradient);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 10;
}

@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

.stat-item {
  text-align: center;
  padding: 16px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 1rem;
  color: #94a3b8;
  font-weight: 500;
}

/* --- COMPARISON MATRIX TABLE --- */
.comparison-section {
  background-color: #ffffff;
}

.table-wrapper {
  overflow-x: auto;
  background-color: #ffffff;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--box-shadow);
  border: 1px solid rgba(79, 70, 229, 0.05);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 700px;
}

.comparison-table th, .comparison-table td {
  padding: 20px 24px;
  border-bottom: 1px solid #f1f5f9;
}

.comparison-table th {
  font-size: 1.125rem;
  font-weight: 700;
  background-color: #f8fafc;
}

.comparison-table th:first-child {
  border-top-left-radius: var(--border-radius-lg);
}

.comparison-table th:last-child {
  border-top-right-radius: var(--border-radius-lg);
}

.comparison-table tr:hover td {
  background-color: rgba(79, 70, 229, 0.02);
}

.comparison-table td:first-child {
  font-weight: 600;
  color: var(--color-bg-dark);
}

.highlight-col {
  background-color: rgba(79, 70, 229, 0.04);
  font-weight: 700;
  color: var(--color-primary);
}

.text-success {
  color: #10b981;
  font-weight: 700;
}

.text-danger {
  color: #ef4444;
}

/* --- REVIEWS SLIDER SECTION --- */
.reviews-section {
  background-color: var(--color-bg-light);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 992px) {
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

.review-card {
  background-color: #ffffff;
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(241, 245, 249, 0.8);
  display: flex;
  flex-direction: column;
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  color: var(--color-accent);
}

.review-content {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: 24px;
  font-style: italic;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.author-info h4 {
  font-size: 0.9375rem;
}

.author-info p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* --- FAQ SECTION ACCORDION --- */
.faq-section {
  background-color: #ffffff;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid rgba(79, 70, 229, 0.03);
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(79, 70, 229, 0.15);
  box-shadow: var(--box-shadow);
  background-color: #ffffff;
}

.faq-question {
  width: 100%;
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-bg-dark);
  text-align: left;
}

.faq-icon {
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 24px;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}

/* --- DOWNLOAD HUB SPECIFICS (download.html) --- */
.download-hero-card {
  background: var(--dark-gradient);
  color: #ffffff;
  border-radius: var(--border-radius-lg);
  padding: 64px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 60px -15px rgba(15, 23, 42, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
  .download-hero-card {
    padding: 32px 24px;
  }
}

.download-hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 10;
}

@media (max-width: 992px) {
  .download-hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.dl-hero-title h1 {
  color: #ffffff;
  font-size: 3rem;
  margin-bottom: 16px;
}

.dl-hero-title p {
  color: #94a3b8;
  font-size: 1.125rem;
  margin-bottom: 32px;
}

.dl-main-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  margin-top: 24px;
  font-size: 0.875rem;
  color: #94a3b8;
}

@media (max-width: 992px) {
  .dl-main-meta {
    justify-content: center;
  }
}

.dl-hero-badge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.dl-badge-box {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.dl-badge-icon {
  color: var(--color-accent);
}

.dl-badge-info h4 {
  color: #ffffff;
  font-size: 1rem;
  margin-bottom: 4px;
}

.dl-badge-info p {
  color: #94a3b8;
  font-size: 0.8125rem;
}

/* Timeline Installation Guides */
.install-guide-section {
  background-color: #ffffff;
}

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

.timeline::after {
  content: '';
  position: absolute;
  width: 2px;
  background-color: rgba(79, 70, 229, 0.15);
  top: 0;
  bottom: 0;
  left: 32px;
  margin-left: -1px;
}

.timeline-item {
  padding: 10px 30px 40px 80px;
  position: relative;
}

.timeline-number {
  position: absolute;
  width: 48px;
  height: 48px;
  left: 8px;
  top: 6px;
  background: var(--primary-gradient);
  border-radius: 50%;
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.2);
}

.timeline-content {
  padding: 24px;
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(79, 70, 229, 0.03);
}

.timeline-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.timeline-content p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Specs Matrix */
.specs-section {
  background-color: var(--color-bg-light);
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

@media (max-width: 992px) {
  .specs-grid {
    grid-template-columns: 1fr;
  }
}

.spec-card {
  background-color: #ffffff;
  border-radius: var(--border-radius-md);
  padding: 32px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
}

.spec-card h3 {
  font-size: 1.25rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-primary);
}

.spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid #f1f5f9;
  padding-bottom: 12px;
  font-size: 0.9375rem;
}

.spec-label {
  color: var(--color-text-muted);
  font-weight: 500;
}

.spec-value {
  font-weight: 600;
  color: var(--color-bg-dark);
}

/* Changelogs Timeline */
.changelog-section {
  background-color: #ffffff;
}

.changelog-timeline {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.changelog-card {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius-md);
  padding: 32px;
  border: 1px solid rgba(79, 70, 229, 0.05);
}

.changelog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

@media (max-width: 576px) {
  .changelog-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

.changelog-ver {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}

.changelog-date {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

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

.changelog-point {
  display: flex;
  gap: 12px;
  font-size: 0.9375rem;
}

.changelog-point svg {
  color: #10b981;
  flex-shrink: 0;
  margin-top: 4px;
}

/* Security Shield Guarantee */
.security-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(5, 150, 105, 0.05) 100%);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .security-banner {
    flex-direction: column;
    text-align: center;
    padding: 32px 20px;
  }
}

.security-icon {
  color: #10b981;
  background-color: rgba(16, 185, 129, 0.1);
  padding: 16px;
  border-radius: 50%;
  flex-shrink: 0;
}

.security-content h3 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  color: #065f46;
}

.security-content p {
  color: #047857;
  font-size: 0.9375rem;
}

/* --- SEO ENTRY PAGE (zh-cn.html) --- */
.magazine-container {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 48px;
  margin-top: 48px;
}

@media (max-width: 992px) {
  .magazine-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.article-column {
  background-color: #ffffff;
}

.article-content {
  font-size: 1.0625rem;
  color: #334155;
  line-height: 1.8;
}

.article-content p {
  margin-bottom: 24px;
}

.article-content h2 {
  font-size: 1.75rem;
  margin-top: 40px;
  margin-bottom: 20px;
  color: var(--color-bg-dark);
  position: relative;
  padding-left: 16px;
}

.article-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.article-content h3 {
  font-size: 1.35rem;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--color-bg-dark);
}

.tip-card-magazine {
  background-color: var(--color-bg-light);
  border-left: 4px solid var(--color-primary);
  padding: 24px;
  margin: 32px 0;
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

.tip-card-magazine h4 {
  font-size: 1.125rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.sidebar-column {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sidebar-widget {
  background-color: var(--color-bg-light);
  border-radius: var(--border-radius-md);
  padding: 28px;
  border: 1px solid rgba(79, 70, 229, 0.05);
}

.sidebar-widget h3 {
  font-size: 1.15rem;
  margin-bottom: 20px;
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 12px;
}

.pro-tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pro-tip-item {
  display: flex;
  gap: 12px;
  font-size: 0.9375rem;
}

.pro-tip-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 4px;
}

.pro-tip-desc h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.pro-tip-desc p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.env-check-widget {
  text-align: center;
}

.env-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(16, 185, 129, 0.1);
  color: #10b981;
  font-weight: 700;
  font-size: 0.8125rem;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.env-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
  margin-bottom: 20px;
}

.env-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
}

.env-val {
  font-weight: 600;
  color: var(--color-primary);
}

/* Call-to-action bar/widget */
.cta-banner {
  background: var(--primary-gradient);
  color: #ffffff;
  border-radius: var(--border-radius-lg);
  padding: 56px;
  text-align: center;
  margin-top: 64px;
  box-shadow: 0 20px 40px -10px rgba(79, 70, 229, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  color: #ffffff;
  font-size: 2.25rem;
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin: 0 auto 32px auto;
  font-size: 1.125rem;
}

/* --- FOOTER STYLING --- */
.site-footer {
  background-color: var(--color-bg-dark);
  color: #94a3b8;
  padding: 48px 24px;
  border-top: 1px solid #1e293b;
  font-size: 0.875rem;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.125rem;
  margin-bottom: 16px;
}

.footer-text {
  margin-bottom: 16px;
  line-height: 1.8;
}

.footer-claim {
  color: #38bdf8;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-divider {
  height: 1px;
  background-color: rgba(255, 255, 255, 0.08);
  margin: 24px 0;
}

.footer-copyright {
  color: #64748b;
  font-size: 0.8125rem;
}