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

/* CSS Variables */
:root {
  --primary: #e60012;
  --primary-dark: #c4000f;
  --primary-light: #ff1a2e;
  --secondary: #1a1a2e;
  --accent: #ff6b35;
  --text: #333333;
  --text-light: #666666;
  --text-lighter: #999999;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --bg-card: #ffffff;
  --border: #e8e8e8;
  --border-light: #f0f0f0;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1200px;
  --header-height: 70px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
  color: var(--secondary);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 50px;
}

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

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fadeIn {
  animation: fadeIn 0.5s ease-out forwards;
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
}

.logo svg {
  width: 36px;
  height: 36px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  transition: all 0.3s;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(230,0,18,0.05);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(230,0,18,0.08);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(230,0,18,0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(230,0,18,0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-secondary:hover:not(:disabled) {
  background: #2a2a4e;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--primary);
  color: white;
}

.btn-lg {
  padding: 18px 48px;
  font-size: 1.15rem;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + 60px) 0 80px;
  background: linear-gradient(135deg, #fafafa 0%, #f0f0f5 50%, #fafafa 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(230,0,18,0.03) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(230,0,18,0.08);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--secondary);
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--primary);
  position: relative;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-lighter);
}

.hero-meta-item svg {
  width: 16px;
  height: 16px;
  color: var(--success);
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-main {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  animation: float 6s ease-in-out infinite;
}

/* Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform 0.3s;
}

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

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

.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(230,0,18,0.1) 0%, rgba(255,107,53,0.1) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

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

.feature-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--secondary);
}

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

/* Platform Downloads */
.platforms {
  background: var(--bg-light);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.platform-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.platform-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--primary);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-light);
  border-radius: 16px;
}

.platform-icon svg {
  width: 32px;
  height: 32px;
}

.platform-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--secondary);
}

.platform-desc {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.platform-version {
  font-size: 0.8rem;
  color: var(--text-lighter);
  margin-bottom: 16px;
}

/* Detailed Feature Sections */
.detail-section {
  padding: 100px 0;
}

.detail-section:nth-child(even) {
  background: var(--bg-light);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.detail-grid.reverse {
  direction: rtl;
}

.detail-grid.reverse > * {
  direction: ltr;
}

.detail-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(230,0,18,0.08);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.detail-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
  line-height: 1.3;
}

.detail-desc {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.detail-list {
  list-style: none;
}

.detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: var(--text);
}

.detail-list li svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.detail-image {
  position: relative;
}

.detail-image img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Reviews */
.reviews {
  background: var(--bg-light);
}

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

.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-light);
  transition: all 0.3s;
}

.review-card:hover {
  box-shadow: var(--shadow);
}

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

.review-stars svg {
  width: 18px;
  height: 18px;
  color: #ffc107;
  fill: #ffc107;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 1rem;
}

.review-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--secondary);
}

.review-role {
  font-size: 0.8rem;
  color: var(--text-lighter);
}

/* Stats */
.stats {
  background: linear-gradient(135deg, var(--secondary) 0%, #16213e 100%);
  color: white;
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, #ff6b6b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 1rem;
  opacity: 0.8;
}

/* Comparison Table */
.comparison {
  background: var(--bg);
}

.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.comparison-table th {
  background: var(--secondary);
  color: white;
  padding: 16px 24px;
  text-align: left;
  font-weight: 600;
}

.comparison-table th:first-child {
  width: 40%;
}

.comparison-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-light);
}

.comparison-table tr:nth-child(even) {
  background: var(--bg-light);
}

.comparison-table tr:hover {
  background: rgba(230,0,18,0.02);
}

.comparison-table .check {
  color: #22c55e;
}

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

.comparison-table .check svg,
.comparison-table .cross svg {
  width: 20px;
  height: 20px;
}

/* FAQ */
.faq {
  background: var(--bg-light);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid var(--border-light);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--secondary);
  text-align: left;
}

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

.faq-question svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s;
  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 0.3s ease-out;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* Download Page Specific */
.download-hero {
  padding: calc(var(--header-height) + 60px) 0 60px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
  text-align: center;
}

.download-hero-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.download-hero-desc {
  font-size: 1.1rem;
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto 40px;
}

.download-main {
  background: white;
  border-radius: var(--radius);
  padding: 48px;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-hover);
  color: var(--text);
}

.download-main-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, #0078d4 0%, #005a9e 100%);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-main-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.download-main-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--secondary);
}

.download-main-version {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.download-main-size {
  font-size: 0.85rem;
  color: var(--text-lighter);
  margin-bottom: 24px;
}

.download-main-btn {
  width: 100%;
  margin-bottom: 16px;
}

.download-main-meta {
  font-size: 0.8rem;
  color: var(--text-lighter);
}

/* Platform Download Cards (download page) */
.platform-download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.platform-download-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all 0.3s;
}

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

.platform-download-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-download-icon.mac {
  background: linear-gradient(135deg, #555 0%, #333 100%);
}

.platform-download-icon.ios {
  background: linear-gradient(135deg, #007aff 0%, #5856d6 100%);
}

.platform-download-icon.android {
  background: linear-gradient(135deg, #3ddc84 0%, #2db86f 100%);
}

.platform-download-icon svg {
  width: 36px;
  height: 36px;
  color: white;
}

.platform-download-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--secondary);
}

.platform-download-version {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.platform-download-req {
  font-size: 0.8rem;
  color: var(--text-lighter);
  margin-bottom: 20px;
}

.platform-download-steps {
  text-align: left;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-bottom: 20px;
}

.platform-download-steps ol {
  margin: 0;
  padding-left: 18px;
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* Install Guide */
.install-guide {
  background: var(--bg-light);
}

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

.step {
  display: flex;
  gap: 24px;
  margin-bottom: 40px;
  position: relative;
}

.step:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 56px;
  bottom: -24px;
  width: 2px;
  background: var(--border);
}

.step-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step-content {
  flex: 1;
  padding-top: 4px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--secondary);
}

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

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

.sysreq-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-light);
}

.sysreq-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sysreq-title svg {
  width: 24px;
  height: 24px;
}

.sysreq-list {
  list-style: none;
}

.sysreq-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.9rem;
}

.sysreq-list li:last-child {
  border-bottom: none;
}

.sysreq-label {
  color: var(--text-light);
}

.sysreq-value {
  color: var(--secondary);
  font-weight: 500;
}

/* Changelog */
.changelog {
  background: var(--bg-light);
}

.changelog-list {
  max-width: 800px;
  margin: 0 auto;
}

.changelog-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 24px;
  margin-bottom: 16px;
  border-left: 4px solid var(--primary);
}

.changelog-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.changelog-version {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.changelog-date {
  font-size: 0.85rem;
  color: var(--text-lighter);
}

.changelog-badge {
  background: rgba(230,0,18,0.08);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.changelog-changes {
  list-style: none;
}

.changelog-changes li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-light);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.changelog-changes li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}

/* Safety Banner */
.safety-banner {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #bbf7d0;
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.safety-icon {
  width: 60px;
  height: 60px;
  background: #22c55e;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.safety-icon svg {
  width: 30px;
  height: 30px;
  color: white;
}

.safety-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #166534;
  margin-bottom: 8px;
}

.safety-content p {
  font-size: 0.95rem;
  color: #15803d;
  line-height: 1.6;
}

/* SEO Page */
.seo-hero {
  padding: calc(var(--header-height) + 80px) 0 80px;
  background: linear-gradient(135deg, #fafafa 0%, #f5f0f0 50%, #fafafa 100%);
  text-align: center;
}

.seo-hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 20px;
}

.seo-hero-title span {
  color: var(--primary);
}

.seo-hero-desc {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.seo-content {
  max-width: 900px;
  margin: 0 auto;
}

.seo-article {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  margin-bottom: 24px;
  border: 1px solid var(--border-light);
}

.seo-article h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.seo-article h2 svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.seo-article p {
  font-size: 1rem;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 16px;
}

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

.seo-cta-box {
  background: linear-gradient(135deg, rgba(230,0,18,0.05) 0%, rgba(255,107,53,0.05) 100%);
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  margin: 40px 0;
}

.seo-cta-box h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}

.seo-cta-box p {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 24px;
}

/* Keyword Tags */
.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.keyword-tag {
  background: var(--bg-light);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Footer */
.footer {
  background: var(--secondary);
  color: white;
  padding: 50px 0 30px;
}

.footer-content {
  text-align: center;
}

.footer-disclaimer {
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,0.1);
}

.footer-disclaimer p {
  font-size: 0.9rem;
  line-height: 1.7;
  opacity: 0.9;
}

.footer-copyright {
  font-size: 0.85rem;
  opacity: 0.6;
}

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-meta {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

  .detail-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .detail-grid.reverse {
    direction: ltr;
  }

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

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

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

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero {
    padding: calc(var(--header-height) + 40px) 0 50px;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .download-hero-title {
    font-size: 2rem;
  }

  .download-main {
    padding: 32px 20px;
  }

  .nav-link {
    padding: 8px 12px;
    font-size: 0.85rem;
  }

  .logo {
    font-size: 1.1rem;
  }

  .logo svg {
    width: 28px;
    height: 28px;
  }

  .safety-banner {
    flex-direction: column;
    text-align: center;
  }

  .seo-hero-title {
    font-size: 1.8rem;
  }

  .seo-article {
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.7rem;
  }

  .btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
  }

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

  .comparison-table th,
  .comparison-table td {
    padding: 12px 16px;
    font-size: 0.85rem;
  }

  .step {
    gap: 16px;
  }

  .step-number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .step:not(:last-child)::before {
    left: 19px;
  }
}