:root {
  --brand-color: #ff4a22;
  --brand-grad: linear-gradient(135deg, #ff6b35, #e1251b);
  --brand-grad-hover: linear-gradient(135deg, #ff7c4d, #f13c32);
  --accent-blue: #0284c7;
  --accent-blue-grad: linear-gradient(135deg, #38bdf8, #0284c7);
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --radius-xl: 20px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.1);
  --shadow-hover: 0 20px 48px rgba(255, 74, 34, 0.12);
  --container-max: 1200px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
  color: var(--text-main);
  background-color: var(--bg-main);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.6;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
  color: var(--text-main);
}

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

.logo-text {
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

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

.nav-link {
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease, font-weight 0.2s ease;
  padding: 6px 4px;
  position: relative;
}

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

.nav-link.active {
  color: var(--brand-color);
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--brand-grad);
  border-radius: 2px;
}

.header-btn {
  background: var(--brand-grad);
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.header-btn:hover {
  opacity: 0.9;
}

main {
  margin-top: 72px;
}

.section-padding {
  padding: 96px 24px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-grad);
  color: #ffffff;
  border: none;
  padding: 16px 36px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(255, 74, 34, 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 74, 34, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  padding: 16px 36px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: #f8fafc;
  border-color: var(--text-muted);
}

.hero-section {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top right, rgba(255, 107, 53, 0.08), transparent 45%),
              radial-gradient(circle at bottom left, rgba(2, 132, 199, 0.05), transparent 40%);
  padding: 112px 24px 80px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-size: 48px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

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

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-info-row {
  display: flex;
  gap: 24px;
  color: var(--text-muted);
  font-size: 14px;
}

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

.hero-info-row svg {
  width: 16px;
  height: 16px;
  color: #22c55e;
}

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

.hero-illustration svg {
  width: 100%;
  max-width: 440px;
  height: auto;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 12px;
  background-color: rgba(255, 74, 34, 0.08);
  color: var(--brand-color);
  font-weight: 600;
  font-size: 13px;
  border-radius: 50px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 16px;
  color: var(--text-muted);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--brand-grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.feature-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.platforms-section {
  background-color: #ffffff;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.platform-card {
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  text-align: center;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.platform-card:hover {
  border-color: rgba(255, 74, 34, 0.4);
  transform: translateY(-4px);
}

.platform-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-icon svg {
  width: 100%;
  height: 100%;
}

.platform-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

.platform-card button {
  width: 100%;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  background-color: var(--text-main);
  color: #ffffff;
  transition: background-color 0.2s ease;
}

.platform-card button:hover {
  background-color: #334155;
}

.detail-section {
  background: linear-gradient(180deg, #ffffff, var(--bg-main));
}

.detail-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 96px;
}

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

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

.detail-row.reverse .detail-text {
  direction: ltr;
}

.detail-row.reverse .detail-img {
  direction: ltr;
}

.detail-text h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.detail-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.detail-img {
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-img svg {
  width: 100%;
  max-width: 480px;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(15, 23, 42, 0.08));
}

.stats-section {
  background: var(--brand-grad);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

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

.stat-item {
  padding: 24px;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 15px;
  opacity: 0.9;
}

.reviews-section {
  background-color: var(--bg-card);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

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

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--brand-grad);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
}

.review-user h4 {
  font-size: 15px;
  font-weight: 700;
}

.review-stars {
  display: flex;
  gap: 2px;
  margin-top: 4px;
}

.review-stars svg {
  width: 14px;
  height: 14px;
  fill: #f59e0b;
}

.review-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.comparison-section {
  background-color: var(--bg-main);
}

.table-wrapper {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.comparison-table th, .comparison-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-light);
}

.comparison-table th {
  background-color: #f8fafc;
  font-weight: 700;
  color: var(--text-main);
}

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

.comparison-table .wps-col {
  color: var(--brand-color);
  font-weight: 600;
  background-color: rgba(255, 74, 34, 0.01);
}

.comparison-table .badge-yes {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #16a34a;
  font-weight: 600;
}

.comparison-table .badge-no {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-muted);
}

.faq-section {
  background-color: var(--bg-card);
}

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

.faq-item {
  background: var(--bg-main);
  padding: 32px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.faq-question {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

.faq-answer {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.guide-section {
  background-color: var(--bg-card);
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.guide-step {
  position: relative;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
}

.step-num {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: var(--brand-grad);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  box-shadow: 0 4px 10px rgba(255, 74, 34, 0.2);
}

.guide-step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-top: 12px;
  margin-bottom: 8px;
}

.guide-step p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.changelog-section {
  background-color: var(--bg-main);
}

.changelog-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.changelog-item {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.changelog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
}

.changelog-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.changelog-version {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.changelog-tag {
  background-color: rgba(22, 163, 74, 0.1);
  color: #16a34a;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 50px;
}

.changelog-date {
  font-size: 13px;
  color: var(--text-muted);
}

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

.changelog-details li {
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
}

.changelog-details li::before {
  content: "•";
  color: var(--brand-color);
  position: absolute;
  left: 4px;
  font-weight: 700;
}

.changelog-details li:last-child {
  margin-bottom: 0;
}

.seo-rich-section {
  background-color: var(--bg-card);
}

.seo-rich-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
}

.seo-main-article {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.seo-block h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}

.seo-block p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.seo-side-menu {
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  height: fit-content;
}

.seo-side-menu h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 10px;
}

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

.seo-side-list li a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.seo-side-list li a:hover {
  color: var(--brand-color);
}

.cta-banner-wrapper {
  text-align: center;
  padding: 64px 24px;
  background: radial-gradient(circle at center, rgba(255, 74, 34, 0.05), transparent);
  border-radius: var(--radius-xl);
  border: 1px dashed var(--border-light);
  max-width: var(--container-max);
  margin: 0 auto;
}

.cta-banner-wrapper h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-banner-wrapper p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

footer {
  background-color: var(--text-main);
  color: #94a3b8;
  font-size: 13px;
  border-top: 1px solid #1e293b;
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 48px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-text {
  line-height: 1.8;
}

.footer-disclaimer {
  color: #64748b;
  font-size: 12px;
}

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

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-info-row {
    justify-content: center;
  }
  .hero-illustration {
    order: -1;
  }
  .detail-row {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  .detail-row.reverse {
    direction: ltr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .seo-rich-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  header {
    height: 60px;
  }
  main {
    margin-top: 60px;
  }
  .nav-container {
    padding: 0 16px;
  }
  .logo-text {
    font-size: 16px;
  }
  .nav-menu {
    gap: 16px;
  }
  .nav-link {
    font-size: 14px;
  }
  .header-btn {
    display: none;
  }
  .section-padding {
    padding: 64px 16px;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions .btn-primary, .hero-actions .btn-secondary {
    width: 100%;
  }
}