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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #1f2937;
  background: #ffffff;
  line-height: 1.6;
}

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

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  padding: 0 20px;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: #1e40af;
  text-decoration: none;
}

.nav-brand-ico {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-brand-ico svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

.nav-menu {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-link {
  text-decoration: none;
  color: #6b7280;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-link:hover {
  color: #1e40af;
}

.nav-link.active {
  color: #1e40af;
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #1e40af 0%, #7c3aed 100%);
  border-radius: 2px;
}

.nav-cta {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: transform 0.3s, box-shadow 0.3s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(30, 64, 175, 0.3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #1f2937;
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, #f0f9ff 0%, #f3e8ff 50%, #ecfdf5 100%);
  padding: 80px 20px;
  text-align: center;
  animation: fadeInUp 0.8s ease-out;
}

.hero-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(30, 64, 175, 0.1);
  color: #1e40af;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-tag-dot {
  width: 6px;
  height: 6px;
  background: #1e40af;
  border-radius: 50%;
}

.hero-h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-p {
  font-size: 18px;
  color: #6b7280;
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn {
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(30, 64, 175, 0.4);
}

.btn-secondary {
  background: #f3f4f6;
  color: #1f2937;
  border: 1px solid #e5e7eb;
}

.btn-secondary:hover:not(:disabled) {
  background: #e5e7eb;
  border-color: #d1d5db;
}

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

.hero-visual {
  max-width: 600px;
  margin: 0 auto;
  animation: slideInRight 0.8s ease-out 0.2s both;
}

.hero-visual svg {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(30, 64, 175, 0.15));
}

/* ===== Features Section ===== */
.sec {
  padding: 80px 20px;
}

.sec-light {
  background: #f9fafb;
}

.sec-head {
  max-width: 1200px;
  margin: 0 auto 60px;
  text-align: center;
}

.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(30, 64, 175, 0.1);
  color: #1e40af;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.sec-label-dot {
  width: 6px;
  height: 6px;
  background: #1e40af;
  border-radius: 50%;
}

.sec-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #1f2937;
}

.sec-sub {
  font-size: 16px;
  color: #6b7280;
  line-height: 1.8;
}

.feat-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feat-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
  animation: fadeInUp 0.6s ease-out;
}

.feat-card:hover {
  border-color: #1e40af;
  box-shadow: 0 16px 32px rgba(30, 64, 175, 0.12);
  transform: translateY(-4px);
}

.feat-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.feat-icon svg {
  width: 32px;
  height: 32px;
  fill: #1e40af;
}

.feat-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: #1f2937;
}

.feat-desc {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.8;
}

/* ===== Platform Section ===== */
.plat-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.plat-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}

.plat-card.featured {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
  border: none;
  box-shadow: 0 16px 32px rgba(30, 64, 175, 0.3);
}

.plat-card:hover:not(.featured) {
  border-color: #1e40af;
  box-shadow: 0 12px 24px rgba(30, 64, 175, 0.12);
}

.plat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
}

.plat-icon svg {
  width: 100%;
  height: 100%;
  fill: #1e40af;
}

.plat-card.featured .plat-icon svg {
  fill: #fff;
}

.plat-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.plat-ver {
  font-size: 12px;
  opacity: 0.7;
  margin-bottom: 20px;
}

.plat-btn {
  background: #1e40af;
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
}

.plat-card.featured .plat-btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.plat-btn:hover {
  transform: translateY(-2px);
}

/* ===== Reviews Section ===== */
.rev-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.rev-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 28px;
  transition: all 0.3s;
}

.rev-card:hover {
  border-color: #7c3aed;
  box-shadow: 0 12px 24px rgba(124, 58, 237, 0.12);
}

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

.rev-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
}

.rev-avatar.av-1 { background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%); }
.rev-avatar.av-2 { background: linear-gradient(135deg, #7c3aed 0%, #10b981 100%); }
.rev-avatar.av-3 { background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%); }
.rev-avatar.av-4 { background: linear-gradient(135deg, #06b6d4 0%, #f59e0b 100%); }
.rev-avatar.av-5 { background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%); }
.rev-avatar.av-6 { background: linear-gradient(135deg, #ef4444 0%, #ec4899 100%); }

.rev-meta {
  flex: 1;
}

.rev-name {
  font-size: 14px;
  font-weight: 700;
  color: #1f2937;
}

.rev-role {
  font-size: 12px;
  color: #9ca3af;
}

.rev-stars {
  display: flex;
  gap: 4px;
}

.rev-star {
  width: 16px;
  height: 16px;
  fill: #fbbf24;
}

.rev-text {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.8;
  font-style: italic;
}

/* ===== Comparison Table ===== */
.cmp-wrap {
  max-width: 1200px;
  margin: 0 auto;
  overflow-x: auto;
}

.cmp-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
}

.cmp-table th {
  background: #f9fafb;
  padding: 16px;
  text-align: left;
  font-weight: 700;
  color: #1f2937;
  border-bottom: 1px solid #e5e7eb;
  font-size: 14px;
}

.cmp-table td {
  padding: 16px;
  border-bottom: 1px solid #f3f4f6;
  font-size: 14px;
  color: #6b7280;
}

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

.cmp-hl {
  background: #f0f9ff;
  font-weight: 600;
  color: #1e40af;
}

.cmp-yes {
  color: #10b981;
  font-weight: 600;
}

.cmp-no {
  color: #ef4444;
}

/* ===== FAQ Section ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.faq-item:hover {
  border-color: #1e40af;
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.08);
}

.faq-q {
  padding: 16px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #1f2937;
  user-select: none;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s;
  color: #1e40af;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.faq-item.open .faq-a {
  max-height: 500px;
}

.faq-a-inner {
  padding: 0 16px 16px;
  color: #6b7280;
  line-height: 1.8;
  font-size: 14px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
  margin-top: 80px;
}

.cta-banner-inner {
  max-width: 800px;
  margin: 0 auto;
}

.cta-h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-p {
  font-size: 16px;
  opacity: 0.95;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.cta-btns .btn {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
}

.cta-btns .btn:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
}

/* ===== Footer ===== */
.site-footer {
  background: #1f2937;
  color: #d1d5db;
  padding: 40px 20px;
  text-align: center;
  font-size: 13px;
  line-height: 1.8;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-security {
  color: #10b981;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-note {
  color: #9ca3af;
  font-size: 12px;
}

/* ===== Download Page Specific ===== */
.dl-hero {
  background: linear-gradient(135deg, #f0f9ff 0%, #f3e8ff 50%, #ecfdf5 100%);
  padding: 60px 20px;
  text-align: center;
}

.dl-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(30, 64, 175, 0.1);
  color: #1e40af;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.dl-hero-tag-dot {
  width: 6px;
  height: 6px;
  background: #1e40af;
  border-radius: 50%;
}

.dl-hero-title {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #1f2937;
}

.dl-hero-sub {
  font-size: 16px;
  color: #6b7280;
  margin-bottom: 40px;
}

.dl-main-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

.dl-main-card {
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
  border-radius: 16px;
  padding: 40px;
  margin-bottom: 40px;
  box-shadow: 0 20px 40px rgba(30, 64, 175, 0.3);
}

.dl-main-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.dl-main-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dl-main-icon svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

.dl-main-info {
  flex: 1;
}

.dl-main-name {
  font-size: 24px;
  font-weight: 800;
}

.dl-main-meta {
  font-size: 13px;
  opacity: 0.9;
}

.dl-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.dl-spec {
  text-align: center;
}

.dl-spec-label {
  font-size: 12px;
  opacity: 0.8;
  margin-bottom: 6px;
}

.dl-spec-val {
  font-size: 16px;
  font-weight: 700;
}

.dl-sec-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.2);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  margin-bottom: 24px;
}

.dl-sec-badge svg {
  width: 16px;
  height: 16px;
  fill: #fff;
}

.dl-main-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.dl-main-btns .btn {
  flex: 1;
  min-width: 150px;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #fff;
}

.dl-main-btns .btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.op-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.op-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.op-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
}

.op-icon svg {
  width: 100%;
  height: 100%;
  fill: #1e40af;
}

.op-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.op-ver {
  font-size: 12px;
  color: #9ca3af;
  margin-bottom: 16px;
}

.op-steps {
  text-align: left;
  font-size: 13px;
  color: #6b7280;
}

.op-step {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.op-step-num {
  min-width: 20px;
  height: 20px;
  background: #f3f4f6;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: #1e40af;
}

/* ===== Guide Section ===== */
.guide-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.guide-col-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 24px;
}

.guide-col-dot {
  width: 8px;
  height: 8px;
  background: #1e40af;
  border-radius: 50%;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gstep {
  display: flex;
  gap: 16px;
}

.gstep-num {
  min-width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #1e40af 0%, #7c3aed 100%);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.gstep-body {
  flex: 1;
}

.gstep-title {
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 4px;
}

.gstep-desc {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.6;
}

/* ===== Requirements ===== */
.req-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.req-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.req-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
}

.req-icon svg {
  width: 100%;
  height: 100%;
  fill: #1e40af;
}

.req-title {
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 8px;
}

.req-val {
  font-size: 13px;
  color: #6b7280;
}

/* ===== Version Timeline ===== */
.ver-list {
  max-width: 800px;
  margin: 0 auto;
}

.ver-item {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e5e7eb;
}

.ver-item:last-child {
  border-bottom: none;
}

.ver-dot-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.ver-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #1e40af;
}

.ver-dot.v2 { background: #7c3aed; }
.ver-dot.v3 { background: #10b981; }
.ver-dot.v4 { background: #06b6d4; }
.ver-dot.v5 { background: #f59e0b; }

.ver-line {
  flex: 1;
  width: 2px;
  background: #e5e7eb;
}

.ver-body {
  flex: 1;
  padding-top: 4px;
}

.ver-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.ver-num {
  font-weight: 700;
  color: #1f2937;
}

.ver-tag {
  display: inline-block;
  background: #f3f4f6;
  color: #6b7280;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.ver-tag.stable { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.ver-tag.lts { background: rgba(30, 64, 175, 0.1); color: #1e40af; }
.ver-tag.beta { background: rgba(245, 158, 11, 0.1); color: #f59e0b; }

.ver-date {
  font-size: 12px;
  color: #9ca3af;
}

.ver-desc {
  font-size: 13px;
  color: #6b7280;
  line-height: 1.6;
}

/* ===== Article Page ===== */
.art-hero {
  background: linear-gradient(135deg, #f0f9ff 0%, #f3e8ff 50%, #ecfdf5 100%);
  padding: 60px 20px;
}

.art-hero-inner {
  max-width: 900px;
  margin: 0 auto;
}

.art-hero-crumb {
  font-size: 13px;
  color: #6b7280;
  margin-bottom: 16px;
}

.art-hero-crumb a {
  color: #1e40af;
  text-decoration: none;
}

.art-hero-crumb a:hover {
  text-decoration: underline;
}

.art-hero-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #1f2937;
}

.art-hero-sub {
  font-size: 16px;
  color: #6b7280;
}

.kw-strip {
  max-width: 900px;
  margin: 0 auto 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 20px;
}

.kw {
  display: inline-block;
  background: rgba(30, 64, 175, 0.1);
  color: #1e40af;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.art-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 80px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}

.art-body {
  max-width: 900px;
}

.art-body h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 40px 0 16px;
  color: #1f2937;
}

.art-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: #1f2937;
}

.art-body p {
  margin-bottom: 16px;
  color: #6b7280;
  line-height: 1.8;
}

.art-body ul, .art-body ol {
  margin: 16px 0 16px 24px;
  color: #6b7280;
  line-height: 1.8;
}

.art-body li {
  margin-bottom: 8px;
}

.art-body strong {
  color: #1f2937;
  font-weight: 700;
}

.inline-cta {
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
  border-left: 4px solid #1e40af;
  padding: 20px;
  border-radius: 8px;
  margin: 32px 0;
}

.inline-cta-title {
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 8px;
}

.inline-cta-desc {
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 12px;
}

.inline-cta-btn {
  display: inline-block;
  background: #1e40af;
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s;
}

.inline-cta-btn:hover {
  background: #1e3a8a;
  transform: translateX(2px);
}

.sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.sbox {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.sbox-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  color: #1f2937;
}

.sdl-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  padding: 10px 12px;
  border-radius: 6px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 12px;
  font-weight: 600;
  color: #1f2937;
}

.sdl-btn:hover {
  background: #f3f4f6;
  border-color: #1e40af;
}

.sdl-btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sdl-btn-icon svg {
  width: 100%;
  height: 100%;
  fill: #1e40af;
}

.sdl-btn-info {
  flex: 1;
}

.sdl-btn-name {
  display: block;
  font-weight: 700;
}

.sdl-btn-ver {
  display: block;
  font-size: 11px;
  color: #9ca3af;
}

.stoc {
  font-size: 13px;
  color: #6b7280;
}

.stoc a {
  display: block;
  color: #1e40af;
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.3s;
}

.stoc a:hover {
  color: #7c3aed;
}

.sstat {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sstat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sstat-num {
  font-size: 18px;
  font-weight: 800;
  color: #1e40af;
}

.sstat-lbl {
  font-size: 12px;
  color: #6b7280;
}

.side-security {
  background: rgba(16, 185, 129, 0.1);
  border-left: 4px solid #10b981;
  padding: 12px;
  border-radius: 6px;
  font-size: 12px;
  color: #047857;
  line-height: 1.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 16px 20px;
    gap: 12px;
  }

  .hero-h1 {
    font-size: 32px;
  }

  .sec-title {
    font-size: 28px;
  }

  .feat-grid, .plat-grid, .rev-grid, .req-grid, .op-grid {
    grid-template-columns: 1fr;
  }

  .art-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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

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

  .hero-btns, .cta-btns, .dl-main-btns {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}