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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #1a1a1a;
  background: #ffffff;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ============ Navigation ============ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e5e5e5;
  padding: 0;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 70px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #1a1a1a;
  text-decoration: none;
}

.nav-brand-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 40px;
  list-style: none;
}

.nav-link {
  color: #666;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: #2563eb;
}

.nav-link.active {
  color: #2563eb;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 3px;
  background: #2563eb;
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #1a1a1a;
}

@media (max-width: 768px) {
  .nav-menu {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: white;
    border-bottom: 1px solid #e5e5e5;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-menu.show {
    max-height: 300px;
  }

  .nav-link {
    display: block;
    padding: 15px 20px;
    border-bottom: 1px solid #f0f0f0;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: #f5f5f5;
  }

  .nav-toggle {
    display: block;
  }
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: #f0f0f0;
  color: #1a1a1a;
}

.btn-secondary:hover {
  background: #e5e5e5;
}

.btn-outline {
  background: transparent;
  border: 2px solid #2563eb;
  color: #2563eb;
}

.btn-outline:hover {
  background: #f0f7ff;
}

.btn-white {
  background: white;
  color: #1a1a1a;
  border: 1px solid #e5e5e5;
}

.btn-white:hover {
  border-color: #2563eb;
  color: #2563eb;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* ============ Sections ============ */
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.sec {
  padding: 80px 20px;
}

.sec-dark {
  background: #0f172a;
  color: white;
}

.sec-light {
  background: #f8fafc;
}

.sec-head {
  text-align: center;
  margin-bottom: 60px;
}

.sec-tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.sec-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}

.sec-dark .sec-title {
  color: white;
}

.sec-sub {
  font-size: 18px;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.sec-dark .sec-sub {
  color: #a0a0a0;
}

/* ============ Hero ============ */
.hero {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  padding: 100px 20px;
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #1a1a1a;
}

.hero-text p {
  font-size: 18px;
  color: #666;
  margin-bottom: 30px;
  line-height: 1.6;
}

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

.hero-badges {
  display: flex;
  gap: 20px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid #e5e5e5;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #666;
}

.hero-badge-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2563eb;
}

.hero-visual {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-visual svg {
  width: 100%;
  height: 100%;
  max-width: 500px;
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

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

  .hero-visual {
    height: 300px;
  }
}

/* ============ Features Grid ============ */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 0;
}

.feat-card {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 32px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563eb, #1d4ed8);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feat-card:hover {
  border-color: #2563eb;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

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

.feat-icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: #2563eb;
}

.feat-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #1a1a1a;
}

.feat-desc {
  font-size: 15px;
  color: #666;
  line-height: 1.6;
}

/* ============ Platforms ============ */
.plat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.plat-card {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.plat-card.featured {
  border-color: #2563eb;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(37, 99, 235, 0.02));
}

.plat-card:hover {
  border-color: #2563eb;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
  transform: translateY(-4px);
}

.plat-badge {
  display: inline-block;
  background: #2563eb;
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.plat-icon {
  width: 56px;
  height: 56px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #2563eb;
  font-size: 28px;
}

.plat-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1a1a1a;
}

.plat-ver {
  font-size: 13px;
  color: #999;
  margin-bottom: 16px;
}

.plat-desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
  line-height: 1.5;
}

.plat-btn {
  width: 100%;
}

/* ============ Comparison Table ============ */
.cmp-wrap {
  overflow-x: auto;
}

.cmp-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

.cmp-table th,
.cmp-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid #e5e5e5;
}

.cmp-table th {
  background: #f8fafc;
  font-weight: 600;
  color: #1a1a1a;
  font-size: 14px;
}

.cmp-table td {
  font-size: 14px;
  color: #666;
}

.cmp-hl {
  font-weight: 600;
  color: #1a1a1a;
}

.yes {
  color: #16a34a;
  font-weight: 600;
}

.no {
  color: #dc2626;
  font-weight: 600;
}

.part {
  color: #f59e0b;
  font-weight: 600;
}

/* ============ FAQ ============ */
.faq-list {
  list-style: none;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: #2563eb;
}

.faq-q {
  padding: 20px;
  background: white;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #1a1a1a;
  user-select: none;
  transition: background 0.3s ease;
}

.faq-item:hover .faq-q {
  background: #f8fafc;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2563eb;
  transition: transform 0.3s ease;
}

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

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

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

.faq-a-inner {
  padding: 0 20px 20px;
  color: #666;
  line-height: 1.6;
  font-size: 15px;
}

/* ============ CTA Banner ============ */
.cta-banner {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
  border-radius: 12px;
}

.cta-title {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 18px;
  margin-bottom: 32px;
  opacity: 0.95;
}

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

/* ============ Download Page ============ */
.dl-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
}

.dl-hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.dl-hero-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}

.dl-hero-sub {
  font-size: 18px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.dl-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}

.dl-win-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
  margin-bottom: 40px;
}

.dl-win-top {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: white;
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.dl-win-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

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

.dl-win-name {
  font-size: 20px;
  font-weight: 600;
}

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

.dl-win-body {
  padding: 32px;
}

.dl-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.dl-spec {
  padding-bottom: 24px;
  border-bottom: 1px solid #e5e5e5;
}

.dl-spec:last-child {
  border-bottom: none;
}

.dl-spec-label {
  font-size: 13px;
  color: #999;
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.dl-spec-val {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a1a;
}

.dl-sec-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #f0fdf4;
  color: #16a34a;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}

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

.dl-win-btns .btn {
  flex: 1;
  min-width: 150px;
}

/* ============ Other Platforms ============ */
.op-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}

.op-card {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.op-icon {
  width: 56px;
  height: 56px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #2563eb;
  font-size: 28px;
}

.op-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #1a1a1a;
}

.op-ver {
  font-size: 13px;
  color: #999;
  margin-bottom: 16px;
}

.op-steps {
  text-align: left;
  margin-bottom: 20px;
}

.op-step {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: #666;
}

.op-step-num {
  min-width: 24px;
  height: 24px;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 12px;
}

/* ============ Installation Guide ============ */
.guide-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.guide-col-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
  color: #1a1a1a;
  display: flex;
  align-items: center;
  gap: 12px;
}

.guide-col-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563eb;
}

.guide-steps {
  list-style: none;
}

.gstep {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.gstep-num {
  min-width: 32px;
  height: 32px;
  background: #2563eb;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.gstep-body {
  flex: 1;
}

.gstep-title {
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 4px;
}

.gstep-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .guide-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ System Requirements ============ */
.req-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}

.req-card {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
}

.req-icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #2563eb;
  font-size: 24px;
}

.req-title {
  font-size: 14px;
  font-weight: 600;
  color: #999;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.req-val {
  font-size: 16px;
  font-weight: 600;
  color: #1a1a1a;
}

/* ============ Version Timeline ============ */
.ver-list {
  list-style: none;
  max-width: 600px;
  margin: 0 auto;
}

.ver-item {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  position: relative;
}

.ver-item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 40px;
  width: 2px;
  height: calc(100% + 32px);
  background: #e5e5e5;
}

.ver-dot-col {
  position: relative;
  z-index: 1;
}

.ver-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563eb;
  margin-top: 4px;
}

.ver-body {
  flex: 1;
  padding-top: 2px;
}

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

.ver-num {
  font-weight: 600;
  color: #1a1a1a;
}

.ver-tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.ver-date {
  font-size: 13px;
  color: #999;
}

.ver-desc {
  font-size: 14px;
  color: #666;
  line-height: 1.5;
}

/* ============ Security Banner ============ */
.sec-banner {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 40px;
}

.sec-banner-icon {
  width: 24px;
  height: 24px;
  color: #16a34a;
  flex-shrink: 0;
}

.sec-banner-text {
  flex: 1;
}

.sec-banner-title {
  font-weight: 600;
  color: #16a34a;
  margin-bottom: 4px;
}

.sec-banner-desc {
  font-size: 14px;
  color: #666;
}

/* ============ Article Layout ============ */
.art-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.art-hero-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}

.art-hero-sub {
  font-size: 16px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.kw-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

.kw {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
}

.art-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}

.art-body {
  font-size: 16px;
  line-height: 1.8;
  color: #333;
}

.art-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 20px;
  color: #1a1a1a;
}

.art-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: #1a1a1a;
}

.art-body p {
  margin-bottom: 16px;
}

.art-body ul,
.art-body ol {
  margin: 16px 0 16px 24px;
}

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

.art-body strong {
  color: #1a1a1a;
  font-weight: 600;
}

.inline-cta {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(37, 99, 235, 0.05));
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: 8px;
  padding: 24px;
  margin: 32px 0;
  text-align: center;
}

.inline-cta-title {
  font-size: 18px;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 8px;
}

.inline-cta-desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 16px;
}

.inline-cta .btn {
  margin: 0 auto;
}

/* ============ Sidebar ============ */
.sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sbox {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.sbox-title {
  font-size: 14px;
  font-weight: 600;
  color: #999;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.sdl-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  color: #1a1a1a;
  font-size: 14px;
  font-weight: 500;
}

.sdl-btn:hover {
  border-color: #2563eb;
  background: #f8fafc;
}

.sdl-btn.primary {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}

.sdl-btn.primary:hover {
  background: #1d4ed8;
}

.sdl-btn-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.sdl-btn-name {
  font-weight: 600;
  display: block;
}

.sdl-btn-ver {
  font-size: 12px;
  color: inherit;
  opacity: 0.7;
}

.stoc {
  list-style: none;
}

.stoc li {
  margin-bottom: 8px;
}

.stoc a {
  color: #2563eb;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

.stoc a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

.sstat {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.sstat-item {
  background: #f8fafc;
  border-radius: 6px;
  padding: 12px;
  text-align: center;
}

.sstat-num {
  font-size: 18px;
  font-weight: 700;
  color: #2563eb;
}

.sstat-lbl {
  font-size: 12px;
  color: #999;
  margin-top: 4px;
}

.side-security {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 6px;
  padding: 12px;
  font-size: 12px;
  color: #16a34a;
  line-height: 1.5;
}

@media (max-width: 1024px) {
  .art-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    top: auto;
  }
}

/* ============ Footer ============ */
.site-footer {
  background: #0f172a;
  color: white;
  padding: 40px 20px;
  text-align: center;
}

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

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-security {
  font-size: 13px;
  opacity: 0.8;
  margin-bottom: 12px;
}

.footer-note {
  font-size: 12px;
  opacity: 0.6;
  line-height: 1.6;
}