/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  color: #ccc;
  background: #050508;
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}
.bg {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 20%, rgba(0, 212, 255, 0.18), transparent 30%),
    radial-gradient(circle at 80% 30%, rgba(255, 106, 0, 0.12), transparent 28%),
    radial-gradient(circle at 50% 90%, rgba(0, 212, 255, 0.08), transparent 35%),
    #050508;
  opacity: .65;
  pointer-events: none;
}
#canvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  display: block;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}
.header,
.hero,
.features,
.advantages,
.howto,
.antiban,
.update,
.cta,
.article-page,
.article-detail,
.footer,
.scroll-top {
  position: relative;
  z-index: 1;
}
a { color: #00d4ff; text-decoration: none; transition: color .3s; }
a:hover { color: #ff6a00; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ========== Utility ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: #fff;
}
.section-sub {
  text-align: center;
  color: #888;
  font-size: 1rem;
  margin-bottom: 50px;
}
.section-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: -24px 0 28px;
}
.action-btn {
  display: inline-block;
  min-width: 120px;
  padding: 11px 24px;
  border-radius: 4px;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  transition: background .3s, border-color .3s, color .3s;
}
.buy-btn {
  color: #fff;
  background: #ff6a00;
  border: 1px solid #ff6a00;
}
.buy-btn:hover {
  color: #fff;
  background: #00d4ff;
  border-color: #00d4ff;
}
.download-btn {
  color: #00d4ff;
  background: transparent;
  border: 1px solid rgba(0, 212, 255, 0.6);
}
.download-btn:hover {
  color: #fff;
  background: #00d4ff;
  border-color: #00d4ff;
}
.section-divider {
  width: 150px;
  height: 2px;
  background: #00d4ff;
  margin: 12px auto 32px;
}

/* ========== Header / Nav ========== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 30px; height: 30px;
  background: #00d4ff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #0a0a0f;
  font-weight: 900;
}
.nav { display: flex; gap: 28px; }
.nav a {
  color: #999;
  font-size: 0.9rem;
  position: relative;
  padding: 4px 0;
}
.nav a:hover { color: #fff; }

/* Mobile nav toggle */
.nav-toggle { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 22px; height: 2px; background: #fff; }

/* ========== Hero Banner (Left-Right Layout) ========== */
.hero {
  padding-top: 80px;
  padding-bottom: 40px;
  background: rgba(10, 10, 15, 0.72);
  min-height: auto;
}
.hero-inner {
  display: flex;
  gap: 30px;
  align-items: stretch;
}
.hero-carousel {
  flex: 0 1 716px;
  min-width: 0;
  max-width: 716px;
  display: flex;
  flex-direction: column;
}
.carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 716 / 507;
  overflow: hidden;
  border-radius: 8px;
  background: #0d0d14;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.carousel-slides {
  position: relative;
  width: 100%;
  height: 100%;
}
.carousel-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0d0d14;
}
.carousel-slide.active { opacity: 1; }
.carousel-slide img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.carousel-caption {
  width: 100%;
  min-height: 92px;
  margin-top: 12px;
  padding: 16px 18px;
  border-left: 3px solid #00d4ff;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.carousel-caption h2 {
  color: #fff;
  font-size: 1.2rem;
  line-height: 1.3;
  margin-bottom: 6px;
}
.carousel-caption p {
  color: #aaa;
  font-size: 0.86rem;
  line-height: 1.7;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 4;
  width: 54px;
  border: none;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.48);
  color: #fff;
  font-size: 5.4rem;
  font-weight: 300;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .3s, color .3s;
}
.carousel-arrow:hover {
  background: rgba(0, 212, 255, 0.22);
  color: #00d4ff;
}
.carousel-arrow.prev {
  left: 2px;
}
.carousel-arrow.next {
  right: 2px;
}
.carousel-dots {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  gap: 8px;
}
.carousel-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  border: none;
  transition: background .3s;
}
.carousel-dot.active { background: #00d4ff; }

/* ========== Hero Sidebar ========== */
.hero-sidebar {
  width: 340px;
  flex-shrink: 0;
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
}
.sidebar-title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.sidebar-links {
  margin-bottom: 18px;
}
.sidebar-links li {
  margin-bottom: 6px;
}
.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 4px;
  border: 1px solid transparent;
  color: #ccc;
  font-size: 0.88rem;
  line-height: 1.5;
  transition: background .2s, color .2s, border-color .2s;
}
.sidebar-links a:hover {
  background: rgba(0, 212, 255, 0.06);
  border-color: rgba(0, 212, 255, 0.16);
  color: #00d4ff;
}
.link-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 0.72rem;
  font-weight: 600;
  flex-shrink: 0;
}
.link-tag.feature {
  background: rgba(0, 212, 255, 0.15);
  color: #00d4ff;
}
.link-tag.guide {
  background: rgba(255, 106, 0, 0.15);
  color: #ff6a00;
}
.sidebar-more {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.88rem;
  color: #00d4ff;
}
.sidebar-more:hover { color: #ff6a00; }

/* ========== Features Section ========== */
.features {
  padding: 80px 0;
  background: rgba(13, 13, 20, 0.72);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.feature-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 30px 25px;
  transition: border-color .3s;
}
.feature-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}
.feature-icon {
  display: inline-block;
  border-radius: 6px;
  padding: 7px 12px;
  margin-bottom: 14px;
  color: #fff;
}
.feature-icon.blue { background: rgba(0, 212, 255, 0.15); }
.feature-icon.orange { background: rgba(255, 106, 0, 0.15); }
.feature-icon.purple { background: rgba(160, 80, 255, 0.15); }
.feature-icon.green { background: rgba(0, 200, 120, 0.15); }
.feature-icon.red { background: rgba(255, 60, 80, 0.15); }
.feature-icon.gold { background: rgba(255, 200, 0, 0.15); }
.feature-icon h3 {
  font-size: 1.1rem;
  color: #fff;
  font-weight: 600;
  line-height: 1.4;
}
.feature-card p {
  color: #888;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ========== Advantages Section ========== */
.advantages {
  padding: 80px 0;
  background: rgba(10, 10, 15, 0.72);
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.adv-item {
  text-align: center;
  padding: 35px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  transition: border-color .3s;
}
.adv-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
}
.adv-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: #00d4ff;
  margin-bottom: 8px;
}
.adv-item h3 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 8px;
}
.adv-item p {
  color: #888;
  font-size: 0.88rem;
}

/* ========== How to Use ========== */
.howto {
  padding: 80px 0;
  background: rgba(13, 13, 20, 0.72);
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 30px 25px;
  position: relative;
  counter-increment: step;
  transition: border-color .3s;
}
.step-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}
.step-card::before {
  content: counter(step);
  position: absolute;
  top: -12px; left: 22px;
  width: 30px; height: 30px;
  background: #00d4ff;
  border-radius: 50%;
  font-size: 0.9rem;
  font-weight: 700;
  color: #0a0a0f;
  line-height: 30px;
  text-align: center;
}
.step-card h3 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 10px;
  margin-top: 6px;
}
.step-card p {
  color: #888;
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ========== Anti-ban Section ========== */
.antiban {
  padding: 80px 0;
  background: rgba(10, 10, 15, 0.72);
}
.antiban-content {
  max-width: 860px;
  margin: 0 auto;
}
.antiban-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 30px 28px;
  margin-bottom: 20px;
  transition: border-color .3s;
}
.antiban-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}
.antiban-card h3 {
  font-size: 1.1rem;
  color: #ff6a00;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.antiban-card h3 .icon {
  width: 26px; height: 26px;
  background: rgba(255, 106, 0, 0.12);
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.antiban-card p, .antiban-card ul {
  color: #888;
  font-size: 0.9rem;
  line-height: 1.9;
}
.antiban-card ul { padding-left: 20px; }
.antiban-card ul li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 5px;
}
.antiban-card ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: #00d4ff;
}

/* ========== Update Log ========== */
.update {
  padding: 80px 0;
  background: rgba(13, 13, 20, 0.72);
}
.update-box {
  max-width: 750px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 35px 30px;
  text-align: center;
  transition: border-color .3s;
}
.update-box:hover {
  border-color: rgba(0, 212, 255, 0.2);
}
.update-box .icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}
.update-box h3 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 12px;
}
.update-box p {
  color: #888;
  font-size: 0.9rem;
  line-height: 1.9;
}
.update-highlight {
  color: #00d4ff;
  font-weight: 600;
}

/* ========== CTA Section ========== */
.cta {
  padding: 80px 0;
  background: rgba(10, 10, 15, 0.72);
  text-align: center;
}
.cta-box {
  background: rgba(0, 212, 255, 0.04);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 8px;
  padding: 50px 35px;
  max-width: 750px;
  margin: 0 auto;
  transition: border-color .3s, background .3s;
}
.cta-box:hover {
  border-color: rgba(0, 212, 255, 0.2);
  background: rgba(0, 212, 255, 0.06);
}
.cta-box h2 {
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 12px;
}
.cta-box p {
  color: #888;
  font-size: 0.95rem;
  margin-bottom: 25px;
}
.cta-btn {
  display: inline-block;
  padding: 14px 45px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: #ff6a00;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background .3s;
}
.cta-btn:hover {
  background: #00d4ff;
  color: #fff;
}

/* ========== Footer ========== */
.footer {
  padding: 35px 0;
  background: rgba(5, 5, 8, 0.84);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}
.footer p {
  color: #666;
  font-size: 0.82rem;
  line-height: 2;
}
.footer .brand {
  color: #00d4ff;
  font-weight: 600;
}

/* ========== Scroll to top ========== */
.scroll-top {
  position: fixed;
  bottom: 25px;
  right: 25px;
  width: 40px; height: 40px;
  background: #00d4ff;
  border: none;
  border-radius: 4px;
  color: #0a0a0f;
  font-size: 1rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity .3s, transform .3s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.scroll-top.show { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: #ff6a00; color: #fff; }

/* ========== Animations ========== */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Article List Page ========== */
.article-page {
  padding-top: 80px;
  padding-bottom: 60px;
  min-height: 100vh;
  background: rgba(10, 10, 15, 0.72);
}
.article-page-header {
  margin-bottom: 40px;
}
.article-page-header h1 {
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 8px;
}
.article-page-header p {
  color: #888;
  font-size: 0.95rem;
}
.article-section-title {
  font-size: 1.1rem;
  color: #fff;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-list {
  margin-bottom: 40px;
}
.article-list-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  transition: background .2s;
}
.article-list-item:hover {
  background: rgba(0, 212, 255, 0.03);
}
.article-list-text {
  flex: 1;
  min-width: 0;
}
.article-list-item a {
  color: #ccc;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.article-list-item a:hover { color: #00d4ff; }
.article-summary {
  color: #777;
  font-size: 0.86rem;
  line-height: 1.7;
}
.article-list-item .arrow {
  color: #555;
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 4px;
}

/* ========== Article Detail Page ========== */
.article-detail {
  padding-top: 80px;
  padding-bottom: 60px;
  min-height: 100vh;
  background: rgba(10, 10, 15, 0.72);
}
.article-detail-header {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.article-detail-header .breadcrumb {
  font-size: 0.82rem;
  color: #666;
  margin-bottom: 16px;
}
.article-detail-header .breadcrumb a {
  color: #888;
}
.article-detail-header .breadcrumb a:hover { color: #00d4ff; }
.article-detail-header h1 {
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 10px;
}
.article-detail-header .meta {
  font-size: 0.85rem;
  color: #666;
}
.article-detail-body {
  max-width: 800px;
}
.article-detail-body h2 {
  font-size: 1.2rem;
  color: #fff;
  margin: 30px 0 12px;
  padding-left: 12px;
  border-left: 3px solid #00d4ff;
}
.article-detail-body h3 {
  font-size: 1.05rem;
  color: #ddd;
  margin: 24px 0 10px;
}
.article-detail-body p {
  color: #999;
  font-size: 0.93rem;
  line-height: 1.9;
  margin-bottom: 14px;
}
.article-detail-body ul, .article-detail-body ol {
  color: #999;
  font-size: 0.93rem;
  line-height: 2;
  margin-bottom: 14px;
  padding-left: 20px;
}
.article-detail-body ul li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 4px;
}
.article-detail-body ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: #00d4ff;
}
.article-detail-body ol {
  list-style: decimal;
}
.article-detail-body ol li {
  padding-left: 4px;
}
.article-detail-body strong {
  color: #00d4ff;
  font-weight: 600;
}
.article-detail-body .tip-box {
  background: rgba(255, 106, 0, 0.06);
  border: 1px solid rgba(255, 106, 0, 0.15);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 20px 0;
}
.article-detail-body .tip-box .tip-title {
  color: #ff6a00;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.article-detail-body .tip-box p {
  margin-bottom: 4px;
}
.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.article-nav a {
  color: #888;
  font-size: 0.9rem;
}
.article-nav a:hover { color: #00d4ff; }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 60px;
    left: 12px;
    right: 12px;
    z-index: 1001;
    gap: 8px;
    padding: 12px;
    background: rgba(10, 10, 15, 0.98);
    border: 1px solid rgba(0, 212, 255, 0.18);
    border-radius: 8px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
  }
  .nav.open a {
    display: block;
    width: 100%;
    padding: 12px 14px;
    color: #ddd;
    font-size: 0.95rem;
    line-height: 1.4;
    border: 1px solid transparent;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.03);
  }
  .nav.open a:hover {
    color: #00d4ff;
    background: rgba(0, 212, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.2);
  }
  .nav.open a::after {
    display: none;
  }
  .hero-inner {
    flex-direction: column;
  }
  .hero-sidebar {
    width: 100%;
  }
  .carousel-caption {
    min-height: auto;
    padding: 12px 14px;
  }
  .carousel-caption h2 { font-size: 1rem; }
  .carousel-caption p { font-size: 0.78rem; }
  .carousel-arrow { width: 40px; height: 52%; font-size: 2.8rem; }
  .carousel-arrow.prev { left: 8px; }
  .carousel-arrow.next { right: 8px; }
  .adv-grid { grid-template-columns: 1fr; }
  .section-title { font-size: 1.5rem; }
  .section-actions { flex-direction: column; align-items: center; }
  .features-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 35px 20px; }
  .cta-box h2 { font-size: 1.4rem; }
  .article-detail-header h1 { font-size: 1.3rem; }
  .article-nav { flex-direction: column; gap: 12px; }
}