:root {
  --bt-primary: var(--colorv, #4073ff);
  --bt-primary-hover: var(--darker1, #184bd7);
  --bt-bg: var(--BodyBackground, #ffffff);
  --bt-bg-soft: #f8f9fa;
  --bt-text: var(--txtcl, #181818);
  --bt-text-soft: var(--txtdesc, rgba(0, 0, 0, 0.65));
  --bt-border: var(--bt-border, #d2d2d7);
  --bt-radius: var(--radius, 12px);
  --bt-container-width: var(--maxwidth, 1200px);
  --bt-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
  --bt-glass-bg: rgba(255, 255, 255, 0.7);
  --bt-glass-border: rgba(255, 255, 255, 0.3);
}

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

body {
  font-family: var(--fonts, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif);
  color: var(--bt-text);
  line-height: 1.5;
  background-color: var(--bt-bg);
}

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

/* Hero Section */
.bt-hero-section {
  padding: 100px 0;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  overflow: hidden;
}

.bt-hero-content {
  display: flex;
  align-items: center;
  gap: 60px;
}

.bt-hero-text {
  flex: 1;
}

.bt-hero-title {
  font-size: 56px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.bt-hero-desc {
  font-size: 20px;
  color: var(--bt-text-soft);
  margin-bottom: 40px;
  max-width: 500px;
}

.pagebanner-button {
  display: flex;
  gap: 16px;
}

.pagebanner-button .fancy-button {
  margin-bottom: 0;
  text-decoration: none;
}

.pagebanner-button .fancy-button span {
  padding: 10px 42px;
  font-size: 16px;
  font-weight: 500;
  border-radius: 6px;
}

/* 立即安装：实色背景（模仿方案定制） */
.pagebanner-button .fancy-button:first-child span {
  background: var(--colorv, #4073ff) !important;
  color: #fff !important;
}

.pagebanner-button .fancy-button:first-child:hover span {
  background: var(--colorv, #4073ff) !important;
  box-shadow: none !important;
  transform: scale(0.96);
}

/* 企业版：白色背景 + 灰色文字 + 细微投影（模仿联系我们） */
.pagebanner-button .fancy-button:last-child span {
  background: #fff !important;
  color: var(--txtcl, #181818) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
}

.pagebanner-button .fancy-button:last-child:hover span {
  background: #fff !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05) !important;
  transform: scale(0.96);
}

/* 去掉所有背景、投影、滤镜等交互干扰 */
.pagebanner-button .fancy-button:hover span,
.pagebanner-button .fancy-button:active span {
  -webkit-filter: none !important;
  filter: none !important;
}

.pagebanner-button .fancy-button:before,
.pagebanner-button .fancy-button:after,
.pagebanner-button .fancy-button:hover:before,
.pagebanner-button .fancy-button:hover:after {
  display: none !important;
  content: none !important;
}

.bt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: var(--bt-radius);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.bt-btn-primary {
  background-color: var(--bt-primary);
  color: #fff;
}

.bt-btn-primary:hover {
  background-color: var(--bt-primary-hover);
  transform: translateY(-2px);
}

.bt-btn-outline {
  border: 1px solid var(--bt-border);
  color: var(--bt-text);
  background: transparent;
}

.bt-btn-outline:hover {
  background: rgba(0,0,0,0.05);
  transform: translateY(-2px);
}

/* Glass Panel Visual */
.bt-hero-visual {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  perspective: 1000px;
}

.news {
  background: var(--bt-bg-soft);
  padding: 15px 0;
  border-bottom: 1px solid var(--bt-border);
  text-align: center;
  font-size: 14px;
}

.news a {
  color: var(--bt-text);
  margin: 0 15px;
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.news a:hover {
  opacity: 1;
  color: var(--bt-primary);
}

.news .ip {
  color: var(--bt-primary);
  font-weight: 600;
}

.bt-panel-glass {
  background: var(--bt-glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--bt-glass-border);
  border-radius: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transform: rotateY(-10deg) rotateX(5deg);
  transition: transform 0.5s ease;
}

.bt-panel-glass:hover {
  transform: rotateY(0) rotateX(0);
}

.bt-panel-header {
  padding: 12px 20px;
  background: rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.panel-title {
  margin-left: auto;
  font-size: 12px;
  color: var(--bt-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.bt-panel-body {
  padding: 30px;
}

.status-row {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.status-item {
  flex: 1;
}

.status-item label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--bt-text-soft);
}

.progress-bar {
  height: 8px;
  background: rgba(0,0,0,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  background: var(--bt-primary);
  border-radius: 4px;
}

.terminal-mock {
  background: #1d1d1f;
  border-radius: 8px;
  padding: 20px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  color: #a1a1a6;
}

.terminal-mock p {
  margin-bottom: 8px;
}

/* Section Common */
.bt-section-header {
  text-align: center;
  margin-bottom: 60px;
}

.bt-section-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
}

.bt-section-subtitle {
  font-size: 18px;
  color: var(--bt-text-soft);
}

/* Features Section */
.bt-features {
  padding: 100px 0;
}

.bt-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.bt-feature-card {
  padding: 40px;
  border-radius: 24px;
  background: var(--bt-bg-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.bt-feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--bt-shadow);
}

.bt-feature-card h3 {
  font-size: 24px;
  margin: 20px 0 12px;
}

.bt-feature-card p {
  color: var(--bt-text-soft);
}

/* Versions Section */
.bt-versions {
  padding: 100px 0;
  background: var(--bt-bg-soft);
}

.bt-versions-grid {
  display: flex;
  justify-content: center;
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}

.bt-version-card {
  flex: 1;
  background: var(--bt-bg);
  padding: 40px;
  border-radius: 30px;
  border: 1px solid var(--bt-border);
  text-align: center;
}

.bt-version-card.recommended {
  border: 2px solid var(--bt-primary);
  position: relative;
  transform: scale(1.05);
}

.version-tag {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--bt-text-soft);
}

.version-price {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 30px;
}

.version-price span {
  font-size: 18px;
  color: var(--bt-text-soft);
}

.version-features {
  list-style: none;
  margin-bottom: 40px;
  text-align: left;
}

.version-features li {
  margin-bottom: 12px;
  padding-left: 24px;
  position: relative;
}

.version-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #27c93f;
  font-weight: bold;
}

/* Install Section */
.bt-install {
  padding: 100px 0;
}

.bt-terminal-container {
  max-width: 900px;
  margin: 0 auto;
  background: #1d1d1f;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0,0,0,0.2);
}

.bt-terminal-tabs {
  display: flex;
  background: #2c2c2e;
  padding: 0 10px;
}

.bt-tab-btn {
  padding: 15px 25px;
  background: transparent;
  border: none;
  color: #86868b;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  border-bottom: 2px solid transparent;
}

.bt-tab-btn.active {
  background: var(--bt-primary);
  color: #fff;
  border-radius: 6px;
}

.bt-terminal-content {
  padding: 30px;
}

.bt-tab-pane {
  display: none;
}

.bt-tab-pane.active {
  display: block;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  color: #86868b;
  font-size: 13px;
}

.copyBtn {
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  padding: 4px 12px;
  border-radius: 6px;
  cursor: pointer;
}

.copyBtn:hover {
  background: rgba(255,255,255,0.2);
}

pre {
  background: rgba(0,0,0,0.3);
  padding: 20px;
  border-radius: 10px;
  color: #f5f5f7;
  font-family: monospace;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

.bt-install-notes {
  padding: 30px;
  background: rgba(255,255,255,0.05);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #86868b;
  font-size: 14px;
}

.bt-install-notes ol {
  margin-top: 10px;
  margin-left: 20px;
}

.bt-install-notes span {
  color: var(--bt-primary);
}

/* Nav styles */
.products-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bt-border);
  width: 100%;
}

.products-nav .nav {
  display: flex;
  justify-content: center;
  max-width: var(--bt-container-width);
  margin: 0 auto;
}

.products-nav .nav a {
  padding: 20px 30px;
  text-decoration: none;
  color: var(--bt-text-soft);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s ease;
}

.products-nav .nav a.active {
  color: var(--bt-primary);
}

/* Responsive */
@media (max-width: 1024px) {
  .bt-hero-content {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }
  .bt-hero-desc {
    margin: 0 auto 40px;
  }
  .pagebanner-button {
    justify-content: center;
  }
  .bt-hero-visual {
    width: 100%;
    max-width: 600px;
  }
  .bt-versions-grid {
    flex-direction: column;
    align-items: center;
  }
  .bt-version-card.recommended {
    transform: scale(1);
    order: -1;
  }
}

@media (max-width: 768px) {
  .bt-hero-title {
    font-size: 40px;
  }
  .bt-section-title {
    font-size: 32px;
  }
  .products-nav .nav a {
    padding: 15px 15px;
    font-size: 13px;
  }
  .sectionpc { display: none !important; }
  .sectionwap { display: block !important; }
}

.sectionpc { display: block; }
.sectionwap { display: none; }