/* ===== 宝塔面板定制版 (M1风格: 白色+主题色+渐变光晕) ===== */

/* ===== 水印大字（同首页新闻模块风格） ===== */
.watermark-text {
  position: absolute;
  bottom: -6px;
  left: 0;
  font-size: 52px;
  font-weight: 900;
  letter-spacing: 2px;
  color: rgba(0, 0, 0, 0.035);
  white-space: nowrap;
  pointer-events: none;
  line-height: 1;
  z-index: 0;
}

/* ===== 首屏：左文右图 ===== */
.bt-hero {
  position: relative;
  padding: 130px 0 80px;
  background: #fff;
  overflow: hidden;
}

/* M1 光晕 */
.bt-hero::before {
  content: '';
  position: absolute;
  top: -10%;
  left: -10%;
  width: 50%;
  height: 80%;
  background: radial-gradient(ellipse at center, #b0d0ff 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.6;
  pointer-events: none;
}

.bt-hero::after {
  content: '';
  position: absolute;
  top: 10%;
  right: -5%;
  width: 40%;
  height: 70%;
  background: radial-gradient(ellipse at center, #d8cbfd 0%, transparent 70%);
  filter: blur(80px);
  opacity: 0.5;
  pointer-events: none;
}

.bt-hero .section-content {
  position: relative;
  z-index: 2;
}

.hero-layout {
  display: flex;
  align-items: center;
  gap: 90px;
}

.hero-text {
  flex: 1;
}

.bt-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(45, 119, 255, 0.06);
  border: 1px solid rgba(45, 119, 255, 0.15);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 22px;
}

.hero-title {
  position: relative;
  margin-bottom: 26px;
}

.hero-title h1 {
  position: relative;
  font-size: 38px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  z-index: 1;
}

.hero-title h1 span {
  color: var(--primary);
}

.hero-title .watermark-text {
  font-size: 64px;
  bottom: -8px;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 30px;
  max-width: 560px;
}

.bt-hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.bt-hero-btns .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 32px;
  border-radius: 6px;
  background: var(--gradient-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(22, 119, 255, 0.2);
  transition: all 0.3s ease;
}

.bt-hero-btns .btn-primary:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(22, 119, 255, 0.35);
}

.bt-hero-btns .btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 32px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
}

.bt-hero-btns .btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* 右侧图片 + 浮动数据卡 */
.hero-visual {
  position: relative;
  flex-shrink: 0;
  width: 560px;
}

.hero-visual img {
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.hero-float-card {
  position: absolute;
  left: -32px;
  bottom: -24px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px 24px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.hero-float-card .float-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.hero-float-card .float-value span {
  font-size: 15px;
  margin-left: 2px;
}

.hero-float-card .float-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== 通用 Section ===== */
.bt-section {
  padding: 90px 0;
  position: relative;
  background: #fff;
  overflow: hidden;
}

.bt-section.bg-light {
  background: var(--bg-light);
}

.bt-section .section-content {
  position: relative;
  z-index: 2;
}

.bt-title {
  position: relative;
  margin-bottom: 50px;
}

.bt-title h2 {
  position: relative;
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  z-index: 1;
}

/* ===== 产品介绍：左图右文 ===== */
.intro-layout {
  display: flex;
  align-items: center;
  gap: 90px;
}

.intro-visual {
  position: relative;
  flex-shrink: 0;
  width: 520px;
}

.intro-visual img {
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

/* 图片底部悬浮数据条 */
.intro-strip {
  position: absolute;
  left: 24px;
  right: -24px;
  bottom: -32px;
  display: flex;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.strip-item {
  flex: 1;
  text-align: center;
  padding: 18px 10px;
}

.strip-item + .strip-item {
  border-left: 1px solid #f1f5f9;
}

.strip-item b {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
}

.strip-item b i {
  font-style: normal;
  font-size: 13px;
  margin-left: 1px;
}

.strip-item span {
  font-size: 12px;
  color: var(--text-muted);
}

.intro-text {
  flex: 1;
}

.intro-title {
  position: relative;
  margin-bottom: 28px;
}

.intro-title h2 {
  position: relative;
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  z-index: 1;
}

.intro-text > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 16px;
}

.intro-points {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.point-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-primary);
}

.point-item i {
  color: var(--primary);
  font-size: 15px;
}

/* ===== 核心功能 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light) 0%, #ede9fe 100%);
  flex-shrink: 0;
}

.feature-icon i {
  font-size: 20px;
  background: var(--gradient-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 安装脚本 ===== */
.install-box {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.install-tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-color);
  background: #fafbfd;
}

.install-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 26px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.install-tab:hover {
  color: var(--primary);
}

.install-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: #fff;
  font-weight: 600;
}

.install-content {
  padding: 28px;
}

.install-panel {
  display: none;
}

.install-panel.active {
  display: block;
}

/* 代码区：黑底白字 */
.install-code {
  position: relative;
  background: #0f172a;
  border-radius: 10px;
  padding: 22px 26px;
  padding-right: 96px;
  overflow-x: auto;
}

.install-code code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  font-size: 13px;
  color: #e2e8f0;
  background: transparent; /* 覆盖 Bootstrap 的 code 浅粉底色 */
  padding: 0;
  line-height: 1.9;
  white-space: pre-wrap;
  word-break: break-all;
}

.install-code .copy-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  color: #cbd5e1;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 4px;
}

.install-code .copy-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.install-code .copy-btn.copied {
  background: #059669;
  border-color: #059669;
  color: #fff;
}

.install-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.install-note i {
  color: var(--primary);
}

/* 注意事项 */
.install-tips {
  margin-top: 24px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px 28px;
}

.tips-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.tips-head i {
  color: #ea580c;
}

.install-tips ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.install-tips li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.install-tips li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}

.install-tips li b {
  color: var(--text-primary);
}

/* ===== 系统要求：大编号列表 ===== */
.req-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 40px;
}

.req-item {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 22px 24px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.req-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.req-no {
  font-size: 26px;
  font-weight: 900;
  color: rgba(45, 119, 255, 0.18);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
  line-height: 1;
}

.req-info {
  flex: 1;
}

.req-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.req-info p {
  font-size: 13px;
  color: var(--text-muted);
}

.req-item > i {
  font-size: 20px;
  color: var(--primary);
  opacity: 0.7;
  flex-shrink: 0;
}

/* 支持的系统 */
.os-list {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.os-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: #f8fafc;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.3s;
}

.os-item:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.os-item i {
  font-size: 15px;
  color: var(--primary);
}

/* ===== 常见问题 ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 960px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 26px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.faq-question i {
  font-size: 13px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 26px 22px;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
}

.faq-answer code {
  font-family: 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  background: #f1f5f9;
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .hero-visual {
    width: 460px;
  }
  .intro-visual {
    width: 420px;
  }
  .hero-layout,
  .intro-layout {
    gap: 50px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .bt-hero {
    padding: 100px 0 60px;
  }
  .hero-layout {
    flex-direction: column;
    gap: 50px;
  }
  .hero-title h1 {
    font-size: 28px;
  }
  .hero-title .watermark-text {
    font-size: 48px;
  }
  .hero-visual {
    width: 100%;
  }
  .hero-float-card {
    left: 16px;
    bottom: -24px;
  }
  .bt-section {
    padding: 56px 0;
  }
  .intro-layout {
    flex-direction: column;
    gap: 60px;
  }
  .intro-visual {
    width: 100%;
  }
  .intro-strip {
    left: 12px;
    right: 12px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .install-content {
    padding: 20px;
  }
  .install-code {
    padding: 18px 20px;
    padding-right: 20px;
    padding-top: 52px;
  }
  .req-list {
    grid-template-columns: 1fr;
  }
  .watermark-text {
    font-size: 38px;
  }
}