/* ================= 彻底修复：Logo 图标与“图片转换”文字绝对垂直居中 ================= */
.md-header__inner {
  display: flex !important;
  align-items: center !important;
  min-height: 64px !important;
}

/* 1. 图标容器：高度固定 48px，自身完全居中 */
.md-header__button.md-logo {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  height: 48px !important;
  margin: 0 !important;
  padding: 0 !important;
  line-height: 0 !important;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  display: block !important;
  height: 48px !important;
  width: 48px !important;
  object-fit: contain !important;
  border-radius: 10px !important;
  margin: 0 !important;
}

/* 2. 标题容器：高度与图标完全一致（48px），内部元素全部强力垂直居中 */
.md-header__title {
  display: flex !important;
  align-items: center !important;
  height: 48px !important;
  margin-left: 8px !important; /* 与图标保持紧凑微距 */
  padding: 0 !important;
  line-height: 1 !important;
}

.md-header__ellipsis {
  display: flex !important;
  align-items: center !important;
  height: 48px !important;
  overflow: visible !important;
  line-height: 1 !important;
}

/* 3. 关键点：解除原生定位，使其严格跟随 flexbox 居中对齐，杜绝文字下沉 */
.md-header__topic {
  position: static !important;
  display: flex !important;
  align-items: center !important;
  height: 48px !important;
  line-height: 1 !important;
  top: auto !important;
}

.md-header__topic:first-child .md-ellipsis {
  display: inline-flex !important;
  align-items: center !important;
  font-size: 24px !important;
  font-weight: 900 !important;
  line-height: 1 !important;
  letter-spacing: -0.3px !important;
  color: #1e293b !important;
  /* 消除汉字自带的基线偏移 */
  transform: translateY(-1px);
}

[data-md-color-scheme="slate"] .md-header__topic:first-child .md-ellipsis {
  color: #f8fafc !important;
}

/* ==========================================================================
   图片转换 (imgto.de5.net) 专用定制样式库 - V6 (解决吸顶固定 + 完美排版)
   ========================================================================== */

/* 0. 全局平滑滚动，绝不能在 html, body 上加 overflow-x: hidden，否则破坏 sticky */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 68px; /* 避让吸顶导航栏高度 */
}
body {
  margin: 0;
}

/* ================= 核心：永久吸顶固定顶部导航栏 ================= */
.md-header,
.md-header[data-md-state="hidden"],
.md-header[data-md-state="shadow"] {
  position: sticky !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  z-index: 999 !important;
  transform: none !important; /* 阻止任何滚动隐藏动画 */
  background-color: #ffffff !important;
  color: #1e293b !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05) !important;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.md-header__inner {
  display: flex !important;
  align-items: center !important;
}

.md-header__title {
  display: flex !important;
  align-items: center !important;
  color: #1e293b !important;
  font-weight: 700;
  flex: 1 1 auto !important;
}

[data-md-color-scheme="slate"] .md-header {
  background-color: #0f172a !important;
  color: #f8fafc !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
[data-md-color-scheme="slate"] .md-header__title {
  color: #f8fafc !important;
}
.md-search {
  display: none !important;
}

/* 锁定“图片转换”标题 */
.md-header__topic {
  transform: none !important;
  opacity: 1 !important;
  visibility: visible !important;
}
.md-header__topic:nth-child(2),
.md-header__topic[data-md-component="header-topic"],
.md-header__title[data-md-state="active"] .md-header__topic:nth-child(2) {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
}
.md-header__title[data-md-state="active"] .md-header__topic:first-child {
  transform: none !important;
  opacity: 1 !important;
  visibility: visible !important;
}

/* 顶栏导航锚点链接 */
.custom-nav-links {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  margin-left: 24px;
}
.custom-nav-item {
  color: #475569 !important;
  font-size: 14.5px;
  font-weight: 500;
  text-decoration: none !important;
  transition: color 0.2s ease;
  white-space: nowrap;
}
.custom-nav-item:hover {
  color: #2563eb !important;
}
[data-md-color-scheme="slate"] .custom-nav-item {
  color: #94a3b8 !important;
}
[data-md-color-scheme="slate"] .custom-nav-item:hover {
  color: #60a5fa !important;
}

/* 打赏作者胶囊按钮 */
.donate-btn-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, #ff7a45 0%, #ff5722 100%);
  color: #ffffff !important;
  font-size: 13.5px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 9999px;
  text-decoration: none !important;
  box-shadow: 0 2px 8px rgba(255, 87, 34, 0.25);
  margin-right: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}
.donate-btn-header:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255, 87, 34, 0.4);
  opacity: 0.95;
}
.donate-icon {
  font-size: 14px;
  line-height: 1;
}

/* 1. MkDocs 基础排版重置 */
.md-content__inner {
  margin: 0 !important;
  padding: 0 !important;
  max-width: 100% !important;
}

/* 将防横向溢出限制在内容容器上，不干扰顶栏吸顶 */
.landing-wrap {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--md-default-fg-color, #1e293b);
  line-height: 1.6;
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 80px;
  box-sizing: border-box;
  overflow-x: hidden;
  width: 100%;
}

/* 2. 徽章胶囊 */
.badge-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 24px;
}
.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 9999px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(37, 99, 235, 0.08);
  color: #2563eb;
  border: 1px solid rgba(37, 99, 235, 0.2);
}
[data-md-color-scheme="slate"] .badge-item {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(96, 165, 250, 0.3);
}

/* 3. Hero 区域：超粗渐变居中大标题 */
.hero-screen {
  text-align: center;
  padding: 20px 0 50px;
}
.hero-title {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(28px, 5.2vw, 54px);
  font-weight: 900 !important;
  line-height: 1.28;
  letter-spacing: -0.5px;
  text-align: center !important;
  margin: 0 auto 20px !important;
  max-width: 920px;
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 42%, #06b6d4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  -webkit-text-stroke: 0.5px transparent;
  display: block;
}
[data-md-color-scheme="slate"] .hero-title {
  background: linear-gradient(135deg, #60a5fa 0%, #38bdf8 45%, #2dd4bf 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: clamp(14px, 2.2vw, 17px);
  color: var(--md-default-fg-color--light, #64748b);
  max-width: 680px;
  margin: 0 auto 36px;
  text-align: center;
}

/* 4. 双端下载卡片 */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 720px;
  margin: 0 auto 40px;
}
.dl-card {
  background: var(--md-default-bg-color, #ffffff);
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.08));
  border-radius: 16px;
  padding: 24px;
  text-align: left;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.dl-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.1);
  border-color: #2563eb;
}
.dl-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.dl-icon { font-size: 30px; line-height: 1; }
.dl-card-title { font-size: 18px; font-weight: 700; margin: 0; }
.dl-tag-blue { font-size: 12px; color: #2563eb; font-weight: 600; }
.dl-tag-green { font-size: 12px; color: #0d9488; font-weight: 600; }
.dl-card-meta {
  font-size: 13px;
  color: var(--md-default-fg-color--lighter, #94a3b8);
  margin-bottom: 20px;
  line-height: 1.6;
}
.dl-btn {
  display: block;
  text-align: center;
  background: #2563eb;
  color: #ffffff !important;
  font-weight: 600;
  padding: 12px 18px;
  border-radius: 10px;
  text-decoration: none !important;
  transition: background 0.2s ease;
}
.dl-btn:hover { background: #1d4ed8; }
.dl-btn-green { background: #0f766e; }
.dl-btn-green:hover { background: #115e59; }

/* 5. 通用分屏区块 */
.section-block {
  padding: clamp(48px, 8vw, 80px) 0;
  border-bottom: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.06));
}
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 42px;
}
.section-tag {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #2563eb;
  margin-bottom: 8px;
}
.section-title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  font-size: clamp(13.5px, 2vw, 16px);
  color: var(--md-default-fg-color--light, #64748b);
  margin: 0;
}

/* 6. 电脑端与手机端专屏布局 */
.device-showcase-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
}
.device-showcase-grid.reverse {
  grid-template-columns: 1fr 1.4fr;
}
.pc-window-box {
  background: var(--md-default-bg-color, #ffffff);
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.08));
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.08);
  width: 100%;
}
.pc-window-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.06));
}
.w-dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.w-dot-red { background: #ef4444; }
.w-dot-yellow { background: #f59e0b; }
.w-dot-green { background: #10b981; }
.pc-window-img { width: 100%; height: auto; display: block; }

.phone-mockup-wrap {
  display: flex;
  justify-content: center;
  width: 100%;
}
.phone-mockup {
  width: 100%;
  max-width: 320px;
  background: #0f172a;
  padding: 10px;
  border-radius: 36px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.14);
  box-sizing: border-box;
}
.phone-screen {
  border-radius: 26px;
  overflow: hidden;
  background: #ffffff;
}
.phone-img { width: 100%; height: auto; display: block; }

.device-feature-list { display: flex; flex-direction: column; gap: 20px; }
.device-feature-item { display: flex; gap: 16px; align-items: flex-start; }
.device-feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
[data-md-color-scheme="slate"] .device-feature-icon {
  background: rgba(59, 130, 246, 0.15);
}
.device-feature-text h4 { font-size: 17px; font-weight: 700; margin: 0 0 6px; }
.device-feature-text p {
  font-size: 14px;
  color: var(--md-default-fg-color--light, #64748b);
  margin: 0;
  line-height: 1.6;
}

/* 7. Bento 四宫格 */
.card-grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.feature-box {
  background: var(--md-default-bg-color, #ffffff);
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.08));
  border-radius: 14px;
  padding: 26px 22px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.feature-box:hover { border-color: #2563eb; transform: translateY(-2px); }
.feature-icon-badge {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}
.feature-box h4 { font-size: 18px; font-weight: 700; margin: 0 0 10px; }
.feature-box p {
  font-size: 14px;
  color: var(--md-default-fg-color--light, #64748b);
  margin: 0;
  line-height: 1.65;
}

/* 8. FAQ 手风琴 */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--md-default-fg-color--lightest, rgba(0, 0, 0, 0.08));
  border-radius: 12px;
  margin-bottom: 14px;
  background: var(--md-default-bg-color, #ffffff);
  overflow: hidden;
}
.faq-item summary {
  padding: 18px 20px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; font-weight: 400; color: #94a3b8; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer {
  padding: 0 20px 20px;
  font-size: 14px;
  color: var(--md-default-fg-color--light, #64748b);
  line-height: 1.7;
}

/* 9. 纯净时间线与更新记录 */
.changelog-section {
  padding: 70px 0 40px;
}
.changelog-timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 36px;
}
.changelog-timeline::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 0px;
  left: 9px;
  width: 2.5px;
  background: #3b82f6;
}
.timeline-item {
  position: relative;
  margin-bottom: 32px;
}
.timeline-node {
  position: absolute;
  left: -36px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #2563eb;
  border: 2.5px solid #ffffff;
  box-shadow: 0 0 0 2px #2563eb;
}
[data-md-color-scheme="slate"] .timeline-node {
  border-color: #0f172a;
}
.timeline-header {
  margin-bottom: 12px;
}
.timeline-version-title {
  font-size: 19px;
  font-weight: 800;
  color: #2563eb;
  margin: 0 0 4px;
}
[data-md-color-scheme="slate"] .timeline-version-title {
  color: #60a5fa;
}
.timeline-date {
  font-size: 13px;
  color: #94a3b8;
}

.timeline-content-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.timeline-entry {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 6px;
  background: rgba(241, 245, 249, 0.7);
  border: none !important;
  box-shadow: none !important;
  font-size: 14px;
  line-height: 1.6;
  color: var(--md-default-fg-color, #334155);
}
[data-md-color-scheme="slate"] .timeline-entry {
  background: rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}
.entry-icon {
  font-size: 14px;
  flex-shrink: 0;
}

/* 消除 MkDocs 注入在 details 上的外边框与图标 */
.md-typeset details.timeline-details,
.md-typeset details.timeline-details[open],
details.timeline-details,
details.timeline-details[open] {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 0 !important;
  outline: none !important;
  display: flex !important;
  flex-direction: column !important;
}
.md-typeset details.timeline-details > summary,
details.timeline-details > summary {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  list-style: none !important;
  outline: none !important;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  padding: 24px 0 10px !important;
  margin: 0 !important;
  cursor: pointer !important;
  order: 2 !important;
}
.md-typeset details.timeline-details > summary::-webkit-details-marker,
details.timeline-details > summary::-webkit-details-marker {
  display: none !important;
}
.md-typeset details.timeline-details > summary::before,
.md-typeset details.timeline-details > summary::after,
details.timeline-details > summary::before,
details.timeline-details > summary::after {
  display: none !important;
  content: none !important;
}
.timeline-history-items {
  order: 1 !important;
}

.timeline-pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 30px;
  border-radius: 9999px;
  border: 1.5px solid #2563eb !important;
  background: #ffffff !important;
  color: #2563eb !important;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
  transition: all 0.2s ease;
  user-select: none;
}
.timeline-pill-btn:hover {
  background: #2563eb !important;
  color: #ffffff !important;
}
[data-md-color-scheme="slate"] .timeline-pill-btn {
  background: #0f172a !important;
  border-color: #60a5fa !important;
  color: #60a5fa !important;
}
[data-md-color-scheme="slate"] .timeline-pill-btn:hover {
  background: #2563eb !important;
  color: #ffffff !important;
}

.timeline-details .btn-text-close { display: none; }
.timeline-details .btn-text-open { display: inline; }
.timeline-details[open] .btn-text-open { display: none; }
.timeline-details[open] .btn-text-close { display: inline; }

/* 10. 页脚 */
.custom-footer {
  text-align: center;
  padding-top: 50px;
  font-size: 13px;
  color: var(--md-default-fg-color--lighter, #94a3b8);
}
.custom-footer a { color: inherit; margin: 0 8px; }

/* ================= 移动端响应式断点 ================= */
@media (max-width: 992px) {
  .device-showcase-grid,
  .device-showcase-grid.reverse {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 820px) {
  .custom-nav-links {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .landing-wrap {
    padding: 16px 14px 60px;
  }
  .section-block {
    padding: 44px 0;
  }
  .download-grid,
  .card-grid-4 {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .changelog-timeline {
    padding-left: 26px;
  }
  .changelog-timeline::before {
    left: 6px;
  }
  .timeline-node {
    left: -26px;
  }
  .donate-btn-header {
    padding: 5px 12px;
    font-size: 12px;
    margin-right: 6px;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .badge-item {
    font-size: 12px;
    padding: 4px 10px;
  }
  .timeline-entry {
    font-size: 13px;
    padding: 8px 10px;
  }
  .timeline-pill-btn {
    padding: 6px 20px;
    font-size: 13px;
  }
}