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16px}.prov-flow-text{font-size:13px}.prov-ai-block{padding:18px}.prov-ai-content{font-size:14.5px}.prov-source{gap:12px;padding:12px 14px}.prov-source-icon{width:34px;height:34px;font-size:16px}.prov-source-label{font-size:13px}}.gallery{grid-template-columns:repeat(3,1fr);gap:28px;display:grid}.gallery-item{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:14px;transition:transform .3s cubic-bezier(.4,0,.2,1),box-shadow .3s cubic-bezier(.4,0,.2,1),border-color .3s;overflow:hidden}.gallery-item:hover{border-color:var(--accent-border);transform:translateY(-6px);box-shadow:0 20px 48px #1e2a3b1f}.gallery-img-wrap{aspect-ratio:16/10;background:var(--bg-alt);position:relative;overflow:hidden}.gallery-img-wrap img{object-fit:cover;width:100%;height:100%;transition:transform .5s cubic-bezier(.4,0,.2,1)}.gallery-item:hover .gallery-img-wrap img{transform:scale(1.06)}.gallery-overlay{opacity:0;background:linear-gradient(#0000 40%,#1e2a3bb3 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lightbox-fade-1bfb91fe{0%{opacity:0}to{opacity:1}}.lightbox-content{flex-direction:column;align-items:center;gap:16px;max-width:1100px;max-height:90vh;display:flex}.lightbox-content img{object-fit:contain;border-radius:12px;max-width:100%;max-height:72vh;box-shadow:0 24px 80px #00000080}.lightbox-caption{text-align:center;color:#fff;max-width:700px}.lightbox-cat{letter-spacing:.5px;text-transform:uppercase;color:var(--accent-light);background:#c68a5333;border-radius:999px;margin-bottom:8px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-block}.lightbox-caption h3{color:#fff;margin-bottom:6px;font-size:22px}.lightbox-caption p{color:#ffffffbf;font-size:14px}.lightbox-counter{color:#ffffff80;margin-top:10px;font-family:SF Mono,Monaco,Consolas,monospace;font-size:12px;display:inline-block}.lightbox-close,.lightbox-btn{color:#fff;cursor:pointer;background:#1a1a1acc;border:1px solid #fff3;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-size:26px;font-weight:300;transition:all .2s;display:flex;position:absolute}.lightbox-close:hover,.lightbox-btn:hover{background:#0d0d0d;border-color:#fff}.lightbox-close{font-size:18px;top:24px;right:24px}.lightbox-btn{top:50%;transform:translateY(-50%)}.lightbox-prev{left:24px}.lightbox-next{right:24px}@media (width<=900px){.gallery{grid-template-columns:repeat(2,1fr);gap:20px}.lightbox{padding:20px}.lightbox-content img{max-height:60vh}.fusion-diagram{grid-template-columns:1fr;gap:32px}.fusion-arrows{flex-direction:row;min-width:auto;padding:0}.fusion-arrows:nth-child(2){order:3}.fusion-arrows:nth-child(4){order:5}.arrow-line{width:80px;height:2px}.arrow-head{margin-top:0;margin-left:-8px}.arrow-label{margin-top:0;margin-left:8px}.fusion-label{text-align:left}.source-grid{grid-template-columns:repeat(4,1fr)}.engine-ring{width:200px;height:200px}.engine-core-inner{width:120px;height:120px}.engine-logo{font-size:26px}.orbit-node{padding:4px 10px;font-size:11px}.orbit-node.n1{top:-12px}.orbit-node.n2{right:-18px}.orbit-node.n3{bottom:-12px}.orbit-node.n4{left:-18px}}@media (width<=600px){.gallery{grid-template-columns:1fr;gap:18px}.gallery-meta{padding:14px 16px 18px}.carousel-btn{width:34px;height:34px;font-size:20px}.carousel-caption{padding:14px 16px 12px}.carousel-caption-title{font-size:15px}.carousel-caption-desc{font-size:12px}.carousel-dots{bottom:10px;right:10px}.lightbox-close{top:12px;right:12px}.lightbox-btn{width:38px;height:38px}.lightbox-prev{left:8px}.lightbox-next{right:8px}.lightbox-caption h3{font-size:18px}.fusion-section{padding-bottom:48px}.source-grid{grid-template-columns:repeat(3,1fr)}.source-chip{padding:8px 6px}.source-code{font-size:13px}.source-name{font-size:10px}.engine-ring{width:160px;height:160px}.engine-core-inner{width:90px;height:90px}.engine-logo{font-size:20px}.engine-title{font-size:12px}.engine-sub{font-size:10px}.orbit-node{padding:3px 8px;font-size:10px}.orbit-node.n1{top:-10px}.orbit-node.n2{right:-14px}.orbit-node.n3{bottom:-10px}.orbit-node.n4{left:-14px}.output-card{gap:10px;padding:12px}.output-icon{width:34px;height:34px;font-size:17px}.output-card h4{font-size:14px}.output-card p{font-size:13px}}.timeline{max-width:720px;margin:0 auto;position:relative}.timeline:before{content:"";background:var(--border);width:2px;position:absolute;top:8px;bottom:8px;left:19px}.tl-item{gap:24px;padding-bottom:40px;display:flex;position:relative}.tl-item:last-child{padding-bottom:0}.tl-dot{background:var(--accent);color:#fff;z-index:1;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;font-weight:700;display:flex}.tl-content{padding-top:4px}.tl-year{color:var(--accent);margin-bottom:8px;font-size:13px;font-weight:600;display:inline-block}.tl-content h3{margin-bottom:8px}@media (width<=600px){.timeline{max-width:100%}.tl-item{gap:16px;padding-bottom:28px}.tl-dot{width:34px;height:34px;font-size:14px}.timeline:before{left:16px}.tags{justify-content:center}}.contact-main{grid-template-columns:1fr;max-width:760px;margin:40px auto 0;display:grid}.contact-info{flex-direction:column;gap:24px;display:flex}.contact-box{border:1px solid var(--border);background:#fff;border-radius:16px;align-items:flex-start;gap:20px;padding:24px;display:flex}.contact-icon{flex-shrink:0;font-size:36px}.contact-body{flex:1}.contact-body h3{margin-bottom:6px;font-size:18px}.contact-body p{color:var(--text-muted);margin-bottom:12px;font-size:14px}.contact-value{color:var(--accent);word-break:break-all;font-size:15px;font-weight:600;display:inline-block}.faq-list{flex-direction:column;gap:20px;max-width:760px;margin:0 auto;display:flex}.faq-item{border:1px solid var(--border);background:#fff;border-radius:12px;padding:24px 28px}.faq-item h4{margin-bottom:8px}.cta-inner{text-align:center;max-width:560px;margin:0 auto}.cta-inner .eyebrow{letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:16px;font-size:13px;font-weight:600;display:inline-block}.cta-inner h2{color:var(--text-on-dark);margin-bottom:16px}.cta-actions{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:32px;display:flex}@media (width<=768px){.contact-main{margin-top:32px}.contact-box{gap:16px;padding:20px}.contact-icon{font-size:32px}}@media (width<=600px){.faq-list{gap:14px}.faq-item{padding:18px 20px}.cta-actions{flex-direction:column;gap:12px;margin-top:24px}.cta-actions .btn{width:100%}}.product-card{color:inherit;flex-direction:column;text-decoration:none;display:flex}.product-tags{margin-top:16px;margin-bottom:16px}.product-link{color:var(--accent);border-top:1px solid var(--border);margin-top:auto;padding-top:12px;font-size:14px;font-weight:600;transition:color .2s}.product-card:hover .product-link{color:var(--accent-light)}.cta-inner{text-align:center;max-width:560px;margin:0 auto}.cta-inner h2{color:var(--text-on-dark);margin-bottom:16px}.cta-actions{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:32px;display:flex}@media (width<=600px){.cta-actions{flex-direction:column;gap:12px}.cta-actions .btn{width:100%}}.back-link{color:var(--accent);margin-bottom:32px;font-size:14px;font-weight:600;display:inline-block}.detail-hero{max-width:760px}.detail-subtitle{letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:16px;font-size:13px;font-weight:600;display:inline-block}.detail-hero h1{margin-bottom:20px}.detail-desc{margin-bottom:24px;font-size:18px}.detail-tags{gap:8px}.detail-sections{max-width:760px;margin:0 auto}.detail-section{margin-bottom:40px}.detail-section:last-child{margin-bottom:0}.detail-section h2{margin-bottom:14px}.detail-section p{font-size:16px;line-height:180%}.cta-inner{text-align:center;max-width:560px;margin:0 auto}.cta-inner h2{color:var(--text-on-dark);margin-bottom:16px}.cta-actions{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:32px;display:flex}.not-found{text-align:center;padding:80px 0}.not-found h2{color:var(--accent);margin-bottom:16px;font-size:48px}.not-found p{margin-bottom:24px}@media (width<=600px){.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}}.steps-grid{grid-template-columns:repeat(5,1fr);gap:20px;display:grid}.step-card{border:1px solid var(--border);text-align:center;background:#fff;border-radius:14px;padding:24px 20px;transition:transform .25s,box-shadow .25s}.step-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}.step-num{background:linear-gradient(135deg, var(--accent), var(--accent-light));color:#fff;border-radius:50%;justify-content:center;align-items:center;width:48px;height:48px;margin-bottom:16px;font-size:18px;font-weight:700;display:inline-flex}.step-card h3{margin-bottom:8px;font-size:17px}.step-card p{font-size:13.5px;line-height:160%}.faq-list{flex-direction:column;gap:20px;max-width:760px;margin:0 auto;display:flex}.faq-item{border:1px solid var(--border);background:#fff;border-radius:12px;padding:24px 28px}.faq-item h4{margin-bottom:8px}.cta-inner{text-align:center;max-width:560px;margin:0 auto}.cta-inner h2{color:var(--text-on-dark);margin-bottom:16px}.cta-actions{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:32px;display:flex}@media (width<=1024px){.steps-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=600px){.steps-grid{grid-template-columns:1fr}.faq-item{padding:18px 20px}.cta-actions{flex-direction:column}.cta-actions .btn{width:100%}}.download-hero{text-align:center;max-width:640px;margin:0 auto}.download-hero .eyebrow{letter-spacing:2px;text-transform:uppercase;color:var(--accent);margin-bottom:16px;font-size:13px;font-weight:600;display:inline-block}.download-hero h1{margin-bottom:16px}.download-hero>p{margin-bottom:32px;font-size:17px}.download-actions{flex-wrap:wrap;justify-content:center;gap:16px;margin-bottom:20px;display:flex}.download-note{color:var(--text-soft);max-width:560px;margin:0 auto;font-size:13px;line-height:170%}.req-table-wrap{border:1px solid var(--border);box-shadow:var(--shadow-sm);background:#fff;border-radius:14px;overflow-x:auto}.req-table{border-collapse:collapse;width:100%;min-width:560px}.req-table thead th{text-align:left;background:var(--bg-alt);border-bottom:1px solid var(--border);color:var(--text-mute);letter-spacing:.3px;padding:18px 20px;font-size:14px;font-weight:600}.req-table tbody td{border-bottom:1px solid var(--border);color:var(--text);padding:18px 20px;font-size:14.5px}.req-table tbody tr:last-child td{border-bottom:none}.req-os{color:var(--accent);font-weight:700}.version-list{flex-direction:column;gap:16px;max-width:720px;margin:0 auto;display:flex}.version-item{border:1px solid var(--border);border-left:3px solid var(--accent);background:#fff;border-radius:12px;padding:20px 24px}.version-head{align-items:center;gap:14px;margin-bottom:8px;display:flex}.version-ver{color:var(--accent);font-size:16px;font-weight:700}.version-date{color:var(--text-soft);font-size:13px;font-family:var(--mono)}.version-notes{font-size:14.5px;line-height:170%}.faq-list{flex-direction:column;gap:20px;max-width:760px;margin:0 auto;display:flex}.faq-item{border:1px solid var(--border);background:#fff;border-radius:12px;padding:24px 28px}.faq-item h4{margin-bottom:8px}@media (width<=600px){.download-actions{flex-direction:column}.download-actions .btn{width:100%}.faq-item{padding:18px 20px}}.back-link{color:var(--accent);margin-bottom:32px;font-size:14px;font-weight:600;display:inline-block}.post{max-width:760px;margin:0 auto}.post-meta{color:var(--text-soft);align-items:center;gap:10px;margin-bottom:16px;font-size:13px;display:flex}.post-dot{opacity:.5}.post-header h1{margin-bottom:16px}.post-desc{margin-bottom:20px;font-size:18px}.post-tags{gap:8px}.post-body{margin-top:40px}.post-section{margin-bottom:36px}.post-section:last-child{margin-bottom:0}.post-section h2{margin-bottom:14px}.post-section p{font-size:16px;line-height:185%}.post-footer{border-top:1px solid var(--border);margin-top:48px;padding-top:24px}.post-author{color:var(--text);font-size:14px;font-weight:600}.post-list{flex-direction:column;gap:20px;max-width:820px;margin:0 auto;display:flex}.post-list-item{border:1px solid var(--border);color:inherit;background:#fff;border-radius:14px;justify-content:space-between;align-items:center;gap:24px;padding:28px 32px;text-decoration:none;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex}.post-list-item:hover{box-shadow:var(--shadow);border-color:var(--accent-border);transform:translateY(-3px)}.post-list-meta{color:var(--text-soft);align-items:center;gap:8px;margin-bottom:10px;font-size:13px;display:flex}.post-list-body h3{margin-bottom:8px;font-size:20px}.post-list-body p{margin-bottom:14px;font-size:14.5px;line-height:170%}.post-list-link{color:var(--accent);white-space:nowrap;flex-shrink:0;font-size:14px;font-weight:600}.post-card{color:inherit;flex-direction:column;text-decoration:none;display:flex}.post-card-meta{color:var(--text-soft);align-items:center;gap:8px;margin-bottom:10px;font-size:12px;display:flex}.post-card h3{margin-bottom:8px;font-size:17px}.post-card p{flex:1;margin-bottom:14px;font-size:13.5px}.post-card-link{color:var(--accent);margin-top:auto;font-size:13px;font-weight:600}.not-found{text-align:center;padding:80px 0}.not-found h2{color:var(--accent);margin-bottom:16px;font-size:48px}.not-found p{margin-bottom:24px}@media (width<=700px){.post-list-item{flex-direction:column;align-items:flex-start;padding:22px 24px}.post-list-link{margin-top:8px}}.back-link{color:var(--accent);margin-bottom:32px;font-size:14px;font-weight:600;display:inline-block}.doc{max-width:760px;margin:0 auto}.doc-cat-small{letter-spacing:1px;text-transform:uppercase;color:var(--accent);background:var(--accent-bg);border-radius:20px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-block}.doc-dot{opacity:.5}.doc-pager{grid-template-columns:1fr 1fr;gap:20px;max-width:760px;margin:48px auto 0;display:grid}.doc-pager-item{border:1px solid var(--border);color:inherit;background:#fff;border-radius:12px;flex-direction:column;gap:6px;padding:18px 22px;text-decoration:none;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex}.doc-pager-item:hover{box-shadow:var(--shadow);border-color:var(--accent-border);transform:translateY(-3px)}.doc-pager-placeholder{visibility:hidden}.doc-pager-next{text-align:right}.doc-pager-label{color:var(--text-soft);font-size:12px}.doc-pager-title{color:var(--accent);font-size:15px;font-weight:600}.doc-list{flex-direction:column;gap:20px;max-width:820px;margin:0 auto;display:flex}.doc-list-item{border:1px solid var(--border);color:inherit;background:#fff;border-radius:14px;justify-content:space-between;align-items:center;gap:24px;padding:28px 32px;text-decoration:none;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex}.doc-list-item:hover{box-shadow:var(--shadow);border-color:var(--accent-border);transform:translateY(-3px)}.doc-list-meta{color:var(--text-soft);align-items:center;gap:8px;margin-bottom:10px;font-size:13px;display:flex}.doc-list-body h3{margin-bottom:8px;font-size:20px}.doc-list-body p{margin-bottom:14px;font-size:14.5px;line-height:170%}.doc-list-link{color:var(--accent);white-space:nowrap;flex-shrink:0;font-size:14px;font-weight:600}.not-found{text-align:center;padding:80px 0}.not-found h2{color:var(--accent);margin-bottom:16px;font-size:48px}.not-found p{margin-bottom:24px}@media (width<=700px){.doc-list-item{flex-direction:column;align-items:flex-start;padding:22px 24px}.doc-list-link{margin-top:8px}.doc-pager{grid-template-columns:1fr}.doc-pager-next{text-align:left}}.privacy-doc{max-width:820px;margin:0 auto}.doc{max-width:800px;margin:0 auto}.doc-header h1{margin-bottom:20px}.doc-desc{color:var(--text);margin-bottom:10px;font-size:15px;line-height:190%}.doc-desc strong{margin-bottom:4px;font-size:16px;display:block}.doc-body{margin-top:40px}.doc-step{margin-bottom:44px}.doc-step:last-child{margin-bottom:0}.doc-step h2{align-items:flex-start;gap:14px;margin-bottom:16px;font-size:19px;line-height:1.5;display:flex}.doc-step-num{background:linear-gradient(135deg, var(--accent), var(--accent-light));color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;margin-top:2px;font-size:13px;font-weight:700;display:inline-flex}.doc-step p{margin-bottom:16px;font-size:15px;line-height:190%}.privacy-list{flex-direction:column;gap:16px;margin:0;padding:0 0 0 50px;list-style:none;display:flex}.privacy-list li{padding-left:20px;font-size:15px;line-height:190%;position:relative}.privacy-list li:before{content:"";background:var(--accent);opacity:.7;border-radius:50%;width:7px;height:7px;position:absolute;top:.68em;left:2px}.privacy-list strong{color:var(--text)}.doc-tips{background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:12px;gap:14px;margin-top:48px;padding:20px 24px;display:flex}.doc-tips-icon{flex-shrink:0;font-size:20px}.doc-tips p{color:var(--text);margin:0;font-size:15px;line-height:180%}@media (width<=700px){.privacy-list{padding-left:0}.doc-step h2{font-size:17px}}

/* ===== 静态站扩展样式 ===== */
/* ==========================================================================
   纯 HTML 静态站扩展样式
   - 可访问性（跳转链接 / 屏幕阅读器文本）
   - 列表页 h1（视觉与原 h2 一致，避免标题层级缺失）
   - 面包屑、页脚链接区、相关阅读
   - 首页 Three.js 地球区块
   - 404 页
   ========================================================================== */

/* ---------- 可访问性 ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 12px 20px;
  background: #1a1a1a;
  color: #fff;
  border-radius: 0 0 12px 0;
  font-size: 14px;
  font-weight: 600;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

.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;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 列表页把原 h2 升级为 h1 时保持原有视觉尺寸 */
h1.h-page {
  font-size: clamp(28px, 3.5vw, 42px);
  line-height: 120%;
  letter-spacing: -0.8px;
}

/* ---------- 标题断行优化（避免尾字孤行） ---------- */
h1,
h2,
h3 {
  text-wrap: balance;
}

/* 首页主标题：整行收进一屏，避免「切」等尾字孤行 */
.hero h1 {
  font-size: clamp(32px, 4.2vw, 58px);
  letter-spacing: -1.2px;
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 30px;
    letter-spacing: -0.5px;
  }
}

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  width: min(1280px, calc(100% - 48px));
  margin: 0 auto;
  padding: 22px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-soft);
}

.breadcrumbs a {
  color: var(--text-mute);
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.breadcrumbs span[aria-current='page'] {
  color: var(--text);
  font-weight: 600;
}

.crumb-sep {
  color: var(--text-soft);
  opacity: 0.6;
}

/* ---------- 页脚链接区 ---------- */
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 48px);
  padding: 40px 0 8px;
  border-top: 1px solid var(--border-dark);
  margin-top: 8px;
  position: relative;
  z-index: 1;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-col a {
  font-size: 13.5px;
  color: var(--text-on-dark-mute);
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--accent-light);
}

@media (max-width: 900px) {
  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    text-align: left;
  }
}

@media (max-width: 600px) {
  .footer-nav {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* ---------- 相关阅读 ---------- */
.related-section {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}

.related-title {
  font-size: 22px;
  margin-bottom: 22px;
}

.related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.related-list li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  transition: transform 0.22s, box-shadow 0.22s, border-color 0.22s;
}

.related-list li:hover {
  transform: translateY(-3px);
  border-color: var(--accent-border);
  box-shadow: var(--shadow);
}

.related-list a {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.related-list a:hover {
  color: var(--accent);
}

.related-list p {
  font-size: 13.5px;
  color: var(--text-mute);
}

@media (max-width: 700px) {
  .related-list {
    grid-template-columns: 1fr;
  }
}

/* 博客文章：紧凑版相关链接（避免与内置「继续阅读」卡片重复） */
.related-compact {
  border-top: 1px solid var(--border);
}

.related-sub {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: 16px;
}

.related-pills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-pills a {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all 0.2s;
}

.related-pills a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-bg);
  transform: translateY(-1px);
}

/* ==========================================================================
   首页 3D 地球区块
   ========================================================================== */
.globe-section {
  padding: clamp(56px, 7vw, 96px) 0;
}

.globe-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.globe-copy .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.globe-copy h2 {
  color: var(--text-on-dark);
  margin-bottom: 18px;
  font-size: clamp(26px, 2.8vw, 36px);
  line-height: 125%;
  text-wrap: balance;
}

.globe-copy > p {
  font-size: 16px;
  line-height: 185%;
  color: var(--text-on-dark-mute);
  max-width: 560px;
}

.globe-points {
  list-style: none;
  margin: 28px 0 32px;
  padding: 0;
  display: grid;
  gap: 16px;
  max-width: 560px;
}

.globe-points li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 168%;
  color: var(--text-on-dark-mute);
}

.globe-points .gi {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-size: 16px;
  background: rgba(198, 138, 83, 0.14);
  border: 1px solid rgba(198, 138, 83, 0.3);
}

.globe-points strong {
  color: var(--text-on-dark);
  font-weight: 600;
}

.globe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.globe-stage {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin-left: auto;
  aspect-ratio: 1 / 1;
}

.globe-canvas {
  position: absolute;
  inset: 0;
  /* three.js 加载前 / WebGL 不可用时的静态占位（真实渲染画面） */
  background-image: url('../img/globe-poster.webp');
  background-size: cover;
  background-position: center 42%;
  background-repeat: no-repeat;
  -webkit-mask-image: radial-gradient(circle at 50% 48%, #000 52%, transparent 78%);
  mask-image: radial-gradient(circle at 50% 48%, #000 52%, transparent 78%);
}

/* canvas 就绪后移除占位图与蒙版 */
.globe-canvas.is-ready {
  background-image: none;
  -webkit-mask-image: none;
  mask-image: none;
}

.globe-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* WebGL 不可用 / 贴图被拦截时的降级：隐藏画布，露出静态海报（形状与配色一致，不出现灰球） */
.globe-canvas.is-fallback {
  border-radius: 50%;
}

/* three.js 会写入内联 style="display:block"，这里必须 !important 才能隐藏 */
.globe-canvas.is-fallback canvas {
  display: none !important;
}

.globe-fallback-text {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 6%;
  text-align: center;
  font-size: 12px;
  color: var(--text-on-dark-mute);
}

.globe-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.5px;
  color: var(--text-soft);
}

.globe-hint {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
}

.globe-hint span {
  font-size: 11.5px;
  letter-spacing: 0.5px;
  color: var(--text-on-dark-mute);
  border: 1px solid var(--border-dark);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 4px 10px;
}

@media (max-width: 900px) {
  .globe-inner {
    grid-template-columns: 1fr;
  }
  .globe-stage {
    margin: 0 auto;
    max-width: 420px;
    order: -1;
  }
  .globe-copy h2 {
    font-size: 26px;
  }
  .globe-points {
    margin: 22px 0 26px;
  }
}

/* ---------- 灯箱（静态站版本补充） ---------- */
.lightbox[hidden] {
  display: none;
}

.lightbox-caption {
  margin-top: 14px;
  text-align: center;
  font-size: 13.5px;
  color: var(--text-on-dark-mute);
}

/* ---------- 404 ---------- */
.error-section {
  padding: clamp(64px, 10vw, 128px) 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(198, 138, 83, 0.09), transparent 58%),
    var(--bg);
}

.error-inner {
  max-width: 720px;
  text-align: center;
}

.error-code {
  font-size: clamp(80px, 14vw, 148px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -6px;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, #1e2a3b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.error-desc {
  font-size: 16px;
  margin: 16px auto 32px;
  max-width: 520px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 44px;
}

.error-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: center;
  padding: 0;
  margin: 0;
  font-size: 14px;
}

.error-links a {
  color: var(--text-mute);
  border-bottom: 1px dashed var(--border);
  padding-bottom: 2px;
}

.error-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- 首屏段落：窄屏下补回左右留白 ---------- */
@media (max-width: 900px) {
  .hero-desc {
    width: auto;
    padding-inline: 16px;
    text-align: left;
  }
}

/* ---------- 动效克制 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}


/* ===== 深色科技主题 ===== */
/* ==========================================================================
   DeepMetier · 双主题视觉层（白天 / 黑夜）
   --------------------------------------------------------------------------
   叠加在 site.css（原始浅色样式）之后，提供：

   1. 两套调色板（同一套品牌语言）
      · 白天：冷白玻璃 + 琥珀金 + 深蓝灰文字，干净的科技感
      · 黑夜：深空黑 + 琥珀金 + 冷光青，影院级科技感
   2. 组件统一走 CSS 变量（--glass / --hairline / --surface-shadow …），
      因此同一份组件样式在两种主题下都成立
   3. 氛围层：固定网格 + 噪点 + 辉光（白天减弱、黑夜加强）
   4. 新组件：技术跑马灯、数据带、主题切换按钮
   5. 深色段落（.section-dark / 页脚 / 3D 地球 / 灯箱）在白天也保持深色，
      形成高对比的「暗色带」节奏
   6. 打印样式回退白底黑字；尊重 prefers-reduced-motion
   ========================================================================== */

/* ========================================================== 1. 白天调色板 */
:root {
  --bg: #f6f8fb;
  --bg-alt: #eef2f7;
  --bg-soft: #ffffff;
  /* 深色段落（两种主题下都保持深色） */
  --bg-dark: #0b1220;
  --bg-dark-alt: #131c2b;

  --accent: #b9762a;
  --accent-light: #d99a4e;
  --accent-lightest: #f3ddbd;
  --accent-strong: #8c561c;
  --accent-bg: rgba(185, 118, 42, 0.09);
  --accent-bg-strong: rgba(185, 118, 42, 0.16);
  --accent-border: rgba(185, 118, 42, 0.3);

  --cool: #0d8fa8;
  --cool-bg: rgba(13, 143, 168, 0.08);
  --cool-border: rgba(13, 143, 168, 0.24);

  --text: #101827;
  --text-mute: #4c5768;
  --text-soft: #79859a;
  --text-on-dark: #f5f9ff;
  --text-on-dark-mute: #a3b3c7;

  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.18);
  --border-dark: rgba(255, 255, 255, 0.08);
  --code-bg: #eef2f8;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 22px 56px rgba(15, 23, 42, 0.12);
  --shadow-xl: 0 32px 80px rgba(15, 23, 42, 0.16);

  /* 玻璃表面 / 内高光 / 投影：两种主题仅这组值不同 */
  --glass: linear-gradient(180deg, #ffffff 0%, #f8fafd 100%);
  --glass-hover: linear-gradient(180deg, #ffffff 0%, #ffffff 100%);
  --hairline: inset 0 1px 0 #ffffff;
  --surface-shadow: var(--hairline), 0 16px 38px rgba(15, 23, 42, 0.09);
  --surface-shadow-hover: var(--hairline), 0 26px 58px rgba(15, 23, 42, 0.16);

  --hover-bg: rgba(15, 23, 42, 0.045);
  --grid-line: rgba(15, 23, 42, 0.07);
  --grid-noise: 0.026;
  --ambient-1: rgba(185, 118, 42, 0.12);
  --ambient-2: rgba(13, 143, 168, 0.07);
  --accent-glow: 0 0 0 1px rgba(185, 118, 42, 0.16), 0 14px 34px rgba(185, 118, 42, 0.14);

  color-scheme: light;
  font-feature-settings: 'tnum' 1, 'lnum' 1;
}

/* ========================================================== 2. 黑夜调色板 */
html[data-theme='dark'] {
  --bg: #070a10;
  --bg-alt: #0b1018;
  --bg-soft: #0d131d;
  --bg-dark: #04060b;
  --bg-dark-alt: #0d131c;

  --accent: #e0a15a;
  --accent-light: #f3c689;
  --accent-lightest: #ffe3bd;
  --accent-strong: #c9863c;
  --accent-bg: rgba(224, 161, 90, 0.1);
  --accent-bg-strong: rgba(224, 161, 90, 0.18);
  --accent-border: rgba(224, 161, 90, 0.34);

  --cool: #6fe3f5;
  --cool-bg: rgba(111, 227, 245, 0.1);
  --cool-border: rgba(111, 227, 245, 0.26);

  --text: #e9eef6;
  --text-mute: #a4b1c3;
  --text-soft: #6f7e92;
  --text-on-dark: #f4f8fd;
  --text-on-dark-mute: #95a3b6;

  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.18);
  --border-dark: rgba(255, 255, 255, 0.07);
  --code-bg: #0e1521;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
  --shadow-xl: 0 34px 90px rgba(0, 0, 0, 0.65);

  --glass: linear-gradient(180deg, rgba(255, 255, 255, 0.062), rgba(255, 255, 255, 0.024));
  --glass-hover: linear-gradient(180deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.035));
  --hairline: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --surface-shadow: var(--hairline), 0 18px 44px rgba(0, 0, 0, 0.38);
  --surface-shadow-hover: var(--hairline), 0 26px 62px rgba(0, 0, 0, 0.5), 0 0 34px rgba(224, 161, 90, 0.1);

  --hover-bg: rgba(255, 255, 255, 0.05);
  --grid-line: rgba(255, 255, 255, 0.032);
  --grid-noise: 0.035;
  --ambient-1: rgba(224, 161, 90, 0.08);
  --ambient-2: rgba(111, 227, 245, 0.05);
  --accent-glow: 0 0 0 1px rgba(224, 161, 90, 0.3), 0 20px 54px rgba(224, 161, 90, 0.16);

  color-scheme: dark;
}

/* ==================================================== 3. 页面底色与氛围层 */
body {
  background:
    radial-gradient(1100px 620px at 50% -12%, var(--ambient-1), transparent 68%),
    radial-gradient(900px 520px at 100% 2%, var(--ambient-2), transparent 72%),
    var(--bg);
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* 固定网格（顶部径向蒙版淡出） */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(ellipse 120% 60% at 50% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 120% 60% at 50% 0%, #000 0%, transparent 72%);
}

/* 极细噪点，提升质感（避免大面积纯色的「塑料感」） */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--grid-noise);
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* 内容层压在氛围层之上（不要动 nav / mobile-call-bar 的定位与层级） */
main,
.footer {
  position: relative;
  z-index: 1;
}

.nav {
  z-index: 120;
}

/* ================================================ 4. 排版细节与等宽小标签 */
h1,
h2,
h3,
h4 {
  letter-spacing: -0.022em;
}

h1 {
  font-weight: 800;
}

h2 {
  font-weight: 700;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

.section-head .eyebrow,
.globe-copy .eyebrow,
.cta-inner .eyebrow,
.download-hero .eyebrow,
.download-inner .eyebrow,
.detail-subtitle {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head .eyebrow::before,
.section-head .eyebrow::after {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent));
  opacity: 0.9;
}

.section-head .eyebrow::after {
  background: linear-gradient(90deg, var(--accent), transparent);
}

.doc-cat,
.doc-cat-small {
  font-family: var(--mono);
  letter-spacing: 0.16em;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
}

.doc-meta,
.post-meta,
.doc-list-meta,
.post-list-meta,
.post-card-meta,
.version-date {
  font-family: var(--mono);
  letter-spacing: 0.04em;
  color: var(--text-soft);
}

.hero-badge {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-border);
  box-shadow: 0 10px 30px rgba(185, 118, 42, 0.1);
}

.hero-accent {
  background: linear-gradient(112deg, var(--accent-strong) 0%, var(--accent) 42%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme='dark'] .hero-accent {
  background: linear-gradient(112deg, #fff3e2 0%, #f7cf9b 38%, #e6ad6b 70%, #d89751 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 标题：白天带一点冷色层次，黑夜走白→暖白 */
.section-head h2,
.detail-hero h1,
.download-hero h1 {
  background: linear-gradient(180deg, var(--text) 0%, #5b6a80 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme='dark'] .section-head h2,
html[data-theme='dark'] .detail-hero h1,
html[data-theme='dark'] .download-hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #d3dce8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-dark .section-head h2 {
  background: linear-gradient(180deg, #ffffff 0%, #e9d9c4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============================================================ 5. 按钮体系 */
.btn {
  border-radius: 11px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, #f7cd93 0%, #e0a15a 48%, #c9863c 100%);
  color: #1b1206;
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 12px 32px rgba(224, 161, 90, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.btn-primary:hover {
  color: #120c04;
  transform: translateY(-2px);
  box-shadow: 0 18px 44px rgba(224, 161, 90, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn-outline {
  color: var(--text);
  background: var(--hover-bg);
  border: 1px solid var(--border-strong);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  color: var(--text);
  border-color: var(--accent-border);
  background: var(--accent-bg);
  box-shadow: var(--shadow);
}

html[data-theme='dark'] .btn-outline:hover {
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4);
}

.btn-dark-outline {
  color: var(--text-on-dark);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.03);
}

.btn-dark-outline:hover {
  color: #120c04;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  border-color: transparent;
}

.skip-link {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #17100a;
}

.skip-link:focus {
  color: #17100a;
}

/* ============================================== 6. 顶部导航与菜单系统 */
.nav {
  --nav-h: 68px;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.nav-inner {
  height: var(--nav-h);
  gap: 20px;
}

.nav::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(185, 118, 42, 0.6), rgba(13, 143, 168, 0.35), transparent);
  opacity: 0.85;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.1);
}

html[data-theme='dark'] .nav {
  background: #070a10;
  border-bottom-color: rgba(255, 255, 255, 0.07);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03) inset;
}

html[data-theme='dark'] .nav::before {
  background: linear-gradient(90deg, transparent, rgba(224, 161, 90, 0.65), rgba(111, 227, 245, 0.35), transparent);
}

html[data-theme='dark'] .nav.scrolled {
  background: #04060b;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.5);
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav {
    background: rgba(255, 255, 255, 0.82);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    backdrop-filter: blur(22px) saturate(180%);
  }
  .nav.scrolled {
    background: rgba(255, 255, 255, 0.94);
  }
  html[data-theme='dark'] .nav {
    background: rgba(7, 10, 16, 0.74);
  }
  html[data-theme='dark'] .nav.scrolled {
    background: rgba(7, 10, 16, 0.88);
  }
}

.nav-brand .brand-text {
  background: linear-gradient(120deg, var(--text) 0%, #6b6152 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme='dark'] .nav-brand .brand-text {
  background: linear-gradient(120deg, #ffffff 0%, #d8c3a4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- 6.1 一级导航（桌面横向） ---------- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1 1 auto;
  justify-content: center;
}

.nav-item {
  position: relative;
}

/* 用 .nav-links 前缀提高优先级，覆盖基础样式里的 .nav-links a */
.nav-links .nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  padding: 9px 13px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mute);
  background: none;
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s, background 0.18s;
}

.nav-links .nav-link:hover,
.nav-links .nav-item.is-open > .nav-link {
  color: var(--text);
  background: var(--hover-bg);
}

.nav-links .nav-item.is-active > .nav-link,
.nav-links .nav-link[aria-current='page'] {
  color: var(--accent);
}

html[data-theme='dark'] .nav-links .nav-item.is-active > .nav-link,
html[data-theme='dark'] .nav-links .nav-link[aria-current='page'] {
  color: var(--accent-light);
}

.nav-links .nav-label {
  position: relative;
}

/* 当前栏目指示线：只画在文字下方，不压到下拉箭头 */
.nav-links .nav-item.is-active > .nav-link .nav-label::after,
.nav-links .nav-link[aria-current='page'] .nav-label::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cool));
}

.nav-links .nav-caret {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  opacity: 0.65;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-links .nav-item.is-open .nav-caret {
  transform: translateY(1px) rotate(-135deg);
  opacity: 1;
}

/* ---------- 6.2 下拉面板 ---------- */
.nav-links .nav-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translate(-50%, 6px);
  z-index: 130;
  display: grid;
  gap: 2px;
  min-width: 272px;
  padding: 8px;
  border-radius: 16px;
  background: var(--glass);
  border: 1px solid var(--border);
  box-shadow: 0 26px 60px rgba(15, 23, 42, 0.16), var(--hairline);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

html[data-theme='dark'] .nav-links .nav-menu {
  background: rgba(13, 19, 29, 0.95);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6), var(--hairline);
}

.nav-links .nav-menu.is-cols {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-width: 540px;
}

.nav-links .nav-item.is-open > .nav-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav-links .nav-menu-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: 10px;
  transition: background 0.16s;
}

.nav-links .nav-menu-link:hover,
.nav-links .nav-menu-link:focus-visible {
  background: var(--accent-bg);
}

.nav-links .nav-menu-link .nm-title {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.nav-links .nav-menu-link .nm-desc {
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--text-soft);
}

.nav-links .nav-menu-link:hover .nm-title,
.nav-links .nav-menu-link[aria-current='page'] .nm-title {
  color: var(--accent);
}

.nav-links .nav-menu-link.is-root {
  grid-column: 1 / -1;
  background: var(--hover-bg);
  border: 1px solid var(--border);
  margin-bottom: 4px;
}

.nav-links .nav-menu-link.is-root .nm-title {
  font-size: 14px;
}

.nav-links .nav-menu-link.is-root:hover {
  background: var(--accent-bg);
  border-color: var(--accent-border);
}

/* ---------- 6.3 移动端抽屉（≤1024px 使用汉堡菜单） ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 110;
  background: rgba(6, 9, 14, 0.5);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.nav-overlay.is-visible {
  opacity: 1;
}

.nav-drawer-extra {
  display: none;
}

.nav-cta-download {
  white-space: nowrap;
}

@media (max-width: 1024px) {
  .nav {
    --nav-h: 60px;
    /* 关键：backdrop-filter 会让 .nav 成为 fixed 子元素的包含块，
       抽屉（.nav-links）会因此被压缩成头栏高度，这里在移动端关闭毛玻璃 */
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: var(--bg);
  }

  html[data-theme='dark'] .nav {
    background: #070a10;
  }

  .nav-inner {
    gap: 10px;
  }

  .nav-toggle {
    display: flex;
    z-index: 121;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 115;
    display: block;
    flex: none;
    padding: 10px 16px calc(32px + env(safe-area-inset-bottom, 0px));
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    background: var(--bg);
    border-top: 1px solid var(--border);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
  }

  html[data-theme='dark'] .nav-links {
    background: #070a10;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  /* 抽屉内容不要被底部固定拨号条遮住 */
  .nav-links {
    padding-bottom: calc(96px + env(safe-area-inset-bottom, 0px));
  }

  .nav-links:focus {
    outline: none;
  }

  .nav-item {
    border-bottom: 1px solid var(--border);
  }

  .nav-item:last-of-type {
    border-bottom: 0;
  }

  .nav-links .nav-link {
    display: flex;
    width: 100%;
    min-height: 52px;
    padding: 14px 6px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    border-radius: 0;
    justify-content: space-between;
  }

  .nav-links .nav-link:hover,
  .nav-links .nav-item.is-open > .nav-link {
    background: none;
    color: var(--accent);
  }

  .nav-links .nav-item.is-active > .nav-link,
  .nav-links .nav-link[aria-current='page'] {
    color: var(--accent);
  }

  .nav-links .nav-item.is-active > .nav-link .nav-label::after,
  .nav-links .nav-link[aria-current='page'] .nav-label::after {
    left: 0;
    right: auto;
    bottom: -6px;
    width: 20px;
    height: 2px;
  }

  .nav-links .nav-caret {
    width: 9px;
    height: 9px;
    opacity: 0.55;
  }

  /* 手风琴：默认收起，展开时不使用绝对定位 */
  .nav-links .nav-menu,
  .nav-links .nav-menu.is-cols {
    position: static;
    display: grid;
    grid-template-columns: 1fr;
    min-width: 0;
    padding: 0;
    margin: 0 0 6px;
    border: 0;
    border-radius: 0;
    background: none;
    box-shadow: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
  }

  html[data-theme='dark'] .nav-links .nav-menu {
    background: none;
    box-shadow: none;
  }

  /* 注意：桌面端的 .nav-item.is-open > .nav-menu 优先级更高（4 个类），
     这里必须显式重置 transform / opacity，否则手风琴会被 translate(-50%) 推走 */
  .nav-links .nav-item.is-open > .nav-menu {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: 70vh;
    overflow-y: auto;
  }

  .nav-links .nav-menu-link {
    padding: 12px 10px 12px 14px;
    border-left: 2px solid var(--border);
    border-radius: 0 8px 8px 0;
  }

  .nav-links .nav-menu-link .nm-title {
    font-size: 15px;
  }

  .nav-links .nav-menu-link .nm-desc {
    font-size: 12.5px;
  }

  .nav-links .nav-menu-link.is-root {
    border-left: 2px solid var(--accent-border);
    border-radius: 0 8px 8px 0;
    margin-bottom: 2px;
  }

  .nav-drawer-extra {
    display: grid;
    gap: 14px;
    margin-top: 18px;
  }

  .nav-links .nav-drawer-cta {
    width: 100%;
    min-height: 50px;
    justify-content: center;
    /* 覆盖基础样式里 .nav-links a 的灰色文字 */
    color: #17100a;
    font-size: 15px;
    font-weight: 700;
  }

  .nav-drawer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-drawer-links a {
    flex: 1 1 auto;
    min-height: 44px;
    padding: 12px 14px;
    font-size: 13.5px;
    text-align: center;
    color: var(--text-mute);
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--hover-bg);
  }

  .nav-drawer-links a:hover {
    color: var(--accent);
    border-color: var(--accent-border);
  }

  .nav-drawer-contact {
    display: grid;
    gap: 8px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-family: var(--mono);
    font-size: 12.5px;
  }

  .nav-drawer-contact a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    color: var(--text-mute);
  }

  .nav-drawer-contact a:hover {
    color: var(--accent);
  }
}

/* 平板横屏（1025–1100px）：四列能力卡片过窄，提前收成两列 */
@media (min-width: 901px) and (max-width: 1100px) {
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 抽屉打开时锁定页面滚动 */
html.nav-locked,
html.nav-locked body {
  overflow: hidden;
}

/* ==================================================== 7. 主题切换按钮 */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-mute);
  background: var(--hover-bg);
  border: 1px solid var(--border-strong);
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-bg);
  transform: translateY(-1px);
  box-shadow: var(--accent-glow);
}

.theme-toggle:active {
  transform: translateY(0) scale(0.96);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
}

.theme-toggle .icon-sun {
  display: none;
}

/* 图标表示「点击后会进入哪个主题」：白天显示月亮，黑夜显示太阳 */
html[data-theme='dark'] .theme-toggle .icon-sun {
  display: block;
}

html[data-theme='dark'] .theme-toggle .icon-moon {
  display: none;
}

@media (max-width: 900px) {
  .theme-toggle {
    width: 34px;
    height: 34px;
  }
  .theme-toggle svg {
    width: 16px;
    height: 16px;
  }
}

/* ======================================================== 8. 玻璃表面统一 */
.card,
.compare-card,
.ext-card,
.gallery-item,
.faq-item,
.step-card,
.version-item,
.post-list-item,
.doc-list-item,
.doc-pager-item,
.contact-box,
.compare-table-wrap,
.req-table-wrap,
.related-list li,
.related-pills a,
.highlight-card,
.hero-phone,
.carousel {
  background: var(--glass);
  border: 1px solid var(--border);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--surface-shadow);
}

.card:hover,
.compare-card:hover,
.ext-card:hover,
.gallery-item:hover,
.highlight-card:hover,
.step-card:hover,
.post-list-item:hover,
.doc-list-item:hover,
.doc-pager-item:hover,
.related-list li:hover {
  background: var(--glass-hover);
  border-color: var(--accent-border);
  box-shadow: var(--surface-shadow-hover);
}

/* 卡片顶部高光细线：常驻淡显，悬停点亮 */
.card::before {
  transform: scaleX(1);
  opacity: 0.5;
  background: linear-gradient(90deg, transparent, var(--accent), var(--cool), transparent);
}

.card:hover::before {
  opacity: 1;
  box-shadow: 0 0 18px rgba(185, 118, 42, 0.4);
}

.card-icon {
  background: linear-gradient(135deg, rgba(185, 118, 42, 0.16), rgba(13, 143, 168, 0.07));
  border: 1px solid rgba(185, 118, 42, 0.34);
  color: var(--accent);
  box-shadow: 0 10px 26px rgba(185, 118, 42, 0.1);
}

html[data-theme='dark'] .card-icon {
  background: linear-gradient(135deg, var(--accent-bg-strong), var(--cool-bg));
  border-color: var(--accent-border);
  color: var(--accent-light);
  box-shadow: 0 0 26px rgba(224, 161, 90, 0.14) inset, 0 10px 26px rgba(0, 0, 0, 0.35);
}

/* 联系方式卡片的大 emoji 单独处理，避免被小图标框挤变形 */
.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  font-size: 26px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-bg-strong), var(--cool-bg));
  border: 1px solid var(--accent-border);
  box-shadow: var(--surface-shadow);
}

.contact-value {
  font-family: var(--mono);
  letter-spacing: 0.02em;
  color: var(--accent);
}

.card h3,
.post-list-body h3,
.doc-list-body h3,
.gallery-meta h3 {
  letter-spacing: -0.018em;
}

.tag {
  background: var(--hover-bg);
  border: 1px solid var(--border);
  color: var(--text-mute);
  font-feature-settings: 'tnum' 1;
}

.tag:hover {
  border-color: var(--accent-border);
  color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 20px rgba(185, 118, 42, 0.12);
}

/* ============================================================ 9. 分区处理 */
.hero {
  background:
    radial-gradient(760px 420px at 8% -8%, rgba(185, 118, 42, 0.14), transparent 62%),
    radial-gradient(680px 400px at 92% 4%, rgba(13, 143, 168, 0.08), transparent 64%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 68%);
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 68%);
}

.hero::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-border), transparent);
}

html[data-theme='dark'] .hero {
  background:
    radial-gradient(760px 420px at 8% -8%, rgba(224, 161, 90, 0.17), transparent 62%),
    radial-gradient(680px 400px at 92% 4%, rgba(111, 227, 245, 0.1), transparent 64%),
    linear-gradient(180deg, #0c121c 0%, var(--bg) 100%);
}

.hero-visual::after {
  background: radial-gradient(circle at center, var(--accent-bg) 0%, transparent 68%);
}

.hero-phone {
  border-color: var(--accent-border);
}

.hero-phone:hover {
  border-color: var(--accent);
  box-shadow: var(--surface-shadow-hover);
}

.hero-phone-cta {
  color: #17100a;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
}

.section-alt {
  background:
    radial-gradient(1100px 460px at 50% 0%, var(--accent-bg), transparent 66%),
    var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-dark {
  background:
    radial-gradient(900px 520px at 50% -10%, rgba(224, 161, 90, 0.12), transparent 62%),
    radial-gradient(700px 400px at 88% 6%, rgba(111, 227, 245, 0.07), transparent 66%),
    var(--bg-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-dark .card,
.section-dark .prov-source,
.section-dark .source-chip,
.section-dark .fusion-footer {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border-color: rgba(255, 255, 255, 0.09);
}

/* ================================================== 10. 轮播与截图相框 */
.carousel {
  border-radius: 18px;
  box-shadow: 0 30px 80px rgba(15, 23, 42, 0.16), 0 0 0 1px var(--border);
}

html[data-theme='dark'] .carousel {
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.62), 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.carousel-track,
.carousel-slide img {
  background: var(--bg-alt);
}

html[data-theme='dark'] .carousel-track,
html[data-theme='dark'] .carousel-slide img {
  background: #0a0f17;
}

.carousel-btn {
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.carousel-btn:hover {
  background: rgba(185, 118, 42, 0.92);
  border-color: transparent;
  color: #fff;
}

.carousel-dot {
  background: rgba(255, 255, 255, 0.32);
}

.carousel-dot.active {
  background: var(--accent-light);
  box-shadow: 0 0 14px rgba(185, 118, 42, 0.6);
}

.carousel-caption {
  background: linear-gradient(rgba(4, 6, 11, 0) 0%, rgba(4, 6, 11, 0.94) 100%);
}

.carousel-caption-title {
  letter-spacing: -0.01em;
}

.gallery-item {
  overflow: hidden;
}

.gallery-img-wrap {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

html[data-theme='dark'] .gallery-img-wrap {
  background: #0a0f17;
}

.gallery-img-wrap img {
  filter: saturate(0.97) contrast(1.02);
}

.gallery-overlay {
  background: linear-gradient(rgba(4, 6, 11, 0) 40%, rgba(4, 6, 11, 0.86) 100%);
}

.gallery-zoom {
  background: rgba(185, 118, 42, 0.94);
  color: #fff;
  font-weight: 700;
}

html[data-theme='dark'] .gallery-zoom {
  background: rgba(224, 161, 90, 0.92);
  color: #17100a;
}

/* 正文配图统一描边 */
.tut-lang .doc-figure img,
.tut-lang .doc-gallery-item img,
.post-body img {
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.tut-lang code,
.doc code,
.post-body code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: var(--accent-strong);
}

html[data-theme='dark'] .tut-lang code,
html[data-theme='dark'] .doc code,
html[data-theme='dark'] .post-body code {
  color: var(--accent-lightest);
}

.tut-lang .doc-tips,
.doc-tips {
  background: linear-gradient(100deg, var(--accent-bg-strong), var(--cool-bg));
  border-left: 3px solid var(--accent);
  box-shadow: var(--hairline);
}

.tut-lang .doc-tips p {
  color: var(--text);
}

.doc-desc,
.post-desc,
.detail-desc {
  color: var(--text-mute);
}

/* ============================================================ 11. 数据表格 */
.compare-table-wrap,
.req-table-wrap {
  border-radius: 16px;
}

.compare-table thead th,
.req-table thead th {
  background: var(--hover-bg);
  border-bottom: 1px solid var(--border);
  color: var(--text-mute);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.compare-table tbody td,
.req-table tbody td {
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.compare-table tbody tr:hover {
  background: var(--hover-bg);
}

.compare-table tbody tr:hover .compare-feature {
  color: var(--accent);
}

.compare-cell.cell-highlight {
  background: var(--accent-bg);
  box-shadow: inset 1px 0 0 var(--accent-border), inset -1px 0 0 var(--accent-border);
}

.compare-cell.cell-highlight .cell-text {
  color: var(--text);
  font-weight: 600;
}

html[data-theme='dark'] .compare-cell.cell-highlight .cell-text {
  color: #fff;
}

.compare-col.col-highlight .col-name {
  color: var(--accent);
}

html[data-theme='dark'] .compare-col.col-highlight .col-name {
  color: var(--accent-light);
}

.compare-col .col-sub-tag {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #17100a;
}

.compare-feature {
  color: var(--text-mute);
}

/* ============================================= 12. 列表页 / 分页 / 时间线 */
.post-list-item:hover .post-list-link,
.doc-list-item:hover .doc-list-link {
  color: var(--accent);
}

.post-list-link,
.doc-list-link,
.post-card-link {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

.version-item {
  border-left: 2px solid var(--accent);
}

.version-ver {
  font-family: var(--mono);
  color: var(--accent);
  letter-spacing: 0.04em;
}

.faq-item {
  transition: border-color 0.2s, box-shadow 0.2s;
}

.faq-item:hover {
  border-color: var(--accent-border);
  box-shadow: var(--surface-shadow-hover);
}

.step-num,
.tl-dot,
.doc-step-num,
.tut-lang .doc-step-num {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #17100a;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.18) inset, 0 10px 26px rgba(185, 118, 42, 0.24);
}

.timeline::before {
  background: linear-gradient(180deg, var(--accent-border), var(--cool-border), transparent);
}

.tl-year {
  font-family: var(--mono);
  letter-spacing: 0.14em;
  color: var(--accent);
}

/* 面包屑 */
.breadcrumbs {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-soft);
}

.breadcrumbs a {
  color: var(--text-soft);
}

.breadcrumbs a:hover {
  color: var(--accent);
}

.breadcrumbs span[aria-current='page'] {
  color: var(--accent);
}

/* 相关阅读 */
.related-list li:hover a,
.related-pills a:hover {
  color: var(--accent);
}

.related-pills a {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

.related-sub {
  font-family: var(--mono);
  letter-spacing: 0.24em;
  color: var(--text-soft);
}

.related-section,
.related-compact {
  background: transparent;
  border-top: 1px solid var(--border);
}

/* ============================================================ 13. 页脚 */
.footer {
  background:
    radial-gradient(800px 420px at 50% 0%, rgba(224, 161, 90, 0.1), transparent 62%),
    linear-gradient(180deg, #060a11 0%, #04060b 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer::before {
  background: linear-gradient(90deg, transparent, rgba(224, 161, 90, 0.7), rgba(111, 227, 245, 0.4), transparent);
}

.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent-light);
}

.footer-social-link {
  background: rgba(255, 255, 255, 0.03);
}

.footer-social-link:hover {
  background: rgba(224, 161, 90, 0.12);
  color: var(--accent-light);
}

/* 页脚联系胶囊里的彩色 emoji 在深色下偏廉价，改为纯文字 */
.footer-social-link [aria-hidden='true'] {
  display: none;
}

/* 手机端常驻拨号条：始终浮在内容之上 */
.mobile-call-bar {
  background: rgba(255, 255, 255, 0.96);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-top: 1px solid var(--border);
  box-shadow: 0 -10px 34px rgba(15, 23, 42, 0.12);
}

html[data-theme='dark'] .mobile-call-bar {
  background: rgba(9, 13, 20, 0.94);
  border-top-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 -10px 34px rgba(0, 0, 0, 0.55);
}

.mobile-call-number {
  color: var(--accent);
}

.mobile-call-btn {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: #17100a;
  box-shadow: 0 8px 22px rgba(185, 118, 42, 0.28);
}

/* ================================================ 14. 灯箱 / 404 / 地球区 */
.lightbox {
  background: rgba(4, 6, 11, 0.94);
}

.lightbox-content img {
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.lightbox-close,
.lightbox-btn {
  background: rgba(9, 13, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.lightbox-close:hover,
.lightbox-btn:hover {
  background: rgba(224, 161, 90, 0.9);
  color: #17100a;
  border-color: transparent;
}

.error-code {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 45%, var(--cool) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 12px 40px rgba(185, 118, 42, 0.22));
}

.error-section {
  background:
    radial-gradient(760px 420px at 50% -6%, rgba(185, 118, 42, 0.12), transparent 64%),
    var(--bg);
}

/* 3D 地球区块：两种主题下都是深色（画面本体是夜空） */
.globe-section {
  background:
    radial-gradient(880px 560px at 50% 0%, rgba(224, 161, 90, 0.14), transparent 62%),
    radial-gradient(620px 420px at 88% 20%, rgba(111, 227, 245, 0.08), transparent 64%),
    var(--bg-dark);
}

.globe-points .gi {
  background: linear-gradient(135deg, rgba(224, 161, 90, 0.2), rgba(111, 227, 245, 0.08));
  border: 1px solid rgba(224, 161, 90, 0.3);
  box-shadow: 0 0 22px rgba(224, 161, 90, 0.12) inset;
}

/* 地球区块内部始终是深色背景，说明文字统一用「深色底上的次级色」 */
.globe-caption,
.globe-fallback-text {
  color: var(--text-on-dark-mute);
}

/* ====================================================== 15. 技术跑马灯 */
.tech-marquee {
  position: relative;
  overflow: hidden;
  padding: 15px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(90deg, var(--accent-bg), var(--cool-bg));
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}

.tech-marquee-track {
  display: flex;
  align-items: center;
  gap: 44px;
  width: max-content;
  animation: dm-marquee 46s linear infinite;
}

.tech-marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-mute);
  white-space: nowrap;
}

.tech-marquee-track span::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(185, 118, 42, 0.6);
}

@keyframes dm-marquee {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

/* ======================================================== 16. 数据带 */
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--surface-shadow);
}

.stat-band > div {
  background: var(--glass);
  padding: 24px 26px;
}

.stat-band strong {
  display: block;
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--accent-strong) 0%, var(--accent) 55%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme='dark'] .stat-band strong {
  background: linear-gradient(120deg, #ffffff 0%, var(--accent-light) 60%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-band span {
  display: block;
  margin-top: 8px;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-mute);
}

.stat-band-wrap {
  padding: 8px 0 0;
}

/* hero 只出现在首页，底部收紧，避免数据带与跑马灯之间出现大空白 */
.hero {
  padding-bottom: clamp(28px, 3.5vw, 44px);
}

@media (max-width: 900px) {
  .stat-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .stat-band > div {
    padding: 18px;
  }
}

/* ============================================= 17. 长文排版（教程/博客） */
.doc .doc-header h1,
.post .post-header h1,
.tut-lang .doc-header h1 {
  font-size: clamp(30px, 3.4vw, 44px);
  line-height: 118%;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, var(--text) 0%, #5d6b80 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

html[data-theme='dark'] .doc .doc-header h1,
html[data-theme='dark'] .post .post-header h1,
html[data-theme='dark'] .tut-lang .doc-header h1 {
  background: linear-gradient(180deg, #ffffff 0%, #dbe4ef 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.doc .doc-step h2,
.post .post-section h2,
.tut-lang .doc-step h2,
.doc .doc-gallery-title {
  font-size: clamp(21px, 2.1vw, 27px);
  line-height: 132%;
  letter-spacing: -0.02em;
}

.post .post-desc,
.doc .doc-desc,
.tut-lang .doc-desc {
  font-size: 17px;
  line-height: 180%;
}

/* 「← 返回列表」与正文块左对齐，避免与居中正文错位 */
.back-link {
  display: block;
  width: min(800px, 100%);
  margin: 0 auto 26px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.container:has(> .post) > .back-link {
  width: min(760px, 100%);
}

.back-link:hover {
  color: var(--accent-strong);
}

html[data-theme='dark'] .back-link:hover {
  color: var(--accent-light);
}

/* ================================================================ 18. 其他 */
.lightbox-caption h3 {
  letter-spacing: -0.01em;
}

.error-links a {
  border-bottom: 1px dashed var(--border-strong);
  color: var(--text-mute);
}

.error-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

::selection {
  background: rgba(185, 118, 42, 0.24);
  color: var(--text);
}

html[data-theme='dark'] ::selection {
  background: rgba(224, 161, 90, 0.32);
  color: #fff;
}

/* 滚动条（桌面端） */
@media (min-width: 901px) {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-track {
    background: var(--bg-alt);
  }
  ::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-border), var(--border));
    border-radius: 999px;
    border: 2px solid var(--bg-alt);
  }
  ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent), var(--accent-border));
  }
}

/* 首屏段落：窄屏下补回左右留白 */
@media (max-width: 900px) {
  .hero-desc {
    width: auto;
    padding-inline: 16px;
    text-align: left;
  }
}

/* 首页主标题：整行收进一屏，避免尾字孤行 */
.hero h1 {
  font-size: clamp(32px, 4.2vw, 58px);
  letter-spacing: -1.2px;
}

@media (max-width: 600px) {
  .hero h1 {
    font-size: 30px;
    letter-spacing: -0.5px;
  }
}

/* 小屏性能：关闭卡片毛玻璃与噪点，滚动更顺 */
@media (max-width: 700px) {
  body::after {
    display: none;
  }

  .card,
  .compare-card,
  .ext-card,
  .gallery-item,
  .faq-item,
  .step-card,
  .version-item,
  .post-list-item,
  .doc-list-item,
  .doc-pager-item,
  .contact-box,
  .hero-phone,
  .carousel,
  .highlight-card,
  .stat-band > div {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: var(--bg-soft);
  }
}

/* 渐变文字统一兜底：background 简写会把 background-clip 重置为 border-box，
   这里在所有主题规则之后再声明一次，保证渐变只在文字内显示（不会变成色块） */
.hero-accent,
.nav-brand .brand-text,
.section-head h2,
.detail-hero h1,
.download-hero h1,
.section-dark .section-head h2,
.stat-band strong,
.error-code,
.doc .doc-header h1,
.post .post-header h1,
.tut-lang .doc-header h1 {
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 打印：回到白底黑字，避免整页黑 */
@media print {
  :root {
    color-scheme: light;
  }
  body,
  .section-alt,
  .section-dark,
  .footer,
  .hero {
    background: #fff !important;
    color: #111 !important;
  }
  body::before,
  body::after,
  .tech-marquee,
  .globe-canvas,
  .mobile-call-bar,
  .theme-toggle {
    display: none !important;
  }
  .card,
  .faq-item,
  .post-list-item,
  .doc-list-item,
  .compare-table-wrap,
  .req-table-wrap,
  .stat-band,
  .stat-band > div {
    background: #fff !important;
    border-color: #ddd !important;
    box-shadow: none !important;
  }
  .section-head h2,
  .detail-hero h1,
  .download-hero h1,
  .doc .doc-header h1,
  .post .post-header h1 {
    -webkit-text-fill-color: #111 !important;
    color: #111 !important;
    background: none !important;
  }
}

/* 动效克制 */
@media (prefers-reduced-motion: reduce) {
  .tech-marquee-track {
    animation: none;
  }
  body {
    transition: none;
  }
}

/* ============================================= 19. 博客长文增强排版（SEO / GEO）
   仅使用新增类名，或只作用于「一个 section 内出现多个子元素」的场景，
   不影响既有短文章的排版。 */
.post-body > .post-section > * + * {
  margin-top: 14px;
}

.post-body h3 {
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 145%;
  letter-spacing: -0.01em;
}

.post-body ul,
.post-body ol {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 9px;
  color: var(--text-mute);
  line-height: 172%;
}

.post-body li::marker {
  color: var(--accent);
}

.post-body strong {
  color: var(--text);
  font-weight: 600;
}

/* 结论摘要块：让生成式引擎可以整段摘录 */
.key-takeaways {
  background: linear-gradient(100deg, var(--accent-bg-strong), var(--bg-soft));
  border: 1px solid var(--accent-border);
  border-left: 3px solid var(--accent);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: var(--hairline);
}

.key-takeaways h2,
.key-takeaways h3 {
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 600;
}

.key-takeaways ul {
  margin-top: 12px;
}

.key-takeaways p {
  color: var(--text);
}

.key-takeaways li {
  color: var(--text-mute);
}

/* 目录 */
.post-toc {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
  padding: 18px 22px;
  box-shadow: var(--hairline);
}

.post-toc-title {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-soft);
  margin-bottom: 10px;
}

.post-toc ol {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 7px;
  font-size: 14px;
  line-height: 145%;
}

.post-toc a {
  color: var(--text-mute);
}

.post-toc a:hover {
  color: var(--accent);
}

/* 表格 */
.post-table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--hairline);
}

.post-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.6;
}

.post-table th,
.post-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.post-table thead th {
  background: var(--hover-bg);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.post-table tbody td {
  color: var(--text-mute);
}

.post-table tbody td:first-child {
  color: var(--text);
  font-weight: 600;
}

.post-table tbody tr:last-child th,
.post-table tbody tr:last-child td {
  border-bottom: 0;
}

/* 正文小节锚点偏移 */
.post-body h2[id],
.post-body h3[id] {
  scroll-margin-top: 96px;
}

/* 文章内的配图与图注 */
.post-figure {
  margin: 0;
}

.post-figure figcaption {
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--text-soft);
  line-height: 155%;
}

/* 文中 FAQ：与页头 FAQPage 结构化数据一一对应 */
.post-faq {
  display: grid;
  gap: 12px;
}

.post-faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-soft);
  padding: 14px 18px;
}

.post-faq summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  line-height: 150%;
}

.post-faq summary::marker {
  color: var(--accent);
}

.post-faq details > p {
  margin-top: 10px;
}

.post-faq details[open] {
  box-shadow: var(--shadow-sm);
}

/* 图片来源 / 事实出处说明 */
.post-sources {
  border-top: 1px solid var(--border);
  padding-top: 14px;
  font-size: 13px;
  color: var(--text-soft);
  line-height: 170%;
}

.post-sources strong {
  color: var(--text-mute);
}

/* 文章页面包屑与正文左对齐 */
.container:has(> .post) > .breadcrumbs {
  width: min(760px, 100%);
  margin: 0 auto 14px;
}

/* 术语表 */
.glossary-grid {
  display: grid;
  gap: 16px;
}

.glossary-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-soft);
  padding: 18px 20px;
  box-shadow: var(--hairline);
}

.glossary-item h3 {
  font-size: 17px;
  letter-spacing: -0.01em;
}

.glossary-term-en {
  display: inline-block;
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  font-weight: 400;
}

.glossary-item p {
  margin-top: 8px;
  font-size: 14px;
}

.glossary-alpha {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.glossary-alpha a {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-mute);
}

.glossary-alpha a:hover {
  color: var(--accent);
  border-color: var(--accent-border);
}

@media (max-width: 640px) {
  .post-table {
    min-width: 460px;
  }
  .key-takeaways,
  .post-toc {
    padding: 16px 18px;
  }
}

/* 长文组件之间的呼吸感（仅作用于新增组件，不影响既有短文章） */
.post-body > .key-takeaways {
  margin-bottom: 24px;
}

.post-body > .post-toc {
  margin-bottom: 34px;
}

.post-body > .post-sources {
  margin-top: 34px;
}

.post-body > .glossary-grid + .glossary-grid {
  margin-top: 16px;
}