:root{
  /* Endspace 原生变量：保持和 themes/endspace/style.js 一致 */
  --endspace-bg-base:#fafafa;
  --endspace-bg-primary:#ffffff;
  --endspace-bg-secondary:#f4f4f5;
  --endspace-bg-tertiary:#e4e4e7;
  --endspace-text-primary:#18181b;
  --endspace-text-secondary:#52525b;
  --endspace-text-muted:#a1a1aa;
  --endspace-accent-yellow:#FBFB45;
  --endspace-accent-yellow-dim:rgba(251,251,69,0.15);
  --endspace-accent-cyan:#FBFB45;
  --endspace-accent-cyan-dim:rgba(251,251,69,0.1);
  --endspace-border-base:#e4e4e7;
  --endspace-border-active:#FBFB45;
  --endspace-grid-color:rgba(0,0,0,0.03);
  --endspace-shadow-base:0 1px 2px rgba(0,0,0,0.04),0 2px 4px rgba(0,0,0,0.04),0 4px 8px rgba(0,0,0,0.04);
  --endspace-shadow-hover:0 4px 8px rgba(0,0,0,0.08),0 8px 16px rgba(0,0,0,0.06),0 16px 32px rgba(0,0,0,0.04),0 0 0 1px var(--endspace-accent-yellow);

  --bg:var(--endspace-bg-base);
  --bg-base:var(--endspace-bg-base);
  --panel:var(--endspace-bg-primary);
  --panel-2:var(--endspace-bg-secondary);
  --text:var(--endspace-text-primary);
  --muted:var(--endspace-text-secondary);
  --line:var(--endspace-border-base);
  --accent:var(--endspace-accent-yellow);
  --accent-2:var(--endspace-accent-yellow);
  --accent-red:var(--endspace-accent-yellow);
  --accent-soft:var(--endspace-accent-yellow-dim);
  --shadow:var(--endspace-shadow-base);
  --cover-shadow:0 18px 36px rgba(24,24,27,.13);
  --radius:18px;
  color-scheme:light;
}
html[data-theme="dark"]{
  --endspace-bg-base:#09090b;
  --endspace-bg-primary:#18181b;
  --endspace-bg-secondary:#27272a;
  --endspace-bg-tertiary:#3f3f46;
  --endspace-text-primary:#fafafa;
  --endspace-text-secondary:#a1a1aa;
  --endspace-text-muted:#71717a;
  --endspace-accent-yellow:#FBFB45;
  --endspace-accent-yellow-dim:rgba(251,251,69,0.15);
  --endspace-accent-cyan:#FBFB45;
  --endspace-accent-cyan-dim:rgba(251,251,69,0.1);
  --endspace-border-base:#27272a;
  --endspace-border-active:#FBFB45;
  --endspace-grid-color:rgba(255,255,255,0.02);
  --endspace-shadow-base:0 1px 2px rgba(0,0,0,0.2),0 2px 4px rgba(0,0,0,0.15),0 4px 8px rgba(0,0,0,0.1);
  --endspace-shadow-hover:0 4px 8px rgba(0,0,0,0.3),0 8px 16px rgba(0,0,0,0.25),0 16px 32px rgba(0,0,0,0.2),0 0 0 1px var(--endspace-accent-yellow);

  --bg:var(--endspace-bg-base);
  --bg-base:var(--endspace-bg-base);
  --panel:var(--endspace-bg-primary);
  --panel-2:var(--endspace-bg-secondary);
  --text:var(--endspace-text-primary);
  --muted:var(--endspace-text-secondary);
  --line:var(--endspace-border-base);
  --accent:var(--endspace-accent-yellow);
  --accent-2:var(--endspace-accent-yellow);
  --accent-red:var(--endspace-accent-yellow);
  --accent-soft:var(--endspace-accent-yellow-dim);
  --shadow:var(--endspace-shadow-base);
  --cover-shadow:0 28px 52px rgba(0,0,0,.52);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{min-height:100%;background:var(--bg);scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--endspace-bg-base);
  color:var(--text);
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing:.01em;
}
a{color:inherit;text-decoration:none}
.site-nav{
  width:min(1240px, calc(100% - 42px));
  margin:0 auto;
  padding:18px 0 14px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  position:relative;
  z-index:8;
  border-bottom:1px solid var(--line);
}
.site-brand{
  color:var(--text)!important;
  font-size:14px;
  line-height:1;
  font-weight:900;
  letter-spacing:.08em;
  text-transform:uppercase;
  white-space:nowrap;
}
.site-nav .nav-links{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  gap:4px;
}
.site-nav a:not(.site-brand){
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:auto;
  text-align:center;
  padding:9px 12px;
  border:0;
  border-radius:2px;
  color:var(--muted);
  background:transparent;
  font-size:13px;
  font-weight:820;
  letter-spacing:.02em;
  overflow:hidden;
  transition:color .18s ease, transform .18s ease;
}
.site-nav a:not(.site-brand)::before{
  content:"";
  position:absolute;
  inset:6px 4px;
  z-index:-1;
  background:var(--accent);
  transform:translateX(-112%);
  transition:transform .24s cubic-bezier(.19,1,.22,1);
}
.site-nav a:not(.site-brand):hover,
.site-nav a:not(.site-brand).active{color:#18181b;transform:translateY(-1px)}
.site-nav a:not(.site-brand):hover::before,
.site-nav a:not(.site-brand).active::before{transform:translateX(0)}
.home{
  min-height:100vh;
  display:grid;
  grid-template-rows:auto 1fr;
  background:var(--endspace-bg-base);
  overflow:hidden;
}
.home-titlebar{
  position:relative;
  padding:5rem 0;
  border-bottom:2px solid var(--endspace-border-base);
  overflow:hidden;
  background:var(--endspace-bg-base);
}
@media (min-width:768px){.home-titlebar{padding:7rem 0}}
.home-titlebar::before{
  content:"";
  position:absolute;
  inset:0;
  opacity:.10;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 2px, var(--endspace-text-muted) 2px, var(--endspace-text-muted) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, var(--endspace-text-muted) 2px, var(--endspace-text-muted) 4px);
  background-size:100px 100px;
}
.home-watermark{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  opacity:.15;
  pointer-events:none;
  overflow:hidden;
}
.home-watermark-track{
  display:inline-block;
  white-space:nowrap;
  line-height:1;
  animation:bgMarquee 30s linear infinite;
}
.home-watermark-track span{
  font-size:10rem;
  font-weight:950;
  color:var(--endspace-text-primary);
  user-select:none;
  letter-spacing:-.055em;
}
@media (min-width:768px){.home-watermark-track span{font-size:14rem}}
.home-watermark-track b{
  margin:0 5vw;
  color:var(--endspace-text-muted);
  font-weight:900;
}
@keyframes bgMarquee{
  0%{transform:translateX(0)}
  100%{transform:translateX(-50%)}
}
.home-entry-wrap{
  position:relative;
  z-index:2;
  display:grid;
  place-items:center;
  padding:clamp(54px, 10vw, 104px) 18px 110px;
}
.home-panel{
  width:min(330px, 100%);
  display:flex;
  flex-direction:column;
  gap:clamp(42px, 6vw, 64px);
  align-items:stretch;
}
.home-link{
  display:block;
  position:relative;
  isolation:isolate;
  text-align:center;
  padding:14px 30px;
  color:var(--text);
  font-size:clamp(20px, 3.2vw, 28px);
  font-weight:900;
  letter-spacing:-.03em;
  line-height:1;
  border:0;
  border-radius:2px;
  background:transparent;
  box-shadow:none;
  overflow:hidden;
  transition:color .18s ease, transform .18s ease;
}
.home-link::before{
  content:"";
  position:absolute;
  inset:5px 0;
  z-index:-1;
  background:var(--accent);
  transform:translateX(-112%);
  transition:transform .24s cubic-bezier(.19,1,.22,1);
}
.home-link:hover{color:#18181b;transform:translateX(4px)}
.home-link:hover::before{transform:translateX(0)}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.library{
  width:min(1280px, calc(100% - 44px));
  margin:34px auto 110px;
}
.library-title{
  margin:10px 0 44px;
  text-align:center;
  font-size:clamp(30px, 5vw, 64px);
  line-height:1;
  letter-spacing:.02em;
}
.book-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(150px, 1fr));
  column-gap:clamp(34px, 5vw, 68px);
  row-gap:clamp(58px, 8vw, 96px);
  align-items:start;
}
.book{display:block;min-width:0}
.book-cover{
  position:relative;
  width:100%;
  aspect-ratio:2/3;
  border-radius:4px;
  overflow:hidden;
  background:
    linear-gradient(145deg, rgba(255,255,255,.24), transparent 38%),
    color-mix(in srgb, var(--panel) 88%, var(--accent) 12%);
  box-shadow:var(--cover-shadow);
  transform-origin:center bottom;
  transition:transform .18s ease, filter .18s ease, box-shadow .18s ease;
}
.book-cover::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:8px;
  z-index:2;
  background:linear-gradient(90deg, rgba(0,0,0,.24), rgba(255,255,255,.12), transparent);
  mix-blend-mode:multiply;
}
.book-cover img{display:block;width:100%;height:100%;object-fit:cover}
.book:hover .book-cover{
  transform:translateY(-7px);
  filter:saturate(1.04) contrast(1.02);
  box-shadow:0 28px 50px rgba(0,0,0,.30);
}
.book-title{
  margin:16px 0 0;
  color:var(--text);
  font-size:18px;
  line-height:1.22;
  font-weight:820;
  word-break:break-word;
}
.portal-note{
  margin:8px 0 0;
  color:var(--muted);
  font-size:13px;
  line-height:1.35;
  font-weight:760;
  word-break:break-word;
}
html[data-theme="dark"] .portal-note{color:var(--endspace-text-secondary)}
.detail-shell{width:min(980px, calc(100% - 44px));margin:30px auto 100px}
.back-link{display:inline-flex;margin:0 0 28px;color:var(--muted);font-size:14px}
.back-link:hover{color:var(--text)}
.detail-layout{display:grid;grid-template-columns:minmax(210px, 280px) 1fr;gap:clamp(28px, 6vw, 64px);align-items:start}
.detail-cover{position:sticky;top:22px;aspect-ratio:2/3;border-radius:5px;overflow:hidden;box-shadow:var(--cover-shadow);background:var(--panel)}
.detail-cover img{width:100%;height:100%;object-fit:cover;display:block}
.detail-content{min-width:0}
.detail-content h1{margin:0 0 26px;font-size:clamp(32px, 5vw, 58px);line-height:1.04}
.md-body{color:var(--text);font-size:17px;line-height:1.85;padding-bottom:20px}
.md-body p{margin:0 0 1em}
.md-body ul,.md-body ol{padding-left:1.25em;margin:0 0 1.2em}
.md-body li{margin:.3em 0}
.md-body a{color:var(--text);border-bottom:1px solid var(--accent)}
html[data-theme="dark"] .md-body a{color:var(--accent);border-color:color-mix(in srgb, var(--accent) 42%, transparent)}
.md-body blockquote{margin:1.4em 0;padding:1px 0 1px 18px;border-left:3px solid var(--accent);color:var(--muted)}
.md-body code{font-family:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;font-size:.9em;background:var(--accent-soft);padding:.18em .38em;border-radius:6px}
.muted{color:var(--muted)}
.floating-controls{
  position:fixed;
  right:16px;
  bottom:28px;
  z-index:50;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
  pointer-events:none;
}
.control-drawer{
  width:min(250px, calc(100vw - 34px));
  padding:10px;
  border:1px solid var(--line);
  border-radius:18px;
  background:color-mix(in srgb, var(--endspace-bg-primary) 94%, transparent);
  backdrop-filter:blur(16px);
  box-shadow:0 18px 46px rgba(0,0,0,.18);
  pointer-events:auto;
  transform:translateY(8px) scale(.98);
  opacity:0;
  visibility:hidden;
  transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.floating-controls.is-open .control-drawer{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.control-drawer a{
  position:relative;
  display:block;
  padding:12px 14px;
  border-radius:10px;
  color:var(--text);
  font-size:14px;
  font-weight:850;
  overflow:hidden;
  isolation:isolate;
}
.control-drawer a::before{
  content:"";
  position:absolute;
  inset:6px 8px;
  z-index:-1;
  background:var(--accent);
  transform:translateX(-112%);
  transition:transform .24s cubic-bezier(.19,1,.22,1);
}
.control-drawer a:hover::before{transform:translateX(0)}
.control-capsule{
  background:rgba(161,161,170,.80);
  backdrop-filter:blur(12px);
  padding:6px;
  border-radius:999px;
  box-shadow:0 14px 34px rgba(0,0,0,.22);
  display:flex;
  flex-direction:column;
  gap:12px;
  pointer-events:auto;
}
.control-btn{
  width:40px;
  height:40px;
  border:0;
  border-radius:999px;
  background:var(--endspace-bg-primary);
  color:#18181b;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:4px;
  cursor:pointer;
  box-shadow:0 6px 14px rgba(0,0,0,.14);
  transition:transform .16s ease;
}
.control-btn:active{transform:scale(.95)}
.control-btn-inner{
  width:100%;height:100%;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:900;line-height:1;
  background:transparent;
  transition:background .18s ease;
}
.control-btn:hover .control-btn-inner,.floating-controls.is-open [data-menu-toggle] .control-btn-inner{background:var(--accent)}
.old-theme-toggle,.theme-toggle{display:none!important}
@media (max-width: 900px){
  .book-grid{grid-template-columns:repeat(auto-fill, minmax(132px, 1fr));column-gap:28px;row-gap:56px}
  .detail-layout{grid-template-columns:1fr}
  .detail-cover{position:relative;top:auto;width:min(260px, 70vw);margin:0 auto}
  .detail-content h1{text-align:center}
  .control-capsule{flex-direction:row;gap:10px}
  .floating-controls{align-items:flex-end}
}
@media (max-width: 640px){
  .home-panel{width:min(300px, 100%);gap:32px}
  .home-link{font-size:24px;padding:15px 24px}
}
@media (max-width: 560px){
  .site-nav{width:min(100% - 24px, 620px);padding-top:14px;gap:10px;align-items:flex-start}
  .site-brand{font-size:12px;padding-top:10px}
  .site-nav .nav-links{gap:2px}
  .site-nav a:not(.site-brand){padding:8px 6px;font-size:12px}
  .library{width:calc(100% - 28px);margin-top:28px}
  .library-title{margin-bottom:30px}
  .book-grid{grid-template-columns:repeat(2, minmax(0, 1fr));column-gap:22px;row-gap:46px}
  .book-title{font-size:15px;margin-top:12px}
  .portal-note{font-size:12px}
  .detail-shell{width:calc(100% - 28px)}
  .md-body{font-size:16px;line-height:1.75}
  .floating-controls{right:12px;bottom:14px}
}
@media (max-width:350px){.book-grid{column-gap:16px}.home-link{font-size:23px}}