@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;700;900&display=swap');

:root{
  --ink:#0d0d0d;
  --panel:#16111f;
  --violet:#8000ff;
  --magenta:#ff00ff;
  --paper:#f1ecff;
  --dim:#a99fc4;
  --line:rgba(128,0,255,.34);
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  padding-bottom:88px;
  background:var(--ink);
  color:var(--paper);
  font-family:"Outfit",system-ui,-apple-system,"Segoe UI","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.72;
  overflow-x:hidden;
  background-image:
    radial-gradient(70vw 50vh at 100% -10%,rgba(128,0,255,.26),transparent 70%),
    radial-gradient(50vw 40vh at 0 30%,rgba(255,0,255,.12),transparent 70%);
  background-repeat:no-repeat;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:9;
  pointer-events:none;
  opacity:.5;
  mix-blend-mode:screen;
  background:repeating-linear-gradient(to bottom,rgba(255,255,255,.05) 0 1px,transparent 1px 3px);
}

img{max-width:100%;height:auto}

a{color:inherit}

:focus-visible{outline:2px solid var(--magenta);outline-offset:3px}

.mono{font-family:var(--mono)}

.mark{width:24px;height:24px;flex:0 0 auto;display:block}

span.mark{
  background:linear-gradient(135deg,var(--violet),var(--magenta));
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  box-shadow:0 0 14px rgba(255,0,255,.6);
}

/* 顶部状态条 */
.hud{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:13px clamp(14px,4vw,44px);
  border-bottom:1px solid var(--line);
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.16em;
  text-transform:uppercase;
}

.hud-brand{display:flex;align-items:center;gap:9px;color:var(--magenta)}
.hud-brand b{font-weight:700;color:var(--paper);letter-spacing:.22em;text-shadow:0 0 12px rgba(128,0,255,.9)}
.hud-sig{display:flex;align-items:center;gap:8px;color:var(--dim);white-space:nowrap;overflow:hidden}

.dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:var(--magenta);box-shadow:0 0 10px var(--magenta);animation:pulse 2.6s ease-in-out infinite}

/* 首屏 */
.hero{
  position:relative;
  min-height:45vh;
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding:clamp(24px,6vw,56px) clamp(16px,4vw,44px) clamp(22px,5vw,48px);
  overflow:hidden;
  border-bottom:1px solid var(--line);
}

.ghost{
  position:absolute;
  right:-.04em;
  top:-.22em;
  font-size:clamp(140px,36vw,360px);
  font-weight:900;
  line-height:.8;
  letter-spacing:-.04em;
  color:transparent;
  -webkit-text-stroke:1px rgba(255,0,255,.4);
  text-stroke:1px rgba(255,0,255,.4);
  user-select:none;
  pointer-events:none;
  will-change:transform;
}

.hero-in{position:relative;z-index:1;text-align:right;max-width:min(100%,920px)}

.kicker{
  display:block;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.4em;
  color:var(--violet);
  text-shadow:0 0 14px rgba(128,0,255,.9);
  margin-bottom:10px;
}

h1{
  position:relative;
  margin:0;
  font-size:clamp(2rem,8.4vw,5.2rem);
  font-weight:900;
  line-height:1.02;
  letter-spacing:-.015em;
  text-shadow:0 0 26px rgba(128,0,255,.6);
}

h1::after{
  content:attr(data-text);
  position:absolute;
  left:0;
  top:0;
  width:100%;
  color:var(--magenta);
  opacity:.45;
  mix-blend-mode:screen;
  clip-path:polygon(0 0,100% 0,100% 46%,0 46%);
  transform:translate(3px,-2px);
  animation:glitch 6.5s steps(1,end) infinite;
  pointer-events:none;
}

/* 主体：左栏索引 + 右栏正文 */
main{padding:clamp(26px,4vw,54px) clamp(16px,4vw,44px) 44px}

.wrap{
  display:grid;
  grid-template-columns:252px minmax(0,1fr);
  gap:clamp(22px,3.4vw,48px);
  align-items:start;
  max-width:1180px;
  margin:0 auto;
}

.side{
  position:sticky;
  top:18px;
  min-width:0;
}

.side small{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.32em;
  color:var(--violet);
  text-shadow:0 0 10px rgba(128,0,255,.85);
}

.side h2{
  margin:4px 0 14px;
  font-size:21px;
  font-weight:800;
  letter-spacing:.1em;
}

.side-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  border-top:1px solid var(--line);
}

.side-list a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:4px 10px;
  font-size:16px;
  color:var(--dim);
  text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.07);
  border-left:2px solid transparent;
  transition:color .18s,background .18s,border-color .18s;
}

.side-list a:hover,.side-list a:focus-visible{
  color:var(--paper);
  background:rgba(128,0,255,.16);
  border-left-color:var(--magenta);
}

.body{min-width:0}

.prose{max-width:72ch}

.prose div{scroll-margin-top:26px}
.prose div + div{
  margin-top:2.4em;
  padding-top:2.4em;
  border-top:1px solid var(--line);
}
.prose div:first-child{margin-top:0}

.prose h2{
  margin:0 0 .55em;
  font-size:clamp(1.45rem,3.6vw,2rem);
  font-weight:800;
  line-height:1.24;
  letter-spacing:.01em;
  text-shadow:0 0 18px rgba(255,0,255,.4);
}

.prose h3{
  margin:1.5em 0 .45em;
  font-size:1.16rem;
  font-weight:700;
  color:#fff;
}

.prose small{
  display:block;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.3em;
  color:var(--magenta);
  margin-bottom:8px;
  text-shadow:0 0 10px rgba(255,0,255,.75);
}

.prose p{margin:0 0 1em}

.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.25em}
.prose li{margin:.36em 0}
.prose li::marker{color:var(--magenta)}

.prose strong{color:#fff}

.prose a{
  color:#dcbcff;
  text-decoration:underline;
  text-decoration-color:var(--violet);
  text-underline-offset:3px;
}
.prose a:hover{color:#fff;background:rgba(128,0,255,.24)}

.prose img{
  display:block;
  margin:1.1em 0;
  border-radius:4px;
  border:1px solid var(--line);
}

.prose blockquote{
  margin:1.2em 0;
  padding:.4em 0 .4em 1em;
  border-left:2px solid var(--magenta);
  color:var(--dim);
}

/* 页脚 */
.foot{
  border-top:1px solid var(--line);
  padding:clamp(30px,4.6vw,54px) clamp(16px,4vw,44px) 34px;
  background:linear-gradient(180deg,rgba(13,13,13,0),rgba(128,0,255,.1));
}

.foot-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(22px,3.4vw,48px);
  max-width:1180px;
  margin:0 auto;
}

.sub{display:flex;flex-wrap:wrap;gap:8px;align-content:flex-start}
.sub label{
  width:100%;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.3em;
  color:var(--violet);
}
.sub input{
  flex:1 1 130px;
  min-height:44px;
  padding:0 12px;
  font:inherit;
  font-size:16px;
  color:var(--paper);
  background:#1a1524;
  border:1px solid var(--line);
  border-radius:4px;
}
.sub input::placeholder{color:#7d7393}
.sub button{
  min-height:44px;
  padding:0 20px;
  font:inherit;
  font-weight:700;
  color:#fff;
  background:linear-gradient(90deg,var(--violet),var(--magenta));
  border:0;
  border-radius:4px;
  cursor:pointer;
  box-shadow:0 0 18px rgba(255,0,255,.35);
}

.foot-nav dl{
  display:grid;
  grid-template-columns:max-content 1fr;
  column-gap:14px;
  row-gap:4px;
  margin:0;
}
.foot-nav dt{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--magenta);
  align-self:center;
}
.foot-nav dd{
  margin:0;
  display:flex;
  flex-wrap:wrap;
  gap:0 14px;
}
.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:15px;
  color:var(--paper);
  text-decoration:none;
}
.foot-nav a:hover{color:var(--magenta)}

.foot-meta address{
  font-style:normal;
  font-family:var(--mono);
  font-size:14px;
  line-height:1.95;
  color:var(--dim);
  word-break:break-all;
}
.foot-links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:0 14px;
  margin:10px 0 0;
  padding:0;
}
.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:15px;
  color:var(--dim);
  text-decoration:none;
}
.foot-links a:hover{color:var(--paper)}

.foot-base{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4px;
  max-width:1180px;
  margin:26px auto 0;
  padding-top:16px;
  border-top:1px dashed rgba(255,255,255,.13);
  text-align:center;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--dim);
}
.foot-base p{margin:0}

/* 底部固定导航 */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:20;
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px clamp(10px,3vw,28px);
  border-top:1px solid var(--line);
  background:rgba(13,13,13,.95);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}

.dock-brand{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  min-height:44px;
  padding-right:10px;
  text-decoration:none;
  border-right:1px solid var(--line);
}
.dock-brand b{
  font-size:15px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--paper);
  text-shadow:0 0 12px rgba(255,0,255,.6);
}

.dock-list{
  display:flex;
  flex:1 1 auto;
  gap:2px;
  list-style:none;
  margin:0;
  padding:0;
  overflow-x:auto;
  scrollbar-width:none;
}
.dock-list::-webkit-scrollbar{display:none}

.dock-list a{
  display:flex;
  align-items:center;
  gap:7px;
  min-height:44px;
  padding:0 11px;
  font-size:16px;
  white-space:nowrap;
  color:var(--dim);
  text-decoration:none;
  border-radius:4px;
  transition:color .16s,background .16s;
}
.dock-list a:hover,.dock-list a:focus-visible{color:#fff;background:rgba(128,0,255,.24)}

.ico{
  width:6px;
  height:6px;
  flex:0 0 auto;
  background:var(--magenta);
  box-shadow:0 0 8px var(--magenta);
}

@keyframes glitch{
  0%,86%,100%{transform:translate(3px,-2px);opacity:.45}
  88%{transform:translate(-5px,1px) skewX(-9deg);opacity:.8}
  92%{transform:translate(4px,2px) skewX(7deg);opacity:.3}
  96%{transform:translate(-2px,-1px);opacity:.6}
}

@keyframes pulse{
  0%,100%{opacity:1}
  50%{opacity:.22}
}

@media (max-width:960px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-meta{grid-column:1/-1}
}

@media (max-width:860px){
  .wrap{grid-template-columns:1fr}
  .side{position:static;top:auto}
  .side-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .prose{max-width:none}
  .hero{min-height:42vh}
}

@media (max-width:620px){
  body{font-size:16px;padding-bottom:80px}
  .hud{font-size:12px;letter-spacing:.1em}
  .hud-sig .mono{max-width:42vw;overflow:hidden;text-overflow:ellipsis}
  .foot-grid{grid-template-columns:1fr}
  .dock-brand b{display:none}
  .dock-brand{padding-right:8px}
  .dock-list a{padding:0 10px;font-size:16px}
  .side-list{grid-template-columns:1fr}
  .hero-in{max-width:100%}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}