@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Nunito:wght@300;400;500;600;700&display=swap');

:root{
  --bg:#0d0d0d;
  --panel:#141021;
  --panel-2:#1b1530;
  --ink:#f4eefc;
  --dim:#a396be;
  --pri:#8000ff;
  --sec:#ff00ff;
  --line:rgba(255,0,255,.24);
  --line-2:rgba(128,0,255,.36);
  --dock-h:78px;
}

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

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

body{
  margin:0;
  min-height:100vh;
  color:var(--ink);
  font-family:'Nunito','PingFang SC','Microsoft YaHei',-apple-system,sans-serif;
  font-size:17px;
  line-height:1.72;
  overflow-wrap:break-word;
  background:
    radial-gradient(880px 480px at 88% -12%, rgba(128,0,255,.30), transparent 70%),
    radial-gradient(680px 400px at -8% 18%, rgba(255,0,255,.16), transparent 66%),
    var(--bg);
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:60;
  pointer-events:none;
  background:repeating-linear-gradient(to bottom, rgba(255,255,255,.05) 0 1px, transparent 1px 4px);
  opacity:.45;
  mix-blend-mode:screen;
}

a{color:var(--sec);text-decoration:none;transition:color .18s ease,text-shadow .18s ease,transform .18s ease;}
a:hover{color:#fff;text-shadow:0 0 12px var(--sec);}

:focus-visible{outline:2px dashed var(--sec);outline-offset:2px;}

.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;
}

.frame{
  max-width:1160px;
  margin:0 auto;
  padding:0 clamp(14px,4vw,28px) calc(var(--dock-h) + 46px);
}

/* ---------- 底部固定终端条 ---------- */
.dock{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:50;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px clamp(12px,3.4vw,26px);
  background:rgba(9,7,15,.94);
  border-top:1px solid var(--line-2);
  box-shadow:0 -14px 44px rgba(128,0,255,.28);
  backdrop-filter:blur(12px);
}

.brand{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:2px 6px 2px 0;
  color:var(--ink);
  flex:0 0 auto;
}
.brand:hover{transform:translateY(-1px);}

.brand img{width:30px;height:30px;display:block;object-fit:contain;}

.brand-mark{
  width:30px;height:30px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--pri),var(--sec));
  color:#0d0d0d;
  font-family:'Fredoka',sans-serif;
  font-weight:700;
  font-size:17px;
  line-height:1;
  text-shadow:none;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  animation:flick 7s infinite steps(1,end);
}

.brand-name{
  font-family:'Fredoka',sans-serif;
  font-weight:600;
  font-size:1.02rem;
  letter-spacing:.08em;
  white-space:nowrap;
}

@keyframes flick{
  0%,95%,100%{opacity:1}
  96%{opacity:.5}
  97%{opacity:1}
  98%{opacity:.68}
}

.dock-search{
  display:flex;
  gap:6px;
  flex:1 1 auto;
  min-width:0;
}

.dock-search input{
  flex:1 1 auto;
  min-width:0;
  height:44px;
  padding:0 12px;
  background:#100c1a;
  border:1px solid var(--line-2);
  color:var(--ink);
  font-family:inherit;
  font-size:16px;
}
.dock-search input::placeholder{color:var(--dim);}

.dock-search button{
  flex:0 0 auto;
  height:44px;
  padding:0 16px;
  border:0;
  cursor:pointer;
  font-family:inherit;
  font-size:16px;
  font-weight:700;
  color:#0d0d0d;
  background:linear-gradient(120deg,var(--pri),var(--sec));
  clip-path:polygon(0 0,100% 0,100% 64%,76% 100%,0 100%);
  transition:filter .18s ease;
}
.dock-search button:hover{filter:brightness(1.15);}

.dock-menu{position:relative;flex:0 0 auto;}

.dock-menu > summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:0 14px;
  font-size:.95rem;
  letter-spacing:.06em;
  color:var(--ink);
  border:1px solid var(--line);
  background:rgba(255,0,255,.07);
  text-shadow:none;
  white-space:nowrap;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease;
}
.dock-menu > summary::-webkit-details-marker{display:none;}

.dock-menu[open] > summary{
  background:var(--sec);
  border-color:var(--sec);
  color:#0d0d0d;
  box-shadow:0 0 24px rgba(255,0,255,.6);
}

.dock-menu > menu{
  position:absolute;
  right:0;
  bottom:calc(100% + 12px);
  margin:0;
  padding:8px;
  list-style:none;
  min-width:236px;
  background:#120d1f;
  border:1px solid var(--line);
  box-shadow:0 0 34px rgba(128,0,255,.5);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);
}

.dock-menu menu a{
  display:flex;
  align-items:center;
  gap:11px;
  min-height:44px;
  padding:0 12px;
  color:var(--ink);
  font-size:.98rem;
}
.dock-menu menu a:hover{
  background:rgba(128,0,255,.3);
  color:#fff;
  transform:translateX(2px);
}

.tick{
  flex:0 0 8px;
  width:8px;height:8px;
  background:var(--pri);
  box-shadow:0 0 9px var(--pri);
  transform:rotate(45deg);
}
menu li:nth-child(2n) .tick,
.rail li:nth-child(2n) .tick{
  background:var(--sec);
  box-shadow:0 0 9px var(--sec);
}

/* ---------- 版式 ---------- */
main{padding-top:clamp(22px,5vw,44px);}

.doc{
  display:grid;
  grid-template-columns:minmax(0,1fr) 286px;
  gap:clamp(20px,3vw,44px);
  align-items:start;
}

.hero{grid-column:1/-1;}

.eyebrow{
  margin:0;
  font-size:.82rem;
  letter-spacing:.28em;
  color:var(--sec);
  text-shadow:0 0 12px rgba(255,0,255,.7);
}

.hero h1{
  font-family:'Fredoka',sans-serif;
  font-weight:600;
  font-size:clamp(1.85rem,5.6vw,3.25rem);
  line-height:1.16;
  margin:.34em 0 .44em;
  letter-spacing:.01em;
  text-shadow:0 0 18px rgba(255,0,255,.55),0 0 42px rgba(128,0,255,.5);
  animation:glitchIn .55s ease-out both;
}

@keyframes glitchIn{
  0%{opacity:0;transform:translateX(-6px) skewX(9deg)}
  45%{opacity:.7;transform:translateX(3px) skewX(-4deg)}
  100%{opacity:1;transform:none}
}

.lead{
  margin:0;
  max-width:60ch;
  color:#d9cdea;
  font-size:1.04rem;
}

.hero-media{
  margin-top:20px;
  overflow:hidden;
  line-height:0;
}

.hero-media img{
  width:100%;
  height:auto;
  display:block;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
  filter:saturate(1.15) contrast(1.06);
  will-change:transform;
}

.band{
  height:8px;
  margin-top:22px;
  background:linear-gradient(90deg,var(--pri),var(--sec) 46%,rgba(255,0,255,0) 96%);
  clip-path:polygon(0 0,100% 0,calc(100% - 20px) 100%,0 100%);
}

.brief{
  grid-column:1;
  margin-top:6px;
  padding:20px 22px;
  background:var(--panel);
  border-left:3px solid var(--sec);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%);
}
.brief p{margin:0 0 .8em;color:#ddd2ec;}
.brief p:last-child{margin-bottom:0;}

h2,h3{
  font-family:'Fredoka',sans-serif;
  font-weight:600;
  line-height:1.3;
  letter-spacing:.02em;
  margin:0 0 .4em;
}
h2{font-size:clamp(1.28rem,3.4vw,1.8rem);}
h3{font-size:clamp(1.1rem,2.6vw,1.32rem);}

hr{
  border:0;
  height:2px;
  width:100%;
  margin:0 0 1.05em;
  background:linear-gradient(90deg,var(--sec),rgba(128,0,255,.65) 36%,rgba(128,0,255,0) 82%);
}

/* ---------- 正文 ---------- */
.prose{
  grid-column:1;
  min-width:0;
}

.prose > article{
  padding:24px 0;
  border-bottom:1px dashed rgba(255,255,255,.12);
  scroll-margin-top:20px;
  scroll-margin-bottom:96px;
}
.prose > article:first-child{padding-top:8px;}
.prose > article:last-child{border-bottom:0;}

.prose h2{
  color:#fff;
  text-shadow:0 0 16px rgba(128,0,255,.75);
}

.prose p{margin:0 0 1em;}
.prose ul,.prose ol{margin:0 0 1em;padding-left:1.35em;}
.prose li{margin:.36em 0;}
.prose li::marker{color:var(--sec);}

.prose strong{color:#fff;}
.prose em{color:var(--sec);font-style:normal;}

.prose a{text-decoration:underline;text-underline-offset:3px;}

.prose blockquote{
  margin:1.1em 0;
  padding:12px 16px;
  background:rgba(128,0,255,.12);
  border-left:3px solid var(--pri);
  color:#d5c8e8;
}
.prose blockquote p:last-child{margin-bottom:0;}

.prose img{
  max-width:100%;
  height:auto;
  display:block;
  margin:1.1em 0;
}

.prose table{
  width:100%;
  border-collapse:collapse;
  margin:1.1em 0;
  font-size:.96rem;
}
.prose th,.prose td{
  border:1px solid rgba(255,0,255,.22);
  padding:9px 11px;
  text-align:left;
  vertical-align:top;
}
.prose th{background:rgba(128,0,255,.22);color:#fff;}

.prose pre{
  overflow-x:auto;
  padding:12px 14px;
  background:#110d1c;
  border:1px solid var(--line-2);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.92rem;
  line-height:1.6;
}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.94em;
  color:#e9d8ff;
}

/* ---------- 右侧速览 ---------- */
.rail{
  grid-column:2;
  position:sticky;
  top:24px;
  padding:18px 18px 20px;
  background:rgba(20,16,33,.78);
  border:1px solid var(--line-2);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 16px),calc(100% - 16px) 100%,0 100%);
}
.rail h2{font-size:1.06rem;letter-spacing:.08em;}
.rail hr{height:1px;margin-bottom:.9em;background:linear-gradient(90deg,var(--pri),rgba(255,0,255,0));}
.rail ul{list-style:none;margin:0;padding:0;}
.rail a{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:40px;
  padding:2px 0;
  color:var(--ink);
  font-size:.96rem;
}
.rail a:hover{color:var(--sec);transform:translateX(3px);}
.rail .note{
  margin:14px 0 0;
  padding-top:12px;
  border-top:1px solid rgba(255,255,255,.12);
  color:var(--dim);
  font-size:.86rem;
  line-height:1.6;
}

/* ---------- 页脚 ---------- */
footer{
  margin-top:64px;
  padding-top:30px;
  border-top:1px solid var(--line-2);
}

.foot-brand{
  margin:0 0 8px;
  font-family:'Fredoka',sans-serif;
  font-weight:700;
  font-size:clamp(2.5rem,13vw,6.2rem);
  line-height:.95;
  letter-spacing:.02em;
  background:linear-gradient(100deg,var(--pri),var(--sec) 68%,#ffffff);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

footer small{
  display:block;
  color:var(--dim);
  font-size:.88rem;
  letter-spacing:.05em;
  padding-bottom:6px;
}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  .doc{grid-template-columns:minmax(0,1fr);}
  .rail{position:static;grid-column:1;margin-top:8px;}
  .hero,.brief,.prose{grid-column:1;}
  .prose > article{scroll-margin-bottom:110px;}
}

@media (max-width:560px){
  body{font-size:16.5px;}
  .brand-name{display:none;}
  .dock{gap:8px;}
  .dock-search button{padding:0 12px;}
  .dock-menu > summary{padding:0 11px;font-size:.9rem;}
  .brief{padding:16px 16px 18px;}
  .doc{gap:18px;}
  .prose > article{padding:20px 0;}
  .foot-brand{margin-bottom:10px;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation:none !important;transition:none !important;}
  .hero-media img{transform:none !important;}
}

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