:root{
  --bg:#0d0d0d;
  --bg-2:#120f19;
  --ink:#ece8f7;
  --dim:#a49bba;
  --p:#8000ff;
  --m:#ff00ff;
  --line:rgba(128,0,255,.34);
  --line-m:rgba(255,0,255,.34);
  --rail:238px;
  --cond:"Barlow Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --body:"Barlow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:400 17px/1.78 var(--body);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::after{
  content:"";position:fixed;inset:0;z-index:80;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.035) 0 1px,transparent 1px 4px);
}
img{max-width:100%;height:auto;display:block}
a{color:#ff7dff;text-decoration:none}
a:hover{color:#fff}
:focus-visible{outline:2px solid var(--m);outline-offset:3px}
h1,h2,h3{font-family:var(--cond);font-weight:700;line-height:1.14;letter-spacing:.02em;margin:0}
small{
  display:block;font-family:var(--body);font-weight:500;font-size:13px;line-height:1.2;
  letter-spacing:.34em;color:var(--m);margin:0 0 10px;text-shadow:0 0 12px rgba(255,0,255,.6);
}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.1em;padding-left:1.35em}
li{margin:0 0 .45em}

/* ---------- 左侧固定导轨 ---------- */
.rail{
  position:fixed;top:0;bottom:0;left:0;width:var(--rail);z-index:60;
  display:flex;flex-direction:column;gap:20px;
  padding:22px 14px 28px;overflow-y:auto;
  background:linear-gradient(180deg,#150f20 0%,#0a0910 62%,#0d0d0d 100%);
  border-right:1px solid var(--line);
}
.rail::before{
  content:"";position:absolute;top:0;right:-1px;width:1px;height:100%;
  background:linear-gradient(180deg,var(--m),transparent 55%,var(--p));
  opacity:.65;
}
.brand{
  display:flex;align-items:center;gap:11px;min-height:46px;padding:6px 8px;
  color:var(--ink);
}
.brand-img{width:34px;height:34px;object-fit:contain;flex:none}
.brand-cube{
  width:26px;height:26px;flex:none;
  background:linear-gradient(135deg,var(--m),var(--p));
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  box-shadow:0 0 16px rgba(255,0,255,.7);
}
.brand-txt{
  font:600 19px/1.24 var(--cond);letter-spacing:.13em;
  text-shadow:0 0 14px rgba(255,0,255,.7);
}
.rail-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.rail-nav a{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:11px 15px;
  border:1px solid var(--line-m);border-radius:999px;
  background:rgba(128,0,255,.09);color:var(--dim);
  font:500 16px/1.15 var(--body);letter-spacing:.05em;
  transition:color .18s,border-color .18s,background .18s,box-shadow .18s;
}
.rail-nav a:hover,.rail-nav a:focus-visible{
  color:#fff;border-color:var(--m);background:rgba(255,0,255,.17);
  box-shadow:0 0 0 1px rgba(255,0,255,.45),0 0 20px rgba(255,0,255,.4);
}
.no{font:600 12px/1 var(--mono);color:var(--m);letter-spacing:.08em;flex:none}
.nm{min-width:0}

/* ---------- 框架 ---------- */
.frame{
  margin-left:var(--rail);
  display:grid;grid-template-columns:minmax(0,1fr) 292px;
  gap:0 38px;padding:0 38px;
}
main{grid-column:1;min-width:0;padding-bottom:56px}

/* ---------- 头图 ---------- */
.hero{
  position:relative;display:flex;align-items:flex-end;
  min-height:45vh;margin:0 -38px 44px;padding:56px 38px 62px;
  overflow:hidden;
  border-bottom:1px solid var(--line-m);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 54px),0 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(62% 96% at 10% 22%,rgba(128,0,255,.5),transparent 72%),
    radial-gradient(52% 84% at 94% 6%,rgba(255,0,255,.32),transparent 68%);
}
.hero::after{
  content:"01";position:absolute;right:14px;bottom:-14px;z-index:1;
  font:800 clamp(96px,17vw,210px)/.78 var(--cond);
  color:transparent;-webkit-text-stroke:1px rgba(255,0,255,.34);
  pointer-events:none;user-select:none;
}
.hero-art{position:absolute;inset:0;z-index:0;margin:0;overflow:hidden}
.hero-img{
  width:100%;height:100%;object-fit:cover;opacity:.44;
  transform:scale(1.14);filter:saturate(1.18) contrast(1.08);
  will-change:transform;
}
.hero-void{
  display:block;width:100%;height:100%;
  background:repeating-linear-gradient(118deg,rgba(255,0,255,.14) 0 2px,transparent 2px 22px);
}
.hero-copy{position:relative;z-index:2;max-width:24em}
.hero h1{
  margin:0 0 14px;font-weight:800;
  font-size:clamp(38px,6.6vw,82px);line-height:1.03;letter-spacing:.01em;
  text-shadow:0 0 22px rgba(255,0,255,.6),0 0 64px rgba(128,0,255,.55);
  animation:glitch 6.5s infinite steps(1,end);
}
.hero-desc{
  margin:0;max-width:44ch;font-size:16px;line-height:1.7;color:#d6cee8;
  border-left:2px solid var(--m);padding-left:14px;
  text-shadow:0 0 18px rgba(13,13,13,.9);
}
@keyframes glitch{
  0%,90%,100%{transform:none}
  91%{transform:skewX(-3deg) translate3d(-3px,0,0)}
  93%{transform:skewX(2deg) translate3d(2px,0,0)}
  95%{transform:skewX(-1deg) translate3d(-1px,0,0)}
}

/* ---------- 正文区块 ---------- */
main > div:not(.hero){
  position:relative;padding:34px 0 42px;
  border-top:1px solid rgba(128,0,255,.22);
  scroll-margin-top:20px;overflow-wrap:break-word;
}
main > div:not(.hero):first-of-type{border-top:0}
main > div:not(.hero)::before{
  content:"";position:absolute;left:-18px;top:38px;width:6px;height:24px;
  background:linear-gradient(180deg,var(--m),var(--p));
  box-shadow:0 0 14px rgba(255,0,255,.85);
}
main h2{
  font-size:clamp(25px,3.2vw,38px);color:#fff;
  text-shadow:0 0 16px rgba(128,0,255,.85);margin:.1em 0 .62em;
}
main h3{font-size:clamp(20px,2.3vw,26px);color:#f3ecff;margin:1.5em 0 .5em}
main h4{font-family:var(--cond);font-size:19px;margin:1.2em 0 .4em;color:#f0e7ff}
main p{color:#d5cde3}
main strong{color:#fff;text-shadow:0 0 12px rgba(255,0,255,.5)}
main a{border-bottom:1px dashed rgba(255,0,255,.55)}
main a:hover{border-bottom-color:#fff}
main > div figure:not(.hero-art){
  margin:26px 0;padding:8px;border:1px solid var(--line-m);
  background:rgba(128,0,255,.06);
}
main > div figure:not(.hero-art) figcaption{
  margin:10px 2px 4px;font-size:15px;color:var(--dim);
}
main > div aside{
  margin:24px 0;padding:12px 18px;border-left:3px solid var(--m);
  background:linear-gradient(90deg,rgba(255,0,255,.11),transparent 82%);
}
main > div aside p:last-child{margin-bottom:0}
blockquote{
  margin:24px 0;padding:14px 20px;border:1px solid var(--line);
  background:rgba(128,0,255,.07);color:#e6dcf8;
}
blockquote p:last-child{margin-bottom:0}
main hr{border:0;border-top:1px dashed var(--line-m);margin:30px 0}
main table{width:100%;border-collapse:collapse;margin:22px 0;font-size:16px}
main th,main td{border:1px solid var(--line);padding:10px 12px;text-align:left}
main th{background:rgba(128,0,255,.16);color:#fff;font-weight:600}
main ul li::marker,main ol li::marker{color:var(--m)}

/* ---------- 右侧面板 ---------- */
.panel{
  grid-column:2;align-self:start;position:sticky;top:26px;
  margin-top:30px;padding:20px 18px 22px;
  border:1px solid var(--line-m);
  background:rgba(128,0,255,.07);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));
}
.panel h2{font-size:24px;margin:0 0 12px;color:#fff;text-shadow:0 0 14px rgba(255,0,255,.7)}
.panel ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.panel a{
  display:flex;align-items:center;min-height:42px;padding:8px 2px;
  color:var(--dim);border-bottom:1px dashed rgba(255,0,255,.18);
  font-size:16px;transition:color .16s,padding-left .16s;
}
.panel li:last-child a{border-bottom:0}
.panel a:hover,.panel a:focus-visible{color:#fff;padding-left:8px;text-shadow:0 0 12px var(--m)}

/* ---------- 页脚 ---------- */
.site-foot{
  grid-column:1 / -1;margin-top:40px;padding:38px 0 26px;
  border-top:1px solid var(--line-m);
}
.foot-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:28px 26px;
  border:1px solid rgba(255,0,255,.42);
  background:linear-gradient(102deg,rgba(128,0,255,.28),rgba(255,0,255,.1) 72%,transparent);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.cta-word{
  margin:0;font-family:var(--cond);font-weight:800;letter-spacing:.04em;
  font-size:clamp(26px,4vw,46px);line-height:1;
  text-shadow:0 0 22px rgba(255,0,255,.65);
}
.cta-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:12px 26px;border-radius:999px;
  border:1px solid var(--m);background:rgba(255,0,255,.18);color:#fff;
  font:500 16px/1 var(--body);letter-spacing:.08em;
  box-shadow:0 0 18px rgba(255,0,255,.35);
}
.cta-btn:hover{background:var(--m);color:#0d0d0d;border-color:var(--m)}
.foot-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;padding:34px 0 22px;
}
.foot-col h3{font-size:18px;margin:0 0 10px;color:#f2ebff}
.foot-col address{font-style:normal;color:var(--dim);font-size:16px}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col a{
  display:inline-flex;align-items:center;min-height:42px;padding:4px 0;
  color:var(--dim);font-size:16px;
}
.foot-col a:hover,.foot-col a:focus-visible{color:#fff}
.copyright{
  margin:0;padding-top:16px;text-align:center;font-size:15px;color:#847b9c;
  border-top:1px solid rgba(128,0,255,.2);
}

/* ---------- 入场 ---------- */
.js .rv{opacity:0;transform:translate3d(0,26px,0)}
.js .rv.in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}

/* ---------- 断点 ---------- */
@media (max-width:1180px){
  .frame{grid-template-columns:minmax(0,1fr) 248px;gap:0 26px;padding:0 26px}
  .hero{margin:0 -26px 38px;padding:48px 26px 56px}
  main > div:not(.hero)::before{left:-12px}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  .frame{grid-template-columns:minmax(0,1fr);padding:0 22px}
  .hero{margin:0 -22px 34px;padding:42px 22px 54px}
  .panel{position:static;grid-column:1;margin:30px 0 0}
  main > div:not(.hero)::before{left:-10px}
  .panel ul{flex-direction:row;flex-wrap:wrap;gap:0 18px}
  .panel li{flex:1 1 40%}
}
@media (max-width:860px){
  .rail{
    position:static;width:auto;height:auto;flex-direction:row;align-items:center;
    gap:14px;padding:12px 16px;overflow:visible;
    border-right:0;border-bottom:1px solid var(--line-m);
  }
  .rail::before{top:auto;bottom:-1px;right:0;width:100%;height:1px}
  .rail-nav{flex:1;min-width:0}
  .rail-nav ul{flex-direction:row;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
  .rail-nav ul::-webkit-scrollbar{display:none}
  .rail-nav a{white-space:nowrap}
  .frame{margin-left:0}
  .brand{padding:6px 2px}
  .brand-txt{font-size:17px}
  main > div:not(.hero){scroll-margin-top:16px}
}
@media (max-width:560px){
  body{font-size:16px}
  .frame{padding:0 16px}
  .hero{margin:0 -16px 30px;padding:38px 16px 48px;min-height:44vh}
  .hero-desc{font-size:15px}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:14px}
  .foot-col a{min-height:44px}
  .foot-cta{padding:24px 18px}
  .panel ul{flex-direction:column}
  .panel li{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
  .js .rv{opacity:1;transform:none}
  .hero-img{transform:none}
}

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