@import url('https://fonts.googleapis.com/css2?family=Cormorant+Infant:wght@300;400;500;600;700&family=Great+Vibes&display=swap');

:root{
  --ink:#1a1a2e;
  --deep:#07070e;
  --red:#ff0000;
  --pink:#ff006e;
  --ice:#f4f0ff;
  --dim:#a79fc4;
  --line:rgba(255,0,110,.3);
  --rail:15.5rem;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"DejaVu Sans Mono",monospace;
}

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

html{
  scroll-behavior:smooth;
  background:#05050b;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  min-height:100%;
  font-family:"Cormorant Infant","Songti SC","STSong","SimSun",Georgia,serif;
  font-size:17px;
  line-height:1.78;
  color:var(--ice);
  background:
    radial-gradient(1100px 620px at 88% -12%,rgba(255,0,110,.2),transparent 62%),
    radial-gradient(900px 520px at -8% 104%,rgba(255,0,0,.15),transparent 60%),
    linear-gradient(180deg,#0a0a16 0%,#07070e 55%,#05050b 100%);
  background-attachment:fixed;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,0,110,.075) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,0,110,.075) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:60;
  pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(0,0,0,.32) 0 1px,transparent 1px 3px);
  opacity:.55;
}

img{max-width:100%}
p{margin:0 0 1.1rem}
a{color:inherit}
a:focus-visible,
input:focus-visible,
button:focus-visible{outline:2px solid var(--pink);outline-offset:3px}

.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;
}

/* ---------- 左侧固定竖栏 ---------- */
.rail{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--rail);
  z-index:40;
  display:flex;
  flex-direction:column;
  gap:1.1rem;
  padding:1.25rem .95rem 1.5rem;
  background:linear-gradient(180deg,rgba(13,13,26,.97),rgba(6,6,13,.98));
  border-right:1px solid var(--line);
  box-shadow:1px 0 0 rgba(255,0,0,.4),26px 0 70px -38px rgba(255,0,110,.95);
  overflow-y:auto;
}

.rail-mark{
  display:flex;
  align-items:center;
  justify-content:center;
  width:54px;
  height:54px;
  flex:0 0 auto;
  border:1px solid var(--line);
  border-radius:15px;
  text-decoration:none;
  background:radial-gradient(circle at 28% 18%,rgba(255,0,110,.45),rgba(26,26,46,.92));
  box-shadow:inset 0 0 18px rgba(255,0,110,.5),0 0 16px rgba(255,0,0,.4);
  transition:box-shadow .25s ease,transform .25s ease;
}
.rail-mark:hover{box-shadow:inset 0 0 22px rgba(255,0,110,.8),0 0 24px rgba(255,0,110,.75);transform:translateY(-1px)}
.mark-img{width:44px;height:44px;object-fit:contain;display:block;border-radius:10px}
.mark-glyph{
  font-family:"Great Vibes","Cormorant Infant",serif;
  font-size:1.95rem;
  line-height:1;
  color:#fff;
  text-shadow:0 0 12px var(--pink);
}

.rail-nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:.42rem;
}
.rail-nav a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:.5rem .9rem;
  border-radius:999px;
  border:1px solid rgba(244,240,255,.14);
  background:rgba(255,255,255,.035);
  color:#ddd6f1;
  font-family:var(--mono);
  font-size:.95rem;
  letter-spacing:.01em;
  text-decoration:none;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,transform .2s ease,color .2s ease;
}
.rail-nav a:hover,
.rail-nav a:focus-visible{
  border-color:var(--pink);
  color:#fff;
  background:rgba(255,0,110,.17);
  box-shadow:0 0 16px rgba(255,0,110,.55);
  transform:translateX(3px);
}

.rail-search{margin-top:auto}
.rail-search input{
  width:100%;
  min-height:44px;
  padding:.45rem .85rem;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:#fff;
  font-family:var(--mono);
  font-size:16px;
}
.rail-search input::placeholder{color:#8e87a9}
.rail-search input:focus{border-color:var(--pink);box-shadow:0 0 16px rgba(255,0,110,.45)}

/* ---------- 主体 ---------- */
.shell{
  position:relative;
  z-index:1;
  margin-left:var(--rail);
}

.stage{display:block}

.hero{
  position:relative;
  isolation:isolate;
  min-height:100svh;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:4.6rem 1.35rem 6.5rem;
  overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 89%,0 100%);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(circle at 50% 44%,rgba(255,0,110,.32),transparent 58%),
    repeating-linear-gradient(0deg,rgba(255,0,110,.09) 0 1px,transparent 1px 34px),
    repeating-linear-gradient(90deg,rgba(255,0,110,.09) 0 1px,transparent 1px 34px),
    #0a0a16;
}
.hero-media{position:absolute;inset:0;z-index:-1}
.hero-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  opacity:.4;
  filter:contrast(1.16) saturate(.85) hue-rotate(-10deg);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:linear-gradient(180deg,rgba(6,6,13,.5),rgba(6,6,13,.86));
}

.hero-core{position:relative;max-width:44rem}
.hero-title{
  margin:0 0 1.1rem;
  font-family:"Great Vibes","Cormorant Infant","Songti SC","STSong",serif;
  font-weight:600;
  font-size:clamp(2.45rem,7.4vw,4.7rem);
  line-height:1.12;
  letter-spacing:.015em;
  color:#fff;
  text-shadow:0 0 3px #fff,0 0 14px rgba(255,0,110,.9),0 0 40px rgba(255,0,0,.6);
  animation:glitch 7s infinite steps(1,end);
}
.hero-sub{
  max-width:36rem;
  margin:0 auto;
  color:#e0daf3;
  font-size:1.05rem;
  text-shadow:0 0 12px rgba(26,26,46,.9);
}

@keyframes glitch{
  0%,91%,100%{transform:none;filter:none}
  92%{transform:translate(-2px,1px) skewX(-2deg);filter:hue-rotate(18deg)}
  94%{transform:translate(2px,-1px) skewX(2.4deg);filter:hue-rotate(-22deg)}
  96%{transform:translate(-1px,0) skewX(-1deg);filter:none}
}

/* ---------- 正文 ---------- */
.payload{
  position:relative;
  max-width:64rem;
  margin:0 auto;
  padding:3.6rem 1.5rem 5.5rem;
}
.kicker{
  display:inline-block;
  font-family:var(--mono);
  font-size:.95rem;
  letter-spacing:.26em;
  color:#ff6b88;
  padding:.18rem .85rem;
  border:1px solid rgba(255,0,110,.5);
  border-radius:999px;
  text-shadow:0 0 9px rgba(255,0,110,.8);
}
.payload-title{
  margin:.85rem 0 2.6rem;
  font-size:clamp(1.6rem,3.9vw,2.3rem);
  font-weight:600;
  line-height:1.28;
  color:#fff;
  text-shadow:0 0 16px rgba(255,0,110,.65);
}

.payload > article{
  padding-top:2.2rem;
  margin-top:2.4rem;
  border-top:1px solid rgba(255,0,110,.22);
  scroll-margin-top:5.6rem;
}
.payload > article:first-of-type{padding-top:0;margin-top:0;border-top:0}

.payload h2{
  margin:0 0 1.05rem;
  font-size:clamp(1.45rem,3.1vw,1.92rem);
  font-weight:600;
  line-height:1.32;
  color:#fff;
  text-shadow:0 0 13px rgba(255,0,110,.55);
}
.payload h3{
  margin:2rem 0 .7rem;
  font-size:1.16rem;
  line-height:1.4;
  color:#ffd8e5;
  text-shadow:0 0 10px rgba(255,0,110,.4);
}
.payload p{max-width:63ch;color:#e3ddf3}
.payload ul,
.payload ol{max-width:63ch;margin:0 0 1.3rem;padding-left:1.4rem}
.payload li{margin:.42rem 0;color:#e3ddf3}
.payload ul li::marker{color:var(--pink)}
.payload ol li::marker{color:#ff5a7a;font-family:var(--mono)}
.payload a{
  color:#ff6b94;
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-color:rgba(255,0,110,.6);
  transition:color .18s ease,text-shadow .18s ease;
}
.payload a:hover{color:#fff;text-shadow:0 0 12px rgba(255,0,110,.95)}
.payload strong{color:#fff}
.payload img{
  display:block;
  height:auto;
  margin:1.5rem 0;
  border-radius:14px;
  box-shadow:0 0 0 1px rgba(255,0,110,.4),0 22px 46px -26px rgba(255,0,0,.9);
}
.payload blockquote{
  margin:1.6rem 0;
  padding:.95rem 1.15rem;
  border-left:2px solid var(--pink);
  border-radius:0 14px 14px 0;
  background:rgba(255,0,110,.09);
  color:#f0eaff;
}
.payload blockquote p:last-child{margin-bottom:0}
.payload table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:1.4rem 0;
  font-size:.98rem;
}
.payload th,
.payload td{
  padding:.55rem .65rem;
  border-bottom:1px solid rgba(255,0,110,.25);
  text-align:left;
  vertical-align:top;
}
.payload th{color:#ffd8e5}
.payload hr{
  border:0;
  height:1px;
  margin:2.2rem 0;
  background:linear-gradient(90deg,transparent,rgba(255,0,110,.6),transparent);
}
.payload code{
  font-family:var(--mono);
  font-size:.94em;
  padding:.1rem .35rem;
  border-radius:6px;
  background:rgba(255,0,110,.16);
  color:#ffd8e5;
}

/* ---------- 页脚 ---------- */
.foot{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.25fr 1.15fr 1fr;
  gap:2.1rem 1.8rem;
  padding:3.4rem 1.5rem 1.6rem;
  border-top:1px solid rgba(255,0,110,.45);
  background:linear-gradient(180deg,rgba(255,0,110,.07),transparent 42%),#06060d;
}
.foot::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--red),var(--pink),transparent);
  opacity:.8;
}
.foot-col{min-width:0}
.foot-brand{
  margin:0 0 1rem;
  font-family:"Great Vibes","Cormorant Infant",serif;
  font-size:1.65rem;
  line-height:1.3;
  color:#fff;
  text-shadow:0 0 18px rgba(255,0,110,.75);
}
.to-top{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:.4rem 1rem;
  border-radius:999px;
  border:1px solid var(--line);
  color:#ddd6f1;
  font-family:var(--mono);
  font-size:.95rem;
  text-decoration:none;
  transition:border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.to-top:hover{border-color:var(--pink);color:#fff;box-shadow:0 0 16px rgba(255,0,110,.6)}
.foot-h{
  margin:0 0 .9rem;
  font-size:.95rem;
  font-family:var(--mono);
  font-weight:400;
  letter-spacing:.2em;
  color:#ff6b88;
}
.sub{display:flex;flex-wrap:wrap;gap:.5rem}
.sub-in{
  flex:1 1 7.5rem;
  min-width:0;
  min-height:44px;
  padding:.4rem .85rem;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:#fff;
  font-family:var(--mono);
  font-size:16px;
}
.sub-in::placeholder{color:#8e87a9}
.sub-btn{
  min-height:44px;
  padding:.4rem 1.1rem;
  border-radius:999px;
  border:1px solid var(--pink);
  background:rgba(255,0,110,.18);
  color:#fff;
  font-family:var(--mono);
  font-size:.95rem;
  cursor:pointer;
  transition:background .2s ease,box-shadow .2s ease;
}
.sub-btn:hover{background:rgba(255,0,110,.42);box-shadow:0 0 18px rgba(255,0,110,.7)}
.foot-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:.2rem .85rem;
}
.foot-list a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  color:#c8c1e1;
  font-family:var(--mono);
  font-size:.95rem;
  text-decoration:none;
}
.foot-list a:hover{color:#fff;text-shadow:0 0 11px var(--pink)}
.foot-bar{
  grid-column:1/-1;
  margin:1.5rem 0 0;
  padding-top:1.2rem;
  border-top:1px solid rgba(255,0,110,.18);
  text-align:center;
  font-family:var(--mono);
  font-size:.92rem;
  color:#918aad;
}

/* ---------- 滚动显现 ---------- */
.js .rv{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
.js .rv.on{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (max-width:860px){
  .rail{
    inset:0 0 auto 0;
    width:auto;
    height:auto;
    flex-direction:row;
    align-items:center;
    gap:.55rem;
    padding:.45rem .6rem;
    overflow-x:auto;
    overflow-y:hidden;
    border-right:0;
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(255,0,0,.35),0 18px 50px -30px rgba(255,0,110,.95);
  }
  .rail-mark{width:46px;height:46px;border-radius:12px}
  .mark-img{width:36px;height:36px}
  .mark-glyph{font-size:1.6rem}
  .rail-nav{flex:1 1 auto;min-width:0}
  .rail-nav ul{flex-direction:row;gap:.42rem}
  .rail-nav a{white-space:nowrap;min-height:42px}
  .rail-nav a:hover{transform:none}
  .rail-search{flex:0 0 auto;width:8.6rem;margin:0}
  .shell{margin-left:0;padding-top:3.7rem}
  .hero{min-height:calc(100svh - 3.7rem);padding:3.4rem 1.1rem 4.6rem;clip-path:polygon(0 0,100% 0,100% 94%,0 100%)}
  .payload{padding:2.6rem 1.1rem 3.6rem}
  .payload > article{scroll-margin-top:4.6rem}
  .foot{grid-template-columns:1fr;gap:1.7rem;padding:2.5rem 1.1rem 1.3rem}
  .foot-bar{margin-top:.6rem}
}

@media (max-width:430px){
  .rail-search{width:7.4rem}
  .payload h2{font-size:1.42rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-title{animation:none}
  .js .rv{opacity:1;transform:none;transition:none}
  .rail-nav a,.to-top,.sub-btn{transition:none}
}

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