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

:root{
  --red:#ff0000;
  --pink:#ff006e;
  --ink:#1a1a2e;
  --void:#0a0a14;
  --panel:#12121f;
  --text:#ececf5;
  --dim:#a6a6bf;
  --line:rgba(255,0,110,.28);
  --dock-h:74px;
  --font:'Outfit',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:clip}
body{
  margin:0;
  overflow-x:clip;
  background:var(--void);
  color:var(--text);
  font:400 17px/1.7 var(--font);
  padding-bottom:calc(var(--dock-h) + 24px);
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:60;
  pointer-events:none;
  opacity:.5;
  background:repeating-linear-gradient(to bottom,rgba(255,255,255,.04) 0 1px,transparent 1px 3px);
  mix-blend-mode:screen;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:59;
  pointer-events:none;
  background:
    radial-gradient(120% 70% at 50% -10%,rgba(255,0,110,.14),transparent 60%),
    radial-gradient(90% 60% at 50% 110%,rgba(255,0,0,.12),transparent 60%);
  mix-blend-mode:screen;
}
a{color:var(--pink);text-decoration:none}
a:hover{color:#fff;text-shadow:0 0 10px var(--pink)}
:focus-visible{outline:2px solid var(--pink);outline-offset:3px}

.skip{
  position:fixed;
  left:.8rem;
  top:.6rem;
  z-index:80;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 1rem;
  background:var(--pink);
  color:#fff;
  font-weight:700;
  transform:translateY(-200%);
}
.skip:focus{transform:none}

/* 底部固定导航条 */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:.4rem;
  min-height:var(--dock-h);
  padding:.4rem .7rem;
  border-top:1px solid var(--line);
  background:rgba(10,10,20,.94);
  box-shadow:0 -10px 34px rgba(255,0,110,.16);
  backdrop-filter:blur(8px);
}
.dock-side{display:flex;align-items:center;gap:.15rem;min-width:0}
.dock-right{justify-content:flex-end}
.dock a,.dock summary{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 .62rem;
  color:var(--text);
  font-size:.95rem;
  letter-spacing:.02em;
  white-space:nowrap;
}
.dock a:hover,.dock summary:hover{color:#fff;background:rgba(255,0,110,.16)}
.dock-brand{
  grid-column:2;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  min-height:44px;
  padding:0 .5rem;
  color:#fff;
  font-weight:700;
  font-size:.95rem;
  letter-spacing:.07em;
  justify-self:center;
  text-align:center;
}
.dot{
  display:inline-block;
  width:10px;
  height:10px;
  flex:0 0 auto;
  background:var(--red);
  box-shadow:0 0 12px var(--red),0 0 22px rgba(255,0,110,.7);
}
.dot.big{width:18px;height:18px;margin-bottom:.6rem}
.dock-more{position:relative}
.dock-more summary{
  cursor:pointer;
  color:#fff;
  border:1px solid var(--line);
  list-style:none;
}
.dock-more summary::-webkit-details-marker{display:none}
.dock-more[open] summary{background:rgba(255,0,110,.2)}
.dock-panel{
  position:absolute;
  left:0;
  bottom:calc(100% + .55rem);
  display:grid;
  min-width:11rem;
  padding:.35rem;
  border:1px solid var(--line);
  background:var(--panel);
  box-shadow:0 0 26px rgba(255,0,110,.3);
}
.dock-panel a{justify-content:flex-start}
.dock a.dock-cta{
  background:var(--red);
  color:#fff;
  font-weight:700;
  letter-spacing:.04em;
  box-shadow:0 0 18px rgba(255,0,0,.55);
}
.dock a.dock-cta:hover{background:var(--pink);box-shadow:0 0 24px var(--pink)}

/* 顶部主视觉 */
.hero{
  position:relative;
  display:grid;
  place-items:center;
  min-height:45vh;
  padding:clamp(2.4rem,7vw,4.4rem) clamp(1rem,5vw,2rem);
  overflow:hidden;
  text-align:center;
  background:
    radial-gradient(circle at 50% 24%,rgba(255,0,110,.26),transparent 62%),
    linear-gradient(180deg,#151528,#0a0a14 86%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 3rem),0 100%);
}
.hero-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.4;
  filter:saturate(1.2) contrast(1.06) hue-rotate(-6deg);
  will-change:transform;
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.85;
  background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:18px 18px;
}
.hero-inner{position:relative;z-index:2;max-width:860px}
h1{
  margin:0 0 1rem;
  font-size:clamp(1.9rem,6.4vw,4rem);
  line-height:1.1;
  font-weight:900;
  letter-spacing:.02em;
  color:#fff;
  text-shadow:0 0 18px rgba(255,0,110,.7),0 0 46px rgba(255,0,0,.45);
}
.glitch{position:relative;display:inline-block}
.glitch::before,.glitch::after{
  content:attr(data-text);
  position:absolute;
  left:0;
  top:0;
  width:100%;
  overflow:hidden;
  pointer-events:none;
}
.glitch::before{color:var(--pink);clip-path:inset(0 0 56% 0);animation:gl-a 5.5s infinite steps(1)}
.glitch::after{color:var(--red);clip-path:inset(54% 0 0 0);animation:gl-b 4.3s infinite steps(1)}
@keyframes gl-a{0%,92%,100%{transform:translate(0,0)}93%{transform:translate(-3px,-2px)}96%{transform:translate(2px,1px)}}
@keyframes gl-b{0%,90%,100%{transform:translate(0,0)}91%{transform:translate(3px,2px)}95%{transform:translate(-2px,-1px)}}
.lede{
  margin:0 auto;
  max-width:44rem;
  color:#c8c8da;
  font-size:1rem;
  line-height:1.75;
}

/* 正文骨架 */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(2rem,5vw,3.4rem) clamp(1rem,4vw,2.5rem) clamp(3rem,7vw,4.5rem);
}
.stage{
  display:grid;
  grid-template-columns:minmax(0,1fr) 272px;
  gap:clamp(1.5rem,4vw,3rem);
  align-items:start;
}
.prose{min-width:0}
.prose article{
  margin:0 0 clamp(2rem,5vw,3rem);
  padding:0 0 clamp(1.8rem,4.5vw,2.8rem);
  border-bottom:2px solid rgba(255,0,110,.22);
  scroll-margin-top:1.5rem;
  scroll-margin-bottom:calc(var(--dock-h) + 18px);
}
.prose article:last-child{margin-bottom:0;border-bottom:0;padding-bottom:0}
.prose h2{
  margin:0 0 .9rem;
  font-size:clamp(1.35rem,3.2vw,1.95rem);
  line-height:1.25;
  font-weight:900;
  letter-spacing:.02em;
  color:#fff;
  text-shadow:0 0 14px rgba(255,0,110,.42);
}
.prose h3{
  margin:1.6rem 0 .6rem;
  font-size:1.12rem;
  font-weight:700;
  color:#fff;
  letter-spacing:.02em;
}
.prose h4{margin:1.2rem 0 .5rem;font-size:1.02rem;font-weight:700;color:#fff}
.prose p{margin:0 0 1.05rem;color:#d8d8e6}
.prose ul,.prose ol{margin:0 0 1.1rem;padding-left:1.35rem;color:#d8d8e6}
.prose li{margin:.35rem 0}
.prose li::marker{color:var(--pink)}
.prose strong,.prose b{color:#fff}
.prose a{border-bottom:1px solid rgba(255,0,110,.55)}
.prose blockquote{
  margin:0 0 1.2rem;
  padding:.9rem 1.1rem;
  border-left:3px solid var(--red);
  background:rgba(255,0,110,.08);
  color:#e4e4f0;
}
.prose code,.prose pre{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.95em;
}
.prose code{background:rgba(255,0,110,.16);padding:.08em .36em}
.prose pre{
  margin:0 0 1.2rem;
  padding:.9rem 1rem;
  overflow-x:auto;
  background:#0f0f1c;
  border:1px solid var(--line);
}
.prose pre code{background:none;padding:0}
.prose img{display:block;max-width:100%;height:auto;margin:0 0 1.2rem;border:1px solid var(--line)}
.prose table{
  display:block;
  width:100%;
  overflow-x:auto;
  margin:0 0 1.2rem;
  border-collapse:collapse;
  font-size:.98rem;
}
.prose th,.prose td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left}
.prose th{background:rgba(255,0,110,.14);color:#fff}

/* 右侧栏 */
.rail{
  position:sticky;
  top:1.4rem;
  order:2;
  padding:1.05rem 1rem 1.1rem;
  border:1px solid var(--line);
  border-bottom:3px solid var(--red);
  background:var(--panel);
  box-shadow:0 0 26px rgba(255,0,110,.14);
}
.rail-h{
  margin:0 0 .8rem;
  font-size:.95rem;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--pink);
}
.rail .subtitle{
  margin:-.45rem 0 .85rem;
  font-size:.9rem;
  line-height:1.5;
  color:var(--dim);
}
.rail-list{
  counter-reset:rail;
  list-style:none;
  margin:0 0 1rem;
  padding:0;
}
.rail-list li{counter-increment:rail}
.rail-list a{
  display:flex;
  align-items:center;
  gap:.55rem;
  min-height:42px;
  padding:.1rem 0;
  font-size:.95rem;
  color:var(--text);
  border-bottom:1px dashed rgba(255,255,255,.1);
}
.rail-list a::before{
  content:counter(rail,decimal-leading-zero);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--pink);
}
.rail-list a:hover{color:#fff}
.to-top{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 .9rem;
  border:1px solid var(--red);
  background:rgba(255,0,0,.14);
  color:#fff;
  font-size:.95rem;
  letter-spacing:.03em;
}
.to-top:hover{background:var(--red);color:#fff}

/* 页脚 */
.foot{
  border-top:1px solid var(--line);
  padding:clamp(2rem,6vw,3.6rem) clamp(1rem,4vw,2.5rem) 1.1rem;
  background:linear-gradient(180deg,#101020,#08080f 62%);
}
.foot-cta{
  max-width:820px;
  margin:0 auto clamp(2rem,6vw,3.4rem);
  padding:clamp(1.3rem,4vw,2.3rem) clamp(.9rem,4vw,2rem);
  text-align:center;
  border:1px solid var(--line);
  border-bottom:3px solid var(--red);
  background:radial-gradient(circle at 50% 0,rgba(255,0,110,.18),transparent 72%);
}
.foot-cta h2{
  margin:0 0 .7rem;
  font-size:clamp(1.3rem,3.4vw,1.85rem);
  font-weight:900;
  letter-spacing:.02em;
  color:#fff;
  text-shadow:0 0 16px rgba(255,0,110,.6);
}
.subtitle{
  margin:0 0 1.2rem;
  color:var(--dim);
  font-size:1rem;
  line-height:1.7;
}
.cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:0 1.6rem;
  background:var(--red);
  color:#fff;
  font-weight:700;
  letter-spacing:.06em;
  box-shadow:0 0 22px rgba(255,0,0,.5);
}
.cta:hover{background:var(--pink);color:#fff;box-shadow:0 0 26px var(--pink)}
.foot-cols{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:1.6rem;
  max-width:1180px;
  margin:0 auto;
}
.foot-col{min-width:0}
.foot-cols p{margin:0 0 .5rem;color:var(--dim);font-size:.95rem;line-height:1.65}
.foot-brand{margin:0 0 .7rem;display:flex;align-items:center;gap:.5rem;color:#fff;font-weight:700;letter-spacing:.06em;font-size:.98rem}
.foot-nav nav{display:block}
.foot-nav dl{margin:0}
.foot-nav dt{margin:0}
.foot-nav a{
  display:flex;
  align-items:center;
  min-height:42px;
  font-size:.95rem;
  color:var(--text);
  border-bottom:1px dashed rgba(255,255,255,.09);
}
.foot-nav a:hover{color:#fff}
.foot-bar{
  max-width:1180px;
  margin:clamp(1.8rem,5vw,2.8rem) auto 0;
  padding-top:1rem;
  border-top:1px solid rgba(255,255,255,.09);
  text-align:center;
}
.foot-bar p{margin:0;color:#8f8fa8;font-size:.95rem;letter-spacing:.04em}

/* 入场 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:960px){
  .stage{grid-template-columns:1fr}
  .rail{position:static;margin-top:2rem}
  .foot-cols{grid-template-columns:1fr 1fr;gap:1.4rem}
}
@media (max-width:620px){
  .hero{min-height:42vh;clip-path:polygon(0 0,100% 0,100% calc(100% - 2rem),0 100%)}
  .dock{grid-template-columns:auto 1fr auto;gap:.25rem;padding:.35rem .4rem}
  .dock a,.dock summary{padding:0 .45rem;font-size:.92rem}
  .dock-left a:not(:first-child){display:none}
  .dock-right > a:not(.dock-cta){display:none}
  .dock-brand{font-size:.85rem;letter-spacing:0;padding:0 .25rem;gap:.35rem}
  .dock-right .dock-panel{left:auto;right:0}
  .foot-cols{grid-template-columns:1fr}
  .rail-list a{min-height:44px}
  .foot-nav a{min-height:44px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .glitch::before,.glitch::after{animation:none}
  .hero-img{transform:none !important}
  .reveal{opacity:1;transform:none;transition:none}
}

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