@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:wght@400;700&family=Crimson+Pro:wght@400;500;600;700&display=swap');

:root{
  --red:#ff0000;
  --pink:#ff1493;
  --ink:#261717;
  --bg:#130c0c;
  --bg2:#1e1011;
  --fg:#f8efef;
  --dim:#cbb2b5;
  --line:rgba(255,20,147,.24);
  --soft:rgba(255,255,255,.07);
  --r:4px;
  --body:'Atkinson Hyperlegible',-apple-system,BlinkMacSystemFont,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --head:'Crimson Pro',Georgia,'Songti SC','Times New Roman',serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--body);font-size:1.0625rem;line-height:1.75;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.3em}
li{margin:.2em 0}
h1,h2,h3,h4{font-family:var(--head);font-weight:600;line-height:1.16;margin:0 0 .5em;letter-spacing:.01em}
h1{font-size:clamp(2rem,5.6vw,4rem)}
h2{font-size:clamp(1.4rem,3vw,2rem)}
h3{font-size:1.2rem}
strong{color:#fff}
hr{border:0;border-top:1px solid var(--soft);margin:2rem 0}

/* 极光底纹 */
.aurora{
  position:fixed;inset:-20% -20% -20% -20%;z-index:-1;pointer-events:none;
  background:
    radial-gradient(38% 42% at 18% 8%, rgba(255,0,0,.42), transparent 62%),
    radial-gradient(46% 46% at 82% 22%, rgba(255,20,147,.40), transparent 66%),
    radial-gradient(52% 40% at 62% 82%, rgba(255,0,0,.20), transparent 70%),
    radial-gradient(60% 50% at 12% 88%, rgba(255,20,147,.22), transparent 72%),
    linear-gradient(180deg,#150d0d 0%,#0f0909 100%);
  background-size:220% 220%;
  filter:saturate(1.25);
  animation:drift 12s ease-in-out infinite alternate;
}
@keyframes drift{
  0%{background-position:0% 0%}
  50%{background-position:60% 40%}
  100%{background-position:100% 100%}
}

/* 顶部细条 */
.ticker{
  margin:0;padding:.4rem clamp(.75rem,3vw,2rem);
  font-size:.76rem;letter-spacing:.16em;color:#ffd7e8;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  background:linear-gradient(90deg,rgba(255,0,0,.55),rgba(255,20,147,.55),rgba(255,0,0,.35));
}
.ticker span{opacity:.95}

/* 头部 */
.site-head{
  position:sticky;top:0;z-index:30;
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:.4rem;
  padding:.4rem clamp(.5rem,3vw,1.75rem);
  background:rgba(19,12,12,.82);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-head.is-stuck{box-shadow:0 14px 34px -22px #000}
.nav p{display:flex;flex-wrap:wrap;gap:.1rem;margin:0}
.nav a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:.5rem .55rem;border-radius:var(--r);
  font-size:.93rem;color:var(--dim);
  transition:color .2s ease,background .2s ease;
}
.nav a::after{
  content:'';position:absolute;left:.55rem;right:.55rem;bottom:.5rem;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--red),var(--pink));
  transform:scaleX(0);transform-origin:left;transition:transform .28s ease;
}
.nav a:hover,.nav a:focus-visible{color:#fff;background:rgba(255,20,147,.13)}
.nav a:hover::after,.nav a:focus-visible::after{transform:scaleX(1)}
.nav-left{justify-self:end}
.nav-right{justify-self:start}
.brand{
  justify-self:center;display:inline-flex;align-items:center;gap:.45rem;
  min-height:44px;padding:.4rem .8rem;border-radius:var(--r);
  font-family:var(--head);font-weight:700;font-size:1.1rem;letter-spacing:.12em;
  background:linear-gradient(94deg,var(--red),var(--pink) 55%,#ffc2de);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand img{width:30px;height:30px;border-radius:var(--r);object-fit:cover}
.brand span{white-space:nowrap}

/* 首屏 */
.hero{
  position:relative;display:flex;align-items:flex-end;
  min-height:100svh;padding:0 0 clamp(3.5rem,11vh,7rem);
  overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 100%,0 89%);
  background:
    radial-gradient(60% 60% at 22% 20%,rgba(255,0,0,.42),transparent 65%),
    radial-gradient(55% 55% at 78% 30%,rgba(255,20,147,.40),transparent 68%),
    linear-gradient(160deg,#1a0f10,#120a0a);
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.5;mix-blend-mode:screen;filter:saturate(1.25) contrast(1.05);
}
.hero-media img:nth-child(2){opacity:0;animation:crossfade 12s ease-in-out infinite}
.hero-media img:nth-child(3){opacity:0;animation:crossfade 12s ease-in-out infinite 6s}
@keyframes crossfade{
  0%,10%{opacity:0}
  25%,48%{opacity:.55}
  66%,100%{opacity:0}
}
.hero-inner{
  position:relative;z-index:2;width:min(1180px,100%);margin:0 auto;
  padding-inline:clamp(1rem,4vw,2rem);text-align:left;
}
.hero-title{
  margin:0;max-width:16ch;color:#fff;
  text-shadow:0 2px 26px rgba(255,20,147,.5),0 1px 2px rgba(0,0,0,.6);
}
.badge{
  position:absolute;z-index:3;top:16vh;right:clamp(1rem,6vw,5rem);margin:0;
  padding:.5rem .95rem;border-radius:999px;
  font-size:.8rem;letter-spacing:.18em;color:#fff;
  background:linear-gradient(100deg,rgba(255,0,0,.85),rgba(255,20,147,.85));
  box-shadow:0 12px 30px -14px rgba(255,20,147,.9);
  animation:floaty 9s ease-in-out infinite alternate;
}
@keyframes floaty{
  from{transform:translateY(-6px)}
  to{transform:translateY(8px)}
}

/* 主区 */
.shell{
  display:grid;grid-template-columns:218px minmax(0,1fr);
  gap:clamp(1.5rem,4vw,3.25rem);
  width:min(1180px,100%);margin:0 auto;
  padding:clamp(2rem,6vw,4.5rem) clamp(1rem,4vw,2rem) clamp(2.5rem,7vw,5rem);
  align-items:start;
}

/* 侧栏 */
.rail{
  position:sticky;top:5.25rem;
  border:1px solid var(--line);border-bottom:3px solid var(--red);
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,20,147,.12),rgba(255,0,0,.04));
  padding:.35rem;
}
.rail-title{
  margin:.35rem .5rem .6rem;font-size:.74rem;letter-spacing:.24em;
  color:#ffadd4;text-transform:uppercase;
}
.rail-list{list-style:none;counter-reset:rail;margin:0;padding:0}
.rail-list li{counter-increment:rail;animation:rise .5s ease both;animation-delay:calc(var(--i,0) * 55ms)}
@keyframes rise{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.rail-list a{
  display:flex;align-items:center;gap:.55rem;min-height:42px;
  padding:.35rem .5rem;border-radius:var(--r);
  font-size:.94rem;color:var(--dim);
  border-bottom:1px solid var(--soft);
  transition:color .2s ease,background .2s ease;
}
.rail-list li:last-child a{border-bottom:0}
.rail-list a::before{
  content:counter(rail,decimal-leading-zero);
  font-family:var(--head);font-size:.82rem;color:var(--pink);letter-spacing:.06em;
}
.rail-list a:hover,.rail-list a:focus-visible{color:#fff;background:rgba(255,20,147,.16)}

/* 正文 */
.post{max-width:70ch;min-width:0}
.lede{
  padding:1.1rem 1.2rem 1rem;margin-bottom:1.5rem;
  border:1px solid var(--line);border-bottom:3px solid var(--pink);
  border-radius:var(--r);
  background:linear-gradient(180deg,rgba(255,0,0,.10),rgba(255,20,147,.04));
}
.lede h2{margin-bottom:.45rem;font-size:1.35rem}
.subtitle{margin:0;font-size:.98rem;color:var(--dim);line-height:1.7}
.post div{scroll-margin-top:6.5rem;padding:2rem 0;border-top:1px solid var(--soft)}
.post div:first-child{border-top:0;padding-top:0}
.post div h2{position:relative;padding-left:.85rem}
.post div h2::before{
  content:'';position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--red),var(--pink));
}
.post a{color:#ff8cc4;text-decoration:underline;text-underline-offset:3px}
.post a:hover{color:#fff}
.post img{border-radius:var(--r);margin:1rem 0}
.post blockquote{
  margin:1.2rem 0;padding:.8rem 1rem;border-left:3px solid var(--pink);
  background:rgba(255,20,147,.08);border-radius:var(--r);color:#f3dfe7;
}
.post ul,.post ol{padding-left:1.25rem}
.post table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:.96rem}
.post th,.post td{border:1px solid var(--soft);padding:.5rem .65rem;text-align:left}
.post th{background:rgba(255,20,147,.14)}

/* 页脚 */
.foot{
  display:grid;grid-template-columns:1.1fr 1fr;gap:1rem 2.25rem;
  width:min(1180px,100%);margin:0 auto;
  padding:clamp(2rem,5vw,3.25rem) clamp(1rem,4vw,2rem) 2rem;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,20,147,0),rgba(255,20,147,.09));
}
.foot-brand{
  margin:0;font-family:var(--head);font-size:1.5rem;letter-spacing:.08em;
  background:linear-gradient(94deg,var(--red),var(--pink));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.foot-links{display:flex;flex-wrap:wrap;gap:0 .9rem;margin:0;font-size:.94rem}
.foot-links a{
  display:inline-flex;align-items:center;min-height:44px;color:var(--dim);
  border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease;
}
.foot-links a:hover,.foot-links a:focus-visible{color:#fff;border-bottom-color:var(--pink)}
.foot small{
  grid-column:1/-1;font-size:.82rem;color:var(--dim);
  padding-top:1rem;border-top:1px solid var(--soft);
}

@media (max-width:860px){
  .site-head{display:flex;flex-wrap:wrap;justify-content:center;row-gap:.2rem}
  .brand{order:-1;flex:1 0 100%;justify-content:center;font-size:1rem}
  .nav{order:0;flex:1 1 auto;display:flex;justify-content:center}
  .nav p{justify-content:center}
  .nav a{font-size:.88rem;padding:.45rem .45rem}
  .hero{clip-path:polygon(0 0,100% 0,100% 100%,0 94%);min-height:96svh}
  .badge{top:12vh;font-size:.72rem;padding:.4rem .75rem}
  .shell{grid-template-columns:minmax(0,1fr);gap:1.5rem}
  .rail{position:static}
  .rail-list{display:flex;gap:.35rem;overflow-x:auto;padding-bottom:.35rem}
  .rail-list li{flex:0 0 auto}
  .rail-list a{border-bottom:0;border:1px solid var(--soft);white-space:nowrap;min-height:40px}
  .foot{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:420px){
  .nav a{font-size:.84rem;padding:.4rem .35rem}
  .hero-title{max-width:20ch}
}

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

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