:root{
  --red:#ff0000;
  --pink:#ff1493;
  --ink:#261717;
  --card:#322020;
  --card-2:#3b2626;
  --text:#fbe9ec;
  --muted:#e7c7ce;
  --line:rgba(255,20,147,.24);
  --radius:10px;
  --max:1180px;
}

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

html{
  scroll-behavior:smooth;
  background:#1b0f0f;
  -webkit-text-size-adjust:100%;
  overflow-x:clip;
}

body{
  margin:0;
  max-width:100%;
  font-family:'Noto Naskh Arabic','Noto Sans Arabic',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.7;
  color:var(--text);
  overflow-x:clip;
  background:
    radial-gradient(62% 44% at 10% 4%, rgba(255,20,147,.40), transparent 62%),
    radial-gradient(56% 40% at 92% 0%, rgba(255,0,0,.34), transparent 60%),
    radial-gradient(72% 56% at 74% 88%, rgba(255,20,147,.22), transparent 66%),
    radial-gradient(80% 60% at 6% 92%, rgba(255,0,0,.16), transparent 68%),
    var(--ink);
}

body::before{
  content:"";
  position:fixed;
  inset:-25%;
  z-index:0;
  pointer-events:none;
  background:conic-gradient(from 30deg at 50% 50%,
    rgba(255,0,0,.34),
    rgba(255,20,147,.30),
    rgba(255,132,88,.20),
    rgba(255,20,147,.28),
    rgba(255,0,0,.34));
  filter:blur(80px) saturate(1.25);
  mix-blend-mode:screen;
  opacity:.55;
  animation:aurora 11s ease-in-out infinite alternate;
}

@keyframes aurora{
  0%{transform:translate3d(0,0,0) scale(1) rotate(0deg)}
  50%{transform:translate3d(-3%,2%,0) scale(1.14) rotate(9deg)}
  100%{transform:translate3d(3%,-2%,0) scale(1.06) rotate(-7deg)}
}

.site-head,.hero,.stage,.site-foot{position:relative;z-index:1}

img{max-width:100%}

a{color:#ff9dc0}
a:hover{color:#fff}

:focus-visible{outline:2px solid #ffd166;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;
}

[id]{scroll-margin-top:150px}

/* 顶栏：品牌一行、菜单一行 */
.site-head{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(30,18,18,.86);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}

.brand-row{
  max-width:var(--max);
  margin:0 auto;
  padding:10px 20px 2px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-width:0;
}

.brand{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  font-size:1.42rem;
  font-weight:700;
  letter-spacing:.16em;
  text-decoration:none;
  background:linear-gradient(96deg,var(--red),var(--pink) 72%,#ffb3cc);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  flex:0 1 auto;
  min-width:0;
}

.brand:hover{filter:saturate(1.4) brightness(1.15)}

.search{
  display:flex;
  gap:6px;
  flex:0 1 240px;
  min-width:0;
}

.search input{
  flex:1 1 auto;
  width:100%;
  min-width:0;
  height:42px;
  padding:0 14px;
  border:0;
  border-radius:999px;
  background:rgba(255,255,255,.09);
  color:#fff;
  font:inherit;
  font-size:.95rem;
}

.search input::placeholder{color:#e8c3cd}

.search button{
  flex:0 0 auto;
  height:42px;
  padding:0 16px;
  border:0;
  border-radius:999px;
  background:linear-gradient(96deg,var(--red),var(--pink));
  color:#fff;
  font:inherit;
  font-size:.95rem;
  cursor:pointer;
}

.search button:hover{filter:brightness(1.12)}

.site-nav{
  max-width:var(--max);
  margin:0 auto;
  padding:0 12px;
}

.site-nav ol{
  list-style:none;
  margin:0;
  padding:0 0 8px;
  display:flex;
  flex-wrap:wrap;
  gap:2px;
}

.site-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 12px;
  border-radius:var(--radius);
  color:#ffd9e4;
  text-decoration:none;
  font-size:.97rem;
  white-space:nowrap;
  transition:background .25s ease,color .25s ease;
}

.site-nav a:hover{background:rgba(255,20,147,.2);color:#fff}

/* 首屏：左文右图，紧凑 */
.hero{
  max-width:var(--max);
  margin:0 auto;
  padding:22px 20px 26px;
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:26px;
  align-items:center;
  min-height:45vh;
}

.hero::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:44%;
  height:120px;
  z-index:-1;
  transform:rotate(-6deg) skewX(-9deg);
  background:linear-gradient(96deg,rgba(255,0,0,0),rgba(255,20,147,.5) 46%,rgba(255,0,0,.28) 82%,rgba(255,20,147,0));
  filter:blur(3px);
}

.hero-copy{min-width:0}

.hero-copy h1{
  margin:0;
  font-size:clamp(2rem,5.4vw,3.3rem);
  line-height:1.16;
  letter-spacing:.01em;
  color:#fff;
  text-shadow:0 6px 34px rgba(255,20,147,.42);
  overflow-wrap:break-word;
}

.hero-desc{
  margin:14px 0 0;
  max-width:44ch;
  color:var(--muted);
  font-size:1.02rem;
}

.hero-fig{
  margin:0;
  border-radius:18px;
  overflow:hidden;
  aspect-ratio:4/3;
  background:linear-gradient(140deg,rgba(255,0,0,.42),rgba(255,20,147,.34));
  box-shadow:0 22px 60px rgba(0,0,0,.38);
  min-width:0;
}

.hero-img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .7s cubic-bezier(.2,.7,.2,1);
}

.hero-fig:hover .hero-img{transform:scale(1.04)}

/* 主体：左侧目录栏 + 右侧正文 */
.stage{
  max-width:var(--max);
  margin:0 auto;
  padding:8px 20px 64px;
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:26px;
  align-items:start;
}

.rail{
  position:sticky;
  top:132px;
  padding:16px 14px;
  border-radius:var(--radius);
  background:var(--card-2);
  min-width:0;
}

.rail small{
  display:block;
  margin-bottom:4px;
  font-size:.78rem;
  letter-spacing:.34em;
  color:#ff9dc0;
}

.rail h2{
  margin:0 0 10px;
  font-size:1.08rem;
  line-height:1.4;
  color:#fff;
}

.rail ul{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
}

.rail a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:6px 9px;
  border-radius:8px;
  color:#ffd9e4;
  text-decoration:none;
  font-size:.94rem;
  line-height:1.4;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}

.rail a:hover{background:rgba(255,20,147,.22);color:#fff;transform:translateX(3px)}

.content{min-width:0;max-width:100%;overflow-wrap:break-word;word-break:break-word}

.content>div{
  background:var(--card);
  border-radius:var(--radius);
  padding:22px 24px;
  margin-bottom:18px;
}

.content h2{
  margin:0 0 .55em;
  font-size:1.46rem;
  line-height:1.4;
  color:#fff;
}

.content small{
  display:block;
  margin-bottom:4px;
  font-size:.78rem;
  letter-spacing:.32em;
  color:#ff9dc0;
}

.content small+h2{margin-top:0}

.content h3{
  margin:1.2em 0 .4em;
  font-size:1.12rem;
  color:#ffd9e4;
}

.content p{margin:0 0 1em}
.content li{margin:.3em 0}
.content ul,.content ol{padding-left:1.25em}

.content figure{margin:1em 0}
.content img{max-width:100%;height:auto;border-radius:var(--radius);display:block}
.content blockquote{
  margin:1em 0;
  padding:10px 16px;
  border-left:3px solid var(--pink);
  background:rgba(255,20,147,.1);
  border-radius:0 var(--radius) var(--radius) 0;
}
.content code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;
  background:rgba(255,255,255,.09);
  padding:1px 5px;
  border-radius:5px;
}
.content table{width:100%;border-collapse:collapse;font-size:.96rem}
.content th,.content td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--line)}

/* 页脚：四栏 + 超大品牌字 */
.site-foot{
  margin-top:24px;
  padding:44px 20px 22px;
  background:#1b0f0f;
  border-top:1px solid var(--line);
}

.foot-grid{
  max-width:var(--max);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:22px;
  min-width:0;
}

.foot-word{
  margin:0;
  font-size:clamp(2.1rem,7vw,3.6rem);
  font-weight:700;
  line-height:1;
  letter-spacing:.06em;
  background:linear-gradient(120deg,var(--red),var(--pink) 68%,#ffb3cc);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.foot-address{
  font-style:normal;
  color:var(--muted);
  font-size:.96rem;
  line-height:1.8;
}

.foot-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
  align-content:start;
  min-width:0;
}

.foot-list a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--muted);
  text-decoration:none;
  font-size:.94rem;
  transition:color .22s ease;
}

.foot-list a:hover{color:#fff}

.foot-base{
  max-width:var(--max);
  margin:30px auto 0;
  padding-top:14px;
  border-top:1px solid rgba(255,20,147,.16);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:.9rem;
  color:#e3c3c9;
}

.foot-base p{margin:0}

.foot-base ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:16px;
}

.foot-base a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--muted);
  text-decoration:none;
}

.foot-base a:hover{color:#fff}

/* 滚动揭幕 */
.rev{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .72s ease,transform .72s cubic-bezier(.2,.72,.2,1);
}

.rev.in{opacity:1;transform:none}

@media (max-width:900px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:18px}
  .foot-word{grid-column:1 / -1}
}

@media (max-width:760px){
  body{font-size:16px}
  [id]{scroll-margin-top:132px}

  .brand-row{padding:8px 14px 0;gap:10px}
  .brand{font-size:1.2rem;letter-spacing:.08em}
  .search{flex:0 1 150px}
  .search input{height:44px;padding:0 12px;font-size:.92rem}
  .search button{height:44px;padding:0 12px;font-size:.92rem}

  .site-nav{padding:0 8px}
  .site-nav ol{
    flex-wrap:nowrap;
    overflow-x:auto;
    padding-bottom:6px;
    scrollbar-width:thin;
  }
  .site-nav a{padding:0 10px;font-size:.94rem}

  .hero{
    grid-template-columns:1fr;
    gap:16px;
    min-height:0;
    padding:18px 16px 22px;
  }
  .hero::before{top:52%;height:90px;left:0;right:0}
  .hero-desc{font-size:.98rem;margin-top:10px}
  .hero-fig{aspect-ratio:16/10;border-radius:14px}

  .stage{
    grid-template-columns:1fr;
    gap:16px;
    padding:6px 16px 48px;
  }

  .rail{position:static;padding:14px 12px}
  .rail ul{grid-template-columns:1fr 1fr;gap:4px}

  .content>div{padding:18px 16px;margin-bottom:14px}
  .content h2{font-size:1.3rem}

  .site-foot{padding:32px 16px 18px}
  .foot-base{margin-top:24px}
}

@media (max-width:420px){
  .brand-row{flex-wrap:wrap}
  .search{flex:1 1 100%}
  .foot-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before{animation:none}
  .rev{opacity:1;transform:none;transition:none}
  .hero-img,.rail a{transition:none}
}

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