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

:root{
  --ink:#1a1a2e;
  --ink-deep:#100e1d;
  --red:#ff0000;
  --pink:#ff006e;
  --glow-red:rgba(255,0,0,.55);
  --glow-pink:rgba(255,0,110,.55);
  --text:#f2ecff;
  --muted:#b8aed4;
  --line:rgba(255,0,110,.22);
  --glass:rgba(255,255,255,.045);
  --sans:'Outfit','Work Sans',system-ui,-apple-system,'Segoe UI','Noto Sans SC','Microsoft YaHei',sans-serif;
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  background:
    radial-gradient(1200px 720px at 82% -12%, rgba(255,0,110,.20), transparent 62%),
    radial-gradient(900px 640px at 6% 108%, rgba(255,0,0,.16), transparent 62%),
    var(--ink-deep);
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.7;
  font-weight:400;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:190;
  background:radial-gradient(125% 100% at 50% 50%, transparent 54%, rgba(8,6,18,.78));
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:200;
  opacity:.72;
  mix-blend-mode:overlay;
  background:repeating-linear-gradient(180deg, rgba(255,255,255,.06) 0 1px, transparent 1px 3px);
}

a{color:#ff9dc4;}
a:focus-visible{outline:2px solid #fff;outline-offset:3px;border-radius:4px;}
img{max-width:100%;height:auto;}

::selection{background:var(--pink);color:#fff;}

/* 左侧竖排导航 */
.rail{
  position:fixed;
  left:0;
  top:0;
  bottom:0;
  width:150px;
  z-index:60;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:2px;
  padding:22px 12px 26px;
  overflow-y:auto;
  border-right:1px solid var(--line);
  background:linear-gradient(180deg, rgba(26,26,46,.94), rgba(16,14,29,.94));
  backdrop-filter:blur(10px);
}

.rail-brand{
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  margin:0 0 20px 2px;
  border-radius:10px;
  border:1px solid rgba(255,0,110,.5);
  background:linear-gradient(135deg, rgba(255,0,0,.42), rgba(255,0,110,.26));
  box-shadow:0 0 20px var(--glow-pink), inset 0 1px 0 rgba(255,255,255,.22);
  text-decoration:none;
  flex:0 0 auto;
}

.brand-glyph{
  font-size:1.25rem;
  font-weight:700;
  color:#fff;
  letter-spacing:-.02em;
  text-shadow:0 0 10px var(--glow-pink);
}

.brand-img{width:26px;height:26px;display:block;}

.rail-link{
  display:block;
  width:100%;
  padding:11px 9px;
  min-height:44px;
  font-size:16px;
  line-height:1.35;
  color:var(--muted);
  text-decoration:none;
  border-left:2px solid transparent;
  border-radius:0 6px 6px 0;
  transition:color .18s ease, border-color .18s ease, background .18s ease, text-shadow .18s ease;
  animation:fadeUp .5s backwards;
}

.rail-link:hover,
.rail-link[aria-current]{
  color:#fff;
  border-left-color:var(--pink);
  background:rgba(255,0,110,.09);
  text-shadow:0 0 12px var(--glow-pink);
}

/* 右侧主按钮 */
.cta{
  position:fixed;
  right:clamp(14px,2.4vw,36px);
  bottom:clamp(16px,3vh,32px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:12px 24px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.06em;
  color:#fff;
  text-decoration:none;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.4);
  background:linear-gradient(135deg, var(--red), var(--pink));
  box-shadow:0 0 24px var(--glow-pink), 0 12px 28px -14px #000;
  transition:transform .18s ease, box-shadow .18s ease;
}

.cta:hover{
  transform:translateY(-2px);
  box-shadow:0 0 36px var(--glow-pink), 0 0 12px rgba(255,255,255,.65);
}

/* 主区 */
.stage{
  margin-left:150px;
  padding:0 clamp(18px,4vw,58px);
}

.dossier{
  max-width:1060px;
  margin:0 auto;
}

.hero{
  position:relative;
  overflow:hidden;
  min-height:70vh;
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding:clamp(90px,14vh,150px) 0 clamp(38px,7vh,76px);
  border-bottom:1px solid var(--line);
}

.hero::before{
  content:"01";
  position:absolute;
  right:-3%;
  top:4%;
  z-index:0;
  font-size:clamp(9rem,26vw,21rem);
  line-height:.78;
  font-weight:700;
  letter-spacing:-.05em;
  color:transparent;
  -webkit-text-stroke:2px rgba(255,0,110,.22);
  user-select:none;
}

.hero::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:38%;
  height:1px;
  background:linear-gradient(90deg, var(--red), rgba(255,0,110,.35), transparent);
}

.hero-title{
  position:relative;
  z-index:1;
  margin:0;
  max-width:16em;
  text-align:right;
  font-size:clamp(1.9rem,6vw,4.6rem);
  line-height:1.06;
  font-weight:700;
  letter-spacing:-.018em;
  color:#fff;
  text-shadow:
    0 0 18px var(--glow-pink),
    0 0 52px rgba(255,0,110,.32),
    3px 0 0 rgba(255,0,0,.45),
    -3px 0 0 rgba(0,255,255,.22);
  animation:glitch 7s steps(1) infinite;
}

/* 正文网格：aside 在左 */
.split{
  display:grid;
  grid-template-columns:228px minmax(0,1fr);
  gap:clamp(20px,3vw,46px);
  padding:clamp(28px,5vh,54px) 0 clamp(52px,9vh,92px);
}

.side{
  position:sticky;
  top:26px;
  align-self:start;
}

.side-h{
  margin:0 0 .45rem;
  font-size:1.18rem;
  font-weight:600;
  letter-spacing:.16em;
  color:#fff;
  text-shadow:0 0 14px var(--glow-pink);
}

.side .subtitle{
  margin:0 0 1.5rem;
  font-size:.92rem;
  line-height:1.68;
  color:var(--muted);
}

.side-links{
  display:flex;
  flex-direction:column;
  gap:1px;
  padding-top:12px;
  border-top:1px solid var(--line);
}

.side-link{
  display:flex;
  gap:10px;
  align-items:baseline;
  padding:9px 6px;
  min-height:40px;
  font-size:.95rem;
  color:var(--muted);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color .18s ease, border-color .18s ease, padding-left .18s ease;
  animation:fadeUp .55s backwards;
}

.side-link:hover{
  color:#fff;
  border-left-color:var(--red);
  padding-left:12px;
}

.side-num{
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--pink);
  opacity:.85;
}

.side-link:nth-child(1){animation-delay:0s;}
.side-link:nth-child(2){animation-delay:.05s;}
.side-link:nth-child(3){animation-delay:.1s;}
.side-link:nth-child(4){animation-delay:.15s;}
.side-link:nth-child(5){animation-delay:.2s;}
.side-link:nth-child(6){animation-delay:.25s;}
.side-link:nth-child(7){animation-delay:.3s;}

/* 正文卡片 */
.content{min-width:0;}

.content article{
  position:relative;
  margin:0 0 clamp(20px,3vw,32px);
  padding:clamp(20px,3vw,34px);
  border:1px solid var(--line);
  border-radius:10px;
  background:var(--glass);
  backdrop-filter:blur(9px);
  box-shadow:0 26px 52px -36px var(--glow-pink), inset 0 1px 0 rgba(255,255,255,.08);
  scroll-margin-top:26px;
}

.content article::before{
  content:"";
  position:absolute;
  left:0;
  top:18px;
  bottom:18px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, var(--red), var(--pink), transparent);
  opacity:.75;
}

.content article:last-child{margin-bottom:0;}

.content h2{
  margin:0 0 .7rem;
  font-size:clamp(1.34rem,2.6vw,1.85rem);
  line-height:1.28;
  font-weight:600;
  letter-spacing:-.01em;
  color:#fff;
  text-shadow:0 0 16px rgba(255,0,110,.45);
}

.content h3{
  margin:1.7rem 0 .5rem;
  font-size:1.1rem;
  line-height:1.4;
  color:#ffd9e7;
}

.content p{margin:0 0 1rem;color:#e3daf6;}
.content p:last-child{margin-bottom:0;}
.content strong{color:#fff;}
.content ul,.content ol{margin:0 0 1rem;padding-left:1.25em;color:#e3daf6;}
.content li{margin:.36rem 0;}
.content blockquote{
  margin:1rem 0;
  padding:.4rem 0 .4rem 1rem;
  border-left:2px solid var(--pink);
  color:#ffd9e7;
}
.content time{
  display:inline-block;
  font-size:.86rem;
  letter-spacing:.06em;
  color:var(--pink);
}
.content a{
  color:#ff9dc4;
  text-decoration:none;
  border-bottom:1px solid rgba(255,0,110,.55);
}
.content a:hover{color:#fff;border-bottom-color:#fff;}
.content img{border-radius:8px;border:1px solid var(--line);}

/* 页脚 */
.site-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  gap:clamp(22px,4vw,58px);
  margin-left:150px;
  padding:clamp(32px,6vh,62px) clamp(18px,4vw,58px) 36px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(26,26,46,.42), rgba(10,9,18,.9));
}

.foot-brand{
  flex:1 1 210px;
  min-width:0;
}

.foot-word{
  margin:0;
  font-size:clamp(2.6rem,7vw,4.6rem);
  line-height:.95;
  font-weight:700;
  letter-spacing:-.035em;
  color:transparent;
  -webkit-text-stroke:1.5px rgba(255,0,110,.78);
  text-shadow:0 0 30px rgba(255,0,110,.35);
}

.foot-nav{flex:1 1 260px;}

.foot-links{
  margin:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 24px;
}

.foot-links dt{
  grid-column:1 / -1;
  margin-bottom:8px;
  font-size:.74rem;
  letter-spacing:.26em;
  color:var(--pink);
}

.foot-links dd{margin:0;}

.foot-links a{
  display:block;
  padding:9px 0;
  min-height:40px;
  font-size:.95rem;
  color:var(--muted);
  text-decoration:none;
  transition:color .18s ease, text-shadow .18s ease;
}

.foot-links a:hover{color:#fff;text-shadow:0 0 12px var(--glow-pink);}

.foot-legal{
  flex:0 1 200px;
  padding-top:6px;
  text-align:center;
  font-size:.85rem;
  line-height:1.8;
  color:var(--muted);
}

.foot-legal p{margin:0;}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(14px);}
  to{opacity:1;transform:none;}
}

@keyframes glitch{
  0%,91%,100%{transform:none;}
  92%{transform:translate(-3px,1px) skewX(-2deg);}
  94%{transform:translate(3px,-1px) skewX(2deg);}
  96%{transform:translate(-2px,0) skewX(-1deg);}
}

@media (max-width:1100px){
  .split{grid-template-columns:200px minmax(0,1fr);}
  .rail{width:136px;}
  .stage,.site-foot{margin-left:136px;}
}

@media (max-width:860px){
  .rail{
    top:auto;
    bottom:0;
    left:0;
    right:0;
    width:auto;
    flex-direction:row;
    align-items:center;
    gap:0;
    padding:6px 8px;
    overflow-x:auto;
    overflow-y:hidden;
    border-right:0;
    border-top:1px solid var(--line);
    scrollbar-width:none;
  }

  .rail::-webkit-scrollbar{display:none;}

  .rail-brand{
    position:sticky;
    left:0;
    z-index:2;
    margin:0 8px 0 0;
    background:#15132a;
    box-shadow:10px 0 16px -6px #15132a;
  }

  .rail-link{
    width:auto;
    flex:0 0 auto;
    white-space:nowrap;
    display:inline-flex;
    align-items:center;
    min-height:46px;
    padding:12px 13px;
    border-left:0;
    border-bottom:2px solid transparent;
    border-radius:6px 6px 0 0;
  }

  .rail-link:hover,
  .rail-link[aria-current]{
    border-left-color:transparent;
    border-bottom-color:var(--pink);
  }

  .stage,.site-foot{margin-left:0;}

  .hero{min-height:62vh;padding-top:64px;}

  .split{
    grid-template-columns:1fr;
    gap:26px;
    padding-bottom:96px;
  }

  .side{position:static;}

  .side-links{
    flex-direction:row;
    flex-wrap:wrap;
    gap:6px 14px;
    border-top:1px solid var(--line);
  }

  .side-link{border-left:0;padding:8px 2px;}

  .cta{bottom:72px;right:14px;}

  .site-foot{padding-bottom:92px;}
}

@media (max-width:520px){
  .foot-links{grid-template-columns:1fr;}
  .foot-legal{flex:1 1 100%;text-align:left;padding-top:0;}
  .hero-title{max-width:none;}
  .hero::before{right:-6%;top:8%;}
}

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

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