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

:root{
  --pink:#ff0080;
  --mag:#ff00ff;
  --violet:#7a2bff;
  --ink:#26171f;
  --ink0:#150c12;
  --paper:#f4ecf2;
  --dim:#c9a6bd;
  --r:10px;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:'IBM Plex Sans','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
}

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

html{
  background:var(--ink0);
  scroll-behavior:smooth;
  overflow-x:clip;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--sans);
  font-size:17px;
  line-height:1.78;
  color:var(--paper);
  background:var(--ink0);
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:'';
  position:fixed;
  inset:-25vmax;
  z-index:-2;
  pointer-events:none;
  background:
    radial-gradient(42% 38% at 16% 20%, rgba(255,0,128,.62), rgba(255,0,128,0) 72%),
    radial-gradient(38% 42% at 84% 16%, rgba(255,0,255,.48), rgba(255,0,255,0) 74%),
    radial-gradient(52% 48% at 62% 88%, rgba(122,43,255,.44), rgba(122,43,255,0) 72%),
    conic-gradient(from 214deg at 48% 52%, #180c14, #3c0f2c, #26171f, #12091a, #180c14);
  filter:saturate(118%) hue-rotate(0deg);
  animation:auroraFlow 24s ease-in-out infinite alternate, hueDrift 38s linear infinite;
}

body::after{
  content:'';
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:linear-gradient(180deg, rgba(21,12,18,.32), rgba(21,12,18,.78) 58%, #150c12 100%);
}

@keyframes auroraFlow{
  0%{transform:translate3d(-2%,-1%,0) scale(1.04)}
  50%{transform:translate3d(2%,2%,0) scale(1.12)}
  100%{transform:translate3d(-1%,3%,0) scale(1.07)}
}
@keyframes hueDrift{
  0%{filter:hue-rotate(0deg) saturate(118%)}
  50%{filter:hue-rotate(26deg) saturate(128%)}
  100%{filter:hue-rotate(-16deg) saturate(110%)}
}
@keyframes slide{
  0%{background-position:0 0}
  100%{background-position:220% 0}
}
@keyframes pulse{
  0%,100%{opacity:.55;transform:scale(.85)}
  50%{opacity:1;transform:scale(1.15)}
}
@keyframes bob{
  0%,100%{transform:translate3d(0,0,0)}
  50%{transform:translate3d(0,-4px,0)}
}
@keyframes spin{
  to{transform:rotate(1turn)}
}
@keyframes morph{
  0%,100%{border-radius:52% 48% 42% 58% / 46% 54% 44% 56%}
  50%{border-radius:42% 58% 56% 44% / 56% 44% 58% 42%}
}

img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0 0 14px}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.26;font-weight:700}
strong{color:#fff}

:focus-visible{outline:2px solid var(--mag);outline-offset:3px;border-radius:6px}

/* 顶部细条 */
.strip{
  position:relative;
  z-index:30;
  display:flex;
  align-items:center;
  gap:9px;
  padding:7px clamp(14px,3vw,26px);
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.14em;
  color:#ffeaf6;
  background:linear-gradient(90deg, rgba(255,0,128,.42), rgba(255,0,255,.3), rgba(255,0,128,.42));
  background-size:220% 100%;
  animation:slide 14s linear infinite;
  box-shadow:0 1px 0 rgba(255,255,255,.14);
}
.strip__dot{
  width:8px;height:8px;flex:none;border-radius:50%;
  background:#fff9fd;
  box-shadow:0 0 10px #ffb3dd;
  animation:pulse 2.6s ease-in-out infinite;
}
.strip__txt{
  min-width:0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
}

/* 图标页头 */
.top{
  position:relative;
  z-index:30;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px clamp(14px,3vw,26px) 4px;
}
.brand{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:44px;height:44px;
  border-radius:14px;
  background:conic-gradient(from 200deg, var(--pink), var(--mag), var(--violet), var(--pink));
  box-shadow:0 0 26px rgba(255,0,128,.5);
  transition:transform .3s ease, box-shadow .3s ease, filter .3s ease;
}
.brand:hover{transform:rotate(-6deg) scale(1.06);filter:hue-rotate(24deg);box-shadow:0 0 34px rgba(255,0,255,.6)}
.brand img{width:34px;height:34px;object-fit:contain;display:block}
.brand__mark{
  font-family:var(--mono);
  font-weight:700;
  font-size:19px;
  color:#1b0d15;
}

main{position:relative;z-index:10;display:block;padding-top:6px}

.wrap{
  max-width:1060px;
  margin:0 auto;
  padding:0 clamp(14px,3vw,26px);
}

/* 胶囊导航（aside） */
.rail{
  position:sticky;
  top:0;
  z-index:25;
  margin:0 0 16px;
  padding:8px 0 4px;
  background:linear-gradient(180deg, rgba(21,12,18,.94), rgba(21,12,18,.72));
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-radius:0 0 14px 14px;
}
.rail__title{
  margin:0 0 4px;
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.28em;
  color:var(--dim);
}
.rail__title span{color:#ffb3dd}
.rail__nav ul{
  display:flex;
  gap:8px;
  padding:4px 2px 6px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail__nav ul::-webkit-scrollbar{display:none}
.rail__nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:9px 17px;
  border-radius:999px;
  font-family:var(--mono);
  font-size:16px;
  letter-spacing:.01em;
  white-space:nowrap;
  color:#f1e0ea;
  background:rgba(255,255,255,.09);
  transition:background .25s ease, color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.rail__nav a:hover,
.rail__nav a.is-on{
  color:#1b0d15;
  font-weight:600;
  background:linear-gradient(100deg, var(--pink), var(--mag));
  box-shadow:0 8px 24px rgba(255,0,128,.38);
  transform:translateY(-1px);
}

.stage{display:block}
.doc{display:block;padding-bottom:4px}

/* 首屏 */
.hero{
  position:relative;
  isolation:isolate;
  display:grid;
  grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);
  gap:clamp(14px,3vw,30px);
  align-items:center;
  min-height:45vh;
  margin:0 0 22px;
  padding:clamp(14px,3vw,26px);
  border-radius:16px;
  overflow:hidden;
  background:linear-gradient(155deg, rgba(255,0,128,.24), rgba(255,0,255,.13) 48%, rgba(38,23,31,.78));
}
.hero::before{
  content:'';
  position:absolute;
  inset:-32%;
  z-index:-1;
  background:conic-gradient(from 60deg, var(--pink), var(--mag), var(--violet), var(--pink));
  filter:blur(46px) saturate(135%);
  opacity:.46;
  animation:spin 26s linear infinite;
}
.hero__media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r);
  aspect-ratio:4/3;
  background:#2b1220;
}
.hero__media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .9s ease}
.hero:hover .hero__media img{transform:scale(1.07)}
.hero__blob{
  position:absolute;
  inset:8%;
  display:block;
  background:
    radial-gradient(60% 60% at 30% 28%, rgba(255,255,255,.55), rgba(255,255,255,0) 70%),
    conic-gradient(from 30deg, var(--pink), var(--mag), var(--violet), var(--pink));
  filter:blur(2px) saturate(140%);
  animation:morph 14s ease-in-out infinite;
}
.hero__copy{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:12px;
  text-align:right;
}
.hero__badge{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  margin:0;
  padding:5px 15px;
  border-radius:999px;
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.06em;
  color:#1b0d15;
  background:linear-gradient(96deg, var(--pink), var(--mag));
  box-shadow:0 6px 22px rgba(255,0,128,.42);
  animation:bob 5.5s ease-in-out infinite;
}
.hero h1{
  font-size:clamp(26px,5vw,46px);
  letter-spacing:-.01em;
  color:#fff;
  text-shadow:0 0 34px rgba(255,0,128,.42);
}
.hero__desc{
  margin:0;
  max-width:46ch;
  color:#ecdae5;
}

.doc__label{
  margin:0 0 12px;
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.28em;
  color:var(--dim);
}
.doc__label span{color:#ffb3dd}

/* 正文区块 */
.doc div{
  margin:0 0 18px;
  padding:clamp(16px,3vw,26px);
  border-radius:var(--r);
  background:rgba(38,23,31,.7);
  scroll-margin-top:120px;
}
.doc div:nth-of-type(even){background:rgba(58,20,44,.62)}
.doc div:target{box-shadow:0 0 0 2px rgba(255,0,255,.55), 0 18px 40px rgba(0,0,0,.32)}
.doc div > :last-child{margin-bottom:0}

.doc h2{
  margin:0 0 14px;
  font-size:clamp(21px,3.2vw,30px);
  letter-spacing:.005em;
  color:#fff;
}
.doc h2 > span{
  background:linear-gradient(94deg, var(--pink), var(--mag) 68%, #c79bff);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
.doc h3{
  margin:20px 0 8px;
  font-family:var(--mono);
  font-size:18px;
  color:#ffd9ea;
}
.doc h3 > span{color:#ff9ad2}
.doc h4{margin:16px 0 6px;font-size:17px;color:#ffd9ea}

.doc p{color:#e8dae4;max-width:70ch}

.doc a{color:#ff6ab8;text-decoration:underline;text-underline-offset:3px}
.doc a:hover{color:#ffb3dd}

.doc ul{padding-left:20px}
.doc ul li{position:relative;margin:8px 0 8px 0;padding-left:16px;color:#e8dae4}
.doc ul li::before{
  content:'';
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  border-radius:50%;
  background:linear-gradient(140deg, var(--pink), var(--mag));
}
.doc ol{padding-left:22px;list-style:decimal}
.doc ol li{margin:8px 0;color:#e8dae4}
.doc ol li::marker{color:#ff6ab8;font-family:var(--mono);font-weight:600}

.doc blockquote{
  margin:16px 0;
  padding:12px 16px;
  border-radius:var(--r);
  background:rgba(255,0,255,.12);
  color:#f6e7f0;
}
.doc blockquote p:last-child{margin-bottom:0}

.doc table{
  width:100%;
  margin:0 0 16px;
  border-collapse:collapse;
  font-size:16px;
}
.doc th,.doc td{
  padding:9px 12px;
  text-align:left;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.doc th{font-family:var(--mono);font-size:15px;color:#ffb3dd}

.doc code{
  font-family:var(--mono);
  font-size:15px;
  padding:2px 6px;
  border-radius:6px;
  background:rgba(255,255,255,.12);
}
.doc pre{
  overflow-x:auto;
  padding:14px;
  border-radius:var(--r);
  background:rgba(0,0,0,.38);
  font-family:var(--mono);
  font-size:15px;
  line-height:1.6;
}

.doc figure{margin:0 0 16px}
.doc figcaption{
  margin-top:8px;
  font-family:var(--mono);
  font-size:14px;
  color:var(--dim);
}

.doc__top{margin:18px 0 0;text-align:right}
.doc__top a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 18px;
  border-radius:999px;
  font-family:var(--mono);
  font-size:15px;
  color:#f1e0ea;
  background:rgba(255,255,255,.1);
  transition:background .25s ease, color .25s ease;
}
.doc__top a:hover{background:linear-gradient(100deg, var(--pink), var(--mag));color:#1b0d15}

/* 页脚 */
.foot{
  position:relative;
  z-index:10;
  max-width:1060px;
  margin:20px auto 0;
  padding:26px clamp(14px,3vw,26px) 46px;
  font-size:16px;
}
.foot__cta{margin:0 0 18px}
.foot__cta a{
  display:inline-block;
  padding:4px 0;
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(21px,4vw,32px);
  line-height:1.3;
  background:linear-gradient(96deg, var(--pink), var(--mag) 55%, #ff9ad2);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}
.foot__grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:6px 14px;
  margin:0 0 16px;
}
.foot__grid span{display:flex;flex-direction:column}
.foot__grid a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-family:var(--mono);
  font-size:15px;
  color:#ddc8d7;
  transition:color .2s ease, transform .2s ease;
}
.foot__grid a:hover{color:#ff5cb4;transform:translateX(2px)}
.foot__copy{
  display:block;
  padding-top:12px;
  font-size:14px;
  color:#a98ea0;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}

/* 渐显（仅在 JS 可用时启用） */
.js .hero,
.js .doc div{opacity:0;transform:translateY(16px)}
.js .hero.is-in,
.js .doc div.is-in{
  opacity:1;
  transform:none;
  transition:opacity .6s ease, transform .6s ease;
}

@media (max-width:760px){
  body{font-size:17px;line-height:1.75}
  .hero{
    grid-template-columns:1fr;
    min-height:0;
    padding:15px;
    gap:14px;
  }
  .hero__media{aspect-ratio:auto;height:150px}
  .hero__copy{align-items:flex-start;text-align:left;gap:10px}
  .hero__desc{max-width:none}
  .hero h1{font-size:clamp(25px,7.4vw,32px)}
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .doc div{padding:16px}
  .doc h2{font-size:22px}
  .doc table{font-size:15px}
  .doc th,.doc td{padding:8px 9px}
}

@media (max-width:420px){
  .strip{font-size:12px;letter-spacing:.1em}
  .rail__nav a{padding:9px 14px;font-size:16px}
  .doc__top{text-align:left}
}

@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}