@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,400;0,600;0,700;0,800;1,400&display=swap');

:root{
  --pink:#ff0080;
  --magenta:#ff00ff;
  --ink:#26171f;
  --bg:#0d060b;
  --bg-soft:#160b12;
  --text:#f9eef5;
  --muted:#cdb4c4;
  --glass:rgba(255,255,255,.055);
  --glass-2:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.14);
  --r:28px;
  --max:1180px;
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  background:var(--bg);
}

body{
  margin:0;
  font-family:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit}

/* ---------- aurora backdrop ---------- */
.aurora{
  position:fixed;
  inset:-25vmax;
  z-index:0;
  pointer-events:none;
  filter:blur(80px) saturate(140%);
  opacity:.8;
  will-change:transform;
}
.aurora span{
  position:absolute;
  display:block;
  border-radius:50%;
  mix-blend-mode:screen;
}
.aurora span:nth-child(1){
  width:58vmax;height:58vmax;left:-8vmax;top:-10vmax;
  background:radial-gradient(circle at 35% 35%,rgba(255,0,128,.85),rgba(255,0,128,0) 68%);
  animation:flow1 28s ease-in-out infinite;
}
.aurora span:nth-child(2){
  width:52vmax;height:52vmax;right:-6vmax;top:8vmax;
  background:radial-gradient(circle at 50% 50%,rgba(255,0,255,.7),rgba(255,0,255,0) 70%);
  animation:flow2 34s ease-in-out infinite;
}
.aurora span:nth-child(3){
  width:46vmax;height:46vmax;left:22vmax;bottom:-12vmax;
  background:radial-gradient(circle at 50% 50%,rgba(120,0,255,.62),rgba(120,0,255,0) 72%);
  animation:flow3 30s ease-in-out infinite;
}
.aurora span:nth-child(4){
  width:38vmax;height:38vmax;right:18vmax;bottom:-8vmax;
  background:radial-gradient(circle at 50% 50%,rgba(0,214,255,.4),rgba(0,214,255,0) 72%);
  animation:flow2 24s ease-in-out infinite reverse;
}

@keyframes flow1{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(9vmax,11vmax,0) scale(1.16)}
}
@keyframes flow2{
  0%,100%{transform:translate3d(0,0,0) scale(1.05)}
  50%{transform:translate3d(-10vmax,7vmax,0) scale(.9)}
}
@keyframes flow3{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(6vmax,-9vmax,0) scale(1.2)}
}

/* ---------- top bar ---------- */
.topbar{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(13,6,11,.74);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.bar-inner{
  max-width:var(--max);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 18px;
  min-height:74px;
}
.nav-l,.nav-r{flex:1 1 0;min-width:0}
.nav-l ul,.nav-r ul{
  display:flex;
  align-items:center;
  gap:4px;
  list-style:none;
  margin:0;
  padding:0;
}
.nav-r ul{justify-content:flex-end}
.nav-l a,.nav-r a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:0 13px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  border:1px solid transparent;
  transition:color .22s ease,background .22s ease,border-color .22s ease,transform .22s ease;
}
.nav-l a:hover,.nav-r a:hover,.nav-l a:focus-visible,.nav-r a:focus-visible{
  color:#fff;
  background:var(--glass-2);
  border-color:var(--line);
  transform:translateY(-1px);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  padding:0 6px;
  min-height:44px;
  text-decoration:none;
  font-weight:800;
  font-size:19px;
  letter-spacing:-.02em;
  background:linear-gradient(96deg,#fff,#ffb6dc 40%,var(--magenta));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.brand-dot{
  width:11px;height:11px;border-radius:50%;
  background:conic-gradient(from 0deg,var(--pink),var(--magenta),#7a3bff,var(--pink));
  box-shadow:0 0 0 1px rgba(255,255,255,.35),0 0 14px rgba(255,0,160,.8);
  animation:spin 9s linear infinite;
}
.brand-mark{font-size:18px;color:#ffb6dc;-webkit-text-fill-color:#ffb6dc}
@keyframes spin{to{transform:rotate(360deg)}}

.cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 20px;
  margin-left:6px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  color:#20040f;
  text-decoration:none;
  background:linear-gradient(120deg,var(--pink),var(--magenta) 55%,#ff5fb0);
  box-shadow:0 8px 26px rgba(255,0,140,.35);
  transition:transform .2s ease,box-shadow .2s ease;
}
.cta:hover,.cta:focus-visible{transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,0,180,.5)}

/* ---------- sticky anchor strip ---------- */
.subbar{
  position:sticky;
  top:74px;
  z-index:55;
  background:rgba(13,6,11,.8);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.subbar nav{max-width:var(--max);margin:0 auto;padding:0 12px}
.subbar ul{
  display:flex;
  gap:6px;
  list-style:none;
  margin:0;
  padding:9px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
.subbar ul::-webkit-scrollbar{display:none}
.subbar a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.subbar a:hover,.subbar a:focus-visible{color:#fff;background:rgba(255,0,140,.22);border-color:rgba(255,0,160,.6)}

/* ---------- page shell ---------- */
.page-grid{
  position:relative;
  z-index:1;
  max-width:var(--max);
  margin:0 auto;
  padding:22px 20px 44px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 288px;
  gap:28px;
  align-items:start;
}

/* ---------- hero ---------- */
.hero{
  grid-column:1 / -1;
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:24px;
  align-items:center;
  min-height:45vh;
  padding:22px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.1),rgba(255,255,255,.03) 55%,rgba(255,0,160,.08));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.42);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.2) 1px,transparent 1px);
  background-size:18px 18px;
  mask-image:radial-gradient(circle at 30% 30%,#000 5%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 30%,#000 5%,transparent 78%);
  opacity:.6;
  pointer-events:none;
}
.hero-art{
  position:relative;
  margin:0;
  aspect-ratio:5 / 4;
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.2);
  background:#1a0c14;
  isolation:isolate;
}
.hero-mesh{
  position:absolute;
  inset:-30%;
  background:
    conic-gradient(from 40deg at 35% 35%,rgba(255,0,128,.9),rgba(255,0,255,.75),rgba(90,0,255,.7),rgba(0,200,255,.5),rgba(255,0,128,.9));
  filter:blur(28px) hue-rotate(0deg);
  animation:morph 18s ease-in-out infinite;
  z-index:0;
}
@keyframes morph{
  0%,100%{transform:rotate(0deg) scale(1);filter:blur(28px) hue-rotate(0deg)}
  50%{transform:rotate(18deg) scale(1.18);filter:blur(38px) hue-rotate(38deg)}
}
.hero-img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  mix-blend-mode:normal;
}
.hero-copy{
  position:relative;
  z-index:1;
  text-align:center;
  padding:6px 10px;
}
.hero-copy h1{
  margin:0 0 12px;
  font-size:clamp(1.9rem,4.4vw,3rem);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.025em;
  background:linear-gradient(100deg,#fff 10%,#ffc2e2 48%,var(--magenta));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lede{
  margin:0 auto 18px;
  max-width:34em;
  font-size:16.5px;
  color:var(--muted);
}
.hero-cta{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:0 26px;
  border-radius:999px;
  font-weight:700;
  font-size:16px;
  color:#22040f;
  text-decoration:none;
  background:linear-gradient(120deg,#fff 0%,#ffd0e8 40%,var(--magenta));
  box-shadow:0 10px 30px rgba(255,0,170,.4);
  transition:transform .2s ease,box-shadow .2s ease;
}
.hero-cta:hover,.hero-cta:focus-visible{transform:translateY(-2px) scale(1.02);box-shadow:0 16px 40px rgba(255,0,170,.55)}

/* ---------- content flow (page.content) ---------- */
.flow{min-width:0}
.flow > article{
  position:relative;
  margin:0 0 20px;
  padding:26px 26px 22px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 44px rgba(0,0,0,.3);
  scroll-margin-top:150px;
  transition:border-color .25s ease,background .25s ease,transform .25s ease;
}
.flow > article:hover{border-color:rgba(255,0,160,.4);background:rgba(255,255,255,.075)}
.flow > article > *:first-child{margin-top:0}
.flow > article > *:last-child{margin-bottom:0}

.flow h2{
  margin:0 0 10px;
  font-size:1.55rem;
  line-height:1.3;
  font-weight:800;
  letter-spacing:-.02em;
}
.flow h3{
  margin:26px 0 8px;
  font-size:1.16rem;
  font-weight:700;
  color:#ffd6ec;
}
.flow p{margin:0 0 16px}
.flow strong{color:#fff}
.flow a{color:#ff9cce;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.flow a:hover{color:#fff}
.flow ul,.flow ol{margin:0 0 16px;padding-left:22px}
.flow li{margin:0 0 8px}
.flow li::marker{color:var(--pink)}
.flow figure{margin:18px 0;padding:0;border-radius:20px;overflow:hidden;border:1px solid var(--line)}
.flow img{border-radius:16px}
.flow blockquote{
  margin:18px 0;
  padding:14px 18px;
  border-radius:0 18px 18px 0;
  border-left:3px solid var(--magenta);
  background:rgba(255,0,255,.09);
  color:#ffe6f4;
}
.flow blockquote p:last-child{margin-bottom:0}
.flow table{width:100%;border-collapse:collapse;font-size:15.5px;margin:0 0 16px}
.flow th,.flow td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left}
.flow th{color:#ffc7e5;font-weight:700}
.flow code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.92em;
  padding:2px 6px;
  border-radius:8px;
  background:rgba(255,255,255,.1);
}

hr{
  border:0;
  height:2px;
  margin:0 0 18px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--pink),var(--magenta) 45%,rgba(255,255,255,0));
}

/* ---------- right rail ---------- */
.rail{
  position:sticky;
  top:148px;
  min-width:0;
}
.rail-card{
  padding:20px 18px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:linear-gradient(170deg,rgba(255,255,255,.1),rgba(255,255,255,.03));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 22px 50px rgba(0,0,0,.4);
}
.rail-h{
  margin:0 0 10px;
  font-size:1.05rem;
  font-weight:800;
  letter-spacing:.16em;
  color:#ffc9e6;
}
.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.rail-list a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:0 12px;
  border-radius:14px;
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  text-decoration:none;
  border:1px solid transparent;
  transition:color .2s ease,background .2s ease,border-color .2s ease,padding-left .2s ease;
}
.rail-list a:hover,.rail-list a:focus-visible{
  color:#fff;
  background:rgba(255,0,150,.18);
  border-color:rgba(255,0,160,.45);
  padding-left:18px;
}

/* ---------- footer block ---------- */
.foot-grid{
  position:relative;
  z-index:1;
  max-width:var(--max);
  margin:0 auto;
  padding:36px 20px 26px;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.4fr;
  gap:24px;
  border-top:1px solid var(--line);
}
.fg-col{min-width:0}
.fg-name{
  display:block;
  font-size:20px;
  font-weight:800;
  letter-spacing:-.02em;
  background:linear-gradient(96deg,#fff,#ffb6dc 55%,var(--magenta));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.fg-kw{margin:6px 0 0;font-size:15px;color:var(--muted)}
.fg-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.fg-col ul a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:15px;
  color:var(--muted);
  text-decoration:none;
  transition:color .2s ease,transform .2s ease;
}
.fg-col ul a:hover,.fg-col ul a:focus-visible{color:#ffb8dd;transform:translateX(3px)}
.sub-form{display:flex;gap:8px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 140px;
  min-height:44px;
  padding:0 16px;
  font:inherit;
  font-size:15px;
  color:var(--text);
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
  border-radius:999px;
  outline:none;
}
.sub-form input::placeholder{color:#a98da0}
.sub-form input:focus{border-color:var(--magenta);background:rgba(255,0,255,.12)}
.sub-form button{
  min-height:44px;
  padding:0 20px;
  font:inherit;
  font-size:15px;
  font-weight:700;
  color:#22040f;
  background:linear-gradient(120deg,var(--pink),var(--magenta));
  border:0;
  border-radius:999px;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease;
}
.sub-form button:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,0,170,.45)}

/* ---------- minimal footer ---------- */
.foot{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 18px;
  max-width:var(--max);
  margin:0 auto;
  padding:18px 20px 34px;
  border-top:1px solid var(--line);
}
.foot p{margin:0;font-size:15px;color:#9d8496}
.foot-links{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:15px}
.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--muted);
  text-decoration:none;
}
.foot-links a:hover,.foot-links a:focus-visible{color:#ffb8dd;text-decoration:underline;text-underline-offset:3px}

/* ---------- to top ---------- */
.to-top{
  position:fixed;
  right:16px;
  bottom:18px;
  z-index:70;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  color:#fff;
  text-decoration:none;
  background:rgba(255,0,140,.28);
  border:1px solid rgba(255,0,170,.55);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 10px 26px rgba(0,0,0,.4);
  transition:background .2s ease,transform .2s ease;
}
.to-top:hover,.to-top:focus-visible{background:rgba(255,0,180,.5);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .page-grid{grid-template-columns:1fr;padding:18px 16px 34px;gap:18px}
  .rail{position:static;order:3}
  .rail-list{display:grid;grid-template-columns:1fr 1fr;gap:4px 6px}
  .hero{grid-template-columns:1fr;min-height:0;padding:18px;gap:16px}
  .hero-art{aspect-ratio:16 / 10}
  .flow > article{scroll-margin-top:130px}
  .foot-grid{grid-template-columns:1fr 1fr;padding:28px 16px 20px}
}

@media (max-width:760px){
  .topbar{position:static}
  .subbar{top:0}
  .bar-inner{flex-wrap:wrap;padding:10px 14px;min-height:0;gap:6px}
  .brand{order:1;font-size:18px}
  .cta{order:2;margin-left:auto;padding:0 16px;min-height:42px;font-size:14.5px}
  .nav-l{order:3;flex:1 0 100%;overflow-x:auto;scrollbar-width:none}
  .nav-r{order:4;flex:1 0 100%;overflow-x:auto;scrollbar-width:none}
  .nav-l::-webkit-scrollbar,.nav-r::-webkit-scrollbar{display:none}
  .nav-l ul,.nav-r ul{justify-content:flex-start;gap:2px}
  .nav-l a,.nav-r a{min-height:44px;padding:0 12px;font-size:15px}
  .subbar a{min-height:44px}
  .flow > article{padding:22px 18px 18px;border-radius:24px}
  .flow h2{font-size:1.4rem}
  .foot{flex-direction:column;align-items:flex-start;padding:16px 16px 30px}
  .to-top{right:12px;bottom:12px;font-size:14px;padding:0 14px}
}

@media (max-width:420px){
  body{font-size:16.5px}
  .rail-list{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .aurora span,.brand-dot,.hero-mesh{animation:none}
  *{transition-duration:.01ms !important}
}

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