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

:root{
  --ink:#26171f;
  --bg:#0d070c;
  --mag:#ff0080;
  --vio:#ff00ff;
  --paper:#fbf1f7;
  --dim:#cbb3c6;
  --line:rgba(255,255,255,.13);
  --soft:rgba(255,255,255,.045);
  --wrap:1160px;
  --head:64px;
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}
html,body{overflow-x:hidden}

body{
  margin:0;
  padding-top:var(--head);
  background:var(--bg);
  color:var(--paper);
  font-family:Rubik,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:-22vmax;
  z-index:-2;
  pointer-events:none;
  opacity:.78;
  filter:blur(30px) saturate(140%);
  background:
    radial-gradient(38% 40% at 18% 12%,rgba(255,0,128,.62),transparent 62%),
    radial-gradient(34% 36% at 82% 16%,rgba(255,0,255,.46),transparent 60%),
    radial-gradient(44% 44% at 64% 80%,rgba(126,24,255,.34),transparent 64%),
    radial-gradient(30% 30% at 12% 84%,rgba(255,74,0,.24),transparent 62%);
  animation:aurora 28s ease-in-out infinite alternate;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:.62;
  background-image:radial-gradient(rgba(255,255,255,.1) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 72%);
}

@keyframes aurora{
  0%{transform:translate3d(-2%,-1%,0) rotate(-3deg) scale(1.02)}
  50%{transform:translate3d(2%,2%,0) rotate(2deg) scale(1.06)}
  100%{transform:translate3d(-1%,3%,0) rotate(-2deg) scale(1.03)}
}

a{color:#ffb3d9}
:focus-visible{outline:2px solid var(--vio);outline-offset:3px}

/* ---------- 顶栏 ---------- */
.bar{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--head);
  z-index:70;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 clamp(14px,4vw,40px);
  background:rgba(13,7,12,.74);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.mark{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  text-decoration:none;
}
.mark-glyph{
  display:grid;
  place-items:center;
  min-width:42px;
  height:38px;
  padding:0 9px;
  font-family:Outfit,Impact,sans-serif;
  font-weight:700;
  font-size:19px;
  letter-spacing:.04em;
  color:#fff;
  border:1px solid rgba(255,0,128,.62);
  background:linear-gradient(115deg,rgba(255,0,128,.34),rgba(255,0,255,.18));
  box-shadow:0 0 22px rgba(255,0,128,.32);
}
.mark-glyph:hover{box-shadow:0 0 28px rgba(255,0,255,.6)}

.bar-tools{display:flex;align-items:center;gap:10px}

.tell{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 14px;
  font-size:16px;
  color:var(--paper);
  text-decoration:none;
  border:1px solid var(--line);
  letter-spacing:.06em;
}
.tell:hover{color:#fff;border-color:rgba(255,0,128,.7);background:rgba(255,0,128,.14)}

.burger{
  display:grid;
  place-content:center;
  gap:5px;
  width:46px;
  height:44px;
  padding:0;
  background:transparent;
  border:1px solid var(--line);
  cursor:pointer;
}
.burger span{
  display:block;
  width:20px;
  height:2px;
  background:var(--paper);
  transition:transform .28s ease,opacity .2s ease;
}
html.menu-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
html.menu-open .burger span:nth-child(2){opacity:0}
html.menu-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 全屏菜单 ---------- */
.menu{
  position:fixed;
  inset:0;
  z-index:60;
  overflow-y:auto;
  padding:calc(var(--head) + 26px) clamp(18px,6vw,72px) 48px;
  background:
    radial-gradient(60% 50% at 82% 8%,rgba(255,0,255,.28),transparent 66%),
    radial-gradient(70% 60% at 10% 92%,rgba(255,0,128,.24),transparent 68%),
    #0a0509;
  transform:translateY(-102%);
  transition:transform .46s cubic-bezier(.4,0,.2,1);
}
html.menu-open .menu{transform:translateY(0)}
html.menu-open body{overflow:hidden}

.menu ol{
  list-style:none;
  margin:0;
  padding:0;
  max-width:660px;
  display:grid;
  gap:2px;
}
.menu li{border-bottom:1px solid var(--line)}
.menu a{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:58px;
  padding:12px 4px;
  color:var(--paper);
  text-decoration:none;
  font-family:Outfit,Impact,sans-serif;
  font-size:clamp(19px,4.4vw,27px);
  font-weight:600;
  line-height:1.3;
  transition:padding-left .22s ease,background .22s ease,color .22s ease;
}
.menu a:hover,
.menu a:focus-visible{
  color:#fff;
  padding-left:14px;
  background:linear-gradient(90deg,rgba(255,0,128,.22),transparent 78%);
}
.menu .num{
  font-family:Rubik,sans-serif;
  font-size:13px;
  font-weight:500;
  letter-spacing:.2em;
  color:var(--mag);
  min-width:2.3em;
}
.menu .lbl{display:block}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(26px,4.5vw,52px) clamp(16px,4vw,40px) clamp(30px,4.5vw,52px);
  display:grid;
  grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:clamp(22px,4vw,52px);
  align-items:center;
  min-height:45vh;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(90deg,var(--soft) 1px,transparent 1px),
    linear-gradient(180deg,var(--soft) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(72% 78% at 30% 40%,#000,transparent);
  mask-image:radial-gradient(72% 78% at 30% 40%,#000,transparent);
  opacity:.7;
}
.hero-copy{position:relative}

.eyebrow{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-size:13px;
  letter-spacing:.24em;
  color:#ffc2e2;
}
.eyebrow .dash{
  width:34px;
  height:2px;
  background:linear-gradient(90deg,var(--mag),var(--vio));
}

.hero h1{
  margin:0 0 16px;
  font-family:Outfit,Impact,sans-serif;
  font-weight:700;
  font-size:clamp(30px,5.6vw,50px);
  line-height:1.16;
  letter-spacing:-.015em;
  background:linear-gradient(96deg,#fff 24%,#ffd0e9 58%,#ff7cc4 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  text-wrap:balance;
}

.lede{
  margin:0 0 22px;
  max-width:44ch;
  color:#e3cfdc;
  font-size:17px;
}

.hero-acts{display:flex;flex-wrap:wrap;gap:10px}
.cta,.ghost{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:0 20px;
  font-size:16px;
  font-weight:600;
  text-decoration:none;
  letter-spacing:.04em;
}
.cta{
  color:#fff;
  background:linear-gradient(100deg,var(--mag),var(--vio));
  box-shadow:0 12px 32px rgba(255,0,128,.32);
}
.cta:hover{filter:hue-rotate(-18deg) brightness(1.08)}
.ghost{
  color:var(--paper);
  border:1px solid var(--line);
}
.ghost:hover{border-color:rgba(255,0,255,.7);color:#fff}

.collage{position:relative;min-height:clamp(232px,32vh,318px)}
.frame{
  position:absolute;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.26);
  background:linear-gradient(135deg,rgba(255,0,128,.5),rgba(255,0,255,.3) 48%,rgba(38,23,31,.9));
  box-shadow:0 22px 46px rgba(0,0,0,.55);
}
.frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:3;
  pointer-events:none;
  background:linear-gradient(150deg,rgba(255,0,128,.34),rgba(255,0,255,.16) 55%,rgba(0,255,255,.12));
  mix-blend-mode:screen;
}
.frame-a{left:0;top:0;width:63%;aspect-ratio:4/3;z-index:2}
.frame-b{right:0;bottom:0;width:57%;aspect-ratio:5/4;z-index:1}
.frame img{display:block;width:100%;height:100%;object-fit:cover;margin:0;border:0}

/* ---------- 正文骨架 ---------- */
main{
  max-width:var(--wrap);
  margin:0 auto;
  padding:clamp(26px,4.5vw,50px) clamp(16px,4vw,40px) 68px;
}

.prose{
  display:grid;
  grid-template-columns:250px minmax(0,1fr);
  gap:clamp(24px,3.6vw,50px);
  align-items:start;
}

.prose > aside{
  grid-column:1;
  grid-row:1 / span 40;
  position:sticky;
  top:calc(var(--head) + 20px);
  padding:18px;
  border:1px solid var(--line);
  border-bottom:3px solid var(--mag);
  background:rgba(255,255,255,.035);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.prose > aside small{
  display:block;
  margin:0 0 8px;
  font-size:12px;
  letter-spacing:.24em;
  color:var(--mag);
}
.prose > aside h2{
  margin:0 0 12px;
  font-family:Outfit,Impact,sans-serif;
  font-size:19px;
  line-height:1.35;
  letter-spacing:.01em;
}
.rail ul{list-style:none;margin:0;padding:0;display:grid}
.rail a{
  display:block;
  min-height:40px;
  padding:9px 0;
  font-size:16px;
  color:var(--dim);
  text-decoration:none;
  border-bottom:1px dashed rgba(255,255,255,.1);
  transition:color .18s ease,padding-left .18s ease;
}
.rail a:hover{color:#fff;padding-left:6px}
.rail-note{
  margin:14px 0 0;
  font-size:16px;
  line-height:1.6;
  color:#b79fb1;
}

.prose > section{
  grid-column:2;
  position:relative;
  margin:0 0 clamp(28px,4vw,46px);
  padding:0 0 clamp(26px,3.6vw,40px);
  border-bottom:1px solid var(--line);
  scroll-margin-top:calc(var(--head) + 22px);
}
.prose > section:last-child{margin-bottom:0}
.prose > section::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-1px;
  width:76px;
  height:3px;
  background:linear-gradient(90deg,var(--mag),var(--vio));
}

.prose small{
  display:block;
  margin:0 0 8px;
  font-size:13px;
  letter-spacing:.2em;
  color:#ff8ccb;
}
.prose h2{
  margin:0 0 14px;
  font-family:Outfit,Impact,sans-serif;
  font-size:clamp(23px,3.2vw,33px);
  font-weight:700;
  line-height:1.26;
  letter-spacing:-.01em;
  color:#fff;
}
.prose h3{
  margin:26px 0 10px;
  font-family:Outfit,Impact,sans-serif;
  font-size:20px;
  line-height:1.4;
  color:#ffd0e9;
}
.prose p{margin:0 0 15px;color:#e9dae4}
.prose ul,.prose ol{margin:0 0 15px;padding-left:1.25em;color:#e9dae4}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--mag)}
.prose strong{color:#fff}
.prose blockquote{
  margin:20px 0;
  padding:12px 18px;
  border-left:3px solid var(--vio);
  background:rgba(255,0,255,.08);
  color:#f0dfea;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose figure{margin:20px 0}
.prose img{
  display:block;
  max-width:100%;
  height:auto;
  margin:20px 0;
  border:1px solid var(--line);
}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:16px}
.prose th,.prose td{border:1px solid var(--line);padding:9px 11px;text-align:left}
.prose th{background:rgba(255,0,128,.12);color:#fff}
.prose code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.94em;
  padding:1px 5px;
  background:rgba(255,255,255,.09);
}
.prose hr{border:0;border-top:1px solid var(--line);margin:22px 0}

/* ---------- 页脚 ---------- */
footer{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.35fr;
  gap:clamp(18px,3vw,36px);
  padding:clamp(30px,5vw,52px) clamp(16px,5vw,56px) 20px;
  border-top:1px solid var(--line);
  background:rgba(8,4,8,.72);
}
footer p{margin:0;font-size:16px;line-height:1.7;color:#bda9b8}
footer strong{display:block;margin-bottom:10px;color:#fff;font-size:16px;letter-spacing:.06em}
.f-brand strong{
  font-family:Outfit,Impact,sans-serif;
  font-size:20px;
  letter-spacing:.01em;
}
.f-brand span{display:block;max-width:32ch;color:#a894a4}
footer p a{
  display:block;
  min-height:40px;
  padding:8px 0;
  font-size:16px;
  color:#c9b5c4;
  text-decoration:none;
  border-bottom:1px dashed rgba(255,255,255,.09);
}
footer p a:hover{color:#fff;border-bottom-color:rgba(255,0,128,.6)}
.f-note{display:block;margin-bottom:10px;color:#a894a4}
.f-sub form{display:flex;gap:8px}
.f-sub input{
  flex:1 1 auto;
  min-width:0;
  min-height:44px;
  padding:0 12px;
  font:inherit;
  font-size:16px;
  color:var(--paper);
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
}
.f-sub input::placeholder{color:#9f8b9b}
.f-sub button{
  min-height:44px;
  padding:0 18px;
  font:inherit;
  font-size:16px;
  font-weight:600;
  color:#fff;
  border:0;
  cursor:pointer;
  background:linear-gradient(100deg,var(--mag),var(--vio));
}
.f-sub button:hover{filter:brightness(1.1)}
.f-copy{
  grid-column:1 / -1;
  margin-top:12px;
  padding-top:16px;
  font-size:15px;
  line-height:1.6;
  color:#8f7b8b;
  border-top:1px solid var(--line);
}

/* ---------- 滚动显现 ---------- */
html.js .prose > section{opacity:0;transform:translateY(14px)}
html.js .prose > section.in,
html.js .prose > section:first-of-type{opacity:1;transform:none}
html.js .prose > section{transition:opacity .5s ease,transform .5s ease}

/* ---------- 断点 ---------- */
@media (max-width:900px){
  .hero{grid-template-columns:minmax(0,1fr);min-height:0}
  .collage{min-height:230px;max-width:460px}
  .prose{grid-template-columns:minmax(0,1fr);gap:22px}
  .prose > aside{grid-column:1;grid-row:auto;position:static}
  .prose > aside h2{font-size:18px}
  .rail ul{grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:0 14px}
  .prose > section{grid-column:1}
  footer{grid-template-columns:1fr 1fr}
}

@media (max-width:560px){
  body{font-size:16px}
  .hero{padding-top:22px}
  .hero-acts{gap:8px}
  .cta,.ghost{padding:0 16px}
  .collage{min-height:210px}
  .frame-a{width:66%}
  .frame-b{width:58%}
  footer{grid-template-columns:1fr;gap:16px}
  .f-copy{font-size:14px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before{animation:none}
  html.js .prose > section{opacity:1;transform:none;transition:none}
  .menu{transition:none}
}

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