:root{
  --ink:#1a1a2e;
  --ink-deep:#0e0e1c;
  --slab:#23233d;
  --slab-2:#191a30;
  --red:#ff0000;
  --rose:#ff006e;
  --cyan:#00f0ff;
  --text:#efe9ff;
  --dim:#b7b1d4;
  --r:28px;
  --bar:100px;
  --font-body:'Cabin',"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-display:'Amatic SC','Cabin',"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}

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

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

body{
  margin:0;
  padding:0 0 var(--bar);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background:
    radial-gradient(1100px 620px at 80% -12%, rgba(255,0,110,.24), transparent 62%),
    radial-gradient(880px 520px at 2% 14%, rgba(0,240,255,.12), transparent 58%),
    linear-gradient(#171729, var(--ink) 42%, #111120);
  background-attachment:fixed;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:9998;
  pointer-events:none;
  opacity:.32;
  background:repeating-linear-gradient(to bottom, rgba(0,0,0,.55) 0 1px, transparent 1px 3px);
}

img{max-width:100%;height:auto}

a{color:var(--text)}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* 主视觉 */
.hero{
  position:relative;
  max-width:1240px;
  min-height:100vh;
  margin:0 auto;
  padding:clamp(24px,6vh,72px) clamp(18px,5vw,60px) clamp(30px,9vh,90px);
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  align-items:center;
  gap:clamp(24px,5vw,64px);
}

.hero-fig{
  position:relative;
  margin:0;
  aspect-ratio:4/5;
  max-height:74vh;
  border-radius:var(--r);
  overflow:hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,0,110,.35), transparent 60%),
    linear-gradient(150deg,#2a1030,#131327);
  box-shadow:
    0 0 0 1px rgba(255,0,110,.35),
    0 30px 70px -26px rgba(255,0,110,.65);
}

.hero-img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}

.hero-art{
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(90deg, rgba(0,240,255,.16) 0 14px, transparent 14px 28px),
    repeating-linear-gradient(0deg, rgba(255,0,110,.14) 0 14px, transparent 14px 28px);
}

.hero-art::after{
  content:"";
  position:absolute;
  inset:14%;
  border-radius:20px;
  box-shadow:inset 0 0 0 1px rgba(0,240,255,.55), 0 0 40px rgba(0,240,255,.35);
}

.hero-copy{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:20px;
  text-align:center;
}

.badge{
  display:inline-block;
  padding:5px 18px;
  border-radius:999px;
  font-family:var(--font-display);
  font-size:1.3rem;
  letter-spacing:.24em;
  color:#fff;
  background:rgba(255,0,110,.15);
  box-shadow:inset 0 0 0 1px rgba(255,0,110,.85), 0 0 22px rgba(255,0,110,.55);
  transform:rotate(-3deg);
}

h1{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(2.9rem,7.2vw,5.2rem);
  line-height:1.04;
  letter-spacing:.03em;
  color:#fff;
  text-shadow:0 0 12px rgba(255,0,0,.8), 0 0 38px rgba(255,0,110,.55);
}

.glitch{position:relative;display:inline-block}

.glitch::before,
.glitch::after{
  content:attr(data-text);
  position:absolute;
  inset:0;
  pointer-events:none;
  text-shadow:none;
}

.glitch::before{
  color:var(--cyan);
  clip-path:inset(0 0 56% 0);
  transform:translate(-3px,-2px);
  opacity:.8;
  animation:gl-a 4.6s infinite steps(2,end);
}

.glitch::after{
  color:var(--red);
  clip-path:inset(54% 0 0 0);
  transform:translate(3px,2px);
  opacity:.85;
  animation:gl-b 3.8s infinite steps(2,end);
}

@keyframes gl-a{
  0%,88%,100%{transform:translate(-3px,-2px)}
  90%{transform:translate(-10px,1px) skewX(-8deg)}
  95%{transform:translate(5px,-3px)}
}

@keyframes gl-b{
  0%,84%,100%{transform:translate(3px,2px)}
  88%{transform:translate(10px,-1px) skewX(9deg)}
  93%{transform:translate(-6px,3px)}
}

.hero-cta{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:12px;
  margin-top:4px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:12px 26px;
  border-radius:999px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.05em;
  text-decoration:none;
  color:#fff;
  background:linear-gradient(120deg,var(--red),var(--rose));
  box-shadow:0 0 24px rgba(255,0,110,.6);
  transition:transform .2s ease, box-shadow .2s ease;
}

.btn:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(255,0,110,.85)}

.btn.ghost{
  background:transparent;
  color:#ffd9ea;
  box-shadow:inset 0 0 0 1px rgba(255,0,110,.75), 0 0 18px rgba(255,0,110,.25);
}

/* 正文骨架 */
.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 clamp(14px,3vw,32px) 56px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 246px;
  align-items:start;
  gap:clamp(20px,3vw,36px);
}

.stage{min-width:0}

.stage-h2{
  margin:0 0 6px;
  font-family:var(--font-display);
  font-size:clamp(2.1rem,4.6vw,3.1rem);
  line-height:1.1;
  letter-spacing:.04em;
  color:#fff;
  text-shadow:0 0 16px rgba(255,0,110,.6);
}

.subtitle{
  margin:0 0 30px;
  padding-left:14px;
  border-left:3px solid var(--rose);
  color:var(--dim);
  font-size:16px;
  line-height:1.75;
}

.prose{counter-reset:sec}

.prose section{
  counter-increment:sec;
  position:relative;
  margin:0 0 22px;
  padding:clamp(22px,3.4vw,36px);
  border-radius:var(--r);
  background:var(--slab);
  overflow:hidden;
}

.prose section:nth-child(even){background:var(--slab-2)}
.prose section:last-child{margin-bottom:0}
.prose section[id]{scroll-margin-top:24px}

.prose section::after{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:100%;
  height:3px;
  background:linear-gradient(90deg,var(--red),var(--rose),transparent 70%);
  opacity:.75;
}

.prose h2{
  margin:0 0 14px;
  font-family:var(--font-display);
  font-size:clamp(1.7rem,3.4vw,2.3rem);
  line-height:1.2;
  letter-spacing:.04em;
  color:#fff;
  text-shadow:0 0 14px rgba(255,0,0,.55);
}

.prose h2::before{
  content:counter(sec,decimal-leading-zero);
  display:inline-block;
  margin-right:12px;
  padding:1px 9px;
  border-radius:8px;
  font-family:var(--font-body);
  font-size:.72em;
  letter-spacing:.08em;
  color:#fff;
  background:rgba(255,0,110,.22);
  box-shadow:inset 0 0 0 1px rgba(255,0,110,.6);
  vertical-align:.12em;
}

.prose h3{
  margin:22px 0 10px;
  font-size:1.24rem;
  color:#fff;
  text-shadow:0 0 10px rgba(255,0,110,.4);
}

.prose p{margin:0 0 15px;color:#e2dcf5}
.prose p:last-child{margin-bottom:0}

.prose a{
  color:#ff9ec4;
  text-decoration:underline;
  text-decoration-color:rgba(255,0,110,.7);
  text-underline-offset:3px;
}

.prose a:hover{color:#fff}

.prose ul,
.prose ol{margin:0 0 16px;padding-left:1.25em;color:#e2dcf5}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--rose)}

.prose blockquote{
  margin:18px 0;
  padding:14px 18px;
  border-radius:16px;
  background:rgba(0,240,255,.07);
  box-shadow:inset 0 0 0 1px rgba(0,240,255,.35);
  color:#d8f8ff;
}

.prose img{border-radius:18px;display:block;margin:14px 0}

.prose figure{margin:16px 0}
.prose figcaption{font-size:15px;color:var(--dim)}

.prose table{
  width:100%;
  border-collapse:collapse;
  margin:16px 0;
  font-size:16px;
}

.prose th,
.prose td{
  padding:9px 12px;
  text-align:left;
  border-bottom:1px solid rgba(255,0,110,.25);
}

.prose th{color:#fff;background:rgba(255,0,110,.12)}

.prose strong{color:#fff}

/* 右侧栏 */
.rail{
  position:sticky;
  top:22px;
  border-radius:var(--r);
  background:var(--slab-2);
  padding:16px 14px;
  box-shadow:inset 0 0 0 1px rgba(255,0,110,.22);
}

.rail-list{
  margin:0;
  padding:0;
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:3px;
}

.rail-list a{
  display:block;
  padding:10px 12px;
  min-height:42px;
  border-radius:14px;
  font-size:16px;
  text-decoration:none;
  color:var(--dim);
  transition:background .2s ease,color .2s ease;
}

.rail-list a:hover,
.rail-list a:focus-visible{
  color:#fff;
  background:rgba(255,0,110,.16);
}

/* 页脚 */
.foot{
  max-width:1180px;
  margin:0 auto;
  padding:40px clamp(14px,3vw,32px) 26px;
  border-top:1px solid rgba(255,0,110,.28);
}

.foot-cols{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:22px;
}

.foot-addr{
  font-family:var(--font-display);
  font-style:normal;
  font-size:1.9rem;
  letter-spacing:.14em;
  color:#fff;
  text-shadow:0 0 16px rgba(255,0,110,.6);
}

.foot-list,
.foot-mini{
  margin:0;
  padding:0;
  list-style:none;
}

.foot-list li{margin:0 0 4px}

.foot-list a,
.foot-mini a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:6px 2px;
  font-size:16px;
  text-decoration:none;
  color:var(--dim);
}

.foot-list a:hover,
.foot-mini a:hover{color:#fff;text-shadow:0 0 12px rgba(255,0,110,.8)}

.foot-base{
  margin-top:26px;
  padding-top:16px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}

.copy{color:var(--dim);font-size:15px;letter-spacing:.05em}

.foot-mini{display:flex;gap:16px}

/* 底部导航条 */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:9000;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:6px;
  padding:10px clamp(10px,3vw,30px);
  background:rgba(12,12,24,.95);
  backdrop-filter:blur(10px);
  border-top:1px solid rgba(255,0,110,.45);
  box-shadow:0 -12px 36px rgba(255,0,110,.2);
}

.dock-nav ul{
  display:flex;
  gap:5px;
  margin:0;
  padding:0;
  list-style:none;
}

.dock-nav--left{justify-self:end}
.dock-nav--right{justify-self:start}
.dock-nav--left ul{justify-content:flex-end}

.dock a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 15px;
  border-radius:999px;
  font-size:16px;
  text-decoration:none;
  color:var(--text);
  white-space:nowrap;
  transition:background .2s ease, box-shadow .2s ease, color .2s ease;
}

.dock-nav a:hover,
.dock-nav a.on{
  color:#fff;
  background:rgba(255,0,110,.2);
  box-shadow:inset 0 0 0 1px rgba(0,240,255,.65), 0 0 16px rgba(255,0,110,.5);
}

.dock .cta a{
  color:#fff;
  font-weight:700;
  background:linear-gradient(120deg,var(--red),var(--rose));
  box-shadow:0 0 20px rgba(255,0,110,.65);
}

.dock-brand{
  justify-self:center;
  padding:6px 12px;
  font-family:var(--font-display);
  font-size:1.75rem;
  letter-spacing:.16em;
  color:#fff;
  text-decoration:none;
  text-shadow:0 0 14px var(--rose), 0 0 30px rgba(255,0,110,.6);
}

/* 入场动效 */
.js .rv{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .6s ease, transform .65s cubic-bezier(.22,1,.36,1);
  transition-delay:calc(var(--i, 0) * 70ms);
}

.js .rv.in{opacity:1;transform:none}

@media (max-width:980px){
  .wrap{grid-template-columns:minmax(0,1fr)}
  .rail{position:static;order:2}
  .foot-cols{grid-template-columns:1fr 1fr}
}

@media (max-width:860px){
  :root{--bar:92px}
  .hero{
    grid-template-columns:minmax(0,1fr);
    min-height:0;
    padding:26px 18px 40px;
    gap:22px;
  }
  .hero-copy{order:-1;gap:14px}
  .hero-fig{aspect-ratio:16/11;max-height:40vh}
  .dock{
    display:flex;
    justify-content:flex-start;
    gap:4px;
    padding:8px 10px;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .dock::-webkit-scrollbar{display:none}
  .dock-nav ul{gap:4px}
  .dock a{padding:8px 13px}
  .dock-brand{font-size:1.45rem;padding:6px 8px}
}

@media (max-width:560px){
  body{font-size:16px}
  .foot-cols{grid-template-columns:1fr}
  .foot-base{flex-direction:column;align-items:flex-start}
  .stage-h2{font-size:2.05rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .glitch::before,.glitch::after{animation:none}
  .btn{transition:none}
}

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