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

:root{
  --ink:#192617;
  --deep:#0b160f;
  --mint:#87ff71;
  --cyan:#01cdfe;
  --pink:#ff71ce;
  --violet:#b967ff;
  --paper:#e6fae2;
  --line:rgba(135,255,113,.22);
  --rail:114px;
  --wrap:68rem;
}

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

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

body{
  margin:0;
  padding-left:var(--rail);
  background:
    radial-gradient(120% 60% at 50% 0%, rgba(185,103,255,.14), transparent 62%),
    linear-gradient(180deg,#0d1a12 0%, var(--deep) 55%, #07100a 100%);
  background-attachment:fixed;
  color:#dff3db;
  font-family:"Public Sans",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:80;
  background:repeating-linear-gradient(180deg, rgba(0,0,0,.26) 0 1px, rgba(0,0,0,0) 1px 3px);
  opacity:.42;
  mix-blend-mode:multiply;
}

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

a{color:var(--cyan)}

/* ---------- 左侧竖排胶囊导航 ---------- */
.rail{
  position:fixed;
  top:0;bottom:0;left:0;
  width:var(--rail);
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.9rem;
  padding:1rem .55rem 1.2rem;
  background:linear-gradient(180deg, rgba(25,38,23,.97), rgba(10,21,14,.97));
  border-right:1px solid var(--line);
  box-shadow:12px 0 44px rgba(0,0,0,.45);
}

.brand{
  flex:0 0 auto;
  width:48px;height:48px;
  display:grid;place-items:center;
  border-radius:50%;
  text-decoration:none;
  color:#0b160f;
  font-family:"Libre Bodoni",Georgia,serif;
  font-weight:700;
  font-size:16px;
  letter-spacing:.02em;
  background:linear-gradient(135deg,var(--mint),var(--cyan) 60%,var(--violet));
  box-shadow:0 0 0 1px rgba(255,255,255,.3), 0 0 22px rgba(1,205,254,.5);
}
.brand img{border-radius:50%;object-fit:cover}

.rail nav{
  flex:1 1 auto;
  min-height:0;
  width:100%;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:thin;
}
.rail nav ul{
  list-style:none;
  margin:0;padding:0;
  display:flex;
  flex-direction:column;
  gap:.32rem;
}
.rail nav a{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:.5rem .35rem;
  border-radius:999px;
  border:1px solid rgba(135,255,113,.24);
  background:rgba(135,255,113,.04);
  color:#d6f2d2;
  font-size:16px;
  line-height:1.35;
  text-decoration:none;
  text-align:center;
  white-space:nowrap;
  transition:background .25s, color .25s, border-color .25s, box-shadow .25s;
}
.rail nav a:hover,
.rail nav a:focus-visible{
  color:var(--mint);
  border-color:var(--mint);
  background:rgba(135,255,113,.12);
  box-shadow:0 0 18px rgba(135,255,113,.35);
  outline:none;
}
.rail nav a.on{
  color:#0b160f;
  font-weight:700;
  border-color:transparent;
  background:linear-gradient(120deg,var(--mint),var(--cyan));
  box-shadow:0 0 20px rgba(1,205,254,.5);
}

.fab{
  position:fixed;
  right:1.1rem;
  bottom:1.1rem;
  z-index:75;
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:.55rem 1.25rem;
  border-radius:999px;
  text-decoration:none;
  font-weight:700;
  font-size:16px;
  color:#0b160f;
  background:linear-gradient(120deg,var(--mint),var(--cyan));
  box-shadow:0 10px 32px rgba(1,205,254,.42), inset 0 0 0 1px rgba(255,255,255,.35);
}
.fab:hover{filter:hue-rotate(-18deg) brightness(1.06)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:grid;
  place-items:center;
  padding:6rem 1.4rem 8rem;
  text-align:center;
  overflow:hidden;
  clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 5vw));
  isolation:isolate;
}

.hero-art{
  position:absolute;
  inset:-10% 0;
  margin:0;
  z-index:0;
  background:
    radial-gradient(120% 90% at 50% 0%, var(--pink) 0%, var(--violet) 38%, var(--cyan) 68%, #0b160f 100%);
}
.hero-img{
  width:100%;
  height:100%;
  object-fit:cover;
  transform:scale(1.06);
  filter:hue-rotate(-14deg) saturate(1.25) contrast(1.05);
  will-change:transform;
}
.hero-art::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(255,113,206,.36), rgba(1,205,254,.22) 46%, rgba(11,22,15,.9) 96%);
}
.hero-cap{
  position:absolute;
  left:1.1rem;
  bottom:2.6rem;
  z-index:3;
  font-family:"Libre Bodoni",Georgia,serif;
  font-size:.95rem;
  letter-spacing:.34em;
  color:rgba(232,255,228,.82);
  text-transform:uppercase;
}

.hero::after{
  content:"";
  position:absolute;
  left:-25%;right:-25%;bottom:-2%;
  height:46%;
  z-index:1;
  pointer-events:none;
  opacity:.5;
  background-image:
    linear-gradient(rgba(1,205,254,.55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(1,205,254,.55) 1px, transparent 1px);
  background-size:100% 36px, 36px 100%;
  transform:perspective(360px) rotateX(63deg);
  transform-origin:bottom center;
  -webkit-mask-image:linear-gradient(180deg, transparent, #000 72%);
  mask-image:linear-gradient(180deg, transparent, #000 72%);
}

.hero-copy{position:relative;z-index:2;max-width:52rem}

.hero h1{
  margin:0;
  font-family:"Libre Bodoni",Georgia,serif;
  font-weight:700;
  font-size:clamp(2.3rem,7.4vw,5.4rem);
  line-height:1.06;
  letter-spacing:-.015em;
  color:#f2ffe9;
  text-shadow:
    0 0 16px rgba(1,205,254,.75),
    0 0 46px rgba(135,255,113,.5),
    3px 0 0 rgba(255,113,206,.55),
    -3px 0 0 rgba(1,205,254,.45);
  animation:glitch 7s steps(1,end) infinite;
}
@keyframes glitch{
  0%,86%,100%{transform:translate3d(0,0,0)}
  87%{transform:translate3d(-2px,1px,0)}
  89%{transform:translate3d(2px,-1px,0)}
  91%{transform:translate3d(-1px,0,0)}
  93%{transform:translate3d(1px,1px,0)}
}

.lede{
  margin:1.25rem auto 0;
  max-width:42rem;
  font-size:1.06rem;
  line-height:1.8;
  color:#ddf1d8;
  text-shadow:0 1px 12px rgba(11,22,15,.85);
}

.hero-band{
  position:absolute;
  left:-6%;right:-6%;bottom:0;
  height:13px;
  z-index:3;
  transform:rotate(-1.5deg);
  background:linear-gradient(90deg,var(--mint),var(--cyan) 46%,var(--violet) 82%,var(--pink));
  box-shadow:0 0 28px rgba(1,205,254,.7);
}

/* ---------- 正文区块 ---------- */
main > div:not(.hero){
  max-width:var(--wrap);
  margin:0 auto;
  padding:3.4rem 1.7rem;
  border-bottom:1px solid rgba(135,255,113,.14);
  scroll-margin-top:92px;
}
main > div:not(.hero):last-of-type{border-bottom:0}

main h2{
  margin:0 0 .2rem;
  font-family:"Libre Bodoni",Georgia,serif;
  font-weight:600;
  font-size:clamp(1.55rem,3.4vw,2.4rem);
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--mint);
  text-shadow:0 0 20px rgba(135,255,113,.28);
}
main h3{
  margin:2rem 0 .2rem;
  font-family:"Libre Bodoni",Georgia,serif;
  font-size:1.25rem;
  color:#c8ffbe;
}

hr{
  border:0;
  height:2px;
  max-width:24rem;
  margin:.85rem 0 1.7rem;
  background:linear-gradient(90deg,var(--mint),var(--cyan),rgba(1,205,254,0));
}

main p{margin:0 0 1.05rem;color:#d8ecd4;max-width:62ch}
main ul,main ol{padding-left:1.35rem;margin:0 0 1.2rem;color:#d8ecd4}
main li{margin:.35rem 0}
main li::marker{color:var(--mint)}
main a{color:var(--cyan);text-underline-offset:3px}
main a:hover{color:var(--mint)}
main figure{margin:1.6rem 0}
main figure img{border-radius:18px;border:1px solid rgba(135,255,113,.28)}
main figcaption{margin-top:.6rem;font-size:.95rem;color:#9fc29b}
main blockquote{
  margin:1.6rem 0;
  padding:.9rem 1.2rem;
  border-left:3px solid var(--cyan);
  border-radius:0 18px 18px 0;
  background:rgba(1,205,254,.07);
  color:#d5eff0;
}
main blockquote p:last-child{margin-bottom:0}
main div,main aside,main section{max-width:100%}
main img{border-radius:18px}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:2rem;
  padding:2.6rem 1.7rem 2.1rem;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(12,23,16,.55), #07100a);
}
.foot-top,.foot-bar{max-width:var(--wrap);margin:0 auto}

.foot h2{
  margin:0;
  font-family:"Libre Bodoni",Georgia,serif;
  font-size:1.4rem;
  color:var(--mint);
}
.foot hr{max-width:9rem;margin:.55rem 0 0}

.sub{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.2rem 0 2.1rem;max-width:31rem}
.sub input{
  flex:1 1 12rem;
  min-height:46px;
  padding:0 1.15rem;
  font-size:16px;
  font-family:inherit;
  color:#eafbe6;
  border-radius:999px;
  border:1px solid rgba(135,255,113,.38);
  background:rgba(255,255,255,.05);
}
.sub input::placeholder{color:#8fb08b}
.sub input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(1,205,254,.22)}
.sub button{
  min-height:46px;
  padding:0 1.5rem;
  font-size:16px;
  font-family:inherit;
  font-weight:700;
  color:#0b160f;
  border:0;
  border-radius:999px;
  cursor:pointer;
  background:linear-gradient(120deg,var(--mint),var(--cyan));
}
.sub button:hover{filter:hue-rotate(-18deg)}

.foot-bar{
  display:flex;
  flex-wrap:wrap;
  gap:1rem 1.6rem;
  align-items:center;
  justify-content:space-between;
  padding-top:1.4rem;
  border-top:1px solid rgba(135,255,113,.12);
}
.foot-bar address{
  font-style:normal;
  line-height:1.55;
  color:#a5c5a1;
  font-size:.95rem;
}
.foot-bar address strong{
  display:block;
  font-family:"Libre Bodoni",Georgia,serif;
  font-size:1.1rem;
  letter-spacing:.05em;
  color:var(--mint);
}
.foot-links{
  display:flex;
  flex-wrap:wrap;
  gap:.1rem .9rem;
  margin:0;
  padding:0;
  list-style:none;
}
.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:.2rem 0;
  font-size:16px;
  color:#c9e8c5;
  text-decoration:none;
}
.foot-links a:hover{color:var(--cyan);text-decoration:underline}

/* ---------- 动效 ---------- */
.rv{opacity:0;transform:translate3d(0,20px,0);transition:opacity .7s ease, transform .75s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ---------- 移动端 ---------- */
@media (max-width:899px){
  body{padding-left:0;padding-top:64px}

  .rail{
    top:0;right:0;bottom:auto;left:0;
    width:auto;
    flex-direction:row;
    align-items:center;
    gap:.55rem;
    padding:.5rem .7rem;
    border-right:0;
    border-bottom:1px solid var(--line);
    box-shadow:0 10px 30px rgba(0,0,0,.5);
  }
  .brand{width:42px;height:42px;font-size:15px}
  .rail nav{
    flex:1 1 auto;
    min-width:0;
    overflow-x:auto;
    overflow-y:hidden;
    scrollbar-width:none;
  }
  .rail nav::-webkit-scrollbar{display:none}
  .rail nav ul{flex-direction:row;gap:.4rem;padding-right:.4rem}
  .rail nav a{min-height:42px;padding:.4rem .85rem}

  .hero{min-height:92svh;padding:4.2rem 1.1rem 6rem}
  .hero-cap{left:.9rem;bottom:2.1rem;letter-spacing:.24em}

  main > div:not(.hero){padding:2.6rem 1.15rem;scroll-margin-top:84px}
  .foot{padding:2.2rem 1.15rem 1.8rem}
  .fab{right:.9rem;bottom:.9rem;padding:.5rem 1rem}
  .foot-bar{flex-direction:column;align-items:flex-start}
}

@media (max-width:420px){
  .hero h1{font-size:clamp(2rem,9.4vw,2.9rem)}
  .lede{font-size:1rem}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .rv{opacity:1;transform:none}
  .hero-img{transform:none}
}

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