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

html{
  background:#fff4ee;
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  padding-left:250px;
  font-family:'DM Sans',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.72;
  color:#261717;
  overflow-x:hidden;
}

body::before{
  content:"";
  position:fixed;
  inset:-25%;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(circle at 14% 8%, rgba(255,0,0,.42), rgba(255,0,0,0) 46%),
    radial-gradient(circle at 86% 16%, rgba(139,0,255,.38), rgba(139,0,255,0) 44%),
    radial-gradient(circle at 72% 86%, rgba(255,120,78,.48), rgba(255,120,78,0) 52%),
    radial-gradient(circle at 20% 82%, rgba(139,0,255,.24), rgba(139,0,255,0) 48%);
  filter:blur(22px);
}

img{max-width:100%}

/* ---------- 左侧竖排玻璃导航 ---------- */
.site-rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:250px;
  z-index:30;
  display:flex;
  flex-direction:column;
  gap:22px;
  padding:24px 16px 28px;
  overflow-y:auto;
  background:rgba(255,255,255,.42);
  border-right:1px solid rgba(255,255,255,.72);
  box-shadow:14px 0 46px -28px rgba(38,23,23,.5);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:6px 8px;
  border-radius:18px;
  text-decoration:none;
  color:#261717;
}

.brand-mark{
  flex:0 0 auto;
  width:40px;height:40px;
  border-radius:14px;
  display:block;
  object-fit:cover;
  background:radial-gradient(circle at 32% 26%,#ff9a78,#ff0000 58%,#8b00ff 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7),0 10px 20px -12px rgba(139,0,255,.9);
}

.brand-name{
  font-family:'Nunito','DM Sans',system-ui,sans-serif;
  font-weight:900;
  font-size:19px;
  letter-spacing:.4px;
}

.site-rail nav{
  display:flex;
  flex-direction:column;
  gap:14px;
}

.site-rail nav p{
  display:flex;
  flex-direction:column;
  gap:3px;
  margin:0;
}

.grp{
  padding:0 10px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.14em;
  color:rgba(38,23,23,.5);
}

.site-rail nav a{
  display:flex;
  align-items:center;
  min-height:42px;
  padding:8px 12px;
  border-radius:14px;
  font-size:16.5px;
  font-weight:700;
  color:#261717;
  text-decoration:none;
  border:1px solid rgba(255,255,255,0);
  transition:background .22s ease,transform .22s ease,border-color .22s ease;
}

.site-rail nav a:hover,
.site-rail nav a:focus-visible{
  background:rgba(255,255,255,.66);
  border-color:rgba(255,255,255,.9);
  transform:translateX(3px);
  outline:none;
}

/* ---------- 主区域 ---------- */
main{
  max-width:1080px;
  margin:0 auto;
  padding:0 40px 30px;
}

.hero{
  position:relative;
  display:grid;
  grid-template-columns:minmax(200px,300px) minmax(0,1fr);
  gap:48px;
  align-items:center;
  min-height:70vh;
  padding:60px 0 54px;
}

.hero-giant{
  position:absolute;
  left:24%;
  top:-4%;
  z-index:0;
  pointer-events:none;
  font-family:'Nunito',system-ui,sans-serif;
  font-weight:900;
  font-size:clamp(120px,19vw,250px);
  line-height:.8;
  color:rgba(255,255,255,.6);
  text-shadow:0 26px 60px rgba(139,0,255,.28);
}

.hero-art{
  position:relative;
  z-index:1;
  grid-column:1;
  margin:0;
  padding:14px;
  border-radius:28px;
  background:rgba(255,255,255,.35);
  border:1px solid rgba(255,255,255,.78);
  box-shadow:0 28px 50px -30px rgba(38,23,23,.6),inset 0 1px 0 rgba(255,255,255,.85);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}

.hero-img{
  display:block;
  width:100%;
  height:auto;
  border-radius:20px;
}

.peach{
  display:block;
  aspect-ratio:1/1;
  border-radius:20px;
  background:radial-gradient(circle at 34% 28%,#ff9d7c,#ff0000 56%,#8b00ff 100%);
  box-shadow:inset 0 2px 0 rgba(255,255,255,.6);
}

.hero-copy{
  position:relative;
  z-index:1;
  grid-column:2;
  text-align:right;
}

.hero-copy h1{
  margin:0 0 18px;
  font-family:'Nunito','DM Sans',system-ui,sans-serif;
  font-weight:900;
  font-size:clamp(30px,4.2vw,56px);
  line-height:1.12;
  letter-spacing:-.5px;
}

.hero-lead{
  max-width:42ch;
  margin:0 0 28px auto;
  font-size:17px;
  line-height:1.72;
  color:rgba(38,23,23,.78);
}

.hero-jump{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:50px;
  padding:0 30px;
  border-radius:999px;
  font-weight:800;
  font-size:16.5px;
  color:#fff;
  text-decoration:none;
  background:linear-gradient(120deg,#ff0000,#8b00ff);
  box-shadow:0 18px 32px -16px rgba(139,0,255,.85),inset 0 1px 0 rgba(255,255,255,.45);
  transition:transform .22s ease,box-shadow .22s ease;
}

.hero-jump:hover{transform:translateY(-2px);box-shadow:0 24px 38px -16px rgba(139,0,255,.9)}

/* ---------- 正文玻璃卡 ---------- */
main > section:not(.hero){
  position:relative;
  max-width:820px;
  margin:0 0 28px;
  padding:34px 32px;
  border-radius:28px;
  background:rgba(255,255,255,.52);
  border:1px solid rgba(255,255,255,.74);
  box-shadow:0 22px 48px -28px rgba(38,23,23,.5),inset 0 1px 0 rgba(255,255,255,.85);
  backdrop-filter:blur(16px) saturate(145%);
  -webkit-backdrop-filter:blur(16px) saturate(145%);
  scroll-margin-top:28px;
  transition:transform .3s ease,box-shadow .3s ease;
}

main > section:not(.hero):hover{
  transform:translateY(-3px);
  box-shadow:0 30px 56px -28px rgba(38,23,23,.56),inset 0 1px 0 rgba(255,255,255,.85);
}

main > section:not(.hero) h2{
  margin:0 0 14px;
  font-family:'Nunito','DM Sans',system-ui,sans-serif;
  font-weight:800;
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.28;
  letter-spacing:-.2px;
}

main > section:not(.hero) h3{
  margin:26px 0 10px;
  font-family:'Nunito','DM Sans',system-ui,sans-serif;
  font-weight:800;
  font-size:20px;
  line-height:1.4;
}

main > section:not(.hero) h2 span,
main > section:not(.hero) h3 span{
  display:inline-block;
  background:linear-gradient(96deg,#d50026,#8b00ff);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:#8b00ff;
}

main > section:not(.hero) h2 span span,
main > section:not(.hero) h3 span span{
  -webkit-text-fill-color:transparent;
}

main > section:not(.hero) p{margin:0 0 14px}
main > section:not(.hero) p:last-child{margin-bottom:0}

main > section:not(.hero) ul,
main > section:not(.hero) ol{
  margin:0 0 16px;
  padding-left:1.25em;
}

main > section:not(.hero) li{margin:0 0 8px}
main > section:not(.hero) li::marker{color:#8b00ff}

main > section:not(.hero) strong{color:#b30024}
main > section:not(.hero) a{color:#8b00ff;text-decoration-thickness:1px;text-underline-offset:3px}

main > section:not(.hero) figure{
  margin:20px 0;
  padding:10px;
  border-radius:22px;
  background:rgba(255,255,255,.45);
  border:1px solid rgba(255,255,255,.8);
}

main > section:not(.hero) aside{
  margin:20px 0;
  padding:16px 18px;
  border-radius:20px;
  background:rgba(255,0,0,.06);
  border-left:4px solid rgba(139,0,255,.55);
}

main > section:not(.hero) img{
  display:block;
  width:100%;
  height:auto;
  border-radius:16px;
}

main > section:not(.hero) blockquote{
  margin:18px 0;
  padding:12px 18px;
  border-radius:18px;
  background:rgba(255,255,255,.5);
  border-left:4px solid #ff0000;
}

main > section:not(.hero) blockquote p:last-child{margin-bottom:0}

/* ---------- 页脚 ---------- */
footer{
  max-width:1000px;
  margin:56px auto 0;
  padding:38px 34px 28px;
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr 1fr;
  gap:26px;
  border-radius:28px 28px 0 0;
  background:rgba(255,255,255,.5);
  border:1px solid rgba(255,255,255,.74);
  border-bottom:0;
  box-shadow:0 -18px 50px -34px rgba(38,23,23,.55),inset 0 1px 0 rgba(255,255,255,.85);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}

.foot-brand{margin:0}

.foot-name{
  margin:0 0 12px;
  font-family:'Nunito',system-ui,sans-serif;
  font-weight:900;
  font-size:19px;
  letter-spacing:.3px;
}

.foot-dot{
  display:block;
  width:52px;height:52px;
  border-radius:18px;
  background:radial-gradient(circle at 32% 26%,#ff9a78,#ff0000 58%,#8b00ff 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.7),0 14px 26px -16px rgba(139,0,255,.9);
}

footer dl{margin:0}

footer dt{
  margin:0 0 10px;
  font-weight:800;
  font-size:16px;
  letter-spacing:.06em;
  color:rgba(38,23,23,.55);
}

footer dd{
  margin:0 0 4px;
}

footer dd a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:2px 6px;
  border-radius:12px;
  color:#261717;
  font-weight:700;
  text-decoration:none;
  transition:background .2s ease,color .2s ease;
}

footer dd a:hover,
footer dd a:focus-visible{
  background:rgba(255,255,255,.7);
  color:#8b00ff;
  outline:none;
}

.foot-legal{
  grid-column:1/-1;
  margin-top:12px;
  padding-top:16px;
  border-top:1px solid rgba(255,255,255,.78);
  text-align:center;
  font-size:15px;
  color:rgba(38,23,23,.7);
}

.foot-legal p{margin:0 0 4px}
.foot-host{font-size:15px;color:rgba(38,23,23,.5)}

/* ---------- 滚动显现 ---------- */
.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .62s ease,transform .62s cubic-bezier(.2,.8,.3,1);
}

.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .hero-jump:hover,
  main > section:not(.hero):hover,
  .site-rail nav a:hover{transform:none}
}

/* ---------- 窄屏 ---------- */
@media (max-width:1000px){
  body{padding-left:0}

  .site-rail{
    position:static;
    width:auto;
    padding:14px 16px 16px;
    gap:12px;
    border-right:0;
    border-bottom:1px solid rgba(255,255,255,.78);
    box-shadow:0 16px 40px -30px rgba(38,23,23,.5);
    overflow:visible;
  }

  .brand{min-height:40px;padding:2px 0}

  .site-rail nav{gap:8px}

  .site-rail nav p{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:center;
    gap:6px;
  }

  .grp{padding:0 4px 0 0;font-size:14px}

  .site-rail nav a{
    min-height:40px;
    padding:6px 12px;
    font-size:16px;
    background:rgba(255,255,255,.55);
    border-color:rgba(255,255,255,.8);
  }

  .site-rail nav a:hover{transform:none}

  main{max-width:none;padding:0 16px 20px}

  .hero{
    grid-template-columns:1fr;
    gap:22px;
    min-height:0;
    padding:26px 0 18px;
  }

  .hero-giant{
    left:auto;
    right:8px;
    top:0;
    font-size:104px;
    opacity:.85;
  }

  .hero-copy{grid-column:1;order:1;text-align:left}
  .hero-art{grid-column:1;order:2;padding:10px;border-radius:24px}

  .hero-copy h1{font-size:clamp(27px,7.6vw,36px)}
  .hero-lead{margin:0 0 20px;max-width:100%}

  main > section:not(.hero){
    padding:22px 18px;
    border-radius:22px;
    margin-bottom:18px;
    scroll-margin-top:14px;
  }

  main > section:not(.hero):hover{transform:none}

  footer{
    grid-template-columns:1fr 1fr;
    gap:18px;
    padding:26px 18px 22px;
    border-radius:24px 24px 0 0;
    margin-top:36px;
  }

  .foot-brand{grid-column:1/-1}
  .foot-dot{width:44px;height:44px;border-radius:15px}
}

@media (max-width:420px){
  footer{grid-template-columns:1fr}
}

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