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

:root{
  --mint:#99ffcc;
  --neon:#00ff41;
  --ink:#001e3c;
  --night:#001227;
  --paper:#f0fff9;
  --line:rgba(153,255,204,.2);
  --radius:28px;
  --ease:cubic-bezier(.22,.7,.3,1);
}

*{box-sizing:border-box}

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

body{
  margin:0;
  overflow-x:hidden;
  background:var(--night);
  color:var(--paper);
  font-family:'Raleway',system-ui,-apple-system,'Segoe UI','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.78;
  font-weight:400;
}

body::before{
  content:'';
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(60vw 55vh at 90% -10%,rgba(0,255,65,.17),transparent 70%),
    radial-gradient(58vw 52vh at -10% 104%,rgba(153,255,204,.14),transparent 72%),
    linear-gradient(180deg,#001e3c 0%,#001227 60%,#000f1d 100%);
}

h1,h2,h3,h4{
  font-family:'Lora',Georgia,'Songti SC',serif;
  font-weight:600;
  letter-spacing:.01em;
}

p{margin:0 0 16px}
a{color:inherit}
img{max-width:100%;height:auto}

.sr{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:3px;
  border-radius:10px;
}

@keyframes breathe{
  0%,100%{transform:scale(1) rotate(0deg)}
  50%{transform:scale(1.15) rotate(8deg)}
}

@keyframes drift{
  0%,100%{transform:translate3d(0,0,0) scale(1)}
  50%{transform:translate3d(0,-14px,0) scale(1.06)}
}

/* 页头 */

.top{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(0,18,39,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}

.top-in{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  max-width:1180px;
  margin:0 auto;
  padding:8px 20px;
}

.brand,
.mark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  text-decoration:none;
  color:var(--paper);
  font-family:'Lora',Georgia,serif;
  font-size:1.04rem;
  letter-spacing:.02em;
}

.dot{
  flex:0 0 auto;
  width:13px;height:13px;
  border-radius:50%;
  background:radial-gradient(circle at 32% 30%,var(--mint),var(--neon) 70%);
  box-shadow:0 0 16px rgba(0,255,65,.6);
  animation:breathe 7s ease-in-out infinite;
}

.menu-btn{
  min-height:44px;
  padding:0 20px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--mint);
  font:inherit;
  font-size:.95rem;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .35s var(--ease),color .35s var(--ease);
}

.menu-btn:hover{border-color:rgba(0,255,65,.62);color:var(--neon)}

.primary{
  display:none;
  background:rgba(0,20,42,.96);
  border-bottom:1px solid var(--line);
}

.primary.open{display:block}

.mgroup{
  padding:10px 20px 14px;
  border-top:1px dashed rgba(153,255,204,.14);
}

.mgroup:first-child{border-top:0}

.mlabel{
  margin:0 0 6px;
  font-size:.84rem;
  letter-spacing:.26em;
  color:rgba(153,255,204,.62);
}

.primary a{
  display:block;
  min-height:46px;
  line-height:46px;
  text-decoration:none;
  color:var(--mint);
  font-size:1rem;
  border-bottom:1px solid rgba(153,255,204,.09);
  transition:color .3s var(--ease);
}

.primary a:hover{color:var(--neon)}

/* 头图 */

.hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  min-height:48vh;
  max-width:1180px;
  margin:0 auto;
  padding:44px 20px 40px;
}

.hero-in{
  position:relative;
  z-index:2;
  text-align:right;
  max-width:820px;
}

.hero h1{
  margin:0 0 16px;
  font-size:clamp(2rem,7vw,4rem);
  line-height:1.16;
  color:#fff;
  text-shadow:0 0 44px rgba(0,255,65,.3);
}

.hero .lead{
  margin:0;
  font-size:1rem;
  line-height:1.7;
  color:rgba(240,255,249,.76);
}

.hero-num{
  position:absolute;
  left:-.06em;
  bottom:-.2em;
  z-index:0;
  font-family:'Lora',Georgia,serif;
  font-size:clamp(8rem,30vw,20rem);
  line-height:.78;
  color:transparent;
  -webkit-text-stroke:1px rgba(0,255,65,.24);
  user-select:none;
  will-change:transform;
}

.blob{
  position:absolute;
  z-index:0;
  pointer-events:none;
  filter:blur(42px);
  opacity:.55;
  border-radius:60% 40% 55% 45%/45% 55% 40% 60%;
  animation:drift 15s ease-in-out infinite;
}

.b1{
  width:260px;height:260px;
  right:-70px;top:4%;
  background:radial-gradient(circle at 42% 42%,rgba(0,255,65,.6),rgba(0,18,39,0) 72%);
}

.b2{
  width:220px;height:220px;
  left:0;bottom:0;
  background:radial-gradient(circle at 50% 50%,rgba(153,255,204,.5),rgba(0,18,39,0) 72%);
  animation-delay:-7s;
}

/* 正文骨架 */

.wrap{
  max-width:1180px;
  margin:0 auto;
  padding:0 20px;
}

.body{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
  padding-top:34px;
}

.prose{min-width:0}

.prose>h1{
  margin:0 0 12px;
  font-size:clamp(1.85rem,5vw,2.7rem);
  line-height:1.2;
  color:#fff;
}

.prose>.lead{
  margin:0 0 24px;
  color:rgba(240,255,249,.76);
}

.prose>div{
  position:relative;
  margin:0 0 26px;
  padding:32px 20px;
  scroll-margin-top:150px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(155deg,rgba(0,255,65,.06),rgba(153,255,204,.028) 58%,rgba(0,18,39,.22));
  box-shadow:0 20px 50px rgba(0,8,20,.48);
  transition:border-color .5s var(--ease),box-shadow .5s var(--ease),transform .5s var(--ease);
}

.prose>div::before{
  content:'';
  position:absolute;
  top:-1px;left:26px;
  width:64px;height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--neon),rgba(0,255,65,0));
}

.prose>div:hover{
  border-color:rgba(0,255,65,.4);
  box-shadow:0 26px 62px rgba(0,255,65,.12);
  transform:translateY(-2px);
}

.prose>div:last-child{margin-bottom:0}

.prose h2{
  margin:0 0 14px;
  font-size:clamp(1.4rem,3vw,1.9rem);
  line-height:1.3;
  color:#fff;
}

.prose h3{
  margin:24px 0 10px;
  font-size:1.18rem;
  line-height:1.4;
  color:var(--mint);
}

.prose p{line-height:1.9;color:rgba(240,255,249,.9)}
.prose strong{color:var(--mint)}

.prose ul,
.prose ol{
  margin:0 0 16px;
  padding-left:1.35em;
  line-height:1.85;
}

.prose li{margin:0 0 8px}

.prose a{color:var(--neon)}
.prose a:hover{color:var(--mint)}

.prose blockquote{
  margin:0 0 18px;
  padding:6px 0 6px 18px;
  border-left:3px solid var(--neon);
  color:rgba(240,255,249,.84);
}

.prose table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:0 0 18px;
}

.prose th,
.prose td{
  border:1px solid var(--line);
  padding:10px 12px;
  text-align:left;
}

.prose img{border-radius:20px}
.prose div>:last-child{margin-bottom:0}

/* 侧栏 */

.rail{
  align-self:start;
  padding:22px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(0,255,65,.046);
  box-shadow:0 20px 50px rgba(0,8,20,.48);
}

.rail h2{
  margin:0 0 6px;
  font-size:1.05rem;
  line-height:1.45;
  color:var(--mint);
}

.rail .subtitle{
  margin:0 0 12px;
  font-size:.86rem;
  letter-spacing:.28em;
  color:rgba(153,255,204,.62);
}

.rail ol{
  list-style:none;
  margin:0;
  padding:0;
  counter-reset:railc;
}

.rail li{
  counter-increment:railc;
  border-top:1px solid rgba(153,255,204,.13);
}

.rail li a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:46px;
  text-decoration:none;
  color:rgba(240,255,249,.84);
  font-size:.96rem;
  transition:color .3s var(--ease),padding-left .3s var(--ease);
}

.rail li a::before{
  content:counter(railc,decimal-leading-zero);
  font-size:.74rem;
  letter-spacing:.08em;
  color:rgba(0,255,65,.72);
}

.rail li a:hover,
.rail li a.on{
  color:var(--mint);
  padding-left:4px;
}

/* 页脚 */

footer{
  position:relative;
  overflow:hidden;
  margin-top:56px;
  padding:44px 20px 28px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,255,65,.07),rgba(0,15,29,.95));
}

.f1{
  width:300px;height:300px;
  right:-90px;bottom:-110px;
  opacity:.35;
  background:radial-gradient(circle at 50% 50%,rgba(0,255,65,.55),rgba(0,15,29,0) 72%);
}

.foot-grid{
  position:relative;
  z-index:1;
  max-width:1180px;
  margin:0 auto;
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:26px;
}

.foot-brand address{
  margin:10px 0 0;
  font-style:normal;
  font-family:'Lora',Georgia,serif;
  font-size:1.1rem;
  color:var(--mint);
}

.foot-list{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:2px 20px;
  margin:10px 0 0;
  padding:0;
}

.foot-list a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  text-decoration:none;
  color:rgba(240,255,249,.82);
  font-size:.96rem;
  transition:color .3s var(--ease);
}

.foot-list a:hover{color:var(--neon)}

.foot-nav dl{
  margin:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0 18px;
}

.foot-nav dt{
  grid-column:1/-1;
  margin:14px 0 4px;
  font-size:.84rem;
  letter-spacing:.26em;
  color:rgba(153,255,204,.62);
}

.foot-nav dt:first-child{margin-top:0}
.foot-nav dd{margin:0}

.foot-nav dd a{
  display:flex;
  align-items:center;
  min-height:44px;
  text-decoration:none;
  color:rgba(240,255,249,.82);
  font-size:.96rem;
  border-bottom:1px solid rgba(153,255,204,.12);
  transition:color .3s var(--ease);
}

.foot-nav dd a:hover{color:var(--neon)}

.foot-form{
  position:relative;
  z-index:1;
  max-width:1180px;
  margin:30px auto 0;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.foot-form input{
  flex:1 1 200px;
  min-height:48px;
  padding:0 20px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(0,18,39,.72);
  color:var(--paper);
  font:inherit;
  font-size:1rem;
}

.foot-form input::placeholder{color:rgba(240,255,249,.5)}

.foot-form button{
  min-height:48px;
  padding:0 30px;
  border:0;
  border-radius:999px;
  background:linear-gradient(120deg,var(--mint),var(--neon));
  color:#00240f;
  font:inherit;
  font-size:1rem;
  font-weight:600;
  letter-spacing:.1em;
  cursor:pointer;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}

.foot-form button:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(0,255,65,.3);
}

.copy,
.note{
  position:relative;
  z-index:1;
  max-width:1180px;
  margin:26px auto 0;
  text-align:center;
  font-size:.9rem;
  line-height:1.7;
  color:rgba(240,255,249,.62);
}

.note{
  margin:4px auto 0;
  font-size:.86rem;
  color:rgba(153,255,204,.5);
}

/* 断点 */

@media (min-width:700px){
  .prose>div{padding:40px 38px}
  .foot-grid{grid-template-columns:1.15fr 1fr;gap:36px}
}

@media (min-width:920px){
  .menu-btn{display:none}

  .primary{
    display:flex;
    align-items:flex-end;
    gap:34px;
    padding:0 max(20px,calc((100% - 1180px) / 2)) 10px;
    background:transparent;
    border-bottom:0;
  }

  .mgroup{
    display:flex;
    align-items:baseline;
    gap:20px;
    padding:0;
    border-top:0;
  }

  .mlabel{margin:0 2px 0 0}

  .primary a{
    position:relative;
    display:inline-flex;
    align-items:center;
    min-height:42px;
    line-height:1.4;
    border-bottom:0;
  }

  .primary a::after{
    content:'';
    position:absolute;
    left:0;right:0;bottom:8px;
    height:1px;
    background:var(--neon);
    transform:scaleX(0);
    transform-origin:right center;
    transition:transform .4s var(--ease);
  }

  .primary a:hover::after{transform:scaleX(1)}

  .hero{
    min-height:70vh;
    padding:92px 20px 68px;
  }

  .body{
    grid-template-columns:minmax(0,1fr) 272px;
    gap:44px;
    padding-top:52px;
  }

  .rail{
    position:sticky;
    top:126px;
  }
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}

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