@import url('https://fonts.googleapis.com/css2?family=Kalam:wght@400;700&family=Patrick+Hand&display=swap');

:root{
  --mint:#99ffcc;
  --neon:#00ff41;
  --ink:#001e3c;
  --ink-2:#06304f;
  --ink-3:#0a4368;
  --fg:#e0f9ef;
  --dim:#a6cabf;
  --line:rgba(153,255,204,.22);
  --card:rgba(6,48,79,.72);
  --r:18px;
  --font:"Kalam","Patrick Hand","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

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

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

body{
  margin:0;
  padding-top:104px;
  background:var(--ink);
  color:var(--fg);
  font-family:var(--font);
  font-size:17px;
  line-height:1.7;
  overflow-x:hidden;
  position:relative;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:radial-gradient(rgba(153,255,204,.16) 1px, transparent 1.5px);
  background-size:26px 26px;
  opacity:.55;
  animation:breatheDots 9s ease-in-out infinite;
}

@keyframes breatheDots{
  0%,100%{opacity:.4}
  50%{opacity:.68}
}

.blob{
  position:fixed;
  z-index:0;
  pointer-events:none;
  filter:blur(38px);
  opacity:.4;
  background:linear-gradient(140deg,var(--neon),var(--mint));
}
.blob-a{
  width:320px;height:300px;
  top:14vh;left:-90px;
  border-radius:60% 40% 55% 45% / 50% 60% 40% 50%;
  animation:morphA 16s ease-in-out infinite;
}
.blob-b{
  width:260px;height:280px;
  bottom:6vh;right:-80px;
  border-radius:45% 55% 40% 60% / 60% 45% 55% 40%;
  opacity:.28;
  animation:morphB 21s ease-in-out infinite;
}
@keyframes morphA{
  0%,100%{border-radius:60% 40% 55% 45% / 50% 60% 40% 50%;transform:translate3d(0,0,0) scale(1)}
  50%{border-radius:40% 60% 45% 55% / 60% 40% 60% 40%;transform:translate3d(14px,-18px,0) scale(1.08)}
}
@keyframes morphB{
  0%,100%{border-radius:45% 55% 40% 60% / 60% 45% 55% 40%;transform:translate3d(0,0,0) scale(1)}
  50%{border-radius:58% 42% 62% 38% / 42% 58% 42% 58%;transform:translate3d(-16px,12px,0) scale(1.06)}
}

/* ---------- 顶栏 ---------- */
.dock{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:56px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 10px;
  background:rgba(0,22,44,.9);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.tgl{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.tgl-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--mint);
  font-size:16px;
  cursor:pointer;
  user-select:none;
  background:rgba(153,255,204,.06);
}
.tgl-btn:hover{background:rgba(153,255,204,.16)}
.bars{
  display:block;
  width:16px;height:2px;
  border-radius:2px;
  background:var(--mint);
  box-shadow:0 5px 0 var(--mint),0 -5px 0 var(--mint);
}
.brand{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 8px;
  color:#fff;
  font-size:1.12rem;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  white-space:nowrap;
}
.brand::after{
  content:"";
  position:absolute;
  left:8px;right:8px;bottom:6px;
  height:3px;
  border-radius:3px;
  background:linear-gradient(90deg,var(--neon),var(--mint));
  opacity:.75;
}
.dock-end{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 12px;
  color:var(--dim);
  font-size:16px;
  text-decoration:none;
  white-space:nowrap;
}
.dock-end:hover{color:var(--mint)}

/* ---------- 全屏遮罩菜单 ---------- */
.veil{
  position:fixed;
  inset:0;
  z-index:55;
  padding:92px 20px 34px;
  overflow-y:auto;
  background:rgba(0,16,32,.97);
  opacity:0;
  transform:translateY(-12px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.tgl:checked ~ .veil{opacity:1;transform:none;pointer-events:auto}
.veil-list{
  list-style:none;
  margin:0 auto;
  padding:0;
  max-width:620px;
}
.veil-list li + li{border-top:1px dashed var(--line)}
.veil-list a{
  display:flex;
  align-items:baseline;
  gap:14px;
  min-height:52px;
  padding:13px 6px;
  color:var(--mint);
  font-size:1.16rem;
  text-decoration:none;
}
.veil-list a:hover{color:var(--neon)}
.veil-list i{
  font-style:normal;
  font-size:.86rem;
  color:var(--neon);
  min-width:2.4em;
  letter-spacing:.1em;
}

/* ---------- 粘性锚点条 ---------- */
.strip{
  position:fixed;
  top:56px;left:0;right:0;
  z-index:50;
  height:48px;
  background:rgba(0,22,44,.86);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:none;
}
.strip::-webkit-scrollbar{height:0}
.strip ul{
  display:flex;
  align-items:center;
  gap:6px;
  width:max-content;
  min-height:48px;
  margin:0;
  padding:4px 10px;
  list-style:none;
}
.strip a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 13px;
  border:1px solid transparent;
  border-radius:999px;
  color:var(--mint);
  font-size:16px;
  white-space:nowrap;
  text-decoration:none;
}
.strip a:hover,.strip a:focus-visible{background:rgba(153,255,204,.14);border-color:var(--line)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  z-index:1;
  min-height:45vh;
  display:grid;
  place-items:center;
  padding:30px 18px 52px;
  text-align:center;
  overflow:hidden;
  border-radius:0 0 46% 46% / 0 0 11vh 11vh;
  background:radial-gradient(130% 92% at 50% 0%,var(--ink-3),var(--ink-2) 46%,var(--ink) 78%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background-image:radial-gradient(rgba(0,255,65,.22) 1px, transparent 1.6px);
  background-size:18px 18px;
  opacity:.5;
}
.hero-media{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero-media img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
  opacity:.36;
  filter:saturate(1.2) contrast(1.05);
  will-change:transform;
}
.hero-in{position:relative;z-index:2;max-width:760px}
.hero h1{
  margin:0 0 .4em;
  font-size:clamp(2rem,7.6vw,3.5rem);
  line-height:1.24;
  font-weight:700;
  letter-spacing:.02em;
  color:#fff;
  text-shadow:0 2px 0 rgba(0,30,60,.6),0 0 26px rgba(0,255,65,.35);
}
.hero-desc{
  margin:0 auto;
  max-width:34em;
  font-size:1.02rem;
  line-height:1.65;
  color:var(--mint);
}

/* ---------- 布局 ---------- */
main{position:relative;z-index:1}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}
.cols{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  padding:24px 0 12px;
}

/* ---------- 正文 ---------- */
.prose{min-width:0}
.prose section{
  position:relative;
  padding:38px 0;
  scroll-margin-top:118px;
}
.prose section + section{border-top:1px dashed var(--line)}
.prose h2{
  margin:.1em 0 .55em;
  font-size:clamp(1.35rem,4.6vw,1.95rem);
  line-height:1.32;
  font-weight:700;
  color:var(--mint);
  letter-spacing:.01em;
}
.prose h3{
  margin:1.2em 0 .5em;
  font-size:1.16rem;
  color:var(--neon);
}
.prose h2 + hr,.prose h3 + hr{margin:-.15em 0 1em}
.prose hr{
  border:0;
  height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(153,255,204,.05));
  margin:1.4em 0;
}
.prose p{margin:0 0 1.05em}
.prose ul,.prose ol{margin:0 0 1.1em;padding-left:1.25em}
.prose li{margin:.4em 0}
.prose li::marker{color:var(--neon)}
.prose a{
  color:var(--neon);
  text-decoration:none;
  border-bottom:1px dashed rgba(0,255,65,.6);
}
.prose a:hover{background:rgba(0,255,65,.12)}
.prose strong{color:#fff}
.prose blockquote{
  margin:1.3em 0;
  padding:.7em 1em;
  border-left:3px solid var(--mint);
  border-radius:0 var(--r) var(--r) 0;
  background:rgba(153,255,204,.08);
  color:var(--mint);
}
.prose img{max-width:100%;height:auto;border-radius:var(--r);display:block;margin:1.2em 0}
.prose figure{margin:1.3em 0}
.prose figcaption{font-size:.95rem;color:var(--dim)}

/* ---------- 右侧栏 ---------- */
.rail{
  padding:18px;
  border:1px dashed var(--line);
  border-radius:var(--r);
  background:var(--card);
  box-shadow:0 14px 30px rgba(0,14,28,.34);
  align-self:start;
}
.rail h2{
  margin:0 0 .4em;
  font-size:1.02rem;
  letter-spacing:.22em;
  color:var(--mint);
  font-weight:700;
}
.rail hr{
  border:0;
  height:1px;
  margin:0 0 .6em;
  background:linear-gradient(90deg,var(--neon),transparent);
}
.rail-list{list-style:none;margin:0;padding:0}
.rail-list a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:4px 0;
  color:var(--fg);
  font-size:16px;
  line-height:1.4;
  text-decoration:none;
  border-bottom:1px solid rgba(153,255,204,.1);
}
.rail-list li:last-child a{border-bottom:0}
.rail-list a:hover{color:var(--neon)}

/* ---------- 页脚 ---------- */
footer{
  position:relative;
  z-index:1;
  margin-top:36px;
  padding-top:28px;
  border-top:1px solid var(--line);
  background:rgba(0,16,32,.72);
}
.foot{
  max-width:1080px;
  margin:0 auto;
  padding:0 18px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px 22px;
}
.foot address{
  font-style:normal;
  font-size:1.05rem;
  font-weight:700;
  color:#fff;
  letter-spacing:.06em;
}
.foot-note{margin:.3em 0 0;font-size:.95rem;color:var(--dim)}
.foot ul{list-style:none;margin:0;padding:0}
.foot a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:2px 0;
  color:var(--dim);
  font-size:16px;
  text-decoration:none;
}
.foot a:hover{color:var(--neon)}
.copy{
  margin:14px 0 0;
  padding:18px;
  text-align:center;
  font-size:.95rem;
  color:var(--dim);
  border-top:1px dashed var(--line);
}

/* ---------- 滚动揭示 ---------- */
.js .rev{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .rev.in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media (min-width:620px){
  body{font-size:18px}
  .hero{padding:38px 24px 60px}
}

@media (min-width:980px){
  .cols{grid-template-columns:minmax(0,1fr) 216px;gap:40px}
  .rail{position:sticky;top:118px}
  .prose section{padding:48px 0}
}

@media (min-width:1180px){
  .wrap,.foot{padding:0 26px}
}

@media (max-width:400px){
  .brand{font-size:1rem;letter-spacing:.04em}
  .dock-end{padding:0 8px;font-size:15px}
  .tgl-btn{padding:0 10px;font-size:15px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before,.blob{animation:none}
  .js .rev{opacity:1;transform:none;transition:none}
  .veil{transition:none}
}

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