@import url('https://fonts.googleapis.com/css2?family=Cormorant+Infant:wght@300;400;500;600;700&family=Great+Vibes&display=swap');

:root{
  --ink:#001e3c;
  --ink0:#00121f;
  --ink1:#012136;
  --ink2:#042e4a;
  --mint:#99ffcc;
  --neon:#00ff41;
  --paper:#f0fff8;
  --body:#d7eefb;
  --line:rgba(153,255,204,.2);
  --line2:rgba(153,255,204,.36);
  --serif:'Cormorant Infant','Songti SC','Noto Serif SC',Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
}

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

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

html.menu-open,html.menu-open body{overflow:hidden}

body{
  margin:0;
  background:var(--ink0);
  color:var(--body);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:var(--mint)}
p{margin:0 0 1.05em}
h1,h2,h3{font-family:var(--serif);font-weight:500;line-height:1.25;color:var(--paper)}

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

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;
  top:0;
  z-index:70;
  background:linear-gradient(180deg,rgba(0,18,31,.97),rgba(0,18,31,.84));
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}

.brandrow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:9px 15px;
}

.mark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  text-decoration:none;
  color:var(--mint);
}

.pulse{
  width:13px;
  height:13px;
  background:var(--neon);
  clip-path:polygon(50% 0,80% 20%,100% 55%,70% 92%,30% 100%,0 70%,6% 28%);
  animation:breathe 5.5s ease-in-out infinite;
  flex:0 0 auto;
}

.mname{
  font-family:var(--serif);
  font-size:22px;
  letter-spacing:.06em;
}

.act{display:flex;align-items:center;gap:9px}

.pill{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 16px;
  background:var(--neon);
  color:#00240f;
  font-size:16px;
  font-weight:700;
  letter-spacing:.05em;
  text-decoration:none;
}

.burger{
  width:48px;
  height:44px;
  padding:0;
  border:1px solid var(--line2);
  background:transparent;
  display:grid;
  place-content:center;
  gap:6px;
  cursor:pointer;
}
.burger span{
  display:block;
  width:22px;
  height:2px;
  background:var(--mint);
  transition:transform .3s ease;
}
html.menu-open .burger span:first-child{transform:translateY(4px) rotate(45deg)}
html.menu-open .burger span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- 全屏菜单 ---------- */
.sheet{
  position:fixed;
  inset:0;
  z-index:60;
  overflow-y:auto;
  padding:110px 18px 44px;
  background:
    radial-gradient(circle at 18% 8%,#064a37 0,rgba(0,18,31,0) 58%),
    radial-gradient(circle at 88% 82%,#04406b 0,rgba(0,18,31,0) 62%),
    var(--ink0);
  opacity:0;
  visibility:hidden;
  transition:opacity .34s ease,visibility .34s ease;
}
html.menu-open .sheet{opacity:1;visibility:visible}

.sheet nav{max-width:600px;margin:0 auto}
.sheetlist{list-style:none;margin:0;padding:0}
.sheetlist li{border-bottom:1px solid var(--line)}

.sheetlist a{
  display:flex;
  align-items:center;
  gap:14px;
  min-height:58px;
  padding:11px 4px;
  text-decoration:none;
  color:var(--paper);
  font-family:var(--serif);
  font-size:21px;
  letter-spacing:.02em;
  transition:color .2s ease,transform .3s ease;
}
.sheetlist li:nth-child(1) a{transition-delay:0ms}
.sheetlist a:hover,html.menu-open .sheetlist a{transform:none}
.sheetlist a:hover{color:var(--neon)}
html.menu-open .sheetlist a{animation:slidein .5s both}
html.menu-open .sheetlist li:nth-child(2) a{animation-delay:.05s}
html.menu-open .sheetlist li:nth-child(3) a{animation-delay:.1s}
html.menu-open .sheetlist li:nth-child(4) a{animation-delay:.15s}
html.menu-open .sheetlist li:nth-child(5) a{animation-delay:.2s}
html.menu-open .sheetlist li:nth-child(6) a{animation-delay:.25s}
html.menu-open .sheetlist li:nth-child(7) a{animation-delay:.3s}

.idx{
  font-family:var(--sans);
  font-size:13px;
  color:var(--neon);
  letter-spacing:.14em;
  min-width:26px;
}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;
  min-height:70vh;
  display:grid;
  place-items:center;
  padding:56px 18px 78px;
  text-align:center;
  overflow:hidden;
  background:radial-gradient(ellipse at 50% 0,#054b3a 0,var(--ink0) 72%);
  clip-path:ellipse(155% 100% at 50% 0);
}

.heromedia{position:absolute;inset:0;z-index:0}
.heromedia img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.4;
  filter:saturate(1.15) contrast(1.05);
  animation:breathePic 16s ease-in-out infinite;
}

.heroblobs{position:absolute;inset:0;z-index:1;pointer-events:none;filter:blur(38px);opacity:.55}
.heroblobs i{position:absolute;display:block}
.heroblobs i:nth-child(1){
  width:270px;height:270px;left:-70px;top:16%;
  background:var(--mint);
  clip-path:polygon(50% 0,80% 18%,100% 54%,70% 92%,30% 100%,0 70%,5% 30%);
  animation:breathe 9s ease-in-out infinite;
}
.heroblobs i:nth-child(2){
  width:210px;height:210px;right:-50px;top:6%;
  background:var(--neon);
  clip-path:polygon(40% 0,86% 10%,100% 46%,80% 86%,34% 100%,0 64%,10% 24%);
  animation:breathe 11s ease-in-out infinite;
  animation-delay:-4s;
}

.heroin{position:relative;z-index:2;max-width:820px}

.hero h1{
  margin:0;
  font-size:clamp(2rem,7.4vw,4.1rem);
  letter-spacing:.02em;
  color:#f4fffa;
  text-shadow:0 0 34px rgba(0,255,65,.24);
}

.cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  margin-top:22px;
  padding:0 26px;
  background:var(--mint);
  color:#00220f;
  font-weight:700;
  font-size:16px;
  letter-spacing:.08em;
  text-decoration:none;
  transition:background .25s ease,transform .25s ease;
}
.cta:hover{background:var(--neon);transform:translateY(-2px)}

/* ---------- 布局 ---------- */
.wrap{
  display:grid;
  gap:30px;
  max-width:1180px;
  margin:0 auto;
  padding:44px 15px 60px;
}

@media (min-width:900px){
  .wrap{
    grid-template-columns:minmax(0,1fr) 268px;
    align-items:start;
    gap:42px;
    padding:70px 26px 84px;
  }
}

.flow{min-width:0}

article > section{
  background:var(--ink1);
  padding:24px 17px;
  margin:0 0 16px;
  scroll-margin-top:100px;
}
article > section:last-child{margin-bottom:0}

@media (min-width:640px){
  article > section{padding:32px 30px;margin-bottom:22px}
}

article h2{
  font-size:clamp(1.5rem,3.4vw,2.05rem);
  margin:0 0 4px;
  color:var(--mint);
}
article h3{
  font-size:1.22rem;
  margin:1.5em 0 .4em;
  color:var(--mint);
}

hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:12px 0 18px;
}

article ul,article ol{padding-left:1.2em;margin:0 0 1.1em}
article li{margin:.35em 0}
article a{color:var(--neon);text-decoration:none;border-bottom:1px solid rgba(0,255,65,.35)}
article a:hover{border-bottom-color:var(--neon)}
article blockquote{
  margin:0 0 1.1em;
  padding:12px 16px;
  border-left:3px solid var(--mint);
  background:rgba(153,255,204,.06);
  color:#e6fff4;
}
article strong{color:var(--paper)}
article time{color:var(--mint);font-variant-numeric:tabular-nums}

/* ---------- 侧栏 ---------- */
.side{
  background:var(--ink1);
  padding:20px 17px 16px;
  align-self:start;
}
@media (min-width:900px){
  .side{position:sticky;top:88px;padding:22px 20px}
}

.side h2{
  font-size:1.32rem;
  margin:0;
  color:var(--mint);
}
.side hr{margin:10px 0 12px}

.sidelist{list-style:none;margin:0;padding:0;display:grid}
.sidelist a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:6px 2px;
  font-size:16px;
  text-decoration:none;
  color:#cfeeff;
  border-bottom:1px dashed rgba(153,255,204,.16);
  transition:color .2s ease,padding-left .2s ease;
}
.sidelist a:hover{color:var(--neon);padding-left:6px}
.sidelist li:last-child a{border-bottom:0}

/* ---------- 页脚 ---------- */
.foot{
  display:grid;
  gap:26px;
  padding:42px 15px 0;
  background:#00121f;
  border-top:1px solid var(--line);
}

@media (min-width:760px){
  .foot{grid-template-columns:1.5fr 1fr 1fr auto;gap:34px;padding:52px 26px 0}
}

.fs{min-width:0}
.fs h2{font-size:1.1rem;margin:0;color:var(--mint)}
.fs hr{margin:8px 0 12px}

.fbrand{
  font-family:var(--serif);
  font-size:22px;
  color:var(--mint);
  margin:0 0 .5em;
  letter-spacing:.05em;
}
.fdesc{color:#a9c8dc;font-size:16px;margin:0}

.fnav{list-style:none;margin:0;padding:0;display:grid}
.fnav a{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:42px;
  padding:5px 0;
  font-size:16px;
  text-decoration:none;
  color:#cfeeff;
}
.fnav a:hover{color:var(--neon)}

.fkw{margin:0;color:#a9c8dc;font-size:16px}

.fs-top{display:flex;align-items:flex-start}

.toup{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 18px;
  border:1px solid var(--line2);
  color:var(--mint);
  font-size:16px;
  text-decoration:none;
  transition:background .25s ease,color .25s ease;
}
.toup:hover{background:var(--mint);color:#00220f}

.bar{
  grid-column:1/-1;
  border-top:1px solid var(--line);
  margin-top:6px;
  padding:16px 0 22px;
  text-align:center;
}
.bar p{margin:0;font-size:15px;color:#8fb2c8}

/* ---------- 动效 ---------- */
@keyframes breathe{
  0%,100%{transform:scale(.9);opacity:.45}
  50%{transform:scale(1.14);opacity:.85}
}
@keyframes breathePic{
  0%,100%{transform:scale(1)}
  50%{transform:scale(1.07)}
}
@keyframes slidein{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:none}
}

.reveal{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .7s ease,transform .75s cubic-bezier(.22,1,.36,1);
}
.reveal.is-in{opacity:1;transform:none}

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

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