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

:root{
  --ink:#001e3c;
  --deep:#00121f;
  --mint:#99ffcc;
  --neon:#00ff41;
  --paper:#eafff6;
  --body:#d3f1e5;
  --muted:#9cc5b7;
  --line:rgba(153,255,204,.16);
  --r:18px;
  --font:"Be Vietnam Pro","Noto Sans",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}

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

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

body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.72;
  color:var(--body);
  background:var(--ink);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:-12% -12% auto -12%;
  height:74vh;
  z-index:0;
  pointer-events:none;
  filter:blur(48px);
  background:
    radial-gradient(36% 48% at 18% 22%,rgba(0,255,65,.22),transparent 70%),
    radial-gradient(44% 56% at 82% 10%,rgba(153,255,204,.20),transparent 72%);
  animation:breathe 15s ease-in-out infinite;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.45;
  background-image:radial-gradient(circle,rgba(153,255,204,.16) 1.4px,transparent 1.5px);
  background-size:32px 32px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.15) 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),rgba(0,0,0,.15) 88%);
}

@keyframes breathe{
  0%,100%{transform:scale(1);opacity:.55}
  50%{transform:scale(1.14);opacity:.95}
}
@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-16px)}
}

.page{position:relative;z-index:1}

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

a{color:var(--neon)}
a:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:8px}

h1,h2,h3{color:var(--paper);line-height:1.2;letter-spacing:-.015em}

h2>span,h3>span{
  background:linear-gradient(transparent 66%,rgba(0,255,65,.28) 0);
  padding-bottom:2px;
}

.skip{
  position:absolute;
  left:14px;
  top:-60px;
  z-index:90;
  padding:10px 18px;
  min-height:44px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  background:var(--neon);
  color:#00281a;
  text-decoration:none;
  font-weight:600;
  transition:top .2s ease;
}
.skip:focus{top:12px}

/* 底部固定胶囊导航 */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,30,60,.45),rgba(0,18,31,.94));
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.dock-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:8px;
  max-width:1180px;
  margin:0 auto;
}
.dock-left,.dock-right{display:flex;gap:7px;align-items:center;flex-wrap:nowrap}
.dock-left{justify-self:end}
.dock-right{justify-self:start}

.pill{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 15px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(153,255,204,.06);
  color:#d7f0e6;
  font-size:16px;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .25s ease,background .25s ease,border-color .25s ease,color .25s ease;
}
.pill:hover{transform:translateY(-2px);background:rgba(0,255,65,.16);border-color:rgba(0,255,65,.5);color:var(--paper)}

.pill-cta{
  background:linear-gradient(120deg,var(--neon),var(--mint));
  border-color:transparent;
  color:#00281a;
  font-weight:600;
  box-shadow:0 14px 30px -18px var(--neon);
}

.dock-brand{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid rgba(153,255,204,.32);
  background:rgba(0,30,60,.6);
  color:var(--paper);
  font-weight:600;
  letter-spacing:.02em;
  text-decoration:none;
  white-space:nowrap;
}
.dock-brand img{width:24px;height:24px;border-radius:50%;object-fit:cover}

/* 首屏 */
.hero{
  position:relative;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:44px;
  align-items:center;
  min-height:100svh;
  max-width:1180px;
  margin:0 auto;
  padding:96px 20px 140px;
}
.hero::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:52px;
  width:100vw;
  height:9px;
  transform:translateX(-50%) skewX(-16deg);
  background:linear-gradient(90deg,transparent,var(--neon),var(--mint),transparent);
  opacity:.5;
  filter:blur(1px);
}
.hero h1{
  margin:0 0 .45em;
  font-size:clamp(2rem,5.2vw,3.5rem);
  font-weight:600;
  line-height:1.12;
}
.lede{
  margin:0 0 30px;
  max-width:46ch;
  color:var(--muted);
  font-size:17px;
}
.hero-go{
  display:inline-flex;
  align-items:center;
  min-height:50px;
  padding:0 28px;
  border-radius:999px;
  background:linear-gradient(120deg,var(--neon),var(--mint));
  color:#00281a;
  font-weight:600;
  text-decoration:none;
  box-shadow:0 22px 46px -22px var(--neon);
  transition:transform .25s ease;
}
.hero-go:hover{transform:translateY(-3px)}

.collage{
  position:relative;
  margin:0;
  aspect-ratio:5/5.2;
}
.shot{
  position:absolute;
  overflow:hidden;
  border-radius:var(--r);
  border:1px solid rgba(153,255,204,.24);
  background:linear-gradient(150deg,#0a4433,#01283a);
  box-shadow:0 40px 70px -40px #000;
}
.shot img{width:100%;height:100%;object-fit:cover}
.shot-a{
  width:64%;
  left:0;
  top:3%;
  aspect-ratio:3/4;
  animation:floaty 9s ease-in-out infinite;
  border-radius:26px 60px 26px 60px;
}
.shot-b{
  width:56%;
  right:0;
  bottom:2%;
  aspect-ratio:3/4;
  animation:floaty 12s ease-in-out infinite reverse;
  border-radius:60px 26px 60px 26px;
}

/* 主体两栏：左栏目录 */
.grid{
  position:relative;
  display:grid;
  grid-template-columns:252px minmax(0,1fr);
  gap:34px;
  align-items:start;
  max-width:1180px;
  margin:0 auto;
  padding:0 20px 40px;
}

.rail{
  position:sticky;
  top:24px;
  padding:18px 18px 20px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:rgba(0,52,80,.45);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 30px 60px -50px #000;
}
.rail-h{
  margin:0 0 10px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--mint);
}
.rail-h + .rail-h{margin-top:18px}
.rail-list{
  list-style:none;
  margin:0;
  padding:0;
}
.rail-list a{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:42px;
  padding:5px 0;
  color:#cfeee2;
  font-size:16px;
  text-decoration:none;
  border-bottom:1px dashed rgba(153,255,204,.16);
  transition:color .2s ease,padding-left .2s ease;
}
.rail-list a::before{
  content:"";
  width:7px;
  height:7px;
  flex:0 0 7px;
  border-radius:50%;
  background:rgba(153,255,204,.45);
  transition:background .2s ease,transform .2s ease;
}
.rail-list a:hover{color:var(--neon);padding-left:4px}
.rail-list a:hover::before{background:var(--neon);transform:scale(1.3)}
.rail-list a.on{color:var(--neon)}
.rail-list a.on::before{background:var(--neon)}
.rail-top{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 20px;
  border-radius:999px;
  border:1px solid rgba(153,255,204,.32);
  color:var(--mint);
  font-size:16px;
  text-decoration:none;
  transition:background .2s ease,color .2s ease;
}
.rail-top:hover{background:rgba(0,255,65,.16);color:var(--paper)}

/* 正文容器 */
.content{
  min-width:0;
  padding:6px 28px 30px;
  border-radius:24px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,48,76,.46),rgba(0,26,44,.26));
  box-shadow:0 50px 90px -70px #000;
}
.content > section{
  padding:30px 0 12px;
  border-top:1px solid var(--line);
}
.content > section:first-child{border-top:0;padding-top:22px}
.content > section:last-child{padding-bottom:6px}
.content h2{
  margin:0 0 .55em;
  font-size:clamp(1.4rem,3.1vw,1.95rem);
  font-weight:600;
}
.content h3{
  margin:1.5em 0 .5em;
  font-size:1.15rem;
  font-weight:600;
}
.content p{margin:0 0 1em}
.content ul,.content ol{margin:0 0 1.1em;padding-left:1.35em}
.content li{margin:0 0 .45em}
.content a{color:var(--neon);text-underline-offset:3px}
.content strong{color:var(--paper)}
.content blockquote{
  margin:1.2em 0;
  padding:14px 20px;
  border-left:3px solid var(--neon);
  border-radius:0 14px 14px 0;
  background:rgba(0,255,65,.07);
  color:#def7ec;
}
.content figure{
  margin:1.3em 0;
  padding:14px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:rgba(0,30,60,.4);
}
.content figure img{border-radius:12px}
.content figcaption{font-size:16px;color:var(--muted);margin-top:8px}
.content table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:16px}
.content th,.content td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.content th{background:rgba(153,255,204,.08);color:var(--paper)}

section[id]{scroll-margin-top:26px}

/* 页脚 */
.foot{
  position:relative;
  margin-top:76px;
  padding:60px 20px 132px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(0,48,76,.5),rgba(0,18,31,.96));
}

.foot-cta{
  position:relative;
  overflow:hidden;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  max-width:1180px;
  margin:0 auto 46px;
  padding:34px 30px;
  border-radius:24px;
  border:1px solid rgba(153,255,204,.3);
  background:linear-gradient(120deg,rgba(0,255,65,.2),rgba(153,255,204,.1));
}
.foot-cta::before{
  content:"";
  position:absolute;
  right:-90px;
  top:-150px;
  width:340px;
  height:340px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(0,255,65,.38),transparent 70%);
  filter:blur(28px);
  animation:breathe 12s ease-in-out infinite;
}
.foot-cta h2{
  position:relative;
  margin:0;
  font-size:clamp(1.5rem,3.6vw,2.15rem);
  font-weight:600;
}
.cta-pill{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:50px;
  padding:0 28px;
  border-radius:999px;
  background:linear-gradient(120deg,var(--neon),var(--mint));
  color:#00281a;
  font-weight:600;
  text-decoration:none;
  box-shadow:0 20px 40px -22px var(--neon);
  transition:transform .25s ease;
}
.cta-pill:hover{transform:translateY(-3px)}

.foot-cols{
  display:grid;
  grid-template-columns:1.15fr 1.6fr 1fr;
  gap:30px;
  max-width:1180px;
  margin:0 auto;
}
.foot-cols dl{margin:0}
.foot-cols dt{
  margin-bottom:9px;
  color:var(--mint);
  font-size:16px;
  font-weight:600;
  letter-spacing:.05em;
}
.foot-cols dd{
  margin:0 0 2px;
  color:var(--muted);
  font-size:16px;
}
.foot-cols dd a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:#d3efe4;
  font-size:16px;
  text-decoration:none;
  transition:color .2s ease;
}
.foot-cols dd a:hover{color:var(--neon)}

.copy{
  max-width:1180px;
  margin:44px auto 0;
  padding-top:20px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:16px;
}

/* 滚入动效 */
.rv{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1);
}
.rv.in{opacity:1;transform:none}

@media (max-width:960px){
  .hero{
    grid-template-columns:1fr;
    gap:30px;
    min-height:0;
    padding:88px 18px 46px;
  }
  .hero::after{bottom:20px;height:7px}
  .collage{aspect-ratio:16/12}
  .shot-a{width:56%;top:0;aspect-ratio:4/4.6}
  .shot-b{width:46%;bottom:0;aspect-ratio:4/4.6}

  .grid{grid-template-columns:1fr;gap:22px;padding:0 18px 26px}
  .rail{position:static;padding:16px}
  .content{padding:4px 18px 22px;border-radius:20px}

  .foot{padding:48px 18px 128px;margin-top:56px}
  .foot-cols{grid-template-columns:1fr;gap:22px}
  .foot-cta{padding:26px 22px}

  .dock{padding:8px 10px calc(8px + env(safe-area-inset-bottom))}
  .dock-inner{
    display:flex;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .dock-inner::-webkit-scrollbar{display:none}
  .dock-left,.dock-right{display:contents}
  .dock-brand{order:-1;flex:0 0 auto;min-height:42px;padding:0 14px;font-size:16px}
  .pill{flex:0 0 auto;min-height:42px;padding:0 14px}
}

@media (max-width:420px){
  body{font-size:16px}
  .hero h1{font-size:1.85rem}
  .hero-go,.cta-pill{width:100%;justify-content:center}
  .content{padding:4px 14px 18px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before,.foot-cta::before,.shot-a,.shot-b{animation:none}
  .rv{opacity:1;transform:none;transition:none}
  *{transition-duration:.01ms!important}
}

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