/* Harbor101 · 复古未来霓虹风格（深色背景 + 霓虹色） */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;800&family=Inter:wght@400;600&display=swap');
:root{
  --bg:#07061a; --bg2:#0e0b2e; --card:rgba(22,16,60,.62); --line:rgba(140,110,255,.28);
  --text:#ece9ff; --muted:#a59fd0;
  --pink:#ff2bd6; --cyan:#00f0ff; --violet:#8b5cff; --sun1:#ffd23f; --sun2:#ff2bd6;
  --display:"Orbitron","Inter","PingFang SC","Noto Sans SC",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;color:var(--text);background:
  radial-gradient(1200px 600px at 80% -10%,rgba(139,92,255,.25),transparent 60%),
  radial-gradient(900px 500px at -10% 30%,rgba(0,240,255,.12),transparent 60%),var(--bg);
  font:16px/1.75 "Inter",-apple-system,"PingFang SC","Noto Sans SC",sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--cyan);text-decoration:none}
a:hover{text-shadow:0 0 12px var(--cyan)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
html[data-lang="en"] [lang="zh"],html[data-lang="zh"] [lang="en"]{display:none!important}

/* 扫描线质感 */
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:50;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 3px)}

/* 顶栏 */
.nav{position:sticky;top:0;z-index:20;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  background:rgba(7,6,26,.72);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font:800 19px/1 var(--display);letter-spacing:.06em;color:var(--text)}
.brand:hover{text-shadow:none}
.brand .mark{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:16px;
  background:linear-gradient(135deg,var(--pink),var(--violet));box-shadow:0 0 18px rgba(255,43,214,.6)}
.nav .links{display:flex;gap:24px;margin-left:auto;font-size:14px;letter-spacing:.04em}
.nav .links a{color:var(--muted)} .nav .links a:hover{color:var(--text)}
.lang-toggle{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:rgba(255,255,255,.04)}
.lang-toggle button{border:0;background:transparent;color:var(--muted);font:600 12px/1 var(--display);letter-spacing:.06em;padding:8px 12px;border-radius:999px;cursor:pointer}
html[data-lang="en"] [data-set="en"],html[data-lang="zh"] [data-set="zh"]{color:#07061a;background:var(--cyan);box-shadow:0 0 14px var(--cyan)}

/* 首屏：文字在上，落日 + 3D 透视网格场景在下 */
.hero{position:relative;text-align:center;overflow:hidden;padding:80px 0 0}
.hero .content{position:relative;z-index:2;padding:0 24px}
.scene{position:relative;height:clamp(240px,34vw,380px);margin-top:40px;overflow:hidden}
.scene .sun{position:absolute;left:50%;bottom:44%;width:min(420px,70vw);aspect-ratio:1;transform:translate(-50%,50%);border-radius:50%;
  background:linear-gradient(180deg,var(--sun1),var(--sun2) 75%);filter:drop-shadow(0 0 60px rgba(255,43,214,.55));
  -webkit-mask:linear-gradient(#000 50%,transparent 50%),repeating-linear-gradient(180deg,#000 0 18px,transparent 18px 26px);
  -webkit-mask-composite:source-in;mask:linear-gradient(#000 50%,transparent 50%),repeating-linear-gradient(180deg,#000 0 18px,transparent 18px 26px);mask-composite:intersect}
.scene .horizon{position:absolute;left:0;right:0;bottom:44%;height:2px;background:var(--cyan);box-shadow:0 0 24px 4px var(--cyan)}
.scene .floor{position:absolute;left:-60%;right:-60%;bottom:0;height:44%;transform:perspective(300px) rotateX(55deg);transform-origin:center top;
  background-image:linear-gradient(var(--pink) 2px,transparent 2px),linear-gradient(90deg,var(--pink) 2px,transparent 2px);
  background-size:60px 60px;opacity:.6;animation:grid 2.5s linear infinite}
@keyframes grid{to{background-position:0 60px,0 0}}
.eyebrow{display:inline-block;font:600 12px/1 var(--display);letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
  border:1px solid var(--cyan);padding:9px 16px;border-radius:999px;box-shadow:0 0 16px rgba(0,240,255,.35) inset,0 0 16px rgba(0,240,255,.25);margin-bottom:26px}
h1{font:800 clamp(38px,7vw,78px)/1.05 var(--display);letter-spacing:.01em;margin:0 0 22px;
  background:linear-gradient(90deg,#fff,var(--cyan) 40%,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 0 22px rgba(0,240,255,.35))}
.lead{font-size:clamp(16px,2.1vw,19px);color:var(--muted);max-width:620px;margin:0 auto}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.btn{display:inline-flex;align-items:center;gap:8px;font:700 14px/1 var(--display);letter-spacing:.08em;text-transform:uppercase;
  padding:16px 26px;border-radius:12px;color:#07061a;background:linear-gradient(90deg,var(--cyan),var(--pink));
  box-shadow:0 0 22px rgba(255,43,214,.55),0 0 42px rgba(0,240,255,.25);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);text-shadow:none;box-shadow:0 0 30px rgba(255,43,214,.85),0 0 60px rgba(0,240,255,.45)}
.btn.ghost{background:transparent;color:var(--cyan);border:1px solid var(--cyan);box-shadow:0 0 16px rgba(0,240,255,.3)}

section{padding:80px 0;position:relative}
h2{font:800 clamp(24px,3.6vw,36px)/1.2 var(--display);letter-spacing:.04em;margin:0 0 10px}
h2 .glow{color:var(--pink);text-shadow:0 0 18px var(--pink)}
.sub{color:var(--muted);margin:0 0 34px}

/* 作品轮播 */
.carousel{position:relative}
.track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:20px 4px 30px;scrollbar-width:none;perspective:1200px}
.track::-webkit-scrollbar{display:none}
.slide{flex:0 0 min(460px,86%);scroll-snap-align:center;border-radius:24px;padding:30px;background:var(--card);border:1px solid var(--line);
  backdrop-filter:blur(10px);transform-style:preserve-3d;transition:transform .35s,box-shadow .35s;position:relative;overflow:hidden}
.slide::before{content:"";position:absolute;inset:-1px;border-radius:24px;padding:1px;pointer-events:none;
  background:linear-gradient(135deg,var(--cyan),transparent 40%,transparent 60%,var(--pink));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.slide:hover{transform:rotateY(-6deg) rotateX(4deg) translateZ(20px);box-shadow:0 30px 60px rgba(0,0,0,.5),0 0 40px rgba(139,92,255,.35)}
.slide .top{display:flex;gap:18px;align-items:center;margin-bottom:16px}
.slide img,.slide .ph{width:84px;height:84px;border-radius:20px;box-shadow:0 0 24px rgba(0,240,255,.35)}
.slide .ph{display:grid;place-items:center;font-size:40px;background:linear-gradient(135deg,#1a1450,#2b1a5e)}
.slide h3{font:800 22px/1.2 var(--display);letter-spacing:.03em;margin:0}
.slide p{color:var(--muted);margin:0 0 20px}
.badge{display:inline-block;font:700 11px/1 var(--display);letter-spacing:.12em;text-transform:uppercase;padding:7px 10px;border-radius:6px;margin-top:8px}
.badge.live{color:#07061a;background:var(--cyan);box-shadow:0 0 12px var(--cyan)}
.badge.soon{color:var(--pink);border:1px solid var(--pink);box-shadow:0 0 12px rgba(255,43,214,.4) inset}
.car-nav{display:flex;gap:10px;justify-content:flex-end}
.car-nav button{width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);font-size:18px;cursor:pointer}
.car-nav button:hover{border-color:var(--cyan);box-shadow:0 0 14px rgba(0,240,255,.4)}

/* 特性网格 */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature{border-radius:20px;padding:26px;background:var(--card);border:1px solid var(--line);transition:transform .25s,border-color .25s,box-shadow .25s}
.feature:hover{transform:translateY(-4px);border-color:var(--pink);box-shadow:0 0 26px rgba(255,43,214,.25)}
.feature .ico{font-size:28px;margin-bottom:10px;filter:drop-shadow(0 0 10px rgba(0,240,255,.5))}
.feature h4{font:700 16px/1.3 var(--display);letter-spacing:.04em;margin:0 0 8px}
.feature p{margin:0;color:var(--muted);font-size:15px}

/* 社区 / 联系 */
.community{border-radius:28px;padding:44px;text-align:center;background:
  linear-gradient(135deg,rgba(0,240,255,.12),rgba(255,43,214,.14));border:1px solid var(--line)}
.community .cta{margin-top:24px}

/* 文本页 */
.doc{max-width:760px;margin:0 auto;padding:70px 24px}
.doc h1{font-size:clamp(30px,5vw,46px);text-align:left}
.doc h2{font-size:18px;margin-top:38px;color:var(--cyan)}
.doc .meta{color:var(--muted);margin-bottom:30px}
.doc ul{padding-left:22px}
.note{border-radius:16px;padding:18px 22px;margin:28px 0;background:rgba(0,240,255,.07);border:1px solid rgba(0,240,255,.35)}
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{cursor:pointer;font-weight:600;list-style:none}
.faq summary::after{content:"+";float:right;color:var(--pink)}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--muted);margin:10px 0 0}

footer{border-top:1px solid var(--line);margin-top:30px;padding:34px 0 50px;color:var(--muted);font-size:13px}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer a{color:var(--muted)}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

@media (max-width:760px){
  .nav .links{display:none}
  .grid{grid-template-columns:1fr}
  .hero{padding:56px 0 0}
  .community{padding:30px 22px}
}
@media (prefers-reduced-motion:reduce){
  .scene .floor{animation:none} .reveal{opacity:1;transform:none} .slide:hover,.feature:hover{transform:none}
}