:root{
      --hero-bg: url('https://www.moyre.xin/static/image/index_bkg.webp'); 
      --accent: rgba(255,255,255,0.96);
      --muted: rgba(255,255,255,0.74);
      --glass: rgba(255,255,255,0.10);
      --glass-strong: rgba(255,255,255,0.14);
      --overlay: rgba(0,0,0,0.34);
      --max-w: 920px;
      --below-bg: #0b1220;
      --nav-height: 56px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: system-ui,-apple-system,Segoe UI,Roboto,'Noto Sans','Hiragino Sans',"PingFang SC",'Microsoft Yahei',sans-serif;
      color:var(--accent);
      background: var(--below-bg);
      -webkit-font-smoothing:antialiased;
      -moz-osx-font-smoothing:grayscale;
      overflow-y:auto;
      min-height:100vh;
    }


    .overlay{position:fixed;inset:0;background:linear-gradient(var(--overlay), var(--overlay));pointer-events:none;z-index:2}

    nav{
      position:fixed;left:0;right:0;top:12px;height:var(--nav-height);
      display:flex;align-items:center;justify-content:space-between;padding:0 28px;gap:16px;font-size:14px;z-index:100;
      pointer-events:auto;
    }
    .brand{font-weight:600;flex:0 0 auto}
    .links{display:flex;align-items:center;gap:12px}
    .links a{color:var(--muted);text-decoration:none;opacity:0.96}
    .links a:hover{opacity:1;text-decoration:underline}

    .nav-center{position:relative;flex:0 0 auto;margin:0 12px}
    .nav-toggle{
      background:transparent;border:none;color:var(--muted);font-weight:600;padding:8px 12px;border-radius:8px;cursor:pointer;
      display:inline-flex;align-items:center;gap:8px;
    }
    .nav-toggle:focus{outline:2px solid rgba(255,255,255,0.06);outline-offset:3px}
    .nav-dropdown{
      position:absolute;left:50%;transform:translateX(-50%) translateY(-8px);top:calc(100% + 8px);
      min-width:220px;background:rgba(255,255,255,0.03);backdrop-filter: blur(6px);border-radius:10px;padding:8px;
      box-shadow:0 10px 30px rgba(0,0,0,0.35);opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;
      z-index:120;
    }
    .nav-dropdown a{display:block;padding:10px 12px;color:var(--accent);text-decoration:none;border-radius:6px;font-size:13px}
    .nav-dropdown a:hover{background:rgba(255,255,255,0.02)}

    .nav-center:hover .nav-dropdown,
    .nav-center:focus-within .nav-dropdown,
    .nav-center.open .nav-dropdown{
      opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto;
    }

    main{display:block;z-index:1}

    .hero{
      height:100vh;display:flex;align-items:center;justify-content:center;padding:80px 20px 20px;
      position:relative;background-image:var(--hero-bg);background-size:cover;background-position:center;background-repeat:no-repeat;
    }

    .hero > .stack{position:relative;z-index:30;max-width:var(--max-w);width:100%;text-align:center;opacity:0;transform:translateY(8px);animation:fadeInUp .6s .08s forwards ease-out}
    @keyframes fadeInUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

    h1{margin:0 0 14px 0;font-weight:600;font-size:30px;color:var(--accent)}
    p.subtitle{margin:0 0 22px 0;color:var(--muted);font-size:15px}

    /* 搜索区 */
    form.search{display:flex;align-items:center;justify-content:center;flex-direction:column}
    .input-wrap{width:min(var(--max-w),94%);position:relative;margin:0 auto}
    .search-row{display:flex;align-items:center;width:100%}
    .search input{width:100%;height:56px;padding:0 18px;border-radius:999px;border:none;outline:none;font-size:16px;background:var(--glass);color:var(--accent);backdrop-filter: blur(6px);transition:box-shadow .22s ease,transform .28s cubic-bezier(.2,.9,.2,1);z-index:30}
    .search input:focus{box-shadow:0 14px 40px rgba(0,0,0,0.45);transform:translateY(-2px)}
    .search button{margin-left:12px;padding:10px 12px;border-radius:999px;border:none;background:var(--glass-strong);color:var(--accent);cursor:pointer;height:46px;display:inline-flex;align-items:center;justify-content:center}
    .search input::placeholder{color:rgba(255,255,255,0.66)}

    .icon-search{width:18px;height:18px;display:block;opacity:0.95}

    .examples{position:absolute;left:0;right:0;top:calc(100% + 12px);display:flex;flex-direction:column;gap:8px;opacity:0;transform:translateY(6px);transition:opacity .18s ease,transform .18s ease;pointer-events:none;z-index:60}
    .examples.show{opacity:1;transform:translateY(0);pointer-events:auto}
    .example{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.02));text-decoration:none;color:var(--accent);font-size:14px;box-shadow:0 6px 18px rgba(0,0,0,0.22)}
    .example .meta{display:flex;flex-direction:column;text-align:left}
    .example .title{font-weight:600}
    .example .desc{color:var(--muted);font-size:13px;margin-top:4px}

    .scroll-hint{position:fixed;left:50%;transform:translateX(-50%);bottom:18px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);transition:opacity .2s ease;z-index:22}
    .chev{width:22px;height:22px;border-radius:999px;background:rgba(255,255,255,0.06);display:flex;align-items:center;justify-content:center}
    .chev svg{width:12px;height:12px;opacity:0.9}

    .explore{background:var(--below-bg);padding:48px 20px 72px 20px;text-align:center;color:var(--accent)}
    .explore h2{margin:0 0 12px 0;font-size:18px}
    .explore .items{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:14px}
    .explore a{min-width:240px;max-width:360px;padding:16px 18px;border-radius:12px;text-decoration:none;background:rgba(255,255,255,0.03);color:var(--accent);display:flex;flex-direction:column;align-items:flex-start;transition:transform .18s ease,box-shadow .18s ease}
    .explore a:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,0.28)}
    .explore .name{font-weight:600}
    .explore .why{color:var(--muted);font-size:13px;margin-top:6px}

    footer{background:var(--below-bg);padding:28px 20px;border-top:1px solid rgba(255,255,255,0.04);color:var(--muted);font-size:13px;text-align:center}

    /* responsive tweaks */
    @media (max-width:920px){ .nav-dropdown{min-width:180px} }
    @media (max-width:720px){ .explore .items{flex-direction:column;align-items:center} .input-wrap{width:92%} }
    @media (max-width:520px){ h1{font-size:20px} .links a{margin-left:12px} nav{padding:0 12px} .search button{display:flex} }