:root{color-scheme:dark}
*{box-sizing:border-box}
@keyframes bubble-rise{0%{transform:translateY(20px);opacity:0}50%{opacity:1}100%{transform:translateY(-20px);opacity:0}}
@keyframes water-wave{0%{background-position:0% 50%}100%{background-position:100% 50%}}
@keyframes float-updown{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
body{margin:0;font:16px/1.6 'Quicksand',sans-serif;background:#01579b;color:#e1f5fe;background-image:linear-gradient(0deg,#01579b,#0277bd)}
.ut-wrap{max-width:1100px;margin:0 auto;padding:0 20px}
.ut-header{padding:40px 0;background:linear-gradient(135deg,#0288d1,#03a9f4);border-bottom:4px solid #80deea;text-align:center;position:relative;overflow:hidden}
.ut-header::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='100' height='20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 10 Q25 20 50 10 Q75 0 100 10 L100 20 L0 20 Z' fill='%2381d4fa' fill-opacity='0.5'/%3E%3C/svg%3E");background-size:100px 20px;animation:water-wave 10s linear infinite}
.ut-banner{font-size:32px;font-weight:900;color:#80deea;margin-bottom:20px;text-shadow:0 0 10px rgba(128,222,234,.5);position:relative;z-index:2}
.ut-main-title{margin:0 0 16px 0;font-size:36px;font-weight:700;color:#fff;text-shadow:0 0 10px rgba(3,169,244,.5);position:relative;z-index:2}
.ut-sub{margin:0 0 12px 0;color:#e1f5fe;font-weight:500;position:relative;z-index:2}
.ut-dive{color:#80deea;font-weight:700;font-size:18px;position:relative;z-index:2}
.ut-abyss{display:grid;gap:24px;padding:40px 0}
.ut-chest{display:grid;grid-template-columns:120px 1fr 100px;gap:24px;align-items:center;padding:28px;background:linear-gradient(135deg,#0277bd,#01579b);border:2px solid #80deea;border-radius:15px;box-shadow:0 8px 16px rgba(1,87,155,.2);transition:all .3s ease;position:relative}
.ut-chest::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='100' height='20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 10 Q25 20 50 10 Q75 0 100 10 L100 20 L0 20 Z' fill='%2381d4fa' fill-opacity='0.2'/%3E%3C/svg%3E");background-size:100px 20px;background-position:bottom;opacity:0.5}
.ut-chest:hover{transform:translateY(-5px);box-shadow:0 12px 24px rgba(128,222,234,.3)}
.ut-ocean{text-align:center;animation:float-updown 4s ease-in-out infinite}
.ut-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle,#03a9f4,#0288d1);border-radius:50%;border:3px solid #80deea;margin:0 auto 8px}
.ut-creature{font-size:14px;color:#80deea;font-weight:700}
.ut-content{min-width:0}
.ut-title{margin:0 0 12px 0;font-size:22px;font-weight:700;color:#e1f5fe}
.ut-title a{color:inherit;text-decoration:none;text-shadow:0 0 5px rgba(128,222,234,.3)}
.ut-title a:hover{color:#80deea;text-shadow:0 0 10px rgba(128,222,234,.5)}
.ut-desc{margin:0 0 16px 0;color:#b3e5fc;font-size:15px;line-height:1.6}
.ut-features{display:flex;gap:8px;flex-wrap:wrap}
.ut-feature{background:rgba(128,222,234,.1);color:#80deea;padding:6px 12px;border-radius:20px;font-size:13px;font-weight:600;border:1px solid #80deea}
.ut-depth{text-align:center}
.ut-bubbles{height:60px;position:relative;margin-bottom:8px}
.ut-bubble{position:absolute;width:10px;height:10px;background:rgba(255,255,255,.3);border-radius:50%;left:50%;animation:bubble-rise 3s infinite}
.ut-bubble:nth-child(1){left:30%;animation-delay:0s;width:12px;height:12px}
.ut-bubble:nth-child(2){left:50%;animation-delay:0.5s;width:8px;height:8px}
.ut-bubble:nth-child(3){left:70%;animation-delay:1s;width:10px;height:10px}
.ut-meters{font-size:14px;color:#80deea;font-weight:700}
.ut-footer{padding:28px 0;border-top:3px solid #80deea;text-align:center;color:#e1f5fe;font-weight:700;background:#01579b}

  .addon { padding: 24px 0; border-top:1px solid #232323; }
  .addon-title { font-size: 20px; margin: 0 0 14px 0; position: relative; display:inline-block; }
  .addon-title:after { content:''; position:absolute; left:0; bottom:-6px; width: 42px; height: 3px; background: linear-gradient(90deg,#1a73e8,#00b4d8); border-radius: 3px; }

  /* Highlight card */
  .highlight { padding: 0; border: none; }
  .highlight-inner { display:flex; gap:14px; align-items:center; padding:16px; background: linear-gradient(135deg, rgba(26,115,232,0.08), rgba(0,180,216,0.08)); border:1px solid #2a2a2a; border-radius: 14px; }
  .highlight-icon { width:42px; height:42px; display:flex; align-items:center; justify-content:center; background:#1a1a1a; border:1px solid #2a2a2a; border-radius:10px; font-size:20px; }
  .highlight-content p { margin: 8px 0 0 0; color:#bdbdbd; }

  .table-wrap { overflow-x: auto; border:1px solid #2a2a2a; border-radius: 12px; background:#131313; }
  .table { width: 100%; border-collapse: collapse; }
  .table thead th { background:#191919; color:#ddd; font-weight:700; }
  .table th, .table td { border-bottom: 1px solid #242424; padding: 10px 12px; text-align: left; }
  .table tr:last-child td { border-bottom: none; }
  .table code { background:#1f1f1f; border:1px solid #2a2a2a; padding: 2px 6px; border-radius:6px; }

  .list { display: grid; gap: 8px; margin: 0; padding-left: 18px; }

  .grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
  .grid-card { display: grid; grid-template-columns: 40px 1fr; gap: 12px; padding: 12px; border: 1px solid #2a2a2a; border-radius: 12px; background: #141414; transition: transform .12s ease, border-color .12s ease; }
  .grid-card:hover { transform: translateY(-2px); border-color:#3a3a3a; }
  .grid-rank { width: 40px; height: 40px; background: #1a73e8; color: #fff; border-radius: 10px; display:flex; align-items:center; justify-content:center; font-weight: 800; box-shadow: 0 4px 12px rgba(26,115,232,.25); }
  .grid-title { font-weight: 700; }
  .grid-desc { color: #b0b0b0; }

  .chips { list-style:none; padding:0; margin:0; display:flex; flex-wrap: wrap; gap:10px; }
  .chips li { background:#171717; border:1px solid #2a2a2a; padding:8px 12px; border-radius:999px; color:#ddd; }

  .steps { margin:0; padding-left:18px; }
  .steps li { margin: 0 0 6px 0; }

  .faq details { border:1px solid #2a2a2a; border-radius:12px; padding:10px 14px; background:#151515; }
  .faq details+details { margin-top:10px; }
  .faq summary { cursor:pointer; color:#ddd; }