*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:#14121f;color:#eceaf6;line-height:1.75}
a{color:#c0a8ff;text-decoration:none}
a:hover{color:#d8ccff}
.wrap{max-width:920px;margin:0 auto;padding:0 22px}
nav{background:#191627;border-bottom:1px solid #2a2440;position:sticky;top:0;z-index:10}
nav .wrap{display:flex;align-items:center;height:56px;gap:24px}
nav .logo{font-weight:700;font-size:17px;color:#fff}
nav .logo span{color:#a678ff}
nav a{color:#b3a8d6;font-size:14.5px}
nav a:hover,nav a.active{color:#c0a8ff}
header.hero{padding:76px 0 56px;background:linear-gradient(150deg,#14121f 0%,#2a1f4d 55%,#4a2f8c 100%);text-align:center}
header.hero h1{font-size:38px;color:#fff}
header.hero h1 span{color:#a678ff}
header.hero p{margin-top:13px;color:#b3a8d6;font-size:16.5px}
.btns{margin-top:28px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 28px;border-radius:8px;font-size:15px}
.btn.pri{background:#6a4bc9;color:#fff}
.btn.pri:hover{background:#7d5ede;color:#fff}
.btn.sec{border:1px solid #4a3a7c;color:#c6bcE8}
.btn.sec:hover{border-color:#a678ff;color:#d8ccff}
main{padding:52px 0 40px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:20px}
.card{background:#1e1a30;border:1px solid #332a52;border-radius:12px;padding:24px;transition:.25s}
.card:hover{transform:translateY(-3px);border-color:#554090}
.card h3{font-size:16.5px;margin-bottom:8px;color:#c0a8ff}
.card p{font-size:13.5px;color:#b3a8d6}
section{margin-bottom:48px}
h2.sec{font-size:23px;margin-bottom:8px;color:#fff}
h2.sec small{font-size:13px;color:#7a6f9c;font-weight:400;margin-left:10px;letter-spacing:1px}
p.desc{color:#b3a8d6;margin-bottom:20px;font-size:14.5px}
article.doc{background:#1a1729;border:1px solid #332a52;border-radius:12px;padding:30px 32px}
article.doc h1{font-size:24px;color:#fff;margin-bottom:6px}
article.doc h2{font-size:18px;color:#c0a8ff;margin:26px 0 10px;padding-top:14px;border-top:1px dashed #332a52}
article.doc p,article.doc li{font-size:14.5px;color:#d5cdf0}
article.doc ul,article.doc ol{padding-left:22px;margin:8px 0 14px}
.tip{background:#1f2a1e;border:1px solid #2f5c33;border-radius:8px;padding:12px 16px;font-size:13.5px;color:#9fd6a8;margin:12px 0}
ul.list{list-style:none;padding:0}
ul.list li{padding:12px 0;border-bottom:1px dashed #2a2440}
ul.list li .t{color:#eceaf6;font-size:14.5px}
footer{border-top:1px solid #2a2440;padding:24px 0;text-align:center;font-size:13px;color:#7a6f9c}
.crumb{font-size:13px;color:#7a6f9c;margin-bottom:16px}

/* ===== 移动端适配 ===== */
@media (max-width:720px){
  nav .wrap{flex-wrap:wrap;height:auto;padding:10px 14px;gap:4px 16px;justify-content:center}
  nav .logo{width:100%;text-align:center;font-size:16px}
  nav a{font-size:13.5px}
  header.hero{padding:44px 0 36px}
  header.hero h1{font-size:27px}
  header.hero p{font-size:14.5px}
  .btn{padding:10px 22px;font-size:14px}
  main{padding:30px 0 28px}
  .wrap{padding:0 14px}
  section{margin-bottom:32px}
  h2.sec{font-size:19px}
  h2.sec small{display:block;margin:2px 0 0}
  article.doc{padding:20px 16px}
  article.doc h1{font-size:20px}
  article.doc ul,article.doc ol{padding-left:18px}
  .grid{gap:12px}
  .card{padding:18px 14px}
  ul.list li .t{font-size:14px}
  ul.list li .m{display:none}
}