*{margin:0;padding:0;box-sizing:border-box}
:root{
--p:#6D28D9;--p2:#8B5CF6;--p3:#C4B5FD;
--bg:#0A0614;--line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.16);
--t1:#FFFFFF;--t2:#B8B0CC;--t3:#7E7695;
--lead:#CFC8E0;--h3:#E7E2F2;
--card:rgba(255,255,255,.035);--card2:rgba(255,255,255,.045);
--nav-bg:rgba(10,6,20,.84);
--hl-bg:linear-gradient(180deg,rgba(109,40,217,.16),rgba(109,40,217,.04));
--hl-line:rgba(139,92,246,.42);
--ph-bg:rgba(109,40,217,.18);--ph-line:rgba(139,92,246,.5);
}
/* 浅色主题 */
:root[data-theme="light"]{
--bg:#FFFFFF;--line:rgba(11,7,22,.10);--line2:rgba(11,7,22,.18);
--t1:#0B0716;--t2:#4E4759;--t3:#7A7488;
--p3:#6D28D9;
--lead:#3E3552;--h3:#241B33;
--card:rgba(109,40,217,.035);--card2:rgba(109,40,217,.06);
--nav-bg:rgba(255,255,255,.82);
--hl-bg:linear-gradient(180deg,rgba(109,40,217,.075),rgba(109,40,217,.02));
--hl-line:rgba(109,40,217,.26);
--ph-bg:rgba(109,40,217,.09);--ph-line:rgba(109,40,217,.35);
color-scheme:light;
}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--t2);line-height:1.9;font-size:15px;
font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
-webkit-font-smoothing:antialiased;transition:background .25s ease,color .25s ease}
a{color:var(--p3);text-decoration:none}
a:hover{text-decoration:underline}

.top{border-bottom:0.5px solid var(--line);position:sticky;top:0;z-index:9;
background:var(--nav-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.top-in{max-width:1120px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:9px;color:var(--t1);font-size:15px;font-weight:500}
.brand-mark{height:20px;width:auto;display:block;flex:none;object-fit:contain}
.top-act{display:flex;align-items:center;gap:14px}
.top .back{font-size:13px;color:var(--t3)}
.top .back:hover{color:var(--p3)}
.tgl{width:32px;height:32px;border-radius:50%;border:0.5px solid var(--line2);background:transparent;color:var(--t2);
display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0;transition:.2s;flex:none}
.tgl:hover{color:var(--p2);border-color:var(--p2)}
.tgl svg{width:15px;height:15px;display:block}
.tgl .i-moon{display:none}
:root[data-theme="light"] .tgl .i-sun{display:none}
:root[data-theme="light"] .tgl .i-moon{display:block}

.doc{max-width:820px;margin:0 auto;padding:56px 24px 88px}
h1{font-size:30px;color:var(--t1);font-weight:500;letter-spacing:-.4px;line-height:1.35}
.meta{color:var(--t3);font-size:13px;margin-top:14px;padding-bottom:24px;border-bottom:0.5px solid var(--line)}
.lead{margin-top:26px;color:var(--lead)}
h2{font-size:18px;color:var(--t1);font-weight:500;margin:44px 0 12px;letter-spacing:-.2px}
h3{font-size:15.5px;color:var(--h3);font-weight:500;margin:24px 0 8px}
p{margin:12px 0}
ul,ol{margin:12px 0 12px 22px}
li{margin:7px 0}
strong{color:var(--t1);font-weight:500}
.box{border:0.5px solid var(--line);border-radius:14px;padding:20px 22px;background:var(--card);margin:22px 0}
.box.hl{border-color:var(--hl-line);background:var(--hl-bg)}
.box-t{color:var(--t1);font-size:15px;font-weight:500;margin-bottom:8px}
.ph{color:var(--p3);background:var(--ph-bg);border:0.5px dashed var(--ph-line);
border-radius:5px;padding:0 6px;font-size:13px;white-space:nowrap}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
th,td{border:0.5px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
th{color:var(--t1);font-weight:500;background:var(--card2)}
.nav-legal{display:flex;gap:20px;flex-wrap:wrap;margin-top:36px;padding-top:24px;border-top:0.5px solid var(--line);font-size:13.5px}
.foot{border-top:0.5px solid var(--line);padding:26px 24px;text-align:center;color:var(--t3);font-size:12.5px}
.foot a{color:var(--t3)}
.foot a:hover{color:var(--p3)}
@media(max-width:600px){
h1{font-size:24px}
h2{font-size:16.5px}
h3{font-size:15px}
.doc{padding:36px 18px 64px}
body{font-size:14.5px;line-height:1.85}
table{font-size:13px}
th,td{padding:8px 10px}
.ph{white-space:normal}
}