/* 电云谷独立站 · 全站样式。图内文字规范另见 README；本文件不引入外部字体文件。 */
:root{--ink:#1a2233;--muted:#5b6478;--line:#e2e6ef;--bg:#ffffff;--soft:#f5f7fb;--brand:#26418f;--accent:#eef2fb;--warn:#8a5b00}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans SC",sans-serif;line-height:1.75;font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#fff;padding:8px 14px;z-index:10}
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:62px;flex-wrap:wrap}
.brand{font-weight:700;font-size:19px;color:var(--brand);white-space:nowrap}
.main-nav{display:flex;gap:16px;flex-wrap:wrap;font-size:14px}
.main-nav a{color:var(--muted)}
.main-nav a:hover{color:var(--brand)}
.crumbs{padding:14px 0 0;font-size:13px;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.crumbs li+li:before{content:"/";margin-right:6px;color:#b7bfd0}
main{padding-top:22px;padding-bottom:48px}
article{max-width:860px}
h1{font-size:29px;line-height:1.4;margin:10px 0 18px;letter-spacing:.2px}
h2{font-size:20px;line-height:1.5;margin:34px 0 12px;padding-left:11px;border-left:4px solid var(--brand)}
h3{font-size:17px;margin:22px 0 8px}
p{margin:0 0 14px}
.answer{background:var(--accent);border:1px solid #d6def3;border-radius:10px;padding:16px 18px;font-size:17px;line-height:1.8;margin:0 0 24px}
ul{margin:0 0 16px;padding-left:22px}
li{margin:4px 0}
.table-wrap{overflow-x:auto;margin:18px 0 26px}
table{border-collapse:collapse;width:100%;font-size:14.5px;min-width:560px}
caption{text-align:left;font-weight:700;color:var(--muted);padding:0 0 8px;font-size:14px}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
thead th{background:var(--soft);font-weight:700}
tbody tr:nth-child(even){background:#fafbfe}
.faq{margin-top:34px;border-top:1px solid var(--line);padding-top:8px}
.faq dl{margin:0}
.faq dt{font-weight:700;margin:18px 0 5px}
.faq dd{margin:0 0 12px;color:#333c50}
.related{margin-top:36px;background:var(--soft);border-radius:10px;padding:14px 20px}
.related h2{font-size:16px;border:0;padding:0;margin:0 0 8px}
.related ul{columns:2;column-gap:28px;margin:0;padding-left:20px;font-size:14.5px}
.site-footer{border-top:1px solid var(--line);background:var(--soft);padding:26px 0 34px;font-size:13px;color:var(--muted)}
.site-footer p{margin:0 0 7px}
.site-footer .disclosure{color:var(--warn)}
.site-footer .meta{font-variant-numeric:tabular-nums}
@media(max-width:720px){body{font-size:15px}h1{font-size:24px}h2{font-size:18px}.related ul{columns:1}.site-header .wrap{min-height:auto;padding-top:10px;padding-bottom:10px}.main-nav{gap:12px}.wrap{padding:0 14px}.answer{font-size:15.5px;padding:14px}.table-wrap{margin:16px 0 22px}table{min-width:0;font-size:13px}caption{font-size:13px}th,td{padding:7px 6px;overflow-wrap:anywhere}ul{padding-left:18px}}