:root{--green:#1d7a4c;--green-2:#2f9d63;--ink:#14231a;--ink2:#3d4f44;--muted:#7a8a80;--line:#e6ece8;--bg:#f7faf8}
*{box-sizing:border-box;margin:0;padding:0}
body{font:15px/1.78 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:760px;margin:0 auto;padding:0 22px}
header{background:linear-gradient(135deg,#1d7a4c 0%,#2f9d63 100%);color:#fff;padding:44px 0 38px;margin-bottom:34px}
header .brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}
header .brand img{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.18);padding:6px}
header .brand b{font-size:18px;letter-spacing:.4px}
header .brand span{font-size:11.5px;opacity:.75;display:block;font-weight:400;letter-spacing:2px}
header h1{font-size:26px;line-height:1.35;font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
header p{font-size:14.5px;opacity:.92;line-height:1.8;max-width:640px}
header nav{margin-top:20px;font-size:13.5px}
header nav a{color:#fff;opacity:.85;margin-right:18px;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:2px}
main{background:#fff;border-radius:18px;padding:36px 32px;margin-bottom:30px;box-shadow:0 2px 16px rgba(20,35,26,.05)}
h2{font-size:19px;font-weight:750;margin:34px 0 12px;letter-spacing:-.2px;padding-bottom:8px;border-bottom:2px solid var(--line)}
h2:first-child{margin-top:0}
h3{font-size:15.5px;font-weight:700;margin:24px 0 6px;color:var(--ink)}
p{margin-bottom:12px;color:var(--ink2)}
ul,ol{margin:8px 0 16px 22px;color:var(--ink2)}
li{margin-bottom:7px}
li b, p b, td b{color:var(--ink)}
table{width:100%;border-collapse:collapse;margin:14px 0 18px;font-size:14px}
th{background:#f2f7f4;text-align:left;padding:10px 12px;font-weight:700;border-bottom:2px solid var(--line)}
td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink2)}
.note{background:#fffbf0;border-left:3px solid #e0a30a;padding:12px 16px;border-radius:0 8px 8px 0;font-size:13.5px;color:#6b5a2e;margin:16px 0}
.toc{background:#f5f9f6;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:24px;font-size:14px}
.toc b{display:block;margin-bottom:8px;font-size:13.5px;color:var(--muted);letter-spacing:.5px}
.toc a{display:inline-block;margin:0 14px 6px 0}
.faq details{border-bottom:1px solid var(--line);padding:15px 0}
.faq summary{font-weight:600;cursor:pointer;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:12px;font-size:15px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--muted);font-weight:400;flex:none;font-size:18px;line-height:1}
.faq details[open] summary::after{content:'−'}
.faq details p{margin:10px 0 0;font-size:14px;line-height:1.85}
.links{margin-top:26px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px}
.links a{margin-right:18px;display:inline-block}
footer{text-align:center;color:var(--muted);font-size:12.5px;line-height:2;padding:20px 0 46px}
footer a{color:var(--muted);border-bottom:1px dotted #c9d2cc}
@media(max-width:560px){header{padding:34px 0 28px}header h1{font-size:21px}main{padding:24px 19px;border-radius:14px}h2{font-size:17.5px}table{font-size:13px}th,td{padding:8px 9px}.toc a{display:block;margin:0 0 6px}}