:root{--enamel:#E6EAE4;--paper:#F7F8F5;--graphite:#1F2629;--steel:#56646A;--line:#C6CDC7;--signal:#F2B300;--signal-dark:#C99400;--blue:#1E4F6E}
*{box-sizing:border-box}
body{margin:0;background:var(--enamel);color:var(--graphite);font:400 17px/1.7 "Be Vietnam Pro","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif}
a{color:var(--blue)}
:focus-visible{outline:3px solid var(--signal);outline-offset:2px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:10;background:var(--graphite)}
.bar{display:flex;align-items:center;gap:16px;height:60px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:20px;letter-spacing:.02em}
.logo svg{height:28px;width:auto;display:block}
nav.main{display:flex;gap:22px;margin-left:auto}
nav.main a{color:#D5DBD7;text-decoration:none;font-size:15px}
nav.main a:hover,nav.main a[aria-current]{color:#fff}
.langs{display:flex;border:1px solid #4A5559;border-radius:6px;overflow:hidden}
.langs a{color:#D5DBD7;text-decoration:none;font-weight:500;font-size:14px;padding:8px 10px;min-width:36px;text-align:center}
.langs a[aria-current]{background:var(--signal);color:var(--graphite)}
@media (max-width:760px){nav.main{display:none}.langs{margin-left:auto}}
main{padding:56px 0 72px}
.doc{max-width:720px}
h1{font-size:clamp(30px,4.4vw,44px);line-height:1.2;letter-spacing:-.015em;margin:0 0 12px}
h2{font-size:24px;line-height:1.3;margin:40px 0 10px}
.meta{color:var(--steel);font-size:15px;margin:0 0 28px}
.intro{font-size:19px;color:#3A464B}
.list{margin-top:32px;border-top:2px solid var(--graphite);max-width:820px}
.item{display:block;padding:22px 4px;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}
.item:hover{background:var(--paper)}
.item h2{margin:0 0 6px;font-size:22px}
.item p{margin:0;color:var(--steel)}
.item span{display:inline-block;margin-top:8px;font-weight:600;font-size:15px;color:var(--blue)}
.doc ul{padding-left:22px}.doc li{margin:6px 0}
.note{margin-top:32px;padding-top:16px;border-top:1px solid var(--line);font-size:15px;color:var(--steel)}
.cta{margin-top:48px;background:var(--graphite);color:#fff;padding:26px}
.cta h2{margin:0 0 6px;font-size:22px}
.cta p{margin:0 0 18px;color:#D5DBD7}
.btn{display:inline-block;background:var(--signal);color:var(--graphite);font-weight:600;text-decoration:none;padding:13px 22px;border-radius:6px}
.btn:hover{background:var(--signal-dark)}
footer{background:var(--graphite);color:#AEB8B3;padding:28px 0;font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.flinks{display:flex;gap:18px}.flinks a{color:#D5DBD7}