:root{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#263344}*{box-sizing:border-box}body{margin:0;background:#fff}.mobile-header{min-height:58px;border-bottom:1px solid #e4e8ed;display:flex;align-items:center;justify-content:space-between;padding:8px 15px;position:relative;z-index:30}.brand{display:flex;align-items:center;gap:8px}.brand img{width:38px;height:38px;object-fit:contain}.brand strong{font-size:18px}.mobile-menu{position:relative}.mobile-menu summary{width:44px;height:44px;display:grid;place-items:center;cursor:pointer;list-style:none;border-radius:8px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu summary:focus-visible{outline:3px solid #e3111140;outline-offset:2px}.ss-menu-lines{width:25px;height:20px;display:flex;flex-direction:column;justify-content:space-between}.ss-menu-lines i{display:block;width:25px;height:2px;border-radius:2px;background:#263344;transition:transform .2s ease,opacity .2s ease}.mobile-menu[open] .ss-menu-lines i:nth-child(1){transform:translateY(9px) rotate(45deg)}.mobile-menu[open] .ss-menu-lines i:nth-child(2){opacity:0}.mobile-menu[open] .ss-menu-lines i:nth-child(3){transform:translateY(-9px) rotate(-45deg)}.ss-visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.mobile-header nav{position:absolute;right:0;top:49px;width:min(280px,calc(100vw - 30px));max-height:calc(100vh - 74px);overflow:auto;background:#fff;border:1px solid #e6e9ed;border-radius:10px;padding:10px;box-shadow:0 12px 32px #1a2c4830;display:grid;gap:2px}.mobile-header nav a{color:#2c3a4b;text-decoration:none;padding:11px 12px;border-radius:7px}.mobile-header nav a:hover,.mobile-header nav a:focus-visible{background:#f6f7f9;color:#c80d0d}.mobile-article{padding:0 15px}.breadcrumb{padding:12px 0;border-bottom:1px solid #e5e8ec;color:#7b8490;font-size:13px}.breadcrumb a{color:#385aab;text-decoration:none}article h1{text-align:center;font-size:24px;line-height:1.45;margin:25px 0 10px}.meta{text-align:center;color:#8a929c;font-size:12px}.lead{padding:13px;margin:20px 0;background:#f6f8fa;border:1px solid #e1e5ea;line-height:1.7}article{font-size:16px;line-height:1.8}article img{max-width:100%;height:auto}article h2,article h3{color:#244da8;border-bottom:1px solid #365fb8;padding-bottom:8px}