:root{--ink:#263342;--muted:#697684;--blue:#2874b8;--pale:#edf5fc;--line:#e5e9ee;--bg:#f5f6f8;--radius:10px;--width:1440px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font:15px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif;color:var(--ink);background:var(--bg)}button,input,select,textarea{font:inherit}a{color:inherit;text-decoration:none}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button{color:inherit}a:hover{color:var(--blue)}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #87b6df;outline-offset:3px}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.5}img{max-width:100%;display:block}svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.6;fill:none;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button{border:0;background:none}small,.muted{color:var(--muted)}small{font-size:13px}.blue{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:7px 17px;border:1px solid #d8e0e8;border-radius:6px;background:white;white-space:nowrap;font-size:14px}.btn:hover{background:#f2f7fc;border-color:#adc5db;color:var(--blue)}.btn.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn.primary:hover{background:#1e619d}.btn.quiet{background:transparent}.textbtn{padding:5px 0;color:var(--blue)}.wrap{width:min(var(--width),calc(100% - 72px));margin:auto}.previewbar{background:#f0f3f6;border-bottom:1px solid #e0e6ed;font-size:12px;color:#5c6d7e}.previewinner{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:16px}.previewname{display:flex;align-items:center;gap:13px}.previewname strong{font-weight:600;color:#3a4e61}.previewtools{display:flex;align-items:center;gap:14px}.previewtools a:hover{text-decoration:underline}.previewtools select{font-size:12px;border:0;background:transparent;color:#4c6174;padding:4px;max-width:165px}.previewtools button{font-size:12px;color:#2874b8}.header{background:white;border-bottom:1px solid var(--line);position:relative;z-index:20}.headerinner{display:flex;align-items:center;gap:34px;min-height:96px}.brand{display:flex;align-items:center;flex-shrink:0}.brand img{width:178px}.nav{display:flex;align-items:center;gap:24px;flex:1}.nav>a,.dropdown>button{padding:28px 0;font-size:15px;white-space:nowrap}.nav>a.active{color:var(--blue)}.dropdown{position:relative}.dropdown>button{display:flex;align-items:center;gap:5px}.dropdown>button svg{width:13px}.dropdown-menu{display:none;position:absolute;top:100%;left:-20px;width:204px;padding:10px;background:white;border:1px solid var(--line);border-radius:8px;box-shadow:0 10px 28px #233c5412}.dropdown.open .dropdown-menu{display:block}.dropdown-menu a{display:block;padding:9px 12px;font-size:14px;border-radius:4px}.dropdown-menu a:hover{background:var(--pale)}.headeractions{display:flex;gap:14px;align-items:center}.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:6px;padding:6px 10px;max-width:194px}.search input{border:0;outline:none;width:130px;background:transparent;font-size:13px}.search button{display:flex;padding:2px;color:var(--muted)}.mobile-toggle{display:none}.rail{display:none}.layout{display:grid;grid-template-columns:minmax(0,1fr) 306px;gap:32px;padding-top:30px;padding-bottom:55px;align-items:start}.main{min-width:0}.surface{background:white;border:1px solid var(--line);border-radius:var(--radius)}.hero{display:grid;grid-template-columns:1fr 46%;gap:30px;padding:35px 36px;background:#eef4f9;align-items:center;overflow:hidden;border-radius:var(--radius);min-height:260px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--blue);font-weight:600;margin-bottom:12px}.hero h1{font-size:32px;letter-spacing:-1px;font-weight:650}.hero p{color:#617383;font-size:14px;line-height:1.9;margin:13px 0 20px}.heroimg{border:6px solid white;border-radius:7px;box-shadow:0 8px 25px #43658412;overflow:hidden}.heroimg img{width:100%;height:170px;object-fit:cover;object-position:left}.herolinks{display:flex;gap:20px;align-items:center}.herofoot{display:flex;gap:5px;margin-top:20px}.herofoot span{width:5px;height:5px;border-radius:8px;background:#b6c8d7}.herofoot span:first-child{width:20px;background:var(--blue)}.shortcuts{display:grid;grid-template-columns:repeat(4,1fr);margin:20px 0 30px;padding:20px 8px;background:white;border:1px solid var(--line);border-radius:var(--radius)}.shortcut{display:flex;gap:12px;align-items:center;padding:0 18px;border-right:1px solid var(--line)}.shortcut:last-child{border:0}.tileicon{display:flex;align-items:center;justify-content:center;width:42px;height:42px;flex-shrink:0;border-radius:9px;background:var(--pale);color:var(--blue)}.shortcut strong{display:block;font-size:14px;font-weight:600}.shortcut small{display:block;font-size:12px;white-space:nowrap}.sectionhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px;padding:0 0 14px;border-bottom:1px solid var(--line);gap:12px}.sectionhead h2{font-size:20px;font-weight:600}.sectionhead a{font-size:13px;color:var(--muted)}.feed{padding:25px 30px}.post{display:flex;gap:22px;padding:26px 0;border-bottom:1px solid var(--line)}.post:last-child{border-bottom:0}.post-icon{width:52px;height:52px;border-radius:12px;background:#f1f5f8;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#5583a9;margin-top:5px}.post-icon svg{width:25px;height:25px}.post-content{min-width:0;flex:1}.post h3{font-size:18px;font-weight:600;line-height:1.6;letter-spacing:.1px;margin-bottom:8px}.post p{color:#657280;font-size:14px;line-height:1.9;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:7px 0 14px}.meta{font-size:12px;color:#788491;display:flex;gap:15px;align-items:center;flex-wrap:wrap}.meta .category{color:#6384a0}.meta time{margin-left:auto}.post-number{display:none}.sidebar{display:flex;flex-direction:column;gap:22px}.sidebox{padding:24px;background:white;border:1px solid var(--line);border-radius:var(--radius)}.sidebox h3{font-size:15px;font-weight:600;margin-bottom:18px}.account-head{display:flex;gap:14px;align-items:center;margin-bottom:19px}.avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#edf2f6;color:#6c8398;font-size:20px;flex-shrink:0}.account-head strong{font-size:15px;font-weight:600}.account-head small{display:block;font-size:12px}.account-actions{display:flex;gap:9px}.account-actions>*{flex:1}.account-extra{text-align:center;font-size:12px;margin-top:13px;color:var(--muted)}.contacts{display:grid;grid-template-columns:1fr 1fr;gap:10px}.contact{padding:14px 10px;min-height:86px;background:#f7f9fb;border-radius:6px;display:flex;flex-direction:column;align-items:flex-start;gap:6px;font-size:13px;text-align:left}.contact>span{display:flex;align-items:center;gap:8px}.contact svg{width:18px;color:#6e90ac}.contact small{font-size:11px;margin-left:26px;white-space:normal}.side-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px;gap:10px}.side-heading h3{margin-bottom:8px}.side-heading a{font-size:12px;color:var(--blue)}.requests a{padding:13px 0;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #edf0f3;font-size:13px;line-height:1.8;gap:14px;overflow-wrap:anywhere}.requests a:last-child{border-bottom:0;padding-bottom:0}.requests svg{width:14px;color:#9aa7b2}.side-note{font-size:13px;color:var(--muted);line-height:1.9}.tags{display:flex;flex-wrap:wrap;gap:8px}.tag{font-size:12px;background:#f5f7f9;border-radius:4px;padding:4px 9px;color:#647789}.crumb{font-size:13px;color:var(--muted);margin-bottom:20px;display:flex;gap:12px;align-items:center}.pagehead{margin-bottom:25px}.pagehead h1{font-size:28px;font-weight:600;margin-bottom:6px}.pagehead p{font-size:14px;color:var(--muted)}.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}.filter{border:1px solid transparent;border-radius:5px;padding:7px 14px;font-size:13px;color:var(--muted)}.filter.active{color:var(--blue);background:#edf4fb;border-color:#dce9f4}.pagination{display:flex;justify-content:center;gap:8px;padding:25px 0 5px}.pagination button{width:36px;height:36px;border:1px solid var(--line);border-radius:5px;background:white;font-size:13px}.pagination button.active{color:var(--blue);background:var(--pale);border-color:#cfdfed}.article{padding:36px 42px}.article-head{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:26px}.article-head h1{font-size:29px;font-weight:600;line-height:1.6;letter-spacing:-.5px;margin:10px 0 18px;max-width:800px}.article-head .meta{font-size:13px}.article-head .meta time{margin:0}.article-body{font-size:16px;line-height:2.05}.article-body p{margin:16px 0}.article-links{display:flex;gap:22px;font-size:14px;flex-wrap:wrap}.article-links a{color:var(--blue)}.download{border:1px solid var(--line);border-radius:7px;margin:24px 0;background:#fafbfc;padding:0 18px}.download-row{display:flex;align-items:center;gap:13px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}.download-row:last-child{border-bottom:0}.download-row>svg{color:#7294af}.download-row .file{flex:1;min-width:0}.download-row small{font-size:12px;margin-left:10px}.download-row .btn{font-size:12px;min-height:34px;padding:5px 12px;background:white}.article-picture{margin:28px 0}.article-picture img{width:100%;border-radius:6px;border:1px solid var(--line)}.article-picture figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:9px}.workorder{border-top:1px solid var(--line);margin-top:30px;padding-top:25px;font-size:14px}.work-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:15px}.work-heading h2{font-size:19px}.work-heading small{font-size:12px}.work-login{display:flex;align-items:center;justify-content:space-between;gap:24px;background:#f7f9fb;border-radius:6px;padding:20px 22px}.work-login p{font-size:13px;color:var(--muted);margin-top:3px;line-height:1.85}.work-login .btn{flex-shrink:0}.workorder textarea{width:100%;resize:vertical;min-height:105px;background:#fafbfc;border:1px solid #dfe5eb;border-radius:6px;padding:14px;font-size:14px;margin:12px 0;color:var(--ink)}.work-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.work-toolbar select{font-size:13px;border:1px solid #dce3ea;border-radius:5px;background:white;padding:7px 10px}.work-toolbar small{font-size:12px}.workhistory{border-left:2px solid #c7dbec;padding:10px 16px;background:#f7f9fb;margin:16px 0;font-size:13px}.workhistory p{margin-top:5px;color:var(--muted)}.shareline{display:flex;align-items:center;gap:20px;border-top:1px solid var(--line);padding-top:22px;margin-top:28px}.shareline button{font-size:13px;display:flex;gap:7px;align-items:center;color:#6b8194}.shareline button svg{width:17px}.related{padding-top:22px;margin-top:22px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:20px}.footer{border-top:1px solid var(--line);padding:28px 0;background:white;font-size:12px;color:var(--muted)}.footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.dialog{padding:0;border:1px solid #e0e7ee;border-radius:12px;width:420px;max-width:calc(100% - 32px);box-shadow:0 20px 80px #1b324029;color:var(--ink)}.dialog::backdrop{background:#25374760;backdrop-filter:blur(3px)}.dialog-inner{padding:32px}.dialog h2{font-size:23px;margin:14px 0 6px}.dialog .subtitle{color:var(--muted);font-size:13px;margin-bottom:24px}.dialog-close{position:absolute;right:14px;top:12px;padding:6px;color:var(--muted)}.dialog label{display:block;font-size:13px;margin:14px 0 5px}.dialog input{width:100%;border:1px solid #d9e1e8;border-radius:6px;padding:10px 12px;font-size:14px}.dialog .btn{width:100%;margin-top:22px}.dialog .demo-note{font-size:12px;line-height:1.8;background:#f5f8fb;padding:10px 12px;margin:20px 0 0;color:#6c7f90;border-radius:5px}.dialog .switchauth{text-align:center;margin-top:16px;font-size:13px}.dialog .divider{display:flex;align-items:center;gap:12px;color:#94a0ab;font-size:12px;margin-top:20px}.dialog .divider:before,.dialog .divider:after{content:'';height:1px;background:var(--line);flex:1}.dialog .qq{margin-top:12px;background:#f8fafc;color:#4f6f8b}.toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:100;background:#30475b;color:white;padding:12px 20px;border-radius:7px;font-size:13px;box-shadow:0 5px 25px #20354a20;max-width:90%;text-align:center}.toast:empty{display:none}.empty{padding:45px 15px;text-align:center;color:var(--muted)}.hero-serial{display:none}
.heroimg img{object-fit:contain;height:auto}.v2 .heroimg img,.v4 .heroimg img{height:auto}.v5 .heroimg img{object-fit:contain}

/* 01：按原站颜色还原中性灰外围与整块白色主体，保留新版留白。 */
body.v1{--ink:#333;--muted:#777;--blue:#337ab7;--pale:#f5f5f5;--line:#e5e5e5;--bg:#f1f1f1}
.v1 .layout{background:#fff;border-radius:10px;margin-top:24px;margin-bottom:35px;padding:28px;gap:32px}
.v1 .previewbar{background:#f5f5f5;border-color:#e5e5e5;color:#777}.v1 .previewname strong{color:#555}.v1 .previewtools select{color:#666}
.v1 .hero{background:#f5f5f5}.v1 .hero p{color:#777}.v1 .heroimg{box-shadow:none;border-color:#fff}.v1 .herofoot span{background:#ccc}.v1 .herofoot span:first-child{background:#888}
.v1 .shortcuts{border:0;border-bottom:1px solid #e5e5e5;border-radius:0;padding:21px 0;margin-top:10px}.v1 .tileicon,.v1 .post-icon,.v1 .avatar{background:#f5f5f5}
.v1 .feed{border:0;padding:12px 0 0}.v1 .sidebox{border-color:#e5e5e5}.v1 .contact{background:#f5f5f5}.v1 .contact small,.v1 .post p,.v1 .meta,.v1 .meta .category{color:#777}
.v1 .requests a{border-color:#eee}.v1 .tag,.v1 .work-login,.v1 .workhistory{background:#f5f5f5;color:#666}.v1 .workhistory{border-color:#ddd}.v1 .tags .tag:hover{color:var(--blue)}
.v1 .article{border:0;padding:6px 10px}.v1 .download,.v1 .workorder textarea{background:#fafafa;border-color:#e5e5e5}.v1 .btn{border-color:#ddd}.v1 .btn:hover{background:#f5f5f5;border-color:#bbb}.v1 .btn.primary{background:#337ab7;border-color:#337ab7}.v1 .btn.primary:hover{background:#286090;border-color:#286090}
.v1 .filter.active{background:#f5f5f5;border-color:#ddd}.v1 .pagination button.active{background:#f5f5f5;border-color:#ddd}.v1 .search,.v1 .dropdown-menu{border-color:#ddd}.v1 .dropdown-menu{box-shadow:0 8px 22px #00000012}.v1 .dialog{border-color:#ddd;box-shadow:0 20px 80px #00000029}.v1 .dialog::backdrop{background:#00000055}.v1 .dialog input{border-color:#ddd}.v1 .dialog .demo-note,.v1 .dialog .qq{background:#f5f5f5;color:#777}.v1 .toast{background:#444}.v1 .footer{border-color:#e5e5e5}
@media(max-width:1100px){.v1 .layout{padding:24px;gap:24px}}
@media(max-width:900px){.v1 .layout{width:calc(100% - 20px);margin-top:14px;padding:18px 14px;gap:28px}.v1 .article{padding:0 3px}.v1 .hero{padding:23px 20px}.v1 .nav .dropdown-menu{background:#fafafa}.v1 .shortcuts{padding:20px 0}.v1 .feed{padding:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}


/* 经典方案：桌面菜单从导航下缘向下滑出，移开后平滑收起。 */
@media(min-width:901px){
 .v1 .dropdown .dropdown-menu{display:block;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-16px);clip-path:inset(0 -24px 100% -24px);transition:transform .24s ease,clip-path .24s ease,opacity .18s ease,visibility 0s linear .24s}
 .v1 .dropdown.open .dropdown-menu{visibility:visible;pointer-events:auto;opacity:1;transform:translateY(0);clip-path:inset(0 -24px -32px -24px);transition-delay:0s}
}