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:root{--ink:#173e36;--green:#246f5d;--muted:#66776f;--paper:#f7f7f0;--line:#dce4d8;--orange:#b95b38;--soft:#edf2e7;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Microsoft YaHei",sans-serif}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto}header{border-bottom:1px solid var(--line);background:#ffffffeb;position:sticky;top:0;z-index:5;backdrop-filter:blur(12px)}.shell{max-width:1180px;padding:0 28px;margin:auto}.bar{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:25px}.site-name{font-size:20px;font-weight:700;letter-spacing:.03em;color:var(--ink)}.site-name small{display:block;font:11px/1.5 system-ui;color:var(--muted);letter-spacing:.16em}.nav{display:flex;gap:23px;align-items:center;font-size:14px}.nav 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@media(max-width:850px){.shell{padding:0 20px}.bar{min-height:76px;flex-wrap:wrap;padding:14px 0;gap:10px}.nav{width:100%;overflow:auto;gap:20px;white-space:nowrap;padding-bottom:5px}.nav .button{padding:6px 13px}.hero{grid-template-columns:1fr;gap:30px;padding:36px 0}.hero h1{font-size:37px}.hero p{font-size:16px}.grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr;gap:20px}.sidebar>div{position:static}.sidebar .button{width:auto;margin-right:10px}.resource-preview{grid-template-columns:1fr}.preview{max-height:470px}.article{padding:24px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.float-contact{left:0;right:0;bottom:0;background:#fffffffa;border-top:1px solid var(--line);padding:10px 18px;display:flex;gap:10px}.float-contact .button{flex:1;padding:11px 10px}.mobile-call{display:inline-flex}.band{padding:26px}.section-head{align-items:start;flex-direction:column;gap:8px}}
@media(max-width:520px){.grid{grid-template-columns:1fr}.site-name{font-size:17px}.hero h1{font-size:34px}.work-card{padding:24px}.fields{grid-template-columns:1fr}.fields .full{grid-column:auto}.modal-inner{padding:24px}.contact-card{gap:16px}.contact-card img{width:110px}.contact-card strong{font-size:16px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.page-title{font-size:29px}.article{padding:22px 18px}.question{padding:20px 0}.section{padding:26px 0}.section-head h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.card{transition:none}}:focus-visible{outline:3px solid #df9767;outline-offset:3px}
.editor-info{margin:18px 0 22px;padding:16px 18px;border:1px solid #dce7df;border-left:3px solid #367b63;border-radius:8px;background:#f1f6f1;display:grid;grid-template-columns:1fr 1fr;gap:9px 18px;font-size:12px;line-height:1.7;color:#3d5c50}.editor-info span{display:block;min-width:0;overflow-wrap:anywhere}.editor-info b{display:block;font-size:12px;color:#234a3b}.editor-info a{text-decoration:underline;text-underline-offset:3px}.direct-answer{border-left:3px solid #b98657;padding-left:18px}.faq-block{max-width:840px}.faq-block h2{font-size:24px}.back-topic{border-top:1px solid #dce7df}.back-topic p{color:#627268;font-size:14px}.tool-explainer{margin-bottom:28px;border-bottom:1px solid #dce7df;padding-bottom:22px}.tool-explainer h2{margin-top:0}.notice{padding:14px 18px;background:#fff5e6;border-left:3px solid #b98657;margin:18px 0;line-height:1.8;font-size:14px}.breadcrumb{font-size:13px;line-height:1.7;margin:24px 0 16px;padding:0;overflow-wrap:anywhere}.article li{margin-bottom:10px}.hero .editor-info{grid-template-columns:1fr}.hero .breadcrumb{margin-top:0}.hero .editor-info b{display:inline;margin-right:7px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{border:1px solid #dce7df;padding:10px;text-align:left;vertical-align:top}@media(max-width:650px){.editor-info{grid-template-columns:1fr;padding:13px 14px}.editor-info b{display:inline;margin-right:6px}.breadcrumb{margin-top:20px}.faq-block{padding-top:20px}.direct-answer{padding-left:12px}}@media(min-width:850px){.nav{gap:16px;font-size:14px}}
@media(max-width:520px){.float-contact .button{font-size:13px;min-height:44px;min-width:0}.contact-card{display:grid;grid-template-columns:100px minmax(0,1fr)}.contact-card img{width:100px}.contact-card strong{font-size:14px;overflow-wrap:anywhere}.contact-card .button{font-size:13px;width:100%;padding:10px 6px;margin-top:6px;min-height:44px}}
@media(max-width:850px){header .shell.bar{padding:14px 20px}.nav{scrollbar-width:thin}}
@media(max-width:520px){.float-contact .button{font-size:12px;padding:11px 6px;white-space:nowrap}}