:root{--ink:#1b2630;--steel:#123e5e;--steel-d:#0c2c44;--accent:#d8622a;--paper:#f3f5f7;--card:#ffffff;--line:#d5dde4;--muted:#5a6a79;--ok:#2f6b4f}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Source Han Sans SC",sans-serif;font-size:16px;line-height:1.75}
a{color:var(--steel);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
h1{font-size:30px}h2{font-size:22px}h3{font-size:17px}h4{font-size:16px}
p{margin:0 0 14px}
img{max-width:100%;height:auto;border:0;display:block}
ul,ol{margin:0;padding:0}
.qm4t-wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.qm4t-topbar{background:var(--steel-d);color:#dbe7ef;font-size:13px;line-height:34px}
.qm4t-topbar .qm4t-wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.qm4t-topbar span{white-space:nowrap}
.qm4t-head{background:#fff;border-bottom:3px solid var(--steel);position:sticky;top:0;z-index:20}
.qm4t-headin{display:flex;align-items:center;gap:18px;padding:10px 20px;max-width:1180px;margin:0 auto;position:relative;flex-wrap:wrap}
.qm4t-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.qm4t-logo img{width:46px;height:46px}
.qm4t-logotext{font-size:15px;font-weight:700;color:var(--steel);line-height:1.3;max-width:330px}
.qm4t-logotext em{display:block;font-style:normal;font-size:12px;color:var(--muted);font-weight:400;letter-spacing:1px}
.qm4t-nav{margin-left:auto}
.qm4t-nav ul{display:flex;flex-wrap:wrap;gap:2px;list-style:none}
.qm4t-nav a{display:block;padding:8px 11px;font-size:15px;color:var(--ink);border-bottom:3px solid transparent}
.qm4t-nav a:hover{border-bottom-color:var(--accent);color:var(--steel)}
.qm4t-nav a.qm4t-on{border-bottom-color:var(--steel);color:var(--steel);font-weight:700}
.qm4t-burger{display:none}
.qm4t-main{padding:26px 0 40px}
.qm4t-sec{margin:0 0 34px}
.qm4t-sechead{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:18px}
.qm4t-sechead h2{border-left:5px solid var(--accent);padding-left:10px}
.qm4t-sechead span{font-size:13px;color:var(--muted)}
.qm4t-hero{background:var(--steel);color:#fff}
.qm4t-heroin{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center;max-width:1180px;margin:0 auto;padding:22px 20px}
.qm4t-hero h1{color:#fff;font-size:30px;margin-bottom:12px}
.qm4t-hero p{color:#d7e4ee;font-size:15px}
.qm4t-heroimg{position:relative}
.qm4t-heroimg img{width:100%;height:auto;border:1px solid rgba(255,255,255,.25)}
.qm4t-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0 18px}
.qm4t-stat{background:rgba(255,255,255,.10);border-left:3px solid var(--accent);padding:9px 11px}
.qm4t-stat b{display:block;font-size:17px;color:#fff}
.qm4t-stat i{font-style:normal;font-size:12px;color:#bcd2e2}
.qm4t-btn{display:inline-block;background:var(--accent);color:#fff;padding:10px 20px;font-size:15px;border-radius:2px}
.qm4t-btn:hover{background:#c1541f;color:#fff}
.qm4t-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.qm4t-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.qm4t-grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.qm4t-card{background:var(--card);border:1px solid var(--line);padding:16px;display:flex;flex-direction:column;gap:8px}
.qm4t-card h3{color:var(--steel)}
.qm4t-card p{margin:0;font-size:14px;color:#3d4a56}
.qm4t-card a{font-size:13px;color:var(--accent)}
.qm4t-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.qm4t-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff;border:1px solid var(--line)}
.qm4t-table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
.qm4t-table caption{text-align:left;padding:10px 12px;font-size:14px;color:var(--muted)}
.qm4t-table th,.qm4t-table td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
.qm4t-table thead th{background:var(--steel);color:#fff;font-weight:700;white-space:nowrap}
.qm4t-table tbody tr:nth-child(2n){background:#f8fafb}
.qm4t-list{list-style:none}
.qm4t-list li{border-bottom:1px dashed var(--line);padding:11px 0;display:flex;gap:14px;align-items:baseline}
.qm4t-list time{color:var(--muted);font-size:13px;flex:0 0 92px}
.qm4t-list a{font-size:15px}
.qm4t-flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:1px solid var(--line);background:#fff}
.qm4t-step{padding:14px 12px;border-right:1px solid var(--line)}
.qm4t-step:last-child{border-right:0}
.qm4t-step b{display:block;color:var(--accent);font-size:13px;letter-spacing:1px}
.qm4t-step h3{font-size:15px;margin:4px 0 6px}
.qm4t-step p{font-size:13px;margin:0;color:#455565}
.qm4t-scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.qm4t-scene{background:#fff;border-top:4px solid var(--steel);padding:14px}
.qm4t-scene h3{font-size:16px;margin-bottom:6px}
.qm4t-scene p{font-size:13.5px;margin:0;color:#3d4a56}
.qm4t-crumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.qm4t-crumb a{color:var(--muted)}
.qm4t-crumb a:hover{color:var(--accent)}
.qm4t-art{background:#fff;border:1px solid var(--line);padding:24px}
.qm4t-meta{font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:16px}
.qm4t-art p{font-size:15.5px;color:#2c3945}
.qm4t-lead{font-size:16.5px;color:#1b2630;border-left:4px solid var(--accent);padding-left:12px;background:#f8fafb}
.qm4t-fig{margin:18px 0}
.qm4t-fig img{width:100%;aspect-ratio:16/9;object-fit:cover;border:1px solid var(--line)}
.qm4t-fig figcaption{font-size:13px;color:var(--muted);padding-top:6px}
.qm4t-cta{background:var(--steel);color:#fff;padding:18px 20px;display:flex;justify-content:space-between;gap:16px;align-items:center;flex-wrap:wrap}
.qm4t-cta p{margin:0;color:#d7e4ee;font-size:14px}
.qm4t-cta a{color:#fff}
.qm4t-faq{margin-top:8px}
.qm4t-faq details{background:#fff;border:1px solid var(--line);padding:12px 14px;margin-bottom:10px}
.qm4t-faq summary{cursor:pointer;font-weight:700;color:var(--steel);font-size:15px}
.qm4t-faq p{margin:8px 0 0;font-size:14.5px}
.qm4t-foot{background:var(--steel-d);color:#c4d5e2;font-size:13.5px;padding:28px 0 18px;margin-top:10px}
.qm4t-footin{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:22px;max-width:1180px;margin:0 auto;padding:0 20px}
.qm4t-foot h3{color:#fff;font-size:15px;margin-bottom:10px}
.qm4t-foot ul{list-style:none}
.qm4t-foot li{padding:3px 0}
.qm4t-foot a{color:#c4d5e2}
.qm4t-foot a:hover{color:#fff}
.qm4t-copy{max-width:1180px;margin:16px auto 0;padding:12px 20px 0;border-top:1px solid #24506e;font-size:12.5px;color:#93acc0}
.qm4t-copy p{margin:0}
.pg404{text-align:center;padding:40px 0}
@media (max-width:1100px){
  .qm4t-grid4{grid-template-columns:repeat(2,1fr)}
  .qm4t-flow{grid-template-columns:repeat(3,1fr)}
  .qm4t-heroin{grid-template-columns:1fr}
  .qm4t-hero h1{font-size:26px}
  .qm4t-footin{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .qm4t-nav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:2px solid var(--steel);display:none;margin:0;box-shadow:0 8px 14px rgba(0,0,0,.08)}
  .qm4t-nav ul{flex-direction:column;gap:0;padding:6px 0}
  .qm4t-nav a{padding:11px 20px;border-bottom:1px solid var(--line)}
  .qm4t-nav a.qm4t-on{border-bottom:1px solid var(--line);background:#eef3f7}
  .qm4t-burger{display:block;margin-left:auto}
  .qm4t-burger input{position:absolute;opacity:0;width:24px;height:24px;margin:0}
  .qm4t-burger label{display:inline-block;border:1px solid var(--steel);color:var(--steel);padding:6px 12px;font-size:14px;cursor:pointer}
  .qm4t-burger input:checked ~ .qm4t-nav{display:block}
  .qm4t-headin{gap:10px;padding:8px 16px}
  .qm4t-logotext{font-size:13.5px;max-width:200px}
  .qm4t-grid3,.qm4t-scenes{grid-template-columns:1fr 1fr}
  .qm4t-stats{grid-template-columns:1fr}
  .qm4t-flow{grid-template-columns:1fr 1fr}
  .qm4t-sechead{flex-direction:column;align-items:flex-start;gap:4px}
  .qm4t-art{padding:16px}
  h1{font-size:24px}
  .qm4t-hero h1{font-size:22px}
}
@media (max-width:600px){
  body{font-size:15px}
  .qm4t-wrap,.qm4t-heroin,.qm4t-headin,.qm4t-footin{padding-left:14px;padding-right:14px}
  .qm4t-grid4,.qm4t-grid3,.qm4t-grid2,.qm4t-scenes,.qm4t-flow{grid-template-columns:1fr}
  .qm4t-logo img{width:38px;height:38px}
  .qm4t-list li{flex-direction:column;gap:2px}
  .qm4t-list time{flex:none}
  .qm4t-table{font-size:13px}
  .qm4t-footin{grid-template-columns:1fr}
  .qm4t-cta{flex-direction:column;align-items:flex-start}
  .qm4t-topbar span{white-space:normal;display:block;max-width:100%;word-break:break-word}
  .qm4t-topbar .qm4t-wrap{gap:0}
}
@media (max-width:380px){
  body{font-size:14.5px}
  .qm4t-hero h1{font-size:20px}
  .qm4t-table th,.qm4t-table td{padding:7px 8px}
  .qm4t-logotext{max-width:150px;font-size:12.5px}
  .qm4t-btn{padding:9px 14px;font-size:14px}
}