:root{--ink:#183247;--muted:#617586;--blue:#176da8;--bluebg:#eef7fd;--green:#28775b;--greenbg:#eef9f4;--orange:#bd6a20;--orangebg:#fff7ed;--line:#8ba7b9}*{box-sizing:border-box}body{margin:0;background:#eef2f5;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.65}header{background:#173e5c;color:#fff}nav{max-width:1380px;margin:auto;padding:14px 24px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}nav a{color:#dceaf3;text-decoration:none}nav a:hover{color:#fff}.brand{font-weight:800;margin-right:auto}main{max-width:1380px;margin:22px auto;padding:34px;background:#fff;box-shadow:0 5px 24px #1832471c}h1{margin:0;font-size:30px}h2{margin:42px 0 15px;padding-bottom:8px;border-bottom:2px solid #d9e5ec;font-size:23px}.meta{color:var(--muted)}.notice{padding:12px 15px;background:#fff8e7;border-left:5px solid #daa13b}.chart{margin:16px 0;padding:22px 14px;overflow-x:auto;border:1px solid #d7e4ec;border-radius:10px;background:#fbfdff}.flow{display:flex;align-items:center;justify-content:center;gap:8px;min-width:max-content}.node{min-width:170px;max-width:230px;padding:14px;text-align:center;border:2px solid var(--blue);border-radius:9px;background:var(--bluebg);font-weight:700}.node small{display:block;color:var(--muted);font-weight:400}.node.green{border-color:var(--green);background:var(--greenbg)}.arrow{color:var(--line);font-size:27px;font-weight:700}.back{text-align:center;margin-top:13px;padding-top:8px;border-top:2px dashed var(--green);color:var(--green);font-weight:700}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.card{padding:18px;border:1px solid #cadce7;border-radius:10px;background:#fbfdff}.card h3{margin-top:0;color:var(--blue)}.card a{display:inline-block;margin-top:8px;color:var(--blue);font-weight:700}.stage{margin:22px 0;border:1px solid #cbdce6;border-radius:11px;overflow:hidden}.stage h3{margin:0;padding:14px 18px;background:#173e5c;color:#fff}.cols{display:grid;grid-template-columns:repeat(3,1fr)}.cell{padding:15px;border-right:1px solid #d8e4eb;border-top:1px solid #d8e4eb}.cell:nth-child(3n){border-right:0}.cell h4{margin:0 0 7px;color:var(--blue)}.cell ul{margin:0;padding-left:20px}.driver{padding:13px 16px;border-left:5px solid var(--orange);background:var(--orangebg)}table{width:100%;border-collapse:collapse}th,td{border:1px solid #d3e0e7;padding:10px;text-align:left;vertical-align:top}th{background:#edf5fa}footer{max-width:1380px;margin:0 auto 25px;color:var(--muted);padding:0 20px}@media(max-width:850px){main{margin:0;padding:18px}.grid,.cols{grid-template-columns:1fr}.cell{border-right:0}.flow{justify-content:flex-start}.brand{width:100%}}