:root{--blue:#155eef;--navy:#102a56;--ink:#182230;--muted:#667085;--line:#e4e7ec;--bg:#f6f8fc;--green:#12b76a;--orange:#f79009}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.55 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}.shell{min-height:100vh}.top{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 max(20px,calc((100vw - 1180px)/2));justify-content:space-between;position:sticky;top:0;z-index:5}.brand{font-size:19px;font-weight:800;color:var(--navy);display:flex;gap:10px;align-items:center}.mark{display:grid;place-items:center;width:30px;height:30px;border-radius:10px;background:var(--blue);color:#fff}.userbar{display:flex;gap:12px;align-items:center;color:var(--muted)}.link{color:var(--blue);background:transparent}.layout{max-width:1180px;margin:auto;padding:28px 20px}.hero{padding:55px 0 32px;display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}.hero h1{font-size:44px;letter-spacing:-2px;line-height:1.15;margin:0 0 18px;color:var(--navy)}.hero p{color:var(--muted);font-size:17px;max-width:520px}.hero img{width:100%;max-height:350px;object-fit:contain}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card,.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 8px 24px #172b4d0a}.card b{display:block;margin:8px 0;font-size:16px}.muted{color:var(--muted)}.auth{max-width:460px;margin:48px auto}.auth h1{font-size:30px;color:var(--navy);margin-bottom:4px}.tabs{display:flex;gap:6px;background:#eef2f8;border-radius:12px;padding:4px;margin:22px 0}.tabs button{flex:1;background:transparent;padding:9px;border-radius:9px;color:var(--muted)}.tabs .active{background:#fff;color:var(--blue);box-shadow:0 1px 3px #0001}.field{display:grid;gap:6px;margin:13px 0;font-weight:600}.field input,.field textarea,.field select{width:100%;border:1px solid #d0d5dd;border-radius:10px;padding:11px;background:#fff;font-weight:400}.field textarea{min-height:95px;resize:vertical}.primary,.secondary,.danger{border-radius:10px;padding:11px 15px;font-weight:700}.primary{background:var(--blue);color:#fff}.secondary{background:#eff4ff;color:var(--blue)}.danger{background:#fef3f2;color:#b42318}.full{width:100%;margin-top:10px}.notice{padding:10px 12px;border-radius:10px;background:#fffaeb;color:#93370d;margin:12px 0}.error{background:#fef3f2;color:#b42318}.dash{display:grid;grid-template-columns:230px 1fr;gap:20px}.side{background:var(--navy);border-radius:16px;padding:15px;height:max-content;color:#fff}.side button{width:100%;text-align:left;background:transparent;color:#c9d7f5;padding:12px;border-radius:9px}.side .active{background:#244a86;color:#fff}.main h1{font-size:26px;margin:0}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;gap:12px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0}.stat{padding:15px;background:#fff;border:1px solid var(--line);border-radius:14px}.stat b{font-size:25px;display:block;color:var(--navy)}.ticket{padding:16px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:14px}.ticket:last-child{border:0}.ticket h3{margin:0 0 4px;font-size:16px}.badge{display:inline-block;padding:3px 8px;border-radius:99px;font-size:12px;background:#eff4ff;color:#175cd3}.badge.open{background:#fff4e5;color:#b54708}.badge.resolved{background:#ecfdf3;color:#027a48}.message{padding:11px 13px;border-radius:12px;background:#f2f4f7;margin:9px 0;max-width:80%}.message.mine{background:#eff4ff;margin-left:auto}.message small{display:block;color:var(--muted);margin-top:3px}.actions{display:flex;gap:8px;flex-wrap:wrap}.empty{padding:32px;text-align:center;color:var(--muted)}.mobile-nav{display:none}.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.guide li{margin:10px 0}.footer{text-align:center;color:var(--muted);padding:30px 0}.small{font-size:12px}@media(max-width:720px){.top{padding:0 16px}.brand{font-size:17px}.layout{padding:18px 14px}.hero{grid-template-columns:1fr;padding:30px 0}.hero h1{font-size:34px}.hero img{max-height:250px;order:-1}.cards,.stats,.two{grid-template-columns:1fr}.dash{display:block}.side{display:flex;overflow:auto;padding:8px;margin-bottom:16px}.side button{white-space:nowrap;width:auto}.ticket{display:block}.ticket .actions{margin-top:10px}.mobile-nav{display:flex}.userbar span{display:none}.auth{margin:22px auto}.message{max-width:95%}}