:root{color:#333;font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;--primary: #3b6feb;--primary-hover: #315fd0;--text-main: #364153;--text-muted: #666;--border: #d1d9e6;--panel: rgba(255, 255, 255, .72)}*{box-sizing:border-box}html,body{margin:0;min-width:320px;min-height:100%}body{background:#eff1f7}button,input{font:inherit}button{border:0}[hidden]{display:none!important}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.app-shell{min-height:100vh;background-color:#eff1f7;background-image:url(/assets/background-gradient.svg);background-position:center top;background-repeat:no-repeat;background-size:cover}.site-header{height:100px;background:#fff;display:flex;align-items:center;justify-content:center}.brand{display:flex;align-items:center;gap:15px;transform:translate(-34.5px)}.brand__logo{display:block;width:54px;height:54px;object-fit:contain}.brand h1{margin:0;color:#333;font-family:Alimama ShuHeiTi,Microsoft YaHei,sans-serif;font-size:34px;font-weight:700;line-height:27px;letter-spacing:5px;white-space:nowrap}.main-content{width:min(1400px,calc(100% - 48px));margin:80px auto 0;display:grid;grid-template-columns:799px 550px;gap:51px;align-items:stretch;padding-bottom:80px}.panel{height:754px;min-height:754px;padding:70px 100px;border-radius:20px;background:var(--panel);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}.upload-panel{padding-right:102px;padding-left:102px}.panel h2{margin:0;color:var(--primary);font-size:22px;font-weight:600;line-height:33px}.upload-intro{margin-top:34px}.upload-intro h3{margin:0;color:#1e2939;font-size:18px;font-weight:600;line-height:24px}.upload-intro p{margin:7px 0 0;color:var(--text-muted);font-size:14px;line-height:20px}.drop-zone{min-height:400px;margin-top:35px;padding:42px 48px 44px;border:2px dashed #a8c4f5;border-radius:12px;background:#f4f8ff;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-main);cursor:pointer;outline:none;transition:border-color .16s ease,background-color .16s ease,box-shadow .16s ease}.drop-zone:hover,.drop-zone:focus-visible,.drop-zone.is-dragging{border-color:var(--primary);background:#edf4ff;box-shadow:0 0 0 4px #3b6feb1a}.drop-zone.has-error{border-color:#ef6b6b}.upload-icon-box{width:96px;height:96px;border-radius:16px;background:#fff;display:grid;place-items:center;box-shadow:0 4px 3px #0000001a,0 2px 2px #0000001a}.upload-icon-box img{width:52px;height:52px}.upload-empty,.selected-file{display:flex;flex-direction:column;align-items:center}.upload-empty strong{margin-top:25px;color:var(--text-main);font-size:20px;font-weight:600;line-height:30px}.upload-empty>span:not(.choose-button){margin-top:3px;color:#99a1af;font-size:15px;line-height:23px}.choose-button{min-width:160px;height:47px;margin-top:27px;padding:0 36px;border-radius:8px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:600;box-shadow:0 4px 7px #3b6feb59}.choose-button img{width:18px;height:18px}.selected-file{width:100%}.selected-file strong{max-width:100%;margin-top:26px;overflow:hidden;color:var(--text-main);font-size:17px;text-overflow:ellipsis;white-space:nowrap}.selected-file>span{margin-top:8px;color:#8792a6;font-size:14px}.remove-file{margin-top:24px;padding:12px 24px;border-radius:8px;background:var(--primary);color:#fff;cursor:pointer}.upload-hint{margin:22px 0 0;color:var(--text-muted);font-size:13px;line-height:20px;text-align:center}.upload-error{text-align:center}.form-panel{padding:70px 90px 70px 80px}.notice{min-height:97px;margin-top:35px;padding:16px;border:1px solid #fcd34d;border-radius:12px;background:#fffbeb;display:flex;align-items:flex-start;gap:12px}.notice>img{width:18px;height:18px;flex:none}.notice strong{display:block;color:#92400e;font-size:13px;line-height:20px}.notice p{margin:4px 0 0;color:#b45309;font-size:12px;line-height:20px}#submit-form{margin-top:62px}.field-group{min-height:96px}.field-group+.field-group{margin-top:0}.field-group label{display:block;margin-bottom:8px;color:var(--text-main);font-size:14px;font-weight:500;line-height:21px}.field-group input{width:100%;height:47px;padding:12px 16px;border:1px solid var(--border);border-radius:8px;outline:none;background:#fff;color:var(--text-main);font-size:14px;transition:border-color .16s ease,box-shadow .16s ease}.field-group input::placeholder{color:#c0c4cc}.field-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #3b6feb1f}.field-group input.invalid{border-color:#ef6b6b}.field-error{min-height:18px;margin:4px 0 0;color:#dc4545;font-size:12px;line-height:18px}.captcha-row{display:grid;grid-template-columns:253px 115px;gap:12px}.captcha-image{height:47px;padding:0;overflow:hidden;border:1px solid #bababa;border-radius:6px;background:#e8e8e8;cursor:pointer}.captcha-image:focus-visible{outline:3px solid rgba(59,111,235,.25);outline-offset:2px}.captcha-image img{display:block;width:115px;height:46px;object-fit:cover}.captcha-image.is-loading img{opacity:.35}.submit-button{width:100%;height:52px;margin-top:80px;border-radius:12px;background:var(--primary);color:#fff;font-size:16px;cursor:pointer;transition:background-color .16s ease,transform .12s ease,box-shadow .16s ease}.submit-button:not(:disabled):hover{background:var(--primary-hover);box-shadow:0 5px 12px #3b6feb40}.submit-button:not(:disabled):active{transform:translateY(1px)}.submit-button:focus-visible{outline:3px solid rgba(59,111,235,.25);outline-offset:3px}.submit-button:disabled{background:#b7b7b7;cursor:not-allowed}.toast{position:fixed;z-index:20;left:50%;bottom:34px;min-width:280px;padding:14px 22px;border-radius:10px;background:#253047;color:#fff;text-align:center;box-shadow:0 10px 30px #141e323d;opacity:0;pointer-events:none;transform:translate(-50%,18px);transition:opacity .18s ease,transform .18s ease}.toast[data-type=error]{background:#b53b3b}.toast.is-visible{opacity:1;transform:translate(-50%)}@media(max-width:1480px){.main-content{width:min(1180px,calc(100% - 40px));grid-template-columns:minmax(620px,1.45fr) minmax(460px,1fr);gap:36px}.upload-panel{padding-inline:76px}.form-panel{padding-inline:58px}.captcha-row{grid-template-columns:minmax(0,1fr) 115px}}@media(max-width:1120px){.site-header{height:88px;padding:0 24px}.brand__logo{width:44px;height:44px}.brand h1{font-size:clamp(22px,3vw,30px);letter-spacing:3px;white-space:normal;text-align:center}.brand{transform:none}.main-content{width:min(799px,calc(100% - 32px));margin-top:40px;grid-template-columns:1fr;gap:28px}.panel{height:auto;min-height:auto}.form-panel{padding-bottom:72px}}@media(max-width:640px){.site-header{height:76px;padding:0 14px}.brand{gap:8px}.brand__logo{width:36px;height:36px}.brand h1{font-size:18px;line-height:1.35;letter-spacing:1px}.main-content{width:calc(100% - 24px);margin-top:24px;padding-bottom:32px}.panel,.upload-panel,.form-panel{padding:32px 20px 40px;border-radius:16px}.panel h2{font-size:20px}.upload-intro{margin-top:26px}.drop-zone{min-height:350px;margin-top:24px;padding-inline:20px}.upload-empty strong{font-size:18px}.upload-empty>span:not(.choose-button){font-size:13px;text-align:center}.notice{margin-top:26px}#submit-form{margin-top:28px}.captcha-row{grid-template-columns:minmax(0,1fr) 104px;gap:8px}.captcha-image img{width:104px}.submit-button{margin-top:34px}}