* { box-sizing: border-box; }
body { margin: 0; background: #e7eef2; color: #1a2b33; font-family: "Segoe UI", "Microsoft YaHei", sans-serif; }
.bench { width: min(1040px, calc(100% - 28px)); margin: 0 auto; padding: 28px 0 12px; display: grid; grid-template-columns: minmax(0, 1fr) 200px; gap: 16px; align-items: start; }
.work { background: #f4f7f6; padding: 22px; border: 1px solid #c5d4dc; }
h1 { margin: 0 0 8px; font-size: 28px; }
.intro { margin: 0 0 16px; color: #3d5560; line-height: 1.6; }
.formats { display: flex; align-items: flex-end; gap: 12px; margin-bottom: 14px; }
.formats label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: #3d5560; }
.formats select { font: inherit; color: #1a2b33; background: #fff; border: 1px solid #9eb4c0; padding: 8px 10px; min-width: 140px; }
.to { padding-bottom: 8px; font-size: 20px; }
.files { display: block; background: #fff; border: 1px solid #9eb4c0; padding: 16px; cursor: pointer; }
.files input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.files.is-over { background: #e7f3f1; }
.file-list, .result-list { list-style: none; margin: 10px 0 0; padding: 0; }
.file-list li, .result-list li { display: flex; justify-content: space-between; gap: 12px; padding: 6px 0; border-bottom: 1px solid #d5e1e6; }
.file-remove { border: 0; background: transparent; color: #0f6e6b; cursor: pointer; font: inherit; }
#convert-btn { margin-top: 14px; border: 0; background: #0f6e6b; color: #fff; padding: 10px 16px; font: inherit; cursor: pointer; }
#convert-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.progress { margin-top: 12px; height: 6px; background: #d5e1e6; }
.progress-bar { height: 100%; width: 0; background: #0f6e6b; }
.status { color: #3d5560; }
.status.is-error, .result-list .is-error { color: #9b1c1c; }
.result-link { color: #0f6e6b; font-weight: 650; }
.side { background: #d5e3ea; padding: 16px; min-height: 220px; display: flex; flex-direction: column; gap: 10px; border: 1px solid #b7c9d2; }
.side p { margin: 0; font-size: 20px; }
.side span { color: #1a2b33; font-size: 14px; line-height: 1.5; }
.side a { margin-top: auto; text-align: center; background: #1a2b33; color: #f4f7f6; text-decoration: none; padding: 10px 8px; }
.foot { width: min(1040px, calc(100% - 28px)); margin: 8px auto 32px; color: #3d5560; }
.related { display: flex; flex-wrap: wrap; gap: 8px 14px; margin: 0; padding: 0; list-style: none; }
.related a { color: #0f6e6b; text-decoration: none; }
@media (max-width: 800px) { .bench { grid-template-columns: 1fr; } .side { min-height: 0; } }