.mtdc{--ink:#111827;--muted:#6b7280;--line:#e5e7eb;--soft:#f8fafc;--blue:#2563eb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);width:100%;box-sizing:border-box}.mtdc *{box-sizing:border-box}.mtdc-card{width:min(920px,calc(100% - 24px));margin:32px auto;padding:clamp(18px,3vw,34px);background:#fff;border:1px solid rgba(15,23,42,.08);border-radius:28px;box-shadow:0 18px 60px rgba(15,23,42,.08)}.mtdc-head{text-align:center;margin-bottom:22px}.mtdc-kicker{display:inline-flex;padding:7px 11px;border-radius:999px;background:#eef4ff;color:#2456b8;font-size:12px;font-weight:800;letter-spacing:.04em}.mtdc-head h2{margin:13px 0 8px;font-size:clamp(28px,4vw,44px);line-height:1.05;letter-spacing:-.04em}.mtdc-head p{margin:0;color:var(--muted);font-size:15px}.mtdc-tabs{display:grid;grid-template-columns:1fr 1fr;background:#f1f5f9;padding:5px;border-radius:16px;margin:24px auto;max-width:470px}.mtdc-tab{border:0;background:transparent;padding:12px 14px;border-radius:12px;font-weight:800;color:#64748b;cursor:pointer}.mtdc-tab.is-active{background:#fff;color:#0f172a;box-shadow:0 3px 12px rgba(15,23,42,.08)}.mtdc-drop{display:flex;min-height:210px;align-items:center;justify-content:center;flex-direction:column;text-align:center;border:1.5px dashed #cbd5e1;border-radius:22px;background:linear-gradient(180deg,#fbfdff,#f8fafc);padding:28px;cursor:pointer;transition:.2s}.mtdc-drop:hover,.mtdc-drop.is-drag{border-color:#6697ef;background:#f3f7ff;transform:translateY(-1px)}.mtdc-drop input{display:none}.mtdc-drop-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:#111827;color:#fff;font-size:28px;line-height:1;margin-bottom:13px}.mtdc-drop strong{font-size:17px}.mtdc-drop-sub{margin-top:8px;color:#64748b}.mtdc-files{margin-top:14px;border:1px solid var(--line);border-radius:18px;overflow:hidden}.mtdc-file-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 15px;border-bottom:1px solid var(--line)}.mtdc-file-row:last-child{border-bottom:0}.mtdc-file-row div{min-width:0}.mtdc-file-row strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}.mtdc-file-row span{display:block;color:#64748b;font-size:12px;margin-top:3px}.mtdc-file-row button{border:0;background:#f1f5f9;width:32px;height:32px;border-radius:10px;cursor:pointer;font-size:20px}.mtdc-options{display:flex;align-items:stretch;justify-content:space-between;gap:12px;margin-top:16px}.mtdc-quality-wrap,.mtdc-limit{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:54px;padding:9px 13px;border:1px solid var(--line);border-radius:15px;background:#fff}.mtdc-quality-wrap span,.mtdc-limit span{font-size:13px;color:#64748b;font-weight:700}.mtdc-quality{border:0;background:#f8fafc;border-radius:9px;padding:8px;font-weight:700;outline:none}.mtdc-limit strong{font-size:14px}.mtdc-convert{width:100%;margin-top:14px;border:0;border-radius:15px;padding:15px 18px;background:#111827;color:#fff;font-size:15px;font-weight:850;cursor:pointer;transition:.2s}.mtdc-convert:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 28px rgba(17,24,39,.18)}.mtdc-convert:disabled{opacity:.45;cursor:not-allowed}.mtdc-progress{margin-top:16px;padding:15px;border-radius:16px;background:#f8fafc}.mtdc-progress-row{display:flex;justify-content:space-between;gap:12px;font-size:13px;margin-bottom:9px}.mtdc-progress-track{height:8px;background:#e5e7eb;border-radius:999px;overflow:hidden}.mtdc-progress-track i{display:block;height:100%;width:0;background:#111827;border-radius:inherit;transition:width .2s}.mtdc-message{margin-top:14px;padding:13px 15px;border-radius:14px;font-size:14px}.mtdc-message.error{background:#fff1f2;color:#9f1239;border:1px solid #fecdd3}.mtdc-success{margin-top:14px;padding:16px;border:1px solid #bbf7d0;background:#f0fdf4;border-radius:16px;display:flex;align-items:center;gap:12px}.mtdc-success strong{color:#166534}.mtdc-success span{color:#3f6212;font-size:14px}.mtdc-foot{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 18px;margin-top:20px;color:#64748b;font-size:12px}.mtdc-maint{padding:32px;text-align:center;background:#fff7ed;border:1px solid #fed7aa;border-radius:20px;margin:18px 0}.mtdc-maint-icon{font-size:32px;margin-bottom:8px}.mtdc-maint strong,.mtdc-maint span{display:block}.mtdc-maint span{margin-top:6px;color:#9a3412;font-size:14px}@media(max-width:640px){.mtdc-card{width:min(100% - 16px,920px);margin:16px auto;border-radius:22px;padding:16px}.mtdc-head h2{font-size:30px}.mtdc-drop{min-height:180px;padding:22px 15px}.mtdc-options{flex-direction:column}.mtdc-quality-wrap,.mtdc-limit{width:100%}.mtdc-foot{justify-content:flex-start;flex-direction:column;gap:6px}}