*{box-sizing:border-box;margin:0;padding:0}:root{--pink: #fb7299;--pink-dark: #e85a85;--bg: #f6f7f9;--text: #18191c;--muted: #9499a0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}.page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px}.card{width:100%;max-width:520px;background:#fff;border-radius:16px;padding:36px 32px;box-shadow:0 8px 32px #0000000f}h1{font-size:26px;margin-bottom:8px}.subtitle{color:var(--muted);font-size:14px;line-height:1.6;margin-bottom:24px}.form{display:flex;gap:10px;flex-wrap:wrap}.form input{flex:1;min-width:200px;padding:12px 14px;font-size:15px;border:1.5px solid #e3e5e7;border-radius:10px;outline:none;transition:border-color .15s}.form input:focus{border-color:var(--pink)}.form button{padding:12px 22px;font-size:15px;font-weight:600;color:#fff;background:var(--pink);border:none;border-radius:10px;cursor:pointer;transition:background .15s}.form button:hover:not(:disabled){background:var(--pink-dark)}.form button:disabled{opacity:.55;cursor:not-allowed}.hint{margin-top:18px;color:var(--muted);font-size:14px}.error{margin-top:18px;padding:12px 14px;background:#fef0f0;color:#d03050;border-radius:10px;font-size:14px}.result{margin-top:24px;padding:20px;background:#fafbfc;border:1px solid #eef0f2;border-radius:12px}.result-title{font-size:16px;font-weight:600;line-height:1.5;word-break:break-all}.result-meta{margin-top:6px;color:var(--muted);font-size:13px}.download-btn{display:inline-block;margin-top:16px;padding:11px 24px;background:var(--pink);color:#fff;text-decoration:none;border-radius:10px;font-weight:600;font-size:15px;transition:background .15s}.download-btn:hover{background:var(--pink-dark)}.countdown{margin-top:14px;font-size:13px;color:var(--muted)}.countdown span{font-variant-numeric:tabular-nums;font-weight:600;color:var(--text)}footer{margin-top:24px;color:var(--muted);font-size:12px}