:root{color:#17211d;--ink:#17211d;--green:#0d5c45;--lime:#cbe86b;--line:#d9ddd6;--muted:#64706a;background:#f2f3ef;font-family:Segoe UI,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,select{font:inherit}.hero{background:var(--ink);color:#fff;min-height:370px;position:relative;overflow:hidden}.hero:after{content:"";border:1px solid #ffffff18;border-radius:50%;width:460px;height:460px;position:absolute;top:-190px;right:-90px;box-shadow:0 0 0 90px #ffffff06,0 0 0 180px #ffffff04}.hero-inner{z-index:1;max-width:1120px;margin:auto;padding:34px 24px 66px;position:relative}.brand{letter-spacing:2px;color:#aeb8b2;align-items:center;gap:12px;font:500 11px Consolas,monospace;display:flex}.brand-mark{background:var(--lime);color:var(--ink);letter-spacing:0;padding:8px 7px;font-weight:700}.hero-copy{margin-top:52px}.eyebrow{letter-spacing:2px;color:var(--green);margin:0 0 9px;font:500 11px Consolas,monospace}.eyebrow.light{color:var(--lime)}h1{letter-spacing:-2px;max-width:600px;margin:0;font-size:52px;line-height:1.08}h1 em{color:var(--lime);font-style:normal}.hero-copy>p:last-child{color:#b5beb9;max-width:580px;margin:22px 0 0;line-height:1.8}.formula{border-left:1px solid #ffffff28;padding-left:28px;position:absolute;bottom:66px;right:25px}.formula span{letter-spacing:1.8px;color:#86918b;font:10px Consolas,monospace}.formula code{color:#d7ddd9;margin-top:12px;font:13px/1.7 Consolas,monospace;display:block}main{z-index:2;max-width:1000px;margin:-30px auto 70px;padding:0 24px;position:relative}.disclaimer{background:#e5efbf;border:1px solid #c9da89;align-items:flex-start;gap:14px;max-width:100%;margin-bottom:18px;padding:15px 18px;font-size:13px;display:flex}.disclaimer>span{border:1px solid var(--ink);border-radius:50%;place-items:center;min-width:23px;height:23px;font-weight:700;display:grid}.disclaimer p{overflow-wrap:anywhere;min-width:0;margin:0;line-height:1.6}.card{border:1px solid var(--line);background:#fff;margin-bottom:18px;box-shadow:0 6px 24px #1c2b2410}.step-card{grid-template-columns:72px 1fr;display:grid}.step-number{border-right:1px solid var(--line);color:var(--green);justify-content:center;padding-top:31px;font:500 18px Consolas,monospace;display:flex}.step-number.complete{background:var(--green);color:#fff}.card-content{padding:28px 32px 32px}.section-heading{justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:24px;display:flex}h2{letter-spacing:-.4px;margin:0;font-size:23px}.hint{color:var(--muted);padding-top:7px;font-size:12px}.upload-row{gap:12px;display:flex}.file-picker{cursor:pointer;min-height:54px;color:var(--muted);background:#fafbf9;border:1px dashed #aab3ad;flex:1;align-items:center;gap:12px;padding:0 17px;display:flex;position:relative}.file-picker:hover,.file-picker:focus-within{border-color:var(--green);color:var(--green);box-shadow:0 0 0 2px #0d5c4514}.file-picker input{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.file-icon{color:var(--green);font-size:22px}.button{cursor:pointer;border:0;justify-content:center;align-items:center;min-height:48px;padding:0 23px;font-size:14px;font-weight:600;text-decoration:none;transition:all .18s;display:inline-flex}.button.primary{background:var(--green);color:#fff}.button.primary:hover:not(:disabled){background:#094a37}.button.secondary{border:1px solid var(--line);color:var(--ink);background:#fff}.button:disabled{cursor:not-allowed;opacity:.48}.info-grid{background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(3,1fr);gap:1px;margin:0;display:grid}.info-grid>div{background:#fafbf9;min-width:0;padding:14px 16px}.info-grid 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32px;display:grid}.result-check{background:var(--green);color:#fff;border-radius:50%;place-items:center;width:43px;height:43px;font-size:20px;display:grid}.result-copy{margin:8px 0 0;font-size:13px}.muted{color:var(--muted);margin:5px 0 0;font-size:12px}.downloads{gap:8px;display:flex}.appear{animation:.28s ease-out appear}@keyframes appear{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}footer{border-top:1px solid var(--line);color:#78817c;letter-spacing:1px;justify-content:space-between;max-width:1000px;margin:0 auto;padding:25px 24px 32px;font:10px Consolas,monospace;display:flex}@media (width<=760px){.hero{min-height:430px}.hero-copy{margin-top:38px}h1{font-size:40px}.formula{border-top:1px solid #ffffff20;border-left:0;margin-top:26px;padding:16px 0 0;position:static}.formula code{display:none}main{padding:0 14px}.step-card{grid-template-columns:46px 1fr}.card-content{padding:22px 18px}.upload-row,.downloads{flex-direction:column}.info-grid{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.form-grid label.wide{grid-column:auto}.result-card{grid-template-columns:auto 1fr}.downloads{grid-column:1/-1}.section-heading{flex-direction:column}.hint{padding:0}footer{flex-direction:column;gap:10px}}@media (width<=460px){.info-grid{grid-template-columns:1fr}.hero-inner{padding-left:20px}.step-number{display:none}.step-card{display:block}}