:root{--ink:#13201b;--muted:#5d6a64;--paper:#f4f1e9;--card:#fffdf7;--line:#c8cec8;--green:#1d6b4b;--green2:#c8efd8;--amber:#e7b954;--danger:#a23c37;--shadow:0 20px 55px rgba(25,44,34,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.55}.shell{width:min(1160px,calc(100% - 36px));margin-inline:auto}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:72px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;color:var(--ink);text-decoration:none;font-weight:800}.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:#fff;border-radius:50%}.topbar nav{display:flex;gap:22px}.topbar a{color:inherit}.hero{padding:88px 0 64px}.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:.74rem;font-weight:800;color:var(--green)}h1{max-width:900px;margin:14px 0;font-family:Georgia,serif;font-size:clamp(2.6rem,7vw,5.9rem);line-height:.95;letter-spacing:-.045em}h2{font-family:Georgia,serif;font-size:clamp(2rem,4vw,3.6rem);line-height:1.05;margin:.4rem 0 1rem}.hero>p{max-width:760px;font-size:1.12rem;color:var(--muted)}.proof-form{margin-top:32px;padding:22px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow)}label{display:block;font-weight:800;margin-bottom:8px}.input-row{display:grid;grid-template-columns:1fr auto;gap:10px}input{min-width:0;padding:15px 16px;border:1px solid #89948e;background:#fff;font:inherit;font-size:1rem}button,.pilot-link{border:0;background:var(--green);color:white;padding:14px 19px;font:inherit;font-weight:800;cursor:pointer;text-decoration:none}button.secondary{background:transparent;border:1px solid var(--ink);color:var(--ink)}button:disabled{opacity:.55;cursor:wait}.form-note,.disclaimer{color:var(--muted);font-size:.88rem}.status{min-height:28px;margin-top:14px;font-weight:700}.status.error{color:var(--danger)}.result{padding:34px;background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}.result-head,.pilot{display:flex;align-items:end;justify-content:space-between;gap:24px}.actions{display:flex;gap:8px}.summary-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);margin:24px 0}.metric{padding:17px;border-right:1px solid var(--line)}.metric:last-child{border-right:0}.metric strong{display:block;font-size:1.06rem;overflow-wrap:anywhere}.metric span{font-size:.76rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted)}.compare{display:flex;justify-content:space-between;padding:14px;background:var(--green2);margin:18px 0}.shots{display:grid;grid-template-columns:1.25fr .75fr;gap:18px;align-items:start}.shots figure{margin:0;background:#e8ebe6;border:1px solid var(--line)}.shots figcaption{padding:10px 12px;font-weight:800}.shots img{display:block;width:100%;height:auto;max-height:720px;object-fit:contain;object-position:top;background:white}.shots .wide{grid-column:1/-1}.band{padding:82px 0}.section-head{max-width:760px}.steps{list-style:none;padding:0;margin:30px 0 0;border-top:1px solid var(--line)}.steps li{display:grid;grid-template-columns:180px 1fr;gap:20px;padding:18px 0;border-bottom:1px solid var(--line)}.steps span{color:var(--muted)}.pilot{border-block:1px solid var(--line)}.pilot>div{max-width:760px}footer{display:flex;justify-content:space-between;padding:28px 0 44px;border-top:1px solid var(--line);color:var(--muted)}@media(max-width:720px){.topbar nav{display:none}.hero{padding-top:56px}.input-row{grid-template-columns:1fr}.result{padding:20px}.result-head,.pilot{align-items:stretch;flex-direction:column}.actions{flex-wrap:wrap}.summary-grid{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--line)}.shots{grid-template-columns:1fr}.shots .wide{grid-column:auto}.steps li{grid-template-columns:1fr;gap:4px}footer{flex-direction:column;gap:8px}}