:root{--bg: #f5f7f6;--text: #111827;--muted: #5f6f7a;--red: #d71920;--red-dark: #ae1118;--gold: #f4b942;--green: #2f7d6b;--white: #ffffff;--line: #d8e0dd;--model: #17354a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}.landing{min-height:100vh;padding:28px}.header{width:min(1120px,100%);margin:0 auto 48px;display:flex;align-items:center;justify-content:space-between}.logo{font-size:24px;font-weight:800}.header-link{padding:10px 18px;border:1px solid var(--line);border-radius:8px;background:var(--white);font-weight:700}.hero{width:min(1120px,100%);min-height:62vh;margin:0 auto;display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}.label{width:fit-content;margin:0 0 18px;padding:8px 14px;border-radius:8px;background:#ffe7e8;color:var(--red-dark);font-weight:800}h1{max-width:760px;margin:0 0 20px;font-size:clamp(42px,7vw,76px);line-height:.96;letter-spacing:0}.subtitle{max-width:640px;margin:0;color:var(--muted);font-size:20px;line-height:1.55}.cta-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}.btn{min-height:56px;display:inline-flex;align-items:center;justify-content:center;padding:0 30px;border-radius:8px;background:var(--red);color:var(--white);font-size:17px;font-weight:800;box-shadow:0 16px 30px #d719203d}.btn:hover{background:var(--red-dark)}.hint{color:var(--muted);font-size:14px}.visual{overflow:hidden;border:1px solid var(--line);border-radius:8px;background:var(--white);box-shadow:0 24px 64px #11182724}.visual-top{display:flex;gap:8px;padding:14px;border-bottom:1px solid var(--line)}.visual-top span{width:10px;height:10px;border-radius:50%;background:#bac6c2}.model-space{position:relative;min-height:340px;overflow:hidden;background:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px),radial-gradient(circle at 76% 18%,rgba(244,185,66,.24),transparent 28%),var(--model);background-size:24px 24px,24px 24px,auto,auto}.axis,.part,.node{position:absolute;display:block}.axis{height:3px;border-radius:999px;transform-origin:left center}.axis-x{left:70px;top:230px;width:300px;background:#91f2ff;transform:rotate(-19deg)}.axis-y{left:108px;top:260px;width:230px;background:var(--gold);transform:rotate(-62deg)}.axis-z{left:112px;top:258px;width:220px;background:#9ff0ce;transform:rotate(31deg)}.part-main{left:138px;top:104px;width:190px;height:124px;border:3px solid #dffcff;border-radius:8px;background:#2f7d6b6b;transform:skewY(-15deg) rotate(-2deg)}.part-cut{left:214px;top:76px;width:126px;height:92px;border:3px solid #fdf6d4;border-radius:8px;background:#f4b9425c;transform:skewY(-15deg) rotate(-2deg)}.part-face{left:92px;top:164px;width:118px;height:86px;border:3px solid #ffc3c7;border-radius:8px;background:#d7192057;transform:skewY(-15deg) rotate(-2deg)}.node{width:14px;height:14px;border:3px solid var(--white);border-radius:50%;background:var(--red)}.node-1{left:105px;top:252px}.node-2{right:82px;top:178px}.node-3{left:220px;top:92px}.cards{width:min(1120px,100%);margin:36px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cards article{padding:22px;border:1px solid var(--line);border-radius:8px;background:var(--white)}.cards h2{margin:0 0 8px;font-size:22px}.cards p{margin:0;color:var(--muted);line-height:1.5}@media (max-width: 820px){.landing{padding:20px}.header{margin-bottom:32px}.hero,.cards{grid-template-columns:1fr}.visual{order:-1}.model-space{min-height:250px}.subtitle{font-size:18px}}