:root{--bg:#f3f6fb;--card:#ffffff;--line:#d8e0ec;--ink:#1f2937;--muted:#5b6b7f;--accent:#2563eb;--accent-dark:#1d4ed8;--soft:#eaf1ff;--danger:#dc2626;--ok:#16a34a}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;min-height:100vh;
background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200' fill='none' stroke='%232563eb' stroke-opacity='.09' stroke-width='1.5'%3E%3Cpath d='M0 40h60l20 20h50M80 60v60l20 20h100M140 0v50l20 20h40M30 200v-50l20-20h40M0 170h20'/%3E%3Cg fill='%232563eb' fill-opacity='.16'%3E%3Ccircle cx='60' cy='40' r='3'/%3E%3Ccircle cx='130' cy='60' r='3'/%3E%3Ccircle cx='100' cy='140' r='3'/%3E%3Ccircle cx='160' cy='70' r='3'/%3E%3Ccircle cx='90' cy='130' r='3'/%3E%3Ccircle cx='20' cy='170' r='3'/%3E%3C/g%3E%3C/svg%3E"),var(--bg);
background-attachment:fixed}
.top{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,.25)}
.top h1{margin:0;font-size:1.25rem;color:#fff}
.top nav{display:flex;gap:1rem}.top a{color:#dbe7ff;text-decoration:none}.top a:hover{color:#fff;text-decoration:underline}
main{max-width:1100px;margin:0 auto;padding:1.25rem}
h2,h3{margin-top:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.25rem;margin-bottom:1rem;box-shadow:0 2px 10px rgba(31,41,55,.06)}
.narrow{max-width:430px;margin:2rem auto}
label{display:block;margin-bottom:1rem;font-weight:600}
input:not([type=radio]):not([type=file]),textarea{display:block;width:100%;margin-top:.4rem;padding:.75rem;font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:8px}
input:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
input[type=file]{display:block;margin-top:.4rem;max-width:100%;color:var(--muted)}
.btn{display:inline-block;text-decoration:none;text-align:center;background:var(--accent);color:#fff;border:0;border-radius:8px;padding:.8rem 1.4rem;font:inherit;font-weight:600;cursor:pointer;min-height:44px}
.btn:hover{background:var(--accent-dark)}
.btn.danger{background:var(--danger)}.btn.danger:hover{background:#b91c1c}
.btn.excel{background:var(--ok)}.btn.excel:hover{background:#15803d}
.error,.okmsg{padding:.75rem 1rem;border-radius:8px;margin:0 0 1rem;border:1px solid}
.error{background:#fef2f2;color:#b91c1c;border-color:#fecaca}
.okmsg{background:#f0fdf4;color:#15803d;border-color:#bbf7d0}
.lead{font-size:1.05rem;color:var(--muted)}.lead strong{color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.1rem}
.design{position:relative;display:block;background:var(--card);border:2px solid var(--line);border-radius:12px;overflow:hidden;margin:0;font-weight:400;cursor:pointer;box-shadow:0 2px 10px rgba(31,41,55,.06);transition:border-color .2s}
.design input{position:absolute;opacity:0}
.gallery{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;background:#eef2f7}
.gallery img{flex:0 0 100%;width:100%;height:240px;object-fit:contain;scroll-snap-align:center;cursor:zoom-in}
.info{padding:1rem}.info h3{margin:0 0 .25rem}.info p{margin:0 0 .85rem;color:var(--muted)}
.pick{display:block;text-align:center;padding:.6rem;border:1px solid var(--accent);border-radius:8px;color:var(--accent);font-weight:600}
.design:has(input:checked){border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.2)}
.design:has(input:checked) .pick{background:var(--accent);color:#fff}
.design:has(input:checked) .pick::before{content:"✓ "}
.design:has(input:focus-visible){outline:3px solid var(--ink)}
.sticky{position:sticky;bottom:0;padding:.75rem 0;margin-top:1rem;background:linear-gradient(rgba(243,246,251,0),var(--bg) 40%);text-align:center}
.sticky .btn{width:100%;max-width:420px}
.thumbs{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem}.thumbs img{width:96px;height:96px;object-fit:cover;border-radius:8px;border:1px solid var(--line);cursor:zoom-in}
.bar{background:#e5ebf4;border-radius:8px;height:14px;overflow:hidden}.bar span{display:block;height:100%;background:var(--accent)}
.mats{display:flex;flex-wrap:wrap;gap:.4rem}.mats span{background:var(--soft);border:1px solid #cfdcf7;border-radius:6px;padding:.15rem .55rem;font-size:.9rem;color:var(--accent-dark)}
summary{cursor:pointer;font-weight:600;color:var(--accent)}
.toolbar{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;margin-bottom:1rem}
.lightbox,.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:1rem}
.lightbox{background:rgba(17,24,39,.85);z-index:60}.lightbox img{max-width:100%;max-height:100%}
.modal{background:rgba(17,24,39,.55);z-index:70}
.modal-box{max-width:480px;width:100%;max-height:92vh;overflow:auto;background:#fff;border-top:5px solid var(--accent);border-radius:14px;padding:1.5rem;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.modal-box ol{padding-left:1.2rem;margin:0 0 1.2rem;color:var(--muted)}.modal-box li{margin-bottom:.6rem}.modal-box li strong{color:var(--ink)}
.modal-box .btn{width:100%}
[hidden]{display:none!important}
@media(max-width:480px){main{padding:.75rem}.grid{grid-template-columns:1fr}.gallery img{height:220px}}