:root{--sky:#2563eb;--sky2:#7dd3fc;--ink:#0f172a;--mut:#64748b;--bg:#f4f9ff;--card:#ffffff;--line:#dbeafe;--ok:#16a34a;--warn:#dc2626;--radius:14px}
*,::before,::after{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:linear-gradient(180deg,#e0f2fe,#f4f9ff 340px);color:var(--ink);line-height:1.5}
img{max-width:100%;height:auto}
a{color:var(--sky);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
.site-head{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{font-size:20px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.logo span{font-size:22px}
nav{display:flex;gap:16px}
nav a{font-weight:500;color:var(--ink)}
nav a:hover{color:var(--sky)}
.hero{text-align:center;padding:28px 0 8px}
.hero h1{font-size:34px;line-height:1.2;margin:0 0 10px;color:var(--ink)}
.hero .sub{color:var(--mut);font-size:18px;margin:0 auto;max-width:620px}
.drop{border:2px dashed #93c5fd;background:#fff;border-radius:var(--radius);padding:28px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--sky);background:#eff6ff}
.drop input{display:none}
.drop-icon{font-size:40px;display:block;margin-bottom:8px}
.btn{background:var(--sky);color:#fff;border:0;border-radius:10px;padding:12px 22px;font-size:16px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:opacity .15s,background .15s}
.btn:hover{text-decoration:none;opacity:.92}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:#fff;color:var(--sky);border:1px solid var(--sky)}
.btn.ghost:hover{background:#f0f7ff}
.status{text-align:center;color:var(--mut);min-height:24px;margin:12px 0}
.status.loading::before{content:"";display:inline-block;width:14px;height:14px;margin-right:8px;vertical-align:-2px;border:2px solid var(--line);border-top-color:var(--sky);border-radius:50%;animation:cs-spin .8s linear infinite}
@keyframes cs-spin{to{transform:rotate(360deg)}}
.report{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin:18px 0;box-shadow:0 4px 12px rgba(37,99,235,.04)}
.report h2{margin:4px 0 12px;font-size:24px}
.conf{display:inline-block;background:#dcfce7;color:#166534;border-radius:999px;padding:2px 10px;font-size:13px;font-weight:600}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin-top:14px}
.fact{background:#f8fafc;border-radius:10px;padding:10px}
.fact b{display:block;color:var(--mut);font-size:12px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:2px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0}
.chip{background:#eff6ff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;text-decoration:none}
.others-title{color:var(--mut);font-size:13px;margin-top:10px}
.btn-link{align-self:center}
.safety{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:10px;padding:10px 12px;margin:12px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:18px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(37,99,235,.08);text-decoration:none}
.card img{width:100%;height:150px;object-fit:cover;display:block}
.card .pad{padding:12px}
.card h3{margin:0 0 4px;font-size:16px}
.card p{margin:0;color:var(--mut);font-size:14px}
.qfacts{width:100%;border-collapse:collapse;margin:10px 0}
.qfacts td{border-bottom:1px solid var(--line);padding:8px}
.qfacts td:first-child{color:var(--mut);width:150px}
details{border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 14px;margin:8px 0}
summary{cursor:pointer;font-weight:600;user-select:none}
summary::-webkit-details-marker{display:none}
summary::marker{content:""}
details[open] summary{margin-bottom:8px}
.gal{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin:14px 0}
.gal img{border-radius:10px;width:100%;height:120px;object-fit:cover;display:block}
.opts{display:grid;gap:10px;margin:14px 0}
.opt{padding:12px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;text-align:left;font-size:16px;color:var(--ink);transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--sky);background:#f8fafc}
.opt.right{border-color:var(--ok);background:#f0fdf4;color:#166534}
.opt.wrong{border-color:var(--warn);background:#fef2f2;color:#991b1b}
.site-foot{color:var(--mut);font-size:14px;padding:28px 0;text-align:center;border-top:1px solid var(--line);margin-top:36px}
@media (max-width:640px){
.hero h1{font-size:26px}
.card img{height:130px}
.site-head{flex-direction:column;gap:10px}
.facts{grid-template-columns:1fr}
.qfacts td:first-child{width:110px}
}