:root{--blue:#1769ff;--blue2:#eaf2ff;--ink:#102033;--muted:#6b7b90;--line:#dfe8f5;--bg:#f5f9ff;--white:#fff;--ok:#0f9f6e;--err:#d33f49}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:radial-gradient(circle at top left,#dcebff 0,#f7fbff 36%,#fff 100%);min-height:100vh}.wrap{width:min(920px,calc(100% - 32px));margin:0 auto;padding:42px 0}.hero{margin:10vh auto 0;text-align:center;background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:28px;padding:56px 28px;box-shadow:0 24px 80px rgba(23,105,255,.08)}.logo{width:62px;height:62px;margin:0 auto 18px;border-radius:22px;background:linear-gradient(135deg,var(--blue),#7eb5ff);color:white;display:grid;place-items:center;font-weight:800}.head{display:flex;justify-content:space-between;gap:24px;align-items:stretch;margin-bottom:24px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--blue);font-weight:800}h1{margin:8px 0 10px;font-size:34px;line-height:1.15}p{color:var(--muted);line-height:1.7}.stock{min-width:138px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.84);display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 16px 50px rgba(23,105,255,.08)}.stock span{font-size:34px;font-weight:800;color:var(--blue)}.stock small{color:var(--muted)}.panel{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:0 24px 80px rgba(23,105,255,.09)}.extract-form{display:grid;grid-template-columns:1fr 240px auto;gap:14px;align-items:end}label{display:block;color:#29415e;font-weight:700;font-size:14px}input,select,textarea{width:100%;margin-top:8px;border:1px solid var(--line);border-radius:16px;padding:14px 15px;font:inherit;background:#fff;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 4px var(--blue2)}.btn,.ghost{border:0;border-radius:16px;padding:14px 20px;font-weight:800;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-height:48px}.btn{background:var(--blue);color:#fff;box-shadow:0 12px 28px rgba(23,105,255,.25)}.ghost{background:var(--blue2);color:var(--blue);border:1px solid #d7e6ff}.tips{margin-top:18px;background:#f8fbff;border:1px solid var(--line);border-radius:18px;padding:16px;color:var(--muted);line-height:1.75}.notice{margin-bottom:18px;border-radius:16px;padding:14px 16px;font-weight:700}.notice.ok{background:#eafaf4;color:var(--ok);border:1px solid #bfecd8}.notice.err{background:#fff0f1;color:var(--err);border:1px solid #ffd1d5}.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}textarea#resultBox{height:320px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;line-height:1.6}footer{text-align:center;color:#8b9bb1;margin-top:28px;font-size:13px}@media(max-width:760px){.head{flex-direction:column}.stock{min-height:120px}.extract-form{grid-template-columns:1fr}h1{font-size:28px}}