/* V12.6 unified tool layout */
.sch-tool-page{min-height:100vh}
.sch-tool-shell{max-width:1180px;margin:0 auto;padding:56px 24px}
.sch-tool-hero{border-radius:30px;padding:42px;margin-bottom:28px}
.sch-tool-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:24px}
.sch-card,.sch-tool-hero,.v123-guide{border:1px solid rgba(148,163,184,.28);border-radius:24px;padding:26px;background:rgba(15,23,42,.72)}
.sch-tool-ui textarea,.sch-card textarea,.sch-card input,.sch-card select{width:100%;box-sizing:border-box;border-radius:14px;border:1px solid rgba(148,163,184,.28);padding:13px;margin:8px 0 14px;background:rgba(2,6,23,.72);color:#f8fafc}
.sch-btn{display:inline-block;border:0;border-radius:14px;padding:12px 17px;background:#3b82f6;color:white;text-decoration:none;font-weight:800;cursor:pointer;margin:6px 8px 6px 0}.sch-btn.secondary{background:rgba(148,163,184,.22)}
.sch-output{white-space:pre-wrap;margin-top:16px;min-height:48px;border-radius:14px;padding:14px;background:rgba(2,6,23,.68);color:#dbeafe;border:1px solid rgba(148,163,184,.24)}
.sch-related{display:flex;gap:8px;flex-wrap:wrap}.sch-related a{border:1px solid rgba(148,163,184,.28);border-radius:999px;padding:7px 10px;text-decoration:none;color:#dbeafe}
html.light .sch-card,html.light .sch-tool-hero,html.light .v123-guide{background:rgba(255,255,255,.94)!important;color:#0f172a!important}
html.light .sch-output{background:#fff!important;color:#0f172a!important}
html.light .sch-related a{color:#0f172a}
@media(max-width:900px){.sch-tool-shell{padding:28px 14px}.sch-tool-layout{grid-template-columns:1fr}.sch-tool-hero{padding:26px}}