.form-shell{
    max-width:1120px;
    margin:auto;
    background:#fff;
    border:1px solid var(--line);
    border-radius:30px;
    box-shadow:var(--shadow);
    overflow:hidden;
}

.form-shell.simple{
    max-width:760px;
}

.stepbar{
    display:grid;
    grid-template-columns:1fr 1fr;
    background:#f6f9fd;
    border-bottom:1px solid var(--line);
}

.step-tab{
    min-height:74px;
    display:flex;
    align-items:center;
    gap:12px;
    padding:16px 20px;
    border-right:1px solid var(--line);
}

.step-tab:last-child{border-right:0}

.step-no{
    width:34px;
    height:34px;
    display:grid;
    place-items:center;
    border-radius:50%;
    background:var(--navy);
    color:#fff;
    font-size:12px;
    font-weight:900;
    flex:0 0 auto;
}

.step-tab.inactive .step-no{
    background:#d7e1ed;
    color:#5d6c7c;
}

.step-tab strong{
    display:block;
    color:var(--navy);
    font-size:14px;
}

.step-tab span{
    display:block;
    color:var(--muted);
    font-size:12px;
    margin-top:3px;
}

.form-body{
    padding:30px;
}

.line-title,
.section-divider{
    display:grid;
    grid-template-columns:1fr auto 1fr;
    gap:18px;
    align-items:center;
    margin:6px 0 28px;
}

.section-divider{
    margin:34px 0 20px;
}

.line-title:before,
.line-title:after,
.section-divider:before,
.section-divider:after{
    content:"";
    height:1px;
    background:var(--line);
}

.line-title span,
.section-divider span{
    color:var(--blue);
    font-size:13px;
    font-weight:900;
    letter-spacing:.10em;
    text-transform:uppercase;
    white-space:nowrap;
}

.form-grid{
    display:grid;
    grid-template-columns:170px 1fr 1fr;
    gap:9px 14px;
    align-items:start;
}

.field-label{
    padding-top:9px;
    color:#40546c;
    font-size:13px;
    line-height:1.35;
}

.field-line{
    display:grid;
    gap:8px;
}

.field-line.wide{
    grid-column:span 2;
}

.inline-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
}

.inline-grid.four{
    grid-template-columns:repeat(4,1fr);
}

input,
select,
textarea{
    width:100%;
    min-height:38px;
    padding:8px 11px;
    border:1px solid #d9e4ef;
    border-radius:8px;
    background:#fff;
    color:#2f4054;
    font:inherit;
    font-size:13px;
    outline:none;
    transition:.15s ease;
}

textarea{
    resize:vertical;
}

input:focus,
select:focus,
textarea:focus{
    border-color:var(--blue);
    box-shadow:0 0 0 4px rgba(15,110,219,.08);
}

.parent-grid,
.source-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:12px 24px;
}

.stack{
    display:grid;
    gap:8px;
}

.sibling-grid{
    display:grid;
    grid-template-columns:1.3fr .55fr 1.4fr;
    gap:8px 12px;
}

.help{
    color:var(--muted);
    font-size:12px;
    line-height:1.45;
}

.submit-area{
    margin-top:28px;
    padding:18px;
    border-radius:20px;
    border:1px solid var(--line);
    background:#f8fbff;
    display:flex;
    justify-content:flex-end;
    gap:10px;
    flex-wrap:wrap;
}

.notice{
    padding:15px 16px;
    border-radius:18px;
    background:#eff6ff;
    border:1px solid #bfdbfe;
    color:#1e3a8a;
    margin-bottom:18px;
    font-size:13px;
    line-height:1.55;
}

.notice strong,
.notice span{
    display:block;
}

.search-box{
    display:grid;
    gap:8px;
}

.search-box label{
    font-size:13px;
    font-weight:850;
    color:var(--navy);
}

.internal-results{
    display:grid;
    gap:10px;
    margin-top:16px;
}

.internal-result-card{
    display:flex;
    justify-content:space-between;
    gap:14px;
    align-items:center;
    padding:14px;
    border:1px solid var(--line);
    border-radius:18px;
    background:#fbfdff;
}

.internal-result-card strong{
    display:block;
    color:var(--navy);
    font-size:14px;
}

.internal-result-card span{
    display:block;
    color:var(--muted);
    font-size:12px;
    margin-top:3px;
}

@media(max-width:900px){
    .form-grid{
        grid-template-columns:1fr;
    }

    .field-label{
        padding-top:0;
        font-weight:800;
    }

    .field-line.wide{
        grid-column:auto;
    }
}

@media(max-width:640px){
    .form-body{padding:18px}

    .stepbar,
    .inline-grid,
    .inline-grid.four,
    .parent-grid,
    .source-grid,
    .sibling-grid{
        display:grid;
        grid-template-columns:1fr;
    }

    .step-tab{
        border-right:0;
        border-bottom:1px solid var(--line);
    }

    .step-tab:last-child{
        border-bottom:0;
    }

    .internal-result-card{
        display:grid;
    }
}