/* This page keeps the shared header but gives it a local, high-contrast surface.
   The global header is transparent and uses white navigation text. */
body.isg-service-duration-page-body header {
    min-height: 100px;
    background: #102d4f;
    box-shadow: 0 2px 12px rgba(16, 45, 79, .20);
}

body.isg-service-duration-page-body header .inner .middle .site-menu > li > a,
body.isg-service-duration-page-body header .inner .end .mobile,
body.isg-service-duration-page-body header .inner .end .mobile .icon {
    color: #fff;
}

.isg-duration-page {
    --isg-navy: #102d4f;
    --isg-blue: #1475b8;
    --isg-pale: #eef7fb;
    --isg-ink: #183044;
    --isg-muted: #5f7080;
    --isg-line: #dbe5ec;
    --isg-warn: #fff8df;
    color: var(--isg-ink);
    background: #f5f8fa;
    line-height: 1.55;
}

.isg-duration-wrap { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.isg-duration-skip-link { position: fixed; left: 12px; top: -48px; z-index: 1100; padding: 10px 14px; color: #fff; background: #102d4f; border-radius: 0 0 8px 8px; }
.isg-duration-skip-link:focus { top: 0; color: #fff; }

.isg-duration-intro { padding:64px 0 38px; background: linear-gradient(135deg, #eef8fc, #fff); }
.isg-duration-eyebrow { margin: 0 0 8px; color: var(--isg-blue); font-size: 13px; font-weight: 800; letter-spacing: .08em; }
.isg-duration-intro h1 { max-width: 780px; margin: 0; color: var(--isg-navy); font-size: clamp(32px, 5vw, 52px); line-height: 1.08; }
.isg-duration-intro > .isg-duration-wrap > p:last-child { max-width: 760px; margin: 18px 0 0; color: var(--isg-muted); font-size: 18px; }
.isg-duration-main { padding: 38px 0 64px; }
.isg-duration-calculator { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(420px, 1.2fr); gap: 24px; align-items: start; }
.isg-duration-panel, .isg-duration-faq { border: 1px solid var(--isg-line); border-radius: 18px; background: #fff; box-shadow: 0 12px 35px rgba(16, 45, 79, .08); }
.isg-duration-form-panel, .isg-duration-result-panel, .isg-duration-info { padding: 28px; }
.isg-duration-form-panel { position: sticky; top: 20px; }
.isg-duration-panel h2, .isg-duration-faq h2 { margin: 0 0 8px; color: var(--isg-navy); font-size: 24px; }
.isg-duration-lead { margin: 0 0 24px; color: var(--isg-muted); }
.isg-duration-form-panel label { display: block; margin: 18px 0 7px; font-weight: 700; }
.isg-duration-form-panel select, .isg-duration-form-panel input { width: 100%; min-height: 50px; padding: 10px 12px; color: var(--isg-ink); font: inherit; background: #fff; border: 1px solid #b9c8d3; border-radius: 10px; }
.isg-duration-form-panel select:focus, .isg-duration-form-panel input:focus, .isg-duration-form-panel button:focus, .isg-duration-cta a:focus, .isg-duration-faq summary:focus { outline: 3px solid rgba(20, 117, 184, .28); outline-offset: 2px; border-color: var(--isg-blue); }
.isg-duration-form-panel button { width: 100%; min-height: 52px; margin-top: 24px; color: #fff; font: 700 16px Arial, Helvetica, sans-serif; cursor: pointer; background: var(--isg-blue); border: 0; border-radius: 10px; }
.isg-duration-form-panel button:hover { background: #0e6099; }
.isg-duration-error { min-height: 24px; margin: 8px 0 0; color: #a52b2b; font-weight: 700; }
.isg-duration-summary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 20px 0; }
.isg-duration-summary-card { padding: 16px; background: var(--isg-pale); border-radius: 12px; }
.isg-duration-summary-card small { display: block; color: var(--isg-muted); }
.isg-duration-summary-card strong { display: block; margin-top: 3px; color: var(--isg-navy); font-size: 20px; }
.isg-duration-table-wrap { overflow-x: auto; border: 1px solid var(--isg-line); border-radius: 12px; }
.isg-duration-table-wrap table { width: 100%; min-width: 620px; border-collapse: collapse; }
.isg-duration-table-wrap th, .isg-duration-table-wrap td { padding: 14px 13px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--isg-line); }
.isg-duration-table-wrap th { color: #fff; font-size: 14px; background: var(--isg-navy); }
.isg-duration-table-wrap tbody tr:last-child td { border-bottom: 0; }
.isg-duration-badge { display: inline-block; padding: 4px 9px; color: #146649; font-size: 13px; font-weight: 800; background: #dff3eb; border-radius: 999px; }
.isg-duration-note { margin-top: 18px; padding: 16px; color: #5c4b1d; background: var(--isg-warn); border-left: 4px solid #e6b93f; border-radius: 8px; }
.isg-duration-info { margin-top: 28px; }
.isg-duration-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.isg-duration-info-grid article { padding: 18px; border: 1px solid var(--isg-line); border-radius: 12px; }
.isg-duration-info-grid h3 { margin: 0 0 8px; color: var(--isg-navy); font-size: 18px; }
.isg-duration-info-grid p { margin: 0; color: var(--isg-muted); }
.isg-duration-source { margin: 26px 0 0; padding-top: 22px; border-top: 1px solid var(--isg-line); }
.isg-duration-source a { color: var(--isg-blue); font-weight: 700; }
.isg-duration-faq { margin-top: 28px; padding: 28px; }
.isg-duration-faq details { padding: 15px 0; border-top: 1px solid var(--isg-line); }
.isg-duration-faq details:first-of-type { border-top: 0; }
.isg-duration-faq summary { color: var(--isg-navy); font-weight: 700; cursor: pointer; }
.isg-duration-faq p { margin: 10px 0 0; color: var(--isg-muted); }
.isg-duration-cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 24px; padding: 25px; color: #fff; background: var(--isg-navy); border-radius: 16px; }
.isg-duration-cta h2 { margin: 0 0 5px; color: #fff; font-size: 24px; }
.isg-duration-cta p { margin: 0; color: #d9e7f2; }
.isg-duration-cta a { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 18px; color: var(--isg-navy); font-weight: 800; white-space: nowrap; text-decoration: none; background: #fff; border-radius: 9px; }

@media (max-width: 991px) {
    body.isg-service-duration-page-body header { min-height: 80px; }
    .isg-duration-intro { padding-top:48px; }
}

@media (max-width: 800px) {
    .isg-duration-intro { padding:64px 0 28px; }
    .isg-duration-calculator, .isg-duration-summary, .isg-duration-info-grid { grid-template-columns: 1fr; }
    .isg-duration-form-panel { position: static; }
    .isg-duration-cta { align-items: flex-start; flex-direction: column; }
    .isg-duration-cta a { width: 100%; }
}

@media (max-width: 480px) {
    .isg-duration-wrap { width: min(1120px, calc(100% - 22px)); }
    .isg-duration-form-panel, .isg-duration-result-panel, .isg-duration-info, .isg-duration-faq { padding: 20px; }
    .isg-duration-intro > .isg-duration-wrap > p:last-child { font-size: 16px; }
}