:root {
    --ecsk-accent: var(--site-accent, #0f766e);
    --ecsk-accent-dark: var(--site-accent-dark, #115e59);
    --ecsk-ink: #17202a;
    --ecsk-muted: #5d6975;
    --ecsk-line: #dce3e8;
    --ecsk-soft: #f5f8f9;
    --ecsk-white: #fff;
    --ecsk-radius: 18px;
    --ecsk-shadow: 0 18px 45px rgba(20, 42, 52, .10);
}

.ecsk-entry { color: var(--ecsk-ink); }
.ecsk-lead { font-size: clamp(1.08rem, 2vw, 1.28rem); line-height: 1.65; color: #334155; }
.ecsk-content-section { margin: 2.5rem 0; }
.ecsk-content-section h2 { margin-bottom: .8rem; }
.ecsk-content-section li + li { margin-top: .45rem; }
.ecsk-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--ecsk-line); border-radius: 12px; }
.ecsk-table-wrap table { width: 100%; min-width: 520px; margin: 0; border-collapse: collapse; }
.ecsk-table-wrap th, .ecsk-table-wrap td { padding: .85rem 1rem; border-bottom: 1px solid var(--ecsk-line); text-align: left; vertical-align: top; }
.ecsk-table-wrap th { background: var(--ecsk-soft); }

.ecsk-calculator { margin: 2rem 0 3rem; border: 1px solid var(--ecsk-line); border-radius: var(--ecsk-radius); background: var(--ecsk-white); box-shadow: var(--ecsk-shadow); overflow: hidden; }
.ecsk-calculator__header { padding: clamp(1.25rem, 4vw, 2.2rem); color: #fff; background: linear-gradient(135deg, var(--ecsk-accent-dark), var(--ecsk-accent)); }
.ecsk-calculator__header h2 { margin: .35rem 0 .55rem; color: #fff; font-size: clamp(1.45rem, 3vw, 2rem); }
.ecsk-calculator__header p { margin: 0; max-width: 68ch; color: rgba(255,255,255,.88); }
.ecsk-calculator__eyebrow { display: inline-flex; padding: .25rem .6rem; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; font-size: .78rem; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.ecsk-calculator__form { padding: clamp(1.25rem, 4vw, 2.2rem); }
.ecsk-calculator__fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.1rem; }
.ecsk-calc-field { display: grid; gap: .4rem; margin: 0; font-weight: 650; }
.ecsk-calc-field__label { font-size: .95rem; }
.ecsk-calc-field small { color: var(--ecsk-muted); font-weight: 400; line-height: 1.4; }
.ecsk-input-wrap { display: flex; align-items: stretch; min-width: 0; }
.ecsk-calc-field input, .ecsk-calc-field select { width: 100%; min-height: 48px; padding: .75rem .85rem; border: 1px solid #b8c3ca; border-radius: 10px; color: var(--ecsk-ink); background: #fff; font: inherit; }
.ecsk-input-wrap input { border-radius: 10px 0 0 10px; }
.ecsk-input-unit { display: flex; align-items: center; justify-content: center; min-width: 54px; padding: .65rem; border: 1px solid #b8c3ca; border-left: 0; border-radius: 0 10px 10px 0; background: var(--ecsk-soft); color: #40505c; font-weight: 650; }
.ecsk-calc-field input:focus, .ecsk-calc-field select:focus { outline: 3px solid color-mix(in srgb, var(--ecsk-accent) 24%, transparent); border-color: var(--ecsk-accent); }
.ecsk-calculator__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.4rem; }
.ecsk-button { min-height: 46px; padding: .72rem 1.25rem; border: 1px solid transparent; border-radius: 10px; font: inherit; font-weight: 750; cursor: pointer; }
.ecsk-button--primary { color: #fff; background: var(--ecsk-accent); }
.ecsk-button--primary:hover { background: var(--ecsk-accent-dark); }
.ecsk-button--secondary { color: var(--ecsk-ink); border-color: var(--ecsk-line); background: #fff; }
.ecsk-calculator__error { margin: 1rem 0 0; padding: .8rem 1rem; border-left: 4px solid #b91c1c; background: #fff1f2; color: #881337; }
.ecsk-calculator__result { margin: 0 clamp(1.25rem, 4vw, 2.2rem) 2rem; padding: 1.25rem; border: 1px solid color-mix(in srgb, var(--ecsk-accent) 30%, #fff); border-radius: 14px; background: color-mix(in srgb, var(--ecsk-accent) 7%, #fff); }
.ecsk-result__topline { margin-bottom: .8rem; color: var(--ecsk-accent-dark); font-size: .78rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.ecsk-result__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .75rem; }
.ecsk-result-card { padding: .9rem; border: 1px solid rgba(15, 118, 110, .16); border-radius: 10px; background: #fff; }
.ecsk-result-card__label { display: block; min-height: 2.6em; color: var(--ecsk-muted); font-size: .84rem; line-height: 1.3; }
.ecsk-result-card__value { display: block; margin-top: .35rem; color: var(--ecsk-ink); font-size: 1.18rem; overflow-wrap: anywhere; }
.ecsk-result__note { margin: 1rem 0 0; color: var(--ecsk-muted); font-size: .9rem; }
.ecsk-calculator__privacy { margin: 0; padding: 1rem 2rem; border-top: 1px solid var(--ecsk-line); color: var(--ecsk-muted); background: var(--ecsk-soft); font-size: .82rem; text-align: center; }

.ecsk-faq { border-top: 1px solid var(--ecsk-line); }
.ecsk-faq details { border-bottom: 1px solid var(--ecsk-line); }
.ecsk-faq summary { padding: 1rem .2rem; cursor: pointer; font-weight: 750; }
.ecsk-faq details > div { padding: 0 .2rem 1rem; color: #3f4c57; }
.ecsk-faq details > div p:last-child { margin-bottom: 0; }
.ecsk-source-list { padding-left: 1.2rem; font-size: .92rem; }
.ecsk-editorial-box { display: flex; gap: 1rem; margin: 3rem 0 1rem; padding: 1.2rem; border: 1px solid var(--ecsk-line); border-radius: 14px; background: var(--ecsk-soft); }
.ecsk-editorial-box__icon { display: grid; place-items: center; flex: 0 0 38px; height: 38px; border-radius: 50%; color: #fff; background: var(--ecsk-accent); font-weight: 800; }
.ecsk-editorial-box p { margin: .35rem 0 0; color: var(--ecsk-muted); font-size: .9rem; }
.ecsk-related { margin: 3rem 0; }
.ecsk-related__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.ecsk-related__card { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid var(--ecsk-line); border-radius: 12px; color: var(--ecsk-ink); text-decoration: none; background: #fff; transition: transform .15s ease, border-color .15s ease; }
.ecsk-related__card:hover { transform: translateY(-2px); border-color: var(--ecsk-accent); }
.ecsk-ad-slot { clear: both; min-height: 90px; margin: 2.5rem 0; padding: 1rem; border: 1px dashed #c5cdd3; border-radius: 10px; background: #fafbfc; }
.ecsk-ad-slot--after-result { margin-top: 3.25rem; }

@media (max-width: 720px) {
    .ecsk-calculator__fields, .ecsk-result__grid, .ecsk-related__grid { grid-template-columns: 1fr; }
    .ecsk-calculator__privacy { padding-inline: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    .ecsk-related__card { transition: none; }
    html:focus-within { scroll-behavior: auto; }
}