.tool-bmi{padding:2.4rem 0 1.4rem}.tool-bmi__shell{max-width:920px;margin:0 auto}.tool-bmi__hero{text-align:center;padding:0 1rem;margin-bottom:1.6rem}.tool-bmi__form{display:grid;gap:1.05rem}.tool-bmi__tabs{position:relative;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-self:center;width:min(100%,20rem);margin:0 auto .4rem;padding:.2rem;border-radius:999px;background:var(--tool-bg);border:1px solid var(--tool-line-strong)}.tool-bmi__tab{position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;min-width:0;padding:.48rem .9rem;border:none;background:0 0;color:var(--tool-fg-muted);font-size:.84rem;font-weight:600;letter-spacing:.04em;border-radius:999px;cursor:pointer;transition:color .2s;text-align:center;white-space:nowrap}.tool-bmi__tab[aria-selected=true]{color:#fff}.tool-bmi__tab-thumb{position:absolute;top:.2rem;bottom:.2rem;left:.2rem;width:calc(50% - .2rem);border-radius:999px;background:var(--tool-accent);box-shadow:0 8px 18px rgba(0,0,0,.18);transition:transform .32s cubic-bezier(.22, .7, .18, 1);pointer-events:none}.tool-bmi__tabs[data-mode=imperial] .tool-bmi__tab-thumb{transform:translateX(100%)}.tool-bmi__inputs{display:grid;grid-template-columns:1fr 1fr;gap:.85rem}.tool-bmi__inputs--imperial-height{grid-template-columns:1fr 1fr;gap:.5rem}.tool-bmi__height-row{display:grid;gap:.45rem}.tool-bmi__height-row[hidden]{display:none}.tool-bmi__submit-btn{justify-self:center}.tool-bmi__band{position:relative;margin-top:.4rem;padding:1.2rem 1.2rem 1.4rem;border-radius:var(--tool-radius-md);background:var(--tool-bg);border:1px solid var(--tool-line)}.tool-bmi__band-head{display:flex;align-items:baseline;justify-content:space-between;gap:.8rem;margin-bottom:.85rem}.tool-bmi__band-title{margin:0;color:var(--tool-fg);font-size:.92rem;font-weight:600;letter-spacing:.03em}.tool-bmi__band-category{color:var(--tool-accent);font-size:.92rem;font-weight:700}.tool-bmi__bar{position:relative;display:flex;height:14px;border-radius:999px;overflow:visible}.tool-bmi__segment{flex:1;height:100%;border-right:1px solid rgba(255,255,255,.7)}.tool-bmi__segment:first-child{border-radius:999px 0 0 999px}.tool-bmi__segment:last-child{border-radius:0 999px 999px 0;border-right:none}.tool-bmi__segment[data-cat=under]{background:#6db1ff}.tool-bmi__segment[data-cat=normal]{background:#4cb87a}.tool-bmi__segment[data-cat=over]{background:#f0c24a}.tool-bmi__segment[data-cat=ob1]{background:#e89358}.tool-bmi__segment[data-cat=ob2]{background:#d96c4c}.tool-bmi__segment[data-cat=ob3]{background:#b94640}.tool-bmi__bar-marker{position:absolute;top:50%;left:0;width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid var(--tool-fg);transform:translate(-50%,-50%);box-shadow:0 8px 18px rgba(0,0,0,.22);transition:left 1.2s cubic-bezier(.22, .7, .18, 1)}.tool-bmi__legend{display:grid;grid-template-columns:repeat(6,1fr);gap:.4rem;margin-top:.85rem;color:var(--tool-fg-soft);font-size:.66rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;text-align:center}.tool-bmi__recommendation{margin-top:1.2rem;padding:1rem 1.1rem;border-radius:var(--tool-radius-md);background:#fff;border:1px solid var(--tool-line-strong);color:var(--tool-fg-muted);font-size:.92rem;line-height:1.65}.tool-bmi__recommendation strong{color:var(--tool-fg)}.tool-bmi__cta-row{justify-content:center}.tool-bmi__cta-row .btn{flex:0 0 auto;justify-content:center}@media (max-width:575px){.tool-bmi__tabs{width:100%}.tool-bmi__tab{padding:.46rem .72rem;font-size:.8rem}.tool-bmi__legend{grid-template-columns:repeat(3,1fr);gap:.5rem .4rem}}