*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Arial,sans-serif;color:#172033;background:#f5f8f8;line-height:1.65}a{color:inherit;text-decoration:none}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid #e5ecec}.nav-wrap{max-width:1180px;margin:auto;padding:12px 18px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;color:#123b3a}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#0f766e;color:#fff;font-size:13px;box-shadow:0 7px 20px #0f766e33}.site-header nav{display:none;gap:22px;font-size:14px;font-weight:600}.site-header nav a:hover{color:#0f766e}.menu-toggle{border:0;background:#eef7f6;border-radius:10px;font-size:22px;width:42px;height:42px}.site-header nav.open{position:absolute;top:62px;left:12px;right:12px;background:#fff;padding:14px;border:1px solid #e2eeee;border-radius:16px;box-shadow:0 20px 50px #102b2b18;display:flex;flex-direction:column}.hero{background:linear-gradient(135deg,#0b4f4b,#0f766e 55%,#14b8a6);color:white;overflow:hidden;position:relative}.hero:after{content:"";position:absolute;width:360px;height:360px;border:1px solid #ffffff30;border-radius:50%;right:-120px;top:-160px;animation:float 8s ease-in-out infinite}.hero-inner{max-width:1180px;margin:auto;padding:58px 18px 54px;position:relative;z-index:1}.eyebrow{display:inline-block;padding:7px 11px;border:1px solid #ffffff35;background:#ffffff12;border-radius:999px;font-size:12px;font-weight:700}.hero h1{font-size:clamp(34px,8vw,62px);line-height:1.04;margin:18px 0 14px;letter-spacing:-2px}.hero p{max-width:720px;font-size:17px;opacity:.95}.hero-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}.hero-pills span{padding:7px 10px;border-radius:999px;background:#ffffff16;border:1px solid #ffffff2d;font-size:12px}.tool-section{max-width:1180px;margin:-28px auto 0;padding:0 14px;position:relative;z-index:2}.calculator-grid{display:grid;gap:16px}.card{background:#fff;border:1px solid #e3ecec;border-radius:22px;box-shadow:0 16px 50px #163b3b0d}.input-card{padding:18px}.result-card{padding:20px;overflow:hidden}.card-head,.result-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.step{display:inline-grid;place-items:center;width:32px;height:24px;border-radius:8px;background:#e7f5f3;color:#0f766e;font-size:11px;font-weight:800}.card-head h2{font-size:21px;margin:8px 0 0}.link-btn,.share-mini{border:0;background:none;color:#0f766e;font-weight:700}.segmented{display:grid;grid-template-columns:1fr 1fr;background:#eef5f5;border-radius:12px;padding:4px;margin:20px 0}.unit-btn{border:0;padding:10px;border-radius:9px;background:transparent;font-weight:700;color:#536665}.unit-btn.active{background:#fff;color:#0f766e;box-shadow:0 3px 12px #163b3b10}.two-col{display:grid;grid-template-columns:1fr;gap:13px;margin-bottom:13px}label{display:block;font-size:13px;font-weight:700;color:#334544}input,select{width:100%;margin-top:6px;padding:12px 13px;border:1px solid #d5e2e2;border-radius:11px;background:#fbfdfd;font:inherit;font-size:15px;color:#172033;outline:none;transition:.2s}input:focus,select:focus{border-color:#0f9b90;box-shadow:0 0 0 4px #0f766e12}small{display:block;font-weight:400;color:#708180;font-size:11px;line-height:1.4;margin-top:4px}.measure-help{background:#f2f8f7;border-left:3px solid #0f766e;padding:9px 11px;border-radius:8px;font-size:12px;margin:6px 0 14px;color:#526564}.measurement-box{border:1px solid #e0eaea;background:#fcfefe;padding:13px;border-radius:15px}.measurement-box h3{font-size:14px;margin:0 0 12px}.measurement-guide{margin-top:12px;border-top:1px solid #e5eeee;padding-top:9px;font-size:12px}.measurement-guide summary{cursor:pointer;font-weight:700;color:#0f766e}.measurement-guide ul{padding-left:19px}.advanced{margin-top:14px;border-top:1px solid #e7eeee}.advanced-toggle{width:100%;border:0;background:none;padding:14px 2px;text-align:left;font-weight:800;color:#263c3b;display:flex;justify-content:space-between}.advanced-panel{display:none;padding-bottom:8px}.advanced-panel.open{display:grid;gap:12px;animation:slide .25s ease}.switch-row{display:flex;align-items:center;gap:8px;font-weight:600}.switch-row input{width:auto;margin:0}.primary-btn{width:100%;border:0;background:#0f766e;color:#fff;padding:14px;border-radius:12px;font-weight:800;font-size:15px;margin-top:8px;cursor:pointer;box-shadow:0 10px 24px #0f766e24;transition:.2s}.primary-btn:hover{transform:translateY(-2px);background:#0b625d}.error{color:#b42318;font-size:12px;min-height:18px;margin-top:7px}.result-label{margin-right:auto;font-size:13px;font-weight:800;color:#667776}.bodyfat-orb{display:grid;place-items:center;padding:25px 0 13px}.orb-ring{width:190px;height:190px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(#0f766e 0deg,#14b8a6 180deg,#e6eeee 180deg);padding:10px;transform:scale(.9);transition:background 1s ease,transform .7s ease;box-shadow:0 15px 45px #0f766e18}.orb-ring.pop{animation:pop .65s ease}.orb-core{width:100%;height:100%;border-radius:50%;background:#fff;display:grid;place-content:center;text-align:center;box-shadow:inset 0 0 25px #0f766e0a}.orb-core strong{font-size:40px;line-height:1;color:#0f766e}.orb-core span{font-size:12px;color:#718180;margin-top:7px}.category{text-align:center;font-weight:800;font-size:15px}.scale{height:9px;background:#e8eeee;border-radius:99px;overflow:hidden;margin-top:18px}.scale-fill{height:100%;width:0;border-radius:99px;background:#0f766e;transition:width 1s ease}.scale-labels{display:flex;justify-content:space-between;font-size:9px;color:#849291;margin-top:5px}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:18px}.metrics div{background:#f6fafa;border:1px solid #e4eded;padding:11px;border-radius:12px}.metrics span{display:block;color:#73817f;font-size:10px}.metrics strong{font-size:16px}.comparison{margin-top:12px}.comparison .compare-line{display:flex;justify-content:space-between;font-size:12px;padding:6px 0}.target-card{background:#edf8f6;border:1px solid #d3eeea;border-radius:13px;padding:12px;margin-top:12px}.target-card strong{font-size:13px}.target-card p{margin:3px 0 0;font-size:12px}.result-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:13px}.result-actions button{border:1px solid #d8e4e4;background:#fff;border-radius:10px;padding:10px;font-weight:700;font-size:12px}.result-note{font-size:10px;color:#7b8887;margin:12px 0 0}.info-section,.article-section,.table-section,.faq-section,.disclaimer-section{max-width:1000px;margin:70px auto;padding:0 18px}.section-heading{text-align:center;margin-bottom:28px}.section-heading>span{font-size:11px;font-weight:800;color:#0f766e;text-transform:uppercase;letter-spacing:1.2px}.section-heading h2{font-size:clamp(25px,5vw,38px);line-height:1.15;margin:8px 0}.section-heading p{max-width:700px;margin:auto;color:#61716f}.section-heading.left{text-align:left}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.feature{background:#fff;border:1px solid #e1ebeb;border-radius:17px;padding:18px;transition:.25s}.feature:hover{transform:translateY(-4px);box-shadow:0 15px 30px #183d3d0c}.feature .icon{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:#e8f6f4;color:#0f766e;font-weight:800}.feature h3{font-size:16px;margin:12px 0 5px}.feature p{font-size:12px;color:#667574;margin:0}.prose{background:#fff;border:1px solid #e2ebeb;border-radius:22px;padding:22px;box-shadow:0 14px 40px #173b3b08}.prose h3{font-size:20px;margin:30px 0 8px;color:#163c3b}.prose p{font-size:14px;color:#4f6060}.formula-card{display:grid;grid-template-columns:1fr;gap:5px;background:#f4f9f8;border-left:4px solid #0f766e;padding:13px;margin:15px 0;border-radius:8px}.formula-card strong{font-size:12px}.formula-card code{font-family:ui-monospace,monospace;font-size:12px;overflow-wrap:anywhere}.source-note{margin-top:25px;padding:13px;background:#fff8e6;border:1px solid #f0dfae;border-radius:10px;font-size:12px;color:#66552a}.table-wrap{overflow:auto;background:#fff;border:1px solid #e1ebeb;border-radius:17px}.table-wrap table{border-collapse:collapse;width:100%;min-width:540px}.table-wrap th,.table-wrap td{padding:13px;text-align:left;border-bottom:1px solid #e5eeee;font-size:13px}.table-wrap th{background:#f1f7f6;color:#23413f}.faq-list{display:grid;gap:9px}.faq-list details{background:#fff;border:1px solid #e0eaea;border-radius:13px;padding:13px 15px}.faq-list summary{cursor:pointer;font-weight:800;font-size:13px}.faq-list p{font-size:12px;color:#61706f}.disclaimer{background:#fff7e8;border:1px solid #f0dfb4;border-radius:16px;padding:18px}.disclaimer strong{color:#7a5a11}.disclaimer p{font-size:12px;color:#655b43;margin-bottom:0}footer{background:#102f2e;color:#dbe9e7;margin-top:70px}.footer-inner{max-width:1180px;margin:auto;padding:28px 18px;display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap}.footer-inner .brand{color:#fff}.footer-inner p,.footer-inner span:last-child{font-size:11px;color:#a8bfbd}.toast{position:fixed;left:50%;bottom:25px;transform:translate(-50%,20px);background:#163b3a;color:#fff;padding:10px 15px;border-radius:999px;font-size:12px;opacity:0;pointer-events:none;transition:.25s;z-index:100}.toast.show{opacity:1;transform:translate(-50%,0)}@keyframes pop{0%{transform:scale(.88)}60%{transform:scale(1.04)}100%{transform:scale(1)}}@keyframes float{50%{transform:translate(-15px,18px)}}@keyframes slide{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}@media(min-width:680px){.two-col{grid-template-columns:1fr 1fr}.calculator-grid{grid-template-columns:1fr 1fr}.input-card{padding:24px}.result-card{padding:24px}.feature-grid{grid-template-columns:repeat(4,1fr)}.prose{padding:34px}.hero-inner{padding:75px 24px}.result-actions{grid-template-columns:repeat(4,1fr)}}@media(min-width:900px){.site-header nav{display:flex}.menu-toggle{display:none}.hero-inner{padding-left:0;padding-right:0}.tool-section{padding:0;margin-top:-35px}.calculator-grid{grid-template-columns:1.02fr .98fr}.result-card{position:sticky;top:80px;align-self:start}.info-section,.article-section,.table-section,.faq-section,.disclaimer-section{padding:0}.prose p{font-size:15px}.prose h3{font-size:21px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{.site-header,.hero,.input-card,.result-actions,.info-section,.article-section,.table-section,.faq-section,.disclaimer-section,footer{display:none!important}.tool-section{margin:0}.result-card{box-shadow:none;border:0}.result-card:before{content:"DigiSadhan Body Fat Calculator";display:block;font-weight:800;font-size:20px;margin-bottom:15px}}
