*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --g:#3DBE29;--g2:#4ed934;--g-dim:rgba(61,190,41,0.10);--g-glow:rgba(61,190,41,0.30);
  --bg:#ffffff;--bg2:#f7fdf5;--bg3:#f0fbed;
  --border:rgba(0,0,0,0.07);--border-g:rgba(61,190,41,0.22);
  --text:#0d1a0b;--muted:#6b7280;--muted2:#9ca3af;
  --nav-h:68px;--r:16px;
  --shadow:0 2px 20px rgba(0,0,0,0.06);--shadow-lg:0 8px 40px rgba(0,0,0,0.10);
  --shadow-g:0 8px 40px rgba(61,190,41,0.20);
  --c-protein:#3DBE29;--c-fat:#f59e0b;--c-carbs:#3b82f6;
}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}

/* NAV */
nav{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;padding:0 48px;background:rgba(255,255,255,0.96);backdrop-filter:blur(24px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-logo img{height:32px;mix-blend-mode:multiply}
.nav-logo span{font-weight:900;font-size:1.05rem;color:var(--text);letter-spacing:-.02em}
.nav-logo b{color:var(--g)}
.nav-links{display:flex;gap:28px}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.875rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-links a.active{color:var(--g);font-weight:600}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-pill{font-size:.8rem;font-weight:600;color:var(--g);border:1.5px solid var(--border-g);padding:6px 16px;border-radius:100px;text-decoration:none;transition:all .2s}
.nav-pill:hover{background:var(--g-dim)}
.nav-cta{background:var(--g);color:#fff;padding:9px 22px;border-radius:10px;text-decoration:none;font-weight:700;font-size:.85rem;box-shadow:var(--shadow-g);transition:all .2s}
.nav-cta:hover{background:var(--g2);transform:translateY(-1px)}
@media(max-width:700px){.nav-links{display:none}.nav-pill{display:none}nav{padding:0 20px}}

/* HERO */
.hero{background:linear-gradient(160deg,#fff 0%,var(--bg2) 55%,var(--bg3) 100%);padding:calc(var(--nav-h) + 52px) 24px 52px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--g-dim);border:1px solid var(--border-g);padding:6px 16px;border-radius:100px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--g);margin-bottom:22px}
.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:900;line-height:1.08;letter-spacing:-.03em;max-width:760px;margin:0 auto 16px}
.hero-sub{font-size:1rem;color:var(--muted);max-width:560px;margin:0 auto;line-height:1.8}

/* CALCULATOR SECTION */
.calc-section{max-width:860px;margin:0 auto;padding:44px 24px 40px}

/* UNIT TOGGLE */
.unit-toggle{display:flex;background:var(--bg2);border:1px solid var(--border);border-radius:10px;padding:4px;width:fit-content;margin:0 auto 36px}
.unit-btn{padding:8px 28px;border-radius:7px;font-size:.85rem;font-weight:600;cursor:pointer;background:none;border:none;color:var(--muted);transition:all .2s;font-family:inherit}
.unit-btn.active{background:#fff;color:var(--text);box-shadow:0 1px 8px rgba(0,0,0,0.08)}

/* FORM CARD */
.calc-card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:40px;box-shadow:var(--shadow)}
@media(max-width:580px){.calc-card{padding:26px 20px}}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:580px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:.82rem;font-weight:600;color:var(--text)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.field input,.field select{width:100%;padding:11px 14px;border:1.5px solid var(--border);border-radius:10px;font-size:.95rem;font-family:inherit;color:var(--text);background:#fff;transition:border-color .2s,box-shadow .2s;outline:none;-webkit-appearance:none;appearance:none}
.field input:focus,.field select:focus{border-color:var(--g);box-shadow:0 0 0 3px var(--g-dim)}
.field input::placeholder{color:var(--muted2)}
.field select{cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.sex-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sex-btn{padding:11px;border:1.5px solid var(--border);border-radius:10px;font-size:.9rem;font-weight:600;cursor:pointer;background:#fff;color:var(--muted);transition:all .2s;font-family:inherit}
.sex-btn.active{border-color:var(--g);color:var(--g);background:var(--g-dim)}
.field-hint{font-size:.74rem;color:var(--muted2)}
.calc-btn{width:100%;margin-top:28px;padding:16px;background:var(--g);color:#fff;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;box-shadow:var(--shadow-g);transition:all .2s;letter-spacing:-.01em}
.calc-btn:hover{background:var(--g2);transform:translateY(-1px);box-shadow:0 12px 32px rgba(61,190,41,0.35)}
.calc-btn:active{transform:none}
.form-error{display:none;margin-top:14px;font-size:.84rem;color:#ef4444;padding:10px 14px;background:rgba(239,68,68,0.07);border-radius:8px;border:1px solid rgba(239,68,68,0.2)}

/* RESULTS */
#results{margin-top:40px}
.results-hidden{display:none!important}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.results-visible{animation:fadeUp .45s ease forwards}

/* HERO RESULT BANNER */
.res-banner{background:linear-gradient(135deg,var(--g) 0%,#2ecc71 100%);border-radius:18px;padding:32px 36px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:24px}
.res-label{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;opacity:.85;margin-bottom:4px}
.res-value{font-size:clamp(2.6rem,6vw,4rem);font-weight:900;line-height:1;letter-spacing:-.04em}
.res-unit{font-size:1rem;font-weight:500;opacity:.75;margin-left:6px}
.res-sub{font-size:.84rem;opacity:.82;margin-top:6px;line-height:1.6}
.res-badge{background:rgba(255,255,255,0.18);border-radius:10px;padding:12px 18px;font-size:.78rem;font-weight:600;line-height:1.6;text-align:center}
.res-badge span{display:block;font-size:.72rem;opacity:.8;font-weight:500;margin-top:2px}

/* STAT GRID (generic numeric outputs) */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
@media(max-width:680px){.stat-grid{grid-template-columns:1fr}}
.stat-card{background:#fff;border:1.5px solid var(--border);border-radius:var(--r);padding:24px 22px;transition:all .25s}
.stat-card:hover{border-color:var(--border-g);box-shadow:var(--shadow-lg)}
.stat-card.featured{border-color:var(--border-g);box-shadow:0 4px 24px rgba(61,190,41,0.12)}
.stat-tag{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:4px 12px;border-radius:100px;display:inline-block;margin-bottom:14px;background:var(--g-dim);color:var(--g);border:1px solid var(--border-g)}
.stat-tag.lose{background:rgba(239,68,68,0.10);color:#ef4444;border:none}
.stat-tag.gain{background:rgba(59,130,246,0.10);color:#3b82f6;border:none}
.stat-num{font-size:2rem;font-weight:900;letter-spacing:-.04em;line-height:1}
.stat-unit{font-size:.8rem;color:var(--muted);font-weight:500;margin-top:2px;margin-bottom:4px}
.stat-note{font-size:.74rem;color:var(--muted2)}

/* MACRO BAR */
.macro-bar{height:8px;border-radius:100px;overflow:hidden;display:flex;background:var(--border);margin:16px 0}
.bar-seg{height:100%;transition:flex-basis .6s ease}
.bar-protein{background:var(--c-protein)}
.bar-fat{background:var(--c-fat)}
.bar-carbs{background:var(--c-carbs);flex:1}
.macro-list{display:flex;flex-direction:column;gap:8px}
.macro-row{display:flex;align-items:center;justify-content:space-between;font-size:.82rem}
.macro-name{display:flex;align-items:center;gap:7px;color:var(--muted);font-weight:500}
.macro-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.macro-val{font-weight:700;color:var(--text)}
.macro-pct{font-size:.71rem;color:var(--muted2);margin-left:3px}

/* APP CTA */
.app-cta{background:var(--bg2);border:1.5px solid var(--border-g);border-radius:20px;padding:34px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.app-cta-text h3{font-size:1.15rem;font-weight:800;margin-bottom:6px;letter-spacing:-.02em}
.app-cta-text p{font-size:.87rem;color:var(--muted);line-height:1.75;max-width:460px}
.app-cta-btns{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.btn-green{display:inline-block;background:var(--g);color:#fff;padding:12px 22px;border-radius:10px;text-decoration:none;font-weight:700;font-size:.87rem;box-shadow:var(--shadow-g);transition:all .2s;white-space:nowrap}
.btn-green:hover{background:var(--g2);transform:translateY(-1px)}
.btn-outline{display:inline-block;border:1.5px solid var(--border-g);color:var(--g);padding:12px 22px;border-radius:10px;text-decoration:none;font-weight:600;font-size:.87rem;transition:all .2s;white-space:nowrap}
.btn-outline:hover{background:var(--g-dim)}

/* RELATED CALCULATORS BAR */
.calc-related{max-width:860px;margin:0 auto;padding:8px 24px 64px}
.calc-related h2{font-size:1.2rem;font-weight:800;letter-spacing:-.02em;margin-bottom:18px;text-align:center}
.calc-chips{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.calc-chip{display:block;background:#fff;border:1.5px solid var(--border);border-radius:var(--r);padding:18px 20px;text-decoration:none;transition:all .22s}
.calc-chip:hover{border-color:var(--border-g);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.calc-chip b{display:block;font-size:.95rem;font-weight:800;color:var(--text);letter-spacing:-.01em;margin-bottom:3px}
.calc-chip span{font-size:.8rem;color:var(--muted);line-height:1.5}
.calc-chip.is-current{border-color:var(--border-g);background:var(--g-dim)}
.calc-chip.is-current b{color:var(--g)}

/* INFO / FORMULA */
.info-section{max-width:760px;margin:0 auto;padding:0 24px 64px}
.s-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--g);margin-bottom:12px}
.s-eyebrow::before{content:'';width:18px;height:1.5px;background:var(--g)}
.s-h{font-size:1.5rem;font-weight:800;letter-spacing:-.025em;margin-bottom:14px}
.s-lead{color:var(--muted);font-size:.92rem;line-height:1.8;margin-bottom:24px}
.s-lead a{color:var(--g);text-decoration:none;font-weight:600}
.s-lead a:hover{text-decoration:underline}
.formula-box{background:var(--bg2);border:1.5px solid var(--border-g);border-radius:var(--r);padding:26px 30px;margin:20px 0}
.formula-box h4{font-weight:700;font-size:.8rem;color:var(--g);text-transform:uppercase;letter-spacing:.08em;margin-bottom:14px}
.formula-line{font-size:.9rem;color:var(--text);margin-bottom:8px;line-height:1.6}
.formula-line:last-child{margin-bottom:0}
.formula-line b{color:var(--g);font-weight:700}
.act-table{width:100%;border-collapse:collapse;font-size:.84rem}
.act-table th{text-align:left;padding:10px 12px;font-size:.73rem;text-transform:uppercase;letter-spacing:.06em;border-bottom:2px solid var(--border-g);color:var(--muted)}
.act-table td{padding:10px 12px;border-bottom:1px solid var(--border);line-height:1.5}
.act-table tr:last-child td{border-bottom:none}
.act-table tr:hover td{background:var(--bg2)}
.mult{font-weight:700;color:var(--g)}

/* FAQ */
.faq-section{max-width:760px;margin:0 auto;padding:0 24px 80px}
.faq-list{border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;font-size:.93rem;font-weight:600;cursor:pointer;color:var(--text);font-family:inherit;gap:16px;line-height:1.4}
.faq-icon{width:22px;height:22px;border:1.5px solid var(--border-g);border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--g);transition:transform .25s;font-size:.8rem;font-weight:700}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-a{max-height:600px}
.faq-a-inner{padding:0 24px 20px;font-size:.9rem;color:var(--muted);line-height:1.8}

/* HUB GRID */
.hub-section{max-width:1000px;margin:0 auto;padding:44px 24px 72px}
.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.hub-card{display:flex;flex-direction:column;background:#fff;border:1.5px solid var(--border);border-radius:20px;padding:30px 28px;text-decoration:none;transition:all .25s}
.hub-card:hover{border-color:var(--border-g);box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.hub-icon{width:46px;height:46px;border-radius:12px;background:var(--g-dim);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:18px}
.hub-card h3{font-size:1.12rem;font-weight:800;color:var(--text);letter-spacing:-.02em;margin-bottom:8px}
.hub-card p{font-size:.87rem;color:var(--muted);line-height:1.7;flex:1}
.hub-card .hub-go{margin-top:16px;font-size:.84rem;font-weight:700;color:var(--g)}

/* FOOTER */
footer{background:var(--bg);border-top:1px solid var(--border);padding:40px 48px}
.footer-inner{max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}
.footer-brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.footer-brand img{height:28px;mix-blend-mode:multiply}
.footer-brand span{font-weight:800;font-size:.95rem;color:var(--text)}
.footer-brand b{color:var(--g)}
.footer-links{display:flex;gap:28px;flex-wrap:wrap}
.footer-links a{font-size:.82rem;color:var(--muted);text-decoration:none;transition:color .2s;font-weight:500}
.footer-links a:hover{color:var(--g)}
footer p{font-size:.78rem;color:var(--muted2)}
@media(max-width:600px){footer{padding:32px 20px}.footer-inner{flex-direction:column;text-align:center}}