@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,wght@0,300;0,400;0,500;1,300;1,400&family=Outfit:wght@300;400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #F7F6F2;
  --white: #FFFFFF;
  --primary: #141412;
  --accent: #2F7A5E;
  --accent-light: #E6F4EE;
  --accent2: #E8A320;
  --muted: #6E6C67;
  --border: #E3E1DC;
  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Outfit', sans-serif;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 2px 8px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--primary); font-size: 16px; overflow-x: hidden; line-height: 1.6; }

/* NAV */
nav { background: var(--white); border-bottom: 1px solid var(--border); padding: 0 20px; position: sticky; top: 0; z-index: 999; }
.nav-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-family: var(--font-serif); font-size: 1.35rem; font-weight: 500; letter-spacing: -0.02em; color: var(--primary); text-decoration: none; }
.logo span { color: var(--accent); }
.nav-links { display: flex; gap: 4px; list-style: none; }
.nav-links a { font-size: 0.85rem; font-weight: 500; color: var(--muted); text-decoration: none; padding: 7px 13px; border-radius: 50px; transition: all 0.18s; }
.nav-links a:hover { background: var(--bg); color: var(--primary); }
.nav-links a.active { background: var(--accent-light); color: var(--accent); }
.nav-cta { background: var(--accent) !important; color: white !important; font-weight: 600 !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; background: none; border: none; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--primary); border-radius: 2px; }
.mobile-menu { display: none; background: var(--white); border-bottom: 1px solid var(--border); padding: 12px 20px 20px; }
.mobile-menu.open { display: block; }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.mobile-menu ul li a { display: block; padding: 11px 14px; font-size: 0.93rem; font-weight: 500; color: var(--muted); text-decoration: none; border-radius: 10px; }
.mobile-menu ul li a:hover, .mobile-menu ul li a.active { background: var(--accent-light); color: var(--accent); }
.mobile-menu .m-cta { display: block; margin-top: 8px; padding: 13px; background: var(--accent); color: white; font-weight: 600; border-radius: 10px; text-align: center; text-decoration: none; font-size: 0.93rem; }

/* ADS */
.ad-wrap { text-align: center; padding: 14px 20px; background: var(--white); border-bottom: 1px solid var(--border); }
.ad-wrap.mid { background: var(--bg); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 24px 20px; }
.ad-wrap.bottom { border-top: 1px solid var(--border); border-bottom: none; padding: 24px 20px; background: var(--white); }
.ad-label { font-size: 0.62rem; color: #C0BDB8; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 5px; }
.ad-slot { display: inline-flex; align-items: center; justify-content: center; background: #F0EEE9; border: 1.5px dashed #D0CEC8; border-radius: 8px; color: #B8B5B0; font-size: 0.73rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.ad-728x90 { width: 728px; height: 90px; max-width: 100%; }
.ad-320x100 { width: 320px; height: 100px; max-width: 100%; }
.ad-320x50 { width: 320px; height: 50px; max-width: 100%; }
.ad-300x250 { width: 300px; height: 250px; }
.ad-300x600 { width: 300px; height: 600px; }
.desktop-ad { display: inline-flex; }
.mobile-ad { display: none; }

/* STATS BAR */
.stats-bar { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 18px 24px; }
.stats-inner { max-width: 1100px; margin: 0 auto; display: flex; justify-content: center; gap: 48px; align-items: center; }
.stat-item { text-align: center; }
.stat-num { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 400; letter-spacing: -0.03em; }
.stat-label { font-size: 0.74rem; color: var(--muted); margin-top: 2px; }
.stat-divider { width: 1px; height: 32px; background: var(--border); }

/* CONTENT + SIDEBAR */
.content-sidebar { max-width: 1100px; margin: 0 auto; padding: 48px 24px 60px; display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.sidebar-ad { position: sticky; top: 76px; display: flex; flex-direction: column; align-items: center; gap: 16px; }

/* CALC CARDS */
.section-heading { font-family: var(--font-serif); font-size: 1.9rem; font-weight: 400; letter-spacing: -0.03em; margin-bottom: 6px; }
.section-heading em { color: var(--accent); font-style: italic; }
.section-sub { font-size: 0.87rem; color: var(--muted); font-weight: 300; margin-bottom: 28px; }
.calc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.calc-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; text-decoration: none; color: inherit; display: block; transition: all 0.22s; }
.calc-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 16px; }
.card-icon { width: 46px; height: 46px; background: var(--accent-light); border-radius: 13px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; }
.card-arrow { width: 30px; height: 30px; background: var(--bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; color: var(--muted); }
.card-title { font-family: var(--font-serif); font-size: 1.25rem; font-weight: 400; letter-spacing: -0.02em; margin-bottom: 8px; }
.card-desc { font-size: 0.86rem; color: var(--muted); font-weight: 300; line-height: 1.65; margin-bottom: 18px; }
.card-footer { display: flex; align-items: center; justify-content: space-between; }
.card-tag { font-size: 0.72rem; font-weight: 600; color: var(--accent); background: var(--accent-light); padding: 4px 12px; border-radius: 50px; }
.card-time { font-size: 0.75rem; color: var(--muted); }
.calc-card.featured { background: var(--primary); color: white; border-color: transparent; }
.calc-card.featured .card-icon { background: rgba(255,255,255,0.1); }
.calc-card.featured .card-desc { color: rgba(255,255,255,0.6); }
.calc-card.featured .card-arrow { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.6); }
.calc-card.featured .card-tag { background: rgba(47,122,94,0.3); color: #6DDFB0; }
.calc-card.featured .card-time { color: rgba(255,255,255,0.4); }

/* TOOL PAGE HEADER */
.calc-page-wrap { max-width: 1100px; margin: 0 auto; padding: 36px 24px 0; }
.breadcrumb { font-size: 0.82rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; opacity: 0.5; }
.page-title { font-family: var(--font-serif); font-size: clamp(1.9rem, 4vw, 2.7rem); font-weight: 400; letter-spacing: -0.035em; line-height: 1.15; margin-bottom: 10px; }
.page-title em { font-style: italic; color: var(--accent); }
.page-intro { font-size: 0.97rem; color: var(--muted); font-weight: 300; line-height: 1.7; max-width: 600px; }

/* CALCULATOR BOX */
.calc-box { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.unit-toggle { display: flex; background: var(--bg); border-radius: var(--radius-sm); padding: 4px; gap: 4px; margin-bottom: 24px; }
.unit-btn { flex: 1; padding: 10px; border: none; background: transparent; border-radius: 8px; font-family: var(--font-sans); font-size: 0.88rem; font-weight: 500; cursor: pointer; color: var(--muted); transition: all 0.2s; }
.unit-btn.active { background: var(--white); color: var(--primary); box-shadow: 0 1px 4px rgba(0,0,0,0.1); }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 7px; }
.form-label small { font-weight: 300; color: var(--muted); }
input[type="number"], select { width: 100%; padding: 13px 15px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-family: var(--font-sans); font-size: 1rem; color: var(--primary); background: var(--bg); outline: none; transition: border-color 0.2s; appearance: none; -webkit-appearance: none; }
input[type="number"]:focus, select:focus { border-color: var(--accent); background: var(--white); }
.calc-btn { width: 100%; padding: 15px; background: var(--accent); color: white; border: none; border-radius: var(--radius-sm); font-family: var(--font-sans); font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.2s; margin-top: 4px; }
.calc-btn:hover { background: #1d6048; transform: translateY(-1px); }

/* RESULT */
.result-box { margin-top: 22px; background: var(--accent-light); border: 1.5px solid #b8ddd0; border-radius: var(--radius); padding: 26px; display: none; }
.result-box.show { display: block; animation: fadeUp 0.3s ease; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.result-main { text-align: center; padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid #b8ddd0; }
.result-label { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.result-value { font-family: var(--font-serif); font-size: 3.8rem; font-weight: 400; letter-spacing: -0.05em; color: var(--primary); line-height: 1; }
.result-unit { font-size: 0.92rem; color: var(--muted); margin-top: 4px; }
.result-badge { display: inline-block; padding: 5px 16px; border-radius: 50px; font-size: 0.82rem; font-weight: 600; margin-top: 10px; }
.badge-normal { background: #D1FAE5; color: #065F46; }
.badge-low { background: #FEF3C7; color: #92400E; }
.badge-high { background: #FEF3C7; color: #92400E; }
.badge-obese { background: #FEE2E2; color: #991B1B; }
.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.result-item { background: rgba(255,255,255,0.75); border-radius: var(--radius-sm); padding: 13px; }
.result-item-label { font-size: 0.7rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; }
.result-item-value { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 400; color: var(--primary); }
.result-note { font-size: 0.78rem; color: var(--muted); margin-top: 14px; font-style: italic; text-align: center; line-height: 1.6; }

/* INFO */
.info-content { margin-top: 36px; }
.info-content h2 { font-family: var(--font-serif); font-size: 1.45rem; font-weight: 400; letter-spacing: -0.02em; margin: 32px 0 12px; }
.info-content h2:first-child { margin-top: 0; }
.info-content p { font-size: 0.91rem; color: var(--muted); font-weight: 300; line-height: 1.8; margin-bottom: 12px; }
.info-content strong { color: var(--primary); font-weight: 600; }
.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.87rem; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }
.data-table th { background: var(--bg); padding: 11px 15px; text-align: left; font-size: 0.74rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.data-table td { padding: 11px 15px; border-top: 1px solid var(--border); }
.data-table tr:hover td { background: var(--bg); }
.tag { display: inline-block; padding: 3px 10px; border-radius: 50px; font-size: 0.74rem; font-weight: 600; }
.tag-green { background: #D1FAE5; color: #065F46; }
.tag-yellow { background: #FEF3C7; color: #92400E; }
.tag-red { background: #FEE2E2; color: #991B1B; }
.tip-box { background: var(--accent-light); border-left: 3px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 15px 18px; margin: 18px 0; }
.tip-box p { color: var(--primary); font-size: 0.89rem; margin: 0; line-height: 1.7; }

/* FAQ */
.faq-block { margin-top: 36px; padding-top: 32px; border-top: 1px solid var(--border); }
.faq-block h2 { font-family: var(--font-serif); font-size: 1.45rem; font-weight: 400; letter-spacing: -0.02em; margin-bottom: 20px; }
.faq-item { border-bottom: 1px solid var(--border); padding: 17px 0; }
.faq-q { display: flex; justify-content: space-between; align-items: center; font-size: 0.92rem; font-weight: 500; cursor: pointer; gap: 12px; }
.faq-icon { width: 25px; height: 25px; background: var(--bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; color: var(--muted); flex-shrink: 0; transition: all 0.2s; }
.faq-a { font-size: 0.87rem; color: var(--muted); font-weight: 300; line-height: 1.75; margin-top: 10px; display: none; }
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-icon { background: var(--accent-light); color: var(--accent); }

/* RELATED */
.related-block { margin-top: 36px; padding-top: 32px; border-top: 1px solid var(--border); }
.related-block h2 { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 400; letter-spacing: -0.02em; margin-bottom: 16px; }
.related-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; text-decoration: none; color: inherit; display: flex; align-items: center; gap: 14px; transition: all 0.2s; }
.related-card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.related-icon { font-size: 1.3rem; width: 40px; height: 40px; background: var(--accent-light); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.related-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 2px; }
.related-desc { font-size: 0.77rem; color: var(--muted); font-weight: 300; }

/* REQUEST */
.request-section { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 60px 24px; }
.request-inner { max-width: 620px; margin: 0 auto; text-align: center; }
.request-inner h2 { font-family: var(--font-serif); font-size: 1.9rem; font-weight: 400; letter-spacing: -0.03em; margin-bottom: 10px; }
.request-inner h2 em { font-style: italic; color: var(--accent); }
.request-inner > p { font-size: 0.93rem; color: var(--muted); font-weight: 300; margin-bottom: 32px; line-height: 1.7; }
.request-form { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: left; }
.req-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.req-group { display: flex; flex-direction: column; gap: 6px; }
.req-group label { font-size: 0.8rem; font-weight: 600; }
.req-group input, .req-group select, .req-group textarea { padding: 11px 14px; border: 1.5px solid var(--border); border-radius: 10px; font-family: var(--font-sans); font-size: 0.9rem; background: var(--white); color: var(--primary); outline: none; width: 100%; }
.req-group.full { grid-column: 1 / -1; }
.req-group textarea { resize: vertical; height: 76px; }
.req-btn { width: 100%; margin-top: 14px; padding: 13px; background: var(--accent); color: white; border: none; border-radius: 10px; font-family: var(--font-sans); font-size: 0.93rem; font-weight: 600; cursor: pointer; }
.req-btn:hover { background: #1d6048; }

/* HOME FAQ */
.home-faq { max-width: 720px; margin: 0 auto; padding: 60px 24px; }
.home-faq h2 { font-family: var(--font-serif); font-size: 1.9rem; font-weight: 400; letter-spacing: -0.03em; margin-bottom: 8px; text-align: center; }
.home-faq > p { text-align: center; color: var(--muted); font-weight: 300; margin-bottom: 40px; font-size: 0.93rem; }

/* FOOTER */
footer { background: var(--primary); color: rgba(255,255,255,0.6); padding: 48px 24px 28px; }
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 500; color: white; margin-bottom: 12px; display: block; }
.footer-logo span { color: #6DDFB0; }
.footer-brand p { font-size: 0.84rem; line-height: 1.7; font-weight: 300; }
.source-note { font-size: 0.75rem; background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; padding: 7px 12px; margin-top: 14px; display: inline-block; }
.footer-col h4 { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.9); margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col ul li a { font-size: 0.85rem; color: rgba(255,255,255,0.5); text-decoration: none; }
.footer-col ul li a:hover { color: white; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 22px; display: flex; justify-content: space-between; align-items: center; font-size: 0.78rem; flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: rgba(255,255,255,0.4); text-decoration: none; }

/* TABLET */
@media (max-width: 900px) {
  .content-sidebar { grid-template-columns: 1fr; padding: 32px 24px 52px; }
  .sidebar-ad { display: none; }
}

/* MOBILE */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .desktop-ad { display: none !important; }
  .mobile-ad { display: inline-flex !important; }
  .stats-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 340px; }
  .stat-divider { display: none; }
  .stat-item { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 14px 10px; }
  .calc-grid { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
  .req-row { grid-template-columns: 1fr; }
  .req-group.full { grid-column: 1; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .content-sidebar { padding: 24px 18px 44px; }
  .calc-box { padding: 20px 16px; }
  .calc-page-wrap { padding: 24px 18px 0; }
  .home-faq, .request-section { padding: 44px 18px; }
}
@media (max-width: 400px) {
  .result-value { font-size: 3rem; }
  .result-grid { grid-template-columns: 1fr; }
}