/* BMI Calculator — stylesheet */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #f472b6; --primary-dark: #db2777; --secondary: #fb923c;
  --accent: #4ECDC4;
  --bg: #0f0f14; --bg-surface: #18181f; --bg-card: #1e1e28; --bg-card-hover: #25253a;
  --border: rgba(255,255,255,.08); --border-hover: rgba(244,114,182,.4);
  --text: #e8e8f0; --text-muted: #8888a8; --text-faint: #555570;
  --success: #0fd850; --warning: #fde68a; --error: #ff6b6b;
  --bmi-under: #60a5fa; --bmi-normal: #4ade80; --bmi-over: #fbbf24; --bmi-obese: #f87171;
  --radius-sm: 8px; --radius-md: 14px; --radius-lg: 20px;
  --transition: .2s cubic-bezier(.4,0,.2,1); --max-w: 1280px;
}
html { scroll-behavior: smooth; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; min-height: 100vh; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
svg { display: block; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.container { width: 100%; max-width: var(--max-w); margin-inline: auto; padding-inline: clamp(16px,4vw,48px); }

/* ── HEADER ──────────────────────────────────────────────── */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(15,15,20,.88); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); transition: box-shadow var(--transition); }
.site-header.scrolled { box-shadow: 0 4px 32px rgba(0,0,0,.4); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; }
.logo-text { font-size: 1.1rem; font-weight: 700; letter-spacing: -.02em; background: linear-gradient(135deg,#fff 40%,var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.main-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-link { padding: 6px 14px; border-radius: var(--radius-sm); font-size: .9rem; font-weight: 500; color: var(--text-muted); transition: color var(--transition), background var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--text); background: rgba(255,255,255,.06); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; margin-left: auto; padding: 8px; border-radius: var(--radius-sm); }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--text-muted); border-radius: 2px; transition: all var(--transition); }
.mobile-nav { display: none; flex-direction: column; padding: 12px 16px 16px; border-top: 1px solid var(--border); background: var(--bg-surface); gap: 2px; }
.mobile-nav.open { display: flex; }

/* ── BREADCRUMB ──────────────────────────────────────────── */
.breadcrumb { padding: 12px 0 0; }
.breadcrumb-list { display: flex; align-items: center; gap: 6px; list-style: none; font-size: .8rem; color: var(--text-faint); flex-wrap: wrap; }
.breadcrumb-list a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb-list a:hover { color: var(--text); }
.breadcrumb-sep { color: var(--text-faint); }

/* ── HERO ────────────────────────────────────────────────── */
.tool-hero { padding: clamp(32px,5vw,56px) 0 0; background: radial-gradient(ellipse 90% 50% at 50% -5%, rgba(244,114,182,.18) 0%, transparent 70%); }
.tool-hero-inner { max-width: 760px; margin-inline: auto; text-align: center; padding-bottom: clamp(24px,4vw,40px); }
.tool-badge-row { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.tool-cat-badge { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px; font-size: .72rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; border: 1px solid; }
.badge-health { background: rgba(244,114,182,.1); border-color: rgba(244,114,182,.3); color: #f9a8d4; }
.badge-free   { background: rgba(251,146,60,.1);  border-color: rgba(251,146,60,.3);  color: #fdba74; }
.tool-title { font-size: clamp(2rem,5vw,3.2rem); font-weight: 800; letter-spacing: -.04em; margin-bottom: 12px; line-height: 1.15; }
.gradient-text { background: linear-gradient(135deg,var(--primary),var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.tool-subtitle { font-size: 1rem; color: var(--text-muted); max-width: 540px; margin: 0 auto 20px; }
.tool-meta-row { display: flex; align-items: center; justify-content: center; gap: 20px; flex-wrap: wrap; font-size: .82rem; color: var(--text-faint); }
.tool-meta-item { display: flex; align-items: center; gap: 5px; }
.tool-meta-item svg { width: 14px; height: 14px; color: var(--success); }

/* ── TOOL SECTION ────────────────────────────────────────── */
.tool-section { padding: clamp(24px,4vw,40px) 0 clamp(40px,6vw,64px); }

/* ── CALCULATOR LAYOUT ───────────────────────────────────── */
.calc-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }

/* ── INPUT CARD ──────────────────────────────────────────── */
.input-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.card-title { font-size: 1rem; font-weight: 800; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.card-title svg { width: 18px; height: 18px; color: var(--primary); }

/* unit toggle */
.unit-toggle { display: flex; background: var(--bg-surface); border-radius: var(--radius-sm); padding: 3px; gap: 3px; margin-bottom: 22px; }
.unit-btn { flex: 1; padding: 7px; border-radius: 6px; font-size: .85rem; font-weight: 600; color: var(--text-muted); background: transparent; transition: all var(--transition); cursor: pointer; border: none; }
.unit-btn.active { background: rgba(244,114,182,.15); color: #f9a8d4; border: 1px solid rgba(244,114,182,.3); }

/* input groups */
.input-group { margin-bottom: 18px; }
.input-label { display: flex; align-items: center; justify-content: space-between; font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 8px; }
.input-hint { font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--primary); font-size: .78rem; }
.num-field { width: 100%; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); font: inherit; font-size: 1rem; padding: 11px 14px; outline: none; transition: border-color var(--transition); }
.num-field:focus { border-color: var(--primary); }
.num-field::placeholder { color: var(--text-faint); }
.dual-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.dual-label { font-size: .75rem; color: var(--text-faint); margin-top: 6px; text-align: center; }

/* age / sex row */
.meta-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 20px; }
.sex-btns { display: flex; gap: 8px; }
.sex-btn { flex: 1; padding: 10px; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; border: 1px solid var(--border); color: var(--text-muted); background: transparent; transition: all var(--transition); cursor: pointer; text-align: center; }
.sex-btn.active { border-color: rgba(244,114,182,.5); background: rgba(244,114,182,.1); color: #f9a8d4; }

/* calculate button */
.btn-calc { width: 100%; padding: 13px; border-radius: var(--radius-md); font-size: .95rem; font-weight: 700; background: linear-gradient(135deg,var(--primary),var(--secondary)); color: #fff; border: none; cursor: pointer; transition: opacity var(--transition), transform var(--transition); margin-top: 4px; display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn-calc:hover { opacity: .9; transform: translateY(-1px); }
.btn-calc svg { width: 16px; height: 16px; }

/* ── RESULT CARD ─────────────────────────────────────────── */
.result-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; display: flex; flex-direction: column; gap: 20px; }

/* empty state */
.result-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; min-height: 320px; color: var(--text-faint); text-align: center; }
.result-empty svg { width: 48px; height: 48px; opacity: .25; }
.result-empty p { font-size: .9rem; }

/* bmi display */
.bmi-display { text-align: center; }
.bmi-number { font-size: clamp(3rem,8vw,5rem); font-weight: 900; line-height: 1.2; letter-spacing: -.02em; padding: 0 2px; display: inline-block; }
.bmi-category { display: inline-flex; align-items: center; gap: 6px; padding: 4px 16px; border-radius: 999px; font-size: .85rem; font-weight: 700; margin-top: 8px; }
.bmi-desc { font-size: .85rem; color: var(--text-muted); margin-top: 8px; }

/* gauge */
.bmi-gauge-wrap { position: relative; }
.bmi-gauge-track { height: 12px; border-radius: 999px; background: linear-gradient(90deg, #60a5fa 0%, #4ade80 25%, #fbbf24 50%, #fb923c 70%, #f87171 100%); position: relative; overflow: visible; }
.bmi-gauge-needle { position: absolute; top: 50%; width: 3px; height: 22px; background: #fff; border-radius: 2px; transform: translate(-50%, -50%); transition: left .6s cubic-bezier(.34,1.56,.64,1); box-shadow: 0 0 6px rgba(255,255,255,.5); }
.bmi-gauge-labels { display: flex; justify-content: space-between; margin-top: 6px; font-size: .7rem; color: var(--text-faint); }

/* weight range */
.weight-range-card { background: var(--bg-surface); border-radius: var(--radius-md); padding: 14px 18px; }
.wr-title { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 10px; }
.wr-row { display: flex; align-items: center; justify-content: space-between; font-size: .88rem; padding: 5px 0; border-bottom: 1px solid var(--border); }
.wr-row:last-child { border-bottom: none; }
.wr-cat { color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.wr-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.wr-range { font-weight: 700; color: var(--text); }

/* ideal weight */
.ideal-card { background: rgba(244,114,182,.06); border: 1px solid rgba(244,114,182,.2); border-radius: var(--radius-md); padding: 14px 18px; }
.ideal-title { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: #f9a8d4; margin-bottom: 8px; }
.ideal-range { font-size: 1.2rem; font-weight: 800; color: var(--text); }
.ideal-sub { font-size: .8rem; color: var(--text-muted); margin-top: 3px; }

/* bmi table */
.bmi-table-section { margin-bottom: 20px; }
.bmi-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.bmi-table th { background: rgba(244,114,182,.06); color: var(--text); font-weight: 700; padding: 9px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.bmi-table td { padding: 9px 14px; border-bottom: 1px solid rgba(255,255,255,.04); color: var(--text-muted); }
.bmi-table tr:last-child td { border-bottom: none; }
.bmi-table .cat-chip { display: inline-flex; align-items: center; gap: 5px; padding: 2px 10px; border-radius: 999px; font-size: .75rem; font-weight: 700; }

/* ── AD ──────────────────────────────────────────────────── */
.ad-slot { background: var(--bg-card); border: 1px dashed rgba(255,255,255,.06); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--text-faint); font-size: .75rem; text-align: center; }
.ad-leaderboard { width: 100%; height: 90px; margin: 0 0 28px; }
.ad-incontent { width: 100%; min-height: 100px; margin: 24px 0; }

/* ── INFO TABS ───────────────────────────────────────────── */
.info-section { padding: clamp(24px,4vw,40px) 0; border-top: 1px solid var(--border); }
.info-tabs-nav { display: flex; gap: 4px; margin-bottom: 28px; flex-wrap: wrap; }
.info-tab-btn { padding: 8px 18px; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; color: var(--text-muted); background: transparent; border: 1px solid transparent; transition: all var(--transition); cursor: pointer; }
.info-tab-btn:hover { color: var(--text); background: rgba(255,255,255,.04); }
.info-tab-btn.active { color: var(--text); background: rgba(244,114,182,.1); border-color: rgba(244,114,182,.3); }
.info-tab-pane { display: none; }
.info-tab-pane.active { display: block; }
.prose { max-width: 820px; }
.prose h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 14px; margin-top: 32px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.1rem; font-weight: 700; margin: 22px 0 10px; }
.prose p { color: var(--text-muted); margin-bottom: 14px; line-height: 1.8; }
.prose ul, .prose ol { color: var(--text-muted); padding-left: 22px; margin-bottom: 14px; }
.prose li { margin-bottom: 6px; line-height: 1.7; }
.prose strong { color: var(--text); font-weight: 700; }
.prose code { background: rgba(244,114,182,.1); color: #f9a8d4; padding: 2px 7px; border-radius: 5px; font-size: .88em; font-family: 'Fira Code', monospace; }

/* steps */
.steps-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 16px; margin-top: 24px; }
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; }
.step-num { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg,var(--primary),var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: .95rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.step-title { font-size: .95rem; font-weight: 700; margin-bottom: 6px; }
.step-desc { font-size: .83rem; color: var(--text-muted); line-height: 1.6; }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-section { padding: clamp(24px,4vw,40px) 0; border-top: 1px solid var(--border); }
.section-title { font-size: 1.6rem; font-weight: 800; margin-bottom: 24px; }
.faq-list { max-width: 820px; display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; font-size: .95rem; font-weight: 600; color: var(--text); text-align: left; gap: 12px; cursor: pointer; background: transparent; }
.faq-q:hover { background: rgba(255,255,255,.02); }
.faq-chevron { width: 18px; height: 18px; flex-shrink: 0; color: var(--text-muted); transition: transform .25s; }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner { padding: 0 20px 16px; font-size: .88rem; color: var(--text-muted); line-height: 1.75; border-top: 1px solid var(--border); padding-top: 12px; }

/* ── TAGS ────────────────────────────────────────────────── */
.tags-section { padding: clamp(16px,3vw,28px) 0; border-top: 1px solid var(--border); }
.tags-row { display: flex; align-items: flex-start; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.tags-label { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--text-faint); margin-top: 6px; flex-shrink: 0; }
.tag-chip { display: inline-flex; padding: 5px 12px; border-radius: 999px; font-size: .78rem; font-weight: 600; border: 1px solid var(--border); color: var(--text-muted); transition: all var(--transition); }
.tag-chip:hover { border-color: rgba(244,114,182,.5); color: var(--text); }
.hashtag-chip { background: rgba(244,114,182,.07); border-color: rgba(244,114,182,.2); color: #f9a8d4; }

/* ── REPORT ──────────────────────────────────────────────── */
.report-strip { padding: 14px 0; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 12px; }
.report-text { font-size: .83rem; color: var(--text-faint); }
.btn-report { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: var(--radius-sm); font-size: .8rem; font-weight: 600; color: var(--text-muted); border: 1px solid var(--border); background: transparent; transition: all var(--transition); cursor: pointer; }
.btn-report:hover { border-color: var(--error); color: var(--error); background: rgba(255,107,107,.06); }
.btn-report svg { width: 13px; height: 13px; }

/* ── MODAL ───────────────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.7); backdrop-filter: blur(4px); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; max-width: 460px; width: 100%; }
.modal-title { font-size: 1.1rem; font-weight: 800; margin-bottom: 6px; }
.modal-sub { font-size: .85rem; color: var(--text-muted); margin-bottom: 20px; }
.report-options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.report-option { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); cursor: pointer; transition: all var(--transition); font-size: .88rem; color: var(--text-muted); }
.report-option:hover, .report-option.selected { border-color: var(--primary); color: var(--text); background: rgba(244,114,182,.06); }
.report-option input { display: none; }
.report-radio { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--border); flex-shrink: 0; transition: all var(--transition); }
.report-option.selected .report-radio { border-color: var(--primary); background: var(--primary); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }
.btn-cancel { padding: 9px 18px; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; color: var(--text-muted); border: 1px solid var(--border); background: transparent; cursor: pointer; transition: all var(--transition); }
.btn-cancel:hover { color: var(--text); }
.btn-submit { padding: 9px 18px; border-radius: var(--radius-sm); font-size: .88rem; font-weight: 600; background: var(--primary); color: #fff; border: none; cursor: pointer; transition: background var(--transition); }
.btn-submit:hover { background: var(--primary-dark); }
.btn-submit:disabled { opacity: .5; cursor: default; }
.report-success { text-align: center; padding: 16px 0; }
.report-success-icon { font-size: 2.5rem; margin-bottom: 10px; }
.report-success h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.report-success p { font-size: .88rem; color: var(--text-muted); }

/* ── RELATED ─────────────────────────────────────────────── */
.related-section { padding: clamp(24px,4vw,40px) 0; border-top: 1px solid var(--border); }
.related-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; flex-wrap: wrap; gap: 10px; }
.related-title { font-size: 1.3rem; font-weight: 800; }
.btn-view-all { display: inline-flex; align-items: center; gap: 5px; padding: 7px 16px; border-radius: var(--radius-sm); font-size: .83rem; font-weight: 600; border: 1px solid var(--border); color: var(--text-muted); transition: all var(--transition); }
.btn-view-all:hover { border-color: var(--primary); color: var(--text); }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 16px; }
.related-tool-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; transition: all var(--transition); display: flex; flex-direction: column; gap: 10px; }
.related-tool-card:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.3); }
.related-tool-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.related-tool-icon svg { width: 20px; height: 20px; color: #fff; }
.related-tool-name { font-size: .95rem; font-weight: 700; }
.related-tool-desc { font-size: .8rem; color: var(--text-muted); line-height: 1.5; flex: 1; }
.related-tool-link { display: inline-flex; align-items: center; gap: 5px; font-size: .8rem; font-weight: 600; color: var(--primary); margin-top: 4px; }
.blog-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 16px; }
.blog-card-sm { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; display: flex; flex-direction: column; gap: 8px; transition: all var(--transition); }
.blog-card-sm:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.3); }
.blog-cat-badge { display: inline-flex; padding: 2px 9px; border-radius: 999px; font-size: .7rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; width: fit-content; }
.blog-card-title { font-size: .95rem; font-weight: 700; line-height: 1.4; }
.blog-card-excerpt { font-size: .82rem; color: var(--text-muted); line-height: 1.6; flex: 1; }
.blog-card-meta { font-size: .75rem; color: var(--text-faint); }
.blog-read-link { display: inline-flex; align-items: center; gap: 4px; font-size: .8rem; font-weight: 600; color: var(--primary); margin-top: 4px; }

/* ── TOAST ───────────────────────────────────────────────── */
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px); background: var(--bg-card); border: 1px solid rgba(15,216,80,.3); border-radius: 999px; padding: 10px 20px; font-size: .88rem; font-weight: 600; color: var(--success); z-index: 300; transition: transform .3s cubic-bezier(.34,1.56,.64,1), opacity .3s; opacity: 0; pointer-events: none; white-space: nowrap; box-shadow: 0 8px 32px rgba(0,0,0,.5); }
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ── FOOTER ──────────────────────────────────────────────── */
.site-footer { background: var(--bg-surface); border-top: 1px solid var(--border); padding: clamp(32px,5vw,56px) 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand-text { font-size: .88rem; color: var(--text-muted); line-height: 1.7; margin: 12px 0 0; max-width: 260px; }
.footer-heading { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--text-faint); margin-bottom: 14px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: .88rem; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--text); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 24px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 12px; font-size: .82rem; color: var(--text-faint); }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .footer-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .blog-cards-grid { grid-template-columns: 1fr; }
  .meta-row { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
  .related-grid { grid-template-columns: 1fr; }
}