/* KnowYourBody.Online — shared stylesheet */

* { box-sizing: border-box; margin: 0; padding: 0; }
*::before { box-sizing: border-box; margin: 0; padding: 0; }
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; background: var(--bg-page); color: var(--text-primary); line-height: 1.6; transition: background 0.25s, color 0.25s; }
a { color: inherit; text-decoration: none; }
:root { --blue-dark: #0C447C; --blue-mid: #185FA5; --blue-bright: #378ADD; --blue-light: #B5D4F4; --blue-pale: #E6F1FB; --teal-dark: #0F6E56; --teal-mid: #1D9E75; --teal-light: #9FE1CB; --teal-pale: #E1F5EE; --bg-page: #F8F9FA; --bg-card: #ffffff; --bg-nav: #ffffff; --bg-breadcrumb: #F0F4F8; --bg-why: #0C447C; --bg-footer: #ffffff; --bg-toggle: #E6F1FB; --bg-stat: #F0F4F8; --bg-hero: #E6F1FB; --text-primary: #2C2C2A; --text-secondary: #5F5E5A; --text-muted: #888780; --text-heading: #0C447C; --text-logo: #185FA5; --text-tag: #1D9E75; --text-why: #ffffff; --text-why-sub: #B5D4F4; --text-footer: #5F5E5A; --border: rgba(0,0,0,0.1); --toggle-icon: #185FA5; --toggle-border: #B5D4F4; --pill-bg: #E6F1FB; --pill-text: #185FA5; --val-blue: #185FA5; --val-teal: #1D9E75; --bg-input: #ffffff; --bg-ad: #ffffff; --border-input: rgba(0,0,0,0.15); --border-ad: #D3D1C7; --status-ok-bg: #E1F5EE; --status-ok-border: #9FE1CB; --status-ok-text: #0F6E56; --status-warn-bg: #FEF6E6; --status-warn-border: #F5D98B; --status-warn-text: #7A5A00; --status-high-bg: #FDEEE9; --status-high-border: #F5B8A0; --status-high-text: #A0320A; --bar-track: #E8EDF2; --bg-crumb: #F1F5F9; --bg-secondary: #F1F5F9; --icon-bg-blue: #E6F1FB; --icon-col-blue: #185FA5; --icon-bg-teal: #E1F5EE; --icon-col-teal: #1D9E75; --icon-bg-mid: #F0FAF5; --icon-col-mid: #1D9E75; --toggle-bg: #E6F1FB; --pill-active: #0C447C; --pill-text-active: #ffffff; --gauge-needle: #0C447C; --bg-sidebar: #ffffff; --amber-pale: #FEF9EC; --amber-border: #F5D98B; --amber-text: #7A5A00; --z1: #60B8E0; --z1-pale: #EBF7FC; --z2: #1D9E75; --z2-pale: #E1F5EE; --z3: #F5A623; --z3-pale: #FEF6E6; --z4: #E8613A; --z4-pale: #FDEEE9; --z5: #C0392B; --z5-pale: #FAEBE9; --table-header-bg: #0C447C; --table-header-text: #ffffff; --table-alt: #F0F4F8; --bg-highlight: #E6F1FB; --bg-formula: #0C447C; --text-formula: #E6F1FB; --border-hero: #B5D4F4; --search-bg: #ffffff; --search-border: #B5D4F4; --indigo: #4F46E5; --indigo-pale: #EEF2FF; --indigo-light: #C7D2FE; --purple: #7C3AED; --purple-pale: #F5F3FF; --purple-light: #DDD6FE; --cycle-bg: #F0F4F8; --cycle-fill-best: #0C447C; --cycle-fill-ok: #185FA5; --cycle-fill-light: #B5D4F4; --moon-color: #4F46E5; --opt-active-bg: #0C447C; --opt-active-text: #ffffff; --table-active: #E6F1FB; }
[data-theme="light"] { --blue-dark: #0C447C; --blue-mid: #185FA5; --blue-bright: #378ADD; --blue-light: #B5D4F4; --blue-pale: #E6F1FB; --teal-dark: #0F6E56; --teal-mid: #1D9E75; --teal-light: #9FE1CB; --teal-pale: #E1F5EE; --bg-page: #F8F9FA; --bg-card: #ffffff; --bg-nav: #ffffff; --bg-breadcrumb: #F0F4F8; --bg-why: #0C447C; --bg-footer: #ffffff; --bg-toggle: #E6F1FB; --bg-stat: #F0F4F8; --bg-hero: #E6F1FB; --text-primary: #2C2C2A; --text-secondary: #5F5E5A; --text-muted: #888780; --text-heading: #0C447C; --text-logo: #185FA5; --text-tag: #1D9E75; --text-why: #ffffff; --text-why-sub: #B5D4F4; --text-footer: #5F5E5A; --border: rgba(0,0,0,0.1); --toggle-icon: #185FA5; --toggle-border: #B5D4F4; --pill-bg: #E6F1FB; --pill-text: #185FA5; --val-blue: #185FA5; --val-teal: #1D9E75; --bg-input: #ffffff; --bg-ad: #ffffff; --border-input: rgba(0,0,0,0.15); --border-ad: #D3D1C7; --status-ok-bg: #E1F5EE; --status-ok-border: #9FE1CB; --status-ok-text: #0F6E56; --status-warn-bg: #FEF6E6; --status-warn-border: #F5D98B; --status-warn-text: #7A5A00; --status-high-bg: #FDEEE9; --status-high-border: #F5B8A0; --status-high-text: #A0320A; --bar-track: #E8EDF2; --bg-crumb: #F1F5F9; --bg-secondary: #F1F5F9; --icon-bg-blue: #E6F1FB; --icon-col-blue: #185FA5; --icon-bg-teal: #E1F5EE; --icon-col-teal: #1D9E75; --icon-bg-mid: #F0FAF5; --icon-col-mid: #1D9E75; --toggle-bg: #E6F1FB; --pill-active: #0C447C; --pill-text-active: #ffffff; --gauge-needle: #0C447C; --bg-sidebar: #ffffff; --amber-pale: #FEF9EC; --amber-border: #F5D98B; --amber-text: #7A5A00; --z1: #60B8E0; --z1-pale: #EBF7FC; --z2: #1D9E75; --z2-pale: #E1F5EE; --z3: #F5A623; --z3-pale: #FEF6E6; --z4: #E8613A; --z4-pale: #FDEEE9; --z5: #C0392B; --z5-pale: #FAEBE9; --table-header-bg: #0C447C; --table-header-text: #ffffff; --table-alt: #F0F4F8; --bg-highlight: #E6F1FB; --bg-formula: #0C447C; --text-formula: #E6F1FB; --border-hero: #B5D4F4; --search-bg: #ffffff; --search-border: #B5D4F4; --indigo: #4F46E5; --indigo-pale: #EEF2FF; --indigo-light: #C7D2FE; --purple: #7C3AED; --purple-pale: #F5F3FF; --purple-light: #DDD6FE; --cycle-bg: #F0F4F8; --cycle-fill-best: #0C447C; --cycle-fill-ok: #185FA5; --cycle-fill-light: #B5D4F4; --moon-color: #4F46E5; --opt-active-bg: #0C447C; --opt-active-text: #ffffff; --table-active: #E6F1FB; }
[data-theme="dark"] { --blue-dark: #B5D4F4; --blue-mid: #378ADD; --blue-bright: #85B7EB; --blue-light: #185FA5; --blue-pale: #0C3060; --teal-dark: #9FE1CB; --teal-mid: #1D9E75; --teal-light: #0F6E56; --teal-pale: #0A3D2E; --bg-page: #0F1923; --bg-card: #162130; --bg-nav: #111C28; --bg-breadcrumb: #0F1923; --bg-why: #091420; --bg-footer: #111C28; --bg-toggle: #1A2B3C; --bg-stat: #1A2B3C; --bg-hero: #0C3060; --text-primary: #E8EDF2; --text-secondary: #94A3B8; --text-muted: #64748B; --text-heading: #B5D4F4; --text-logo: #378ADD; --text-tag: #1D9E75; --text-why: #E8EDF2; --text-why-sub: #64748B; --text-footer: #64748B; --border: rgba(255,255,255,0.08); --toggle-icon: #378ADD; --toggle-border: rgba(255,255,255,0.12); --pill-bg: #0C3060; --pill-text: #378ADD; --val-blue: #378ADD; --val-teal: #1D9E75; --bg-input: #1A2B3C; --bg-ad: #162130; --border-input: rgba(255,255,255,0.14); --border-ad: rgba(255,255,255,0.08); --status-ok-bg: #0A3D2E; --status-ok-border: #0F6E56; --status-ok-text: #9FE1CB; --status-warn-bg: #2A1E00; --status-warn-border: #7A5A00; --status-warn-text: #F5D98B; --status-high-bg: #2A1208; --status-high-border: #7A3020; --status-high-text: #F5B8A0; --bar-track: #1A2B3C; --bg-crumb: #0F1923; --bg-secondary: #1A2B3C; --icon-bg-blue: #0C3060; --icon-col-blue: #378ADD; --icon-bg-teal: #0A3D2E; --icon-col-teal: #1D9E75; --icon-bg-mid: #0A3D2E; --icon-col-mid: #1D9E75; --toggle-bg: #1A2B3C; --pill-active: #378ADD; --pill-text-active: #ffffff; --gauge-needle: #E8EDF2; --bg-sidebar: #162130; --amber-pale: #2A2000; --amber-border: #7A5A00; --amber-text: #F5D98B; --z1: #60B8E0; --z1-pale: #0D2030; --z2: #1D9E75; --z2-pale: #0A3D2E; --z3: #F5A623; --z3-pale: #2A1E00; --z4: #E8613A; --z4-pale: #2A1208; --z5: #C0392B; --z5-pale: #280808; --table-header-bg: #0C447C; --table-header-text: #E8EDF2; --table-alt: #1A2B3C; --bg-highlight: #0C3060; --bg-formula: #0C3060; --text-formula: #B5D4F4; --border-hero: rgba(255,255,255,0.06); --search-bg: #1A2B3C; --search-border: rgba(255,255,255,0.1); --indigo: #818CF8; --indigo-pale: #1E1B4B; --indigo-light: #3730A3; --purple: #A78BFA; --purple-pale: #2E1065; --purple-light: #5B21B6; --cycle-bg: #1A2B3C; --cycle-fill-best: #B5D4F4; --cycle-fill-ok: #378ADD; --cycle-fill-light: #185FA5; --moon-color: #818CF8; --opt-active-bg: #378ADD; --opt-active-text: #ffffff; --table-active: #0C3060; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.nav { background: var(--bg-nav); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; transition: background 0.25s, border-color 0.25s; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 36px; height: 36px; background: var(--blue-mid); border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.logo-icon svg { width: 22px; height: 22px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-name { font-size: 17px; font-weight: 600; color: var(--text-logo); }
.logo-tag { font-size: 10px; color: var(--text-tag); letter-spacing: 0.04em; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { font-size: 14px; color: var(--text-secondary); text-decoration: none; transition: color 0.15s; }
.nav-links a:hover { color: var(--blue-mid); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-cta { background: var(--blue-mid); color: #fff; font-size: 13px; font-weight: 500; padding: 8px 18px; border-radius: 8px; transition: background 0.15s; white-space: nowrap; text-decoration: none; }
.nav-cta:hover { background: var(--blue-dark); text-decoration: none; }
.dark-toggle { width: 38px; height: 38px; border-radius: 9px; background: var(--bg-toggle); border: 1px solid var(--toggle-border); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: background 0.2s, border-color 0.2s; flex-shrink: 0; }
.dark-toggle:hover { border-color: var(--blue-mid); }
.dark-toggle svg { width: 18px; height: 18px; color: var(--toggle-icon); transition: color 0.2s; }
.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
.nav-mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-mobile-menu { display: none; background: var(--bg-nav); border-top: 1px solid var(--border); padding: 16px 24px; }
.nav-mobile-menu a { display: block; padding: 10px 0; font-size: 15px; color: var(--text-primary); border-bottom: 1px solid var(--border); text-decoration: none; }
.nav-mobile-menu a:last-child { border-bottom: none; }
.breadcrumb { background: var(--bg-breadcrumb); border-bottom: 1px solid var(--border); padding: 10px 0; font-size: 12px; color: var(--text-muted); transition: background 0.25s; }
.breadcrumb-inner { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); flex-wrap: wrap; }
.breadcrumb a { color: var(--text-muted); text-decoration: none; transition: color 0.15s; }
.breadcrumb a:hover { color: var(--blue-mid); }
.breadcrumb .sep { font-size: 10px; color: var(--text-muted); }
.breadcrumb .current { color: var(--blue-mid); font-weight: 500; }
.page-header { background: var(--bg-page); border-bottom: 1px solid var(--border); padding: 32px 0 28px; transition: background 0.25s; }
.page-header-eyebrow { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }
.page-header h1 { font-size: 32px; font-weight: 700; color: var(--text-heading); line-height: 1.2; margin-bottom: 8px; }
.page-header p { font-size: 15px; color: var(--text-secondary); max-width: 560px; }
.ad-slot { background: var(--bg-ad); border: 1px dashed var(--border-ad); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 12px; letter-spacing: 0.04em; text-transform: uppercase; transition: background 0.25s; visibility: hidden; }
.ad-banner { height: 90px; margin: 24px 0; }
.ad-slot-square { height: 250px; width: 100%; }
.main-grid { display: grid; grid-template-columns: 1fr 340px; gap: 32px; padding: 32px 0 48px; align-items: start; }
.calc-wrap { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: background 0.25s; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; }
.calc-panel { padding: 24px; }
.calc-panel + .calc-panel { border-left: 1px solid var(--border); }
.panel-title { font-size: 13px; font-weight: 600; color: var(--text-heading); letter-spacing: 0.02em; text-transform: uppercase; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.panel-title svg { width: 16px; height: 16px; color: var(--blue-mid); }
.drinks-label { font-size: 12px; font-weight: 500; color: var(--text-secondary); margin-bottom: 10px; }
.drink-rows { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.drink-row { display: grid; grid-template-columns: 28px 1fr 70px 70px; gap: 8px; align-items: center; }
.drink-emoji { font-size: 20px; text-align: center; }
.drink-name { font-size: 13px; font-weight: 500; color: var(--text-primary); }
.drink-sub { font-size: 11px; color: var(--text-muted); }
.qty-input { width: 100%; padding: 8px 10px; text-align: center; background: var(--bg-input); border: 1px solid var(--border-input); border-radius: 8px; font-size: 14px; font-weight: 600; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; -moz-appearance: textfield; }
.qty-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.qty-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.qty-input:focus { border-color: var(--blue-mid); }
.custom-section { background: var(--bg-stat); border-radius: 12px; padding: 14px 16px; margin-bottom: 18px; transition: background 0.25s; }
.custom-title { font-size: 12px; font-weight: 600; color: var(--text-heading); margin-bottom: 10px; }
.custom-row { display: grid; grid-template-columns: 1fr 80px 70px; gap: 8px; align-items: center; }
.custom-label { font-size: 12px; color: var(--text-secondary); }
.custom-input { width: 100%; padding: 7px 10px; background: var(--bg-input); border: 1px solid var(--border-input); border-radius: 7px; font-size: 13px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s; -moz-appearance: textfield; }
.custom-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.custom-input::-webkit-outer-spin-button { -webkit-appearance: none; }
.custom-input:focus { border-color: var(--blue-mid); }
.calc-btn { width: 100%; padding: 12px; background: var(--blue-mid); color: #fff; border: none; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit; transition: background 0.15s, transform 0.1s; display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 8px; letter-spacing: 0.01em; }
.calc-btn:hover { background: var(--blue-dark); }
.calc-btn:active { transform: scale(0.99); }
.calc-btn svg { width: 16px; height: 16px; }
.result-placeholder { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 320px; gap: 12px; color: var(--text-muted); font-size: 13px; text-align: center; padding: 24px; }
.result-placeholder svg { width: 44px; height: 44px; opacity: 0.4; color: var(--border); }
.result-panel { display: none; }
.units-hero { text-align: center; padding: 18px 0 16px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.units-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.units-value { font-size: 52px; font-weight: 700; line-height: 1; }
.units-suffix { font-size: 16px; color: var(--text-secondary); margin-top: 4px; }
.status-banner { border-radius: 12px; padding: 14px 18px; margin-bottom: 16px; display: flex; align-items: flex-start; gap: 12px; font-size: 14px; line-height: 1.6; }
.status-banner svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 1px; }
.status-banner.ok { background: var(--status-ok-bg); border: 1px solid var(--status-ok-border); color: var(--status-ok-text); }
.status-banner.warn { background: var(--status-warn-bg); border: 1px solid var(--status-warn-border); color: var(--status-warn-text); }
.status-banner.high { background: var(--status-high-bg); border: 1px solid var(--status-high-border); color: var(--status-high-text); }
.guideline-wrap { margin-bottom: 16px; }
.guideline-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; display: flex; justify-content: space-between; }
.guideline-track { height: 12px; background: var(--bar-track); border-radius: 99px; overflow: hidden; position: relative; }
.guideline-fill { height: 100%; border-radius: 99px; transition: width 0.5s ease; }
.guideline-marker { position: absolute; top: -3px; width: 2px; height: 18px; background: var(--text-muted); border-radius: 1px; }
.guideline-ticks { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); margin-top: 4px; }
.breakdown-title { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.breakdown-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-bottom: 14px; }
.breakdown-table td { padding: 7px 0; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.breakdown-table tr:last-child td { border-bottom: none; }
.breakdown-table .td-emoji { width: 28px; font-size: 16px; }
.breakdown-table .td-name { font-weight: 500; color: var(--text-primary); }
.breakdown-table .td-num { text-align: right; color: var(--text-muted); font-size: 12px; }
.breakdown-table .td-units { text-align: right; font-weight: 700; color: var(--text-heading); }
.result-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 14px; }
.result-stat { background: var(--bg-stat); border-radius: 10px; padding: 10px 13px; transition: background 0.25s; }
.result-stat-label { font-size: 11px; color: var(--text-muted); margin-bottom: 3px; }
.result-stat-value { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.nhs-note { background: var(--bg-stat); border-radius: 10px; padding: 12px 14px; margin-top: 14px; font-size: 12px; color: var(--text-secondary); line-height: 1.6; display: flex; gap: 10px; align-items: flex-start; transition: background 0.25s; }
.nhs-note svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 1px; color: var(--blue-mid); }
.sidebar-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 20px; margin-bottom: 20px; transition: background 0.25s; }
.sidebar-title { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.sidebar-tool { display: flex; align-items: center; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text-primary); transition: color 0.15s; text-decoration: none; }
.sidebar-tool:last-child { border-bottom: none; }
.sidebar-tool:hover { color: var(--blue-mid); }
.sidebar-tool-icon { width: 30px; height: 30px; border-radius: 7px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.sidebar-tool-icon svg { width: 15px; height: 15px; }
.sidebar-tool-icon.blue { background: var(--blue-pale); color: var(--blue-mid); }
.sidebar-tool-icon.teal { background: var(--teal-pale); color: var(--teal-mid); }
.unit-fact { padding: 9px 0; border-bottom: 1px solid var(--border); font-size: 12px; }
.unit-fact:last-child { border-bottom: none; padding-bottom: 0; }
.unit-fact-q { font-weight: 600; color: var(--text-heading); margin-bottom: 3px; }
.unit-fact-a { color: var(--text-secondary); line-height: 1.5; }
.related-strip { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 20px 24px; margin-top: 20px; transition: background 0.25s; }
.related-title { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 14px; }
.related-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.related-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; padding: 7px 14px; border: 1px solid var(--border); border-radius: 99px; color: var(--blue-mid); background: var(--bg-page); transition: all 0.15s; }
.related-pill:hover { background: var(--blue-pale); border-color: var(--blue-light); }
.related-pill svg { width: 13px; height: 13px; }
.disclaimer { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 16px 20px; margin-top: 20px; font-size: 12px; color: var(--text-muted); line-height: 1.6; display: flex; gap: 10px; align-items: flex-start; transition: background 0.25s; }
.disclaimer svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 1px; color: var(--blue-mid); }
.why-strip { background: var(--bg-why); padding: 40px 0; transition: background 0.25s; margin-top: 60px; }
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-item { text-align: center; }
.why-icon { width: 44px; height: 44px; background: rgba(255,255,255,0.08); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; }
.why-icon svg { width: 22px; height: 22px; color: var(--teal-light); }
.why-title { font-size: 15px; font-weight: 600; color: var(--text-why); margin-bottom: 4px; }
.why-desc { font-size: 13px; color: var(--text-why-sub); line-height: 1.5; }
.footer { background: var(--bg-footer); border-top: 1px solid var(--border); padding: 36px 0 24px; transition: background 0.25s; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-brand-name { font-size: 16px; font-weight: 600; color: var(--text-logo); margin-bottom: 8px; }
.footer-brand-desc { font-size: 13px; color: var(--text-footer); line-height: 1.6; }
.footer-col-title { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 13px; color: var(--text-footer); margin-bottom: 8px; text-decoration: none; transition: color 0.15s; }
.footer-col a:hover { color: var(--blue-mid); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.footer-copy { font-size: 12px; color: var(--text-muted); }
.footer-disc { font-size: 11px; color: var(--text-muted); max-width: 500px; line-height: 1.6; }
.guide { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 28px 32px; margin-top: 20px; transition: background 0.25s; }
.guide h2 { font-size: 20px; font-weight: 600; color: var(--text-heading); margin: 32px 0 12px; line-height: 1.35; }
.guide h2:first-child { margin-top: 0; }
.guide h3 { font-size: 15px; font-weight: 600; color: var(--text-primary); margin: 20px 0 8px; }
.guide p { font-size: 15px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 14px; }
.guide ul { margin: 0 0 16px 20px; }
.guide li { font-size: 15px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 8px; }
.guide a { color: var(--blue-mid); font-weight: 500; }
.guide a:hover { text-decoration: underline; }
.guide strong { color: var(--text-primary); font-weight: 600; }
.guide .formula-box { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 12px; padding: 18px 22px; margin: 0 0 18px; text-align: left; transition: background 0.25s; }
.guide .formula-label { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.guide .formula { font-family: 'SF Mono', Menlo, Consolas, monospace; font-size: 15px; color: var(--text-heading); font-weight: 600; line-height: 1.6; }
.guide .key-fact { background: var(--blue-pale); border: none; border-left: 3px solid var(--blue-mid); border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 0 0 18px; font-size: 14px; color: var(--text-secondary); line-height: 1.65; }
.guide .key-fact strong { color: var(--blue-dark); }
.guide .info-table { width: 100%; border-collapse: collapse; margin: 0 0 18px; font-size: 14px; }
.guide .info-table th { text-align: left; font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); padding: 0 12px 8px 0; border-bottom: 1px solid var(--border); }
.guide .info-table td { padding: 11px 12px 11px 0; border-bottom: 1px solid var(--border); color: var(--text-secondary); vertical-align: top; }
.guide .info-table tr:last-child td { border-bottom: none; }
.guide .info-table .cat-name { font-weight: 600; color: var(--text-primary); white-space: nowrap; }
.guide .info-table .cat-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 8px; }
.guide .faq-item { border-top: 1px solid var(--border); border-bottom: none; padding: 16px 0; }
.guide .faq-item:last-of-type { padding-bottom: 0; }
.guide .faq-q { font-size: 15px; font-weight: 600; color: var(--text-heading); margin-bottom: 7px; line-height: 1.45; }
.guide .faq-a { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.guide .faq-a p { font-size: 14px; margin-bottom: 10px; }
.guide .faq-a p:last-child { margin-bottom: 0; }
.guide .source-note { font-size: 12px; color: var(--text-muted); line-height: 1.65; margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--border); }
.mode-toggle { display: flex; background: var(--bg-toggle); border-radius: 8px; padding: 3px; margin-bottom: 20px; border: 1px solid var(--border); }
.mode-btn { flex: 1; padding: 8px 6px; font-size: 12px; font-weight: 500; border: none; background: transparent; border-radius: 6px; cursor: pointer; color: var(--text-secondary); font-family: inherit; transition: all 0.15s; display: flex; align-items: center; justify-content: center; gap: 5px; }
.mode-btn svg { width: 13px; height: 13px; }
.mode-btn.active { background: var(--blue-mid); color: #ffffff; }
.field { margin-bottom: 16px; display: flex; flex-direction: column; gap: 6px; }
.field label { display: block; font-size: 12px; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; letter-spacing: 0.01em; }
.field-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; line-height: 1.5; }
input[type="time"] { width: 100%; padding: 10px 14px; background: var(--bg-input); border: 1px solid var(--border-input); border-radius: 8px; font-size: 15px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; }
select { width: 100%; padding: 8px 10px; background: var(--bg-input); border: 1px solid var(--border-input); border-radius: 8px; font-size: 14px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; -moz-appearance: textfield; cursor: pointer; }
input[type="time"]:focus { border-color: var(--blue-mid); }
select:focus { border-color: var(--blue-mid); outline: none; }
.quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.quality-btn { padding: 9px 6px; font-size: 12px; font-weight: 500; border: 1.5px solid var(--border-input); border-radius: 9px; background: var(--bg-input); color: var(--text-secondary); cursor: pointer; text-align: center; font-family: inherit; transition: all 0.15s; }
.quality-btn .q-icon { font-size: 18px; display: block; margin-bottom: 3px; }
.quality-btn.active { background: var(--blue-mid); color: #fff; border-color: var(--blue-mid); }
.quality-btn:not(.active):hover { border-color: var(--blue-mid); color: var(--blue-mid); }
.result-mode-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; }
.time-cards { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.time-card { border-radius: 12px; padding: 13px 16px; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: default; transition: border-color 0.15s, background 0.15s; }
.time-card.best { border-color: var(--blue-mid); background: var(--blue-pale); }
.time-card.good { border-color: var(--border); background: var(--bg-stat); }
.tc-left { display: flex; align-items: center; gap: 10px; }
.tc-icon { width: 32px; height: 32px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 16px; }
.time-card.best .tc-icon { background: var(--blue-mid); }
.time-card.good .tc-icon { background: var(--bg-card); border: 1px solid var(--border); }
.tc-time { font-size: 22px; font-weight: 700; color: var(--text-heading); }
.tc-cycles { font-size: 12px; color: var(--text-muted); margin-top: 1px; }
.tc-badge { font-size: 11px; font-weight: 600; padding: 3px 9px; border-radius: 99px; white-space: nowrap; }
.time-card.best .tc-badge { background: var(--blue-mid); color: #fff; }
.time-card.good .tc-badge { background: var(--bg-stat); color: var(--text-muted); border: 1px solid var(--border); }
.cycle-vis { margin-bottom: 16px; }
.cycle-vis-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.cycle-track { display: flex; gap: 4px; align-items: center; }
.cycle-block { height: 10px; border-radius: 3px; flex: 1; transition: background 0.3s; }
.cycle-block.best { background: var(--cycle-fill-best); }
.cycle-block.partial { background: var(--cycle-fill-ok); opacity: 0.6; }
.cycle-block.empty { background: var(--cycle-bg); }
.cycle-track-labels { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); margin-top: 5px; }
.sleep-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 14px; }
.sleep-stat { background: var(--bg-stat); border-radius: 10px; padding: 11px 13px; transition: background 0.25s; }
.sleep-stat-label { font-size: 11px; color: var(--text-muted); margin-bottom: 3px; }
.sleep-stat-value { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.sleep-tip { background: var(--bg-stat); border-radius: 10px; padding: 12px 14px; font-size: 12px; color: var(--text-secondary); line-height: 1.6; display: flex; gap: 10px; align-items: flex-start; transition: background 0.25s; }
.sleep-tip svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 1px; color: var(--teal-mid); }
.science-note { background: var(--indigo-pale); border: 1px solid var(--indigo-light); border-radius: 12px; padding: 14px 16px; margin-top: 14px; font-size: 12px; color: var(--text-secondary); line-height: 1.6; transition: background 0.25s; }
.sleep-fact { padding: 10px 0; border-bottom: 1px solid var(--border); }
.sleep-fact:last-child { border-bottom: none; padding-bottom: 0; }
.sleep-fact-q { font-size: 12px; font-weight: 600; color: var(--text-heading); margin-bottom: 3px; }
.sleep-fact-a { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
a:hover { text-decoration: underline; }
.article-hero { background: var(--bg-page); border-bottom: 1px solid var(--border); padding: 36px 0 32px; transition: background 0.25s; }
.article-eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.eyebrow-cat { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.08em; text-transform: uppercase; background: var(--teal-pale); padding: 4px 12px; border-radius: 99px; border: 1px solid var(--teal-light); }
.eyebrow-time { font-size: 12px; color: var(--text-muted); }
.article-hero h1 { font-size: 36px; font-weight: 700; color: var(--text-heading); line-height: 1.2; margin-bottom: 14px; max-width: 700px; }
.article-hero .lead { font-size: 17px; color: var(--text-secondary); line-height: 1.8; max-width: 660px; }
.article-meta { margin-top: 20px; display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 13px; color: var(--text-muted); }
.meta-item { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.meta-item svg { width: 14px; height: 14px; }
.ad-mid { height: 90px; margin: 32px 0; }
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; padding: 40px 0 60px; align-items: start; }
.article-body { min-width: 0; font-size: 16px; color: var(--text-primary); line-height: 1.8; }
.toc { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 14px; padding: 20px 24px; margin-bottom: 32px; transition: background 0.25s; }
.toc-title { font-size: 12px; font-weight: 600; color: var(--text-heading); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px; }
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.toc-list li a { font-size: 14px; color: var(--blue-mid); display: flex; align-items: center; gap: 8px; transition: color 0.15s; }
.toc-list li a:hover { color: var(--blue-dark); text-decoration: none; }
.toc-list li a::before { content: ''; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--teal-mid); flex-shrink: 0; }
.prose h2 { font-size: 18px; font-weight: 700; color: var(--text-heading); margin: 32px 0 12px; padding-top: 32px; border-top: 1px solid var(--border); scroll-margin-top: 80px; }
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.prose h3 { font-size: 17px; font-weight: 600; color: var(--text-heading); margin: 24px 0 10px; }
.prose p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.prose p:last-child { margin-bottom: 0; }
.prose ul { margin: 10px 0 14px 20px; }
.prose ol { margin: 10px 0 16px 22px; }
.prose li { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 6px; }
.prose strong { color: var(--text-primary); font-weight: 600; }
.prose a { color: var(--blue-mid); }
.key-fact { background: var(--blue-pale); border: 1px solid var(--blue-light); border-left: 4px solid var(--blue-mid); border-radius: 0 12px 12px 0; padding: 16px 20px; margin: 20px 0; font-size: 15px; color: var(--text-heading); line-height: 1.7; }
.key-fact strong { color: var(--blue-mid); }
.formula-box { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 12px; padding: 20px 24px; margin: 20px 0; text-align: center; transition: background 0.25s; }
.formula-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.formula-eq { font-size: 18px; font-weight: 700; color: var(--text-heading); font-family: Georgia, 'Times New Roman', serif; line-height: 1.7; }
.formula-sub { font-size: 13px; color: var(--text-muted); margin-top: 8px; line-height: 1.6; }
.data-table-wrap { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); margin: 20px 0; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 20px 0 24px; }
.data-table thead tr { background: var(--table-header-bg); }
.data-table th { padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 600; color: var(--text-heading); letter-spacing: 0.04em; text-transform: uppercase; background: var(--bg-secondary); border-bottom: 2px solid var(--border); }
.data-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); color: var(--text-primary); vertical-align: top; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:nth-child(even) td { background: var(--table-alt); }
.data-table td strong { color: var(--text-primary); }
.multiplier { display: inline-block; background: var(--blue-pale); color: var(--blue-mid); font-size: 13px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.macro-visual { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; margin: 20px 0; transition: background 0.25s; }
.macro-visual-title { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 16px; }
.macro-bar-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.macro-bar-row:last-child { margin-bottom: 0; }
.macro-name { font-size: 12px; color: var(--text-primary); width: 56px; flex-shrink: 0; font-weight: 500; }
.macro-bar-track { flex: 1; height: 12px; border-radius: 99px; background: var(--border); overflow: hidden; }
.macro-bar-fill { height: 100%; border-radius: 99px; }
.macro-pct { font-size: 13px; font-weight: 600; color: var(--text-primary); width: 40px; text-align: right; flex-shrink: 0; }
.macro-g { font-size: 12px; color: var(--text-muted); width: 60px; text-align: right; flex-shrink: 0; }
.example-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 20px 0; }
.example-card { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 12px; padding: 16px; transition: background 0.25s; }
.example-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.example-name { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 10px; }
.example-stat { font-size: 11px; color: var(--text-muted); margin-bottom: 2px; }
.example-cals { font-size: 24px; font-weight: 700; color: var(--blue-mid); margin: 8px 0 4px; }
.example-unit { font-size: 12px; color: var(--text-muted); }
.callout { background: var(--teal-pale); border: 1px solid var(--teal-light); border-radius: 12px; padding: 18px 20px; margin: 24px 0; display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: var(--text-secondary); line-height: 1.7; transition: background 0.25s; }
.callout svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; color: var(--teal-mid); }
.callout strong { color: var(--text-primary); }
.warn-callout { background: #FEF9EC; border: 1px solid #F5D98B; border-radius: 12px; padding: 18px 20px; margin: 24px 0; display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: #5A4200; line-height: 1.7; }
[data-theme="dark"] .warn-callout { background: #2A2000; border-color: #7A5A00; color: #F5D98B; }
.warn-callout svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; color: #B8860B; }
[data-theme="dark"] .warn-callout svg { color: #F5D98B; }
.cta-card { background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 100%); border-radius: 16px; padding: 28px 32px; margin: 36px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.cta-eyebrow { font-size: 11px; font-weight: 600; color: var(--blue-pale); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.cta-title { font-size: 20px; font-weight: 700; color: #ffffff; margin-bottom: 6px; line-height: 1.3; }
.cta-desc { font-size: 14px; color: var(--blue-light); line-height: 1.5; }
.cta-btn { background: #ffffff; color: var(--blue-mid); font-size: 14px; font-weight: 700; padding: 12px 24px; border-radius: 10px; white-space: nowrap; flex-shrink: 0; text-decoration: none; transition: background 0.15s; }
.cta-btn:hover { background: var(--blue-pale); text-decoration: none; }
.tips-list { display: flex; flex-direction: column; gap: 12px; margin: 16px 0; }
.tip-row { display: flex; align-items: flex-start; gap: 14px; background: var(--bg-stat); border-radius: 12px; padding: 14px 16px; transition: background 0.25s; margin-bottom: 7px; font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.tip-num { width: 28px; height: 28px; border-radius: 50%; background: var(--blue-mid); color: #fff; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.tip-content { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
.tip-content strong { color: var(--text-primary); }
.related-section { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.related-heading { font-size: 13px; font-weight: 600; color: var(--text-heading); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.related-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; text-decoration: none; transition: border-color 0.15s, background 0.15s; }
.related-card:hover { border-color: var(--blue-mid); background: var(--blue-pale); text-decoration: none; }
.related-card-cat { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 6px; }
.related-card-title { font-size: 14px; font-weight: 600; color: var(--text-heading); line-height: 1.4; margin-bottom: 4px; }
.related-card-desc { font-size: 12px; color: var(--text-muted); line-height: 1.5; }
.sidebar-toc { background: var(--bg-stat); border: 1px solid var(--border); border-radius: 14px; padding: 18px 20px; margin-bottom: 20px; transition: background 0.25s; }
.sidebar-toc-title { font-size: 12px; font-weight: 600; color: var(--text-heading); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 10px; }
.sidebar-toc-list { list-style: none; display: flex; flex-direction: column; gap: 5px; }
.sidebar-toc-list li a { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 7px; transition: color 0.15s; }
.sidebar-toc-list li a:hover { color: var(--blue-mid); text-decoration: none; }
.sidebar-toc-list li a::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: var(--blue-light); flex-shrink: 0; }
.sidebar-article { display: block; padding: 10px 0; border-bottom: 1px solid var(--border); text-decoration: none; transition: color 0.15s; font-size: 13px; color: var(--text-primary); line-height: 1.4; }
.sidebar-article:last-child { border-bottom: none; }
.sidebar-article-cat { font-size: 10px; font-weight: 600; color: var(--teal-mid); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 3px; }
.sidebar-article-title { font-size: 13px; color: var(--text-primary); font-weight: 500; line-height: 1.4; }
.sidebar-article:hover .sidebar-article-title { color: var(--blue-mid); }
.formula-toggle { display: flex; background: var(--bg-toggle); border-radius: 8px; padding: 3px; margin-bottom: 18px; border: 1px solid var(--border); }
.formula-btn { flex: 1; padding: 7px 6px; font-size: 11px; font-weight: 500; border: none; background: transparent; border-radius: 6px; cursor: pointer; color: var(--text-secondary); font-family: inherit; transition: all 0.15s; text-align: center; }
.formula-btn.active { background: var(--blue-mid); color: #fff; }
input[type="number"] { width: 100%; padding: 8px 10px; background: var(--bg-input); border: 1px solid var(--border-input); border-radius: 8px; font-size: 14px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; -moz-appearance: textfield; }
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"]:focus { border-color: var(--blue-mid); outline: none; }
.fitness-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.fitness-btn { padding: 9px 6px; font-size: 12px; font-weight: 500; border: 1.5px solid var(--border-input); border-radius: 9px; background: var(--bg-input); color: var(--text-secondary); cursor: pointer; text-align: center; font-family: inherit; transition: all 0.15s; line-height: 1.4; }
.fitness-btn .f-icon { font-size: 18px; display: block; margin-bottom: 3px; }
.fitness-btn.active { background: var(--blue-mid); color: #fff; border-color: var(--blue-mid); }
.fitness-btn:not(.active):hover { border-color: var(--blue-mid); color: var(--blue-mid); }
.mhr-hero { text-align: center; padding: 18px 0 16px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.mhr-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.mhr-value { font-size: 52px; font-weight: 700; line-height: 1; color: var(--z4); }
.mhr-unit { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }
.mhr-rhr { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.mhr-formula-note { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.zones-list { display: flex; flex-direction: column; gap: 8px; }
.zone-row { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); transition: border-color 0.15s; }
.zone-header { display: flex; align-items: center; gap: 10px; padding: 10px 14px; }
.zone-colour { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.zone-name { font-size: 13px; font-weight: 600; flex: 1; }
.zone-bpm { font-size: 13px; font-weight: 700; color: var(--text-heading); }
.zone-pct { font-size: 11px; color: var(--text-muted); margin-left: 6px; }
.zone-bar-track { height: 6px; background: var(--bg-stat); margin: 0 14px; border-radius: 99px; overflow: hidden; }
.zone-bar-fill { height: 100%; border-radius: 99px; transition: width 0.5s ease; }
.zone-desc { font-size: 12px; color: var(--text-secondary); padding: 8px 14px 12px; line-height: 1.5; }
.zone-fact { padding: 10px 0; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; gap: 10px; }
.zone-fact:last-child { border-bottom: none; padding-bottom: 0; }
.zone-fact-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin-top: 4px; }
.zone-fact-text { font-size: 12px; color: var(--text-secondary); line-height: 1.5; }
.zone-fact-text strong { color: var(--text-primary); }
.breadcrumb-inner a { color: var(--blue-mid); transition: color 0.15s; }
.breadcrumb-inner a:hover { color: var(--blue-dark); }
.breadcrumb-inner svg { width: 12px; height: 12px; flex-shrink: 0; }
.ad-slot-banner { height: 90px; margin: 24px 0; }
.content-section { padding: 32px 0 48px; }
.content-row { display: grid; grid-template-columns: 1fr 300px; gap: 32px; align-items: start; }
.calc-header { padding: 20px 24px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.calc-header-icon { width: 38px; height: 38px; border-radius: 9px; background: var(--icon-bg-teal); color: var(--icon-col-teal); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.calc-header-icon svg { width: 20px; height: 20px; }
.calc-header-text h2 { font-size: 16px; font-weight: 600; color: var(--text-heading); }
.calc-header-text p { font-size: 12px; color: var(--text-secondary); margin-top: 1px; }
.calc-body { display: grid; grid-template-columns: 1fr 1fr; }
.calc-inputs { padding: 22px 24px; border-right: 1px solid var(--border); }
.calc-results { padding: 22px 24px; }
.unit-toggle { display: flex; background: var(--bg-secondary); border-radius: 8px; padding: 3px; margin-bottom: 18px; border: 1px solid var(--border); }
.unit-btn { flex: 1; padding: 7px; font-size: 12px; font-weight: 500; border: none; background: transparent; border-radius: 6px; cursor: pointer; color: var(--text-secondary); font-family: inherit; transition: all 0.15s; }
.unit-btn.active { background: var(--blue-mid); color: #ffffff; font-weight: 500; }
.field-row { display: flex; gap: 8px; align-items: center; }
.field-row input { flex: 1; min-width: 0; }
.field-unit { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.opt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.opt-btn { padding: 10px 8px; font-size: 12px; line-height: 1.4; text-align: center; border: 1.5px solid var(--border); border-radius: 8px; background: var(--bg-secondary); color: var(--text-secondary); cursor: pointer; font-family: inherit; transition: all 0.15s; }
.opt-btn:hover { border-color: var(--blue-mid); color: var(--blue-mid); background: var(--blue-pale); }
.opt-btn.active { background: var(--opt-active-bg); color: var(--opt-active-text); border-color: var(--opt-active-bg); font-weight: 600; }
.opt-icon { font-size: 18px; display: block; margin-bottom: 3px; }
.sel-summary { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; margin-bottom: 4px; min-height: 28px; }
.sel-tag { display: inline-flex; align-items: center; gap: 4px; background: var(--blue-mid); color: #ffffff; padding: 3px 10px; border-radius: 99px; font-size: 11px; font-weight: 500; }
.water-hero { text-align: center; padding-bottom: 18px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.water-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.water-value { font-size: 56px; font-weight: 700; color: var(--blue-mid); line-height: 1; }
.water-unit { font-size: 14px; color: var(--text-secondary); margin-top: 2px; }
.water-alt { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.glass-row { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; margin: 14px 0 4px; }
.glass { width: 20px; height: 26px; border: 1.5px solid var(--blue-mid); border-top: none; border-radius: 0 0 4px 4px; background: var(--blue-pale); }
.glass-more { font-size: 11px; color: var(--text-muted); align-self: center; }
.glass-label { font-size: 11px; color: var(--text-secondary); text-align: center; margin-bottom: 14px; }
.breakdown-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 16px; }
.bk-card { background: var(--bg-secondary); border-radius: 9px; padding: 10px 12px; transition: background 0.25s; }
.bk-label { font-size: 11px; color: var(--text-secondary); margin-bottom: 3px; }
.bk-value { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.bk-note { font-size: 10px; color: var(--text-muted); margin-top: 2px; }
.tips-section { border-top: 1px solid var(--border); padding-top: 14px; }
.tips-title { font-size: 12px; font-weight: 600; color: var(--text-secondary); margin-bottom: 10px; }
.tip-icon { font-size: 15px; flex-shrink: 0; margin-top: 0px; }
.tdee-hero { text-align: center; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tdee-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.tdee-value { font-size: 52px; font-weight: 700; color: var(--blue-mid); line-height: 1; }
.tdee-unit { font-size: 14px; color: var(--text-secondary); margin-top: 2px; }
.goals-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 18px; }
.goal-card { border-radius: 9px; padding: 11px 12px; border: 1px solid var(--border); background: var(--bg-secondary); transition: background 0.25s; }
.goal-label { font-size: 11px; color: var(--text-secondary); margin-bottom: 3px; }
.goal-value { font-size: 15px; font-weight: 600; }
.goal-note { font-size: 10px; color: var(--text-muted); margin-top: 2px; }
.macro-section { margin-bottom: 18px; }
.macro-title { font-size: 12px; font-weight: 600; color: var(--text-secondary); margin-bottom: 10px; }
.macro-bars { display: flex; flex-direction: column; gap: 8px; }
.macro-row { display: flex; align-items: center; gap: 10px; }
.macro-bar-wrap { flex: 1; height: 8px; background: var(--bg-secondary); border-radius: 99px; overflow: hidden; }
.macro-bar { height: 100%; border-radius: 99px; transition: width 0.5s ease; }
.macro-val { font-size: 12px; font-weight: 600; color: var(--text-primary); width: 44px; text-align: right; flex-shrink: 0; }
.bmr-note { font-size: 12px; color: var(--text-secondary); background: var(--bg-secondary); border-radius: 9px; padding: 10px 12px; line-height: 1.6; transition: background 0.25s; }
.bmr-note strong { color: var(--text-primary); }
.bmi-hero { text-align: center; padding: 20px 0 18px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.bmi-label { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.bmi-value { font-size: 56px; font-weight: 700; line-height: 1; color: var(--blue-mid); transition: color 0.3s; }
.bmi-category { font-size: 16px; font-weight: 600; margin-top: 6px; transition: color 0.3s; }
.bmi-range-label { font-size: 12px; color: var(--text-muted); margin-top: 3px; }
.gauge-wrap { margin: 0 0 18px; }
.gauge-track { height: 10px; border-radius: 99px; position: relative; margin-bottom: 8px; background: linear-gradient(to right, #85B7EB 0%, #1D9E75 25%, #EF9F27 55%, #E24B4A 80%, #A32D2D 100%); }
.gauge-needle { position: absolute; top: -5px; width: 4px; height: 20px; background: var(--gauge-needle); border-radius: 2px; transform: translateX(-50%); transition: left 0.5s cubic-bezier(0.34, 1.56, 0.64, 1); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }
.gauge-labels { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
.stat { background: var(--bg-stat); border-radius: 10px; padding: 12px; transition: background 0.25s; }
.stat-label { font-size: 11px; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { font-size: 15px; font-weight: 600; color: var(--text-primary); }
.range-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.range-table td { padding: 7px 8px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.range-table tr:last-child td { border-bottom: none; }
.range-table .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; margin-right: 8px; vertical-align: middle; }
.range-table .active-row td { font-weight: 600; color: var(--text-primary); background: var(--bg-stat); border-radius: 6px; }
.prose a:hover { text-decoration: underline; }
.bmi-table-wrap { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); margin: 20px 0; }
.bmi-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.bmi-table thead tr { background: var(--table-header-bg); }
.bmi-table th { padding: 13px 16px; text-align: left; font-size: 12px; font-weight: 600; color: var(--table-header-text); letter-spacing: 0.04em; text-transform: uppercase; }
.bmi-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.bmi-table tr:last-child td { border-bottom: none; }
.bmi-table tr:nth-child(even) td { background: var(--table-alt); }
.bmi-dot { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; }
.bmi-dot::before { content: ''; display: inline-block; width: 11px; height: 11px; border-radius: 50%; flex-shrink: 0; }
.dot-under::before { background: #85B7EB; }
.dot-healthy::before { background: #1D9E75; }
.dot-over::before { background: #EF9F27; }
.dot-obese1::before { background: #E24B4A; }
.dot-obese2::before { background: #C0392B; }
.dot-obese3::before { background: #7B0000; }
.limits-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 20px 0; }
.limit-card { background: var(--bg-stat); border-radius: 12px; padding: 16px 18px; border: 1px solid var(--border); transition: background 0.25s; }
.limit-title { font-size: 14px; font-weight: 600; color: var(--text-heading); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.limit-title svg { width: 15px; height: 15px; color: var(--teal-mid); flex-shrink: 0; }
.limit-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.about-hero { background: var(--bg-hero); border-bottom: 1px solid var(--border); padding: 52px 0 48px; transition: background 0.25s; }
.hero-inner { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center; justify-content: space-between; }
.hero-eyebrow { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; display: inline-block; }
.hero-h1 { font-size: 36px; font-weight: 700; color: var(--text-heading); line-height: 1.2; margin-bottom: 16px; }
.hero-h1 em { font-style: normal; color: var(--teal-mid); }
.hero-lead { font-size: 16px; color: var(--text-secondary); max-width: 540px; line-height: 1.8; margin-bottom: 24px; }
.hero-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-pill { display: inline-flex; align-items: center; gap: 6px; background: var(--pill-bg); color: var(--pill-text); font-size: 13px; font-weight: 500; padding: 6px 14px; border-radius: 99px; border: 1px solid var(--blue-light); }
.hero-pill svg { width: 13px; height: 13px; }
.hero-logomark { width: 120px; height: 120px; background: var(--blue-mid); border-radius: 28px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.hero-logomark svg { width: 72px; height: 72px; }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border); background: var(--bg-card); transition: background 0.25s; }
.stat-cell { padding: 22px 24px; border-right: 1px solid var(--border); text-align: center; }
.stat-cell:last-child { border-right: none; }
.stat-number { font-size: 32px; font-weight: 700; line-height: 1; margin-bottom: 4px; }
.stat-number.blue { color: var(--val-blue); }
.stat-number.teal { color: var(--val-teal); }
.stat-desc { font-size: 13px; color: var(--text-muted); line-height: 1.4; }
.content-wrap { display: grid; grid-template-columns: 1fr 280px; gap: 40px; padding: 40px 0 60px; align-items: start; }
.prose-section { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 36px 40px; margin-bottom: 24px; transition: background 0.25s; }
.prose-section:last-child { margin-bottom: 0; }
.section-eyebrow { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 8px; }
.section-h2 { font-size: 22px; font-weight: 700; color: var(--text-heading); margin-bottom: 14px; line-height: 1.3; }
.prose-p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 14px; }
.prose-p:last-child { margin-bottom: 0; }
.prose-p strong { color: var(--text-primary); font-weight: 600; }
.prose-p a { color: var(--blue-mid); }
.principles-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.principle-card { background: var(--bg-stat); border-radius: 12px; padding: 18px 20px; display: flex; gap: 14px; align-items: flex-start; transition: background 0.25s; }
.principle-icon { width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.principle-icon svg { width: 18px; height: 18px; }
.principle-icon.blue { background: var(--blue-pale); color: var(--blue-mid); }
.principle-icon.teal { background: var(--teal-pale); color: var(--teal-mid); }
.principle-title { font-size: 14px; font-weight: 600; color: var(--text-heading); margin-bottom: 4px; }
.principle-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; }
.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 20px; }
.tool-row { display: flex; align-items: center; gap: 12px; background: var(--bg-stat); border-radius: 10px; padding: 12px 14px; text-decoration: none; transition: background 0.15s, border-color 0.15s; border: 1px solid transparent; }
.tool-row:hover { background: var(--blue-pale); border-color: var(--blue-light); text-decoration: none; }
.tool-row-icon { width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.tool-row-icon svg { width: 15px; height: 15px; }
.tool-row-icon.blue { background: var(--blue-pale); color: var(--blue-mid); }
.tool-row-icon.teal { background: var(--teal-pale); color: var(--teal-mid); }
.tool-row-name { font-size: 13px; font-weight: 500; color: var(--text-heading); }
.tool-row-tag { font-size: 11px; color: var(--text-muted); margin-top: 1px; }
.formula-list { margin-top: 16px; display: flex; flex-direction: column; gap: 10px; }
.formula-row { display: flex; align-items: center; gap: 14px; background: var(--bg-stat); border-radius: 10px; padding: 12px 16px; transition: background 0.25s; }
.formula-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.formula-name { font-size: 13px; font-weight: 600; color: var(--text-primary); min-width: 140px; }
.formula-desc { font-size: 13px; color: var(--text-secondary); }
.sidebar-link { display: block; font-size: 13px; color: var(--text-secondary); padding: 8px 0; border-bottom: 1px solid var(--border); text-decoration: none; transition: color 0.15s; }
.sidebar-link:last-child { border-bottom: none; }
.sidebar-link:hover { color: var(--blue-mid); }
.sidebar-cta { background: var(--blue-mid); border-radius: 14px; padding: 22px 20px; margin-bottom: 20px; text-align: center; }
.sidebar-cta-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.sidebar-cta-desc { font-size: 13px; color: var(--blue-pale); line-height: 1.5; margin-bottom: 16px; }
.sidebar-cta-btn { display: inline-block; background: #fff; color: var(--blue-mid); font-size: 13px; font-weight: 700; padding: 9px 20px; border-radius: 8px; text-decoration: none; transition: background 0.15s; }
.sidebar-cta-btn:hover { background: var(--blue-pale); text-decoration: none; }
.contact-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; transition: background 0.25s; }
.info-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--border); }
.info-item { padding: 20px 22px; display: flex; align-items: flex-start; gap: 14px; }
.info-item + .info-item { border-left: 1px solid var(--border); }
.info-icon { width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.info-icon svg { width: 18px; height: 18px; }
.info-icon.blue { background: var(--blue-pale); color: var(--blue-mid); }
.info-icon.teal { background: var(--teal-pale); color: var(--teal-mid); }
.info-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 3px; }
.info-value { font-size: 13px; color: var(--text-primary); font-weight: 500; }
.form-body { padding: 32px 36px; }
.form-title { font-size: 17px; font-weight: 700; color: var(--text-heading); margin-bottom: 6px; }
.form-sub { font-size: 14px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.6; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field.full { grid-column: 1 / -1; }
.field input { padding: 10px 14px; background: var(--bg-input); border: 1.5px solid var(--border-input); border-radius: 10px; font-size: 14px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; }
.field select { padding: 10px 14px; background: var(--bg-input); border: 1.5px solid var(--border-input); border-radius: 10px; font-size: 14px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; cursor: pointer; }
.field textarea { padding: 10px 14px; background: var(--bg-input); border: 1.5px solid var(--border-input); border-radius: 10px; font-size: 14px; color: var(--text-primary); font-family: inherit; outline: none; transition: border-color 0.15s, background 0.25s; resize: vertical; min-height: 130px; line-height: 1.6; }
.field input:focus { border-color: var(--blue-mid); }
.field select:focus { border-color: var(--blue-mid); }
.field textarea:focus { border-color: var(--blue-mid); }
.field .hint { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.checkbox-row { display: flex; align-items: flex-start; gap: 10px; margin-top: 4px; }
.checkbox-row input[type="checkbox"] { margin-top: 3px; flex-shrink: 0; accent-color: var(--blue-mid); width: 16px; height: 16px; cursor: pointer; }
.checkbox-row label { font-size: 13px; color: var(--text-secondary); line-height: 1.5; cursor: pointer; }
.checkbox-row a { color: var(--blue-mid); }
.submit-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; flex-wrap: wrap; }
.submit-note { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.submit-note svg { width: 14px; height: 14px; color: var(--teal-mid); flex-shrink: 0; }
.submit-btn { padding: 12px 32px; background: var(--blue-mid); color: #fff; border: none; border-radius: 10px; font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit; letter-spacing: 0.01em; transition: background 0.15s, transform 0.1s; display: flex; align-items: center; gap: 8px; }
.submit-btn:hover { background: var(--blue-dark); }
.submit-btn:active { transform: scale(0.99); }
.submit-btn svg { width: 16px; height: 16px; }
.success-panel { display: none; padding: 48px 36px; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 16px; }
.success-icon { width: 60px; height: 60px; background: var(--teal-pale); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.success-icon svg { width: 28px; height: 28px; color: var(--teal-mid); }
.success-title { font-size: 20px; font-weight: 700; color: var(--text-heading); }
.success-msg { font-size: 15px; color: var(--text-secondary); max-width: 340px; line-height: 1.7; }
.success-back { margin-top: 8px; padding: 10px 24px; background: var(--blue-mid); color: #fff; border: none; border-radius: 9px; font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit; transition: background 0.15s; text-decoration: none; display: inline-block; }
.success-back:hover { background: var(--blue-dark); text-decoration: none; }
.medical-notice { margin-top: 20px; background: var(--bg-stat); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; display: flex; gap: 12px; align-items: flex-start; font-size: 13px; color: var(--text-secondary); line-height: 1.6; transition: background 0.25s; }
.medical-notice svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; color: var(--blue-mid); }
.faq-item { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq-item:first-child { padding-top: 0; }
.faq-item:last-child { border-bottom: none; padding-bottom: 0; }
.faq-q { font-size: 13px; font-weight: 600; color: var(--text-heading); margin-bottom: 5px; }
.faq-a { font-size: 12px; color: var(--text-secondary); line-height: 1.6; }
img { max-width: 100%; display: block; }
.section { padding: 48px 0; }
.hero { background: var(--bg-hero); border-bottom: 1px solid var(--border-hero); padding: 52px 0 44px; transition: background 0.25s; }
.hero-text { max-width: 560px; }
.hero-title { font-size: 38px; font-weight: 700; color: var(--text-heading); line-height: 1.2; margin-bottom: 16px; }
.hero-title span { color: var(--teal-mid); }
.hero-desc { font-size: 16px; color: var(--text-secondary); margin-bottom: 28px; line-height: 1.7; }
.hero-search { display: flex; align-items: center; background: var(--search-bg); border: 1px solid var(--search-border); border-radius: 10px; padding: 10px 16px; gap: 10px; max-width: 420px; transition: background 0.25s, border-color 0.25s; }
.hero-search svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }
.hero-search input { border: none; outline: none; font-size: 14px; color: var(--text-primary); background: transparent; width: 100%; font-family: inherit; }
.hero-search input::placeholder { color: var(--text-muted); }
.hero-stats { display: flex; gap: 28px; margin-top: 28px; }
.hero-stat-value { font-size: 22px; font-weight: 700; color: var(--text-heading); }
.hero-stat-label { font-size: 12px; color: var(--text-muted); }
.cat-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.cat-pill { padding: 6px 16px; border-radius: 99px; border: 1px solid var(--border); font-size: 13px; color: var(--text-secondary); cursor: pointer; background: var(--bg-card); transition: all 0.15s; }
.cat-pill:hover { background: var(--blue-mid); color: #ffffff; border-color: var(--blue-mid); }
.cat-pill.active { background: var(--blue-mid); color: #ffffff; border-color: var(--blue-mid); }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.section-title { font-size: 20px; font-weight: 600; color: var(--text-heading); display: flex; align-items: center; gap: 8px; }
.section-title svg { width: 20px; height: 20px; color: var(--blue-mid); }
.see-all { font-size: 13px; color: var(--blue-mid); display: flex; align-items: center; gap: 4px; transition: color 0.15s; }
.see-all:hover { color: var(--text-heading); }
.tool-card { background: var(--bg-page); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; text-decoration: none; transition: border-color 0.15s, background 0.15s; display: block; }
.tool-card:hover { border-color: var(--blue-mid); background: var(--blue-pale); text-decoration: none; transform: translateY(-2px); }
.tool-icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.tool-icon svg { width: 22px; height: 22px; }
.tool-icon.blue { background: var(--icon-bg-blue); color: var(--icon-col-blue); }
.tool-icon.teal { background: var(--icon-bg-teal); color: var(--icon-col-teal); }
.tool-name { font-size: 15px; font-weight: 600; color: var(--text-heading); margin-bottom: 6px; }
.tool-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; }
.tool-badge { display: inline-block; font-size: 11px; padding: 3px 10px; border-radius: 99px; background: var(--icon-bg-teal); color: var(--teal-dark); font-weight: 500; }
.tool-link { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: var(--blue-mid); font-weight: 500; margin-top: 4px; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.blog-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; transition: border-color 0.15s, transform 0.15s, background 0.25s; display: block; }
.blog-card:hover { border-color: var(--blue-bright); transform: translateY(-2px); }
.blog-img { height: 90px; display: flex; align-items: center; justify-content: center; }
.blog-img svg { width: 32px; height: 32px; }
.blog-img.blue { background: var(--icon-bg-blue); color: var(--icon-col-blue); }
.blog-img.teal { background: var(--icon-bg-teal); color: var(--icon-col-teal); }
.blog-img.mid { background: var(--blue-pale); color: var(--blue-mid); }
.blog-body { padding: 14px; }
.blog-tag { font-size: 11px; font-weight: 600; color: var(--blue-mid); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 5px; }
.blog-title { font-size: 13px; font-weight: 600; color: var(--text-primary); line-height: 1.4; margin-bottom: 8px; }
.blog-meta { font-size: 11px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.blog-meta svg { width: 12px; height: 12px; }
.article-section { padding: 40px 0 60px; }
.article-row { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; }
.article-header { margin-bottom: 32px; }
.article-tag { display: inline-block; font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; }
.article-header h1 { font-size: 32px; font-weight: 700; color: var(--text-heading); line-height: 1.25; margin-bottom: 14px; }
.article-meta svg { width: 14px; height: 14px; vertical-align: -2px; }
.article-meta-item { display: flex; align-items: center; gap: 5px; }
.article-body h2 { font-size: 22px; font-weight: 700; color: var(--text-heading); margin: 36px 0 14px; line-height: 1.3; }
.article-body h3 { font-size: 17px; font-weight: 600; color: var(--text-heading); margin: 28px 0 10px; }
.article-body p { margin-bottom: 18px; }
.article-body ul { margin: 0 0 18px 20px; }
.article-body ol { margin: 0 0 18px 20px; }
.article-body li { margin-bottom: 8px; }
.article-body strong { font-weight: 600; color: var(--text-primary); }
.article-body a { color: var(--blue-mid); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--blue-dark); }
.fact-box { background: var(--bg-formula); border-radius: 12px; padding: 22px 26px; margin: 24px 0; display: flex; gap: 16px; align-items: flex-start; }
.fact-box-icon { font-size: 28px; flex-shrink: 0; margin-top: 2px; }
.fact-box-label { font-size: 11px; font-weight: 600; color: var(--teal-light); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.fact-box-text { font-size: 15px; color: var(--text-formula); line-height: 1.6; font-weight: 500; }
.highlight-box { background: var(--blue-pale); border: 1px solid var(--blue-light); border-radius: 12px; padding: 16px 20px; margin-bottom: 14px; font-size: 14px; color: var(--text-heading); line-height: 1.7; border-left: 4px solid var(--blue-mid); margin: 24px 0; }
.highlight-box strong { color: var(--blue-dark); }
[data-theme="dark"] .highlight-box strong { color: var(--blue-dark); }
.data-table tr:hover td { background: var(--bg-secondary); }
.cta-box { background: var(--blue-mid); border-radius: 14px; padding: 28px; margin: 36px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.cta-box-text h3 { font-size: 18px; font-weight: 700; color: #ffffff; margin-bottom: 6px; }
.cta-box-text p { font-size: 14px; color: var(--blue-pale); line-height: 1.5; }
.cta-box-btn { background: #ffffff; color: var(--blue-mid); font-size: 14px; font-weight: 600; padding: 10px 22px; border-radius: 8px; white-space: nowrap; transition: opacity 0.15s; flex-shrink: 0; }
.cta-box-btn:hover { opacity: 0.9; }
.sidebar-article:hover { color: var(--blue-mid); }
.sidebar-article-tag { font-size: 10px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 3px; }
.nav-links a.active { color: var(--blue-mid); }
.filter-bar { padding: 28px 0 0; }
.filter-label { font-size: 12px; font-weight: 600; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px; }
.filter-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-pill { padding: 7px 16px; border-radius: 99px; font-size: 13px; font-weight: 500; border: 1.5px solid var(--border); background: var(--pill-bg); color: var(--pill-text); cursor: pointer; font-family: inherit; transition: all 0.15s; }
.filter-pill:hover { border-color: var(--blue-mid); color: var(--blue-mid); }
.filter-pill.active { background: var(--pill-active); color: var(--pill-text-active); border-color: var(--pill-active); }
.articles-section { padding: 32px 0 60px; }
.articles-count { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.articles-count span { font-weight: 600; color: var(--text-primary); }
.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.article-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; display: flex; flex-direction: column; transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s, background 0.25s; }
.article-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); transform: translateY(-2px); border-color: var(--blue-light); }
[data-theme="dark"] .article-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.3); }
.article-card-img { height: 120px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.article-card-img.blue { background: var(--icon-bg-blue); }
.article-card-img.teal { background: var(--icon-bg-teal); }
.article-card-img.mid { background: var(--teal-pale); }
.article-card-img svg { width: 44px; height: 44px; }
.article-card-img.blue svg { color: var(--icon-col-blue); }
.article-card-img.teal svg { color: var(--icon-col-teal); }
.article-card-img.mid svg { color: var(--teal-mid); }
.article-card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.article-card-tag { font-size: 11px; font-weight: 600; color: var(--teal-mid); letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 8px; }
.article-card-title { font-size: 15px; font-weight: 600; color: var(--text-heading); line-height: 1.4; margin-bottom: 8px; flex: 1; }
.article-card-excerpt { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; }
.article-card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; }
.article-card-meta { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-muted); }
.article-card-meta svg { width: 13px; height: 13px; }
.article-card-link { font-size: 13px; font-weight: 600; color: var(--blue-mid); transition: color 0.15s; }
.article-card:hover .article-card-link { color: var(--blue-dark); }
.no-results { display: none; text-align: center; padding: 60px 20px; color: var(--text-muted); }
.no-results svg { width: 40px; height: 40px; color: var(--border); margin: 0 auto 12px; }
.no-results p { font-size: 15px; }
.suggest-cta { margin-top: 48px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; transition: background 0.25s; }
.suggest-cta-text h3 { font-size: 18px; font-weight: 700; color: var(--text-heading); margin-bottom: 6px; }
.suggest-cta-text p { font-size: 14px; color: var(--text-secondary); }
.suggest-cta-btn { background: var(--blue-mid); color: #ffffff; font-size: 14px; font-weight: 600; padding: 10px 22px; border-radius: 8px; white-space: nowrap; transition: background 0.15s; flex-shrink: 0; }
.suggest-cta-btn:hover { background: var(--blue-dark); }
.tools-strip { border-top: 1px solid var(--border); margin-top: 52px; padding-top: 40px; }
.tools-strip-title { font-size: 18px; font-weight: 700; color: var(--text-heading); margin-bottom: 16px; }
.tools-pills { display: flex; gap: 10px; flex-wrap: wrap; }
.tool-pill { display: inline-flex; align-items: center; gap: 8px; padding: 9px 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-card); font-size: 13px; color: var(--text-primary); transition: border-color 0.15s, background 0.15s; }
.tool-pill:hover { border-color: var(--blue-mid); background: var(--blue-pale); color: var(--blue-mid); }
.tool-pill svg { width: 15px; height: 15px; }
.tool-pill.blue svg { color: var(--icon-col-blue); }
.tool-pill.teal svg { color: var(--icon-col-teal); }
.page-header-meta { font-size: 13px; color: var(--text-muted); }
.prose { background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px; padding: 36px 40px; transition: background 0.25s; }
.prose ul li { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 6px; }
.warn-box { background: var(--amber-pale); border: 1px solid var(--amber-border); border-radius: 12px; padding: 18px 20px; margin-bottom: 20px; display: flex; gap: 14px; align-items: flex-start; }
.warn-box svg { width: 22px; height: 22px; flex-shrink: 0; margin-top: 1px; color: var(--amber-text); }
.warn-box-text { font-size: 14px; color: var(--amber-text); line-height: 1.7; }
.warn-box-text strong { font-weight: 700; }
.tool-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0 20px; }
.tool-card-icon { font-size: 22px; margin-bottom: 6px; }
.tool-card-name { font-size: 13px; font-weight: 600; color: var(--text-heading); }
.tool-card-desc { font-size: 12px; color: var(--text-muted); margin-top: 2px; line-height: 1.4; }

@media (max-width: 900px) {
  .main-grid { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .why-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .cta-card { flex-direction: column; }
  .example-grid { grid-template-columns: 1fr 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .content-row { grid-template-columns: 1fr; }
  .calc-body { grid-template-columns: 1fr; }
  .calc-inputs { border-right: none; border-bottom: 1px solid var(--border); }
  .limits-grid { grid-template-columns: 1fr; }
  .content-wrap { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stats-row .stat-cell:nth-child(2) { border-right: none; }
  .stats-row .stat-cell:nth-child(3) { border-top: 1px solid var(--border); }
  .stats-row .stat-cell:nth-child(4) { border-top: 1px solid var(--border); }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 28px; }
  .hero-inner { flex-direction: column; }
  .article-row { grid-template-columns: 1fr; }
  .article-header h1 { font-size: 26px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-cards { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .calc-grid { grid-template-columns: 1fr; }
  .calc-panel + .calc-panel { border-left: none; border-top: 1px solid var(--border); }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-logomark { display: none; }
  .principles-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .info-strip { grid-template-columns: 1fr; }
  .info-item + .info-item { border-left: none; border-top: 1px solid var(--border); }
  .form-grid { grid-template-columns: 1fr; }
  .form-body { padding: 24px 20px; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-mobile-toggle { display: block; }
  .page-header h1 { font-size: 24px; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .custom-row { grid-template-columns: 1fr 70px; }
  .custom-row .custom-label { grid-column: 1 / -1; }
  .guide { padding: 22px 20px; }
  .guide h2 { font-size: 18px; }
  .article-hero h1 { font-size: 26px; }
  .prose h2 { font-size: 20px; }
  .example-grid { grid-template-columns: 1fr; }
  .goals-grid { grid-template-columns: 1fr; }
  .hero-h1 { font-size: 26px; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .prose-section { padding: 24px 20px; }
  .submit-row { flex-direction: column; align-items: flex-start; }
  .tools-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .cta-box { flex-direction: column; }
  .data-table { font-size: 13px; }
  .articles-grid { grid-template-columns: 1fr; }
  .suggest-cta { flex-direction: column; }
  .prose { padding: 24px 20px; }
  .tool-cards { grid-template-columns: 1fr; }
}