/* ============================================================
   HRVDesk — Main Design System
   Scientific dark editorial. Data-first.
   Updated: March 2026
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=Barlow:wght@300;400;500;600;700&family=Barlow+Condensed:wght@400;500;600;700&display=swap');

:root {
  --bg-0: #07090e;
  --bg-1: #0c1018;
  --bg-2: #111722;
  --bg-3: #171f2e;
  --bg-4: #1f293d;
  --bg-card: #131a28;
  --bg-card-hover: #1a2336;
  --text-primary:   #e2ddd4;
  --text-secondary: #9a9488;
  --text-muted:     #5a5650;
  --text-bright:    #f0ece4;
  --whoop:        #e05a3a;
  --whoop-mid:    #c04e32;
  --whoop-pale:   #f5b4a4;
  --whoop-bg:     rgba(224, 90, 58, 0.08);
  --whoop-border: rgba(224, 90, 58, 0.25);
  --oura:        #c4a060;
  --oura-mid:    #a8883a;
  --oura-pale:   #e8d4a8;
  --oura-bg:     rgba(196, 160, 96, 0.08);
  --oura-border: rgba(196, 160, 96, 0.25);
  --accent:   #4a6fa5;
  --success:  #3d8a5e;
  --warn:     #b07030;
  --border:        rgba(255,255,255,0.07);
  --border-strong: rgba(255,255,255,0.14);
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-ui:      'Barlow', sans-serif;
  --font-data:    'Barlow Condensed', sans-serif;
  --max-w:      1160px;
  --max-w-text: 740px;
  --radius:     6px;
  --radius-lg:  12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { background-color: var(--bg-0); color: var(--text-primary); font-family: var(--font-body); font-size: 1rem; line-height: 1.75; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--oura); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--oura-pale); text-decoration: underline; }

/* Compliance Ribbon */
.compliance-ribbon { width: 100%; background: rgba(255,255,255,0.04); border-bottom: 1px solid var(--border); text-align: center; padding: 0.55rem 1.5rem; font-family: var(--font-ui); font-size: 0.7rem; line-height: 1.4; color: var(--text-secondary); letter-spacing: 0.01em; }
.compliance-ribbon strong { color: var(--text-primary); }

/* Navigation */
.site-nav { position: sticky; top: 0; z-index: 100; background: rgba(7,9,14,0.85); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav-logo { font-family: var(--font-data); font-size: 1.3rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-bright); text-decoration: none; }
.nav-logo span { color: var(--oura); }
.nav-logo:hover { text-decoration: none; color: var(--text-bright); }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { font-family: var(--font-ui); font-size: 0.8rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-secondary); text-decoration: none; transition: color 0.2s; }
.nav-links a:hover { color: var(--text-primary); text-decoration: none; }
.nav-cta { font-family: var(--font-ui); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #000 !important; background: var(--oura); padding: 0.5rem 1.1rem; border-radius: var(--radius); text-decoration: none !important; transition: background 0.2s; }
.nav-cta:hover { background: var(--oura-pale); text-decoration: none !important; }

/* Hero */
.page-hero { background: var(--bg-1); position: relative; overflow: hidden; padding: 5rem 2rem 4rem; text-align: center; }
.page-hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 80% at 20% 50%, rgba(224,90,58,0.05) 0%, transparent 70%), radial-gradient(ellipse 60% 80% at 80% 50%, rgba(196,160,96,0.05) 0%, transparent 70%); pointer-events: none; }
.hero-inner { position: relative; z-index: 1; max-width: var(--max-w-text); margin: 0 auto; }
.eyebrow { display: block; font-family: var(--font-data); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--oura); margin-bottom: 1.2rem; }
.page-hero h1 { font-family: var(--font-display); font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 700; line-height: 1.15; color: var(--text-bright); margin-bottom: 1.4rem; }
.page-hero h1 em { font-style: italic; color: var(--oura); }
.hero-deck { font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; max-width: 620px; margin: 0 auto 1.8rem; }
.hero-meta-row { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.meta-chip { font-family: var(--font-data); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); border: 1px solid var(--border); padding: 0.3rem 0.75rem; border-radius: 20px; }
.vs-display { display: flex; align-items: center; justify-content: center; gap: 1.2rem; margin: 1.8rem 0; font-family: var(--font-data); font-size: 0.85rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.whoop-pill { background: var(--whoop-bg); border: 1px solid var(--whoop-border); color: var(--whoop); padding: 0.4rem 1rem; border-radius: 20px; }
.oura-pill  { background: var(--oura-bg);  border: 1px solid var(--oura-border);  color: var(--oura);  padding: 0.4rem 1rem; border-radius: 20px; }
.vs-text { color: var(--text-muted); font-size: 0.7rem; }

/* Breadcrumb */
.breadcrumb { max-width: var(--max-w); margin: 0 auto; padding: 1rem 2rem 0; font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-muted); }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--oura); }
.breadcrumb span { color: var(--text-secondary); }

/* Layout */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.content-wrap { max-width: var(--max-w); margin: 0 auto; padding: 4rem 2rem; }
.two-col { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; align-items: start; }
.main-col { min-width: 0; }
.sidebar { position: sticky; top: 80px; }

/* Typography */
h1,h2,h3,h4,h5,h6 { font-family: var(--font-display); color: var(--text-bright); line-height: 1.25; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-top: 3.5rem; margin-bottom: 0.8rem; padding-top: 1rem; border-top: 1px solid var(--border); }
h2:first-child, h2.no-border { border-top: none; margin-top: 0; }
h3 { font-size: clamp(1.2rem, 2vw, 1.55rem); font-weight: 600; margin-top: 2.5rem; margin-bottom: 0.7rem; }
h4 { font-family: var(--font-ui); font-size: 0.9rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 0.5rem; }

/* Drop Caps */
.main-col p:first-of-type::first-letter,
.main-col h2 + .dab + p::first-letter { font-family: var(--font-display); font-size: 3.5rem; font-weight: 700; float: left; line-height: 0.85; margin-right: 0.1em; margin-top: 0.1em; color: var(--oura); }
.dab + p::first-letter, h3 + p::first-letter { all: unset; }

/* DABs */
.dab { background: var(--bg-card); border-left: 3px solid var(--oura); border-radius: var(--radius); padding: 1.2rem 1.4rem; margin-bottom: 1.5rem; }
.dab-label { display: block; font-family: var(--font-data); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--oura); margin-bottom: 0.55rem; }
.dab p { font-size: 0.95rem; line-height: 1.65; color: var(--text-primary); margin: 0; }
.dab p strong { color: var(--text-bright); }
.dab p::first-letter { all: unset; }

/* Body Copy */
.main-col p { margin-bottom: 1.3rem; font-size: 1rem; color: var(--text-primary); }
.main-col p:last-child { margin-bottom: 0; }

/* Info / Warn Boxes */
.info-box { background: var(--bg-card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); padding: 1.4rem 1.6rem; margin: 2rem 0; }
.info-box strong { font-family: var(--font-data); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--oura); display: block; margin-bottom: 0.6rem; }
.info-box p { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }
.warn-box { background: rgba(176,112,48,0.08); border: 1px solid rgba(176,112,48,0.25); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.5rem 0; }
.warn-box strong { color: var(--warn); font-family: var(--font-data); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; display: block; margin-bottom: 0.4rem; }
.warn-box p { font-size: 0.875rem; color: var(--text-secondary); margin: 0; }

/* Spec Table */
.table-wrap { overflow-x: auto; margin: 2rem 0; border-radius: var(--radius-lg); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-family: var(--font-ui); font-size: 0.875rem; }
thead th { padding: 0.9rem 1.2rem; text-align: left; background: var(--bg-card); font-family: var(--font-data); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; }
thead th:first-child { color: var(--text-secondary); }
thead th.col-whoop { color: var(--whoop); border-bottom: 2px solid var(--whoop); }
thead th.col-oura  { color: var(--oura);  border-bottom: 2px solid var(--oura); }
tbody tr { border-top: 1px solid var(--border); transition: background 0.15s; }
tbody tr:hover { background: var(--bg-card); }
tbody td { padding: 0.8rem 1.2rem; color: var(--text-secondary); line-height: 1.4; }
tbody td:first-child { color: var(--text-primary); font-weight: 500; }
tbody td.col-whoop { color: var(--whoop-pale); }
tbody td.col-oura  { color: var(--oura-pale); }
td.check { color: var(--success); font-size: 1.1rem; }
td.cross  { color: var(--whoop);   font-size: 1.1rem; }

/* Score Bars */
.score-rows { margin: 2rem 0; display: flex; flex-direction: column; gap: 0.8rem; }
.score-row { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.2rem; }
.score-row-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.6rem; }
.score-cat { font-family: var(--font-ui); font-size: 0.8rem; font-weight: 600; color: var(--text-primary); letter-spacing: 0.03em; }
.winner-chip { font-family: var(--font-data); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; padding: 0.2rem 0.6rem; border-radius: 10px; }
.winner-chip.w   { background: var(--whoop-bg); color: var(--whoop); border: 1px solid var(--whoop-border); }
.winner-chip.o   { background: var(--oura-bg);  color: var(--oura);  border: 1px solid var(--oura-border); }
.winner-chip.tie { background: rgba(255,255,255,0.05); color: var(--text-secondary); border: 1px solid var(--border); }
.score-bars { display: flex; flex-direction: column; gap: 0.4rem; }
.score-bar-row { display: flex; align-items: center; gap: 0.75rem; }
.score-bar-label { font-family: var(--font-data); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; width: 60px; flex-shrink: 0; color: var(--text-secondary); }
.score-bar-track { flex: 1; height: 6px; background: rgba(255,255,255,0.06); border-radius: 3px; overflow: hidden; }
.score-bar-fill { height: 100%; border-radius: 3px; width: 0; transition: width 0.9s cubic-bezier(0.25,0.46,0.45,0.94); }
.score-bar-fill.whoop { background: var(--whoop); }
.score-bar-fill.oura  { background: var(--oura); }
.score-bar-val { font-family: var(--font-data); font-size: 0.7rem; font-weight: 600; width: 26px; text-align: right; color: var(--text-secondary); }

/* FAQ */
.faq-list { margin: 1.5rem 0; }
.faq-item { border-top: 1px solid var(--border); }
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-q { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.1rem 0; cursor: pointer; font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; color: var(--text-bright); user-select: none; }
.faq-q::after { content: '+'; font-family: var(--font-ui); font-size: 1.4rem; font-weight: 300; color: var(--oura); flex-shrink: 0; margin-top: -0.1rem; transition: transform 0.2s; }
.faq-item.open .faq-q::after { content: '−'; }
.faq-a { display: none; padding: 0 0 1.2rem; font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }
.faq-item.open .faq-a { display: block; }

/* Buttons */
.btn { display: inline-block; font-family: var(--font-ui); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.65rem 1.4rem; border-radius: var(--radius); text-decoration: none; transition: opacity 0.2s, transform 0.15s; cursor: pointer; border: none; }
.btn:hover { opacity: 0.88; transform: translateY(-1px); text-decoration: none; }
.btn-oura  { background: var(--oura);  color: #000 !important; }
.btn-whoop { background: var(--whoop); color: #fff !important; }
.btn-outline { background: transparent; border: 1px solid var(--border-strong); color: var(--text-secondary) !important; }
.btn-outline:hover { border-color: var(--oura); color: var(--oura) !important; }
.cta-disclaimer { font-family: var(--font-ui); font-size: 0.68rem; color: var(--text-muted); margin-top: 0.5rem !important; line-height: 1.4; }

/* Device Cards */
.device-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 2.5rem 0; }
.device-card { background: var(--bg-card); border-radius: var(--radius-lg); padding: 1.8rem; border: 1px solid var(--border); transition: border-color 0.2s; }
.device-card.whoop-card { border-top: 3px solid var(--whoop); }
.device-card.oura-card  { border-top: 3px solid var(--oura); }
.device-card-label { font-family: var(--font-data); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; margin-bottom: 0.3rem; }
.device-card.whoop-card .device-card-label { color: var(--whoop); }
.device-card.oura-card  .device-card-label { color: var(--oura); }
.device-card-name { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--text-bright); margin-bottom: 0.3rem; }
.device-card-subtitle { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 1.2rem; font-family: var(--font-ui); }
.device-price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin-bottom: 1.4rem; }
.price-label { font-family: var(--font-data); font-size: 0.6rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); display: block; margin-bottom: 0.15rem; }
.price-value { font-family: var(--font-data); font-size: 1rem; font-weight: 700; color: var(--text-bright); }
.price-value.tco-whoop { color: var(--whoop); }
.price-value.tco-oura  { color: var(--oura); }

/* Feature Grid */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; margin: 3rem 0; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.6rem; text-decoration: none; transition: background 0.2s, border-color 0.2s, transform 0.15s; }
.feature-card:hover { background: var(--bg-card-hover); border-color: var(--border-strong); transform: translateY(-2px); text-decoration: none; }
.feature-icon { font-size: 1.6rem; margin-bottom: 0.8rem; display: block; }
.feature-card-title { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; color: var(--text-bright); margin-bottom: 0.4rem; display: block; }
.feature-card-desc { font-family: var(--font-ui); font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }

/* Profile Cards */
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin: 2rem 0; }
.profile-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.4rem; }
.profile-card-title { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; color: var(--text-bright); margin-bottom: 0.6rem; }
.profile-card p { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 0.8rem !important; }
.profile-verdict { font-family: var(--font-data); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.25rem 0.65rem; border-radius: 10px; display: inline-block; }
.profile-verdict.whoop-v { background: var(--whoop-bg); color: var(--whoop); border: 1px solid var(--whoop-border); }
.profile-verdict.oura-v  { background: var(--oura-bg);  color: var(--oura);  border: 1px solid var(--oura-border); }

/* Purchase CTA Block */
.purchase-cta-block { border: 1px solid var(--oura-border); background: var(--oura-bg); border-radius: var(--radius-lg); padding: 2.4rem; text-align: center; margin: 3rem 0; }
.purchase-cta-block h3 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 600; color: var(--text-bright); margin-bottom: 0.5rem; margin-top: 0; }
.purchase-cta-block p { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 1.4rem; }
.purchase-cta-buttons { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.8rem; }

/* Sidebar */
.sidebar-module { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.4rem; margin-bottom: 1.5rem; }
.sidebar-module-title { font-family: var(--font-data); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--oura); margin-bottom: 1rem; display: block; }
.toc-list { list-style: none; display: flex; flex-direction: column; gap: 0.3rem; }
.toc-link { font-family: var(--font-ui); font-size: 0.775rem; color: var(--text-secondary); text-decoration: none; line-height: 1.4; display: block; padding: 0.25rem 0 0.25rem 0.6rem; border-left: 2px solid transparent; transition: color 0.2s, border-color 0.2s; }
.toc-link:hover, .toc-link.active { color: var(--oura); border-left-color: var(--oura); text-decoration: none; }
.sidebar-cta-buttons { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 0.6rem; }
.sidebar-cta-buttons .btn { text-align: center; }
.key-figures { display: flex; flex-direction: column; gap: 0.7rem; }
.key-figure-item { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: 0.6rem; border-bottom: 1px solid var(--border); }
.key-figure-item:last-child { border-bottom: none; padding-bottom: 0; }
.kf-label { font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-muted); }
.kf-value { font-family: var(--font-data); font-size: 0.9rem; font-weight: 700; color: var(--text-bright); }
.kf-value.oura-val  { color: var(--oura); }
.kf-value.whoop-val { color: var(--whoop); }
.sources-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.sources-list a { font-family: var(--font-ui); font-size: 0.75rem; color: var(--accent); display: block; line-height: 1.35; }
.sources-list a:hover { color: var(--oura); }

/* Ranking Cards */
.ranking-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2rem; margin-bottom: 2rem; }
.ranking-card.top-pick { border-color: var(--oura-border); border-top: 3px solid var(--oura); }
.rank-badge { font-family: var(--font-data); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.3rem; }
.top-pick-badge { display: inline-flex; align-items: center; gap: 0.4rem; background: var(--oura-bg); border: 1px solid var(--oura-border); color: var(--oura); font-family: var(--font-data); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.2rem 0.6rem; border-radius: 10px; margin-bottom: 0.6rem; }
.ranking-card-name { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; color: var(--text-bright); margin-bottom: 0.4rem; }
.ranking-card-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.2rem; }
.tag { font-family: var(--font-data); font-size: 0.62rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.2rem 0.55rem; border-radius: 10px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text-muted); }
.pricing-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 0.8rem; background: var(--bg-2); border-radius: var(--radius); padding: 1rem; margin-bottom: 1.2rem; }
.pricing-label { font-family: var(--font-data); font-size: 0.58rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); display: block; margin-bottom: 0.2rem; }
.pricing-value { font-family: var(--font-data); font-size: 0.9rem; font-weight: 700; color: var(--text-bright); }
.pricing-value.green   { color: var(--success); }
.pricing-value.warn-v  { color: var(--warn); }
.pricing-value.oura-v  { color: var(--oura); }
.pricing-value.whoop-v { color: var(--whoop); }
.ranking-summary { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.65; margin-bottom: 1.2rem; }
.ranking-note { font-family: var(--font-ui); font-size: 0.72rem; color: var(--text-muted); background: var(--bg-3); border-radius: var(--radius); padding: 0.6rem 0.9rem; margin-bottom: 1rem; line-height: 1.5; }

/* Tier Grid */
.tier-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin: 1.5rem 0; }
.tier-card { background: var(--bg-card); border-radius: var(--radius); padding: 1.2rem; }
.tier-card.tier-1 { border: 1px solid var(--oura-border); }
.tier-card.tier-2 { border: 1px solid rgba(74,111,165,0.35); }
.tier-card.tier-3 { border: 1px solid var(--border); }
.tier-label { font-family: var(--font-data); font-size: 0.6rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.4rem; display: block; }
.tier-card.tier-1 .tier-label { color: var(--oura); }
.tier-card.tier-2 .tier-label { color: var(--accent); }
.tier-card.tier-3 .tier-label { color: var(--text-muted); }
.tier-metric { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; color: var(--text-bright); margin-bottom: 0.4rem; }
.tier-desc { font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-muted); line-height: 1.4; }

/* Key Data / Homepage sections */
.key-data-section { background: var(--bg-1); padding: 4rem 2rem; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-eyebrow { font-family: var(--font-data); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--oura); display: block; margin-bottom: 0.6rem; }
.section-title { font-family: var(--font-display); font-size: clamp(1.5rem,3vw,2rem); font-weight: 700; color: var(--text-bright); margin-bottom: 0.6rem; }
.section-intro { color: var(--text-secondary); font-size: 0.95rem; max-width: 600px; margin-bottom: 2rem; }
.comparison-info-box { background: var(--bg-card); border: 1px solid var(--border-strong); border-radius: var(--radius-lg); padding: 1.2rem 1.6rem; margin-top: 1.5rem; }
.comparison-info-box p { font-family: var(--font-ui); font-size: 0.85rem; color: var(--text-secondary); margin: 0; }
.comparison-info-box strong { color: var(--oura); }

/* Calculator */
.calculator-wrap { background: var(--bg-card); border: 1px solid var(--oura-border); border-radius: var(--radius-lg); padding: 2rem; margin: 2.5rem 0; }
.calculator-header { margin-bottom: 1.8rem; }
.calc-eyebrow { font-family: var(--font-data); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--oura); display: block; margin-bottom: 0.4rem; }
.calculator-header h3 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--text-bright); margin-top: 0; margin-bottom: 0.4rem; }
.calculator-header p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }
.calc-controls { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin-bottom: 1.8rem; }
.calc-field label { font-family: var(--font-data); font-size: 0.65rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-secondary); display: block; margin-bottom: 0.4rem; }
.calc-field select { width: 100%; background: var(--bg-2); border: 1px solid var(--border-strong); border-radius: var(--radius); color: var(--text-primary); font-family: var(--font-ui); font-size: 0.875rem; padding: 0.55rem 2rem 0.55rem 0.8rem; cursor: pointer; appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239a9488' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8rem center; }
.calc-field select:focus { outline: none; border-color: var(--oura-border); }
.calc-output { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; margin-bottom: 1.2rem; }
.tco-card { border-radius: var(--radius); padding: 1.4rem; text-align: center; }
.tco-card.whoop { background: var(--whoop-bg); border: 1px solid var(--whoop-border); }
.tco-card.oura  { background: var(--oura-bg);  border: 1px solid var(--oura-border); }
.tco-device { font-family: var(--font-data); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 0.5rem; }
.tco-card.whoop .tco-device { color: var(--whoop); }
.tco-card.oura  .tco-device { color: var(--oura); }
.tco-total { font-family: var(--font-data); font-size: 2.2rem; font-weight: 700; line-height: 1; margin-bottom: 0.3rem; }
.tco-card.whoop .tco-total { color: var(--whoop); }
.tco-card.oura  .tco-total { color: var(--oura); }
.tco-period { font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-muted); margin-bottom: 0.5rem; }
.tco-breakdown { font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-secondary); line-height: 1.4; }
.tco-winner-banner { background: rgba(196,160,96,0.1); border: 1px solid var(--oura-border); border-radius: var(--radius); padding: 0.8rem 1.2rem; text-align: center; font-family: var(--font-ui); font-size: 0.85rem; color: var(--oura-pale); margin-bottom: 1.5rem; min-height: 40px; }
.use-case-result { border-top: 1px solid var(--border); padding-top: 1.4rem; }
.use-case-result h4 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--text-bright); text-transform: none; letter-spacing: 0; margin-bottom: 0.5rem; }
.use-case-result > p { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 1rem; }
.use-case-scores { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.use-case-score-item { background: var(--bg-2); border-radius: var(--radius); padding: 1rem; transition: opacity 0.3s; }
.use-case-score-item.whoop-item { border-top: 2px solid var(--whoop); }
.use-case-score-item.oura-item  { border-top: 2px solid var(--oura); }
.use-case-score-item.loser { opacity: 0.55; }
.ucs-device { font-family: var(--font-data); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.3rem; }
.use-case-score-item.whoop-item .ucs-device { color: var(--whoop); }
.use-case-score-item.oura-item  .ucs-device { color: var(--oura); }
.ucs-verdict { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; color: var(--text-bright); margin-bottom: 0.2rem; }
.ucs-reason { font-family: var(--font-ui); font-size: 0.75rem; color: var(--text-muted); line-height: 1.45; margin-top: 0.4rem; }
.calc-disclaimer { font-family: var(--font-ui); font-size: 0.68rem; color: var(--text-muted); margin-top: 1rem; line-height: 1.5; border-top: 1px solid var(--border); padding-top: 0.8rem; }

/* Mini TCO Table */
.mini-tco-table { width: 100%; font-family: var(--font-data); font-size: 0.78rem; border-collapse: collapse; }
.mini-tco-table td { padding: 0.4rem 0; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
.mini-tco-table td:last-child { text-align: right; font-weight: 700; color: var(--text-bright); }
.mini-tco-table tr:last-child td { border-bottom: none; }

/* Footer */
.site-footer { background: var(--bg-1); border-top: 1px solid var(--border); padding: 4rem 2rem 0; }
.footer-main { max-width: var(--max-w); margin: 0 auto; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--border); }
.footer-brand-name { font-family: var(--font-data); font-size: 1.1rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-bright); margin-bottom: 0.6rem; }
.footer-brand-name span { color: var(--oura); }
.footer-brand-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }
.footer-col-title { font-family: var(--font-data); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 0.9rem; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.45rem; }
.footer-links a { font-family: var(--font-ui); font-size: 0.8rem; color: var(--text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--oura); text-decoration: none; }
.footer-disclosure { max-width: var(--max-w); margin: 0 auto; padding: 2.5rem 0 3rem; display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.disclosure-section h6 { font-family: var(--font-data); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 0.5rem; }
.disclosure-section p { font-family: var(--font-ui); font-size: 0.72rem; color: var(--text-muted); line-height: 1.6; }
.disclosure-section a { color: var(--text-muted); text-decoration: underline; }
.footer-bottom { border-top: 1px solid var(--border); padding: 1.2rem 0; max-width: var(--max-w); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-family: var(--font-ui); font-size: 0.7rem; color: var(--text-muted); margin: 0; }

/* Responsive */
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .device-cards { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .profile-grid { grid-template-columns: 1fr; }
  .calc-controls { grid-template-columns: 1fr; }
  .calc-output { grid-template-columns: 1fr; }
  .use-case-scores { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-disclosure { grid-template-columns: 1fr; gap: 1.5rem; }
  .pricing-grid { grid-template-columns: repeat(2,1fr); }
  .tier-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .nav-links { display: none; }
  .nav-inner { padding: 0 1.2rem; }
  .page-hero { padding: 3.5rem 1.2rem 3rem; }
  .content-wrap { padding: 2.5rem 1.2rem; }
  .container { padding: 0 1.2rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  .purchase-cta-buttons { flex-direction: column; align-items: center; }
  .hero-meta-row { gap: 0.6rem; }
  .pricing-grid { grid-template-columns: 1fr 1fr; }
}