/* ============================================================
   STATIONS ÉLECTRIQUES PORTABLES — Design System
   Tech comparator · Outdoor energy · Independent tool
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Variables --- */
:root {
  --bg:           #FFFFFF;
  --bg-alt:       #F6F7F9;
  --bg-dark:      #0E172A;
  --bg-card:      #FFFFFF;
  --white:        #FFFFFF;
  --text:         #1A2433;
  --text-muted:   #5A6A7A;
  --text-light:   #8A9BAB;
  --primary:      #0E172A;
  --accent:       #16B8A6;
  --accent-dk:    #12A090;
  --accent-lt:    #E0F7F4;
  --solar:        #F4C542;
  --solar-dk:     #D4A820;
  --solar-lt:     #FFFBEB;
  --border:       #E2E7ED;
  --border-dk:    #C8D2DC;

  /* Chemistry badges */
  --lifepo4-bg:   #D1FAE5; --lifepo4-text: #065F46;
  --liion-bg:     #E0E7FF; --liion-text:   #3730A3;

  /* Capacity tiers */
  --tier-xs-bg:   #F0FDF4; --tier-xs-text: #166534;
  --tier-sm-bg:   #EFF6FF; --tier-sm-text: #1E40AF;
  --tier-md-bg:   #F5F3FF; --tier-md-text: #5B21B6;
  --tier-lg-bg:   #FFF7ED; --tier-lg-text: #9A3412;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --radius-sm:  4px;
  --radius-md:  10px;
  --radius-lg:  14px;

  --shadow-xs:  0 1px 3px rgba(14,23,42,0.06);
  --shadow-sm:  0 2px 8px rgba(14,23,42,0.09);
  --shadow-md:  0 4px 20px rgba(14,23,42,0.12);

  --header-h:   60px;
  --qnav-h:     36px;
  --max-width:  1200px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); font-size: 15px; line-height: 1.65; color: var(--text); background: var(--bg); }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* --- Typography --- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(1.75rem, 3.5vw, 2.6rem); }
h2 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h3 { font-size: clamp(1.05rem, 1.8vw, 1.25rem); }
h4 { font-size: 0.95rem; }
p  { font-size: 0.9375rem; line-height: 1.7; }
.lead { font-size: 1.05rem; color: var(--text-muted); line-height: 1.75; }
.mono { font-family: var(--font-mono); }

/* --- Layout --- */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section        { padding: 64px 0; }
.section--alt   { background: var(--bg-alt); }
.section--white { background: var(--white); }
.section--dark  { background: var(--bg-dark); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.header-main {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h);
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  gap: 20px;
}

/* Logo */
.site-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 34px; height: 34px; flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-l1 { font-size: 0.88rem; font-weight: 800; color: var(--bg-dark); letter-spacing: -0.01em; text-transform: uppercase; }
.logo-l2 { font-size: 0.62rem; font-weight: 600; color: var(--accent); letter-spacing: 0.07em; text-transform: uppercase; }

/* Nav */
.site-nav { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 11px;
  font-size: 0.8rem; font-weight: 600; color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.nav-link:hover, .nav-item:hover > .nav-link { color: var(--accent); background: var(--accent-lt); }
.nav-link .chev { width: 12px; height: 12px; stroke: currentColor; fill: none; stroke-width: 2.5; transition: transform 0.2s; }
.nav-item:hover > .nav-link .chev { transform: rotate(180deg); }

/* Dropdown */
.dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 220px;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
  padding: 6px; opacity: 0; visibility: hidden;
  transform: translateY(-4px); transition: opacity 0.15s, transform 0.15s, visibility 0.15s; z-index: 200;
}
.nav-item:hover > .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 7px 10px; font-size: 0.81rem; font-weight: 500; color: var(--text); border-radius: var(--radius-sm); transition: background 0.1s, color 0.1s; }
.dropdown a:hover { background: var(--accent-lt); color: var(--accent-dk); }
.dd-label { padding: 8px 10px 4px; font-size: 0.67rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; color: var(--text-light); }
.dd-sep { height: 1px; background: var(--border); margin: 4px 0; }

/* CTA + Burger */
.header-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; background: var(--accent); color: var(--white);
  font-size: 0.78rem; font-weight: 700; border-radius: var(--radius-sm);
  white-space: nowrap; letter-spacing: -0.01em; transition: background 0.15s; flex-shrink: 0;
}
.header-cta:hover { background: var(--accent-dk); }
.burger { display: none; flex-direction: column; gap: 4px; padding: 6px; }
.burger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; }

/* Quick nav bar */
.quick-nav {
  background: var(--bg-dark);
  height: var(--qnav-h);
  display: flex; align-items: center;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.quick-nav-inner {
  display: flex; align-items: center; gap: 0;
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
}
.qn-label { font-size: 0.65rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-right: 12px; white-space: nowrap; }
.qn-links { display: flex; gap: 2px; flex-wrap: nowrap; overflow: hidden; }
.qn-links a {
  display: inline-block; padding: 4px 10px;
  font-size: 0.72rem; font-weight: 500; color: rgba(255,255,255,0.55);
  border-radius: 3px; white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}
.qn-links a:hover { background: rgba(22,184,166,0.15); color: var(--accent); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 10px 20px; font-size: 0.875rem; font-weight: 700;
  border-radius: var(--radius-sm); letter-spacing: -0.01em;
  transition: background 0.15s, color 0.15s; white-space: nowrap; cursor: pointer;
}
.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dk); }
.btn-dark     { background: var(--bg-dark); color: #fff; }
.btn-dark:hover { background: #182237; }
.btn-solar    { background: var(--solar); color: var(--bg-dark); }
.btn-solar:hover { background: var(--solar-dk); }
.btn-outline  { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-outline:hover { background: var(--accent); color: #fff; }
.btn-ghost    { background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm  { padding: 6px 12px; font-size: 0.78rem; }
.btn-lg  { padding: 13px 28px; font-size: 0.95rem; }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 3px;
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500;
  letter-spacing: 0.02em; white-space: nowrap;
}
.badge-lifepo4  { background: var(--lifepo4-bg); color: var(--lifepo4-text); }
.badge-liion    { background: var(--liion-bg);   color: var(--liion-text); }
.badge-accent   { background: var(--accent-lt);  color: var(--accent-dk); }
.badge-solar    { background: var(--solar-lt);   color: var(--solar-dk); }
.badge-gray     { background: var(--bg-alt);     color: var(--text-muted); }
.badge-dark     { background: var(--bg-dark);    color: rgba(255,255,255,0.7); }
.badge-xs  { background: var(--tier-xs-bg); color: var(--tier-xs-text); }
.badge-sm  { background: var(--tier-sm-bg); color: var(--tier-sm-text); }
.badge-md  { background: var(--tier-md-bg); color: var(--tier-md-text); }
.badge-lg  { background: var(--tier-lg-bg); color: var(--tier-lg-text); }

.ctype { display: inline-block; padding: 2px 8px; border-radius: 3px; font-size: 0.67rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase; }
.ctype-comp   { background: #DBEAFE; color: #1E40AF; }
.ctype-usage  { background: var(--accent-lt); color: var(--accent-dk); }
.ctype-guide  { background: #EDE9FE; color: #5B21B6; }
.ctype-modele { background: var(--solar-lt); color: var(--solar-dk); }
.ctype-solaire { background: var(--solar-lt); color: #B45309; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: linear-gradient(135deg, var(--bg-dark) 0%, #152240 100%);
  color: white; padding: 72px 0 64px;
}
.hero-inner { display: grid; grid-template-columns: 1fr 380px; gap: 64px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; background: rgba(22,184,166,0.15);
  border: 1px solid rgba(22,184,166,0.3); border-radius: 3px;
  font-family: var(--font-mono); font-size: 0.7rem; font-weight: 500;
  color: var(--accent); letter-spacing: 0.04em; margin-bottom: 16px;
}
.hero-title { color: #fff; margin-bottom: 16px; }
.hero-title em { color: var(--accent); font-style: normal; }
.hero-desc { color: rgba(255,255,255,0.6); margin-bottom: 28px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* Quick finder box */
.hero-finder {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.finder-title { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 16px; }
.finder-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 16px; }
.finder-btn {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm); padding: 10px 12px;
  transition: background 0.15s, border-color 0.15s; cursor: pointer;
  text-decoration: none;
}
.finder-btn:hover { background: rgba(22,184,166,0.15); border-color: rgba(22,184,166,0.4); }
.finder-btn-label { font-size: 0.82rem; font-weight: 600; color: rgba(255,255,255,0.85); }
.finder-btn-sub   { font-size: 0.7rem; color: rgba(255,255,255,0.4); font-family: var(--font-mono); }
.finder-cta { display: flex; gap: 8px; }
.finder-cta a { flex: 1; text-align: center; justify-content: center; font-size: 0.78rem; }

/* ============================================================
   USAGE CARDS
   ============================================================ */
.usage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.usage-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 20px 16px;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color 0.15s, box-shadow 0.15s; text-decoration: none;
}
.usage-card:hover { border-color: var(--accent); box-shadow: var(--shadow-xs); }
.usage-icon { font-size: 1.5rem; margin-bottom: 2px; line-height: 1; }
.usage-card h3 { font-size: 0.9rem; font-weight: 700; letter-spacing: -0.01em; color: var(--text); }
.usage-card p  { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }
.usage-card-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
.usage-card-tags span { font-family: var(--font-mono); font-size: 0.65rem; color: var(--accent); background: var(--accent-lt); padding: 2px 6px; border-radius: 2px; }

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.product-card:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.product-card-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.product-card-img {
  height: 140px; background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; color: var(--text-light); font-family: var(--font-mono);
}

/* Wh + W display — the signature spec block */
.product-specs-hero {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--border);
}
.spec-hero-block {
  flex: 1; padding: 14px 16px; text-align: center;
  border-right: 1px solid var(--border);
}
.spec-hero-block:last-child { border-right: none; }
.spec-hero-val { font-family: var(--font-mono); font-size: 1.2rem; font-weight: 700; color: var(--text); line-height: 1; }
.spec-hero-val em { font-size: 0.7rem; font-style: normal; color: var(--text-muted); }
.spec-hero-key { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-light); margin-top: 4px; }

.product-card-body { padding: 14px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.product-card-body h3 { font-size: 0.95rem; font-weight: 700; letter-spacing: -0.01em; line-height: 1.3; }
.product-card-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.product-verdict { font-size: 0.78rem; color: var(--text-muted); }
.product-card-foot { display: flex; gap: 8px; padding: 10px 14px; border-top: 1px solid var(--border); }
.product-card-foot .btn { flex: 1; justify-content: center; font-size: 0.75rem; padding: 7px 10px; }

/* ============================================================
   SPEC SHEET (model pages)
   ============================================================ */
.spec-sheet { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.spec-sheet-header { background: var(--bg-dark); padding: 10px 16px; display: flex; align-items: center; justify-content: space-between; }
.spec-sheet-header span { font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.45); }
.spec-sheet-header .verified { font-size: 0.63rem; color: rgba(22,184,166,0.7); }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr:nth-child(even) td { background: var(--bg-alt); }
.spec-table td { padding: 9px 14px; font-size: 0.8rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table .sk { font-weight: 600; color: var(--text-muted); width: 42%; font-size: 0.75rem; }
.spec-table .sv { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text); }

/* Big spec display (top of model page) */
.model-kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 24px; }
.kpi-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; text-align: center; }
.kpi-val { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--text); line-height: 1; }
.kpi-val em { font-size: 0.7rem; color: var(--text-muted); font-style: normal; }
.kpi-label { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-light); margin-top: 5px; }

/* ============================================================
   USAGE STAR RATINGS
   ============================================================ */
.usage-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.usage-score-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 12px 14px; }
.usc-name { font-size: 0.78rem; font-weight: 600; color: var(--text); margin-bottom: 5px; }
.usc-stars { font-size: 0.95rem; letter-spacing: 1px; }
.star-full  { color: var(--accent); }
.star-empty { color: var(--border-dk); }

/* ============================================================
   "QUE PEUT-ELLE ALIMENTER ?" TABLE
   ============================================================ */
.power-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--white); }
.power-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.power-table thead th {
  background: var(--bg-dark); color: rgba(255,255,255,0.55);
  font-family: var(--font-mono); font-size: 0.67rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 10px 14px; text-align: left; white-space: nowrap;
}
.power-table thead th:first-child { color: rgba(255,255,255,0.85); }
.power-table tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.power-table tbody tr:last-child td { border-bottom: none; }
.power-table tbody tr:hover td { background: var(--bg-alt); }
.power-table .col-aut { font-family: var(--font-mono); font-weight: 600; color: var(--accent); }
.power-table .col-w   { font-family: var(--font-mono); color: var(--text-muted); }
.power-note { font-size: 0.72rem; color: var(--text-muted); padding: 10px 14px; border-top: 1px solid var(--border); background: var(--bg-alt); }

/* ============================================================
   CALCULATOR
   ============================================================ */
.calculator {
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  padding: 36px;
  color: white;
}
.calc-header { margin-bottom: 28px; }
.calc-eyebrow { font-family: var(--font-mono); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.calc-header h2 { color: white; font-size: 1.5rem; }
.calc-inputs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.calc-field { display: flex; flex-direction: column; gap: 6px; }
.calc-field label { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.5); }
.calc-field input {
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm); padding: 12px 14px;
  font-family: var(--font-mono); font-size: 1rem; font-weight: 600; color: white;
  width: 100%; transition: border-color 0.15s;
}
.calc-field input:focus { outline: none; border-color: var(--accent); }
.calc-field input::placeholder { color: rgba(255,255,255,0.2); font-weight: 400; }
.calc-btn {
  width: 100%; padding: 13px; background: var(--accent); color: white;
  font-size: 0.9rem; font-weight: 700; border-radius: var(--radius-sm);
  cursor: pointer; border: none; transition: background 0.15s; margin-bottom: 24px;
  font-family: var(--font-sans);
}
.calc-btn:hover { background: var(--accent-dk); }
.calc-result { display: none; }
.calc-result.active { display: block; }
.calc-result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.calc-result-box {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md); padding: 16px; text-align: center;
}
.calc-result-box.highlight { background: rgba(22,184,166,0.12); border-color: rgba(22,184,166,0.3); }
.crb-val { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: var(--accent); line-height: 1; }
.crb-label { font-size: 0.72rem; color: rgba(255,255,255,0.5); margin-top: 5px; }
.calc-matches-title { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 10px; }
.calc-matches { display: flex; flex-direction: column; gap: 6px; }
.calc-match-row {
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm); padding: 10px 14px;
  transition: background 0.15s; text-decoration: none;
}
.calc-match-row:hover { background: rgba(22,184,166,0.12); border-color: rgba(22,184,166,0.2); }
.cmr-name { font-size: 0.82rem; font-weight: 600; color: rgba(255,255,255,0.85); }
.cmr-specs { font-family: var(--font-mono); font-size: 0.72rem; color: var(--accent); }
.calc-no-result { text-align: center; padding: 20px; color: rgba(255,255,255,0.4); font-size: 0.85rem; }

/* ============================================================
   DATA TABLE (comparatifs)
   ============================================================ */
.data-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--white); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.data-table thead th {
  background: var(--bg-dark); color: rgba(255,255,255,0.6);
  font-family: var(--font-mono); font-size: 0.67rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 11px 14px; text-align: left; white-space: nowrap;
}
.data-table thead th:first-child { color: white; }
.data-table tbody td { padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--bg-alt); }
.data-table .col-model { font-weight: 600; }
.data-table .col-num   { font-family: var(--font-mono); color: var(--text-muted); }
.data-table .col-num strong { color: var(--text); font-weight: 600; }
.data-table .row-pick td { background: #EBF9F8; }
.data-table .row-pick:hover td { background: #D4F4F1; }
.verdict-pill { display: inline-block; padding: 2px 8px; background: var(--accent); color: white; border-radius: 3px; font-size: 0.67rem; font-family: var(--font-mono); font-weight: 500; }
.check-yes { color: var(--accent); font-weight: 600; }
.check-no  { color: var(--border-dk); }

/* W vs Wh guide component */
.wvswh { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: center; margin: 24px 0; }
.wvswh-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; text-align: center; }
.wvswh-box.primary { background: var(--accent-lt); border-color: rgba(22,184,166,0.3); }
.wvswh-unit { font-family: var(--font-mono); font-size: 2.5rem; font-weight: 700; color: var(--text); line-height: 1; }
.wvswh-box.primary .wvswh-unit { color: var(--accent-dk); }
.wvswh-name { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); margin: 8px 0 4px; }
.wvswh-desc { font-size: 0.82rem; color: var(--text-muted); }
.wvswh-sep { font-size: 1.2rem; color: var(--text-light); font-weight: 300; text-align: center; }

/* ============================================================
   SOLAR COMPAT TABLE
   ============================================================ */
.solar-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.solar-table th { background: var(--solar-lt); color: var(--solar-dk); font-family: var(--font-mono); font-size: 0.67rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 10px 14px; text-align: left; border-bottom: 2px solid var(--solar); }
.solar-table td { padding: 10px 14px; border-bottom: 1px solid var(--border); }
.solar-table .col-w { font-family: var(--font-mono); font-weight: 600; color: var(--solar-dk); }

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-head { margin-bottom: 32px; }
.section-head .eyebrow { font-family: var(--font-mono); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 6px; }
.section-head h2 { margin-bottom: 8px; }
.section-head p  { color: var(--text-muted); font-size: 0.9rem; }
.section-head--center { text-align: center; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ============================================================
   HUB LINKS
   ============================================================ */
.hub-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.hub-link {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 14px 16px; font-size: 0.875rem; font-weight: 600;
  letter-spacing: -0.01em; transition: border-color 0.15s, background 0.15s;
}
.hub-link:hover { border-color: var(--accent); background: var(--accent-lt); color: var(--accent-dk); }
.hub-link-meta { font-size: 0.7rem; color: var(--text-light); font-family: var(--font-mono); margin-top: 2px; font-weight: 400; }
.hub-link-right { color: var(--text-light); }

/* ============================================================
   GUIDE CARDS
   ============================================================ */
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.guide-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 18px; display: flex; flex-direction: column; gap: 6px; transition: border-color 0.15s; }
.guide-card:hover { border-color: var(--accent); }
.guide-card .guide-q { font-size: 0.875rem; font-weight: 600; letter-spacing: -0.01em; line-height: 1.3; color: var(--text); }
.guide-card .guide-hint { font-size: 0.78rem; color: var(--text-muted); }
.guide-card .guide-arrow { margin-top: auto; font-size: 0.78rem; color: var(--accent); font-weight: 600; }

/* ============================================================
   BRAND CARDS
   ============================================================ */
.brand-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.brand-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px; display: flex; flex-direction: column; gap: 8px; transition: border-color 0.15s; }
.brand-card:hover { border-color: var(--accent); }
.brand-name { font-size: 1.05rem; font-weight: 700; letter-spacing: -0.02em; }
.brand-tier { font-family: var(--font-mono); font-size: 0.65rem; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase; color: var(--text-light); }
.brand-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.5; }

/* ============================================================
   PAGE HERO + CONTENT LAYOUT
   ============================================================ */
.page-hero { background: var(--white); border-bottom: 1px solid var(--border); padding: 48px 0 40px; }
.breadcrumb { display: flex; gap: 6px; align-items: center; font-size: 0.75rem; color: var(--text-light); margin-bottom: 14px; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-light); transition: color 0.1s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.4; }
.page-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.meta-tag { display: inline-flex; align-items: center; gap: 4px; padding: 3px 8px; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 3px; font-family: var(--font-mono); font-size: 0.67rem; color: var(--text-muted); }

.content-layout { display: grid; grid-template-columns: 1fr 260px; gap: 40px; padding: 48px 0 80px; align-items: start; }
.content-main { min-width: 0; }
.content-main h2 { margin: 36px 0 12px; }
.content-main h3 { margin: 24px 0 10px; }
.content-main p  { margin-bottom: 14px; }
.content-main ul { list-style: disc; padding-left: 18px; }
.content-main ul li { padding: 3px 0; font-size: 0.9rem; }

.content-sidebar { position: sticky; top: calc(var(--header-h) + var(--qnav-h) + 16px); display: flex; flex-direction: column; gap: 12px; }
.sidebar-box { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.sidebar-box-head { background: var(--bg-alt); padding: 8px 14px; font-family: var(--font-mono); font-size: 0.67rem; font-weight: 500; letter-spacing: 0.09em; text-transform: uppercase; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.sidebar-box-body { padding: 12px 14px; }
.toc-list { display: flex; flex-direction: column; gap: 1px; }
.toc-list a { display: block; padding: 5px 8px; font-size: 0.78rem; color: var(--text-muted); border-radius: 3px; border-left: 2px solid transparent; transition: color 0.1s, border-color 0.1s; }
.toc-list a:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-lt); }
.affil-note { font-size: 0.72rem; color: var(--text-muted); line-height: 1.55; }
.affil-note a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* Answer box */
.answer-box { background: var(--accent-lt); border: 1px solid rgba(22,184,166,0.3); border-left: 3px solid var(--accent); border-radius: var(--radius-md); padding: 18px 20px; margin: 24px 0; }
.answer-box p { margin: 0; font-size: 0.9rem; line-height: 1.65; color: var(--text); }
.answer-box strong { color: var(--accent-dk); }

/* Related box */
.related-box { background: var(--bg-alt); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; margin: 28px 0; }
.related-box h4 { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 10px; }
.related-links { display: flex; flex-direction: column; gap: 4px; }
.related-links a { font-size: 0.82rem; color: var(--accent-dk); font-weight: 500; padding: 3px 0; display: flex; align-items: center; gap: 6px; }
.related-links a::before { content: '→'; opacity: 0.6; }
.related-links a:hover { text-decoration: underline; text-underline-offset: 2px; }

/* Pro/Con */
.pro-con-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.pro-box, .con-box { border-radius: var(--radius-md); padding: 16px; border: 1px solid; }
.pro-box { background: #F0FDF4; border-color: #BBF7D0; }
.con-box { background: #FFF7ED; border-color: #FED7AA; }
.pro-box h4 { color: #15803D; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.con-box h4 { color: #C2410C; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.pro-box li, .con-box li { font-size: 0.82rem; padding: 4px 0 4px 14px; position: relative; }
.pro-box li::before { content: '+'; position: absolute; left: 0; color: #15803D; font-weight: 700; }
.con-box li::before { content: '–'; position: absolute; left: 0; color: #C2410C; font-weight: 700; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.5); }
.footer-main { display: grid; grid-template-columns: 2.5fr 1fr 1fr 1fr; gap: 48px; padding: 52px 0 44px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-tagline { margin-top: 10px; font-size: 0.8rem; line-height: 1.6; color: rgba(255,255,255,0.35); max-width: 280px; }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.63rem; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.25); margin-bottom: 12px; }
.footer-col a { display: block; font-size: 0.8rem; color: rgba(255,255,255,0.45); padding: 3px 0; transition: color 0.15s; }
.footer-col a:hover { color: rgba(255,255,255,0.9); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; font-size: 0.72rem; color: rgba(255,255,255,0.2); flex-wrap: wrap; gap: 8px; }
.footer-bottom a { color: rgba(255,255,255,0.2); }
.footer-bottom a:hover { color: rgba(255,255,255,0.5); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .usage-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .content-layout { grid-template-columns: 1fr; }
  .content-sidebar { position: static; }
  .model-kpi-row { grid-template-columns: repeat(2, 1fr); }
  .usage-matrix { grid-template-columns: repeat(2, 1fr); }
  .wvswh { grid-template-columns: 1fr; }
  .wvswh-sep { display: none; }
}
@media (max-width: 768px) {
  .site-nav, .header-cta { display: none; }
  .burger { display: flex; }
  .quick-nav { display: none; }
  .usage-grid { grid-template-columns: 1fr 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .brand-grid { grid-template-columns: 1fr 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .hub-grid  { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .section { padding: 44px 0; }
  .calc-inputs { grid-template-columns: 1fr; }
  .calc-result-grid { grid-template-columns: 1fr; }
  .model-kpi-row { grid-template-columns: repeat(2, 1fr); }
  .pro-con-grid { grid-template-columns: 1fr; }
}