/* ============================================
   THE SMARTER PLAY — V2: TECHNICAL / ENGINEERING
   Equipment R&D Lab × Wirecutter
   ============================================ */

/* --- Google Fonts loaded in HTML:
   IBM Plex Sans (headings), IBM Plex Mono (data), Inter (body) --- */

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

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  /* Cool grays — lab report palette */
  --bg: #f4f5f7;
  --bg-alt: #ebedf0;
  --bg-card: #ffffff;
  --bg-dark: #1a1d23;
  --bg-darker: #12141a;

  --ink: #1a1d23;
  --ink-secondary: #4a4f5c;
  --ink-muted: #7a8194;
  --ink-faint: #b0b6c4;
  --ink-ghost: #d0d4de;

  --rule: #d0d4de;
  --rule-light: #e2e5eb;
  --rule-dark: rgba(255,255,255,0.12);

  /* Accent — technical teal-green */
  --accent: #00b87a;
  --accent-dark: #009963;
  --accent-bg: rgba(0,184,122,0.08);

  /* Sport colors — slightly muted/technical */
  --golf: #2ea44f;
  --baseball: #d4722c;
  --skiing: #3a7bd5;
  --snowboarding: #7c5cbf;
  --tennis: #c9a800;
  --pickleball: #1a9e8f;
  --basketball: #cf3b3b;
  --soccer: #0e8fbb;
  --cycling: #d43a5a;
  --swimming: #0b87c9;

  /* Typography */
  --font-heading: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Menlo', 'Consolas', monospace;

  /* Layout */
  --max-width: 1400px;
  --content-width: 720px;
  --transition: 0.2s ease;
  --radius: 2px;

  /* Blueprint dot grid (subtle) */
  --dot-grid: radial-gradient(circle, #c8cdd6 0.5px, transparent 0.5px);
  --dot-size: 20px;
}

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }

.label,
.overline {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.subtitle {
  font-size: 1.0625rem;
  color: var(--ink-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* Monospace data class */
.mono, .spec-value, .product-card-price, .article-card-meta,
.popular-num, .source-num, .breadcrumbs, .filter-btn,
.article-meta, .toc-title, .callout-title { font-family: var(--font-mono); }

/* --- Layout --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 clamp(1rem, 4vw, 3rem); }
.section { padding: clamp(3rem, 8vw, 5rem) 0; }

/* --- Hairline Utility --- */
.hairline { border: none; height: 1px; background: var(--rule); }

/* --- Header --- */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(244,245,247,0.95);
  backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid var(--rule);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 1px 8px rgba(0,0,0,0.06); }
.site-header.scrolled .header-inner { padding-top: 0.4rem; padding-bottom: 0.4rem; }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 0; transition: padding var(--transition);
}

/* Logo — engineering mark */
.logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700; font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
}
.logo span { color: var(--accent); }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border: 2px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

/* Nav */
.main-nav { display: flex; align-items: center; gap: 0; }
.nav-item {
  position: relative; padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-secondary);
  cursor: pointer; transition: color var(--transition);
}
.nav-item:hover { color: var(--ink); }
.nav-item::after {
  content: ''; position: absolute;
  bottom: 0; left: 1rem; right: 1rem;
  height: 1px; background: var(--accent);
  transform: scaleX(0); transition: transform var(--transition);
}
.nav-item:hover::after { transform: scaleX(1); }

/* Mega Menu */
.mega-menu {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--rule);
  border-top: 2px solid var(--accent);
  padding: 2rem 0;
  opacity: 0; visibility: hidden; transform: translateY(-4px);
  transition: all 0.2s ease;
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.nav-trigger:hover .mega-menu,
.mega-menu:hover { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2rem; }
.mega-sport { display: flex; flex-direction: column; gap: 0.5rem; }
.mega-sport-title {
  font-family: var(--font-mono);
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}
.mega-sport-link { font-size: 0.8125rem; color: var(--ink-secondary); transition: color var(--transition); }
.mega-sport-link:hover { color: var(--accent); }
.mega-all-link { font-family: var(--font-mono); font-size: 0.6875rem; font-weight: 600; color: var(--ink-faint); margin-top: 0.25rem; }
.mega-all-link:hover { color: var(--accent); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: var(--transition); }

/* Search */
.search-toggle { cursor: pointer; padding: 0.5rem; color: var(--ink-muted); transition: color var(--transition); }
.search-toggle:hover { color: var(--ink); }
.search-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(244,245,247,0.97);
  backdrop-filter: blur(20px);
  display: none; align-items: flex-start; justify-content: center; padding-top: 18vh;
}
.search-overlay.active { display: flex; }
.search-box { width: 100%; max-width: 700px; padding: 0 2rem; }
.search-input {
  width: 100%; border: none;
  border-bottom: 2px solid var(--ink);
  font-size: 2rem; font-weight: 600; padding: 1rem 0;
  outline: none; background: transparent;
  font-family: var(--font-heading);
  color: var(--ink);
}
.search-input::placeholder { color: var(--ink-ghost); }
.search-close { position: absolute; top: 2rem; right: 2rem; font-size: 2rem; cursor: pointer; color: var(--ink-muted); }

/* --- Hero --- */
.hero {
  position: relative; min-height: 80vh; display: flex; align-items: center;
  overflow: hidden; background: var(--bg-dark);
}
.hero::before {
  content: '';
  position: absolute; inset: 0; z-index: 1;
  background: var(--dot-grid);
  background-size: var(--dot-size) var(--dot-size);
  opacity: 0.06;
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.35;
  filter: grayscale(30%) contrast(1.1);
}
.hero-content { position: relative; z-index: 2; color: #fff; width: 100%; padding: 4rem 0; }
.hero h1 { color: #fff; margin-bottom: 1rem; max-width: 700px; }
.hero .subtitle { color: rgba(255,255,255,0.6); margin-bottom: 2rem; }

/* Hero badge */
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.625rem; font-weight: 600;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(0,184,122,0.4);
  padding: 0.35rem 0.75rem;
  margin-bottom: 1.5rem;
}
.hero-badge::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-cta {
  display: inline-flex; align-items: center; gap: 0.75rem;
  background: var(--accent); color: #fff;
  padding: 0.875rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  transition: all var(--transition);
}
.hero-cta:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,184,122,0.3); }
.hero-cta svg { width: 14px; height: 14px; }

/* Hero Carousel */
.hero-indicators { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); display: flex; gap: 0.5rem; z-index: 5; }
.hero-dot { width: 32px; height: 2px; background: rgba(255,255,255,0.25); cursor: pointer; border: none; transition: all var(--transition); }
.hero-dot.active { background: var(--accent); width: 48px; }

/* --- Section Headers --- */
.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 2rem; gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}
.section-header h2 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
.view-all {
  font-family: var(--font-mono);
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-muted); white-space: nowrap;
  transition: color var(--transition);
}
.view-all:hover { color: var(--accent); }

/* --- Article Cards — R&D Evaluation Style --- */
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.article-grid--2col { grid-template-columns: repeat(2, 1fr); }

.article-card {
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  transition: border-color var(--transition), box-shadow var(--transition);
  cursor: pointer;
  overflow: hidden;
}
.article-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.article-card-img {
  aspect-ratio: 16/10; overflow: hidden;
  background: var(--bg-alt);
  position: relative;
}
.article-card-img::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(26,29,35,0.05));
}
.article-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85);
  transition: filter 0.3s ease, transform 0.5s ease;
}
.article-card:hover .article-card-img img { filter: saturate(1); transform: scale(1.03); }

.article-card-body { padding: 1.25rem; display: flex; flex-direction: column; flex: 1; }
.article-card-tag {
  font-family: var(--font-mono);
  font-size: 0.625rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.article-card-title {
  font-size: 1rem; font-weight: 700; line-height: 1.35;
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}
.article-card:hover .article-card-title { color: var(--accent-dark); }
.article-card-excerpt {
  font-size: 0.8125rem; color: var(--ink-secondary); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  flex: 1;
}
.article-card-meta {
  margin-top: 1rem; padding-top: 0.75rem;
  border-top: 1px solid var(--rule-light);
  font-size: 0.6875rem; font-weight: 500;
  color: var(--ink-faint);
  display: flex; align-items: center; gap: 1rem;
}
.article-card-meta::before {
  content: '◆';
  color: var(--ink-ghost);
  font-size: 0.5rem;
}

/* Featured Article — full-width R&D report card */
.featured-article {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  padding: 0;
  overflow: hidden;
}
.featured-article-img {
  aspect-ratio: 4/3; overflow: hidden; background: var(--bg-alt);
}
.featured-article-img img {
  width: 100%; height: 100%; object-fit: cover;
  filter: saturate(0.85);
}
.featured-article-content { padding: 2rem 2rem 2rem 0; }
.featured-article-content .overline { margin-bottom: 0.75rem; display: block; }
.featured-article-content h2 { margin-bottom: 0.75rem; font-size: clamp(1.5rem, 3vw, 2rem); }
.featured-article-content .subtitle { margin-bottom: 1.25rem; font-size: 0.9375rem; }
.read-more {
  font-family: var(--font-mono);
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
  transition: all var(--transition);
}
.read-more:hover { color: var(--accent-dark); border-color: var(--accent-dark); }

/* --- Sport Cards (Category Grid) --- */
.sport-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.75rem; }
.sport-grid--featured { grid-template-columns: repeat(2, 1fr); gap: 0.75rem; margin-bottom: 0.75rem; }

.sport-card {
  position: relative; overflow: hidden;
  aspect-ratio: 4/5; cursor: pointer; background: var(--bg-alt);
  border: 1px solid var(--rule);
  transition: border-color var(--transition);
}
.sport-card:hover { border-color: var(--accent); }
.sport-card--wide { aspect-ratio: 16/9; }
.sport-card-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.05);
  transition: filter 0.4s ease, transform 0.6s ease;
}
.sport-card:hover .sport-card-img { filter: saturate(0.9) contrast(1.05); transform: scale(1.04); }
.sport-card-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(26,29,35,0.85) 0%, rgba(26,29,35,0.1) 60%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 1.25rem;
}
.sport-card-name {
  color: #fff; font-family: var(--font-heading);
  font-size: 1.125rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.03em;
}
.sport-card-count {
  font-family: var(--font-mono);
  color: rgba(255,255,255,0.5);
  font-size: 0.625rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-top: 0.25rem;
}

/* --- Dot Grid Section Background --- */
.section--grid {
  background: var(--bg-alt);
  background-image: var(--dot-grid);
  background-size: var(--dot-size) var(--dot-size);
}

/* --- Sport Landing Page --- */
.sport-hero {
  position: relative; height: 45vh; min-height: 350px; display: flex; align-items: flex-end;
  overflow: hidden; background: var(--bg-dark);
}
.sport-hero::before {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: var(--dot-grid);
  background-size: var(--dot-size) var(--dot-size);
  opacity: 0.05;
}
.sport-hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0.35; filter: grayscale(30%);
}
.sport-hero-content { position: relative; z-index: 2; color: #fff; width: 100%; padding-bottom: 2.5rem; }
.sport-hero h1 { text-transform: uppercase; margin-bottom: 0.5rem; }
.sport-hero .subtitle { color: rgba(255,255,255,0.6); }

/* Filters — engineering toggle style */
.filters {
  display: flex; gap: 0.375rem; padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2rem; flex-wrap: wrap;
}
.filter-btn {
  padding: 0.4rem 1rem;
  font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  border: 1px solid var(--rule);
  cursor: pointer; background: var(--bg-card);
  color: var(--ink-secondary);
  transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--ink-secondary); color: var(--ink); }
.filter-btn.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Popular Sidebar */
.sport-layout { display: grid; grid-template-columns: 1fr 280px; gap: 2.5rem; }
.popular-sidebar { position: sticky; top: 100px; align-self: start; }
.popular-sidebar h3 {
  font-family: var(--font-mono);
  text-transform: uppercase; margin-bottom: 1.25rem;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.1em; color: var(--ink-muted);
}
.popular-item {
  display: flex; gap: 0.75rem; padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule-light);
  align-items: flex-start;
  transition: color var(--transition);
}
.popular-item:hover { color: var(--accent); }
.popular-num {
  font-size: 0.875rem; font-weight: 700;
  color: var(--ink-ghost); line-height: 1.4;
  min-width: 2rem;
}
.popular-title { font-size: 0.8125rem; font-weight: 600; line-height: 1.4; }

/* --- Article Page --- */
.article-header { padding: 2.5rem 0 1.5rem; max-width: 800px; margin: 0 auto; }
.article-header .overline { margin-bottom: 0.75rem; display: block; }
.article-header h1 { margin-bottom: 0.75rem; font-size: clamp(1.75rem, 4.5vw, 3rem); }
.article-header .subtitle { margin-bottom: 1.25rem; font-size: 1.125rem; }
.article-meta {
  display: flex; align-items: center; gap: 1.25rem;
  font-size: 0.6875rem; font-weight: 500;
  color: var(--ink-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--rule);
}
.article-meta-dot::before { content: '·'; color: var(--ink-ghost); }

/* Article hero — with subtle scale marks */
.article-hero-img {
  width: 100%; max-width: 1000px; margin: 0 auto 2.5rem;
  aspect-ratio: 2/1; overflow: hidden;
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  position: relative;
}
.article-hero-img img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.85); }

/* Article Layout */
.article-layout {
  display: grid; grid-template-columns: 180px var(--content-width) 1fr;
  gap: 2.5rem; max-width: 1100px; margin: 0 auto;
}

/* TOC — ruler style */
.article-toc {
  position: sticky; top: 90px; align-self: start;
  padding-right: 1.25rem;
  border-right: 1px solid var(--rule-light);
}
.toc-title {
  font-size: 0.625rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--ink-faint);
  margin-bottom: 1rem;
}
.toc-link {
  display: block; font-size: 0.75rem; color: var(--ink-muted);
  padding: 0.3rem 0 0.3rem 0.75rem;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: all var(--transition);
  line-height: 1.4;
}
.toc-link:hover { color: var(--ink); }
.toc-link.active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

/* Article Content */
.article-content { max-width: var(--content-width); }
.article-content h2 {
  font-size: 1.5rem; margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule-light);
}
.article-content h3 { font-size: 1.125rem; margin: 2rem 0 0.75rem; }
.article-content p { font-size: 1rem; line-height: 1.8; color: var(--ink-secondary); margin-bottom: 1.25rem; }
.article-content ul, .article-content ol { margin-bottom: 1.25rem; padding-left: 1.25rem; }
.article-content li { font-size: 1rem; line-height: 1.8; color: var(--ink-secondary); margin-bottom: 0.4rem; list-style: disc; }
.article-content ol li { list-style: decimal; }
.article-content strong { color: var(--ink); }

/* Pull Quote — engineering callout */
.pull-quote {
  border-left: 3px solid var(--accent);
  padding: 1.25rem 0 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 1.125rem; font-weight: 600;
  line-height: 1.5; color: var(--ink);
  font-style: normal;
  background: var(--accent-bg);
}

/* Callout Box — technical report */
.callout {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.callout-title {
  font-size: 0.625rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.callout p { font-size: 0.875rem; margin-bottom: 0; color: var(--ink-secondary); }

/* Product Card — R&D evaluation report */
.product-card {
  display: grid; grid-template-columns: 120px 1fr; gap: 1.25rem;
  align-items: start;
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  margin: 1.5rem 0;
  position: relative;
  transition: border-color var(--transition);
}
.product-card::before {
  content: 'EVALUATION';
  position: absolute; top: -0.5rem; right: 1rem;
  font-family: var(--font-mono);
  font-size: 0.5rem; font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  background: var(--bg);
  padding: 0 0.5rem;
}
.product-card:hover { border-color: var(--accent); }
.product-card-img {
  aspect-ratio: 1; background: var(--bg-alt); overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--rule-light);
}
.product-card-img img { max-height: 100%; object-fit: contain; }
.product-card-name { font-family: var(--font-heading); font-size: 0.9375rem; font-weight: 700; margin-bottom: 0.25rem; }
.product-card-price {
  font-size: 0.8125rem; font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.product-card-desc { font-size: 0.8125rem; color: var(--ink-secondary); line-height: 1.6; margin-bottom: 0.75rem; }
.product-card-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.625rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 0.5rem 1rem;
  background: var(--ink); color: #fff;
  transition: background var(--transition);
}
.product-card-cta:hover { background: var(--accent); }

/* Sources */
.sources { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); }
.sources h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.1em; margin-bottom: 1rem;
  color: var(--ink-muted);
}
.source-item {
  font-family: var(--font-mono);
  font-size: 0.75rem; color: var(--ink-muted);
  line-height: 1.7; margin-bottom: 0.35rem;
  padding-left: 1.5rem; position: relative;
}
.source-item .source-num { position: absolute; left: 0; font-weight: 700; color: var(--ink-faint); }
.source-item a { text-decoration: underline; text-underline-offset: 2px; }
.source-item a:hover { color: var(--accent); }

/* Breadcrumbs — path notation */
.breadcrumbs {
  padding: 0.75rem 0;
  font-size: 0.6875rem; font-weight: 500;
  color: var(--ink-faint);
  display: flex; gap: 0.5rem; align-items: center;
}
.breadcrumbs a { color: var(--ink-muted); transition: color var(--transition); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .sep { color: var(--ink-ghost); }

/* Related */
.related-section { padding: 3rem 0; margin-top: 3rem; border-top: 1px solid var(--rule); }

/* --- Newsletter — technical CTA --- */
.newsletter {
  background: var(--bg-dark);
  color: #fff;
  padding: clamp(2.5rem, 7vw, 4rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter::before {
  content: ''; position: absolute; inset: 0;
  background: var(--dot-grid);
  background-size: var(--dot-size) var(--dot-size);
  opacity: 0.04;
}
.newsletter > * { position: relative; }
.newsletter h2 { color: #fff; margin-bottom: 0.75rem; font-size: clamp(1.5rem, 3vw, 2rem); }
.newsletter .subtitle { color: rgba(255,255,255,0.5); margin: 0 auto 1.5rem; }
.newsletter-form { display: flex; gap: 0; max-width: 480px; margin: 0 auto; }
.newsletter-input {
  flex: 1; padding: 0.75rem 1.25rem;
  border: 1px solid rgba(255,255,255,0.2); border-right: none;
  background: rgba(255,255,255,0.05);
  color: #fff;
  font-family: var(--font-mono); font-size: 0.8125rem;
  outline: none; transition: border-color var(--transition);
}
.newsletter-input::placeholder { color: rgba(255,255,255,0.25); }
.newsletter-input:focus { border-color: var(--accent); }
.newsletter-submit {
  padding: 0.75rem 1.5rem;
  background: var(--accent); color: #fff;
  font-family: var(--font-mono);
  font-size: 0.6875rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  border: none; cursor: pointer;
  transition: background var(--transition);
}
.newsletter-submit:hover { background: var(--accent-dark); }

/* --- Footer --- */
.site-footer {
  background: var(--bg-darker);
  color: rgba(255,255,255,0.4);
  padding: 3rem 0 1.5rem;
}
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 2.5rem; margin-bottom: 2.5rem; }
.footer-brand .logo { color: #fff; margin-bottom: 0.75rem; }
.footer-brand p { font-size: 0.8125rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 {
  color: rgba(255,255,255,0.6);
  font-family: var(--font-mono);
  font-size: 0.625rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
}
.footer-col a { display: block; font-size: 0.8125rem; padding: 0.25rem 0; transition: color var(--transition); }
.footer-col a:hover { color: var(--accent); }
.footer-disclosure {
  font-size: 0.6875rem; line-height: 1.7;
  padding: 1.25rem 0; margin-top: 1.5rem;
  border-top: 1px solid var(--rule-dark);
}
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 1.25rem; border-top: 1px solid var(--rule-dark);
  font-family: var(--font-mono);
  font-size: 0.625rem; letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- Mobile Nav Overlay --- */
.mobile-nav {
  position: fixed; inset: 0; z-index: 3000;
  background: var(--bg);
  transform: translateX(100%); transition: transform 0.3s ease;
  overflow-y: auto; padding: 2rem;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav-close { position: absolute; top: 1.5rem; right: 1.5rem; font-size: 1.5rem; cursor: pointer; color: var(--ink-muted); }
.mobile-nav-sport { padding: 0.75rem 0; border-bottom: 1px solid var(--rule-light); }
.mobile-nav-sport a {
  font-family: var(--font-heading);
  font-size: 1.25rem; font-weight: 700;
  text-transform: uppercase;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .sport-grid { grid-template-columns: repeat(3, 1fr); }
  .sport-grid--featured { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .mega-grid { grid-template-columns: repeat(3, 1fr); }
  .sport-layout { grid-template-columns: 1fr; }
  .popular-sidebar { position: static; }
  .article-layout { grid-template-columns: 1fr; max-width: var(--content-width); }
  .article-toc { display: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-article { grid-template-columns: 1fr; }
  .featured-article-content { padding: 1.5rem; }
}
@media (max-width: 768px) {
  .sport-grid { grid-template-columns: repeat(2, 1fr); }
  .article-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .mega-menu { display: none !important; }
  .hero { min-height: 65vh; }
  .newsletter-form { flex-direction: column; gap: 0.5rem; }
  .newsletter-input { border-right: 1px solid rgba(255,255,255,0.2); }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .product-card { grid-template-columns: 90px 1fr; }
  .article-toc-mobile { display: block; margin-bottom: 2rem; }
  .toc-mobile-toggle {
    width: 100%; padding: 0.75rem 1rem;
    background: var(--bg-card); border: 1px solid var(--rule);
    font-family: var(--font-mono);
    font-size: 0.6875rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.06em; cursor: pointer; text-align: left; color: var(--ink-secondary);
  }
  .toc-mobile-body { display: none; padding: 0.75rem 1rem; background: var(--bg-card); border: 1px solid var(--rule); border-top: none; }
  .toc-mobile-body.open { display: block; }
}
@media (max-width: 480px) {
  .sport-grid { grid-template-columns: 1fr; }
  .sport-card { aspect-ratio: 16/9; }
}

/* --- Animations --- */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.fade-in-up { animation: fadeInUp 0.4s ease forwards; }


/* --- V3: New Sport Colors --- */
:root {
  --running: #e85d04;
  --lacrosse: #cf3b3b;
  --gym-fitness: #e63946;
  --outdoor: #588157;
}

/* --- V3: Sport Sub-Navigation --- */
.sport-subnav {
  background: var(--bg-card);
  border-bottom: 2px solid var(--sport-accent, var(--accent));
  padding: 0;
}
.sport-subnav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0.5rem 0;
}
.sport-subnav-name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
  text-decoration: none;
}
.sport-subnav-links {
  display: flex;
  gap: 0.25rem;
}
.sport-subnav-link {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.75rem;
  color: var(--ink-muted);
  border: 1px solid var(--rule);
  transition: all var(--transition);
}
.sport-subnav-link:hover {
  color: var(--ink);
  border-color: var(--ink-secondary);
}

/* --- V3: Nav item active/deals --- */
.nav-item--active {
  font-weight: 700 !important;
}
.nav-item--active::after {
  transform: scaleX(1) !important;
}
.nav-item--deals {
  color: var(--accent) !important;
}

/* --- V3: Mobile nav sections --- */
.mobile-nav-section {
  padding: 1.25rem 0 0.25rem;
}
.mobile-nav-label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
}

/* --- V3: Mega menu 6-col for 12 sports --- */
@media (min-width: 1024px) {
  .mega-grid { grid-template-columns: repeat(6, 1fr) !important; gap: 1.5rem !important; }
}

/* --- V3: Affiliate box styling --- */
.affiliate-box {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  font-size: 0.875rem;
}
.affiliate-box .product-name {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--ink);
}
.affiliate-box .product-price {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent);
  font-size: 0.8125rem;
}
.affiliate-box .product-program {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--ink-faint);
  margin-top: 0.25rem;
}

/* --- V3: Callout box styling for articles --- */
.callout-box {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink-secondary);
}
.callout-box.warning {
  border-left-color: #d4722c;
}
.callout-box strong {
  color: var(--ink);
}

/* --- V3: Article tables --- */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.875rem;
}
.article-content th, .article-content td {
  padding: 0.625rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--rule-light);
}
.article-content th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  border-bottom: 2px solid var(--rule);
}
.article-content td {
  color: var(--ink-secondary);
}