/*
Theme Name:  TekVu Premium
Theme URI:   https://www.tekvu.in/
Description: Premium custom WordPress theme for TekVu.in - Technology News, AI Tools, How-To Guides, Telecom. Full-width editorial design.
Version:     2.0.0
Author:      TekVu
Author URI:  https://www.tekvu.in/
License:     GPL v2 or later
Text Domain: tekvu
Tags:        technology, news, magazine, blog, full-width-template, custom-colors, custom-logo, custom-menu, featured-images
Requires at least: 6.4
Requires PHP: 8.0
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --white:         #FFFFFF;
  --black:         #0A0A0A;
  --gray-50:       #F7F8FA;
  --gray-100:      #F0F2F5;
  --gray-200:      #E4E7ED;
  --gray-300:      #D1D5DB;
  --gray-400:      #9CA3AF;
  --gray-500:      #6B7280;
  --gray-600:      #4B5563;
  --gray-700:      #374151;
  --gray-800:      #1F2937;
  --gray-900:      #111827;

  --blue-50:       #EFF6FF;
  --blue-100:      #DBEAFE;
  --blue-600:      #2563EB;
  --blue-700:      #1D4ED8;
  --blue-800:      #1E40AF;

  --red-50:        #FFF1F2;
  --red-500:       #EF4444;
  --red-600:       #DC2626;

  --green-50:      #F0FDF4;
  --green-500:     #22C55E;
  --green-600:     #16A34A;

  --orange-50:     #FFF7ED;
  --orange-500:    #F97316;

  --violet-50:     #F5F3FF;
  --violet-600:    #7C3AED;

  /* Brand */
  --primary:       #1A56DB;
  --primary-hover: #1648C8;
  --primary-light: #EBF1FF;

  /* Category accent colors */
  --cat-technews:  #1A56DB;
  --cat-ai:        #7C3AED;
  --cat-tips:      #059669;
  --cat-telecom:   #D97706;
  --cat-howto:     #DC2626;
  --cat-reviews:   #0891B2;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;

  /* Radii */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-xl:   16px;
  --r-2xl:  20px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.04);
  --shadow-xl: 0 24px 48px rgba(0,0,0,.12);

  /* Transitions */
  --ease: cubic-bezier(.4,0,.2,1);
  --t-fast:   150ms var(--ease);
  --t-normal: 250ms var(--ease);
  --t-slow:   400ms var(--ease);

  /* Layout */
  --max-w:      1320px;
  --content-w:  720px;
  --header-h:   60px;
}

/* Dark mode */
[data-theme="dark"] {
  --white:    #111318;
  --black:    #F1F5F9;
  --gray-50:  #1A1D23;
  --gray-100: #21262D;
  --gray-200: #2D333B;
  --gray-300: #3D444D;
  --gray-400: #545D6A;
  --gray-500: #768390;
  --gray-600: #9198A1;
  --gray-700: #ADBAC7;
  --gray-800: #CDD9E5;
  --gray-900: #E6EDF3;
  --primary-light: #162036;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,.5);
}

/* ============================================================
   RESET
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--gray-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background var(--t-normal), color var(--t-normal);
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: var(--r-sm); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  letter-spacing: -0.025em;
}
h1 { font-size: clamp(28px, 5vw, 48px); font-weight: 800; }
h2 { font-size: clamp(22px, 4vw, 36px); font-weight: 800; }
h3 { font-size: clamp(18px, 3vw, 28px); font-weight: 700; }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }
p  { color: var(--gray-600); line-height: 1.75; }

/* ============================================================
   LAYOUT
   ============================================================ */
.wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}
@media (max-width: 768px) { .wrap { padding-inline: var(--sp-4); } }

.section { padding-block: var(--sp-16); }
.section--sm { padding-block: var(--sp-10); }
.section--lg { padding-block: var(--sp-24); }

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: var(--sp-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--sp-5); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .grid-3 { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 600px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

/* ============================================================
   READING PROGRESS
   ============================================================ */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: var(--primary);
  z-index: 9999;
  transition: width 80ms linear;
}

/* ============================================================
   HEADER
   ============================================================ */
/* ── MASTHEAD AD (sits above header, never overlaps nav) ──────── */
.masthead-ad {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 8px var(--sp-4);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  min-height: 50px;
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  /* NO fixed height — height is always exactly the nav bar height */
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--gray-200);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--t-normal), border-color var(--t-normal), box-shadow var(--t-normal);
}
[data-theme="dark"] .site-header { background: rgba(17,19,24,.95); }
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-h); /* always 60px regardless of ad above */
  gap: var(--sp-8);
}

/* Logo */
.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.04em;
  line-height: 1;
}
.site-logo img { height: 32px; width: auto; }
.site-logo__dot { color: var(--primary); }

/* Primary nav */
.nav-primary {
  flex: 1;
  display: flex;
  justify-content: center;
}
.nav-primary__list {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}
.nav-primary__item { position: relative; }
.nav-primary__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px var(--sp-3);
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--r-md);
  transition: color var(--t-fast), background var(--t-fast);
  white-space: nowrap;
}
.nav-primary__link:hover,
.nav-primary__link[aria-current] {
  color: var(--primary);
  background: var(--primary-light);
}

/* Dropdown */
.nav-primary__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-2);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  z-index: 100;
}
.nav-primary__item:hover .nav-primary__dropdown,
.nav-primary__item:focus-within .nav-primary__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-primary__dropdown a {
  display: block;
  padding: 8px var(--sp-3);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  border-radius: var(--r-md);
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-primary__dropdown a:hover { color: var(--primary); background: var(--primary-light); }

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}
.header-btn {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-full);
  color: var(--gray-500);
  transition: color var(--t-fast), background var(--t-fast);
}
.header-btn:hover { color: var(--gray-900); background: var(--gray-100); }
.menu-toggle { display: none; }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 300;
  padding: var(--sp-6);
  overflow-y: auto;
}
.mobile-nav.is-open { display: block; }
.mobile-nav__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-8);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid var(--gray-200);
}
.mobile-nav__close {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-full);
  color: var(--gray-600);
  background: var(--gray-100);
}
.mobile-nav__list { display: flex; flex-direction: column; }
.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--gray-800);
  border-bottom: 1px solid var(--gray-100);
  transition: color var(--t-fast);
}
.mobile-nav__link:hover { color: var(--primary); }

/* Search overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(4px);
  z-index: 400;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  padding-inline: var(--sp-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-normal), visibility var(--t-normal);
}
.search-overlay.is-open { opacity: 1; visibility: visible; }
.search-box {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: var(--sp-5);
  width: 100%;
  max-width: 600px;
  box-shadow: var(--shadow-xl);
}
.search-form {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  border: 1.5px solid var(--gray-300);
  border-radius: var(--r-lg);
  padding: 10px var(--sp-4);
  transition: border-color var(--t-fast);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form svg { color: var(--gray-400); flex-shrink: 0; }
.search-input {
  flex: 1;
  font-size: 16px;
  color: var(--gray-900);
  background: transparent;
  border: none;
  outline: none;
}
.search-input::placeholder { color: var(--gray-400); }
.search-close { color: var(--gray-400); transition: color var(--t-fast); }
.search-close:hover { color: var(--gray-900); }
.search-trends {
  margin-top: var(--sp-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
}
.search-trends__label { font-size: 12px; font-weight: 600; color: var(--gray-400); text-transform: uppercase; letter-spacing: .06em; }
.search-tag {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-600);
  transition: all var(--t-fast);
}
.search-tag:hover { background: var(--primary); color: #fff; }
.search-suggestions { margin-top: var(--sp-3); }
.search-suggestions a {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 10px var(--sp-3);
  border-radius: var(--r-md);
  transition: background var(--t-fast);
}
.search-suggestions a:hover { background: var(--gray-50); }
.search-suggestions img { width: 48px; height: 36px; object-fit: cover; border-radius: var(--r-sm); flex-shrink: 0; }
.search-suggestions__title { font-size: 14px; font-weight: 600; color: var(--gray-800); }
.search-suggestions__cat { font-size: 12px; font-weight: 600; color: var(--primary); margin-top: 2px; }

@media (max-width: 1024px) {
  .nav-primary { display: none; }
  .menu-toggle { display: flex; }
}

/* ============================================================
   CATEGORY LABEL / BADGE
   ============================================================ */
.cat-label {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  background: var(--primary-light);
  color: var(--primary);
}
.cat-label--ai       { background: var(--violet-50); color: var(--violet-600); }
.cat-label--tips     { background: var(--green-50);  color: var(--green-600);  }
.cat-label--telecom  { background: var(--orange-50); color: var(--orange-500); }
.cat-label--howto    { background: var(--red-50);    color: var(--red-600);    }
.cat-label--reviews  { background: #F0F9FF; color: var(--cat-reviews);         }

/* ============================================================
   POST CARDS
   ============================================================ */

/* Standard card */
.card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--r-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: transform var(--t-normal), box-shadow var(--t-normal), border-color var(--t-normal);
  height: 100%;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--gray-300); }

.card__img {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
  flex-shrink: 0;
}
.card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}
.card:hover .card__img img { transform: scale(1.04); }
.card__img-badge {
  position: absolute;
  top: var(--sp-3);
  left: var(--sp-3);
}

.card__body {
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  flex: 1;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.card__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--gray-400);
  font-weight: 500;
}
.card__meta-item svg { flex-shrink: 0; }

.card__title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--gray-900);
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--t-fast);
}
.card__title:hover { color: var(--primary); }
.card__title a:hover { color: var(--primary); }

.card__excerpt {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__author {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: auto;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--gray-100);
}
.card__author img {
  width: 24px; height: 24px;
  border-radius: var(--r-full);
  object-fit: cover;
  background: var(--gray-200);
}
.card__author-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
}
.card__author-name a:hover { color: var(--primary); }

/* Hero card — full width */
.card--hero {
  flex-direction: row;
  border-radius: var(--r-xl);
}
.card--hero .card__img {
  flex: 0 0 55%;
  aspect-ratio: auto;
  min-height: 380px;
}
.card--hero .card__body {
  padding: var(--sp-8) var(--sp-10);
  justify-content: center;
  gap: var(--sp-4);
}
.card--hero .card__title {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  -webkit-line-clamp: 4;
  letter-spacing: -0.025em;
}
.card--hero .card__excerpt { -webkit-line-clamp: 3; font-size: 15px; }

@media (max-width: 900px) {
  .card--hero { flex-direction: column; }
  .card--hero .card__img { min-height: 220px; aspect-ratio: 16/9; flex: none; }
  .card--hero .card__body { padding: var(--sp-5); }
  .card--hero .card__title { font-size: 20px; }
}

/* Horizontal card */
.card--h {
  flex-direction: row;
  align-items: stretch;
  border-radius: var(--r-lg);
}
.card--h .card__img {
  flex: 0 0 120px;
  aspect-ratio: auto;
  min-height: 90px;
}
.card--h .card__body { padding: var(--sp-3) var(--sp-4); gap: var(--sp-2); }
.card--h .card__title { font-size: 14px; -webkit-line-clamp: 3; }
.card--h .card__meta { gap: var(--sp-2); }
.card--h .card__author { padding-top: var(--sp-2); }

/* Numbered card */
.card--num {
  flex-direction: row;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4);
  border-radius: var(--r-lg);
}
.card--num:hover { transform: none; box-shadow: var(--shadow-sm); }
.card--num .card__num {
  font-size: 36px;
  font-weight: 900;
  color: var(--gray-200);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  min-width: 2ch;
  text-align: center;
  flex-shrink: 0;
}
.card--num .card__img {
  flex: 0 0 80px;
  border-radius: var(--r-md);
  aspect-ratio: 1;
}
.card--num .card__body { padding: 0; gap: var(--sp-1); }
.card--num .card__title { font-size: 14px; font-weight: 600; -webkit-line-clamp: 2; }
.card--num .card__author { display: none; }

/* ============================================================
   SECTION HEADER
   ============================================================ */
.sec-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-8);
  padding-bottom: var(--sp-5);
  border-bottom: 1px solid var(--gray-200);
}
.sec-head__left {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.sec-head__bar {
  width: 3px;
  height: 24px;
  border-radius: var(--r-full);
  background: var(--primary);
  flex-shrink: 0;
}
.sec-head__title {
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.025em;
}
.sec-head__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--t-fast), opacity var(--t-fast);
}
.sec-head__link:hover { gap: 8px; opacity: .8; }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-wrap {
  padding-block: var(--sp-8);
  border-bottom: 1px solid var(--gray-100);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--sp-6);
  align-items: start;
}
.hero-sidebar { display: flex; flex-direction: column; gap: var(--sp-4); }
.hero-sidebar__label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-400);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--gray-200);
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .hero-sidebar__label { display: none; }
}
@media (max-width: 600px) {
  .hero-sidebar { grid-template-columns: 1fr; }
}

/* ============================================================
   TRENDING SECTION
   ============================================================ */
/* ── SECTION ALTERNATING BG ──────────────────────────────────── */
.section-alt {
  background: var(--gray-50);
  border-block: 1px solid var(--gray-200);
}

/* Telecom section */
.section-telecom {
  background: var(--white);
}

/* Hidden telecom cards (tab filter) */
.telecom-card-wrap[style*="display:none"],
.telecom-card-wrap[hidden] {
  display: none !important;
}

/* Hero CTA button spacing */
.hero-cta { margin-top: auto; padding-top: var(--sp-5); }

/* Hero title and excerpt clamp */
.hero-title {
  font-size: clamp(20px, 2.5vw, 30px) !important;
  -webkit-line-clamp: 5 !important;
}
.hero-excerpt { -webkit-line-clamp: 3 !important; }

/* Section CTA centred button */
.section-cta { text-align: center; margin-top: var(--sp-8); }

/* Ad slots */
.ad-slot { display: flex; justify-content: center; }
.ad-slot--leaderboard { margin-bottom: var(--sp-8); }
.ad-slot--footer { padding: var(--sp-8); background: var(--white); }

/* ============================================================
   AI TOOLS SECTION
   ============================================================ */
.ai-wrap { background: var(--gray-50); border-block: 1px solid var(--gray-200); }

.tool-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-xl);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition: transform var(--t-normal), box-shadow var(--t-normal);
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.tool-card__header { display: flex; align-items: center; gap: var(--sp-3); }
.tool-card__icon {
  width: 44px; height: 44px;
  border-radius: var(--r-lg);
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.tool-card__icon svg { color: var(--primary); }
.tool-card__name { font-size: 15px; font-weight: 700; color: var(--gray-900); }
.tool-card__pricing {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: var(--green-50);
  color: var(--green-600);
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  margin-top: 2px;
}
.tool-card__pricing--paid { background: var(--orange-50); color: var(--orange-500); }
.tool-card__pricing--freemium { background: var(--violet-50); color: var(--violet-600); }

.tool-card__desc {
  font-size: 13px;
  color: var(--gray-500);
  line-height: 1.6;
  flex: 1;
}
.tool-card__tags { display: flex; flex-wrap: wrap; gap: var(--sp-1); }
.tool-tag {
  padding: 2px 8px;
  background: var(--gray-100);
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-600);
}
.tool-card__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
  transition: gap var(--t-fast);
}
.tool-card__link:hover { gap: 8px; }

/* ============================================================
   REVIEW CARDS
   ============================================================ */
.review-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: transform var(--t-normal), box-shadow var(--t-normal);
  display: flex;
  flex-direction: column;
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.review-card__img { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--gray-100); }
.review-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.review-card:hover .review-card__img img { transform: scale(1.04); }

.review-card__score {
  position: absolute;
  bottom: var(--sp-3);
  right: var(--sp-3);
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(4px);
  border-radius: var(--r-full);
  padding: 4px 10px;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 700;
  color: #FBBF24;
}

.review-card__body { padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-3); flex: 1; }
.review-card__title { font-size: 15px; font-weight: 700; color: var(--gray-900); line-height: 1.4; }

.verdict { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-2); }
.verdict-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-600);
  line-height: 1.4;
}
.verdict-item--pro .vi-icon { color: var(--green-500); flex-shrink: 0; margin-top: 1px; }
.verdict-item--con .vi-icon { color: var(--red-500); flex-shrink: 0; margin-top: 1px; }

/* ============================================================
   HOW-TO CARDS
   ============================================================ */
.guide-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t-normal), box-shadow var(--t-normal);
}
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.guide-card__img { aspect-ratio: 16/9; overflow: hidden; background: var(--gray-100); position: relative; }
.guide-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.guide-card:hover .guide-card__img img { transform: scale(1.04); }
.guide-card__body { padding: var(--sp-4); display: flex; flex-direction: column; gap: var(--sp-3); flex: 1; }
.guide-card__meta { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.guide-card__title { font-size: 15px; font-weight: 700; color: var(--gray-900); line-height: 1.4; }

.diff-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.diff-badge--easy   { background: var(--green-50); color: var(--green-600); }
.diff-badge--medium { background: var(--orange-50); color: var(--orange-500); }
.diff-badge--hard   { background: var(--red-50); color: var(--red-600); }

.guide-time { font-size: 12px; color: var(--gray-400); display: flex; align-items: center; gap: 4px; }

/* ============================================================
   TELECOM SECTION
   ============================================================ */
.telecom-wrap { background: var(--gray-50); border-block: 1px solid var(--gray-200); }
.telecom-tabs { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-bottom: var(--sp-6); }
.tab-btn {
  padding: 6px 16px;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  transition: all var(--t-fast);
  cursor: pointer;
}
.tab-btn.is-active,
.tab-btn:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }
/* .telecom-grid now uses .grid-4 class (unified layout) */
/* Telecom tab filter hides cards via JS data-ops attribute */
#telecom-grid .telecom-card-wrap { display: block; }

/* ============================================================
   POPULAR THIS WEEK
   ============================================================ */
/* .popular-grid now uses .grid-4 class (unified layout) */

/* ============================================================
   NEWSLETTER
   ============================================================ */
.nl-section {
  background: var(--gray-900);
  color: #fff;
  padding-block: var(--sp-20);
  text-align: center;
}
.nl-section h2 {
  color: #fff;
  font-size: clamp(26px,4vw,40px);
  font-weight: 800;
  margin-bottom: var(--sp-4);
  letter-spacing: -0.03em;
}
.nl-section p {
  color: rgba(255,255,255,.6);
  font-size: 16px;
  margin-bottom: var(--sp-8);
  max-width: 480px;
  margin-inline: auto;
}
.nl-form {
  display: flex;
  gap: var(--sp-3);
  max-width: 460px;
  margin-inline: auto;
}
.nl-input {
  flex: 1;
  padding: 12px 18px;
  border: 1.5px solid rgba(255,255,255,.15);
  border-radius: var(--r-lg);
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 15px;
  transition: border-color var(--t-fast);
}
.nl-input::placeholder { color: rgba(255,255,255,.35); }
.nl-input:focus { outline: none; border-color: var(--primary); }
.nl-btn {
  padding: 12px 24px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--r-lg);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: background var(--t-fast), transform var(--t-fast);
}
.nl-btn:hover { background: var(--primary-hover); transform: translateY(-1px); }
.nl-note { margin-top: var(--sp-4); font-size: 12px; color: rgba(255,255,255,.3); }
@media (max-width: 500px) { .nl-form { flex-direction: column; } .nl-btn { width: 100%; } }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--gray-900);
  color: rgba(255,255,255,.55);
  padding-top: var(--sp-16);
}
.footer-grid {
  display: grid;
  grid-template-columns: 260px repeat(4,1fr);
  gap: var(--sp-8);
  padding-bottom: var(--sp-12);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand { grid-column: 1; }
.footer-brand__logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.04em;
  margin-bottom: var(--sp-4);
  display: block;
}
.footer-brand__about {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,.45);
  margin-bottom: var(--sp-5);
}
.footer-social { display: flex; gap: var(--sp-2); }
.social-link {
  width: 34px; height: 34px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,.07);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.5);
  transition: background var(--t-fast), color var(--t-fast);
}
.social-link:hover { background: var(--primary); color: #fff; }

.footer-col__title {
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: var(--sp-4);
}
.footer-col__list { display: flex; flex-direction: column; gap: var(--sp-3); }
.footer-col__link {
  font-size: 13px;
  color: rgba(255,255,255,.45);
  transition: color var(--t-fast);
}
.footer-col__link:hover { color: rgba(255,255,255,.85); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--sp-5);
  font-size: 12px;
  color: rgba(255,255,255,.3);
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.footer-bottom-links { display: flex; gap: var(--sp-5); }
.footer-bottom-links a { color: rgba(255,255,255,.3); transition: color var(--t-fast); }
.footer-bottom-links a:hover { color: rgba(255,255,255,.65); }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: repeat(2,1fr); }
  .footer-brand { grid-column: 1/-1; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  padding: 10px 22px;
  border-radius: var(--r-lg);
  font-size: 14px; font-weight: 700;
  transition: all var(--t-fast);
  cursor: pointer;
  border: 1.5px solid transparent;
  white-space: nowrap;
}
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(26,86,219,.3); }
.btn--outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn--outline:hover { background: var(--primary); color: #fff; }
.btn--ghost { background: transparent; color: var(--gray-600); }
.btn--ghost:hover { background: var(--gray-100); color: var(--gray-900); }
.btn--sm { padding: 7px 16px; font-size: 13px; }
.btn--lg { padding: 13px 28px; font-size: 15px; border-radius: var(--r-xl); }

/* ============================================================
   SINGLE ARTICLE
   ============================================================ */
.article-header {
  max-width: 1100px;
  margin-inline: auto;
  padding: var(--sp-10) var(--sp-6) 0;
  text-align: center;
}
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--primary); font-weight: 500; }
.breadcrumb__sep { color: var(--gray-300); }

.article-header__cats { margin-bottom: var(--sp-4); display: flex; justify-content: center; }
.article-title {
  font-size: clamp(26px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--gray-900);
  margin-bottom: var(--sp-5);
  max-width: 880px;
  margin-inline: auto;
}
.article-subtitle {
  font-size: 18px;
  color: var(--gray-500);
  line-height: 1.6;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--sp-6);
}
.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-5);
  flex-wrap: wrap;
  margin-bottom: var(--sp-8);
}
.article-author {
  display: flex; align-items: center; gap: var(--sp-2);
}
.article-author img {
  width: 38px; height: 38px;
  border-radius: var(--r-full);
  object-fit: cover;
  border: 2px solid var(--gray-200);
}
.article-author__name { font-size: 14px; font-weight: 600; color: var(--gray-800); }
.article-author__role { font-size: 12px; color: var(--gray-400); }
.meta-divider { width: 1px; height: 30px; background: var(--gray-200); }
.meta-stat {
  display: flex; align-items: center; gap: 5px;
  font-size: 13px; color: var(--gray-400); font-weight: 500;
}

.article-hero-img {
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: var(--sp-6);
  margin-bottom: var(--sp-10);
}
.article-hero-img img {
  width: 100%;
  border-radius: var(--r-xl);
  aspect-ratio: 16/7;
  object-fit: cover;
}

/* Article layout: TOC | content | share */
.article-layout {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--sp-6);
  display: grid;
  grid-template-columns: 200px minmax(0, var(--content-w)) 60px;
  gap: var(--sp-10);
  justify-content: center;
}
.article-toc-col   { grid-column: 1; }
.article-body      { grid-column: 2; }
.article-share-col { grid-column: 3; }

/* When TOC is empty (article has < 2 headings):
   collapse the column to 0 width so no blank gap appears */
.article-toc-col--empty {
  display: none;
}
/* Shift content to column 1 when TOC is hidden */
.article-layout:has(.article-toc-col--empty) {
  grid-template-columns: minmax(0, var(--content-w)) 60px;
}
.article-layout:has(.article-toc-col--empty) .article-body {
  grid-column: 1;
}
.article-layout:has(.article-toc-col--empty) .article-share-col {
  grid-column: 2;
}

/* Fallback for browsers without :has() support (Firefox < 121, older Safari) */
@supports not selector(:has(*)) {
  .article-toc-col--empty {
    width: 0;
    padding: 0;
    overflow: hidden;
    min-width: 0;
  }
}

/* TOC */
.toc {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-200) transparent;
  padding: var(--sp-4);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-lg);
  font-family: var(--font-sans);
}
.toc::-webkit-scrollbar { width: 3px; }
.toc::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }

.toc__title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--gray-400);
  margin-bottom: var(--sp-3);
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.toc__title::before {
  content: '';
  display: block;
  width: 3px;
  height: 12px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
}
.toc__list {
  display: flex;
  flex-direction: column;
  gap: 1px;
  counter-reset: toc-counter;
}
.toc__item a {
  display: block;
  padding: 6px var(--sp-3);
  font-size: 12px;
  font-weight: 500;
  color: var(--gray-500);
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
  line-height: 1.45;
  text-decoration: none;
}
.toc__item a:hover {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-light);
}
.toc__item.is-active a {
  color: var(--primary);
  border-left-color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
/* h3 items indented */
.toc__item--h3 a {
  padding-left: calc(var(--sp-3) + 14px);
  font-size: 11px;
  color: var(--gray-400);
}
.toc__item--h3.is-active a,
.toc__item--h3 a:hover { color: var(--primary); }

/* Share sidebar */
.article-share {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
}
.share-btn {
  width: 40px; height: 40px;
  border-radius: var(--r-full);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--gray-200);
  color: var(--gray-500);
  background: var(--white);
  transition: all var(--t-fast);
  box-shadow: var(--shadow-xs);
}
.share-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.share-btn--tw:hover  { background: #1DA1F2; color: #fff; border-color: #1DA1F2; }
.share-btn--fb:hover  { background: #1877F2; color: #fff; border-color: #1877F2; }
.share-btn--wa:hover  { background: #25D366; color: #fff; border-color: #25D366; }
.share-btn--copy:hover{ background: var(--primary); color: #fff; border-color: var(--primary); }
.share-label { font-size: 10px; color: var(--gray-400); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }

/* Article body typography */
.prose {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.85;
  color: var(--gray-700);
}
.prose h2 {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 800;
  color: var(--gray-900);
  margin-top: var(--sp-12);
  margin-bottom: var(--sp-5);
  letter-spacing: -0.025em;
  scroll-margin-top: 80px;
}
.prose h3 {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-900);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-4);
  scroll-margin-top: 80px;
}
.prose p { margin-bottom: var(--sp-5); }
.prose a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--primary-hover); }
.prose ul { list-style: disc; padding-left: var(--sp-6); margin-bottom: var(--sp-5); }
.prose ol { list-style: decimal; padding-left: var(--sp-6); margin-bottom: var(--sp-5); }
.prose li { margin-bottom: var(--sp-2); line-height: 1.75; }
.prose blockquote {
  border-left: 3px solid var(--primary);
  padding: var(--sp-4) var(--sp-6);
  background: var(--primary-light);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  margin: var(--sp-6) 0;
  font-style: italic;
}
.prose code {
  font-family: var(--font-mono);
  font-size: .875em;
  background: var(--gray-100);
  padding: 2px 6px;
  border-radius: var(--r-sm);
  color: var(--red-600);
}
.prose pre {
  background: var(--gray-900);
  color: #e2e8f0;
  padding: var(--sp-5);
  border-radius: var(--r-lg);
  overflow-x: auto;
  margin: var(--sp-6) 0;
}
.prose pre code { background: transparent; color: inherit; padding: 0; }
.prose img { border-radius: var(--r-lg); margin: var(--sp-6) auto; }
.prose table { margin: var(--sp-6) 0; border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--gray-200); font-size: 15px; }
.prose th { background: var(--gray-100); padding: var(--sp-3) var(--sp-4); font-weight: 700; text-align: left; }
.prose td { padding: var(--sp-3) var(--sp-4); border-top: 1px solid var(--gray-100); }
.prose tr:nth-child(even) td { background: var(--gray-50); }
.prose strong { font-weight: 700; color: var(--gray-800); }

/* Inline CTA */
.inline-cta {
  background: var(--primary-light);
  border: 1px solid rgba(26,86,219,.15);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
  margin: var(--sp-8) 0;
  text-align: center;
}
.inline-cta h3 { font-family: var(--font-sans); font-size: 20px; font-weight: 800; color: var(--gray-900); margin-bottom: var(--sp-2); }
.inline-cta p  { font-family: var(--font-sans); font-size: 14px; color: var(--gray-600); margin-bottom: var(--sp-4); }

/* FAQ */
.faq-section { margin: var(--sp-10) 0; }
.faq-title { font-family: var(--font-sans); font-size: 22px; font-weight: 800; margin-bottom: var(--sp-5); color: var(--gray-900); }
.faq-item { border: 1px solid var(--gray-200); border-radius: var(--r-lg); margin-bottom: var(--sp-3); overflow: hidden; }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-4) var(--sp-5);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-900);
  background: var(--white);
  transition: background var(--t-fast);
  user-select: none;
  list-style: none;
}
.faq-q:hover { background: var(--gray-50); }
.faq-q svg { flex-shrink: 0; transition: transform var(--t-fast); }
.faq-item[open] .faq-q svg { transform: rotate(180deg); }
.faq-a {
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--gray-100);
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.7;
}

/* Author box */
.author-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--r-xl);
  padding: var(--sp-6);
  display: flex;
  gap: var(--sp-5);
  margin: var(--sp-10) 0;
}
.author-box img {
  width: 68px; height: 68px;
  border-radius: var(--r-full);
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--white);
  box-shadow: var(--shadow-sm);
}
.author-box__name { font-size: 17px; font-weight: 800; color: var(--gray-900); margin-bottom: 2px; }
.author-box__role { font-size: 13px; color: var(--primary); font-weight: 600; margin-bottom: var(--sp-3); }
.author-box__bio  { font-size: 14px; color: var(--gray-500); line-height: 1.65; }

/* Related posts */
.related { margin-top: var(--sp-12); padding-top: var(--sp-10); border-top: 2px solid var(--gray-100); }
.related__title { font-size: 22px; font-weight: 800; margin-bottom: var(--sp-6); color: var(--gray-900); letter-spacing: -0.025em; }
.related__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-5); }
@media (max-width: 768px) { .related__grid { grid-template-columns: 1fr; } }

/* Article layout responsive */
@media (max-width: 1200px) {
  .article-layout { grid-template-columns: 180px minmax(0, var(--content-w)) 56px; }
}
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-body { grid-column: 1; }
  .article-toc-col, .article-share-col { display: none; }
}

/* ============================================================
   CATEGORY / ARCHIVE PAGE
   ============================================================ */
.cat-hero {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: #fff;
  padding: var(--sp-16) 0;
  text-align: center;
}
.cat-hero__title { font-size: clamp(28px,6vw,52px); font-weight: 900; color: #fff; margin-bottom: var(--sp-3); letter-spacing: -0.04em; }
.cat-hero__desc  { color: rgba(255,255,255,.55); font-size: 16px; max-width: 520px; margin-inline: auto; margin-bottom: var(--sp-4); }
.cat-hero__count { font-size: 13px; color: rgba(255,255,255,.35); font-weight: 500; }

.filter-bar { display: flex; gap: var(--sp-2); margin-bottom: var(--sp-8); flex-wrap: wrap; }
.filter-btn {
  padding: 6px 16px;
  border-radius: var(--r-full);
  font-size: 13px;
  font-weight: 600;
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-600);
  transition: all var(--t-fast);
  cursor: pointer;
}
.filter-btn.is-active,
.filter-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.archive-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--sp-6); }
@media (max-width: 1024px) { .archive-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px)  { .archive-grid { grid-template-columns: 1fr; } }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: var(--sp-2); margin-top: var(--sp-12); flex-wrap: wrap; }
.page-num {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md);
  font-size: 14px; font-weight: 600;
  border: 1px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-600);
  transition: all var(--t-fast);
}
.page-num:hover, .page-num.is-active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── BOTTOM NAV REMOVED per design requirement ──────────────── */
/* Mobile users use the full-screen hamburger menu instead   */

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -50px;
  left: var(--sp-4);
  padding: 8px 16px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  z-index: 9999;
  transition: top var(--t-fast);
}
.skip-link:focus { top: var(--sp-4); }

/* ============================================================
   AD UNITS
   ============================================================ */
.ad-unit {
  background: var(--gray-50);
  border: 1px dashed var(--gray-200);
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-300);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.ad-unit--banner      { height: 90px; }
.ad-unit--in-content  { height: 280px; margin: var(--sp-8) auto; }

/* ============================================================
   UTILITIES
   ============================================================ */
.text-primary { color: var(--primary); }
.divider { height: 1px; background: var(--gray-200); margin-block: var(--sp-8); }

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
  background-size: 400% 100%;
  animation: sk 1.4s ease infinite;
  border-radius: var(--r-md);
}
@keyframes sk {
  0%   { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp .4s var(--ease) both; }

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .site-header, .site-footer, .masthead-ad, .article-share-col,
  .article-toc-col, .related, .nl-section { display: none !important; }
  .article-layout { grid-template-columns: 1fr; }
  .article-body { grid-column: 1; }
}