/* =========================================
   SmartBuy HK 精明消費 — Design System & Styles
   ========================================= */

/* --- Design Tokens --- */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Brand Colors — SmartBuy HK */
  --color-primary:        #1a365d;
  --color-primary-hover:  #2a4a7f;
  --color-primary-active: #0f2440;
  --color-primary-light:  #e8edf5;

  --color-accent:         #ed8936;
  --color-accent-hover:   #dd6b20;
  --color-accent-active:  #c05621;
  --color-accent-light:   #fef3e5;

  --color-bg:             #ffffff;
  --color-surface:        #f7fafc;
  --color-surface-2:      #edf2f7;
  --color-border:         #e2e8f0;
  --color-divider:        #e2e8f0;

  --color-text:           #1a202c;
  --color-text-muted:     #718096;
  --color-text-faint:     #a0aec0;
  --color-text-inverse:   #ffffff;

  --color-success:        #38a169;
  --color-warning:        #d69e2e;
  --color-error:          #e53e3e;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);

  /* Content widths */
  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1280px;

  /* Fonts */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang HK", "Microsoft JhengHei", sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang HK", "Microsoft JhengHei", sans-serif;
}

/* Dark mode */
[data-theme="dark"] {
  --color-primary:        #63b3ed;
  --color-primary-hover:  #90cdf4;
  --color-primary-active: #4299e1;
  --color-primary-light:  #1a2332;

  --color-accent:         #ed8936;
  --color-accent-hover:   #f6ad55;
  --color-accent-active:  #dd6b20;
  --color-accent-light:   #2d2215;

  --color-bg:             #0f1419;
  --color-surface:        #171e26;
  --color-surface-2:      #1e2730;
  --color-border:         #2d3748;
  --color-divider:        #2d3748;

  --color-text:           #e2e8f0;
  --color-text-muted:     #a0aec0;
  --color-text-faint:     #718096;
  --color-text-inverse:   #1a202c;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-primary:        #63b3ed;
    --color-primary-hover:  #90cdf4;
    --color-primary-active: #4299e1;
    --color-primary-light:  #1a2332;
    --color-accent:         #ed8936;
    --color-accent-hover:   #f6ad55;
    --color-accent-active:  #dd6b20;
    --color-accent-light:   #2d2215;
    --color-bg:             #0f1419;
    --color-surface:        #171e26;
    --color-surface-2:      #1e2730;
    --color-border:         #2d3748;
    --color-divider:        #2d3748;
    --color-text:           #e2e8f0;
    --color-text-muted:     #a0aec0;
    --color-text-faint:     #718096;
    --color-text-inverse:   #1a202c;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.4);
  }
}


/* =========================================
   LAYOUT
   ========================================= */

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--default {
  max-width: var(--content-default);
}

/* =========================================
   HEADER / NAV
   ========================================= */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}

[data-theme="dark"] .header,
:root:not([data-theme]) .header {
  background: rgba(15,20,25,0.92);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .header {
    background: rgba(15,20,25,0.92);
  }
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.logo__icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo__text {
  font-weight: 700;
  font-size: var(--text-sm);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.logo__text span {
  display: block;
  font-size: 0.7em;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* Desktop nav */
.nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .nav { display: flex; }
}

.nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  white-space: nowrap;
}

.nav__link:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav__link--active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Category bar */
.cat-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.cat-bar::-webkit-scrollbar { display: none; }

.cat-bar__inner {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding-block: var(--space-2);
  white-space: nowrap;
}

.cat-bar__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  white-space: nowrap;
}

.cat-bar__link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.cat-bar__link--active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* Header actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}

.theme-toggle:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

/* Mobile menu button */
.menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text);
}

.menu-btn:hover {
  background: var(--color-surface);
}

@media (min-width: 768px) {
  .menu-btn { display: none; }
}

/* Mobile nav overlay */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 200;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-nav.is-open {
  transform: translateX(0);
}

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
}

.mobile-nav__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-md);
}

.mobile-nav__link:hover,
.mobile-nav__link:active {
  background: var(--color-surface);
}

/* =========================================
   HERO
   ========================================= */

.hero {
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 50%, #1a365d 100%);
  color: #ffffff;
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(237, 137, 54, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(99, 179, 237, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  margin-bottom: var(--space-6);
  color: rgba(255,255,255,0.9);
}

.hero__title {
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__desc {
  font-size: var(--text-base);
  line-height: 1.7;
  max-width: 600px;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--space-8);
}

.hero__cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* =========================================
   BUTTONS
   ========================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  min-height: 44px;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(237, 137, 54, 0.3);
}

.btn--secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
.btn--secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
}
.btn--accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(237, 137, 54, 0.3);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  min-height: 36px;
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* =========================================
   SECTIONS
   ========================================= */

.section {
  padding: clamp(var(--space-10), 6vw, var(--space-20)) 0;
}

.section--surface {
  background: var(--color-surface);
}

.section__header {
  margin-bottom: var(--space-8);
}

.section__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.section__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.section__title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.section__more {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.section__more:hover {
  color: var(--color-accent);
}

/* =========================================
   ARTICLE CARDS
   ========================================= */

.card-grid {
  display: grid;
  gap: var(--space-6);
}

.card-grid--2 {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
}

.card-grid--3 {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.card-grid--4 {
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .card-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card__img {
  aspect-ratio: 16/10;
  background: var(--color-surface-2);
  overflow: hidden;
  position: relative;
}

.card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-2) 100%);
  color: var(--color-text-faint);
  font-size: var(--text-xl);
}

.card__body {
  padding: var(--space-5);
}

.card__tag {
  display: inline-block;
  padding: 2px var(--space-2);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.card__title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: var(--space-2);
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.card__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* Featured card (large) */
.card--featured {
  grid-column: 1 / -1;
}

@media (min-width: 768px) {
  .card--featured {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
  }

  .card--featured .card__img {
    aspect-ratio: auto;
    min-height: 300px;
  }

  .card--featured .card__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-8);
  }

  .card--featured .card__title {
    font-size: var(--text-lg);
  }

  .card--featured .card__excerpt {
    -webkit-line-clamp: 3;
  }
}

/* List card (horizontal small) */
.list-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
}

.list-card:last-child {
  border-bottom: none;
}

.list-card:hover .list-card__title {
  color: var(--color-primary);
}

.list-card__img {
  width: 100px;
  height: 72px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-surface-2);
}

.list-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.list-card__body {
  flex: 1;
  min-width: 0;
}

.list-card__tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.list-card__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: var(--space-1);
  transition: color 0.15s ease;
}

.list-card__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* =========================================
   SIDEBAR
   ========================================= */

.main-grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

@media (min-width: 960px) {
  .main-grid {
    grid-template-columns: 1fr 320px;
  }
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

@media (min-width: 960px) {
  .sidebar {
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}

.sidebar-widget__title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-accent);
}

/* Newsletter */
.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.newsletter-form input[type="email"] {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-bg);
}

.newsletter-form input[type="email"]:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

/* Popular articles in sidebar */
.popular-list {
  list-style: none;
  counter-reset: popular;
}

.popular-list li {
  counter-increment: popular;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.popular-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.popular-list li a {
  display: flex;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.4;
}

.popular-list li a::before {
  content: counter(popular, decimal-leading-zero);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-text-faint);
  flex-shrink: 0;
  line-height: 1;
  min-width: 1.8em;
}

.popular-list li a:hover {
  color: var(--color-primary);
}

/* =========================================
   AD PLACEHOLDER
   ========================================= */

.ad-placeholder {
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* =========================================
   FOOTER
   ========================================= */

.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.85);
  padding: clamp(var(--space-10), 6vw, var(--space-16)) 0 var(--space-8);
}

[data-theme="dark"] .footer {
  background: #0a0f14;
}

.footer__grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-10);
}

@media (min-width: 640px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer__brand-desc {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-top: var(--space-3);
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: #fff;
}

.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  text-decoration: none;
}

.footer__links a:hover {
  color: var(--color-accent);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: var(--text-sm);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
}

.footer__bottom a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
}

.footer__bottom a:hover {
  color: var(--color-accent);
}

.footer__disclosure {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.45);
  line-height: 1.6;
  max-width: 72ch;
  margin-top: var(--space-4);
}

/* =========================================
   ARTICLE PAGE
   ========================================= */

.article-header {
  padding: clamp(var(--space-8), 5vw, var(--space-16)) 0 var(--space-8);
}

.article-header__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
  text-decoration: none;
}

.article-header__tag:hover {
  background: var(--color-accent);
  color: #fff;
}

.article-header__title {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
  line-height: 1.2;
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-header__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.article-hero-img {
  aspect-ratio: 21/9;
  width: 100%;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface-2);
  margin-bottom: var(--space-8);
}

.article-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Article content */
.article-grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

@media (min-width: 960px) {
  .article-grid {
    grid-template-columns: 220px 1fr 300px;
  }
}

/* Table of contents */
.toc {
  display: none;
}

@media (min-width: 960px) {
  .toc {
    display: block;
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

.toc__title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.toc__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.toc__link {
  display: block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  line-height: 1.4;
}

.toc__link:hover {
  color: var(--color-primary);
}

.toc__link--active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  font-weight: 600;
}

/* Article body prose */
.article-body {
  max-width: 72ch;
}

.article-body h2 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  color: var(--color-text);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--color-accent);
}

.article-body h3 {
  font-size: var(--text-base);
  font-weight: 700;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.article-body p {
  margin-bottom: var(--space-4);
  line-height: 1.8;
  color: var(--color-text);
}

.article-body ul, .article-body ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

.article-body li {
  margin-bottom: var(--space-2);
  line-height: 1.7;
}

/* Affiliate notice */
.affiliate-notice {
  background: var(--color-accent-light);
  border: 1px solid rgba(237, 137, 54, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.affiliate-notice svg {
  flex-shrink: 0;
  margin-top: 2px;
}

/* Info callout */
.callout {
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-6) 0;
  font-size: var(--text-sm);
  line-height: 1.7;
}

.callout--info {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  color: var(--color-text);
}

.callout--tip {
  background: #f0fff4;
  border-left: 4px solid var(--color-success);
}

[data-theme="dark"] .callout--tip {
  background: #1a2e1a;
}

.callout--warning {
  background: #fffff0;
  border-left: 4px solid var(--color-warning);
}

[data-theme="dark"] .callout--warning {
  background: #2e2a1a;
}

.callout__title {
  font-weight: 700;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Comparison table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-size: var(--text-sm);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  font-size: var(--text-xs);
  white-space: nowrap;
}

.comparison-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) td {
  background: var(--color-surface);
}

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--space-6) 0;
  border-radius: var(--radius-lg);
}

/* Pros / Cons */
.pros-cons {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

@media (min-width: 640px) {
  .pros-cons { grid-template-columns: 1fr 1fr; }
}

.pros-cons__col {
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
}

.pros-cons__col--pros {
  background: #f0fff4;
  border: 1px solid #c6f6d5;
}

[data-theme="dark"] .pros-cons__col--pros {
  background: #1a2e1a;
  border-color: #2d5a2d;
}

.pros-cons__col--cons {
  background: #fff5f5;
  border: 1px solid #fed7d7;
}

[data-theme="dark"] .pros-cons__col--cons {
  background: #2e1a1a;
  border-color: #5a2d2d;
}

.pros-cons__title {
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pros-cons__list {
  list-style: none;
  font-size: var(--text-sm);
}

.pros-cons__list li {
  padding: var(--space-1) 0;
  padding-left: var(--space-5);
  position: relative;
}

.pros-cons__list li::before {
  position: absolute;
  left: 0;
}

.pros-cons__col--pros .pros-cons__list li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
}

.pros-cons__col--cons .pros-cons__list li::before {
  content: '✗';
  color: var(--color-error);
  font-weight: 700;
}

/* Product recommendation card */
.product-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  margin: var(--space-6) 0;
  background: var(--color-bg);
  transition: box-shadow 0.2s ease;
}

.product-card:hover {
  box-shadow: var(--shadow-md);
}

.product-card__inner {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}

@media (min-width: 640px) {
  .product-card__inner {
    flex-wrap: nowrap;
  }
}

.product-card__img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-faint);
  font-size: var(--text-lg);
}

.product-card__body {
  flex: 1;
  min-width: 0;
}

.product-card__badge {
  display: inline-block;
  padding: 2px var(--space-2);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.product-card__name {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.product-card__specs {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  line-height: 1.6;
}

.product-card__rating {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.stars {
  color: #f6ad55;
  letter-spacing: 2px;
}

.product-card__rating-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 600;
}

.product-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  min-height: 44px;
}

.product-card__cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(237, 137, 54, 0.3);
}

/* Author bio */
.author-box {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  margin-top: var(--space-10);
}

.author-box__avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.author-box__info {
  flex: 1;
}

.author-box__name {
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.author-box__role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.author-box__bio {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Related articles */
.related-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Social share buttons */
.share-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: var(--space-6) 0;
}

.share-bar__label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-right: var(--space-2);
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
}

.share-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* =========================================
   ABOUT PAGE
   ========================================= */

.about-hero {
  background: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  color: #fff;
  padding: clamp(var(--space-12), 8vw, var(--space-20)) 0;
  text-align: center;
}

.about-hero__title {
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.about-hero__subtitle {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin-inline: auto;
}

.about-section {
  padding: clamp(var(--space-8), 5vw, var(--space-16)) 0;
}

.about-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .about-grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.about-card {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.about-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: 1.5rem;
}

.about-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.about-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Contact form */
.contact-form {
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  background: var(--color-bg);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* =========================================
   CATEGORY PAGE
   ========================================= */

.category-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: clamp(var(--space-8), 5vw, var(--space-12)) 0;
}

.category-header__title {
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.category-header__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.category-header__count {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-left: var(--space-2);
}

/* Tags cloud */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  text-decoration: none;
}

.tag-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* =========================================
   COOKIE BANNER
   ========================================= */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  padding: var(--space-4);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cookie-banner.is-visible {
  transform: translateY(0);
}

.cookie-banner__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.cookie-banner__text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  flex: 1;
  min-width: 200px;
}

.cookie-banner__actions {
  display: flex;
  gap: var(--space-2);
}

/* =========================================
   UTILITIES
   ========================================= */

.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

/* Scroll fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}