/* ============================================================
   Modern Nook Lab — Design System
   家居 · 室内设计 · 居家好物
   ============================================================ */

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #2C2C2C;
  background: #F5F0EB;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: #8B6E4E; }
ul, ol { list-style: none; }

/* ---- CSS Variables ---- */
:root {
  --color-primary: #8B6E4E;
  --color-primary-light: #A88B6A;
  --color-primary-dark: #6D5438;
  --color-accent: #9CAF88;
  --color-accent-light: #B5C5A0;
  --color-cta: #C97B5A;
  --color-cta-hover: #B56748;
  --color-bg: #F5F0EB;
  --color-bg-alt: #EDE6DE;
  --color-bg-card: #FFFFFF;
  --color-text: #2C2C2C;
  --color-text-light: #6B6B6B;
  --color-text-muted: #9A9A9A;
  --color-border: #E0D8D0;
  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --container-max: 1200px;
  --container-narrow: 800px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Utility ---- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: var(--container-narrow); }
.section { padding: 64px 0; }
.section__title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: 8px;
}
.section__subtitle {
  color: var(--color-text-light);
  font-size: 0.95rem;
  margin-bottom: 32px;
}
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 500;
  border: none; cursor: pointer;
  transition: all var(--transition);
}
.btn--primary {
  background: var(--color-cta); color: #fff;
  box-shadow: 0 2px 8px rgba(201,123,90,0.3);
}
.btn--primary:hover {
  background: var(--color-cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(201,123,90,0.35);
  color: #fff;
}
.btn--outline {
  background: transparent; color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary); color: #fff;
}
.btn--sm { padding: 6px 16px; font-size: 0.85rem; }

/* ---- Header ---- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 100;
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
  height: 72px;
}
.site-header__logo {
  font-family: var(--font-display);
  font-size: 1.4rem; font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.site-header__logo span { color: var(--color-primary); }
.site-header__nav { display: flex; align-items: center; gap: 32px; }
.site-header__nav .cat-accordion { display: none; }
.site-header__nav a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--color-text-light);
  position: relative;
  padding: 4px 0;
}
.site-header__nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.site-header__nav a:hover::after,
.site-header__nav a.active::after { width: 100%; }
.site-header__nav a:hover { color: var(--color-text); }
.site-header__nav a.active { color: var(--color-text); font-weight: 600; }

/* ---- Category Nav (sub) ---- */
.cat-nav {
  background: var(--color-bg-alt);
  padding: 16px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.cat-nav__inner {
  display: flex; gap: 8px;
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
}
.cat-nav__item {
  flex-shrink: 0;
  padding: 8px 20px;
  border-radius: 100px;
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: 0.85rem; font-weight: 500;
  color: var(--color-text-light);
  transition: all var(--transition);
  white-space: nowrap;
}
.cat-nav__item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(139,110,78,0.05);
}
.cat-nav__item.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 520px;
  display: flex; align-items: center;
  overflow: hidden;
  background: var(--color-primary-dark);
}
.hero__bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0.4;
}
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(44,44,44,0.85) 0%, rgba(44,44,44,0.4) 100%);
}
.hero__content {
  position: relative; z-index: 2;
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
  width: 100%;
}
.hero__tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.8rem; font-weight: 500;
  margin-bottom: 16px;
}
.hero__title {
  font-family: var(--font-display);
  font-size: 2.8rem; font-weight: 700;
  color: #fff;
  line-height: 1.2;
  max-width: 640px;
  margin-bottom: 16px;
}
.hero__desc {
  color: rgba(255,255,255,0.8);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 24px;
  line-height: 1.6;
}
.hero__meta {
  display: flex; align-items: center; gap: 16px;
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  margin-top: 15px;
}
.hero__author-img {
  width: 32px; height: 32px; border-radius: 50%;
  object-fit: cover;
}
.hero__dots {
  position: absolute; bottom: 24px; right: 24px;
  display: flex; gap: 8px;
}
.hero__dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer; transition: all var(--transition);
}
.hero__dot.active { background: #fff; width: 28px; border-radius: 5px; }

/* ---- Article Cards ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}
.card-grid--featured {
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
}
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.card__image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card__image img { transform: scale(1.05); }
.card__body {
  padding: 20px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card__cat {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  background: rgba(156,175,136,0.15);
  color: var(--color-accent);
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: auto;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__excerpt {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}
.card__footer {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  margin-top: 16px;
}
.card__author {
  display: flex; align-items: center; gap: 8px;
}
.card__author-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 600;
  color: var(--color-primary);
  overflow: hidden;
  flex-shrink: 0;
}
.card__author-avatar img { width: 100%; height: 100%; object-fit: cover; }
.card__author-name {
  font-weight: 500;
  color: var(--color-text-light);
}
.card__date-sep {
  color: var(--color-text-muted);
  margin: 0 2px;
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 32px;
}
.site-footer__inner {
  max-width: var(--container-max); margin: 0 auto; padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}
.site-footer__brand .site-header__logo { color: #fff; margin-bottom: 12px; display: inline-block; }
.site-footer__brand p { font-size: 0.85rem; line-height: 1.6; max-width: 320px; }
.site-footer__col h4 {
  font-family: var(--font-display);
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
}
.site-footer__col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  padding: 4px 0;
  transition: color var(--transition);
}
.site-footer__col a:hover { color: #fff; }
.site-footer__bottom {
  max-width: var(--container-max); margin: 0 auto; padding: 24px 24px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 40px;
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: var(--color-text); }
.breadcrumb__sep { margin: 0 8px; }

/* ---- Page Header ---- */
.page-header {
  padding: 48px 0 32px;
  text-align: center;
}
.page-header__title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--color-text);
  margin-bottom: 8px;
}
.page-header__desc {
  color: var(--color-text-light);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Trust Pages (About, Author, Contact, Privacy) ---- */
.trust-page { padding: 32px 0 64px; }
.trust-page .container--narrow { max-width: var(--container-narrow); }

/* About */
.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 48px;
}
.about-hero__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}
.about-hero__image img { width: 100%; height: 100%; object-fit: cover; }
.about-hero__text h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 16px;
}
.about-hero__text p {
  color: var(--color-text-light);
  margin-bottom: 12px;
  line-height: 1.7;
}
.about-timeline { margin-top: 48px; }
.about-timeline__item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}
.about-timeline__year {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}
.about-timeline__text p { color: var(--color-text-light); font-size: 0.9rem; }

/* Author Page */
.author-card {
  display: flex; gap: 40px; align-items: flex-start;
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}
.author-card__avatar {
  width: 140px; height: 140px; border-radius: 50%;
  overflow: hidden; flex-shrink: 0;
  border: 4px solid var(--color-bg);
}
.author-card__avatar img { width: 100%; height: 100%; object-fit: cover; }
.author-card__info h2 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 4px;
}
.author-card__role {
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.author-card__bio p {
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.7;
}
.author-card__contact {
  display: flex; gap: 12px; margin-top: 16px;
}
.author-card__contact a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.author-card__contact a:hover { color: var(--color-primary); }

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-form label {
  display: block;
  font-size: 0.9rem; font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--color-bg-card);
  transition: border-color var(--transition);
  margin-bottom: 20px;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 16px;
}
.contact-info__item {
  display: flex; gap: 12px;
  margin-bottom: 20px;
}
.contact-info__item-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(139,110,78,0.1);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
  font-size: 1rem;
}
.contact-info__item-text h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 2px; }
.contact-info__item-text p { font-size: 0.85rem; color: var(--color-text-light); }

/* Privacy Page */
.privacy-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--color-text);
  margin: 32px 0 12px;
}
.privacy-content h3:first-child { margin-top: 0; }
.privacy-content p {
  color: var(--color-text-light);
  margin-bottom: 12px;
  line-height: 1.7;
}
.privacy-content ul { padding-left: 24px; margin-bottom: 12px; }
.privacy-content li {
  color: var(--color-text-light);
  margin-bottom: 6px;
  list-style: disc;
}

/* ---- Category Page ---- */
.category-header {
  background: var(--color-bg-alt);
  padding: 40px 0;
  text-align: center;
}
.category-header__icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.category-header__title {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: 8px;
}
.category-header__desc {
  color: var(--color-text-light);
  max-width: 520px;
  margin: 0 auto;
}

/* ---- Post/Article Detail ---- */
.post-article { padding: 32px 0 64px; }
.post-header {
  text-align: center;
  max-width: var(--container-narrow);
  margin: 0 auto 32px;
  padding: 0 24px;
}
.post-header__cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(156,175,136,0.15);
  color: var(--color-accent);
  font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.post-header__title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1.25;
  margin-bottom: 16px;
}
.post-header__meta {
  display: flex; justify-content: center; align-items: center; gap: 20px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.post-header__author {
  display: flex; align-items: center; gap: 8px;
}
.post-header__author img {
  width: 32px; height: 32px; border-radius: 50%;
  object-fit: cover;
}
.post-featured-image {
  max-width: var(--container-narrow);
  margin: 0 auto 32px;
  padding: 0 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.post-content {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 24px;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text);
}
.post-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 40px 0 16px;
}
.post-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 32px 0 12px;
}
.post-content p { margin-bottom: 16px; }
.post-content ul { padding-left: 24px; margin-bottom: 16px; }
.post-content li { margin-bottom: 8px; list-style: disc; }
.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-light);
}
.post-content img {
  border-radius: var(--radius-md);
  margin: 24px auto;
}
.post-tags {
  max-width: var(--container-narrow);
  margin: 32px auto 0;
  padding: 0 24px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.post-tags__item {
  padding: 4px 14px;
  border-radius: 100px;
  background: var(--color-bg-alt);
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.post-tags__item:hover { background: var(--color-primary); color: #fff; }

.post-author-box {
  max-width: var(--container-narrow);
  margin: 40px auto 0;
  padding: 32px 24px;
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex; gap: 24px; align-items: flex-start;
}
.post-author-box__avatar {
  width: 64px; height: 64px; border-radius: 50%;
  overflow: hidden; flex-shrink: 0;
}
.post-author-box__avatar img { width: 100%; height: 100%; object-fit: cover; }
.post-author-box__info h4 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.post-author-box__info p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ---- Newsletter ---- */
.newsletter {
  background: var(--color-bg-alt);
  text-align: center;
  padding: 64px 24px;
}
.newsletter h3 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  margin-bottom: 8px;
}
.newsletter p { color: var(--color-text-light); margin-bottom: 24px; }
.newsletter__form {
  display: flex; gap: 12px; max-width: 480px; margin: 0 auto;
}
.newsletter__form input {
  flex: 1;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

/* ---- Mobile Menu Toggle ---- */
.mobile-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
  padding: 4px;
}
.mobile-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-hero { grid-template-columns: 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .site-header__nav { display: none; }
  .mobile-toggle { display: flex; }
  .site-header__nav.open {
    display: flex; flex-direction: column;
    position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; padding: 16px 24px 24px;
    border-bottom: 1px solid var(--color-border);
    gap: 16px;
    box-shadow: var(--shadow-md);
  }
  .hero { min-height: 380px; }
  .hero__title { font-size: 1.8rem; }
  .hero__desc { font-size: 0.95rem; }
  @media (max-width: 480px) {
    .hero__title { font-size: 1.3rem; }
    .hero__desc { font-size: 0.82rem; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .hero__meta { display: none; }
    .hero__content { padding: 0 16px; }
  }
  .cat-nav { display: none; }
  .site-header__nav.open .cat-accordion { display: block; }

  /* ---- Accordion for mobile categories ---- */
  .cat-accordion {
    margin-top: 8px;
    border-top: 1px solid var(--color-border);
    padding-top: 4px;
  }
  .cat-accordion__trigger {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%;
    background: none; border: none;
    padding: 10px 4px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-muted);
    cursor: pointer;
    transition: color var(--transition);
  }
  .cat-accordion__trigger:hover { color: var(--color-text); }
  .cat-accordion__trigger i {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
    color: var(--color-muted);
  }
  .cat-accordion__trigger.open i {
    transform: rotate(180deg);
  }
  .cat-accordion__body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .cat-accordion__body.open {
    max-height: 600px;
  }
  .nav-categories-mobile {
    display: flex; flex-direction: column;
    gap: 2px;
    padding-top: 4px;
  }
  .nav-categories-mobile a {
    display: flex; align-items: center; gap: 10px;
    padding: 7px 12px;
    font-size: 0.9rem;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
  }
  .nav-categories-mobile a:hover {
    color: var(--color-primary);
  }
  .nav-categories-mobile a i {
    width: 18px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-muted);
  }
  .nav-categories-mobile a.active {
    color: var(--color-primary);
    font-weight: 600;
  }
  .nav-categories-mobile a.active i { color: var(--color-primary); }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid--featured { grid-template-columns: 1fr; }
  .page-header__title { font-size: 1.6rem; }
  .post-header__title { font-size: 1.5rem; }
  .author-card { flex-direction: column; align-items: center; text-align: center; padding: 24px; }
  .author-card__contact { justify-content: center; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 24px; }
  .site-footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
  .about-timeline__item { grid-template-columns: 1fr; gap: 4px; }
  .post-author-box { flex-direction: column; align-items: center; text-align: center; }
  .newsletter__form { flex-direction: column; }
}

/* ---- Animations ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up {
  animation: fadeUp 0.6s ease forwards;
}
.animate-fade-up--d1 { animation-delay: 0.1s; }
.animate-fade-up--d2 { animation-delay: 0.2s; }
.animate-fade-up--d3 { animation-delay: 0.3s; }
.animate-fade-up--d4 { animation-delay: 0.4s; }