/* =============================================================
 * TikImpact Public CSS — Editorial Light Luxury v1.0
 * Sprint T · 2026-04-21
 *
 * 设计方向：
 *   - Light Luxury 浅色高级感（米白底 + 深墨文字 + 青/红 accent）
 *   - Editorial 编辑级排版（大标题 + 行距呼吸感）
 *   - 零 Tailwind 依赖 · 手写 CSS 变量体系
 * ============================================================= */

/* ========== Design Tokens ========== */
:root {
  /* Palette */
  --color-paper:      #FAFAF7;   /* 底色：微暖米白 */
  --color-paper-alt:  #F2EEE6;   /* alt 底色 */
  --color-ink:        #13131A;   /* 文字主色 */
  --color-ink-soft:   #4A4A55;   /* 次要文字 */
  --color-ink-mute:   #8A8A94;   /* 弱文字 */
  --color-line:       rgba(19, 19, 26, 0.08);
  --color-line-strong:rgba(19, 19, 26, 0.16);
  --color-accent:     #FE2C55;   /* brand-red */
  --color-accent-2:   #25F4EE;   /* brand-cyan */
  --color-success:    #10B981;

  /* Typography */
  --font-display: 'Bricolage Grotesque', 'Noto Serif SC', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --text-xs:   clamp(0.75rem, 0.72rem + 0.15vw, 0.8rem);
  --text-sm:   clamp(0.875rem, 0.85rem + 0.2vw, 0.95rem);
  --text-base: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  --text-lg:   clamp(1.15rem, 1.05rem + 0.5vw, 1.375rem);
  --text-xl:   clamp(1.5rem, 1.3rem + 1vw, 1.875rem);
  --text-2xl:  clamp(2rem, 1.6rem + 2vw, 2.75rem);
  --text-3xl:  clamp(2.5rem, 2rem + 2.5vw, 3.75rem);
  --text-4xl:  clamp(3rem, 2rem + 5vw, 5.5rem);
  --text-hero: clamp(3rem, 2rem + 7vw, 7.5rem);

  /* Spacing */
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px;
  --space-12: 48px; --space-16: 64px; --space-20: 80px; --space-24: 96px;
  --space-section: clamp(4rem, 3rem + 5vw, 9rem);
  --container: 1200px;

  /* Radius + Shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(19,19,26,0.06);
  --shadow-md: 0 8px 24px rgba(19,19,26,0.08);
  --shadow-lg: 0 24px 48px rgba(19,19,26,0.12);

  --dur-fast: 180ms;
  --dur-normal: 400ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ========== Base ========== */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.55;
  color: var(--color-ink);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; margin: 0; color: var(--color-ink); }
h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p { margin: 0 0 1em; }
a { color: var(--color-ink); text-decoration-color: var(--color-ink-mute); text-underline-offset: 3px; transition: color var(--dur-fast) var(--ease-out-expo); }
a:hover { color: var(--color-accent); text-decoration-color: var(--color-accent); }

img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }

/* ========== Layout ========== */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

section { padding: var(--space-section) 0; }
section.hero { padding: clamp(5rem, 4rem + 8vw, 10rem) 0 var(--space-section); }

/* ========== Header ========== */

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.site-logo {
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg);
  letter-spacing: -0.03em;
  text-decoration: none;
  display: inline-flex; align-items: baseline; gap: 2px;
}
.site-logo__dot { color: var(--color-accent); }
.site-nav { display: flex; align-items: center; gap: var(--space-8); }
.site-nav__list { display: flex; gap: var(--space-6); list-style: none; margin: 0; padding: 0; }
.site-nav__list a { text-decoration: none; font-size: var(--text-sm); font-weight: 500; color: var(--color-ink-soft); }
.site-nav__list a:hover { color: var(--color-ink); }
.site-nav__actions { display: flex; gap: var(--space-3); align-items: center; }
@media (max-width: 767px) {
  .site-nav__list { display: none; }
}

/* ========== CTA Buttons ========== */

.cta-btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 12px 24px;
  font-size: var(--text-sm); font-weight: 600;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: all var(--dur-fast) var(--ease-out-expo);
  border: 1px solid transparent;
  letter-spacing: -0.01em;
}
.cta-btn .cta-arrow { transition: transform var(--dur-fast) var(--ease-out-expo); }
.cta-btn:hover .cta-arrow { transform: translateX(4px); }

.cta-primary { background: var(--color-ink); color: var(--color-paper); }
.cta-primary:hover { background: var(--color-accent); color: white; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.cta-accent { background: var(--color-accent); color: white; }
.cta-accent:hover { background: #E61E46; box-shadow: var(--shadow-md); transform: translateY(-1px); }

.cta-ghost { background: transparent; color: var(--color-ink); border-color: var(--color-line-strong); }
.cta-ghost:hover { border-color: var(--color-ink); background: var(--color-ink); color: var(--color-paper); }

.cta-text { background: transparent; padding: 4px 0; color: var(--color-ink-soft); }
.cta-text:hover { color: var(--color-accent); }

/* ========== Hero ========== */

.hero { text-align: center; position: relative; overflow: hidden; }
.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 12px; border-radius: var(--radius-pill);
  background: rgba(254, 44, 85, 0.08); color: var(--color-accent);
  margin-bottom: var(--space-6);
}
.hero__title {
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 var(--space-6);
  max-width: 14ch; margin-left: auto; margin-right: auto;
}
.hero__title em {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__sub {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  max-width: 55ch;
  margin: 0 auto var(--space-10);
  line-height: 1.5;
}
.hero__actions { display: inline-flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }

/* ========== Section Heading ========== */

.section-head { text-align: center; margin-bottom: var(--space-12); }
.section-head__eyebrow {
  font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-ink-mute);
  margin-bottom: var(--space-3); display: inline-block;
}
.section-head__title { font-size: var(--text-2xl); max-width: 18ch; margin: 0 auto; }
.section-head__sub { font-size: var(--text-base); color: var(--color-ink-soft); max-width: 50ch; margin: var(--space-3) auto 0; }

/* ========== Feature Grid ========== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.feature-card {
  padding: var(--space-8);
  background: var(--color-paper-alt);
  border-radius: var(--radius-lg);
  transition: transform var(--dur-fast) var(--ease-out-expo), box-shadow var(--dur-fast);
  display: flex; flex-direction: column; gap: var(--space-4);
  position: relative;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-card__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-ink); color: var(--color-paper);
  border-radius: var(--radius-md);
  font-size: 1.5rem;
}
.feature-card__title { font-size: var(--text-lg); letter-spacing: -0.02em; }
.feature-card__desc { color: var(--color-ink-soft); font-size: var(--text-sm); margin: 0; line-height: 1.55; }
.feature-card__link { margin-top: auto; font-size: var(--text-sm); font-weight: 500; color: var(--color-ink); text-decoration: none; display: inline-flex; align-items: center; gap: 4px; }
.feature-card__link:hover { color: var(--color-accent); }
.feature-card__link::after { content: '→'; transition: transform var(--dur-fast); }
.feature-card__link:hover::after { transform: translateX(4px); }

/* ========== Stats ========== */

.stats-section { background: var(--color-ink); color: var(--color-paper); padding: var(--space-16) 0; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-8); max-width: 900px; margin: 0 auto; }
.stat-item { text-align: center; }
.stat-value { font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 600; letter-spacing: -0.03em; display: block; margin-bottom: var(--space-2); background: linear-gradient(135deg, var(--color-paper), var(--color-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: rgba(250, 250, 247, 0.6); }

/* ========== Pricing ========== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
  max-width: 1040px;
  margin: 0 auto;
}
.pricing-card {
  background: var(--color-paper-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex; flex-direction: column; gap: var(--space-4);
  transition: all var(--dur-fast) var(--ease-out-expo);
  position: relative;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.pricing-card--featured {
  background: var(--color-ink);
  color: var(--color-paper);
  transform: scale(1.04);
  box-shadow: var(--shadow-lg);
}
.pricing-card--featured:hover { transform: scale(1.04) translateY(-4px); }
.pricing-badge {
  position: absolute; top: -12px; right: 24px;
  background: var(--color-accent); color: white;
  font-size: var(--text-xs); font-weight: 600;
  padding: 4px 12px; border-radius: var(--radius-pill);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.pricing-tier { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-ink-mute); margin: 0 0 var(--space-2); }
.pricing-card--featured .pricing-tier { color: rgba(250, 250, 247, 0.6); }
.pricing-name { font-size: var(--text-xl); letter-spacing: -0.02em; margin: 0 0 var(--space-2); }
.pricing-card--featured .pricing-name { color: var(--color-paper); }
.pricing-price { display: flex; align-items: baseline; gap: 4px; margin: var(--space-3) 0; }
.pricing-price__amount { font-family: var(--font-display); font-size: var(--text-3xl); font-weight: 600; letter-spacing: -0.04em; }
.pricing-price__period { font-size: var(--text-sm); color: var(--color-ink-mute); }
.pricing-card--featured .pricing-price__period { color: rgba(250, 250, 247, 0.6); }
.pricing-features { list-style: none; padding: 0; margin: var(--space-4) 0; flex: 1; }
.pricing-features li { padding: var(--space-2) 0; font-size: var(--text-sm); color: var(--color-ink-soft); display: flex; gap: var(--space-2); align-items: flex-start; }
.pricing-card--featured .pricing-features li { color: rgba(250, 250, 247, 0.85); }
.pricing-features li::before { content: '✓'; color: var(--color-accent); font-weight: 700; }
.pricing-cta { margin-top: auto; }

/* ========== CTA Section ========== */

.cta-section {
  text-align: center;
  padding: var(--space-section) 0;
  background: linear-gradient(135deg, var(--color-paper-alt), var(--color-paper));
}
.cta-section__title { font-size: var(--text-3xl); margin: 0 0 var(--space-4); max-width: 20ch; margin-left: auto; margin-right: auto; }
.cta-section__sub { font-size: var(--text-lg); color: var(--color-ink-soft); max-width: 50ch; margin: 0 auto var(--space-8); }

/* ========== Footer ========== */

.site-footer { background: var(--color-ink); color: rgba(250, 250, 247, 0.75); padding: var(--space-16) 0 var(--space-8); }
.site-footer__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-6); }
.site-footer__cols { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-10); margin-bottom: var(--space-10); }
.site-footer__brand .site-logo { color: var(--color-paper); font-size: var(--text-xl); }
.site-footer__tagline { margin-top: var(--space-3); font-size: var(--text-sm); max-width: 40ch; line-height: 1.55; }
.site-footer__col h4 { color: var(--color-paper); font-size: var(--text-sm); text-transform: uppercase; letter-spacing: 0.08em; font-family: var(--font-mono); font-weight: 500; margin: 0 0 var(--space-4); }
.site-footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.site-footer__col a { color: rgba(250, 250, 247, 0.75); text-decoration: none; font-size: var(--text-sm); }
.site-footer__col a:hover { color: var(--color-paper); }
.site-footer__legal { padding-top: var(--space-8); border-top: 1px solid rgba(250, 250, 247, 0.1); font-size: var(--text-xs); color: rgba(250, 250, 247, 0.5); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); }
.site-footer__legal a { color: rgba(250, 250, 247, 0.5); text-decoration: none; margin-right: var(--space-4); }
.site-footer__legal a:hover { color: var(--color-paper); }
@media (max-width: 767px) {
  .site-footer__cols { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* ========== FAQ ========== */

.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-line); }
.faq-item:first-child { border-top: 1px solid var(--color-line); }
.faq-item summary {
  font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; letter-spacing: -0.02em;
  padding: var(--space-6) var(--space-4) var(--space-6) 0;
  cursor: pointer;
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  gap: var(--space-4);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: var(--text-xl); font-weight: 300;
  transition: transform var(--dur-fast);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--color-ink-soft); padding-bottom: var(--space-6); margin: 0; max-width: 60ch; }

/* =============================================================
 * Sprint V · Feature Detail + About + Contact 扩展
 * ============================================================= */

/* Feature pills (hero bottom) */
.feature-pills { display: inline-flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; margin-top: var(--space-6); }
.feature-pill {
  font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em;
  padding: 4px 12px; background: var(--color-paper-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  color: var(--color-ink-soft);
}

/* Feature sections (alternating 2-column) */
.feature-sections { display: flex; flex-direction: column; gap: var(--space-16); max-width: 1080px; margin: 0 auto; }
.feature-section { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); align-items: center; }
.feature-section__visual {
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--color-paper-alt), var(--color-paper));
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
}
.feature-section__icon { font-size: clamp(4rem, 8vw, 6rem); }
.feature-section__body h2 { font-size: var(--text-2xl); margin-bottom: var(--space-4); letter-spacing: -0.03em; }
.feature-section__body p { font-size: var(--text-base); line-height: 1.7; color: var(--color-ink-soft); margin: 0; max-width: 50ch; }

@media (max-width: 767px) {
  .feature-section { grid-template-columns: 1fr !important; flex-direction: column !important; gap: var(--space-6); }
}

/* Benefits grid (2 cols text-heavy) */
.benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-6); max-width: 1080px; margin: 0 auto; }
.benefit-item { padding: var(--space-6); background: var(--color-paper-alt); border-radius: var(--radius-md); border-left: 3px solid var(--color-accent); }
.benefit-label { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); letter-spacing: -0.02em; display: block; margin-bottom: var(--space-2); }
.benefit-desc { color: var(--color-ink-soft); font-size: var(--text-sm); line-height: 1.6; margin: 0; }

/* About / Contact shared */
.prose-page { max-width: 720px; margin: 0 auto; padding: var(--space-16) 0 var(--space-section); }
.prose-page h2 { font-size: var(--text-xl); margin: var(--space-10) 0 var(--space-3); letter-spacing: -0.02em; }
.prose-page h3 { font-size: var(--text-lg); margin: var(--space-6) 0 var(--space-2); letter-spacing: -0.015em; }
.prose-page p, .prose-page li { font-size: var(--text-base); line-height: 1.7; color: var(--color-ink-soft); }
.prose-page ul { padding-left: 1.5em; }
.prose-page strong { color: var(--color-ink); font-weight: 600; }

/* Contact form */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); max-width: 1040px; margin: 0 auto; align-items: start; }
.contact-grid__info h3 { font-size: var(--text-lg); margin-bottom: var(--space-3); letter-spacing: -0.02em; }
.contact-grid__info p { color: var(--color-ink-soft); margin-bottom: var(--space-6); }
.contact-item { display: flex; align-items: flex-start; gap: var(--space-3); margin-bottom: var(--space-4); }
.contact-item__icon { width: 36px; height: 36px; background: var(--color-paper-alt); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1.1rem; }
.contact-item__label { font-weight: 600; display: block; color: var(--color-ink); font-size: var(--text-sm); margin-bottom: 2px; }
.contact-item__value { color: var(--color-ink-soft); font-size: var(--text-sm); }
.contact-item__value a { color: var(--color-ink-soft); text-decoration: none; }
.contact-item__value a:hover { color: var(--color-accent); }

.contact-form { background: var(--color-paper-alt); padding: var(--space-8); border-radius: var(--radius-lg); display: flex; flex-direction: column; gap: var(--space-4); }
.contact-form label { font-size: var(--text-sm); font-weight: 500; display: block; margin-bottom: var(--space-2); color: var(--color-ink); }
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%; padding: 10px 14px;
  background: var(--color-paper); border: 1px solid var(--color-line);
  border-radius: var(--radius-sm); font-family: var(--font-body); font-size: var(--text-sm);
  color: var(--color-ink); transition: border-color var(--dur-fast);
}
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { outline: none; border-color: var(--color-ink); box-shadow: 0 0 0 3px rgba(19,19,26,0.08); }
.contact-form textarea { min-height: 120px; resize: vertical; }

@media (max-width: 767px) { .contact-grid { grid-template-columns: 1fr; } }

/* About team grid (optional) */
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-6); margin-top: var(--space-10); }
.value-card { padding: var(--space-6); background: var(--color-paper-alt); border-radius: var(--radius-md); text-align: center; }
.value-card__icon { font-size: 2rem; margin-bottom: var(--space-3); }
.value-card__title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); margin-bottom: var(--space-2); letter-spacing: -0.02em; }
.value-card__desc { font-size: var(--text-sm); color: var(--color-ink-soft); line-height: 1.6; margin: 0; }

/* =============================================================
 * Sprint W · Blog (single + archive)
 * ============================================================= */

.post-meta { font-size: var(--text-sm); color: var(--color-ink-soft); margin: 0; font-family: var(--font-mono); }
.post-featured { margin: var(--space-8) 0; }
.post-featured img { border-radius: var(--radius-lg); width: 100%; }

/* Prose (single.php content) */
.prose-post { font-size: var(--text-base); line-height: 1.75; color: var(--color-ink); }
.prose-post p { margin: 0 0 1.25em; }
.prose-post h2 { font-size: var(--text-xl); margin: var(--space-10) 0 var(--space-3); letter-spacing: -0.02em; }
.prose-post h3 { font-size: var(--text-lg); margin: var(--space-8) 0 var(--space-2); }
.prose-post img { max-width: 100%; height: auto; border-radius: var(--radius-md); margin: var(--space-6) 0; }
.prose-post blockquote { border-left: 3px solid var(--color-accent); padding-left: var(--space-4); margin: var(--space-6) 0; color: var(--color-ink-soft); font-style: italic; }
.prose-post code { background: var(--color-paper-alt); padding: 2px 6px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.9em; }
.prose-post pre { background: var(--color-ink); color: var(--color-paper); padding: var(--space-5); border-radius: var(--radius-md); overflow-x: auto; }
.prose-post pre code { background: transparent; color: inherit; padding: 0; }
.prose-post ul, .prose-post ol { padding-left: 1.5em; margin: 0 0 1.25em; }
.prose-post li { margin-bottom: 0.5em; }
.prose-post a { color: var(--color-ink); text-decoration: underline; text-decoration-color: var(--color-accent); }
.prose-post a:hover { color: var(--color-accent); }

.post-tags { margin-top: var(--space-10); padding-top: var(--space-6); border-top: 1px solid var(--color-line); display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* Archive grid */
.post-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-6); }
.post-card { background: var(--color-paper-alt); border-radius: var(--radius-lg); overflow: hidden; transition: transform var(--dur-fast) var(--ease-out-expo); display: flex; flex-direction: column; }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.post-card__thumb { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--color-paper); }
.post-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-normal) var(--ease-out-expo); }
.post-card:hover .post-card__thumb img { transform: scale(1.04); }
.post-card__body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.post-card__cat { font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-accent); }
.post-card__title { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; letter-spacing: -0.02em; margin: 0; }
.post-card__title a { color: var(--color-ink); text-decoration: none; }
.post-card__title a:hover { color: var(--color-accent); }
.post-card__excerpt { font-size: var(--text-sm); color: var(--color-ink-soft); line-height: 1.55; margin: 0; flex: 1; }
.post-card__meta { font-size: var(--text-xs); color: var(--color-ink-mute); font-family: var(--font-mono); margin-top: var(--space-2); }

/* Pagination */
.pagination-nav .page-numbers { display: inline-block; padding: 8px 14px; margin: 0 4px; border-radius: var(--radius-sm); color: var(--color-ink-soft); text-decoration: none; font-family: var(--font-mono); font-size: var(--text-sm); transition: all var(--dur-fast); }
.pagination-nav .page-numbers:hover { background: var(--color-paper-alt); color: var(--color-ink); }
.pagination-nav .page-numbers.current { background: var(--color-ink); color: var(--color-paper); }