@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --blog-bg: #f7f9ff;
  --blog-surface: #ffffff;
  --blog-surface-soft: #eef3ff;
  --blog-text: #07111f;
  --blog-muted: #526071;
  --blog-line: #dfe7f3;
  --blog-primary: #3f46ff;
  --blog-primary-2: #6d8cff;
  --blog-primary-soft: #eef1ff;
  --blog-warning: #fff7db;
  --blog-warning-line: #4b55ff;
  --blog-shadow: 0 16px 45px rgba(20, 32, 70, .08);
  --blog-shadow-soft: 0 8px 24px rgba(20, 32, 70, .06);
  --blog-radius: 24px;
  --blog-container: 880px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--blog-text);
  background:
    radial-gradient(circle at 20% 0%, rgba(63,70,255,.10), transparent 32%),
    radial-gradient(circle at 100% 12%, rgba(109,140,255,.12), transparent 28%),
    var(--blog-bg);
  line-height: 1.72;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63,70,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63,70,255,.035) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 75%);
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--blog-primary); text-decoration: none; font-weight: 650; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.blog-post {
  width: min(calc(100% - 36px), var(--blog-container));
  margin: 0 auto;
  padding: 32px 0 70px;
}

.post-hero {
  position: relative;
  margin: 10px 0 34px;
  padding: clamp(26px, 5vw, 46px);
  overflow: hidden;
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.96), rgba(239,244,255,.88)),
    radial-gradient(circle at 100% 0%, rgba(63,70,255,.18), transparent 34%);
  border: 1px solid rgba(120, 139, 180, .22);
  box-shadow: var(--blog-shadow);
}
.post-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(63,70,255,.18), transparent 66%);
  pointer-events: none;
}

.post-category,
.post-hero .post-category[style] {
  position: relative;
  z-index: 1;
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  padding: 8px 13px !important;
  border-radius: 999px !important;
  background: var(--blog-primary-soft) !important;
  color: var(--blog-primary) !important;
  font-size: 12px;
  line-height: 1;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 850 !important;
}

.post-hero h1 {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 18px 0 18px;
  font-size: clamp(2.25rem, 6vw, 4.6rem);
  line-height: .98;
  letter-spacing: -.07em;
  font-weight: 900;
}

.post-meta {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--blog-muted);
  font-size: 14px;
}
.author-avatar,
.author-avatar[style] {
  width: 44px !important;
  height: 44px !important;
  flex: 0 0 auto;
  border-radius: 999px !important;
  display: grid !important;
  place-items: center !important;
  background: linear-gradient(135deg, var(--blog-primary), var(--blog-primary-2)) !important;
  color: #fff !important;
  box-shadow: 0 8px 18px rgba(63,70,255,.24);
  font-weight: 800 !important;
}
.meta-text { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; }
.meta-text span { display: inline-flex; align-items: center; gap: 4px; }
.meta-text strong { color: var(--blog-text); }

.featured-img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  margin: 24px 0 0;
  border-radius: 28px;
  box-shadow: 0 26px 55px rgba(20, 32, 70, .15);
  border: 1px solid rgba(255,255,255,.75);
}

.table-of-contents {
  margin: 34px 0 30px;
  padding: 22px 24px;
  border-radius: 22px;
  background: rgba(255,255,255,.86);
  border: 1px solid var(--blog-line);
  box-shadow: var(--blog-shadow-soft);
  backdrop-filter: blur(12px);
}
.table-of-contents h3 {
  margin: 0 0 12px;
  font-size: 16px;
  letter-spacing: -.02em;
}
.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}
.toc-list li { margin: 0; padding: 0; }
.toc-link {
  display: inline-flex;
  color: var(--blog-primary);
  font-size: 14px;
  line-height: 1.35;
  font-weight: 700;
}

.blog-post > p,
.blog-post > ul,
.blog-post > ol,
.blog-post > table,
.blog-post > .post-highlight,
.blog-post > .related-note,
.blog-post > .post-card,
.blog-post > .faq-item {
  margin-left: 0;
  margin-right: 0;
}

.blog-post p { margin: 0 0 20px; }
.blog-post strong { font-weight: 800; }
.blog-post em { color: #1d2a42; }

.blog-post h2 {
  margin: 46px 0 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid #dbe4ff;
  font-size: clamp(1.65rem, 3.6vw, 2.35rem);
  line-height: 1.08;
  letter-spacing: -.055em;
  font-weight: 900;
}
.blog-post h3 {
  margin: 30px 0 12px;
  font-size: 1.35rem;
  line-height: 1.18;
  letter-spacing: -.035em;
}

.blog-post ul,
.blog-post ol {
  padding-left: 1.35rem;
  margin-top: 0;
  margin-bottom: 24px;
}
.blog-post li { margin: 8px 0; padding-left: 3px; }
.blog-post li::marker { color: var(--blog-primary); font-weight: 800; }

.post-highlight,
.post-highlight[style] {
  margin: 28px 0 !important;
  padding: 20px 22px !important;
  border-radius: 18px !important;
  border: 0 !important;
  border-left: 4px solid var(--blog-warning-line) !important;
  background: linear-gradient(135deg, #eef2ff, #f4f7ff) !important;
  box-shadow: 0 12px 28px rgba(63,70,255,.07);
  color: #111827;
  font-size: 16px;
}

.related-note,
.related-note[style] {
  margin: 26px 0 !important;
  padding: 14px 16px !important;
  border-radius: 16px !important;
  border: 1px dashed var(--blog-line) !important;
  background: rgba(255,255,255,.72) !important;
  font-size: 14px !important;
  color: var(--blog-muted);
}
.related-note a { margin-inline: 4px; }

.comparison-table,
.comparison-table[style],
table {
  width: 100% !important;
  border-collapse: separate !important;
  border-spacing: 0 !important;
  overflow: hidden;
  margin: 24px 0 30px !important;
  border: 1px solid var(--blog-line) !important;
  border-radius: 18px;
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow-soft);
  font-size: 15px !important;
}
th, td,
th[style], td[style] {
  border: 0 !important;
  border-bottom: 1px solid var(--blog-line) !important;
  padding: 14px 15px !important;
  vertical-align: top;
}
thead tr,
thead tr[style] { background: var(--blog-primary-soft) !important; }
th { text-align: left; font-weight: 850; color: var(--blog-text); }
tbody tr:nth-child(even),
tbody tr[style] { background: #f8faff !important; }
tbody tr:last-child td { border-bottom: 0 !important; }

code {
  padding: .16em .42em;
  border-radius: 8px;
  background: #edf2ff;
  color: #2130c9;
  font-size: .92em;
  font-weight: 700;
}

.post-card,
.post-card[style],
.faq-item,
.faq-item[style] {
  margin: 18px 0 24px !important;
  padding: 20px 22px !important;
  border-radius: 20px !important;
  border: 1px solid var(--blog-line) !important;
  background: rgba(255,255,255,.86) !important;
  box-shadow: var(--blog-shadow-soft);
}
.post-card p:last-child,
.faq-item p:last-child { margin-bottom: 0; }

.blog-post > *:last-child { margin-bottom: 0; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .blog-post { width: min(calc(100% - 24px), var(--blog-container)); padding-top: 18px; }
  .post-hero { border-radius: 24px; padding: 22px; }
  .post-hero h1 { letter-spacing: -.055em; }
  .post-meta { align-items: flex-start; }
  .meta-text { display: grid; gap: 4px; }
  .featured-img { border-radius: 20px; }
  .table-of-contents { padding: 18px; border-radius: 18px; }
  .toc-list { display: grid; gap: 9px; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
  th, td, th[style], td[style] { min-width: 180px; }
}

@media (prefers-reduced-motion: no-preference) {
  .featured-img,
  .table-of-contents,
  .post-highlight,
  .related-note,
  .post-card,
  .comparison-table {
    animation: blogFadeUp .45s ease both;
  }
  @keyframes blogFadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
}