:root {
  --bg: #f8fafc;
  --bg-alt: #ffffff;
  --surface: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #7c3aed;
  --accent-2: #6366f1;
  --accent-hover: #6d28d9;
  --ok: #16a34a;
  --hot: #ef4444;
  --new: #3b82f6;
  --radius: 14px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}
.container { width: min(1180px, 92vw); margin-inline: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; }

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--surface);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}
.logo { font-weight: 800; font-size: 1.2rem; color: var(--text); display: flex; align-items: center; gap: 0.55rem; }
.logo img { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0; }
.logo__mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; display: grid; place-items: center; font-size: 0.75rem; font-weight: 800;
}
.logo span { color: var(--accent); }
.brand-hero-img { width: min(420px, 100%); border-radius: var(--radius); box-shadow: var(--shadow); }
.checker-section-title { font-size: 1.15rem; margin: 2rem 0 1rem; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }
.nav { display: none; gap: 1.25rem; align-items: center; }
.nav a { color: var(--muted); font-size: 0.92rem; font-weight: 500; }
.nav a:hover, .nav a.is-active { color: var(--accent); }
.header__actions { display: flex; align-items: center; gap: 0.65rem; }
.lang-switch {
  display: flex; border: 1px solid var(--surface); border-radius: 999px; overflow: hidden; font-size: 0.8rem; font-weight: 600;
}
.lang-switch a { padding: 0.35rem 0.65rem; color: var(--muted); background: transparent; }
.lang-switch a.is-active { background: var(--accent); color: #fff; }
.lang-switch a:hover:not(.is-active) { color: var(--text); }
@media (min-width: 900px) { .nav { display: flex; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.35rem;
  font-weight: 600; border-radius: 10px; border: none; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn--sm { padding: 0.45rem 0.9rem; font-size: 0.85rem; }
.btn--lg { padding: 0.85rem 1.35rem; font-size: 1rem; }
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; box-shadow: 0 8px 20px rgba(124, 58, 237, 0.35);
}
.btn--primary:hover { transform: translateY(-1px); color: #fff; box-shadow: 0 12px 28px rgba(124, 58, 237, 0.4); }
.btn--ghost { background: #fff; color: var(--text); border: 1px solid var(--surface); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.banner {
  background: linear-gradient(90deg, #ede9fe, #e0e7ff);
  border-bottom: 1px solid #ddd6fe;
  padding: 0.65rem 0;
  font-size: 0.9rem;
  color: #4c1d95;
}
.banner .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }

.hero { padding: 2.5rem 0 3rem; }
.hero__grid { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 900px) { .hero__grid { grid-template-columns: 1.05fr 0.95fr; } }
.eyebrow { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.72rem; color: var(--accent); font-weight: 700; margin: 0 0 0.75rem; }
.hero h1 { font-size: clamp(1.9rem, 4vw, 2.85rem); line-height: 1.12; margin: 0 0 1rem; letter-spacing: -0.02em; }
.lead { color: var(--muted); font-size: 1.125rem; margin: 0 0 1.5rem; max-width: 38em; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.75rem; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 1.5rem 2rem; list-style: none; padding: 0; margin: 0; }
.hero__stats strong { display: block; font-size: 1.3rem; color: var(--text); }
.hero__stats span { font-size: 0.8rem; color: var(--muted); }

.platform-preview {
  background: var(--bg-alt); border: 1px solid var(--surface); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1rem; display: grid; gap: 0.65rem;
}
.platform-preview__row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.7rem 0.85rem; background: var(--bg); border-radius: 10px; font-size: 0.88rem;
}
.platform-preview__row em { font-style: normal; font-size: 0.78rem; color: var(--muted); }
.platform-preview__row--ok em { color: var(--ok); font-weight: 600; }
.badge { font-size: 0.65rem; font-weight: 800; padding: 0.15rem 0.45rem; border-radius: 6px; text-transform: uppercase; }
.badge--hot { background: #fee2e2; color: var(--hot); }
.badge--new { background: #dbeafe; color: var(--new); }

.section { padding: 3rem 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--surface); }
.section h2 { font-size: clamp(1.45rem, 3vw, 2rem); margin: 0 0 0.35rem; letter-spacing: -0.02em; }
.section__lead { color: var(--muted); margin: 0 0 1.75rem; max-width: 42em; }

.toolbar { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.tags { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.tags__label { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.tag {
  font-size: 0.8rem; padding: 0.35rem 0.75rem; border-radius: 999px;
  background: #fff; border: 1px solid var(--surface); color: var(--text); font-weight: 500;
}
.tag:hover { border-color: var(--accent); color: var(--accent); }
.search-wrap { position: relative; min-width: min(280px, 100%); }
.search-wrap input {
  width: 100%; padding: 0.6rem 1rem 0.6rem 2.25rem; border: 1px solid var(--surface);
  border-radius: 10px; font-size: 0.92rem; background: #fff;
}
.search-wrap::before {
  content: "⌕"; position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%);
  color: var(--muted); font-size: 1rem;
}

.checker-grid {
  display: grid; gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.checker-card {
  background: #fff; border: 1px solid var(--surface); border-radius: var(--radius);
  padding: 1.15rem 1.2rem; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 0.85rem;
  transition: border-color 0.15s, transform 0.15s;
}
.checker-card:hover { border-color: #c4b5fd; transform: translateY(-2px); }
.checker-card__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; }
.checker-card__title { display: flex; align-items: center; gap: 0.6rem; margin: 0; font-size: 1.05rem; }
.checker-card__icon {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  font-size: 1.1rem; font-weight: 700; color: #fff;
}
.checker-card__types { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.45rem; }
.checker-card__types li a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.5rem 0.65rem; border-radius: 8px; background: var(--bg); color: var(--text); font-size: 0.88rem;
}
.checker-card__types li a:hover { background: #ede9fe; color: var(--accent); }
.checker-card__types small { color: var(--muted); font-size: 0.75rem; }
.checker-card__cta { margin-top: auto; }
.checker-card.is-hidden { display: none; }

.cards { display: grid; gap: 1.25rem; }
@media (min-width: 768px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: #fff; border: 1px solid var(--surface); border-radius: var(--radius);
  padding: 1.35rem; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.blog-grid {
  display: grid; gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}
.blog-card {
  background: #fff; border: 1px solid var(--surface); border-radius: var(--radius);
  padding: 1.35rem; box-shadow: var(--shadow); display: flex; flex-direction: column;
}
.blog-card h3 { margin: 0.5rem 0; font-size: 1.1rem; line-height: 1.35; }
.blog-card h3 a { color: var(--text); }
.blog-card h3 a:hover { color: var(--accent); }
.blog-card p { margin: 0; color: var(--muted); font-size: 0.92rem; flex: 1; }
.blog-card__meta { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.blog-card__link { margin-top: 1rem; font-weight: 600; font-size: 0.9rem; }

.article { padding: 2rem 0 4rem; }
.article__header { max-width: 720px; margin-bottom: 2rem; }
.article h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); line-height: 1.15; margin: 0.5rem 0 1rem; }
.article__meta { color: var(--muted); font-size: 0.9rem; }
.article__content { max-width: 720px; }
.article__content h2 { font-size: 1.35rem; margin: 2rem 0 0.75rem; }
.article__content h3 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }
.article__content p { margin: 0 0 1rem; color: #334155; }
.article__content ul { margin: 0 0 1rem; padding-left: 1.25rem; color: #334155; }
.article__content li { margin-bottom: 0.35rem; }
.keywords {
  display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1rem 0 1.5rem; list-style: none; padding: 0;
}
.keywords li {
  font-size: 0.78rem; padding: 0.25rem 0.55rem; border-radius: 6px;
  background: #ede9fe; color: #5b21b6;
}
.article-cta {
  margin: 2.5rem 0; padding: 1.5rem; border-radius: var(--radius);
  background: linear-gradient(135deg, #ede9fe, #e0e7ff); border: 1px solid #ddd6fe;
}
.article-cta h2 { margin: 0 0 0.5rem; font-size: 1.25rem; }
.article-cta p { margin: 0 0 1rem; color: var(--muted); }

.breadcrumb { font-size: 0.85rem; color: var(--muted); margin-bottom: 1rem; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }

.faq details {
  background: #fff; border: 1px solid var(--surface); border-radius: var(--radius);
  padding: 1rem 1.2rem; margin-bottom: 0.65rem;
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 0.75rem 0 0; color: var(--muted); }

.cta-block {
  padding: 3.5rem 0; background: linear-gradient(180deg, #ede9fe 0%, var(--bg) 100%);
  text-align: center;
}
.cta-block h2 { margin: 0 0 0.5rem; }
.cta-block p { color: var(--muted); margin: 0 0 1.25rem; }

.footer {
  border-top: 1px solid var(--surface); padding: 2rem 0; background: #fff;
}
.footer__grid {
  display: grid; gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.footer h4 { margin: 0 0 0.75rem; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 0.4rem; font-size: 0.9rem; }
.footer__bottom {
  margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--surface);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  font-size: 0.88rem; color: var(--muted);
}
.footer__bottom p { margin: 0; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }