:root {
  --ym-blue: #0d47a1;
  --ym-red: #e31837;
  --ym-dark: #0a0f1e;
  --ym-accent: #00b0ff;
  --ym-gold: #ffd600;
  --ym-soft: #f4f7fc;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Inter", system-ui, sans-serif;
  color: #1a1a2e;
  background: #fff;
  overflow-x: hidden;
}

.navbar-ym {
  background: rgba(10, 15, 30, 0.97);
  backdrop-filter: blur(12px);
  transition: all 0.3s;
  border-bottom: 2px solid var(--ym-red);
}
.navbar-ym .navbar-nav .nav-link {
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.2s;
}
.navbar-ym .navbar-nav .nav-link:hover,
.navbar-ym .navbar-nav .nav-link.active {
  color: var(--ym-red);
}
.navbar-ym .navbar-brand img {
  height: 42px;
}

.btn-ym {
  background: linear-gradient(135deg, var(--ym-red), #ff4d4f);
  border: none;
  color: #fff;
  border-radius: 999px;
  font-weight: 700;
  padding: 12px 24px;
  box-shadow: 0 10px 25px rgba(227, 24, 55, 0.25);
}
.btn-ym:hover,
.btn-ym:focus {
  color: #fff;
  transform: translateY(-1px);
}

.page-header {
  background: linear-gradient(
    135deg,
    var(--ym-dark) 0%,
    #0d1b3e 50%,
    #102040 100%
  );
  padding: 140px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(227, 24, 55, 0.12), transparent 70%);
  top: -120px;
  right: -120px;
  border-radius: 50%;
}
.page-header::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(0, 176, 255, 0.08), transparent 70%);
  bottom: -80px;
  left: -50px;
  border-radius: 50%;
}
.page-header .container {
  position: relative;
  z-index: 2;
}

.breadcrumb-nav .breadcrumb-item-link {
  color: rgba(255, 255, 255, 0.62);
  text-decoration: none;
}
.breadcrumb-nav .breadcrumb-item.active,
.breadcrumb-nav .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255, 255, 255, 0.88);
}

.article-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-title {
  font-size: clamp(2.15rem, 5vw, 3.5rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.12;
  margin: 18px 0 14px;
  max-width: 920px;
}
.page-title-accent {
  background: linear-gradient(90deg, var(--ym-red), #ff6b6b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-intro {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.04rem;
  line-height: 1.85;
  max-width: 840px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.92rem;
}

.hero-figure-wrap {
  margin: 28px 0 0;
  background: #fff;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(5, 13, 34, 0.18);
}
.hero-figure-image {
  width: 100%;
  display: block;
  height: auto;
}
.hero-figure-caption {
  padding: 16px 20px;
  background: #fff;
  color: #56657f;
  font-size: 0.92rem;
  line-height: 1.7;
}

.article-shell {
  padding: 56px 0 84px;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
}
.section-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 800;
  color: var(--ym-dark);
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 18px;
}
.section-title::after {
  content: "";
  position: absolute;
  width: 64px;
  height: 4px;
  background: var(--ym-red);
  border-radius: 999px;
  left: 0;
  bottom: 0;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}
.article-main {
  min-width: 0;
}

.summary-box,
.article-content,
.toc-card,
.promo-box,
.author-box,
.share-box,
.faq-box,
.related-card,
.variant-card,
.mini-cta,
.related-wrap {
  background: #fff;
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(16, 35, 74, 0.08);
}

.summary-box {
  padding: 26px;
  margin-bottom: 24px;
}
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.summary-item {
  background: #f6f9ff;
  border-radius: 18px;
  padding: 18px;
}
.summary-item-title {
  display: block;
  margin-bottom: 8px;
  color: #102143;
  font-weight: 800;
}
.summary-item-copy {
  margin: 0;
  color: #5e6c87;
  line-height: 1.7;
  font-size: 0.95rem;
}

.article-content {
  padding: 34px;
}
.article-paragraph {
  color: #50607c;
  line-height: 1.95;
  margin-bottom: 1.15rem;
}
.article-subheading,
.article-subsubheading {
  color: #102143;
  scroll-margin-top: 110px;
}
.article-subheading {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  margin: 42px 0 16px;
}
.article-subsubheading {
  font-size: 1.16rem;
  font-weight: 800;
  margin: 28px 0 12px;
}
.article-list {
  color: #50607c;
  line-height: 1.9;
  padding-left: 1.1rem;
}

.article-quote {
  margin: 28px 0;
  padding: 22px 24px;
  border-left: 5px solid var(--ym-red);
  background: linear-gradient(135deg, #fff4f6 0%, #f9fbff 100%);
  border-radius: 0 18px 18px 0;
  color: #24395c;
  font-weight: 600;
  line-height: 1.8;
}

.article-figure {
  margin: 24px 0;
}
.article-figure-image {
  width: 100%;
  border-radius: 22px;
  display: block;
  background: #f5f8fc;
}
.article-figure-caption {
  color: #60708c;
  font-size: 0.92rem;
  margin-top: 10px;
  line-height: 1.7;
}

.read-more-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.read-more-item {
  background: #f7f9fd;
  border-radius: 18px;
  padding: 18px;
  border: 1px solid #edf1f8;
}
.read-more-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ym-red);
  font-weight: 800;
  margin-bottom: 8px;
}
.read-more-link {
  text-decoration: none;
  color: #102143;
  font-weight: 800;
  line-height: 1.5;
}

.variant-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.variant-card,
.related-card {
  overflow: hidden;
}
.variant-card-image,
.related-card-image {
  width: 100%;
  height: 210px;
  object-fit: contain;
  background: #f8fbff;
  display: block;
}
.variant-card-body,
.related-card-body {
  padding: 20px;
}
.variant-price {
  color: var(--ym-red);
  font-weight: 800;
  margin-bottom: 8px;
}
.variant-card-copy,
.related-card-copy {
  color: #5e6c87;
  line-height: 1.7;
  margin-bottom: 16px;
}

.promo-box {
  padding: 22px;
  margin: 26px 0;
}
.promo-box-link {
  display: block;
  text-decoration: none;
}
.promo-box-image {
  width: 100%;
  border-radius: 20px;
  display: block;
}
.promo-box-copy {
  margin: 12px 0 0;
  color: #5e6c87;
  font-size: 0.95rem;
}

.mini-cta {
  margin: 30px 0;
  padding: 28px;
  background: linear-gradient(135deg, #0f2145 0%, #17428a 100%);
  color: #fff;
}
.mini-cta-title {
  margin-bottom: 10px;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 800;
}
.mini-cta-copy {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 18px;
  line-height: 1.8;
}

.toc-card {
  position: static;
  padding: 22px;
}
.toc-summary {
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  color: #102143;
}
.toc-summary::-webkit-details-marker {
  display: none;
}
.toc-nav-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}
.toc-item-h3 {
  padding-left: 16px;
}
.toc-link {
  text-decoration: none;
  color: #50607c;
  font-size: 0.95rem;
  line-height: 1.55;
}
.toc-link:hover {
  color: var(--ym-red);
}

.share-box,
.author-box,
.faq-box,
.related-wrap {
  padding: 24px;
  margin-top: 20px;
}
.share-actions {
  display: grid;
  gap: 10px;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  background: #f5f8fd;
  color: #102143;
  border: 1px solid #e7edf6;
}
.share-btn:hover {
  color: #102143;
}

.author-box {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.author-avatar {
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--ym-red), #ff6b6b);
  color: #fff;
  font-size: 1.35rem;
  font-weight: 900;
  flex: 0 0 auto;
}
.author-copy {
  margin: 0;
  color: #5e6c87;
  line-height: 1.75;
}

.faq-list {
  display: grid;
  gap: 12px;
}
.faq-item {
  border: 1px solid #edf1f8;
  border-radius: 18px;
  overflow: hidden;
  background: #f8fbff;
}
.faq-summary {
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  color: #102143;
  padding: 18px 20px;
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-copy {
  margin: 0;
  padding: 0 20px 18px;
  color: #5e6c87;
  line-height: 1.75;
}

.btn-read-more {
  background: transparent;
  border: 1.5px solid var(--ym-red);
  color: var(--ym-red);
  padding: 8px 18px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.88rem;
  transition: all 0.25s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-read-more:hover {
  background: var(--ym-red);
  color: #fff;
}

.footer-ym {
  background: #0b1020;
  color: rgba(255, 255, 255, 0.72);
}
.footer-link-news {
  color: #fff;
  text-decoration: none;
}

.wa-float,
.top-float {
  position: fixed;
  right: 24px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
  z-index: 55;
}
.wa-float {
  bottom: 24px;
  background: #25d366;
  font-size: 1.5rem;
}
.top-float {
  bottom: 92px;
  background: linear-gradient(135deg, var(--ym-blue), #1e88e5);
  font-size: 1.3rem;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s;
}
.top-float.show {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 991.98px) {
  .article-layout,
  .summary-grid,
  .variant-grid,
  .related-grid,
  .read-more-grid {
    grid-template-columns: 1fr;
  }
  .toc-card {
    position: static;
  }
}

@media (max-width: 767.98px) {
  .article-layout {
    display: flex;
    flex-direction: column;
  }
  .article-shell {
    padding: 28px 0 72px;
  }
  .article-layout > aside {
    display: contents;
  }
  .article-layout > aside .toc-card {
    order: 1;
    padding: 18px;
    margin-bottom: 18px;
  }
  .article-layout > .article-main {
    order: 2;
  }
  .article-layout > aside .share-box {
    order: 3;
  }
  .article-layout > aside .author-box {
    order: 4;
  }
  .page-header {
    padding: 124px 0 32px;
  }
  .article-content,
  .summary-box,
  .share-box,
  .author-box,
  .faq-box,
  .toc-card,
  .promo-box,
  .mini-cta,
  .related-wrap {
    padding: 22px;
  }
  .meta-row {
    gap: 12px;
  }
  .author-box {
    flex-direction: column;
  }
}