* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #222;
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
}

body.yz-body {
  min-width: 320px;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.yz-shell {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
}

.yz-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 4px 24px rgba(20, 30, 45, 0.08);
}

.yz-topbar {
  background: #303642;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
}

.yz-topbar .yz-shell {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 6px 0;
}

.yz-topbar span {
  white-space: nowrap;
}

.yz-nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.yz-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
}

.yz-logo img {
  width: 222px;
  max-height: 58px;
  object-fit: contain;
}

.yz-main-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.yz-main-nav ul {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.yz-main-nav li {
  position: relative;
}

.yz-main-nav > ul > li > a {
  display: flex;
  align-items: center;
  min-height: 76px;
  padding: 0 16px;
  color: #1f2933;
  font-size: 15px;
  font-weight: 600;
}

.yz-main-nav > ul > li:hover > a,
.yz-main-nav > ul > li.is-active > a {
  color: #b01f2a;
}

.yz-subnav {
  position: absolute;
  left: 50%;
  top: 76px;
  display: grid;
  min-width: 150px;
  transform: translateX(-50%) translateY(8px);
  padding: 8px 0;
  background: #fff;
  box-shadow: 0 18px 40px rgba(18, 25, 38, 0.15);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.yz-main-nav li:hover .yz-subnav {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.yz-subnav a {
  display: block;
  padding: 9px 18px;
  color: #4b5563;
  font-size: 14px;
  white-space: nowrap;
}

.yz-subnav a:hover {
  color: #b01f2a;
  background: #f7f4ee;
}

.yz-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid #d7dbe0;
  background: #fff;
  color: #1f2933;
  cursor: pointer;
}

.yz-menu-toggle span,
.yz-menu-toggle span::before,
.yz-menu-toggle span::after {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  content: "";
}

.yz-menu-toggle span {
  position: relative;
}

.yz-menu-toggle span::before,
.yz-menu-toggle span::after {
  position: absolute;
  left: 0;
}

.yz-menu-toggle span::before {
  top: -6px;
}

.yz-menu-toggle span::after {
  top: 6px;
}

.yz-hero {
  position: relative;
  min-height: clamp(520px, 72vh, 760px);
  overflow: hidden;
  background: #111827;
}

.yz-hero-track {
  position: absolute;
  inset: 0;
}

.yz-hero-slide {
  position: absolute;
  inset: 0;
  background-position: center;
  background-size: cover;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.yz-hero-slide.is-active {
  opacity: 1;
}

.yz-hero-slide::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 18, 27, 0.74), rgba(12, 18, 27, 0.32), rgba(12, 18, 27, 0.12));
  content: "";
}

.yz-hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: clamp(520px, 72vh, 760px);
  align-items: center;
  padding: 58px 0 92px;
  color: #fff;
}

.yz-hero-kicker {
  margin: 0 0 14px;
  color: #f4c56c;
  font-size: clamp(15px, 2vw, 20px);
  font-weight: 700;
}

.yz-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.12;
  font-weight: 800;
}

.yz-hero p {
  max-width: 760px;
  margin: 22px 0 34px;
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(16px, 2vw, 20px);
}

.yz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.yz-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-weight: 700;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.yz-btn-primary {
  background: #b01f2a;
  color: #fff;
}

.yz-btn-primary:hover {
  background: #8e1720;
}

.yz-btn-ghost {
  border-color: rgba(255, 255, 255, 0.72);
  color: #fff;
}

.yz-btn-ghost:hover {
  background: #fff;
  color: #b01f2a;
}

.yz-hero-dots {
  position: absolute;
  left: 50%;
  bottom: 28px;
  z-index: 4;
  display: flex;
  gap: 10px;
  transform: translateX(-50%);
}

.yz-hero-dots button {
  width: 34px;
  height: 4px;
  border: 0;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
}

.yz-hero-dots button.is-active {
  background: #f4c56c;
}

.yz-notice {
  position: relative;
  z-index: 5;
  margin-top: -38px;
}

.yz-notice-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 20px 24px;
  background: #fff;
  box-shadow: 0 16px 42px rgba(20, 30, 45, 0.12);
}

.yz-notice img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.yz-notice strong {
  color: #b01f2a;
}

.yz-notice p {
  margin: 0;
  color: #46515f;
}

.yz-section {
  padding: 86px 0;
}

.yz-section-soft {
  background: #f5f7f8;
}

.yz-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 34px;
}

.yz-eyebrow {
  display: block;
  margin-bottom: 8px;
  color: #b01f2a;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.yz-section h2,
.yz-inner-title h1 {
  margin: 0;
  color: #17202b;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.22;
}

.yz-section-head p {
  max-width: 520px;
  margin: 0;
  color: #65717f;
}

.yz-about-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 56px;
  align-items: center;
}

.yz-about-media {
  position: relative;
}

.yz-about-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.yz-about-badge {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 148px;
  padding: 18px;
  background: #b01f2a;
  color: #fff;
  text-align: center;
}

.yz-about-badge strong {
  display: block;
  font-size: 38px;
  line-height: 1;
}

.yz-about-copy p {
  margin: 16px 0 0;
  color: #4d5966;
}

.yz-values {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.yz-values li {
  padding: 6px 12px;
  background: #f7f4ee;
  color: #9b1721;
  font-size: 14px;
  font-weight: 700;
}

.yz-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 34px;
}

.yz-stat {
  padding: 22px 18px;
  border-left: 3px solid #b01f2a;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-stat strong {
  display: block;
  color: #17202b;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1;
}

.yz-stat span {
  color: #65717f;
  font-size: 14px;
}

.yz-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.yz-card {
  overflow: hidden;
  background: #fff;
  box-shadow: 0 14px 32px rgba(20, 30, 45, 0.09);
}

.yz-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.yz-card:hover img {
  transform: scale(1.04);
}

.yz-card-body {
  padding: 22px;
}

.yz-card h3 {
  margin: 0 0 8px;
  color: #17202b;
  font-size: 20px;
  line-height: 1.35;
}

.yz-card p {
  margin: 0;
  color: #65717f;
}

.yz-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.yz-chip {
  padding: 8px 14px;
  border: 1px solid #d7dbe0;
  background: #fff;
  color: #344054;
  font-weight: 700;
}

.yz-chip:hover,
.yz-chip.is-active {
  border-color: #b01f2a;
  background: #b01f2a;
  color: #fff;
}

.yz-news-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
}

.yz-news-feature {
  min-height: 100%;
}

.yz-news-list {
  display: grid;
  gap: 16px;
}

.yz-news-row {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(20, 30, 45, 0.08);
}

.yz-date {
  display: grid;
  place-items: center;
  min-height: 74px;
  background: #303642;
  color: #fff;
  text-align: center;
}

.yz-date strong {
  display: block;
  font-size: 28px;
  line-height: 1;
}

.yz-date span {
  display: block;
  font-size: 12px;
}

.yz-news-row h3 {
  margin: 0 0 6px;
  color: #17202b;
  font-size: 18px;
}

.yz-news-row p {
  margin: 0;
  color: #65717f;
  font-size: 14px;
}

.yz-strength-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.yz-strength {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  color: #fff;
}

.yz-strength img {
  width: 100%;
  height: 100%;
  min-height: 310px;
  object-fit: cover;
}

.yz-strength::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 18, 27, 0.08), rgba(12, 18, 27, 0.76));
  content: "";
}

.yz-strength-body {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 24px;
}

.yz-strength-body h3 {
  margin: 0 0 8px;
  font-size: 21px;
}

.yz-strength-body p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

.yz-cta {
  background: #b01f2a;
  color: #fff;
}

.yz-cta .yz-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding: 46px 0;
}

.yz-cta h2 {
  margin: 0 0 8px;
  color: #fff;
  font-size: clamp(26px, 4vw, 40px);
}

.yz-cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
}

.yz-cta .yz-btn {
  background: #fff;
  color: #b01f2a;
  white-space: nowrap;
}

.yz-inner-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: #17202b;
}

.yz-inner-hero::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(12, 18, 27, 0.72), rgba(12, 18, 27, 0.28)), var(--inner-bg);
  background-position: center;
  background-size: cover;
  content: "";
}

.yz-inner-hero .yz-shell {
  position: relative;
  z-index: 2;
}

.yz-inner-hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.18;
}

.yz-breadcrumb {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.78);
}

.yz-breadcrumb a {
  color: #fff;
}

.yz-inner-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 36px;
  align-items: start;
}

.yz-side {
  position: sticky;
  top: 110px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-side-title {
  padding: 18px 20px;
  background: #b01f2a;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}

.yz-side a {
  display: block;
  padding: 14px 20px;
  border-bottom: 1px solid #edf0f2;
  color: #344054;
  font-weight: 700;
}

.yz-side a:hover,
.yz-side a.on {
  color: #b01f2a;
  background: #f7f4ee;
}

.yz-content {
  min-width: 0;
}

.yz-content-panel {
  padding: 34px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-content-panel h1,
.yz-content-panel h2,
.yz-content-panel h3 {
  color: #17202b;
}

.yz-content-panel p {
  color: #4d5966;
}

.yz-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.yz-list-item {
  display: block;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-list-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.yz-list-item-body {
  padding: 20px;
}

.yz-list-item h3 {
  margin: 0 0 8px;
  color: #17202b;
  font-size: 19px;
  line-height: 1.35;
}

.yz-list-item p {
  margin: 0;
  color: #65717f;
}

.yz-news-page-list {
  display: grid;
  gap: 18px;
}

.yz-news-page-item {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 22px;
  padding: 18px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-news-page-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.yz-news-page-item h3 {
  margin: 0 0 8px;
  color: #17202b;
  font-size: 20px;
}

.yz-news-page-item p {
  margin: 0 0 12px;
  color: #65717f;
}

.yz-muted {
  color: #7d8895;
  font-size: 14px;
}

.yz-pages {
  margin-top: 34px;
  text-align: center;
}

.yz-pages a,
.yz-pages span {
  display: inline-flex;
  min-width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  margin: 0 3px 6px;
  border: 1px solid #d7dbe0;
  color: #344054;
}

.yz-pages a:hover,
.yz-pages .current {
  border-color: #b01f2a;
  background: #b01f2a;
  color: #fff;
}

.yz-article {
  padding: 40px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-article h1 {
  margin: 0 0 16px;
  color: #17202b;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.3;
}

.yz-article-meta {
  margin-bottom: 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid #edf0f2;
  color: #7d8895;
}

.yz-article-body {
  color: #384452;
}

.yz-article-body img {
  height: auto;
  margin: 18px auto;
}

.yz-related {
  margin-top: 34px;
}

.yz-related h2 {
  margin: 0 0 18px;
  font-size: 24px;
}

.yz-related-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.yz-category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.yz-category-card {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  justify-content: center;
  padding: 26px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(20, 30, 45, 0.08);
}

.yz-category-card h3 {
  margin: 0 0 10px;
  color: #17202b;
  font-size: 22px;
}

.yz-category-card span {
  color: #b01f2a;
  font-weight: 800;
}

.yz-footer {
  background: #222833;
  color: rgba(255, 255, 255, 0.78);
}

.yz-footer-main {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.25fr;
  gap: 36px;
  padding: 58px 0 42px;
}

.yz-footer h2,
.yz-footer h3 {
  margin: 0 0 18px;
  color: #fff;
}

.yz-footer h2 {
  font-size: 24px;
}

.yz-footer h3 {
  font-size: 18px;
}

.yz-footer p {
  margin: 0 0 10px;
}

.yz-footer a {
  display: block;
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.78);
}

.yz-footer a:hover {
  color: #f4c56c;
}

.yz-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  text-align: center;
}

.yz-backtop {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 0;
  background: #b01f2a;
  color: #fff;
  cursor: pointer;
}

.yz-backtop.is-visible {
  display: grid;
}

@media (max-width: 1080px) {
  .yz-main-nav > ul > li > a {
    padding: 0 10px;
    font-size: 14px;
  }

  .yz-card-grid,
  .yz-list-grid,
  .yz-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .yz-strength-grid,
  .yz-related-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .yz-shell {
    width: min(100% - 28px, 1200px);
  }

  .yz-topbar {
    display: none;
  }

  .yz-nav-wrap {
    min-height: 66px;
  }

  .yz-logo {
    min-width: 0;
  }

  .yz-logo img {
    width: 190px;
  }

  .yz-menu-toggle {
    display: inline-flex;
  }

  .yz-main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 66px;
    display: none;
    background: #fff;
    box-shadow: 0 18px 35px rgba(20, 30, 45, 0.14);
  }

  .yz-header.is-open .yz-main-nav {
    display: block;
  }

  .yz-main-nav ul {
    display: block;
  }

  .yz-main-nav > ul > li > a {
    min-height: 46px;
    padding: 0 18px;
    border-top: 1px solid #edf0f2;
  }

  .yz-subnav {
    position: static;
    display: none;
    min-width: 0;
    transform: none;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
  }

  .yz-main-nav li:hover .yz-subnav {
    display: grid;
    transform: none;
  }

  .yz-subnav a {
    padding-left: 32px;
    background: #f8fafb;
  }

  .yz-hero,
  .yz-hero-content {
    min-height: 560px;
  }

  .yz-notice-inner {
    grid-template-columns: auto 1fr;
  }

  .yz-notice-inner .yz-btn {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .yz-section {
    padding: 62px 0;
  }

  .yz-section-head,
  .yz-about-grid,
  .yz-news-layout,
  .yz-inner-layout,
  .yz-cta .yz-shell {
    display: block;
  }

  .yz-section-head p,
  .yz-about-copy,
  .yz-news-list {
    margin-top: 18px;
  }

  .yz-stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .yz-side {
    position: static;
    margin-bottom: 24px;
  }

  .yz-side a {
    display: inline-flex;
    border-right: 1px solid #edf0f2;
  }

  .yz-news-page-item {
    grid-template-columns: 1fr;
  }

  .yz-footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .yz-cta .yz-btn {
    margin-top: 20px;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .yz-logo img {
    width: 164px;
  }

  .yz-hero,
  .yz-hero-content {
    min-height: 520px;
  }

  .yz-hero-content {
    padding: 42px 0 78px;
  }

  .yz-notice {
    margin-top: -24px;
  }

  .yz-notice-inner {
    padding: 16px;
  }

  .yz-card-grid,
  .yz-list-grid,
  .yz-strength-grid,
  .yz-related-list,
  .yz-category-grid,
  .yz-footer-main {
    grid-template-columns: 1fr;
  }

  .yz-stat-grid {
    grid-template-columns: 1fr;
  }

  .yz-card-body,
  .yz-content-panel,
  .yz-article {
    padding: 22px;
  }

  .yz-news-row {
    grid-template-columns: 70px 1fr;
    gap: 14px;
    padding: 14px;
  }

  .yz-date {
    min-height: 64px;
  }

  .yz-date strong {
    font-size: 24px;
  }
}