:root {
  --mn-blue: #0062a4;
  --mn-blue-dark: #004f86;
  --mn-sky: #2aa9dc;
  --mn-ink: #1f2933;
  --mn-muted: #5b6470;
  --mn-line: #dde5ec;
  --mn-soft: #f4f7fa;
  --mn-white: #fff;
  --mn-shadow: 0 18px 44px rgba(15, 35, 54, .14);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--mn-ink);
  background: #fff;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

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

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

p,
h1,
h2,
h3 {
  margin: 0;
}

.site-header {
  min-height: 80px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto auto;
  align-items: center;
  gap: 28px;
  padding: 0 42px;
  background: #fff;
  border-bottom: 1px solid var(--mn-line);
  position: sticky;
  top: 0;
  z-index: 40;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 900;
  color: var(--mn-blue-dark);
}

.brand img {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand span {
  max-width: 320px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 800;
  color: var(--mn-blue-dark);
}

.desktop-nav a {
  padding: 28px 0;
  border-bottom: 3px solid transparent;
}

.desktop-nav a[aria-current="page"] {
  color: var(--mn-blue);
  border-color: var(--mn-blue);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 28px;
  background: var(--mn-blue);
  color: #fff;
  font-weight: 900;
  border-radius: 2px;
  box-shadow: none;
}

.btn.secondary {
  background: #fff;
  color: var(--mn-blue);
  border: 2px solid var(--mn-blue);
}

.btn.light {
  background: #fff;
  color: var(--mn-blue-dark);
}

.mobile-menu {
  display: none;
  position: relative;
}

.mobile-menu summary {
  width: 62px;
  height: 62px;
  display: grid;
  place-content: center;
  gap: 5px;
  background: var(--mn-sky);
  list-style: none;
  cursor: pointer;
}

.mobile-menu summary::-webkit-details-marker {
  display: none;
}

.mobile-menu summary span {
  width: 24px;
  height: 2px;
  background: #fff;
}

.mobile-panel {
  position: absolute;
  right: 0;
  top: 70px;
  width: min(320px, calc(100vw - 28px));
  padding: 18px;
  background: #fff;
  box-shadow: var(--mn-shadow);
  border: 1px solid var(--mn-line);
  display: grid;
  gap: 4px;
}

.mobile-panel a {
  padding: 12px 10px;
  font-weight: 800;
  color: var(--mn-blue-dark);
}

.mobile-panel a[aria-current="page"] {
  color: var(--mn-blue);
}

.mobile-cta {
  background: var(--mn-blue);
  color: #fff !important;
  text-align: center;
}

.source-photo-hero {
  position: relative;
  min-height: 620px;
  overflow: hidden;
  color: #fff;
}

.source-photo-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, .55), rgba(0, 0, 0, .20) 58%, rgba(0, 0, 0, .45));
}

.hero-copy {
  position: relative;
  z-index: 2;
  min-height: 620px;
  width: min(880px, calc(100vw - 56px));
  margin-left: clamp(24px, 5vw, 70px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 0 150px;
}

.hero-copy h1,
.inner-hero-copy h1,
.article-hero-copy h1 {
  font-size: clamp(48px, 7.2vw, 92px);
  line-height: .98;
  font-weight: 950;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: normal;
}

.hero-copy p:not(.eyebrow),
.inner-hero-copy p:not(.eyebrow),
.article-hero-copy p:not(.eyebrow) {
  margin-top: 24px;
  max-width: 760px;
  font-size: clamp(18px, 2vw, 25px);
  font-weight: 700;
}

.eyebrow {
  margin-bottom: 14px;
  color: var(--mn-blue);
  font-size: 14px;
  font-weight: 950;
  letter-spacing: 3px;
}

.eyebrow.light {
  color: #fff;
}

.hero-copy .btn {
  width: max-content;
  margin-top: 34px;
}

.path-cards {
  width: min(1360px, calc(100vw - 28px));
  margin: 14px auto 130px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

.path-card {
  min-height: 310px;
  padding: 34px;
  display: grid;
  align-content: end;
  gap: 16px;
  color: var(--mn-ink);
  background: #fff;
  border: 1px solid var(--mn-line);
  border-top: 6px solid var(--mn-blue);
}

.path-card:nth-child(even) {
  color: #fff;
  background: var(--mn-blue);
  border-color: var(--mn-blue);
}

.path-card span {
  color: var(--mn-blue);
  font-size: 28px;
  font-weight: 950;
}

.path-card:nth-child(even) span {
  color: #fff;
}

.path-card strong {
  max-width: 280px;
  font-size: clamp(24px, 2.4vw, 34px);
  line-height: 1.1;
  font-weight: 950;
}

.path-card small {
  max-width: 300px;
  color: var(--mn-muted);
  font-size: 16px;
  font-weight: 750;
}

.path-card:nth-child(even) small {
  color: rgba(255, 255, 255, .86);
}

.network-split,
.home-articles,
.check-band,
.network-cta,
.contact-shell,
.sitemap-grid {
  width: min(1280px, calc(100vw - 56px));
  margin: 0 auto;
}

.network-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .95fr);
  gap: clamp(42px, 6vw, 92px);
  align-items: center;
  padding: 40px 0 110px;
}

.network-split h2,
.plain-hero h1,
.two-col-intro h2,
.check-band h2,
.network-cta h2,
.contact-intro h2,
.not-found h1 {
  color: var(--mn-ink);
  font-size: clamp(40px, 5.8vw, 72px);
  line-height: 1.08;
  font-weight: 950;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: normal;
}

.network-split p:not(.eyebrow),
.two-col-intro p,
.check-band p,
.network-cta p,
.contact-intro p,
.plain-hero p:not(.eyebrow),
.not-found p {
  margin-top: 24px;
  color: var(--mn-muted);
  font-size: 21px;
  font-weight: 650;
}

.network-ledger {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--mn-line);
}

.network-ledger div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 22px;
  padding: 28px 0;
  border-bottom: 1px solid var(--mn-line);
}

.network-ledger span {
  color: var(--mn-blue);
  font-size: 28px;
  font-weight: 950;
}

.network-ledger p {
  color: var(--mn-ink);
  font-size: 21px;
  font-weight: 850;
  line-height: 1.45;
}

.home-articles {
  margin-bottom: 96px;
  padding: clamp(34px, 5vw, 64px) 0 0;
  border-top: 6px solid var(--mn-blue);
}

.home-articles-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 34px;
  align-items: end;
  margin-bottom: 34px;
}

.home-articles h2 {
  font-size: clamp(32px, 3.5vw, 48px);
  line-height: 1.14;
  font-weight: 950;
}

.home-articles-head p:not(.eyebrow) {
  margin-top: 18px;
  max-width: 760px;
  color: var(--mn-muted);
  font-size: 19px;
  font-weight: 650;
}

.home-article-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.home-article-card {
  display: grid;
  grid-template-rows: auto 1fr;
  background: #fff;
  border: 1px solid var(--mn-line);
}

.home-article-image img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.home-article-card > div {
  padding: 26px;
}

.home-article-card time {
  color: var(--mn-blue);
  font-weight: 950;
}

.home-article-card h3 {
  margin-top: 12px;
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.16;
  font-weight: 950;
}

.home-article-card p {
  margin-top: 14px;
  color: var(--mn-muted);
  font-weight: 650;
}

.network-cta {
  margin-bottom: 96px;
  padding: 54px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 42px;
  align-items: center;
  border-top: 1px solid var(--mn-line);
  border-bottom: 1px solid var(--mn-line);
}

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

.inner-hero {
  min-height: 500px;
}

.inner-hero-copy,
.article-hero-copy {
  position: relative;
  z-index: 2;
  width: min(1120px, calc(100vw - 56px));
  min-height: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 34px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
  font-weight: 900;
  color: inherit;
  opacity: .88;
}

.breadcrumbs a::after {
  content: "/";
  margin-left: 12px;
  opacity: .6;
}

.overlap-slab {
  width: min(1280px, calc(100vw - 56px));
  margin: -62px auto 80px;
  position: relative;
  z-index: 5;
  background: #fff;
  box-shadow: var(--mn-shadow);
  padding: clamp(34px, 5vw, 64px);
}

.page-slab {
  margin-top: 0;
}

.two-col-intro {
  display: grid;
  grid-template-columns: minmax(280px, .7fr) minmax(0, 1fr);
  gap: 54px;
  align-items: start;
}

.benefit-rows {
  width: min(1180px, calc(100vw - 56px));
  margin: 0 auto 96px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--mn-line);
}

.benefit-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 36px;
  padding: 34px 0;
  border-bottom: 1px solid var(--mn-line);
}

.benefit-number {
  color: var(--mn-blue);
  font-size: 34px;
  font-weight: 950;
}

.benefit-row h2 {
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.15;
  font-weight: 950;
}

.benefit-row p {
  margin-top: 12px;
  color: var(--mn-muted);
  font-size: 18px;
  font-weight: 650;
}

.check-band {
  margin-bottom: 96px;
  padding: 56px;
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(360px, 1fr);
  gap: 54px;
  background: var(--mn-soft);
}

.check-band ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.check-band li {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  min-height: 68px;
  padding: 14px 18px;
  background: #fff;
  color: var(--mn-ink);
  font-size: 18px;
  font-weight: 850;
}

.check-band li span {
  color: var(--mn-blue);
  font-weight: 950;
}

.plain-hero {
  width: min(1280px, calc(100vw - 56px));
  margin: 0 auto;
  padding: 86px 0 76px;
}

.plain-hero > div {
  max-width: 960px;
}

.about-split {
  padding-top: 0;
}

.method-grid {
  width: min(1280px, calc(100vw - 56px));
  margin: 0 auto 96px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.method-grid article {
  min-height: 280px;
  padding: 30px;
  border: 1px solid var(--mn-line);
  background: #fff;
}

.method-grid span {
  color: var(--mn-blue);
  font-weight: 950;
}

.method-grid h2 {
  margin-top: 24px;
  font-size: 26px;
  line-height: 1.18;
  font-weight: 950;
}

.method-grid p {
  margin-top: 14px;
  color: var(--mn-muted);
  font-weight: 650;
}

.resource-hero {
  min-height: 500px;
}

.resource-slab {
  display: grid;
  grid-template-columns: minmax(280px, .42fr) minmax(0, 1fr);
  gap: 56px;
}

.resource-note {
  position: sticky;
  top: 112px;
  align-self: start;
  padding: 34px;
  background: var(--mn-soft);
  border-left: 5px solid var(--mn-blue);
}

.resource-note h2 {
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.16;
  font-weight: 950;
}

.resource-note p:not(.eyebrow) {
  margin-top: 18px;
  color: var(--mn-muted);
  font-weight: 650;
}

.descriptor-row {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  color: var(--mn-blue);
  font-weight: 900;
}

.descriptor-row span {
  padding-bottom: 4px;
  border-bottom: 3px solid var(--mn-line);
}

.resource-list {
  display: grid;
  gap: 28px;
}

.article-card {
  display: grid;
  grid-template-columns: .88fr 1fr;
  background: #fff;
  box-shadow: var(--mn-shadow);
}

.article-image img {
  width: 100%;
  height: 100%;
  min-height: 290px;
  object-fit: cover;
}

.article-card > div {
  padding: clamp(28px, 4vw, 48px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-card time {
  color: var(--mn-blue);
  font-weight: 950;
}

.article-card h3 {
  margin-top: 16px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.15;
  font-weight: 950;
}

.article-card p {
  margin-top: 16px;
  color: var(--mn-muted);
  font-size: 17px;
  font-weight: 650;
}

.article-hero {
  min-height: 620px;
}

.article-hero-copy {
  min-height: 620px;
  justify-content: flex-end;
  padding-bottom: 90px;
}

.article-shell {
  width: min(1120px, calc(100vw - 56px));
  margin: -54px auto 96px;
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 56px;
  padding: 54px;
  background: #fff;
  box-shadow: var(--mn-shadow);
}

.keypoints {
  align-self: start;
  padding: 28px;
  background: var(--mn-soft);
  border-left: 5px solid var(--mn-blue);
}

.keypoints h2,
.article-aux h2 {
  font-size: 22px;
  font-weight: 950;
}

.keypoints ol {
  margin: 18px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
  font-weight: 800;
  color: var(--mn-blue-dark);
}

.article-body {
  min-width: 0;
}

.article-body section + section {
  margin-top: 42px;
}

.article-body h2 {
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.16;
  font-weight: 950;
}

.article-body p {
  margin-top: 18px;
  color: var(--mn-muted);
  font-size: 19px;
  font-weight: 650;
}

.article-aux {
  grid-column: 2;
  display: grid;
  gap: 18px;
  border-top: 1px solid var(--mn-line);
  padding-top: 34px;
}

.article-aux ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--mn-blue-dark);
  font-weight: 800;
}

.article-aux-block a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--mn-line);
  color: var(--mn-blue-dark);
}

.contact-shell {
  margin-bottom: 96px;
  display: grid;
  grid-template-columns: minmax(0, .7fr) minmax(420px, 1fr);
  gap: 56px;
  align-items: start;
}

.contact-facts {
  margin: 32px 0;
  display: grid;
  gap: 10px;
  color: var(--mn-blue-dark);
  font-size: 19px;
  font-weight: 900;
}

.intent-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--mn-line);
}

.intent-list article {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--mn-line);
}

.intent-list span {
  color: var(--mn-blue);
  font-weight: 950;
}

.intent-list h3 {
  font-size: 24px;
  font-weight: 950;
}

.intent-list p {
  grid-column: 2;
  margin-top: 8px;
  color: var(--mn-muted);
  font-weight: 650;
}

.legal-list {
  width: min(1120px, calc(100vw - 56px));
  margin: 0 auto 96px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--mn-line);
}

.legal-list .policy-panel {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 30px;
  padding: 32px 0;
  border-bottom: 1px solid var(--mn-line);
}

.legal-list span {
  color: var(--mn-blue);
  font-size: 30px;
  font-weight: 950;
}

.legal-list h2 {
  font-size: 28px;
  font-weight: 950;
}

.legal-list p {
  margin-top: 12px;
  color: var(--mn-muted);
  font-weight: 650;
}

.sitemap-grid {
  margin-bottom: 96px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px;
}

.sitemap-grid > div {
  padding: 32px;
  background: var(--mn-soft);
}

.sitemap-grid h2 {
  margin-bottom: 18px;
  font-size: 28px;
  font-weight: 950;
}

.sitemap-grid a {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--mn-line);
  color: var(--mn-blue-dark);
  font-weight: 800;
}

.not-found {
  min-height: 62vh;
  width: min(900px, calc(100vw - 56px));
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.site-footer {
  border-top: 1px solid var(--mn-line);
  background: #fff;
}

.footer-main {
  width: min(1280px, calc(100vw - 56px));
  margin: 0 auto;
  padding: 54px 0;
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(240px, .7fr) minmax(280px, 1fr);
  gap: 42px;
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.footer-brand img {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  object-fit: contain;
}

.footer-brand strong {
  display: block;
  margin-top: 0;
  color: var(--mn-blue-dark);
  font-size: 20px;
}

.footer-links,
.footer-contact {
  display: grid;
  gap: 10px;
  color: var(--mn-muted);
  font-weight: 750;
}

.footer-links a,
.footer-contact a {
  color: var(--mn-blue-dark);
  font-weight: 900;
}

.footer-legal {
  border-top: 1px solid var(--mn-line);
}

.footer-legal > div {
  width: min(1280px, calc(100vw - 56px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--mn-muted);
  font-size: 14px;
}

.footer-legal a {
  color: var(--mn-blue-dark);
  font-weight: 850;
}

@media (max-width: 1100px) {
  .site-header {
    grid-template-columns: 1fr auto;
    padding: 0 22px;
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .path-cards,
  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .network-split,
  .home-articles-head,
  .two-col-intro,
  .check-band,
  .network-cta,
  .resource-slab,
  .contact-shell,
  .article-shell {
    grid-template-columns: 1fr;
  }

  .home-article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .resource-note {
    position: static;
  }

  .article-aux {
    grid-column: auto;
  }

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

@media (max-width: 700px) {
  .site-header {
    min-height: 66px;
    padding: 0 12px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand span {
    max-width: 160px;
    font-size: 14px;
  }

  .mobile-menu summary {
    width: 54px;
    height: 54px;
  }

  .source-photo-hero,
  .hero-copy,
  .inner-hero,
  .inner-hero-copy,
  .article-hero,
  .article-hero-copy {
    min-height: 520px;
  }

  .hero-copy,
  .inner-hero-copy,
  .article-hero-copy {
    width: min(100% - 28px, 680px);
    margin: 0 auto;
    padding-bottom: 64px;
  }

  .hero-copy {
    justify-content: flex-end;
  }

  .hero-copy h1,
  .inner-hero-copy h1,
  .article-hero-copy h1,
  .network-split h2,
  .plain-hero h1,
  .two-col-intro h2,
  .check-band h2,
  .network-cta h2,
  .contact-intro h2 {
    font-size: clamp(30px, 10vw, 42px);
    line-height: 1.12;
  }

  .hero-copy p:not(.eyebrow),
  .inner-hero-copy p:not(.eyebrow),
  .article-hero-copy p:not(.eyebrow),
  .network-split p:not(.eyebrow),
  .plain-hero p:not(.eyebrow),
  .two-col-intro p,
  .check-band p,
  .network-cta p,
  .contact-intro p {
    font-size: 17px;
  }

  .path-cards,
  .method-grid,
  .sitemap-grid {
    grid-template-columns: 1fr;
  }

  .path-cards {
    margin-bottom: 72px;
  }

  .path-card {
    min-height: 330px;
  }

  .network-split,
  .home-articles,
  .check-band,
  .network-cta,
  .contact-shell,
  .sitemap-grid,
  .plain-hero,
  .overlap-slab,
  .benefit-rows,
  .legal-list,
  .article-shell {
    width: calc(100vw - 28px);
  }

  .network-split,
  .plain-hero {
    padding: 56px 0;
  }

  .network-ledger div {
    grid-template-columns: 48px 1fr;
    gap: 16px;
  }

  .home-articles,
  .check-band,
  .network-cta,
  .article-shell,
  .overlap-slab {
    padding: 28px;
  }

  .home-articles-head {
    gap: 22px;
  }

  .home-articles-head .btn {
    width: 100%;
  }

  .home-article-grid {
    grid-template-columns: 1fr;
  }

  .home-article-image img {
    height: 220px;
  }

  .benefit-row,
.legal-list .policy-panel {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .article-image img {
    min-height: 220px;
  }

  .contact-shell {
    gap: 36px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    width: calc(100vw - 28px);
    padding: 38px 0;
  }

  .footer-legal > div {
    width: calc(100vw - 28px);
  }
}