:root {
  --red: #d60107;
  --deep-red: #a90005;
  --ink: #101318;
  --muted: #687181;
  --line: rgba(16, 19, 24, 0.12);
  --paper: #f5f6f8;
  --white: #ffffff;
  --charcoal: #11151d;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: #fff;
}

body.menu-open {
  overflow: hidden;
}

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

button {
  border: 0;
  color: inherit;
  font: inherit;
  background: transparent;
  cursor: pointer;
}

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

.sub-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 clamp(18px, 4vw, 52px);
  color: #fff;
  background: rgba(7, 10, 15, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sub-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 236px;
}

.sub-brand img {
  width: 72px;
  height: 50px;
  padding: 3px;
  object-fit: contain;
  background: #fff;
  border-radius: 4px;
}

.sub-brand span {
  display: grid;
  line-height: 1.1;
}

.sub-brand strong {
  font-size: 22px;
  font-weight: 800;
}

.sub-brand small {
  margin-top: 5px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
}

.sub-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2vw, 28px);
  flex: 1;
}

.sub-nav a {
  position: relative;
  padding: 28px 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 15px;
  white-space: nowrap;
}

.sub-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 20px;
  height: 2px;
  transform: scaleX(0);
  background: var(--red);
  transition: transform 0.2s ease;
}

.sub-nav a:hover,
.sub-nav a.is-active {
  color: #fff;
}

.sub-nav a:hover::after,
.sub-nav a.is-active::after {
  transform: scaleX(1);
}

.sub-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 800;
  white-space: nowrap;
}

.sub-phone svg {
  width: 21px;
  height: 21px;
  color: var(--red);
}

.sub-menu {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
}

.sub-menu svg {
  width: 26px;
  height: 26px;
}

.sub-hero {
  position: relative;
  min-height: 520px;
  display: grid;
  align-items: end;
  color: #fff;
  overflow: hidden;
}

.sub-hero::before,
.sub-hero::after {
  content: "";
  position: absolute;
  inset: 0;
}

.sub-hero::before {
  background: var(--hero-image) center / cover no-repeat;
  transform: scale(1.02);
}

.sub-hero::after {
  background: rgba(0, 0, 0, 0.58);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 94px 0 72px;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.crumbs span {
  color: rgba(255, 255, 255, 0.42);
}

.crumbs em {
  color: rgba(255, 255, 255, 0.92);
  font-style: normal;
}

.eyebrow {
  margin: 0 0 14px;
  color: #ff3338;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.sub-hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-desc {
  max-width: 760px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.primary-btn,
.plain-btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 22px;
  border-radius: 4px;
  font-weight: 800;
}

.primary-btn {
  background: var(--red);
}

.plain-btn {
  border: 1px solid rgba(255, 255, 255, 0.45);
}

.primary-btn svg,
.plain-btn svg {
  width: 18px;
  height: 18px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: min(1180px, calc(100% - 36px));
  margin: -46px auto 0;
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.28);
  box-shadow: 0 20px 42px rgba(12, 15, 22, 0.14);
}

.hero-stat {
  min-height: 112px;
  padding: 24px 26px;
  background: #fff;
}

.hero-stat strong {
  display: block;
  color: var(--red);
  font-size: 28px;
  line-height: 1;
}

.hero-stat span {
  display: block;
  margin-top: 12px;
  color: #343b48;
  line-height: 1.6;
}

.sub-main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 76px 0 86px;
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 38px;
  align-items: start;
  margin-bottom: 58px;
}

.intro-copy {
  padding-left: 28px;
  border-left: 4px solid var(--red);
}

.intro-copy h2,
.section-block h2 {
  margin: 0 0 18px;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

.intro-copy p,
.section-lead,
.text-stack p {
  margin: 0;
  color: #394150;
  font-size: 16px;
  line-height: 2;
}

.intro-copy p + p,
.text-stack p + p {
  margin-top: 14px;
}

.intro-aside {
  padding: 28px;
  color: #fff;
  background: var(--charcoal);
  border-top: 4px solid var(--red);
}

.intro-aside strong {
  display: block;
  font-size: 22px;
  line-height: 1.4;
}

.intro-aside p {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.9;
}

.section-block {
  margin-top: 64px;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 28px;
}

.section-head h2 {
  max-width: 620px;
}

.section-lead {
  max-width: 560px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.article-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(214, 1, 7, 0.35);
  box-shadow: 0 18px 34px rgba(15, 18, 25, 0.12);
}

.article-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.article-card div {
  padding: 22px;
}

.article-card time,
.article-detail-head time {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--red);
  font-size: 13px;
  font-weight: 800;
}

.article-card h3 {
  min-height: 62px;
  margin: 0 0 12px;
  font-size: 21px;
  line-height: 1.45;
}

.article-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.article-detail {
  scroll-margin-top: 92px;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--line);
  background: #fff;
}

.article-detail + .article-detail {
  margin-top: 24px;
}

.article-detail-head {
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.article-detail-head h2 {
  max-width: 880px;
  margin-bottom: 0;
}

.article-body {
  max-width: 920px;
}

.article-body p {
  margin: 0;
  color: #394150;
  font-size: 16px;
  line-height: 2;
}

.article-body p + p {
  margin-top: 14px;
}

.info-card {
  min-height: 210px;
  padding: 26px;
  border: 1px solid var(--line);
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.info-card:hover {
  transform: translateY(-4px);
  border-color: rgba(214, 1, 7, 0.35);
  box-shadow: 0 18px 34px rgba(15, 18, 25, 0.12);
}

.info-card span {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: #fff;
  background: var(--red);
  border-radius: 4px;
}

.info-card svg {
  width: 23px;
  height: 23px;
}

.info-card h3 {
  margin: 0 0 12px;
  font-size: 21px;
}

.info-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.media-row {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 34px;
  align-items: stretch;
}

.media-row.reverse {
  grid-template-columns: 0.92fr 1.08fr;
}

.media-frame {
  min-height: 420px;
  overflow: hidden;
  background: #111;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.text-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 38px;
  background: var(--paper);
  border-left: 4px solid var(--red);
}

.text-panel h2 {
  margin: 0 0 18px;
  font-size: clamp(26px, 3vw, 38px);
}

.text-panel ul,
.clean-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.text-panel li,
.clean-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  color: #364050;
  line-height: 1.7;
  border-bottom: 1px solid rgba(16, 19, 24, 0.09);
}

.text-panel li::before,
.clean-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  margin-top: 10px;
  background: var(--red);
}

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

.step {
  position: relative;
  min-height: 186px;
  padding: 28px 24px;
  color: #fff;
  background: var(--charcoal);
}

.step em {
  display: block;
  margin-bottom: 22px;
  color: #ff5c60;
  font-style: normal;
  font-weight: 800;
}

.step h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.step p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.8;
}

.audience-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.audience-card {
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 20px;
  align-items: start;
  padding: 24px;
  border: 1px solid var(--line);
  background: #fff;
}

.audience-card span {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  color: var(--red);
  border: 1px solid rgba(214, 1, 7, 0.35);
  border-radius: 50%;
}

.audience-card svg {
  width: 26px;
  height: 26px;
}

.audience-card h3 {
  margin: 0 0 10px;
  font-size: 21px;
}

.audience-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
}

.quote-band {
  margin-top: 64px;
  padding: clamp(34px, 5vw, 58px);
  color: #fff;
  background: var(--red);
}

.quote-band p {
  max-width: 900px;
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.55;
}

.quote-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.quote-actions .plain-btn {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.62);
}

.quote-actions .plain-btn:hover {
  background: rgba(255, 255, 255, 0.14);
}

.sub-footer {
  color: rgba(255, 255, 255, 0.74);
  background: #090c12;
}

.footer-inner {
  width: min(1180px, calc(100% - 36px));
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  margin: 0 auto;
  padding: 34px 0;
}

.footer-inner strong {
  display: block;
  color: #fff;
  margin-bottom: 8px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links a:hover {
  color: #fff;
}

@media (max-width: 1120px) {
  .sub-header {
    gap: 16px;
  }

  .sub-brand {
    min-width: 0;
  }

  .sub-brand small,
  .sub-phone {
    display: none;
  }

  .sub-nav {
    gap: 14px;
  }

  .hero-stats,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro-band,
  .media-row,
  .media-row.reverse {
    grid-template-columns: 1fr;
  }

  .media-row.reverse .media-frame {
    order: -1;
  }

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

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

@media (max-width: 820px) {
  .sub-header {
    height: 68px;
  }

  .sub-brand img {
    width: 58px;
    height: 40px;
  }

  .sub-brand strong {
    font-size: 18px;
  }

  .sub-menu {
    display: inline-flex;
    margin-left: auto;
  }

  .sub-nav {
    position: fixed;
    inset: 68px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 18px 22px;
    background: rgba(7, 10, 15, 0.98);
  }

  body.menu-open .sub-nav {
    display: flex;
  }

  .sub-nav a {
    padding: 14px 0;
  }

  .sub-nav a::after {
    bottom: 8px;
  }

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

  .hero-inner {
    padding: 72px 0 56px;
  }

  .hero-stats,
  .card-grid,
  .article-grid,
  .steps,
  .audience-map {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: block;
  }

  .section-lead {
    margin-top: 12px;
  }

  .intro-copy {
    padding-left: 20px;
  }

  .text-panel {
    padding: 28px;
  }

  .media-frame {
    min-height: 280px;
  }

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