:root {
  color-scheme: light;
  --ink: #17232f;
  --muted: #5d6a73;
  --line: #ded7cc;
  --paper: #fbfaf7;
  --soft: #f0ebe3;
  --deep: #1f4e5f;
  --teal: #14776f;
  --coral: #c9563b;
  --amber: #bd8426;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(23, 35, 47, 0.13);
  --container: min(1120px, calc(100% - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  line-height: 1.72;
}

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

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

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 20;
  transform: translateY(-120%);
  background: var(--ink);
  color: var(--white);
  padding: 8px 12px;
  border-radius: 6px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(23, 35, 47, 0.88);
  backdrop-filter: blur(14px);
}

.nav {
  width: var(--container);
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--coral);
  color: var(--white);
  font-size: 13px;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 30px);
  color: rgba(255, 255, 255, 0.86);
  font-size: 14px;
}

.nav-links a {
  padding: 22px 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--white);
  border-color: var(--amber);
}

.hero {
  min-height: min(660px, calc(100svh - 150px));
  display: grid;
  align-items: center;
  position: relative;
  overflow: hidden;
  background-image:
    linear-gradient(90deg, rgba(18, 30, 42, 0.88), rgba(18, 30, 42, 0.64) 48%, rgba(18, 30, 42, 0.12)),
    url("assets/baoding-business-service.png");
  background-position: center;
  background-size: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background: linear-gradient(0deg, rgba(23, 35, 47, 0.72), rgba(23, 35, 47, 0));
  pointer-events: none;
}

.hero-content {
  width: var(--container);
  margin: 0 auto;
  padding: clamp(44px, 5vw, 66px) 0;
  position: relative;
  z-index: 1;
  color: var(--white);
  max-width: 760px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #f0b16b;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 20px;
  line-height: 1.35;
}

.hero-lead {
  max-width: 720px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 0 0 28px;
}

.hero-facts div {
  min-width: 0;
  padding: 14px 16px;
  border-left: 3px solid var(--amber);
  background: rgba(255, 255, 255, 0.08);
}

.hero-facts dt {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.hero-facts dd {
  margin: 2px 0 0;
  color: var(--white);
  font-weight: 800;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 20px;
  border-radius: 6px;
  font-weight: 800;
}

.button-primary {
  background: var(--coral);
  color: var(--white);
}

.button-secondary {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: var(--white);
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
}

.section {
  padding: clamp(64px, 9vw, 108px) 0;
}

.section-muted {
  background: var(--soft);
}

.section-intro {
  background: var(--paper);
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.narrow {
  max-width: 880px;
}

.two-column,
.split,
.contact-layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: start;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading p {
  color: var(--muted);
  font-size: 17px;
}

.compact {
  margin-bottom: 24px;
}

.prose {
  color: #394753;
  font-size: 17px;
}

.prose p {
  margin-bottom: 18px;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}

.fact-grid div {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
}

.fact-grid dt {
  margin-bottom: 8px;
  color: var(--deep);
  font-size: 14px;
  font-weight: 800;
}

.fact-grid dd {
  margin: 0;
  color: #364551;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  position: relative;
  min-height: 320px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(23, 35, 47, 0.06);
}

.service-card:nth-child(2) {
  border-top-color: rgba(20, 119, 111, 0.65);
}

.service-card:nth-child(3) {
  border-top-color: rgba(189, 132, 38, 0.68);
}

.service-card:nth-child(4) {
  border-top-color: rgba(31, 78, 95, 0.55);
}

.card-index {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--coral);
  font-size: 14px;
  font-weight: 900;
}

.service-card ul {
  padding-left: 18px;
  margin: 0;
  color: #41505c;
}

.service-card li + li {
  margin-top: 8px;
}

.section-accent {
  color: var(--white);
  background: var(--deep);
}

.section-accent .section-kicker {
  color: #f0b16b;
}

.section-accent p {
  color: rgba(255, 255, 255, 0.82);
}

.advantage-list {
  display: grid;
  gap: 12px;
}

.advantage-list article {
  padding: 22px 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.advantage-list h3 {
  margin-bottom: 6px;
  color: var(--white);
  font-size: 18px;
}

.advantage-list p {
  margin: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-list span {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid rgba(31, 78, 95, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  color: #33434f;
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(23, 35, 47, 0.05);
}

summary {
  cursor: pointer;
  padding: 20px 22px;
  color: var(--ink);
  font-weight: 900;
}

details p {
  margin: 0;
  padding: 0 22px 22px;
  color: #465562;
}

.contact-band {
  background: #ece3d6;
}

.contact-layout {
  align-items: center;
}

address {
  display: grid;
  gap: 10px;
  padding: 26px;
  border-left: 4px solid var(--coral);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  color: #34434e;
  font-style: normal;
}

address strong {
  color: var(--ink);
  font-size: 18px;
}

.footer {
  padding: 26px 0;
  background: #14222d;
  color: rgba(255, 255, 255, 0.76);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-copy {
  display: grid;
  gap: 4px;
}

.footer p {
  margin: 0;
}

.footer-record {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

@media (max-width: 920px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-links a {
    padding: 4px 0 10px;
    white-space: nowrap;
  }

  .hero {
    min-height: calc(100svh - 180px);
    background-position: 58% center;
  }

  .hero-facts,
  .fact-grid,
  .service-grid,
  .two-column,
  .split,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .service-card {
    min-height: auto;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  :root {
    --container: min(100% - 28px, 1120px);
  }

  .brand {
    font-size: 15px;
  }

  .hero {
    min-height: calc(100svh - 190px);
    background-position: 64% center;
  }

  .hero-content {
    padding: 42px 0 34px;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 28px;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-facts div,
  .service-card,
  .fact-grid div,
  .advantage-list article,
  address {
    padding: 18px;
  }

  .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .hero-facts div {
    padding: 10px 8px;
  }

  .hero-facts dt {
    font-size: 12px;
  }

  .hero-facts dd {
    font-size: 13px;
  }

  .hero-actions .button {
    flex: 1 1 calc(50% - 6px);
    width: auto;
  }
}