:root {
  --ink: #142b3d;
  --ink-soft: #526575;
  --cream: #f6f3ed;
  --paper: #ffffff;
  --accent: #d87822;
  --accent-dark: #ad5314;
  --line: #dce3e7;
  --night: #0f2636;
  --night-soft: #183b50;
  --shadow: 0 24px 60px rgba(15, 38, 54, 0.12);
  --radius: 22px;
}

* {
  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 CJK SC", Arial, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(216, 120, 34, 0.45);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(20, 43, 61, 0.09);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 14px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 19px;
  line-height: 1.25;
  letter-spacing: 0.05em;
}

.brand small {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  color: #385064;
  font-size: 14px;
}

.site-nav a,
.back-home {
  transition: color 0.2s ease;
}

.site-nav a:hover,
.back-home:hover {
  color: var(--accent-dark);
}

.header-phone {
  padding: 9px 15px;
  color: var(--accent-dark);
  border: 1px solid rgba(216, 120, 34, 0.35);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 94px 0 88px;
  background:
    radial-gradient(circle at 88% 12%, rgba(216, 120, 34, 0.15), transparent 31%),
    linear-gradient(145deg, #fbfaf7 0%, #f2eee6 100%);
}

.hero::before {
  content: "";
  position: absolute;
  left: -130px;
  bottom: -210px;
  width: 430px;
  height: 430px;
  border: 1px solid rgba(20, 43, 61, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 55px rgba(20, 43, 61, 0.025), 0 0 0 110px rgba(20, 43, 61, 0.02);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  gap: 74px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(42px, 5.2vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.hero-lead {
  max-width: 680px;
  margin: 28px 0 0;
  color: #506370;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 14px 28px rgba(173, 83, 20, 0.22);
}

.button-primary:hover {
  background: var(--accent-dark);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(20, 43, 61, 0.18);
}

.hero-note {
  margin: 22px 0 0;
  color: #6f7e88;
  font-size: 13px;
}

.hero-panel {
  padding: 28px;
  color: #fff;
  background: var(--night);
  border-radius: 28px;
  box-shadow: var(--shadow);
  transform: rotate(1.4deg);
}

.panel-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  color: #c3d0d7;
  font-size: 13px;
}

.status-dot::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  background: #e7a15f;
  border-radius: 50%;
}

.road-card {
  position: relative;
  overflow: hidden;
  padding: 30px;
  background: var(--night-soft);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 19px;
}

.road-card::after {
  content: "";
  position: absolute;
  right: -55px;
  bottom: -65px;
  width: 170px;
  height: 170px;
  border: 24px solid rgba(216, 120, 34, 0.17);
  border-radius: 50%;
}

.road-label {
  color: #efb47d;
  font-size: 12px;
  letter-spacing: 0.18em;
}

.road-card strong {
  display: block;
  margin-top: 10px;
  font-size: 26px;
  letter-spacing: 0.04em;
}

.road-card p {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  color: #b8c8d2;
  font-size: 14px;
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 12px 4px;
  color: #dce6eb;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-list span {
  color: #efb47d;
  font-size: 11px;
  font-weight: 800;
}

.section {
  padding: 96px 0;
}

.section-heading {
  max-width: 690px;
  margin-bottom: 42px;
}

.section h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.section-heading > p:last-child {
  margin: 18px 0 0;
  color: var(--ink-soft);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.service-card {
  min-height: 275px;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(20, 43, 61, 0.055);
}

.card-number {
  display: block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.service-card h3 {
  margin: 58px 0 14px;
  font-size: 22px;
}

.service-card p {
  margin: 0;
  color: var(--ink-soft);
}

.section-contrast {
  color: #fff;
  background: var(--night);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  align-items: start;
}

.eyebrow-light {
  color: #efb47d;
}

.about-copy {
  color: #c6d2d9;
  font-size: 17px;
}

.about-copy p {
  margin: 0 0 18px;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  padding: 24px;
  background: var(--cream);
  border-radius: 18px;
}

.process-list > li > span {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--ink);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 800;
}

.process-list h3 {
  margin: 22px 0 8px;
  font-size: 19px;
}

.process-list p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.contact-section {
  padding: 0 0 96px;
}

.contact-card {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 70px;
  align-items: center;
  padding: 56px;
  background: var(--cream);
  border-radius: 28px;
}

.contact-card > div:first-child > p:last-child {
  margin: 18px 0 0;
  color: var(--ink-soft);
}

.contact-details {
  display: grid;
  gap: 12px;
}

.contact-line {
  display: grid;
  gap: 5px;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.contact-line span {
  color: var(--ink-soft);
  font-size: 12px;
}

.contact-line strong {
  line-height: 1.55;
}

.site-footer {
  padding: 36px 0;
  color: #c6d1d8;
  background: #091c29;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.site-footer strong {
  color: #fff;
  font-size: 18px;
}

.site-footer p {
  margin: 3px 0 0;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 20px;
  font-size: 13px;
}

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

.legal-main {
  padding: 64px 0 90px;
  background: var(--cream);
}

.legal-document {
  max-width: 900px;
  padding: 58px 64px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 18px 55px rgba(20, 43, 61, 0.08);
}

.legal-header {
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.legal-header h1 {
  margin: 0;
  font-size: clamp(36px, 5vw, 54px);
  line-height: 1.2;
}

.legal-header > p:last-child {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.legal-document section {
  padding-top: 30px;
}

.legal-document h2 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: 0;
}

.legal-document section p {
  margin: 8px 0;
  color: #465c6c;
}

.legal-document section a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--cream);
}

.error-card {
  max-width: 560px;
  padding: 50px;
  text-align: center;
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.error-card h1 {
  margin: 0;
  font-size: 38px;
}

.error-card p:not(.eyebrow) {
  margin: 16px 0 26px;
  color: var(--ink-soft);
}

@media (max-width: 960px) {
  .site-nav {
    display: none;
  }

  .hero-grid,
  .about-grid,
  .contact-card {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 50px;
  }

  .hero-panel {
    max-width: 620px;
    transform: none;
  }

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

  .service-card {
    min-height: 0;
  }

  .service-card h3 {
    margin-top: 32px;
  }

  .about-grid {
    gap: 32px;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .header-inner {
    min-height: 70px;
    gap: 12px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
  }

  .brand strong {
    font-size: 16px;
  }

  .brand small {
    display: none;
  }

  .header-phone {
    padding: 8px 11px;
    font-size: 12px;
  }

  .hero {
    padding: 68px 0 64px;
  }

  .hero h1 {
    font-size: 42px;
  }

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

  .hero-panel {
    padding: 18px;
    border-radius: 22px;
  }

  .road-card {
    padding: 22px;
  }

  .road-card strong {
    font-size: 22px;
  }

  .section {
    padding: 72px 0;
  }

  .section-heading {
    margin-bottom: 30px;
  }

  .process-list {
    grid-template-columns: 1fr;
  }

  .contact-section {
    padding-bottom: 72px;
  }

  .contact-card {
    gap: 36px;
    padding: 34px 24px;
    border-radius: 22px;
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
    gap: 12px 18px;
  }

  .legal-main {
    padding: 30px 0 60px;
  }

  .legal-document {
    padding: 36px 24px;
    border-radius: 18px;
  }

  .error-card {
    padding: 38px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}