:root {
  --ink: #101624;
  --muted: #607086;
  --line: #dfe5ee;
  --blue: #2468e8;
  --blue-dark: #123a8a;
  --orange: #ff9408;
  --surface: #f5f7fb;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(20, 34, 61, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
  padding: 0 clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(223, 229, 238, 0.78);
  backdrop-filter: blur(14px);
}

.brand img {
  width: 216px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.8vw, 34px);
  font-size: 15px;
  color: #2f3d52;
}

.nav a {
  padding: 25px 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--blue);
  border-color: var(--orange);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.wechat-link,
.system-link,
.primary-button,
.secondary-button,
.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.wechat-link {
  padding: 0 16px;
  color: var(--white);
  background: var(--ink);
  font-weight: 700;
}

.system-link {
  padding: 0 14px;
  color: var(--blue-dark);
  border-color: var(--line);
  background: var(--white);
  font-weight: 800;
}

.icon-button {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
}

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
  padding: 164px clamp(20px, 6vw, 84px) 44px;
  overflow: hidden;
  color: var(--white);
  background: #121a2a;
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(12, 21, 39, 0.9) 0%, rgba(12, 21, 39, 0.7) 44%, rgba(12, 21, 39, 0.25) 100%),
    url("https://images.unsplash.com/photo-1494412519320-aa613dfb7738?auto=format&fit=crop&w=1800&q=82") center / cover;
  transform: scale(1.02);
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.hero-content {
  max-width: 780px;
  padding-bottom: 72px;
  min-width: 0;
}

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

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero-copy {
  max-width: 680px;
  margin-bottom: 32px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 19px;
}

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

.primary-button,
.secondary-button,
.copy-button {
  padding: 0 22px;
  font-weight: 800;
}

.primary-button {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 14px 32px rgba(36, 104, 232, 0.28);
}

.primary-button:hover {
  background: #1d57c5;
}

.primary-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.secondary-button {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.36);
  background: rgba(255, 255, 255, 0.08);
}

.hero-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 980px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(16px);
}

.hero-panel div {
  padding: 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.16);
}

.hero-panel div:last-child {
  border-right: 0;
}

.hero-panel span,
.footer span {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.hero-panel strong {
  display: block;
  margin-top: 6px;
  font-size: 19px;
}

.section {
  padding: 92px clamp(20px, 6vw, 84px);
}

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

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.3;
}

.section p {
  color: var(--muted);
}

.intro {
  background: var(--surface);
}

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

.service-card {
  min-height: 260px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 8px 24px rgba(20, 34, 61, 0.05);
}

.service-card i,
.route-item span,
.step strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 24px;
  border-radius: 6px;
  color: var(--white);
  background: var(--blue);
}

.routes {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: center;
}

.routes-copy {
  max-width: 560px;
}

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

.route-item {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  padding: 24px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(36, 104, 232, 0.06), rgba(255, 148, 8, 0.04));
}

.route-item span {
  margin: 0;
  background: var(--orange);
  font-weight: 800;
}

.process {
  background: #101624;
  color: var(--white);
}

.seo-summary {
  background: var(--white);
}

.seo-summary .section-heading {
  max-width: 920px;
}

.process .section-heading p,
.process .step p {
  color: rgba(255, 255, 255, 0.68);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.step {
  min-height: 250px;
  padding: 28px;
  background: #151d2f;
}

.step strong {
  background: rgba(255, 148, 8, 0.18);
  color: var(--orange);
}

.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 22px;
  background: var(--surface);
}

.about-card {
  padding: 44px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.stats {
  display: grid;
  gap: 14px;
}

.stats div {
  padding: 28px;
  border-left: 4px solid var(--orange);
  background: var(--white);
}

.stats strong {
  display: block;
  margin-bottom: 8px;
  font-size: 24px;
}

.stats span {
  color: var(--muted);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
}

.contact-copy {
  position: sticky;
  top: 110px;
}

.copy-button {
  color: var(--ink);
  border-color: var(--line);
  background: var(--white);
}

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

.quote-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.quote-form label {
  display: grid;
  gap: 8px;
}

.quote-form span {
  font-size: 14px;
  font-weight: 800;
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #cfd8e5;
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  outline: none;
}

.quote-form textarea {
  resize: vertical;
}

.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(36, 104, 232, 0.12);
}

.wide {
  grid-column: 1 / -1;
}

.form-result {
  grid-column: 1 / -1;
  min-height: 24px;
  margin: 0;
  color: var(--blue-dark);
  font-weight: 700;
  white-space: pre-line;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 6vw, 84px);
  background: #090d16;
  color: var(--white);
}

.footer img {
  width: 180px;
  filter: brightness(1.1);
}

.footer a {
  color: var(--orange);
  font-weight: 800;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.footer span {
  margin-top: 4px;
}

svg {
  width: 19px;
  height: 19px;
  stroke-width: 2.2;
}

@media (max-width: 1080px) {
  .service-grid,
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .contact-copy {
    position: static;
  }
}

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

  .brand img {
    width: 166px;
  }

  .icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .wechat-link span,
  .system-link span {
    display: none;
  }

  .nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    display: none;
    padding: 10px 20px 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 14px 0;
  }

  .hero {
    min-height: 700px;
    padding-top: 118px;
  }

  .hero-content {
    padding-bottom: 32px;
  }

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .hero-panel div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  }

  .hero-panel div:last-child {
    border-bottom: 0;
  }

  .quote-form {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 760px;
  }

  h1 {
    width: 100%;
    max-width: 300px;
    font-size: 30px;
    line-height: 1.12;
    word-break: break-all;
    line-break: anywhere;
  }

  .hero-copy {
    max-width: 300px;
    font-size: 17px;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .hero-actions,
  .primary-button,
  .secondary-button,
  .copy-button {
    width: 100%;
  }

  .service-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .section {
    padding-top: 70px;
    padding-bottom: 70px;
  }

  .about-card,
  .quote-form {
    padding: 22px;
  }
}