:root {
  --ink: #122033;
  --muted: #607083;
  --line: #dce4ec;
  --paper: #f5f8fb;
  --white: #ffffff;
  --blue: #0b5f9f;
  --blue-deep: #071d3a;
  --cyan: #40a9ff;
  --gold: #c99139;
  --shadow: 0 24px 70px rgba(7, 29, 58, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  background: var(--white);
  line-height: 1.65;
}

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

button {
  font: inherit;
}

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

.keyword-strip {
  padding: 9px clamp(18px, 4vw, 64px);
  color: var(--white);
  background: var(--blue-deep);
  font-size: 14px;
  font-weight: 900;
  text-align: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  min-height: 78px;
  padding: 12px clamp(18px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(220, 228, 236, 0.95);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 360px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 82px;
  height: 68px;
  overflow: hidden;
  background: var(--blue-deep);
  border-radius: 8px;
}

.brand-mark img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}

.brand-text {
  display: grid;
  line-height: 1.25;
}

.brand-text strong {
  color: var(--blue-deep);
  font-size: 17px;
}

.brand-text small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #2d4054;
  font-size: 15px;
  font-weight: 700;
}

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

.header-cta,
.primary-action,
.secondary-action,
.contact-panel button,
.wechat-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 4px;
  font-weight: 800;
  cursor: pointer;
}

.header-cta,
.primary-action,
.contact-panel button {
  color: var(--white);
  background: var(--blue);
  border: 1px solid var(--blue);
}

.header-cta {
  flex: 0 0 auto;
  padding: 0 18px;
}

button.header-cta {
  font: inherit;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: clamp(30px, 5vw, 76px);
  align-items: center;
  min-height: 690px;
  padding: clamp(50px, 7vw, 96px) clamp(18px, 4vw, 64px);
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(7, 29, 58, 0.98), rgba(7, 29, 58, 0.9) 52%, rgba(7, 29, 58, 0.76)),
    var(--blue-deep);
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 900;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(38px, 5.4vw, 66px);
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(27px, 3.5vw, 43px);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.25;
}

.hero-text {
  max-width: 690px;
  color: #dce8f2;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 30px 0 22px;
}

.primary-action,
.secondary-action {
  padding: 0 22px;
}

.secondary-action,
.wechat-link {
  color: var(--blue);
  background: transparent;
  border: 1px solid #b8c9d8;
}

.hero .secondary-action {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.44);
}

.hero-note {
  display: grid;
  gap: 6px;
  color: #bdd4e6;
  font-size: 14px;
}

.hero-photo {
  margin: 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.26);
}

.hero-photo img {
  width: 100%;
  aspect-ratio: 1.23 / 1;
  object-fit: cover;
}

.hero-photo figcaption {
  padding: 14px 18px;
  color: #dce8f2;
  font-weight: 800;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.trust-strip div {
  min-height: 130px;
  padding: 26px clamp(18px, 4vw, 36px);
  border-right: 1px solid var(--line);
}

.trust-strip div:last-child {
  border-right: 0;
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip strong {
  margin-bottom: 8px;
  color: var(--blue-deep);
  font-size: 23px;
}

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

.section,
.faq-section,
.contact-section {
  padding: clamp(64px, 8vw, 108px) clamp(18px, 4vw, 64px);
}

.section-heading {
  max-width: 880px;
  margin-bottom: 34px;
}

.section-heading p:last-child,
.split-heading > p {
  color: var(--muted);
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.72fr);
  gap: 34px;
  align-items: end;
  max-width: none;
}

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

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

.service-card,
.advantage-grid article {
  min-height: 230px;
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 38px rgba(7, 29, 58, 0.07);
}

.service-card span {
  display: inline-block;
  margin-bottom: 36px;
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.service-card p,
.advantage-grid p,
.faq-list p,
.contact-section p {
  color: var(--muted);
}

.route-band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 34px;
  align-items: center;
  padding: clamp(58px, 7vw, 94px) clamp(18px, 4vw, 64px);
  color: var(--white);
  background: linear-gradient(120deg, #08233f, #0c6597);
}

.route-band p {
  color: #d9edf8;
}

.route-map {
  display: grid;
  grid-template-columns: minmax(90px, 1fr) 80px minmax(90px, 1fr) 80px minmax(90px, 1fr);
  align-items: center;
  gap: 12px;
}

.route-map span {
  display: grid;
  place-items: center;
  min-height: 96px;
  padding: 16px;
  color: var(--blue-deep);
  background: var(--white);
  border-radius: 5px;
  font-weight: 900;
  text-align: center;
}

.route-map i {
  height: 3px;
  background: linear-gradient(90deg, var(--white), var(--gold));
  position: relative;
}

.route-map i::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -5px;
  width: 0;
  height: 0;
  border-left: 12px solid var(--gold);
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}

.advantages-section {
  background: var(--white);
}

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

.advantage-grid article {
  min-height: 205px;
  border-top: 4px solid var(--blue);
}

.process-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-list li {
  min-height: 176px;
  padding: 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process-list span {
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 900;
}

.process-list b,
.process-list small {
  display: block;
}

.process-list small {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.photo-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
}

.photo-grid figure {
  margin: 0;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.photo-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.photo-grid figcaption {
  padding: 14px 16px;
  color: var(--blue-deep);
  font-weight: 800;
}

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

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 980px;
}

.faq-list details {
  padding: 20px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.faq-list summary {
  cursor: pointer;
  font-size: 18px;
  font-weight: 800;
}

.faq-list p {
  margin: 12px 0 0;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 430px);
  gap: 34px;
  align-items: center;
  color: var(--white);
  background: linear-gradient(135deg, #071d3a, #0b5f9f);
}

.contact-section .eyebrow,
.contact-section p {
  color: #d9edf8;
}

.contact-info-list {
  display: grid;
  gap: 10px;
  max-width: 820px;
}

.contact-info-list div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.contact-info-list span {
  color: #9fd7ff;
  font-weight: 900;
}

.contact-info-list strong {
  color: var(--white);
  font-weight: 700;
  line-height: 1.55;
}

.contact-panel {
  display: grid;
  gap: 14px;
  padding: 28px;
  color: var(--ink);
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-label,
.contact-panel small {
  color: var(--muted);
}

.contact-panel strong {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
}

.wechat-qr {
  width: min(100%, 260px);
  justify-self: center;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-panel button,
.wechat-link {
  width: 100%;
}

.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  place-items: center;
  padding: 22px;
}

.wechat-modal.is-open {
  display: grid;
}

.wechat-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7, 29, 58, 0.68);
}

.wechat-modal-card {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  padding: 28px;
  color: var(--ink);
  background: var(--white);
  border-radius: 10px;
  box-shadow: var(--shadow);
  text-align: center;
}

.wechat-modal-card h2 {
  font-size: 28px;
}

.wechat-modal-card img {
  width: min(100%, 300px);
  margin: 12px auto 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.wechat-modal-card p:last-of-type {
  color: var(--muted);
}

.wechat-modal-card button[data-copy-contact] {
  width: 100%;
  min-height: 46px;
  color: var(--white);
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 4px;
  font-weight: 800;
  cursor: pointer;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 38px;
  height: 38px;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(18px, 4vw, 64px);
  color: #dbe9ee;
  background: #071d3a;
}

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

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

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 50;
  padding: 12px 16px;
  color: var(--white);
  background: var(--blue-deep);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

@media (max-width: 1080px) {
  .hero,
  .route-band,
  .contact-section,
  .split-heading {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .advantage-grid,
  .trust-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .brand {
    min-width: 0;
  }

  .main-nav {
    width: 100%;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .main-nav a {
    flex: 0 0 auto;
  }

  .header-cta {
    width: 100%;
  }

  .hero {
    min-height: auto;
  }

  .hero-actions,
  .photo-grid,
  .service-grid,
  .advantage-grid,
  .trust-strip,
  .process-list,
  .route-map {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    display: grid;
  }

  .route-map i {
    width: 3px;
    height: 34px;
    justify-self: center;
    background: linear-gradient(180deg, var(--white), var(--gold));
  }

  .route-map i::after {
    right: -5px;
    top: auto;
    bottom: -1px;
    border-top: 12px solid var(--gold);
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-bottom: 0;
  }

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

  .contact-info-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}