:root {
  --blue: #075fc7;
  --blue-2: #003c91;
  --blue-3: #eaf4ff;
  --orange: #ff8419;
  --ink: #061b46;
  --muted: #526174;
  --line: #dfe9f5;
  --paper: #f7fbff;
  --white: #ffffff;
  --shadow: 0 18px 48px rgba(11, 63, 132, .12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto auto auto;
  align-items: center;
  gap: 24px;
  min-height: 72px;
  padding: 0 clamp(18px, 5vw, 72px);
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 10px 30px rgba(5, 50, 112, .08);
  backdrop-filter: blur(14px);
}

.site-header a {
  -webkit-tap-highlight-color: transparent;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  overflow: hidden;
  border-radius: 14px;
  background:
    radial-gradient(circle at 72% 22%, rgba(255, 255, 255, .26) 0 10px, transparent 11px),
    linear-gradient(135deg, var(--blue-2), #0876df);
  box-shadow: 0 14px 28px rgba(7, 95, 199, .18);
}

.brand-mark::before {
  content: "";
  position: absolute;
  left: 9px;
  right: 9px;
  top: 22px;
  height: 5px;
  border-radius: 999px;
  background: #fff;
  transform: rotate(-18deg);
  transform-origin: center;
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 12px;
  width: 11px;
  height: 21px;
  border-radius: 999px 999px 3px 3px;
  background: #fff;
  clip-path: polygon(48% 0, 100% 100%, 55% 82%, 0 100%);
  transform: rotate(62deg);
  transform-origin: center;
}

.brand strong,
.brand small {
  display: block;
  letter-spacing: 0;
}

.brand strong {
  color: var(--blue-2);
  font-size: 22px;
  line-height: 1.16;
  font-weight: 900;
}

.brand small {
  margin-top: 2px;
  color: #344a68;
  font-size: 13px;
}

.nav-links {
  display: flex;
  gap: 30px;
  color: #1c2d47;
  font-size: 15px;
  font-weight: 700;
}

.nav-links a {
  position: relative;
  padding: 25px 0;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 12px;
  width: 0;
  height: 4px;
  border-radius: 999px;
  background: var(--blue);
  transform: translateX(-50%);
  transition: width .2s ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  width: 34px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-size: 17px;
  font-weight: 900;
  white-space: nowrap;
}

.phone-link span {
  position: relative;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: #fff;
  font-size: 0;
  background:
    radial-gradient(circle at 70% 24%, rgba(255, 255, 255, .24) 0 5px, transparent 6px),
    linear-gradient(135deg, var(--blue), #004aa5);
  border-radius: 50%;
  box-shadow: 0 10px 20px rgba(7, 95, 199, .18);
}

.phone-link span::before {
  content: "";
  width: 17px;
  height: 17px;
  background: center / contain no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M6.62 3.67c.46-.34 1.1-.29 1.51.12l2.18 2.18c.36.36.46.91.24 1.37L9.52 9.5a12.3 12.3 0 0 0 4.98 4.98l2.16-1.03c.46-.22 1.01-.12 1.37.24l2.18 2.18c.41.41.46 1.05.12 1.51-.78 1.06-1.8 1.9-2.98 2.45-.62.29-1.33.35-2 .16A15.17 15.17 0 0 1 4.01 8.65a3.2 3.2 0 0 1 .16-2c.55-1.18 1.39-2.2 2.45-2.98Z'/%3E%3C/svg%3E");
}

.top-cta,
.primary-btn,
.wechat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 900;
  white-space: nowrap;
}

.top-cta,
.primary-btn {
  color: #fff;
  background: var(--orange);
  box-shadow: 0 14px 28px rgba(255, 132, 25, .22);
}

.wechat-btn {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(7, 95, 199, .2);
}

.hero {
  position: relative;
  overflow: hidden;
  background: #eef7ff;
}

.hero-media {
  display: block;
}

.hero-media img {
  width: 100%;
  height: auto;
}

.hero::before {
  display: none;
}

.hero-copy {
  width: min(650px, 100%);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero-hotspots {
  position: absolute;
  inset: 0;
  z-index: 2;
}

.hero-hotspot {
  position: absolute;
  top: 62.8%;
  height: 8.4%;
  border-radius: 8px;
}

.hero-hotspot:focus-visible {
  outline-offset: 4px;
}

.hero-hotspot-phone {
  left: 5.4%;
  width: 15.1%;
}

.hero-hotspot-wechat {
  left: 22.8%;
  width: 15.8%;
}

.hero h1 {
  margin: 0;
  color: var(--blue-2);
  font-size: clamp(38px, 5.6vw, 66px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0;
}

.hero p {
  max-width: 560px;
  margin: 24px 0 0;
  color: #162942;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 42px;
}

.hero-actions a {
  min-width: 152px;
  min-height: 56px;
  font-size: 18px;
}

.trust-strip {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  width: min(1120px, calc(100% - 40px));
  margin: 24px auto 0;
  overflow: hidden;
  background: rgba(255,255,255,.96);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.trust-strip div {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 72px;
  padding: 12px;
  border-right: 1px solid var(--line);
  font-size: 16px;
}

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

.trust-strip span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border-radius: 50%;
  font-weight: 900;
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 56px 0 0;
  scroll-margin-top: 88px;
}

.section.compact {
  padding-top: 42px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-bottom: 30px;
  text-align: center;
}

.section-title span {
  width: 64px;
  height: 1px;
  background: linear-gradient(90deg, transparent, #8bb7ef);
}

.section-title span:last-child {
  background: linear-gradient(90deg, #8bb7ef, transparent);
}

.section-title h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 900;
  letter-spacing: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 22px;
}

.image-card,
.benefit-grid article,
.process-grid li,
.faq details,
.contact-card,
.qr-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.image-card {
  overflow: hidden;
  text-align: center;
}

.image-card picture {
  display: block;
}

.image-card img {
  width: 100%;
  aspect-ratio: 1.3 / 1;
  object-fit: cover;
}

.image-card h3 {
  margin: 14px 10px 2px;
  color: var(--blue-2);
  font-size: 20px;
  font-weight: 900;
}

.image-card p {
  min-height: 42px;
  margin: 4px 10px 16px;
  color: #1b2f4a;
  font-size: 14px;
  font-weight: 700;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.benefit-grid article {
  min-height: 160px;
  padding: 26px 22px;
  text-align: center;
}

.line-icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  margin: 0 auto 12px;
  color: var(--blue);
  font-size: 32px;
  line-height: 1;
}

.benefit-grid h3,
.process-grid h3 {
  margin: 0;
  color: var(--ink);
  font-size: 19px;
  font-weight: 900;
}

.benefit-grid p,
.process-grid p {
  margin: 10px 0 0;
  color: #2f4057;
  font-size: 14px;
  line-height: 1.55;
}

.process-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin: 0;
  padding: 36px 0 0;
  list-style: none;
}

.process-grid::before {
  content: "";
  position: absolute;
  top: 20px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #8fb9ed 15%, #8fb9ed 85%, transparent);
}

.process-grid li {
  position: relative;
  min-height: 138px;
  padding: 34px 18px 22px;
  text-align: center;
}

.process-grid b {
  position: absolute;
  top: -33px;
  left: 50%;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  color: #fff;
  background: var(--blue);
  border: 6px solid #dcecff;
  border-radius: 50%;
  font-size: 19px;
  transform: translateX(-50%);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.customer-case-panel {
  display: grid;
  grid-template-columns: minmax(240px, .72fr) 1.6fr;
  gap: 22px;
  align-items: stretch;
}

.customer-case-lead,
.customer-case-list article {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.customer-case-lead {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
  padding: 28px 24px;
  background:
    linear-gradient(135deg, rgba(7, 95, 199, .95), rgba(0, 60, 145, .95)),
    var(--blue);
  color: #fff;
}

.customer-case-lead b {
  display: block;
  font-size: 26px;
  line-height: 1.2;
  font-weight: 900;
}

.customer-case-lead p {
  margin: 14px 0 24px;
  color: rgba(255, 255, 255, .9);
  font-size: 15px;
  line-height: 1.7;
}

.customer-case-lead .primary-btn {
  align-self: flex-start;
  min-height: 46px;
}

.customer-case-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.customer-case-list article {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  padding: 0;
  overflow: hidden;
}

.customer-case-list picture {
  display: block;
  background: #edf6ff;
}

.customer-case-list img {
  width: 100%;
  height: clamp(148px, 13vw, 176px);
  object-fit: cover;
}

.customer-case-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  padding: 18px 20px 18px;
}

.customer-case-list span {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--blue);
  background: var(--blue-3);
  border: 3px solid #fff;
  border-radius: 50%;
  font-weight: 900;
  box-shadow: 0 10px 22px rgba(7, 95, 199, .16);
  transform: translateY(-30px);
  margin-bottom: -18px;
}

.customer-case-list h3 {
  margin: 0 0 8px;
  color: var(--blue-2);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 900;
}

.customer-case-list p {
  margin: 0;
  color: #2f4057;
  font-size: 14px;
  line-height: 1.58;
}

.customer-case-list dl {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: auto 0 0;
}

.customer-case-list div {
  min-width: 0;
  padding: 10px 12px;
  background: #f4f9ff;
  border-radius: 7px;
}

.customer-case-list dt,
.customer-case-list dd {
  margin: 0;
}

.customer-case-list dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.customer-case-list dd {
  margin-top: 2px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.partner-grid img {
  width: 100%;
  min-height: 56px;
  object-fit: contain;
  padding: 12px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}

.faq details {
  padding: 0;
  overflow: hidden;
}

.faq summary {
  cursor: pointer;
  padding: 16px 18px;
  color: #1d2d43;
  font-size: 17px;
  font-weight: 900;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "⌄";
  float: right;
  color: #43536a;
}

.faq details[open] summary::after {
  content: "⌃";
}

.faq p {
  margin: 0;
  padding: 0 18px 18px;
  color: var(--muted);
}

.contact {
  margin-top: 56px;
  padding: 34px clamp(20px, 5vw, 72px) 0;
  background: linear-gradient(180deg, #f7fbff 0%, #eef7ff 48%, #004aa5 49%, #00337a 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr 1fr 1fr;
  gap: 22px;
  width: min(1120px, 100%);
  margin: 0 auto;
}

.contact-card,
.qr-card {
  min-height: 114px;
  margin: 0;
  padding: 20px 14px;
  text-align: center;
}

.contact-card span {
  display: block;
  color: var(--blue);
  font-size: 30px;
  line-height: 1;
}

.wechat-card .wechat-icon {
  display: block;
  width: 40px;
  height: 34px;
  margin: 0 auto;
}

.wechat-card .wechat-bubble {
  fill: #16bf45;
}

.wechat-card .wechat-eye {
  fill: #fff;
}

.contact-card small,
.qr-card figcaption {
  display: block;
  margin-top: 8px;
  color: #4a5b73;
  font-size: 14px;
  font-weight: 700;
}

.contact-card strong {
  display: block;
  margin-top: 6px;
  color: var(--blue-2);
  font-size: 20px;
  line-height: 1.25;
  word-break: break-word;
}

.qr-card img {
  width: 78px;
  margin: -4px auto 0;
  -webkit-touch-callout: default;
  user-select: auto;
}

.contact > p {
  width: min(1120px, 100%);
  margin: 26px auto 0;
  padding: 18px 0 14px;
  color: rgba(255,255,255,.92);
  text-align: center;
  font-size: 16px;
}

:focus-visible {
  outline: 3px solid rgba(255, 132, 25, .75);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr auto auto;
  }

  .nav-links {
    display: none;
  }

  .service-grid,
  .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .process-grid::before {
    display: none;
  }

  .process-grid {
    gap: 46px 22px;
  }

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

@media (max-width: 760px) {
  .site-header {
    grid-template-columns: 1fr auto;
    gap: 12px;
    min-height: 66px;
    padding: 10px 14px;
  }

  .brand-mark {
    flex-basis: 38px;
    width: 38px;
    height: 38px;
  }

  .brand strong {
    font-size: 17px;
  }

  .brand small,
  .top-cta {
    display: none;
  }

  .phone-link {
    font-size: 0;
  }

  .phone-link span {
    width: 40px;
    height: 40px;
    font-size: 0;
  }

  .phone-link span::before {
    width: 20px;
    height: 20px;
  }

  .hero {
    min-height: 0;
  }

  .hero h1 {
    font-size: 38px;
  }

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

  .hero-actions {
    gap: 12px;
    margin-top: 24px;
  }

  .hero-actions a {
    flex: 1 1 140px;
    min-width: 0;
    min-height: 50px;
    font-size: 16px;
  }

  .trust-strip,
  .service-grid,
  .benefit-grid,
  .process-grid,
  .case-grid,
  .customer-case-list,
  .partner-grid,
  .faq-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .trust-strip {
    width: calc(100% - 24px);
    margin-top: 14px;
  }

  .trust-strip div {
    justify-content: flex-start;
    min-height: 58px;
    padding: 10px 18px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .section {
    width: calc(100% - 24px);
    padding-top: 38px;
  }

  .section-title {
    gap: 12px;
    margin-bottom: 20px;
  }

  .section-title span {
    width: 28px;
  }

  .section-title h2 {
    font-size: 24px;
  }

  .benefit-grid article {
    min-height: 0;
  }

  .customer-case-lead {
    padding: 24px 20px;
  }

  .customer-case-lead b {
    font-size: 22px;
  }

  .customer-case-list article {
    min-height: 0;
  }

  .customer-case-list img {
    height: clamp(170px, 48vw, 210px);
  }

  .process-grid {
    padding-top: 0;
    gap: 16px;
  }

  .process-grid li {
    padding-top: 22px;
    text-align: left;
  }

  .process-grid b {
    position: static;
    float: left;
    width: 46px;
    height: 46px;
    margin: -4px 14px 18px 0;
    border-width: 4px;
    transform: none;
  }

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

  .contact {
    margin-top: 38px;
    padding: 20px 12px 0;
    background: linear-gradient(180deg, #f7fbff 0%, #eef7ff 80%, #00337a 80%, #00337a 100%);
  }

  .contact-card strong {
    font-size: 18px;
  }

  .qr-card img {
    width: min(180px, 72vw);
    margin-top: 0;
  }
}