:root {
  --ink: #19122a;
  --muted: #625a74;
  --line: rgba(92, 70, 142, 0.16);
  --violet: #7354f4;
  --violet-deep: #35126f;
  --violet-soft: #a777ff;
  --cyan: #4ed7ff;
  --white: #ffffff;
  --surface: #fbf9ff;
  --shadow: 0 22px 70px rgba(53, 18, 111, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  background: var(--surface);
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  height: 76px;
  padding: 0 clamp(20px, 4vw, 64px);
  color: var(--white);
  transition:
    background 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 12px 36px rgba(53, 18, 111, 0.12);
  backdrop-filter: blur(18px);
}

.brand {
  width: 150px;
  min-width: 120px;
}

.brand img {
  width: 100%;
  filter: brightness(0) invert(1);
  transition: filter 0.25s ease;
}

.site-header.is-scrolled .brand img {
  filter: none;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  font-size: 15px;
  white-space: nowrap;
}

.nav a {
  opacity: 0.86;
}

.nav a:hover {
  opacity: 1;
}

.header-action,
.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}

.header-action {
  color: var(--white);
  background: linear-gradient(135deg, var(--violet), var(--violet-soft));
  box-shadow: 0 12px 28px rgba(115, 84, 244, 0.28);
}

.primary-button {
  color: var(--white);
  background: linear-gradient(135deg, #6d46f7 0%, #a06cff 50%, #57d8ff 100%);
  box-shadow: 0 18px 42px rgba(111, 77, 241, 0.34);
}

.primary-button.light {
  color: var(--violet-deep);
  background: var(--white);
  box-shadow: 0 18px 42px rgba(255, 255, 255, 0.22);
}

.secondary-button {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.48);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px);
}

.hero {
  position: relative;
  min-height: 94vh;
  display: grid;
  align-items: center;
  padding: 130px clamp(20px, 6vw, 86px) 92px;
  overflow: hidden;
  color: var(--white);
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  transform: scale(1.04);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(25, 18, 42, 0.95) 0%, rgba(54, 18, 112, 0.74) 48%, rgba(71, 49, 150, 0.3) 100%),
    radial-gradient(circle at 78% 30%, rgba(103, 84, 244, 0.45), transparent 36%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(760px, 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--violet);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .eyebrow,
.contact .eyebrow {
  color: #cfc3ff;
}

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

h1 {
  margin-bottom: 22px;
  font-size: clamp(44px, 6vw, 86px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  width: min(680px, 100%);
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(18px, 2vw, 23px);
}

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

.hero-metrics {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(780px, 100%);
  margin-top: 68px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.11);
  backdrop-filter: blur(16px);
}

.hero-metrics div {
  padding: 24px;
  background: rgba(255, 255, 255, 0.07);
}

.hero-metrics strong,
.achievement-strip strong {
  display: block;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.15;
}

.hero-metrics span,
.achievement-strip span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 14px;
}

.section {
  padding: clamp(72px, 9vw, 126px) clamp(20px, 6vw, 86px);
}

.section-heading {
  width: min(840px, 100%);
  margin-bottom: 42px;
}

.section-heading h2,
.alipay h2,
.contact h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.15;
  letter-spacing: 0;
}

.intro {
  background:
    linear-gradient(180deg, #ffffff 0%, #f8f3ff 100%);
}

.intro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  gap: clamp(32px, 5vw, 70px);
  align-items: stretch;
}

.intro-text {
  display: grid;
  align-content: center;
  gap: 18px;
  color: var(--muted);
  font-size: clamp(17px, 1.6vw, 22px);
}

.intro-text p {
  margin: 0;
}

.achievement-strip {
  display: grid;
  gap: 14px;
}

.achievement-strip div,
.service-card,
.honor-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.achievement-strip div {
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(116, 84, 244, 0.96), rgba(168, 119, 255, 0.9)),
    #7354f4;
  color: var(--white);
}

.geo {
  background: #ffffff;
}

.geo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  padding: 30px;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 70px rgba(53, 18, 111, 0.2);
}

.service-card span {
  display: block;
  margin-bottom: 28px;
  color: var(--violet);
  font-size: 15px;
  font-weight: 800;
}

.service-card h3 {
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.25;
}

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

.clients {
  background: linear-gradient(180deg, #f8f3ff 0%, #ffffff 100%);
}

.seo-keywords {
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f2ff 100%);
}

.keyword-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(28px, 5vw, 66px);
  align-items: center;
}

.keyword-copy {
  color: var(--muted);
  font-size: clamp(17px, 1.6vw, 21px);
}

.keyword-copy p {
  margin: 0;
}

.keyword-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.keyword-cloud span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(115, 84, 244, 0.24);
  border-radius: 999px;
  color: var(--violet-deep);
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 14px 34px rgba(53, 18, 111, 0.08);
  font-weight: 800;
  font-size: 14px;
}

.clients-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(420px, 1.12fr);
  gap: clamp(30px, 5vw, 66px);
  align-items: center;
}

.client-copy h3 {
  margin-bottom: 16px;
  font-size: clamp(24px, 2.6vw, 34px);
  line-height: 1.25;
}

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

.client-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.client-tags span,
.capability-row span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid rgba(115, 84, 244, 0.22);
  border-radius: 999px;
  color: var(--violet-deep);
  background: rgba(255, 255, 255, 0.72);
  font-weight: 700;
  font-size: 14px;
}

.logo-wall {
  margin: 0;
  padding: 26px;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.logo-wall img {
  width: 100%;
  border-radius: 4px;
}

.alipay {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
  gap: clamp(28px, 5vw, 74px);
  align-items: center;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(44, 17, 92, 0.98) 0%, rgba(103, 68, 231, 0.95) 52%, rgba(148, 103, 255, 0.94) 100%),
    var(--violet-deep);
}

.alipay p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 18px;
}

.alipay .eyebrow {
  color: #ddd5ff;
}

.capability-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.capability-row span {
  border-color: rgba(255, 255, 255, 0.26);
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.phone-showcase {
  min-width: 0;
}

.phone-showcase img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 30px 90px rgba(20, 5, 54, 0.38);
}

.honors {
  background: #ffffff;
}

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

.honor-card {
  display: grid;
  grid-template-rows: 220px auto;
  margin: 0;
  padding: 24px;
}

.honor-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.honor-card figcaption {
  margin-top: 18px;
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}

.faq {
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f2ff 100%);
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.faq-item {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}

.faq-item h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.28;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.contact {
  padding: clamp(82px, 10vw, 132px) clamp(20px, 6vw, 86px);
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(35, 12, 72, 0.96), rgba(119, 80, 244, 0.95)),
    var(--violet-deep);
}

.contact-inner {
  width: min(920px, 100%);
}

.contact p {
  width: min(720px, 100%);
  color: rgba(255, 255, 255, 0.78);
  font-size: 19px;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 70px;
    flex-wrap: wrap;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .intro-layout,
  .clients-layout,
  .keyword-layout,
  .alipay {
    grid-template-columns: 1fr;
  }

  .geo-grid,
  .honor-grid,
  .faq-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    padding-top: 156px;
  }
}

@media (max-width: 640px) {
  .brand {
    width: 128px;
  }

  .header-action {
    min-height: 40px;
    padding: 0 16px;
    font-size: 14px;
  }

  .nav {
    font-size: 14px;
  }

  .hero {
    min-height: 100vh;
    padding-bottom: 54px;
  }

  .hero-actions {
    display: grid;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
    margin-top: 42px;
  }

  .section {
    padding-top: 66px;
    padding-bottom: 66px;
  }

  .geo-grid,
  .honor-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .honor-card {
    grid-template-rows: 190px auto;
  }

  .logo-wall {
    padding: 14px;
  }
}