* { box-sizing: border-box; }

:root {
  --blue: #3d8bf2;
  --blue-hover: #2f7ae5;
  --navy: #1b2430;
  --title: #1d2129;
  --body: #4e5969;
  --muted: #86909c;
  --line: #e8eaed;
  --gray: #f5f7fa;
}

html, body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--body);
  background: #fff;
  line-height: 1.7;
}

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 32px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.bar {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

.mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-link {
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
}

.nav-link:hover { color: #fff; }

.contact {
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff !important;
  border: none;
  border-radius: 24px;
  padding: 8px 20px;
  font-weight: 600;
  font-size: 14px;
}

.btn:hover { background: var(--blue-hover); }

.btn.lg {
  padding: 14px 36px;
  font-size: 16px;
}

.hero {
  display: flex;
  align-items: center;
  min-height: calc(100svh - 68px);
  padding: 48px 0;
  background:
    radial-gradient(ellipse 50% 70% at 85% 40%, rgba(61, 139, 242, 0.14), transparent 60%),
    var(--navy);
}

.hero-inner {
  width: 100%;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.kicker {
  display: inline-block;
  margin-bottom: 10px;
  color: #8bbef5;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-copy h1.hero-title {
  margin: 0;
  font-size: 42px;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.hero-line {
  display: block;
  opacity: 0;
  transform: translateY(18px);
  animation: hero-rise 0.7s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-line-1 {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.78em;
  font-weight: 600;
  letter-spacing: 0.04em;
  animation-delay: 0.08s;
}

.hero-line-2 {
  font-size: 1em;
  font-weight: 800;
  background: linear-gradient(105deg, #ffffff 0%, #9ec5ff 42%, #3d8bf2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 28px rgba(61, 139, 242, 0.35));
  animation-delay: 0.22s;
  position: relative;
}

.hero-line-2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.06em;
  width: 4.2em;
  height: 0.12em;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(61, 139, 242, 0.85), rgba(61, 139, 242, 0));
  opacity: 0;
  animation: hero-underline 0.55s ease 0.55s forwards;
}

@keyframes hero-rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes hero-underline {
  to { opacity: 1; }
}

.cta { display: flex; }

.globe {
  width: min(100%, 440px);
  margin-left: auto;
  color: #8eb8f0;
}

.globe svg {
  width: 100%;
  height: auto;
  display: block;
  animation: spin 90s linear infinite;
  transform-origin: 50% 50%;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.section {
  padding: 48px 0;
}

.section.gray { background: var(--gray); }

.section-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 28px;
}

.section-head h2 {
  margin: 0 0 8px;
  font-size: 26px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: -0.02em;
}

.section-head p {
  margin: 0;
  font-size: 15px;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.steps li {
  background: #fff;
  border-radius: 10px;
  padding: 20px 20px 22px;
}

.steps span {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #eaf3ff;
  color: var(--blue);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 10px;
}

.steps h3,
.scenes h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--title);
}

.steps p,
.scenes p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.scenes li {
  background: var(--gray);
  border-radius: 10px;
  padding: 20px 22px 22px;
}

footer {
  padding: 36px 0 40px;
  background: var(--navy);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  text-align: center;
}

.beian {
  margin-top: 0;
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.beian a {
  color: rgba(255, 255, 255, 0.55);
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.beian a:hover { color: #fff; }

footer .copy {
  margin-top: 12px;
}

.gongan-link img {
  width: 14px;
  height: 14px;
  display: block;
  margin-right: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .globe svg { animation: none; }
  .hero-line,
  .hero-line-2::after {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 960px) {
  .hero { min-height: auto; padding: 40px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 28px; }
  .hero-copy h1.hero-title { font-size: 34px; }
  .globe { margin: 0 auto; width: min(58%, 260px); }
  .steps { grid-template-columns: 1fr; }
  .scenes { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 22px; }
}

@media (max-width: 640px) {
  nav .nav-link[href^="#"],
  nav .contact { display: none; }
  .hero-copy h1.hero-title { font-size: 26px; gap: 4px; }
  .section { padding: 36px 0; }
}