* {
  box-sizing: border-box;
}

:root {
  --bg: #f5f7fb;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --text: #111827;
  --muted: #5b6475;
  --line: rgba(17, 24, 39, 0.08);
  --primary: #1f6fff;
  --primary-dark: #0f4ecc;
  --shadow: 0 18px 50px rgba(16, 24, 40, 0.10);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1180px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7f8fb 0%, #eef2f8 100%);
  line-height: 1.65;
}

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

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

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 20%, rgba(31, 111, 255, 0.10), transparent 28%),
    radial-gradient(circle at 85% 10%, rgba(31, 111, 255, 0.08), transparent 26%),
    radial-gradient(circle at 50% 100%, rgba(17, 24, 39, 0.04), transparent 34%);
  z-index: -1;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(245, 247, 251, 0.72);
  border-bottom: 1px solid rgba(17, 24, 39, 0.05);
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-logo {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow);
  border: 1px solid rgba(17, 24, 39, 0.05);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 18px;
}

.brand-text span {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-top: 4px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: #364152;
  font-size: 15px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
  border: 1px solid transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, #4b8dff 100%);
  box-shadow: 0 12px 28px rgba(31, 111, 255, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, #3576f6 100%);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255,255,255,0.7);
  border-color: rgba(17,24,39,0.08);
  box-shadow: 0 10px 24px rgba(17,24,39,0.06);
}

.glow {
  animation: pulseGlow 2.2s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 12px 28px rgba(31, 111, 255, 0.28); }
  50% { box-shadow: 0 16px 34px rgba(31, 111, 255, 0.42); }
}

.hero {
  padding: 72px 0 52px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.tag,
.section-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(17,24,39,0.06);
  color: #3a4a63;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: clamp(38px, 5vw, 66px);
  line-height: 1.08;
  margin: 18px 0 18px;
  letter-spacing: -0.03em;
}

.hero p {
  margin: 0;
  font-size: 18px;
  color: var(--muted);
  max-width: 760px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-points span {
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 14px;
  background: rgba(255,255,255,0.68);
  border: 1px solid rgba(17,24,39,0.06);
  color: #445066;
}

.hero-card,
.trust-box,
.card,
.feature-card,
.contact-box,
.contact-card,
.step {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.hero-card {
  border-radius: 28px;
  overflow: hidden;
}

.hero-card-top {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.65);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(17,24,39,0.2);
}

.hero-card-body {
  padding: 24px;
}

.mini-panel {
  padding: 20px;
  border-radius: 20px;
  background: rgba(17,24,39,0.04);
  border: 1px solid rgba(17,24,39,0.05);
}

.mini-title {
  font-weight: 800;
  margin-bottom: 12px;
  font-size: 18px;
}

.mini-panel ul {
  margin: 0;
  padding-left: 18px;
  color: #425168;
}

.metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.metric {
  border-radius: 18px;
  padding: 16px 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(17,24,39,0.05);
  text-align: center;
}

.metric strong {
  display: block;
  font-size: 24px;
  line-height: 1;
  margin-bottom: 8px;
}

.metric span {
  font-size: 13px;
  color: var(--muted);
}

.trust {
  padding: 12px 0 28px;
}

.trust-box {
  border-radius: 26px;
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 22px;
  align-items: center;
  padding: 24px;
}

.trust-logo img {
  width: 100%;
  border-radius: 50%;
}

.trust-copy h2,
.section-head h2,
.contact-copy h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  margin: 14px 0 10px;
}

.trust-copy p,
.section-head p,
.contact-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.section {
  padding: 76px 0;
}

.section.alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.28), rgba(255,255,255,0.12));
  border-top: 1px solid rgba(17,24,39,0.04);
  border-bottom: 1px solid rgba(17,24,39,0.04);
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.cards {
  display: grid;
  gap: 20px;
}

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

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

.card,
.feature-card {
  border-radius: 24px;
  padding: 24px;
}

.card h3,
.feature-card h3,
.contact-card h3,
.step h3 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.2;
}

.card p,
.feature-card p,
.step p {
  margin: 0;
  color: var(--muted);
}

.card ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: #425168;
}

.scenario-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.scenario-list span,
.keyword-grid span {
  padding: 14px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  border: 1px solid rgba(17,24,39,0.07);
  box-shadow: 0 8px 18px rgba(17,24,39,0.05);
  font-weight: 600;
  color: #334155;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.step {
  border-radius: 22px;
  padding: 22px;
}

.step strong {
  display: inline-flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(31, 111, 255, 0.12), rgba(31, 111, 255, 0.04));
  border: 1px solid rgba(31, 111, 255, 0.18);
  color: var(--primary);
  font-size: 20px;
  margin-bottom: 14px;
}

.contact {
  padding: 84px 0;
}

.contact-box {
  border-radius: 30px;
  padding: 32px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
}

.contact-list {
  display: grid;
  gap: 10px;
  margin-top: 20px;
  color: #334155;
}

.contact-card {
  border-radius: 24px;
  padding: 24px;
  background: linear-gradient(180deg, rgba(17,24,39,0.86), rgba(17,24,39,0.96));
  color: #fff;
}

.keyword-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.keyword-grid span {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.10);
  box-shadow: none;
}

.site-footer {
  padding: 28px 0 40px;
  border-top: 1px solid rgba(17,24,39,0.06);
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-wrap p {
  margin: 4px 0 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: #445066;
}

.float-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, #4b8dff 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  box-shadow: 0 18px 32px rgba(31, 111, 255, 0.30);
  z-index: 60;
}

@media (max-width: 1120px) {
  .hero-grid,
  .contact-box,
  .cards.three,
  .cards.two,
  .timeline {
    grid-template-columns: 1fr 1fr;
  }

  .timeline .step:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 820px) {
  .nav {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-grid,
  .contact-box,
  .cards.three,
  .cards.two,
  .timeline,
  .trust-box {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 40px;
  }

  .section,
  .contact {
    padding: 58px 0;
  }

  .trust-box {
    padding: 20px;
  }

  .timeline .step:last-child {
    grid-column: auto;
  }

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

@media (max-width: 520px) {
  .container {
    width: min(var(--container), calc(100% - 22px));
  }

  .brand-logo {
    width: 44px;
    height: 44px;
  }

  .brand-text strong {
    font-size: 16px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero p,
  .trust-copy p,
  .section-head p,
  .contact-copy p {
    font-size: 16px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .float-cta {
    width: 58px;
    height: 58px;
    right: 14px;
    bottom: 14px;
  }
}


.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.gallery-item {
  display: block;
  border-radius: 24px;
  overflow: hidden;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(17,24,39,0.08);
  box-shadow: var(--shadow);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 38px rgba(16, 24, 40, 0.14);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #eef2f8;
}

.gallery-item span {
  display: block;
  padding: 14px 16px;
  font-weight: 700;
  color: #1f2937;
}

@media (max-width: 1120px) {
  .gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
}

@media (max-width: 820px) {
  .gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
}


.float-cta {
  background: transparent;
  box-shadow: none;
  overflow: hidden;
  border-radius: 50%;
  padding: 0;
}

.float-cta img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 50%;
  box-shadow: 0 18px 32px rgba(31, 111, 255, 0.30);
}