:root {
  --ink: #172133;
  --muted: #59657a;
  --line: rgba(40, 92, 116, 0.12);
  --green: #25d77b;
  --blue: #0aa8ff;
  --deep: #098eaf;
  --bg: #f6fbff;
  --card: rgba(255, 255, 255, 0.86);
  --shadow: 0 22px 70px rgba(31, 88, 124, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #f3fbff 0%, #fff 44%, #f8fcff 100%);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 34px;
  min-height: 72px;
  padding: 12px clamp(22px, 9vw, 140px);
  background: rgba(246, 251, 255, 0.82);
  border-bottom: 1px solid rgba(255,255,255,.7);
  backdrop-filter: blur(20px);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(255,255,255,.78);
  box-shadow: 0 10px 28px rgba(14, 134, 165, .12);
}
.brand-mark svg { width: 31px; height: 31px; }
.brand-mark path {
  fill: none;
  stroke: #12b983;
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.brand strong, .brand small { display: block; }
.brand strong { font-size: 18px; line-height: 1.1; }
.brand small { color: var(--muted); font-size: 11px; }
.nav {
  display: flex;
  justify-content: center;
  gap: 38px;
  font-size: 16px;
  font-weight: 700;
}
.nav a { color: #344057; }
.nav a.active, .nav a:hover { color: #00a85f; }
.actions { display: flex; align-items: center; gap: 18px; }
.login { color: #23314c; font-weight: 700; }
.trial, .primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 30px;
  color: white;
  border-radius: 999px;
  font-weight: 800;
  background: linear-gradient(100deg, #33df78 0%, #08a8ff 100%);
  box-shadow: 0 14px 36px rgba(20, 173, 182, .24);
}
.menu {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: white;
  border-radius: 12px;
}
.menu svg { width: 24px; height: 24px; }
.menu path { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.hero {
  position: relative;
  min-height: 760px;
  padding: 82px 20px 0;
  overflow: hidden;
  text-align: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 35%, rgba(44, 222, 190, .26), transparent 22%),
    radial-gradient(circle at 24% 20%, rgba(64, 183, 255, .24), transparent 28%),
    linear-gradient(135deg, rgba(255,255,255,.2), rgba(180,235,255,.32));
}
.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: repeating-linear-gradient(135deg, rgba(68, 161, 188, .08) 0 2px, transparent 2px 86px);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero-copy { position: relative; z-index: 1; max-width: 920px; margin: 0 auto; }
.hero h1 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 58px);
  line-height: 1.18;
  font-weight: 850;
  color: #35415a;
}
.hero h1 span {
  background: linear-gradient(95deg, #27dd80, #08a8ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  margin: 22px auto 0;
  max-width: 760px;
  color: #40516b;
  font-size: 20px;
  line-height: 1.85;
}
.hero .primary-cta { margin-top: 28px; min-width: 228px; }
.hero-stage {
  position: relative;
  z-index: 1;
  width: min(1000px, calc(100% - 34px));
  margin: 72px auto 0;
  padding: 20px;
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 28px 28px 0 0;
  background: rgba(255,255,255,.42);
  box-shadow: var(--shadow);
}
.hero-stage img {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 20px 20px 0 0;
}

.client-strip, .why, .products, .solutions, .knowledge, .about, .contact {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}
.client-strip { padding: 58px 0 28px; text-align: center; }
.client-strip h2 {
  margin: 0;
  color: #536177;
  font-size: 18px;
  font-weight: 700;
}
.logos {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  margin-top: 22px;
}
.logos span {
  display: grid;
  place-items: center;
  min-height: 66px;
  color: #52647a;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.82);
}
.section-title { text-align: center; padding-top: 76px; }
.section-title h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 44px);
  line-height: 1.18;
}
.section-title p {
  max-width: 760px;
  margin: 14px auto 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}
.why-grid, .solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 34px;
}
.why-grid article, .solution-grid article, .product-card, .knowledge-card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 22px;
  box-shadow: 0 14px 44px rgba(44, 93, 122, .08);
}
.why-grid article {
  padding: 28px;
}
.icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: #fff;
  border-radius: 14px;
  background: linear-gradient(135deg, #20d883, #0aa8ff);
  font-weight: 850;
}
h3 { margin: 22px 0 10px; font-size: 22px; }
article p { margin: 0; color: var(--muted); line-height: 1.78; }
.product-list {
  display: grid;
  gap: 22px;
  margin-top: 36px;
}
.product-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
  min-height: 260px;
  padding: 34px;
  overflow: hidden;
}
.product-card small {
  color: #0ca47e;
  font-weight: 850;
  letter-spacing: .04em;
}
.product-card h3 { font-size: 32px; margin-top: 10px; }
.product-card a {
  display: inline-flex;
  margin-top: 20px;
  color: #079a8b;
  font-weight: 850;
}
.product-visual, .radar, .mini-flow {
  min-height: 190px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(36, 220, 130, .13), rgba(9, 168, 255, .14));
}
.product-visual {
  display: grid;
  gap: 12px;
  padding: 30px;
}
.product-visual span {
  display: block;
  height: 38px;
  border-radius: 12px;
  background: rgba(255,255,255,.9);
  box-shadow: 0 12px 28px rgba(18, 115, 148, .08);
}
.product-visual span:nth-child(2) { width: 76%; }
.product-visual span:nth-child(3) { width: 56%; }
.mini-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 20px;
}
.mini-flow b {
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  border-radius: 20px;
  background: white;
  color: #178c9f;
}
.mini-flow i {
  width: 34px;
  height: 2px;
  background: linear-gradient(90deg, #25d77b, #0aa8ff);
}
.radar {
  display: grid;
  place-items: center;
}
.radar span {
  width: 132px;
  height: 132px;
  border-radius: 50%;
  border: 2px solid rgba(13, 164, 181, .35);
  box-shadow: 0 0 0 36px rgba(13, 164, 181, .08), 0 0 0 72px rgba(37, 215, 123, .06);
}
.solution-grid { grid-template-columns: repeat(3, 1fr); }
.solution-grid article { padding: 24px; }
.solution-grid h3 { margin-top: 0; }
.knowledge-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 80px;
  padding: 42px;
  background: linear-gradient(135deg, rgba(255,255,255,.92), rgba(232,251,255,.86));
}
.knowledge-card h2 { margin: 0; font-size: 40px; }
.knowledge-card p { color: var(--muted); line-height: 1.8; }
.knowledge-card ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.knowledge-card li {
  padding: 15px 18px;
  border-radius: 14px;
  background: white;
  color: #40516b;
  font-weight: 700;
}
.about { padding-bottom: 20px; }
.contact {
  margin-top: 72px;
  padding: 58px 24px;
  text-align: center;
  border-radius: 28px;
  background: linear-gradient(100deg, #0ec980, #0ca8ff);
  color: white;
}
.contact h2 { margin: 0; font-size: clamp(30px, 3vw, 46px); }
.contact p { max-width: 720px; margin: 16px auto 26px; line-height: 1.8; }
.contact .primary-cta {
  color: #0a837e;
  background: white;
  box-shadow: none;
}
.footer {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  padding: 36px 20px 44px;
  color: #5d6a7f;
  font-size: 14px;
}

@media (max-width: 980px) {
  .topbar { grid-template-columns: auto 1fr auto; padding: 12px 20px; }
  .nav, .actions { display: none; }
  .menu { display: block; justify-self: end; }
  body.nav-open .nav {
    position: fixed;
    inset: 72px 16px auto 16px;
    display: grid;
    gap: 0;
    padding: 12px;
    background: white;
    border-radius: 18px;
    box-shadow: var(--shadow);
  }
  body.nav-open .nav a { padding: 14px; }
  .hero { min-height: auto; padding-top: 54px; }
  .hero-stage { margin-top: 44px; }
  .logos, .why-grid, .solution-grid, .product-card, .knowledge-card { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .brand small { display: none; }
  .topbar { min-height: 64px; }
  body.nav-open .nav { inset-top: 64px; }
  .hero { padding: 38px 16px 0; }
  .hero h1 { font-size: 34px; }
  .hero p { font-size: 16px; }
  .hero-stage { width: 100%; padding: 10px; border-radius: 20px 20px 0 0; }
  .hero-stage img { aspect-ratio: 1.25 / 1; }
  .client-strip, .why, .products, .solutions, .knowledge, .about, .contact { width: min(100% - 30px, 1180px); }
  body.nav-open .nav { inset: 64px 16px auto 16px; }
  .logos { grid-template-columns: repeat(2, 1fr); }
  .product-card { padding: 24px; }
  .product-card h3 { font-size: 26px; }
  .mini-flow { flex-wrap: wrap; }
  .mini-flow i { display: none; }
  .knowledge-card { padding: 26px; }
  .footer { display: grid; text-align: center; }
}