:root {
  --bg: #f6fbff;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: rgba(255, 255, 255, 0.92);
  --text: rgba(10, 22, 40, 0.92);
  --muted: rgba(10, 22, 40, 0.66);
  --muted-2: rgba(10, 22, 40, 0.56);
  --line: rgba(15, 35, 65, 0.12);
  --brand: #1f8fff;
  --brand-2: #55d6ff;
  --ok: #16a34a;
  --warn: #f59e0b;
  --shadow: 0 16px 38px rgba(15, 35, 65, 0.12);
  --r-lg: 20px;
  --r-md: 14px;
  --r-sm: 12px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% 0%, rgba(31, 143, 255, 0.14), transparent 60%),
    radial-gradient(900px 600px at 90% 20%, rgba(85, 214, 255, 0.16), transparent 55%),
    radial-gradient(900px 600px at 40% 90%, rgba(31, 143, 255, 0.08), transparent 55%), var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.55;
  letter-spacing: 0.2px;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  /* 科技感网格 + 细腻噪点 */
  background-image: linear-gradient(rgba(31, 143, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 143, 255, 0.06) 1px, transparent 1px),
    radial-gradient(1px 1px at 24px 18px, rgba(15, 35, 65, 0.1), transparent 55%),
    radial-gradient(1px 1px at 120px 80px, rgba(15, 35, 65, 0.08), transparent 55%);
  background-size: 64px 64px, 64px 64px, 140px 140px, 180px 180px;
  opacity: 0.55;
  mix-blend-mode: multiply;
}
body::after {
  content: "";
  position: fixed;
  inset: -20%;
  pointer-events: none;
  z-index: -1;
  background: radial-gradient(600px 360px at 20% 20%, rgba(31, 143, 255, 0.18), transparent 60%),
    radial-gradient(520px 320px at 85% 25%, rgba(85, 214, 255, 0.2), transparent 62%),
    radial-gradient(560px 360px at 55% 85%, rgba(31, 143, 255, 0.14), transparent 62%);
  filter: blur(10px);
  animation: floatGlow 14s ease-in-out infinite;
}

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

.container {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 10px;
  z-index: 999;
}
.skip:focus {
  left: 14px;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(246, 251, 255, 0.72);
  border-bottom: 1px solid rgba(15, 35, 65, 0.1);
}
.nav {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 220px;
}
.mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(31, 143, 255, 0.92), rgba(85, 214, 255, 0.9));
  box-shadow: 0 12px 24px rgba(31, 143, 255, 0.18);
  position: relative;
  overflow: hidden;
}
.mark::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.55), transparent 46%);
  transform: rotate(10deg);
}
.mark::before {
  content: "";
  position: absolute;
  inset: -60%;
  background: conic-gradient(from 180deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0));
  animation: spinSheen 3.8s linear infinite;
  opacity: 0.55;
  mix-blend-mode: overlay;
}
.brand-title {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}
.brand-title strong {
  font-size: 14px;
  letter-spacing: 0.5px;
}
.brand-title span {
  font-size: 12px;
  color: var(--muted);
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
nav a {
  font-size: 14px;
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: 160ms ease;
}
nav a:hover {
  color: var(--text);
  background: rgba(31, 143, 255, 0.08);
  border-color: rgba(31, 143, 255, 0.18);
}

.nav-cta {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 14px;
  padding: 11px 14px;
  border: 1px solid rgba(15, 35, 65, 0.14);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  font-size: 14px;
  transition: 160ms ease;
  white-space: nowrap;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(31, 143, 255, 0.24);
  background: rgba(255, 255, 255, 0.94);
}
.btn.primary {
  border-color: rgba(31, 143, 255, 0.28);
  background: linear-gradient(135deg, rgba(31, 143, 255, 0.12), rgba(85, 214, 255, 0.16));
  box-shadow: 0 14px 32px rgba(31, 143, 255, 0.16);
  position: relative;
  overflow: hidden;
}
.btn.primary::after {
  content: "";
  position: absolute;
  inset: -60% -40%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.65), transparent);
  transform: rotate(12deg) translateX(-40%);
  opacity: 0.35;
}
.btn.primary:hover::after {
  animation: sweep 750ms ease-out 1;
}
.btn svg {
  opacity: 0.9;
}

/* Hero */
.hero {
  padding: 72px 0 46px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 22px;
  align-items: stretch;
}
.hero-card {
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.72));
  border: 1px solid rgba(15, 35, 65, 0.1);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}
.hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(680px 220px at 20% 0%, rgba(31, 143, 255, 0.18), transparent 60%),
    radial-gradient(520px 220px at 80% 10%, rgba(85, 214, 255, 0.18), transparent 60%);
  opacity: 0.55;
}

.hero-main {
  padding: 34px 34px 28px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(31, 143, 255, 0.26);
  background: rgba(31, 143, 255, 0.08);
  color: rgba(10, 22, 40, 0.86);
  font-size: 12px;
}
.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--brand);
  box-shadow: 0 0 0 6px rgba(31, 143, 255, 0.14);
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.12;
  letter-spacing: 0.2px;
}
h1 strong {
  color: rgba(31, 143, 255, 0.92);
  font-weight: 800;
}
.grad-text {
  background: linear-gradient(90deg, rgba(31, 143, 255, 0.98), rgba(85, 214, 255, 0.98));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sub {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 58ch;
}

.hero-actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.pill-row {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pill {
  font-size: 12px;
  color: var(--muted);
  padding: 9px 12px;
  border: 1px solid rgba(15, 35, 65, 0.1);
  background: rgba(255, 255, 255, 0.72);
  border-radius: 999px;
}

.hero-side {
  padding: 18px;
  display: grid;
  gap: 12px;
}
.mini {
  border-radius: 16px;
  border: 1px solid rgba(15, 35, 65, 0.1);
  background: rgba(255, 255, 255, 0.7);
  padding: 14px 14px;
}
.mini h3 {
  margin: 0 0 6px;
  font-size: 14px;
}
.mini p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.kpi {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.kpi .mini {
  padding: 14px 12px;
  text-align: left;
}
.kpi strong {
  display: block;
  font-size: 18px;
  margin-bottom: 4px;
}
.kpi span {
  color: var(--muted);
  font-size: 12px;
}

/* Sections */
section {
  padding: 46px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.section-head h2 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.2px;
}
.section-head h2::after {
  content: "";
  display: block;
  width: 58px;
  height: 3px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(31, 143, 255, 0.9), rgba(85, 214, 255, 0.75));
  opacity: 0.85;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 62ch;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card {
  border-radius: var(--r-lg);
  border: 1px solid rgba(15, 35, 65, 0.1);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 55px rgba(15, 35, 65, 0.1);
  padding: 18px 18px;
  position: relative;
  overflow: hidden;
  min-height: 150px;
  transition: 180ms ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: -2px;
  background: radial-gradient(520px 140px at 20% 0%, rgba(31, 143, 255, 0.1), transparent 70%);
  opacity: 0.8;
  pointer-events: none;
}

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(15, 35, 65, 0.12);
  background: rgba(31, 143, 255, 0.06);
  margin-bottom: 12px;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(31, 143, 255, 0.22);
  box-shadow: 0 22px 70px rgba(31, 143, 255, 0.14);
}
.card h3 {
  position: relative;
  margin: 0 0 8px;
  font-size: 16px;
}
.card p {
  position: relative;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.tags {
  position: relative;
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tag {
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15, 35, 65, 0.1);
  color: rgba(10, 22, 40, 0.68);
  background: rgba(255, 255, 255, 0.72);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}
.panel {
  border-radius: var(--r-lg);
  border: 1px solid rgba(15, 35, 65, 0.1);
  background: rgba(255, 255, 255, 0.82);
  padding: 18px;
  transition: 180ms ease;
}
.panel:hover {
  border-color: rgba(31, 143, 255, 0.18);
}

.steps {
  display: grid;
  gap: 12px;
}
.step {
  border-radius: 16px;
  border: 1px solid rgba(15, 35, 65, 0.1);
  background: rgba(255, 255, 255, 0.78);
  padding: 14px 14px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}
.num {
  width: 34px;
  height: 34px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(31, 143, 255, 0.22);
  background: rgba(31, 143, 255, 0.08);
  color: rgba(10, 22, 40, 0.86);
  font-weight: 700;
  font-size: 13px;
}
.step h4 {
  margin: 0 0 6px;
  font-size: 14px;
}
.step p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* 联系我们模块已移除（如需恢复可再添加） */

footer {
  padding: 24px 0 36px;
  border-top: 1px solid rgba(15, 35, 65, 0.1);
  color: var(--muted);
  font-size: 13px;
}
.foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.beian {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.beian a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed rgba(31, 143, 255, 0.28);
  padding-bottom: 2px;
  transition: 160ms ease;
}
.beian a:hover {
  color: rgba(10, 22, 40, 0.9);
  border-bottom-color: rgba(31, 143, 255, 0.55);
}

/* Responsive */
@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .kpi {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 820px) {
  nav ul {
    display: none;
  }
  .brand {
    min-width: unset;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .split {
    grid-template-columns: 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
  body::after {
    animation: none !important;
  }
}

@keyframes floatGlow {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(0, 1.2%, 0) scale(1.02);
  }
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
}
@keyframes spinSheen {
  to {
    transform: rotate(360deg);
  }
}
@keyframes sweep {
  0% {
    transform: rotate(12deg) translateX(-65%);
    opacity: 0;
  }
  20% {
    opacity: 0.35;
  }
  100% {
    transform: rotate(12deg) translateX(65%);
    opacity: 0;
  }
}