:root {
  --bg: #05070d;
  --bg-2: #08111f;
  --panel: rgba(10, 22, 39, 0.72);
  --panel-strong: rgba(13, 31, 55, 0.9);
  --line: rgba(126, 223, 255, 0.18);
  --line-strong: rgba(126, 223, 255, 0.38);
  --text: #edf7ff;
  --muted: #9db3c7;
  --subtle: #657a90;
  --cyan: #38e8ff;
  --gold: #f5c76b;
  --blue: #5d7dff;
  --green: #65ffc8;
  --danger: #ff6f9f;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
  --radius: 24px;
  --radius-lg: 36px;
  --max: 1180px;
  --font-sans: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  --font-serif: "STZhongsong", "SimSun", "Songti SC", "Microsoft YaHei", serif;
  --font-display: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at 12% 8%, rgba(56, 232, 255, 0.18), transparent 31rem),
    radial-gradient(circle at 88% 12%, rgba(245, 199, 107, 0.14), transparent 28rem),
    radial-gradient(circle at 50% 95%, rgba(93, 125, 255, 0.18), transparent 34rem),
    linear-gradient(135deg, #03050a 0%, #07101d 42%, #030712 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(126, 223, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 223, 255, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.82), transparent 90%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 4px),
    radial-gradient(circle at 50% 50%, transparent, rgba(0, 0, 0, 0.26));
  mix-blend-mode: screen;
}

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

img,
svg {
  max-width: 100%;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(126, 223, 255, 0.13);
  background: rgba(3, 7, 16, 0.74);
  backdrop-filter: blur(22px);
}

.nav {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 15px;
  display: grid;
  place-items: center;
  color: #04101a;
  font-family: var(--font-display);
  font-size: 25px;
  background:
    linear-gradient(135deg, rgba(56, 232, 255, 0.96), rgba(245, 199, 107, 0.92)),
    radial-gradient(circle, white, transparent);
  box-shadow: 0 0 32px rgba(56, 232, 255, 0.28);
}

.brand-title {
  display: block;
  font-family: var(--font-serif);
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.1;
}

.brand-subtitle {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 10px 12px;
  color: #cfe4f7;
  font-size: 14px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
  border-color: var(--line-strong);
  background: rgba(56, 232, 255, 0.08);
  box-shadow: inset 0 0 22px rgba(56, 232, 255, 0.05);
}

.menu-toggle {
  display: none;
  color: white;
  background: rgba(56, 232, 255, 0.1);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
}

.hero {
  position: relative;
  padding: 92px 0 76px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  gap: 46px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  color: #d7f9ff;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(56, 232, 255, 0.07);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-serif);
  letter-spacing: -0.02em;
}

h1 {
  margin-top: 24px;
  font-size: clamp(42px, 7.2vw, 86px);
  line-height: 0.98;
}

h2 {
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.08;
}

h3 {
  font-size: 23px;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(100deg, #ffffff 10%, var(--cyan) 45%, var(--gold) 92%);
  -webkit-background-clip: text;
  background-clip: text;
}

.lead {
  margin: 24px 0 0;
  color: #b7cadc;
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 13px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: white;
  background: rgba(255, 255, 255, 0.04);
  transition: 0.22s ease;
}

.btn.primary {
  color: #05111a;
  border-color: transparent;
  background: linear-gradient(135deg, var(--cyan), var(--gold));
  box-shadow: 0 14px 46px rgba(56, 232, 255, 0.18);
  font-weight: 700;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 56px rgba(0, 0, 0, 0.34);
}

.orbital {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 50% 42%, rgba(56, 232, 255, 0.2), transparent 10rem),
    linear-gradient(160deg, rgba(13, 31, 55, 0.78), rgba(3, 8, 16, 0.52));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.orbital::before,
.orbital::after {
  content: "";
  position: absolute;
  inset: 58px;
  border: 1px solid rgba(126, 223, 255, 0.18);
  border-radius: 50%;
  transform: rotate(-18deg) scaleX(1.22);
}

.orbital::after {
  inset: 116px;
  border-color: rgba(245, 199, 107, 0.24);
  transform: rotate(28deg) scaleX(1.35);
}

.core {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 178px;
  height: 178px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 35% 30%, white, rgba(56, 232, 255, 0.95) 18%, rgba(93, 125, 255, 0.48) 48%, rgba(3, 8, 16, 0.1) 70%),
    linear-gradient(135deg, rgba(56, 232, 255, 0.4), rgba(245, 199, 107, 0.2));
  box-shadow: 0 0 70px rgba(56, 232, 255, 0.36), inset 0 0 34px rgba(255, 255, 255, 0.34);
}

.floating-card {
  position: absolute;
  z-index: 3;
  max-width: 236px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(5, 13, 25, 0.74);
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.28);
}

.floating-card strong {
  display: block;
  margin-bottom: 7px;
  color: white;
}

.floating-card span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.floating-card:nth-child(2) {
  left: 32px;
  top: 34px;
}

.floating-card:nth-child(3) {
  right: 34px;
  top: 94px;
}

.floating-card:nth-child(4) {
  left: 52px;
  bottom: 58px;
}

.floating-card:nth-child(5) {
  right: 42px;
  bottom: 36px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.metric {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.035);
}

.metric b {
  display: block;
  color: var(--cyan);
  font-size: 26px;
  font-family: var(--font-serif);
}

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

.section {
  padding: 72px 0;
}

.section.alt {
  background: linear-gradient(180deg, transparent, rgba(7, 17, 31, 0.54), transparent);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.55fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 34px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.9;
}

.grid {
  display: grid;
  gap: 18px;
}

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

.grid.four {
  grid-template-columns: repeat(4, 1fr);
}

.grid.two {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.022)),
    rgba(8, 18, 34, 0.62);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.18);
  overflow: hidden;
  transition: transform 0.24s ease, border-color 0.24s ease, background 0.24s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 20%) var(--my, 10%), rgba(56, 232, 255, 0.18), transparent 13rem);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  background-color: rgba(11, 27, 48, 0.82);
}

.card:hover::before {
  opacity: 1;
}

.card > * {
  position: relative;
  z-index: 1;
}

.kicker {
  display: block;
  margin-bottom: 16px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.card p,
.rich p,
.timeline p,
.list p {
  color: var(--muted);
  line-height: 1.85;
}

.card p:last-child {
  margin-bottom: 0;
}

.icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  display: grid;
  place-items: center;
  border-radius: 17px;
  color: var(--cyan);
  border: 1px solid var(--line);
  background: rgba(56, 232, 255, 0.08);
  font-weight: 900;
}

.page-hero {
  padding: 78px 0 54px;
  border-bottom: 1px solid rgba(126, 223, 255, 0.1);
}

.page-hero .lead {
  max-width: 820px;
}

.breadcrumb {
  margin-bottom: 20px;
  color: var(--subtle);
  font-size: 14px;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 0.62fr);
  gap: 28px;
  align-items: start;
}

.panel {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.feature-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.feature-list li {
  display: flex;
  gap: 12px;
  color: #c8d8e7;
  line-height: 1.7;
}

.feature-list li::before {
  content: "✦";
  color: var(--cyan);
}

.process {
  counter-reset: step;
}

.process .card {
  padding-left: 88px;
}

.process .card::after {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 26px;
  top: 28px;
  color: rgba(56, 232, 255, 0.54);
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 900;
}

.case-tag,
.tag {
  display: inline-flex;
  margin: 0 8px 8px 0;
  padding: 7px 10px;
  color: #d7f9ff;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(56, 232, 255, 0.06);
  font-size: 12px;
}

.case-card {
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.case-visual {
  height: 130px;
  margin: -8px -8px 24px;
  border-radius: 20px;
  border: 1px solid rgba(126, 223, 255, 0.16);
  background:
    radial-gradient(circle at 28% 28%, rgba(56, 232, 255, 0.48), transparent 7rem),
    radial-gradient(circle at 78% 58%, rgba(245, 199, 107, 0.4), transparent 7rem),
    linear-gradient(135deg, rgba(93, 125, 255, 0.18), rgba(255, 255, 255, 0.04));
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  position: relative;
  padding: 24px 24px 24px 64px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.035);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 28px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 20px rgba(245, 199, 107, 0.45);
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 22px;
}

.form {
  display: grid;
  gap: 14px;
}

input,
textarea,
select {
  width: 100%;
  color: white;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(3, 9, 18, 0.72);
  padding: 14px 15px;
  font: inherit;
  outline: none;
}

textarea {
  min-height: 132px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(56, 232, 255, 0.08);
}

.cta {
  position: relative;
  padding: 46px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 12% 20%, rgba(56, 232, 255, 0.22), transparent 18rem),
    radial-gradient(circle at 92% 30%, rgba(245, 199, 107, 0.18), transparent 18rem),
    linear-gradient(135deg, rgba(12, 33, 58, 0.92), rgba(4, 9, 17, 0.9));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.cta p {
  color: var(--muted);
  line-height: 1.85;
  max-width: 780px;
}

.footer {
  padding: 58px 0 34px;
  border-top: 1px solid rgba(126, 223, 255, 0.12);
  background: rgba(2, 5, 10, 0.66);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 0.7fr);
  gap: 30px;
}

.footer h4 {
  margin: 0 0 14px;
  color: white;
}

.footer a,
.footer p {
  display: block;
  margin: 9px 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.footer a:hover {
  color: var(--cyan);
}

.copyright {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(126, 223, 255, 0.1);
  color: var(--subtle);
  font-size: 13px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.66s ease, transform 0.66s ease;
}

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

@media (max-width: 1020px) {
  .hero-grid,
  .section-head,
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .grid.three,
  .grid.four,
  .metric-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .nav {
    height: auto;
    min-height: 72px;
    align-items: flex-start;
    padding: 14px 0;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 76px;
    display: none;
    padding: 14px;
    justify-content: flex-start;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(3, 7, 16, 0.96);
  }

  .nav-links.open {
    display: flex;
  }

  .hero {
    padding-top: 54px;
  }

  .orbital {
    min-height: 430px;
  }

  .floating-card {
    position: relative;
    inset: auto !important;
    margin: 14px;
    max-width: none;
  }

  .core {
    display: none;
  }

  .grid.two,
  .grid.three,
  .grid.four,
  .metric-strip,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .container {
    width: min(100% - 28px, var(--max));
  }

  .section {
    padding: 52px 0;
  }

  .cta {
    padding: 30px;
  }
}