:root {
  color-scheme: dark;
  --bg: #07101f;
  --panel: rgba(25, 38, 59, 0.82);
  --panel-strong: #172238;
  --border: rgba(147, 178, 216, 0.22);
  --text: #f7fbff;
  --muted: #9fb0c7;
  --teal: #14c8b4;
  --teal-2: #39ead8;
  --blue: #4d7cff;
  --pink: #9d65ff;
  --warning: #ffd166;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 2%, rgba(29, 177, 189, 0.23), transparent 24rem),
    radial-gradient(circle at 12% 88%, rgba(20, 200, 180, 0.16), transparent 18rem),
    linear-gradient(rgba(90, 117, 159, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 117, 159, 0.065) 1px, transparent 1px),
    var(--bg);
  background-size: auto, auto, 64px 64px, 64px 64px, auto;
}

a {
  color: var(--teal-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code {
  border: 1px solid rgba(122, 154, 198, 0.22);
  border-radius: 6px;
  padding: 0.12rem 0.36rem;
  color: #87fff0;
  background: rgba(7, 16, 31, 0.62);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 31, 0.72);
  border-bottom: 1px solid rgba(147, 178, 216, 0.13);
}

.nav {
  width: min(1160px, calc(100vw - 32px));
  margin: 0 auto;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 800;
  font-size: 1.08rem;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 0 28px rgba(40, 227, 255, 0.28);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.94rem;
}

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

.nav-links .nav-cta {
  color: #06131f;
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  padding: 0.62rem 0.9rem;
  border-radius: 8px;
  font-weight: 700;
}

main {
  width: min(1160px, calc(100vw - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 460px);
  gap: 56px;
  align-items: center;
  min-height: 520px;
  padding: 72px 0 40px;
}

.eyebrow,
.section-heading p {
  color: var(--teal-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 800;
}

.hero h1 {
  margin: 14px 0 16px;
  font-size: clamp(3rem, 8vw, 5.9rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero p {
  max-width: 620px;
  color: #c7d3e5;
  font-size: 1.15rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 8px;
  padding: 0 1.08rem;
  font-weight: 800;
  border: 1px solid var(--border);
}

.button.primary {
  color: #041524;
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  box-shadow: 0 16px 44px rgba(20, 200, 180, 0.22);
}

.button.secondary {
  color: var(--text);
  background: rgba(23, 34, 56, 0.82);
}

.hero-panel,
.table-card,
.step,
.client-card,
.support,
.faq details {
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-panel {
  border-radius: 12px;
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  gap: 8px;
  padding: 16px;
  background: rgba(30, 45, 69, 0.88);
  border-bottom: 1px solid var(--border);
}

.terminal-bar span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-bar span:nth-child(1) { background: #ff5d5d; }
.terminal-bar span:nth-child(2) { background: #ffc857; }
.terminal-bar span:nth-child(3) { background: #31d17b; }

pre {
  margin: 0;
  padding: 28px;
  overflow-x: auto;
}

pre code {
  border: 0;
  padding: 0;
  background: transparent;
  color: #9fffea;
  font-size: 1rem;
  line-height: 1.85;
}

.notice-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 24px 0 72px;
}

.notice-grid article {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
  background: rgba(23, 34, 56, 0.62);
}

.notice-grid strong {
  display: block;
  margin-bottom: 8px;
}

.notice-grid span {
  color: var(--teal-2);
  font-weight: 800;
}

.section {
  padding: 52px 0;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: 0;
}

.steps {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, 1fr);
}

.step,
.client-card {
  border-radius: 10px;
  padding: 24px;
}

.step-num {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #06131f;
  background: linear-gradient(135deg, var(--teal), var(--teal-2));
  font-weight: 900;
}

h3 {
  margin: 18px 0 10px;
  font-size: 1.25rem;
}

p,
li,
td {
  color: #c4d0e3;
  line-height: 1.75;
}

ul,
ol {
  padding-left: 1.25rem;
}

.table-card {
  border-radius: 10px;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 18px;
  border-bottom: 1px solid rgba(147, 178, 216, 0.16);
}

th {
  color: #dbe7fb;
  background: rgba(32, 47, 72, 0.8);
}

tr:last-child td {
  border-bottom: 0;
}

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

.client-card {
  min-height: 260px;
}

.client-card h3 {
  color: #f9fbff;
}

.model-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.model-list div {
  border: 1px solid rgba(20, 200, 180, 0.42);
  border-radius: 8px;
  padding: 18px;
  background: rgba(20, 200, 180, 0.08);
}

.model-list span,
.model-list strong {
  display: block;
}

.model-list strong {
  color: var(--teal-2);
  margin-top: 8px;
  font-size: 0.86rem;
}

.muted {
  margin-top: 18px;
  color: var(--muted);
}

.faq {
  display: grid;
  gap: 12px;
}

.faq details {
  border-radius: 8px;
  padding: 18px 20px;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.faq p {
  margin-bottom: 0;
}

.support {
  display: flex;
  align-items: center;
  gap: 22px;
  border-radius: 12px;
  padding: 28px;
  margin: 56px 0 72px;
}

.support img {
  width: 82px;
  height: 82px;
  border-radius: 18px;
  box-shadow: 0 0 42px rgba(57, 234, 216, 0.23);
}

.support h2 {
  margin: 0 0 8px;
}

.support p {
  margin: 0;
}

footer {
  border-top: 1px solid rgba(147, 178, 216, 0.12);
  padding: 28px 16px;
  display: flex;
  justify-content: center;
  gap: 16px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .nav {
    height: auto;
    padding: 14px 0;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 46px;
    gap: 28px;
  }

  .notice-grid,
  .steps,
  .client-grid,
  .model-list {
    grid-template-columns: 1fr;
  }

  .support {
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  main,
  .nav {
    width: min(100vw - 22px, 1160px);
  }

  .nav {
    display: block;
  }

  .nav-links {
    margin-top: 12px;
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 3.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  th,
  td {
    padding: 14px;
  }

  .support {
    display: block;
  }

  .support img {
    margin-bottom: 16px;
  }
}