:root {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --faint: rgba(255, 255, 255, 0.6);
  --stroke: rgba(255, 255, 255, 0.14);
  --brand: #6ee7ff;
  --brand-2: #a78bfa;
  --ok: #34d399;
  --shadow: 0 20px 70px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC",
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 700px at 15% 10%, rgba(110, 231, 255, 0.18), transparent 55%),
    radial-gradient(900px 600px at 85% 20%, rgba(167, 139, 250, 0.2), transparent 55%),
    radial-gradient(900px 700px at 50% 95%, rgba(52, 211, 153, 0.13), transparent 55%),
    var(--bg);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

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

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid var(--stroke);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
  z-index: 9999;
}
.skip-link:focus {
  transform: translateY(0);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10, 16, 30, 0.58);
  border-bottom: 1px solid var(--stroke);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.35), rgba(167, 139, 250, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  flex: 0 0 auto;
}

.brand-text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.brand-name {
  font-weight: 750;
  letter-spacing: 0.2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-sub {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  display: none;
  appearance: none;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
}

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

.nav-link {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--muted);
  border: 1px solid transparent;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
  text-decoration: none;
  color: var(--text);
}

.nav-link.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

/* Hero */
.hero {
  padding: 52px 0 28px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 22px;
  align-items: stretch;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  margin: 0 0 14px 0;
}

.hero-title {
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.16;
  margin: 0 0 14px 0;
  letter-spacing: -0.4px;
}

.hero-desc {
  margin: 0 0 18px 0;
  color: var(--muted);
  font-size: 15px;
  max-width: 56ch;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  font-weight: 650;
  letter-spacing: 0.2px;
  min-width: 120px;
}
.btn:hover {
  text-decoration: none;
  background: rgba(255, 255, 255, 0.1);
}

.btn.primary {
  border-color: rgba(110, 231, 255, 0.45);
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.2), rgba(167, 139, 250, 0.16));
}

.btn.primary:hover {
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.26), rgba(167, 139, 250, 0.2));
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.05);
}

.hero-meta {
  display: flex;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
  flex-wrap: wrap;
  color: var(--faint);
  font-size: 13px;
}

.hero-meta li {
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
}

.hero-card {
  display: grid;
  place-items: stretch;
}

.hero-figure {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.card {
  height: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.05));
  box-shadow: var(--shadow);
  padding: 18px;
}

.card-title {
  font-weight: 750;
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}

.card-list {
  display: grid;
  gap: 12px;
}

.card-item {
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.12);
}

.card-k {
  font-weight: 700;
}

.card-v {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.card-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--brand);
  font-weight: 650;
}
.card-link:hover {
  text-decoration: none;
  opacity: 0.92;
}

/* Sections */
.section {
  padding: 42px 0;
}

.section-muted {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.section-title {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.2px;
}

.section-desc {
  margin: 0;
  color: var(--muted);
}

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

.feature {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  padding: 18px;
}

.feature-media {
  margin: 0 0 12px 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
}
.feature-media img {
  display: block;
  width: 100%;
  height: auto;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.gallery-item {
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
}
.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
}
.gallery-item .cap {
  padding: 12px 12px 14px;
  color: var(--muted);
  font-size: 13px;
}

.feature-title {
  margin: 0 0 8px 0;
  font-size: 16px;
}

.feature-desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

/* Steps */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
}

.step-no {
  display: grid;
  place-items: center;
  border-radius: 16px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.85);
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.16), rgba(167, 139, 250, 0.14));
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.step-title {
  font-weight: 750;
}

.step-desc {
  color: var(--muted);
  font-size: 14px;
  margin-top: 4px;
}

/* CTA */
.cta-banner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(135deg, rgba(110, 231, 255, 0.1), rgba(167, 139, 250, 0.08));
}

.cta-title {
  margin: 0 0 4px 0;
  font-size: 18px;
}

.cta-desc {
  margin: 0;
  color: var(--muted);
}

.cta-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Footer */
.site-footer {
  padding: 28px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
}

.footer-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.4fr 0.9fr 0.9fr;
}

.footer-title {
  font-weight: 800;
  margin-bottom: 10px;
}

.footer-text {
  color: var(--muted);
  font-size: 13px;
  margin: 6px 0;
}

.footer-links {
  display: grid;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--text);
  text-decoration: none;
}

/* Inner pages */
.page-hero {
  padding: 40px 0 18px;
}

.page-banner {
  margin-top: 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
}
.page-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.page-title {
  margin: 0 0 8px 0;
  font-size: 30px;
  letter-spacing: -0.3px;
}

.page-subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 72ch;
}

.page {
  padding: 20px 0 46px;
}

.panel {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  padding: 18px;
}

.panel + .panel {
  margin-top: 14px;
}

.panel h3 {
  margin: 0 0 10px 0;
}

.panel p {
  margin: 8px 0;
  color: var(--muted);
}

.panel ul {
  margin: 8px 0 0 0;
  color: var(--muted);
  padding-left: 18px;
}

.notice {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(52, 211, 153, 0.35);
  background: rgba(52, 211, 153, 0.08);
  color: rgba(255, 255, 255, 0.86);
}

.notice b {
  color: rgba(255, 255, 255, 0.94);
}

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

.kvs {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}
.kv {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.12);
}
.kv .k {
  color: rgba(255, 255, 255, 0.86);
  font-weight: 700;
}
.kv .v {
  color: var(--muted);
}

.form {
  display: grid;
  gap: 12px;
  margin-top: 10px;
}
.field {
  display: grid;
  gap: 6px;
}
.label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
  font-weight: 650;
}
.input,
.textarea {
  width: 100%;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
  outline: none;
}
.input:focus,
.textarea:focus {
  border-color: rgba(110, 231, 255, 0.45);
  box-shadow: 0 0 0 3px rgba(110, 231, 255, 0.12);
}
.textarea {
  min-height: 120px;
  resize: vertical;
}
.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--muted);
  font-size: 13px;
}
.check input {
  margin-top: 3px;
}
.small {
  font-size: 12px;
  color: var(--muted);
}

/* Mobile */
@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    right: 20px;
    top: 66px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    min-width: 200px;
    padding: 10px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(10, 16, 30, 0.92);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
  }

  .cta-banner {
    flex-direction: column;
    align-items: stretch;
  }

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