:root {
  --bg: #0b1220;
  --bg-2: #070b14;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.14);
  --text: #eaf0ff;
  --muted: rgba(234, 240, 255, 0.72);
  --faint: rgba(234, 240, 255, 0.54);
  --primary: #6d7dff;
  --primary-2: #25d5ff;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --container: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% -10%, rgba(109, 125, 255, 0.25), transparent 60%),
    radial-gradient(1000px 600px at 90% 20%, rgba(37, 213, 255, 0.18), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  min-height: 100vh;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

section {
  scroll-margin-top: 92px;
}

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

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

.fineprint {
  margin-top: 18px;
  color: var(--faint);
  font-size: 13px;
  line-height: 1.6;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
  text-decoration: none;
  transform: translateY(-140%);
  transition: transform 200ms ease;
  z-index: 100;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 18, 32, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-logo {
  width: 32px;
  height: 32px;
}

.brand-name {
  font-weight: 760;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 650;
  padding: 10px 10px;
  border-radius: 12px;
  transition: background 180ms ease, color 180ms ease;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.site-nav a:focus-visible {
  outline: 2px solid rgba(37, 213, 255, 0.8);
  outline-offset: 3px;
}

.nav-cta {
  color: #06101a;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 14px 30px rgba(109, 125, 255, 0.18);
}

.nav-cta:hover {
  color: #041017;
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.9), rgba(37, 213, 255, 0.9));
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.nav-toggle-lines {
  width: 18px;
  height: 2px;
  position: relative;
  display: block;
  border-radius: 2px;
  background: currentColor;
  transition: background 160ms ease;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 160ms ease;
}

.nav-toggle-lines::before {
  top: -6px;
}

.nav-toggle-lines::after {
  top: 6px;
}

body.nav-open .nav-toggle-lines {
  background: transparent;
}

body.nav-open .nav-toggle-lines::before {
  transform: translateY(6px) rotate(45deg);
}

body.nav-open .nav-toggle-lines::after {
  transform: translateY(-6px) rotate(-45deg);
}
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 46px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -140px -240px;
  background: url("../img/grid.svg") center -80px / 980px auto no-repeat;
  opacity: 0.18;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: -220px -220px;
  background: radial-gradient(520px 320px at 35% 15%, rgba(109, 125, 255, 0.32), transparent 65%),
    radial-gradient(520px 320px at 70% 30%, rgba(37, 213, 255, 0.22), transparent 65%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 34px;
  align-items: center;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(234, 240, 255, 0.82);
  margin: 0;
}

.hero-copy h1 {
  margin: 14px 0 10px;
  font-size: clamp(34px, 4vw, 54px);
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.hero-subtitle {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 22px 0 0;
}

.hero-metrics > div {
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
}

.hero-metrics dt {
  color: rgba(234, 240, 255, 0.82);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.hero-metrics dd {
  margin: 6px 0 0;
  color: rgba(234, 240, 255, 0.72);
  font-size: 13px;
  line-height: 1.4;
}

.hero-art {
  display: grid;
  place-items: center;
}

.hero-art img {
  width: min(520px, 100%);
  filter: drop-shadow(0 38px 80px rgba(0, 0, 0, 0.45));
}

.section {
  padding: 74px 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.section-head h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 2.8vw, 36px);
  letter-spacing: -0.01em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  max-width: 76ch;
}

.grid {
  display: grid;
  gap: 16px;
}

.cards-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: rgba(234, 240, 255, 0.88);
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.16), rgba(37, 213, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.card-icon svg {
  width: 22px;
  height: 22px;
}

.card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.table-wrap {
  overflow: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

.table th,
.table td {
  text-align: left;
  padding: 14px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(234, 240, 255, 0.86);
  font-size: 14px;
}

.table th {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(234, 240, 255, 0.72);
  text-transform: uppercase;
}

.table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.04);
}

.callout {
  margin-top: 18px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.18), rgba(37, 213, 255, 0.09));
  padding: 18px;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.callout h3 {
  margin: 0 0 6px;
}

.callout p {
  margin: 0;
  color: rgba(234, 240, 255, 0.78);
  line-height: 1.7;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  padding: 18px;
}

.step-num {
  font-weight: 820;
  letter-spacing: 0.08em;
  color: rgba(37, 213, 255, 0.9);
}

.step h3 {
  margin: 10px 0 8px;
}

.step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.price-card {
  position: relative;
}

.price-sub {
  margin: 6px 0 14px;
  color: rgba(234, 240, 255, 0.7);
}

.badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(37, 213, 255, 0.14);
  border: 1px solid rgba(37, 213, 255, 0.28);
  color: rgba(234, 240, 255, 0.92);
}

.featured {
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.16), rgba(37, 213, 255, 0.08));
  border-color: rgba(37, 213, 255, 0.26);
}

.list {
  margin: 0;
  padding-left: 18px;
  color: rgba(234, 240, 255, 0.78);
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  text-decoration: none;
  font-weight: 720;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  transition: transform 120ms ease, background 180ms ease, border-color 180ms ease;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.09);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 2px solid rgba(37, 213, 255, 0.8);
  outline-offset: 3px;
}

.btn-primary {
  border-color: rgba(37, 213, 255, 0.4);
  color: #051018;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
}

.btn-primary:hover {
  background: linear-gradient(135deg, rgba(109, 125, 255, 0.92), rgba(37, 213, 255, 0.92));
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
}

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

.faq-item {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-weight: 720;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-chev {
  width: 10px;
  height: 10px;
  border-right: 2px solid rgba(234, 240, 255, 0.75);
  border-bottom: 2px solid rgba(234, 240, 255, 0.75);
  transform: rotate(45deg);
  transition: transform 160ms ease;
}

.faq-item[open] .faq-chev {
  transform: rotate(-135deg);
}

.faq-body {
  padding: 0 18px 16px;
  color: var(--muted);
  line-height: 1.7;
}

.contact {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  align-items: start;
}

.form {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  padding: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 8px;
  font-weight: 650;
  color: rgba(234, 240, 255, 0.85);
}

input,
textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(11, 18, 32, 0.5);
  color: var(--text);
  padding: 12px 12px;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: rgba(234, 240, 255, 0.45);
}

input:focus,
textarea:focus {
  border-color: rgba(37, 213, 255, 0.46);
  box-shadow: 0 0 0 4px rgba(37, 213, 255, 0.12);
}

.form-actions {
  margin-top: 12px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-side .card {
  padding: 18px;
}

.contact-kv {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 14px 0 16px;
}

.kv-k {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(234, 240, 255, 0.6);
}

.kv-v {
  font-weight: 720;
}

.site-footer {
  padding: 34px 0 44px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.12);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-meta {
  display: grid;
  gap: 6px;
  text-align: right;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(11, 18, 32, 0.8);
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  color: rgba(234, 240, 255, 0.9);
  max-width: min(520px, calc(100% - 24px));
}

.noscript {
  margin: 14px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 980px) {
  .cards-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 72px;
    display: grid;
    gap: 6px;
    padding: 12px 20px 16px;
    background: rgba(11, 18, 32, 0.86);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 160ms ease, transform 160ms ease;
  }

  body.nav-open .site-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-cta {
    text-align: center;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-meta {
    text-align: left;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(var(--container), calc(100% - 28px));
  }

  .cards-3,
  .cards-2 {
    grid-template-columns: 1fr;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
    animation: none !important;
  }
}