:root {
  --bg: #f8fbff;
  --surface: #ffffff;
  --surface-soft: #f1f4ff;
  --ink: #2a2b2e;
  --ink-strong: #1d1f2a;
  --muted: #85899e;
  --muted-strong: #585c6f;
  --line: #e4e7f3;
  --line-soft: #eef1f8;
  --brand: #4d71ff;
  --brand-deep: #3d5be0;
  --violet: #816ff1;
  --violet-soft: #6663f7;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 8px 24px rgba(42, 47, 69, 0.06);
  --shadow-md: 0 18px 48px rgba(61, 91, 224, 0.10);
  --shadow-lg: 0 30px 80px rgba(61, 91, 224, 0.16);
  --container: 1180px;
  --font: "PingFang SC", "PingFangSC-Regular", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font: inherit;
}

h1, h2, h3, h4, p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 251, 255, 0.88);
  border-bottom: 1px solid rgba(228, 231, 243, 0.72);
  backdrop-filter: blur(18px);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 28px rgba(42, 47, 69, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 34px;
  height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--ink-strong);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: 8px;
}

.main-nav a {
  position: relative;
  font-size: 14px;
  color: var(--muted-strong);
  padding: 8px 0;
  transition: color 0.2s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--violet-soft), var(--brand));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s ease;
}

.main-nav a:hover {
  color: var(--ink-strong);
}

.main-nav a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.header-link {
  font-size: 14px;
  color: var(--muted-strong);
  transition: color 0.2s ease;
}

.header-link:hover {
  color: var(--brand-deep);
}

.header-login {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  color: var(--ink-strong);
  font-weight: 600;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
  padding: 10px 9px;
  flex-direction: column;
  justify-content: space-between;
}

.menu-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 84px;
  background:
    radial-gradient(720px 420px at 84% 14%, rgba(129, 111, 241, 0.14), transparent 68%),
    radial-gradient(560px 380px at 8% 82%, rgba(77, 113, 255, 0.10), transparent 72%),
    var(--bg);
}

.hero-bg {
  position: absolute;
  right: -120px;
  top: 24px;
  width: 780px;
  max-width: 62vw;
  opacity: 0.42;
  pointer-events: none;
  filter: saturate(1.05);
}

.hero-bg img {
  width: 100%;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  align-items: center;
  gap: 66px;
}

.hero-copy {
  max-width: 580px;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--brand-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
  box-shadow: 0 0 0 5px rgba(102, 99, 247, 0.12);
}

.hero h1 {
  margin-top: 18px;
  font-size: clamp(40px, 4.5vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.035em;
  color: var(--ink-strong);
  font-weight: 800;
}

.hero-lead {
  margin-top: 24px;
  max-width: 560px;
  font-size: 18px;
  line-height: 1.85;
  color: var(--muted-strong);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 50px;
  padding: 0 26px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--violet-soft) 0%, var(--violet) 48%, var(--brand) 100%);
  box-shadow: 0 16px 36px rgba(102, 99, 247, 0.30);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 42px rgba(102, 99, 247, 0.36);
}

.btn-ghost {
  color: var(--ink-strong);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  box-shadow: 0 8px 20px rgba(42, 47, 69, 0.04);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: #c9d2ef;
  box-shadow: 0 12px 26px rgba(42, 47, 69, 0.08);
}

.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--muted);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

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

.hero-trust strong {
  display: inline-block;
  margin-right: 7px;
  color: var(--ink-strong);
  font-size: 14px;
}

/* Hero app mockup */
.hero-visual {
  position: relative;
  min-width: 0;
}

.app-window {
  position: relative;
  z-index: 2;
  background: var(--surface);
  border: 1px solid rgba(228, 231, 243, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.app-topbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: linear-gradient(180deg, #fbfcff, #f6f8ff);
  border-bottom: 1px solid var(--line-soft);
}

.app-dots {
  display: flex;
  gap: 5px;
  flex-shrink: 0;
}

.app-dots i,
.demo-dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #d8dcec;
}

.app-dots i:first-child { background: #ffb3ad; }
.app-dots i:nth-child(2) { background: #ffd59a; }
.app-dots i:nth-child(3) { background: #a8dfc1; }

.app-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow: auto;
  scrollbar-width: none;
}

.app-tabs::-webkit-scrollbar {
  display: none;
}

.demo-tab {
  flex-shrink: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.demo-tab:hover {
  color: var(--ink-strong);
  background: #eef2ff;
}

.demo-tab.is-active {
  color: var(--brand-deep);
  background: #e9edff;
  font-weight: 700;
}

.app-badge {
  margin-left: auto;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 24px;
  padding: 0 8px;
  border-radius: 7px;
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
}

.app-body {
  padding: 18px;
  background:
    radial-gradient(360px 200px at 100% 0%, rgba(129, 111, 241, 0.08), transparent 70%),
    #fff;
}

.lang-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.lang-chip {
  display: inline-flex;
  align-items: center;
  height: 30px;
  padding: 0 12px;
  border-radius: 8px;
  background: #f2f5ff;
  color: var(--ink-strong);
  font-size: 12px;
  font-weight: 600;
}

.swap-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--muted-strong);
  cursor: pointer;
}

.lang-spacer {
  flex: 1;
}

.lang-auto {
  font-size: 11px;
  color: var(--muted);
}

.translation-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.panel {
  min-height: 154px;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.panel-source {
  background: #fbfcff;
}

.panel-target {
  background: linear-gradient(160deg, #f4f4ff, #f2f7ff);
  border-color: #e3e7ff;
}

.panel-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.panel p {
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--ink-strong);
}

.panel-target p {
  color: #3d4570;
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.app-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tool {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--muted);
}

.tool img {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.app-send {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  padding: 0 18px;
  border-radius: 9px;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
  box-shadow: 0 8px 18px rgba(77, 113, 255, 0.24);
}

.floating-card {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 13px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 13px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.floating-card strong {
  display: block;
  font-size: 12px;
  color: var(--ink-strong);
  line-height: 1.3;
}

.floating-card span {
  display: block;
  font-size: 10px;
  color: var(--muted);
}

.floating-card .float-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: #f0f3ff;
}

.floating-card-a {
  left: -26px;
  bottom: 64px;
}

.floating-card-b {
  right: -20px;
  top: 44px;
}

/* Sections */
.section {
  padding: 92px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-head h2,
.aibox-copy h2,
.faq-copy h2,
.final-cta h2 {
  margin-top: 12px;
  font-size: clamp(30px, 3.2vw, 42px);
  line-height: 1.22;
  letter-spacing: -0.03em;
  color: var(--ink-strong);
  font-weight: 800;
}

.section-lead {
  margin-top: 16px;
  max-width: 680px;
  color: var(--muted-strong);
  font-size: 16px;
  line-height: 1.85;
}

/* Features */
.features {
  background: #fff;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fff, #fbfcff);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: auto -40% -70% 30%;
  height: 150px;
  background: radial-gradient(closest-side, rgba(129, 111, 241, 0.10), transparent);
  pointer-events: none;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: #d8dff7;
  box-shadow: var(--shadow-md);
}

.feature-card-accent {
  background: linear-gradient(150deg, #f5f3ff, #eef4ff 70%, #ffffff);
  border-color: #dfe3ff;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 13px;
  background: #f0f3ff;
  border: 1px solid #e6eaff;
  margin-bottom: 18px;
}

.feature-icon img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.feature-card h3 {
  font-size: 19px;
  color: var(--ink-strong);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin-top: 10px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.8;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.tags span {
  padding: 4px 9px;
  border-radius: 6px;
  background: #f2f5ff;
  color: #5a6490;
  font-size: 11px;
  font-weight: 600;
}

/* Scenarios */
.scenarios {
  background:
    radial-gradient(600px 340px at 90% 10%, rgba(77, 113, 255, 0.08), transparent 70%),
    var(--bg);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.scenario-card {
  padding: 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.scenario-card-dark {
  background: linear-gradient(155deg, #252946, #303764 58%, #3b3f7a);
  border-color: #303764;
  color: #fff;
}

.scenario-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
}

.scenario-index {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.scenario-card-dark .scenario-index {
  color: rgba(255, 255, 255, 0.55);
}

.scenario-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: #f1f4ff;
}

.scenario-card-dark .scenario-icon {
  background: rgba(255, 255, 255, 0.12);
}

.scenario-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.scenario-card h3 {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
}

.scenario-card-dark h3 {
  color: #fff;
}

.scenario-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-strong);
}

.scenario-card-dark p {
  color: rgba(255, 255, 255, 0.72);
}

.scenario-card ul {
  display: grid;
  gap: 9px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.scenario-card-dark ul {
  border-top-color: rgba(255, 255, 255, 0.14);
}

.scenario-card li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--muted-strong);
}

.scenario-card-dark li {
  color: rgba(255, 255, 255, 0.78);
}

.scenario-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
}

/* AIBox */
.aibox {
  background: #fff;
}

.aibox-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  align-items: center;
  gap: 60px;
}

.check-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  font-size: 14px;
  color: var(--muted-strong);
  line-height: 1.7;
}

.check-list li span {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
  position: relative;
}

.check-list li span::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  width: 5px;
  height: 8px;
  border: solid #fff;
  border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 26px;
  color: var(--brand-deep);
  font-size: 14px;
  font-weight: 700;
}

.text-link:hover {
  gap: 11px;
}

.aibox-demo {
  padding: 24px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(300px 200px at 100% 0%, rgba(129, 111, 241, 0.18), transparent 70%),
    linear-gradient(160deg, #f3f2ff, #eef5ff 55%, #fbfcff);
  border: 1px solid #e1e5ff;
  box-shadow: var(--shadow-md);
}

.demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.demo-pill {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 11px;
  border-radius: 8px;
  background: #fff;
  color: var(--violet-soft);
  font-size: 11px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(102, 99, 247, 0.12);
}

.demo-dots {
  display: flex;
  gap: 4px;
}

.demo-block {
  padding: 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 8px 20px rgba(61, 91, 224, 0.06);
}

.demo-block-result {
  background: #fff;
  border-color: #e3e7ff;
}

.demo-label {
  display: inline-block;
  margin-bottom: 7px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.demo-block p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-strong);
}

.demo-arrow {
  display: flex;
  justify-content: center;
  padding: 7px 0;
  color: var(--violet);
}

.demo-meta {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.demo-meta span {
  padding: 5px 9px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--muted-strong);
  font-size: 10px;
  font-weight: 600;
}

/* Platforms */
.platforms {
  background:
    radial-gradient(520px 300px at 14% 12%, rgba(102, 99, 247, 0.08), transparent 70%),
    var(--bg);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.platform-card {
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.platform-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.platform-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: #f1f4ff;
  margin-bottom: 16px;
}

.platform-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.platform-card h3 {
  font-size: 17px;
  color: var(--ink-strong);
  font-weight: 700;
}

.platform-card p {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted-strong);
}

/* FAQ */
.faq {
  background: #fff;
}

.faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 64px;
  align-items: start;
}

.faq-copy {
  position: sticky;
  top: 112px;
}

.faq-contact {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 30px;
  padding: 16px;
  border-radius: 13px;
  background: #f6f8ff;
  border: 1px solid var(--line);
}

.faq-contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
  background: #fff;
}

.faq-contact p {
  font-size: 13px;
  color: var(--muted-strong);
  line-height: 1.7;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  position: relative;
  padding: 21px 40px 21px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-strong);
}

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

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 50%;
  width: 9px;
  height: 9px;
  border: solid var(--muted);
  border-width: 0 2px 2px 0;
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.24s ease;
}

.faq-item[open] summary::after {
  transform: translateY(-20%) rotate(-135deg);
}

.faq-item p {
  padding: 0 40px 22px 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted-strong);
}

/* Final CTA */
.final-cta {
  padding: 0 0 84px;
  background: #fff;
}

.final-cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 52px 54px;
  border-radius: 24px;
  overflow: hidden;
  background:
    radial-gradient(420px 260px at 86% 0%, rgba(255, 255, 255, 0.22), transparent 70%),
    linear-gradient(135deg, #5d5df6 0%, #7568f3 48%, #4d71ff 100%);
  box-shadow: 0 26px 64px rgba(77, 113, 255, 0.28);
}

.final-cta-inner::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.final-cta .section-kicker {
  color: rgba(255, 255, 255, 0.78);
}

.final-cta h2 {
  color: #fff;
  max-width: 700px;
}

.final-cta p {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
}

.btn-light {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  color: var(--brand-deep);
  background: #fff;
  box-shadow: 0 14px 30px rgba(30, 41, 90, 0.18);
}

.btn-light:hover {
  transform: translateY(-2px);
}

/* Footer */
.site-footer {
  background: #f4f7ff;
  border-top: 1px solid var(--line);
  padding: 56px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
}

.footer-brand p {
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
}

.footer-col h4 {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-strong);
}

.footer-col a {
  display: block;
  margin-bottom: 9px;
  font-size: 13px;
  color: var(--muted-strong);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--brand-deep);
}

/* The renderer may append a generic info-link strip; the theme provides its own footer links. */
.nx-footer-info-links-wrap {
  display: none !important;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 42px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

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

/* Info pages */
.page-main {
  padding: 64px 0 88px;
  background:
    radial-gradient(620px 340px at 88% 0%, rgba(129, 111, 241, 0.10), transparent 70%),
    var(--bg);
}

.page-hero {
  max-width: 820px;
  margin-bottom: 42px;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--brand-deep);
  font-weight: 600;
}

.page-title {
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--ink-strong);
  font-weight: 800;
}

.page-lead {
  margin-top: 16px;
  max-width: 760px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--muted-strong);
}

.prose {
  max-width: 880px;
  padding: 34px 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.prose h2 {
  margin: 30px 0 10px;
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--ink-strong);
  font-weight: 700;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted-strong);
}

.prose ul {
  display: grid;
  gap: 9px;
  margin: 8px 0 16px;
}

.prose li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted-strong);
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--violet-soft), var(--brand));
}

.prose a {
  color: var(--brand-deep);
  font-weight: 600;
}

.page-faq-list {
  margin-top: 6px;
  border-top: 1px solid var(--line);
}

.page-faq-list .faq-item p,
.page-faq-list .faq-item ul {
  padding-left: 0;
}

.page-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-cta-row .btn {
  min-height: 46px;
  padding: 0 20px;
  font-size: 14px;
}

@media (max-width: 620px) {
  .page-main {
    padding: 42px 0 64px;
  }

  .prose {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .page-title {
    font-size: 32px;
  }

  .page-lead {
    font-size: 16px;
  }
}

/* Responsive */
@media (max-width: 1080px) {
  .hero-grid {
    gap: 40px;
  }

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

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

  .aibox-grid,
  .faq-grid {
    gap: 40px;
  }

  .floating-card-a {
    left: -10px;
  }

  .floating-card-b {
    right: -8px;
  }
}

@media (max-width: 860px) {
  .main-nav {
    position: absolute;
    left: 24px;
    right: 24px;
    top: 68px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-md);
  }

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

  .main-nav a {
    padding: 12px 14px;
    border-radius: 9px;
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav a:hover {
    background: #f4f7ff;
  }

  .menu-toggle {
    display: flex;
  }

  .header-link:not(.header-login) {
    display: none;
  }

  .header-login {
    border-left: 0;
    padding-left: 0;
  }

  .hero {
    padding: 54px 0 68px;
  }

  .hero-grid,
  .aibox-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 640px;
  }

  .hero-visual {
    max-width: 620px;
    width: 100%;
    margin: 16px auto 0;
  }

  .faq-copy {
    position: static;
  }

  .faq-contact {
    max-width: 520px;
  }

  .final-cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 34px;
  }

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

@media (max-width: 620px) {
  .container {
    width: min(var(--container), calc(100% - 32px));
  }

  .header-inner {
    height: 62px;
    gap: 16px;
  }

  .main-nav {
    top: 62px;
    left: 16px;
    right: 16px;
  }

  .brand-name {
    font-size: 17px;
  }

  .hero h1 {
    font-size: 36px;
    line-height: 1.18;
  }

  .hero-lead {
    font-size: 16px;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .hero-trust {
    gap: 10px 18px;
  }

  .section {
    padding: 68px 0;
  }

  .section-head {
    margin-bottom: 30px;
  }

  .section-head h2,
  .aibox-copy h2,
  .faq-copy h2,
  .final-cta h2 {
    font-size: 29px;
  }

  .feature-grid,
  .scenario-grid,
  .platform-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .scenario-card {
    padding: 22px;
  }

  .app-topbar {
    gap: 8px;
  }

  .app-dots {
    display: none;
  }

  .translation-panels {
    grid-template-columns: 1fr;
  }

  .panel {
    min-height: 118px;
  }

  .floating-card {
    display: none;
  }

  .aibox-demo {
    padding: 18px;
  }

  .final-cta-inner {
    padding: 32px 22px;
    border-radius: 18px;
  }

  .final-cta-inner .btn {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}