:root {
  --bg: #07111f;
  --bg-soft: #0d1b2d;
  --panel: rgba(13, 27, 45, 0.9);
  --panel-strong: #10233b;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f4f7fb;
  --muted: rgba(244, 247, 251, 0.72);
  --green: #59d889;
  --green-soft: rgba(89, 216, 137, 0.14);
  --blue: #72b0ff;
  --blue-soft: rgba(114, 176, 255, 0.14);
  --amber: #ffcf63;
  --max: 1120px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(114, 176, 255, 0.18), transparent 36%),
    radial-gradient(circle at 20% 20%, rgba(89, 216, 137, 0.09), transparent 22%),
    linear-gradient(180deg, #07111f 0%, #091423 52%, #050b14 100%);
  font-family: "Noto Sans TC", "Inter", sans-serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, black, transparent 82%);
}

a {
  color: inherit;
}

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

.lang-en {
  display: none;
}

html[data-lang="en"] .lang-zh {
  display: none;
}

html[data-lang="en"] .lang-en {
  display: inline;
}

html[data-lang="zh"] .lang-zh {
  display: inline;
}

html[data-lang="zh"] .lang-en {
  display: none;
}

.lang-block {
  display: block;
}

html[data-lang="en"] .lang-block.lang-en {
  display: block;
}

html[data-lang="en"] .lang-block.lang-zh {
  display: none;
}

html[data-lang="zh"] .lang-block.lang-zh {
  display: block;
}

html[data-lang="zh"] .lang-block.lang-en {
  display: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(22px);
  background: rgba(7, 17, 31, 0.82);
  border-bottom: 1px solid var(--line);
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.nav-brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.nav-brand-title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.nav-brand-subtitle {
  font-size: 0.8rem;
  color: var(--muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
}

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

.lang-switch {
  display: inline-flex;
  padding: 4px;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  font: inherit;
  cursor: pointer;
}

.lang-switch button.is-active {
  background: var(--green);
  color: #051018;
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--green);
  color: #051018;
  box-shadow: 0 12px 28px rgba(89, 216, 137, 0.24);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
}

.btn-disabled {
  opacity: 0.56;
  cursor: not-allowed;
}

.page-shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 96px;
}

.hero {
  padding: 96px 0 56px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(89, 216, 137, 0.25);
  background: var(--green-soft);
  color: var(--green);
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: currentColor;
}

.hero h1,
.page-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.hero p,
.page-hero p,
.section-lead,
.card p,
.legal-body p,
.legal-body li,
.contact-card p {
  color: var(--muted);
}

.hero-actions,
.hero-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-actions {
  margin: 34px 0 28px;
}

.hero-meta {
  font-size: 0.95rem;
}

.hero-text {
  max-width: 690px;
}

.hero-note {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

.meta-chip {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
}

.hero-card,
.glass-panel,
.card,
.legal-card,
.contact-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  border-radius: 28px;
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -24% -24% auto;
  width: 240px;
  height: 240px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(114, 176, 255, 0.42), transparent 66%);
}

.mock-phone {
  position: relative;
  width: min(100%, 320px);
  margin: 0 auto;
  border-radius: 34px;
  padding: 14px;
  background: linear-gradient(180deg, #18283f, #0b1627);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.mock-phone::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 96px;
  height: 22px;
  border-radius: 999px;
  background: #05070b;
}

.mock-screen {
  min-height: 560px;
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgba(114, 176, 255, 0.15), transparent 36%),
    #0e192a;
  padding: 42px 18px 18px;
}

.mock-top,
.mock-row,
.security-list,
.download-row,
.footer-row,
.legal-grid,
.contact-grid {
  display: grid;
  gap: 16px;
}

.mock-top {
  grid-template-columns: 1fr 1fr;
  margin-bottom: 16px;
}

.mock-tile,
.mock-block {
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 14px;
}

.mock-tile strong,
.mock-block strong {
  display: block;
  font-size: 1.02rem;
}

.mock-tile span,
.mock-block span {
  color: rgba(244, 247, 251, 0.64);
  font-size: 0.82rem;
}

.mock-row {
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  margin-bottom: 12px;
}

.mock-row strong {
  font-size: 0.98rem;
}

.mock-row span {
  font-size: 0.82rem;
  color: rgba(244, 247, 251, 0.64);
}

.hero-shot {
  width: min(100%, 360px);
  margin: 0 auto;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.42);
}

.money-in {
  color: var(--green);
  font-weight: 700;
}

.money-out {
  color: #ffb5a6;
  font-weight: 700;
}

.section {
  padding: 34px 0;
}

.stats-strip {
  margin: 10px 0 22px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 22px 20px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}

.stat-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.4rem;
  letter-spacing: -0.03em;
}

.stat-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.section-header {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-kicker {
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.section h2,
.page-hero h2 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 3.4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  border-radius: 24px;
  padding: 24px;
}

.card h3,
.legal-card h3,
.contact-card h3 {
  margin: 0 0 10px;
  font-size: 1.16rem;
}

.card-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: var(--blue-soft);
  font-size: 1.35rem;
}

.split-highlight,
.download-panel,
.page-hero,
.legal-card,
.contact-card {
  border-radius: 28px;
  padding: 32px;
}

.split-highlight {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 24px;
  margin-top: 26px;
}

.security-list {
  grid-template-columns: 1fr 1fr;
}

.security-item {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.security-item strong {
  display: block;
  margin-bottom: 6px;
}

.download-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: center;
  margin-top: 22px;
}

.story-grid,
.comparison-grid,
.launch-grid,
.feature-showcase {
  display: grid;
  gap: 20px;
}

.story-grid {
  grid-template-columns: 1.1fr 0.9fr;
}

.story-panel,
.comparison-card,
.launch-card {
  border-radius: 24px;
  padding: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.story-panel h3,
.comparison-card h3,
.launch-card h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
}

.story-points,
.comparison-list,
.launch-list {
  display: grid;
  gap: 12px;
}

.story-point,
.comparison-item,
.launch-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.story-point strong,
.comparison-item strong,
.launch-item strong {
  display: block;
  margin-bottom: 6px;
}

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

.comparison-card.featured {
  background:
    radial-gradient(circle at top right, rgba(114, 176, 255, 0.15), transparent 34%),
    var(--panel);
  border-color: rgba(114, 176, 255, 0.24);
}

.comparison-tag {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  margin-bottom: 14px;
  font-size: 0.84rem;
  background: rgba(114, 176, 255, 0.14);
  color: var(--blue);
}

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

.feature-showcase {
  grid-template-columns: 1fr;
}

.feature-band {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border-radius: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.feature-band.reverse {
  grid-template-columns: 1.08fr 0.92fr;
}

.feature-media {
  display: flex;
  justify-content: center;
}

.feature-media img {
  width: min(100%, 340px);
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
}

.feature-copy h3 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  letter-spacing: -0.03em;
}

.feature-copy p {
  margin: 0 0 18px;
  color: var(--muted);
}

.feature-bullets {
  display: grid;
  gap: 12px;
}

.feature-bullet {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-bullet strong {
  display: block;
  margin-bottom: 5px;
}

.launch-card {
  min-height: 100%;
}

.launch-card p {
  color: var(--muted);
}

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

.download-card {
  padding: 22px;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.download-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.status-tag {
  display: inline-flex;
  margin-top: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 207, 99, 0.12);
  color: var(--amber);
  font-size: 0.86rem;
}

.page-hero {
  margin-top: 34px;
}

.page-hero p {
  max-width: 760px;
}

.legal-grid,
.contact-grid {
  grid-template-columns: 2fr 1fr;
  margin-top: 28px;
}

.legal-card h2,
.contact-card h2 {
  margin: 0 0 14px;
  font-size: 1.7rem;
}

.legal-body h3 {
  margin: 28px 0 10px;
  font-size: 1.08rem;
}

.legal-body ul {
  margin: 0;
  padding-left: 20px;
}

.legal-note {
  margin-top: 24px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(114, 176, 255, 0.08);
  border: 1px solid rgba(114, 176, 255, 0.14);
}

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

.aside-item {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.aside-item strong {
  display: block;
  margin-bottom: 5px;
  font-size: 0.96rem;
}

.contact-grid {
  align-items: start;
}

.contact-card a {
  color: var(--blue);
  text-decoration: none;
}

.contact-card a:hover {
  text-decoration: underline;
}

.footer {
  border-top: 1px solid var(--line);
  margin-top: 50px;
}

.footer-row {
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px 40px;
  grid-template-columns: 1fr auto auto;
  align-items: center;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

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

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

.footer-copy {
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  .hero,
  .split-highlight,
  .download-panel,
  .story-grid,
  .feature-band,
  .feature-band.reverse,
  .legal-grid,
  .contact-grid,
  .footer-row {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .stats-strip,
  .comparison-grid,
  .launch-grid,
  .security-list,
  .download-row {
    grid-template-columns: 1fr 1fr;
  }

  .nav {
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    padding-top: 4px;
  }
}

@media (max-width: 680px) {
  .card-grid,
  .stats-strip,
  .comparison-grid,
  .launch-grid,
  .security-list,
  .download-row,
  .mock-top {
    grid-template-columns: 1fr;
  }

  .page-shell {
    padding: 0 18px 72px;
  }

  .nav {
    padding: 14px 18px;
  }

  .hero {
    padding-top: 72px;
  }

  .hero-card,
  .split-highlight,
  .download-panel,
  .page-hero,
  .legal-card,
  .contact-card {
    padding: 22px;
  }

  .footer-row {
    padding: 24px 18px 34px;
  }
}