:root {
  --bg: #07111f;
  --bg-soft: #0d1a2d;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --text: #f7f3eb;
  --text-soft: #b8c1cf;
  --accent: #f0c98b;
  --accent-strong: #ffd79d;
  --link: #d7e6ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 18px 56px rgba(0, 0, 0, 0.16);
  --max-width: 1180px;
  --radius-xl: 36px;
  --radius-lg: 24px;
  --surface: rgba(255, 255, 255, 0.03);
  --section-gap: 44px;
  --hero-top-gap: 88px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at calc(12% + var(--pointer-x, 0px)) calc(8% + var(--pointer-y, 0px)),
      rgba(240, 201, 139, 0.2), transparent 28%),
    radial-gradient(circle at calc(86% - var(--pointer-x, 0px)) calc(10% - var(--pointer-y, 0px)),
      rgba(127, 163, 255, 0.16), transparent 24%),
    linear-gradient(180deg, #091321 0%, #0b1627 45%, #07111f 100%);
  color: var(--text);
  line-height: 1.72;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.62);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.topbar.is-scrolled {
  background: rgba(7, 17, 31, 0.84);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

.topbar-inner {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 76px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.28);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.brand-subtitle {
  font-size: 0.82rem;
  color: var(--text-soft);
}

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

.nav-link,
.lang-link,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  text-decoration: none;
  transition:
    transform 0.24s ease,
    background 0.24s ease,
    border-color 0.24s ease,
    box-shadow 0.24s ease;
}

.nav-link:hover,
.lang-link:hover,
.button-link:hover {
  transform: translateY(-1px);
  text-decoration: none;
  border-color: rgba(240, 201, 139, 0.45);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 28px rgba(6, 14, 24, 0.18);
}

.nav-link.is-active {
  border-color: rgba(240, 201, 139, 0.4);
  background: rgba(240, 201, 139, 0.12);
  color: var(--accent-strong);
}

.button-link.primary {
  background: linear-gradient(135deg, rgba(240, 201, 139, 0.22), rgba(255, 255, 255, 0.08));
  border-color: rgba(240, 201, 139, 0.36);
}

.hero {
  padding: var(--hero-top-gap) 0 72px;
}

.hero-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 56px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04)),
    rgba(8, 18, 31, 0.8);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  isolation: isolate;
  transition: transform 0.45s ease, box-shadow 0.45s ease;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 34%),
    radial-gradient(circle at 76% 24%, rgba(255, 255, 255, 0.08), transparent 24%);
  pointer-events: none;
  z-index: -1;
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: auto -8% -24% auto;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 201, 139, 0.18), transparent 68%);
  pointer-events: none;
  filter: blur(4px);
}

.hero-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.32);
}

.hero-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--accent-strong);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 900px;
  margin: 22px 0 18px;
  font-size: clamp(2.25rem, 5vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero p {
  max-width: 800px;
  margin: 0;
  color: var(--text-soft);
  font-size: 1.08rem;
}

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

.section {
  padding: var(--section-gap) 0;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.7rem, 2vw, 2.2rem);
  letter-spacing: -0.03em;
}

.section-copy {
  max-width: 760px;
  margin: 0 0 28px;
  color: var(--text-soft);
  font-size: 1.02rem;
}

.grid {
  display: grid;
  gap: 22px;
}

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

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

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-soft);
  transition:
    transform 0.28s ease,
    border-color 0.28s ease,
    background 0.28s ease,
    box-shadow 0.28s ease;
}

.card h3 {
  margin: 0 0 12px;
  font-size: 1.14rem;
}

.card p,
.card li {
  color: var(--text-soft);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(240, 201, 139, 0.18);
  background: rgba(255, 255, 255, 0.075);
  box-shadow: var(--shadow);
}

.card ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 14px;
  background: rgba(240, 201, 139, 0.12);
  color: var(--accent-strong);
  font-size: 1.2rem;
}

.faq-item + .faq-item {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.info-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.info-list li + li {
  margin-top: 16px;
}

.info-label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* Screenshots */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  align-items: end;
}

.phone-mockup {
  position: relative;
  border-radius: 28px;
  padding: 10px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.phone-mockup img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  background: #0a1422;
}

.phone-caption {
  margin-top: 12px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-soft);
}

.hero-phone {
  max-width: 280px;
  margin: 0 auto;
}

/* Trust row */
.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-soft);
  font-size: 0.92rem;
}

.trust-badge strong {
  color: var(--accent-strong);
  font-weight: 600;
}

/* App Store badge */
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 8px 20px 8px 16px;
  border-radius: 12px;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  text-decoration: none;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.store-badge:hover {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}

.store-badge svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.store-badge-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.store-badge-text small {
  font-size: 0.68rem;
  opacity: 0.85;
}

.store-badge-text span {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Feature row with image */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  margin-bottom: 48px;
}

.feature-row:nth-child(even) {
  direction: rtl;
}

.feature-row:nth-child(even) > * {
  direction: ltr;
}

.feature-row .phone-mockup {
  max-width: 300px;
  margin: 0 auto;
}

.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps li {
  position: relative;
  padding: 18px 18px 18px 64px;
  margin-bottom: 12px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-soft);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 18px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240, 201, 139, 0.16);
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 0.9rem;
}

.steps li strong {
  display: block;
  color: var(--text);
  margin-bottom: 4px;
}

/* Legal docs */
.legal-doc {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 0 24px;
}

.legal-doc .legal-meta {
  color: var(--text-soft);
  font-size: 0.92rem;
  margin-bottom: 32px;
}

.legal-doc h1 {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  letter-spacing: -0.03em;
}

.legal-doc h2 {
  margin: 36px 0 12px;
  font-size: 1.25rem;
  color: var(--accent-strong);
}

.legal-doc h3 {
  margin: 24px 0 8px;
  font-size: 1.05rem;
}

.legal-doc p,
.legal-doc li {
  color: var(--text-soft);
}

.legal-doc ul {
  padding-left: 22px;
}

.legal-doc a {
  color: var(--accent-strong);
}

/* Site footer */
.site-footer {
  padding: 64px 0 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-brand-copy {
  color: var(--text-soft);
  font-size: 0.92rem;
  max-width: 280px;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.footer-col a {
  display: block;
  color: var(--text-soft);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-soft);
  font-size: 0.88rem;
}

.cta-banner {
  padding: 40px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(240, 201, 139, 0.14), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(240, 201, 139, 0.22);
  text-align: center;
  margin: 24px 0 48px;
}

.cta-banner h2 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.cta-banner p {
  margin: 0 0 24px;
  color: var(--text-soft);
}

.cta-banner .hero-actions {
  justify-content: center;
  margin-top: 0;
}

.footer {
  padding: 72px 0 72px;
  color: var(--text-soft);
}

.footer-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 28px 30px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.small-note {
  font-size: 0.92rem;
  color: var(--text-soft);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Keep above-the-fold hero readable before JS runs */
.hero .reveal,
.legal-doc.reveal {
  opacity: 1;
  transform: none;
}

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

  .reveal,
  .reveal.in-view,
  .card,
  .hero-card,
  .nav-link,
  .lang-link,
  .button-link,
  .store-badge {
    transition: none;
    transform: none;
    opacity: 1;
  }
}

@media (max-width: 1000px) {
  .hero-split,
  .feature-row,
  .feature-row:nth-child(even) {
    grid-template-columns: 1fr;
    direction: ltr;
  }

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

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

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

@media (max-width: 900px) {
  .grid.three,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .hero-card {
    padding: 36px 30px;
  }
}

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

  .topbar-inner {
    padding: 10px 0;
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding-top: 52px;
    padding-bottom: 44px;
  }

  .hero-card {
    padding: 24px;
  }

  .section {
    padding: 30px 0;
  }

  .screenshot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

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

  .cta-banner {
    padding: 28px 20px;
  }

  .footer {
    padding-top: 48px;
  }
}