/* Mobile-first responsive website for XXX Wallet */
:root {
  --primary: rgb(70,139,223);
  --primary-dark: #2562a8;
  --primary-soft: #eaf4ff;
  --ink: #102033;
  --muted: #617084;
  --line: #d9e6f6;
  --card: rgba(255,255,255,.88);
  --bg: #f6faff;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(31, 90, 158, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(70,139,223,.14), transparent 28rem),
    linear-gradient(180deg, #ffffff 0%, #f6faff 46%, #ffffff 100%);
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding-left: 1.2rem; }
li + li { margin-top: .45rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(217,230,246,.8);
}
.header-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand, .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.logo {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  box-shadow: 0 10px 24px rgba(70,139,223,.18);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1rem; letter-spacing: .02em; }
.brand-text small { color: var(--muted); font-size: .72rem; }

.nav-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  display: grid;
  place-content: center;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background: var(--ink);
}
.site-nav {
  position: absolute;
  top: 72px;
  left: 16px;
  right: 16px;
  display: none;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,.96);
  box-shadow: var(--shadow);
}
.site-nav.is-open { display: flex; }
.site-nav a {
  padding: 10px 12px;
  border-radius: 12px;
  color: #425267;
  font-size: .94rem;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--primary-dark);
  background: var(--primary-soft);
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 58px 0;
}
.section-tight { padding: 34px 0; }
.section-title {
  max-width: 760px;
  margin-bottom: 28px;
}
.eyebrow, .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-dark);
  background: rgba(70,139,223,.10);
  border: 1px solid rgba(70,139,223,.18);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.section-title h2,
.page-hero h1,
.hero-copy h1 {
  line-height: 1.14;
  letter-spacing: -.045em;
}
.section-title h2 {
  margin: 14px 0 10px;
  font-size: clamp(2rem, 7vw, 3.25rem);
}
.section-title p { color: var(--muted); font-size: 1.02rem; }

.hero-layout {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 0 42px;
  display: grid;
  gap: 34px;
  align-items: center;
}
.hero-copy h1 {
  margin: 14px 0 18px;
  font-size: clamp(2.4rem, 12vw, 5.8rem);
}
.hero-copy .lead {
  color: #52657c;
  font-size: 1.08rem;
  max-width: 680px;
}
.keyword-line {
  margin-top: 16px;
  color: var(--muted);
  font-size: .94rem;
}
.tag-row, .status-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0;
}
.tag-row span, .status-tags span, .pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: #3f526a;
  padding: 8px 12px;
  font-size: .86rem;
  box-shadow: 0 8px 20px rgba(31,90,158,.06);
}
.download-btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  letter-spacing: .03em;
  border: 1px solid rgba(70,139,223,.18);
  box-shadow: 0 14px 28px rgba(70,139,223,.25);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.download-btn:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
  box-shadow: 0 18px 36px rgba(70,139,223,.32);
}

.product-visual {
  position: relative;
  border-radius: 32px;
  padding: 22px;
  min-height: 420px;
  background:
    linear-gradient(145deg, rgba(70,139,223,.18), rgba(255,255,255,.78)),
    radial-gradient(circle at 90% 10%, rgba(70,139,223,.24), transparent 14rem);
  border: 1px solid rgba(70,139,223,.20);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.app-frame {
  width: min(310px, 78%);
  margin: 28px auto 0;
  border-radius: 34px;
  background: #fff;
  padding: 12px;
  box-shadow: 0 24px 60px rgba(25,68,122,.18);
}
.app-frame img {
  border-radius: 26px;
}
.float-card, .status-card {
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(217,230,246,.9);
  border-radius: 18px;
  padding: 14px;
  box-shadow: 0 14px 34px rgba(31,90,158,.10);
}
.float-card {
  position: relative;
  margin-top: 12px;
}
.float-card strong, .status-card strong { display: block; font-size: .92rem; }
.float-card small, .status-card small { color: var(--muted); }

.overview-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.metric-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 14px 36px rgba(31,90,158,.07);
}
.metric-card span {
  display: block;
  color: var(--primary);
  font-weight: 900;
  margin-bottom: 8px;
  font-size: 1.45rem;
}
.metric-card h3 { margin: 0 0 8px; }
.metric-card p { color: var(--muted); margin: 0; }

.category-grid, .feature-grid, .scenario-grid, .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.category-card, .feature-card, .scenario-card, .faq-item, .guide-card, .note-panel {
  background: var(--card);
  border: 1px solid rgba(217,230,246,.95);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 12px 34px rgba(31,90,158,.07);
}
.category-card {
  display: grid;
  gap: 10px;
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: attr(data-no);
  color: rgba(70,139,223,.13);
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1;
  position: absolute;
  right: 16px;
  top: 12px;
}
.category-card h3, .feature-card h3, .scenario-card h3, .faq-item h3, .guide-card h3 {
  margin: 0 0 8px;
  line-height: 1.35;
}
.category-card p, .feature-card p, .scenario-card p, .faq-item p, .guide-card p {
  color: var(--muted);
}
.text-link {
  color: var(--primary-dark);
  font-weight: 800;
}

.path-steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.step-card {
  counter-increment: step;
  position: relative;
  padding: 22px 22px 22px 70px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 12px 32px rgba(31,90,158,.06);
}
.step-card::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 18px;
  top: 22px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
  font-size: .85rem;
}
.step-card h3 { margin: 0 0 6px; }
.step-card p { color: var(--muted); }

.security-layout, .split-section, .guide-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  align-items: start;
}
.security-panel {
  border-radius: 30px;
  padding: 26px;
  background:
    linear-gradient(145deg, rgba(70,139,223,.14), rgba(255,255,255,.88)),
    #f4f9ff;
  border: 1px solid rgba(70,139,223,.18);
}
.security-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}
.security-list div {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(217,230,246,.95);
  border-radius: 16px;
}
.dot {
  width: 10px;
  height: 10px;
  margin-top: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--primary);
}

.process-band {
  border-radius: 30px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.process-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.process-item {
  padding: 16px;
  border-radius: 18px;
  background: var(--primary-soft);
}
.process-item b { color: var(--primary-dark); }

.cta-section {
  text-align: center;
  border-radius: 34px;
  padding: 42px 22px;
  background:
    radial-gradient(circle at top right, rgba(70,139,223,.20), transparent 16rem),
    linear-gradient(135deg, #ffffff, #edf6ff);
  border: 1px solid rgba(70,139,223,.18);
  box-shadow: var(--shadow);
}
.cta-section h2 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 7vw, 3.3rem);
  line-height: 1.16;
}
.cta-section p {
  max-width: 680px;
  margin: 0 auto 22px;
  color: var(--muted);
}

.page-hero {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 20px;
}
.page-hero h1 {
  margin: 16px 0;
  font-size: clamp(2.2rem, 9vw, 4.8rem);
}
.page-hero p {
  color: var(--muted);
  font-size: 1.08rem;
}
.article-body {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 70px;
}
.guide-layout aside {
  position: relative;
}
.guide-content {
  display: grid;
  gap: 18px;
}
.reading-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 26px;
  box-shadow: 0 12px 34px rgba(31,90,158,.06);
}
.reading-card h2 { margin-top: 0; }
.tip-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}
.tip-list li {
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: #334a64;
}
.side-card {
  padding: 22px;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(70,139,223,.11), #fff);
  border: 1px solid rgba(70,139,223,.18);
}
.side-card h3 { margin-top: 0; }
.download-holder {
  margin-top: 24px;
}

.site-footer {
  background: #0f2238;
  color: rgba(255,255,255,.78);
}
.footer-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
  display: grid;
  gap: 24px;
}
.footer-brand img { width: 36px; height: 36px; border-radius: 12px; }
.footer-brand span { color: #fff; font-weight: 900; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-links a {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.08);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  text-align: center;
  padding: 16px;
  font-size: .86rem;
  color: rgba(255,255,255,.58);
}

@media (min-width: 720px) {
  .overview-strip { grid-template-columns: repeat(2, 1fr); }
  .category-grid, .feature-grid, .scenario-grid, .faq-grid { grid-template-columns: repeat(2, 1fr); }
  .process-row { grid-template-columns: repeat(2, 1fr); }
  .float-card.card-left {
    position: absolute;
    left: 18px;
    bottom: 24px;
    max-width: 210px;
  }
  .float-card.card-right {
    position: absolute;
    right: 18px;
    top: 30px;
    max-width: 210px;
  }
}

@media (min-width: 960px) {
  .nav-toggle { display: none; }
  .site-nav {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .site-nav a { padding: 9px 12px; }
  .hero-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(390px, .95fr);
    padding: 80px 0 62px;
  }
  .overview-strip { grid-template-columns: repeat(4, 1fr); }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .feature-grid, .scenario-grid { grid-template-columns: repeat(3, 1fr); }
  .security-layout, .split-section { grid-template-columns: 1fr 1fr; gap: 42px; }
  .guide-layout { grid-template-columns: minmax(0, 1fr) 300px; gap: 34px; }
  .guide-layout aside { position: sticky; top: 96px; }
  .path-steps { grid-template-columns: repeat(3, 1fr); }
  .process-row { grid-template-columns: repeat(4, 1fr); }
  .footer-inner { grid-template-columns: 1fr auto; align-items: center; }
}

@media (max-width: 420px) {
  .header-inner, .section, .hero-layout, .page-hero, .article-body, .footer-inner {
    width: min(100% - 24px, 1180px);
  }
  .hero-copy h1 { font-size: 2.35rem; }
  .download-btn { width: 100%; }
  .product-visual { min-height: 380px; padding: 16px; }
}