:root {
  --navy-deep: #0E213F;
  --navy: #1E3358;
  --navy-soft: #2A446C;
  --gold: #C9A227;
  --gold-bright: #F5D76E;
  --gold-deep: #A68620;
  --gold-dim: #F7F1DE;
  --bg: #F3F5F8;
  --surface: #FFFFFF;
  --line: #E5E8EE;
  --ink: #1A2332;
  --ink-2: #5C6673;
  --ink-3: #8A93A0;
  --up: #D94B4B;
  --down: #1A9A5C;
  --shadow-card: 0 1px 2px rgba(14, 33, 63, .04), 0 6px 18px rgba(14, 33, 63, .05);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --wrap: 1080px;
  --header-h: 64px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; border: 0; }
a { color: var(--gold-deep); }
a:hover { color: var(--gold); }
.skip {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--gold); color: var(--navy-deep); padding: 8px 14px;
  border-radius: 8px; font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  background: var(--navy-deep);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(245, 215, 110, .16);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .08em;
  flex-shrink: 0;
}
.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 0 0 1px rgba(245, 215, 110, .28);
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 4px 4px;
}
.site-nav a {
  color: rgba(255, 255, 255, .82);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 8px;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--gold-bright); background: rgba(255, 255, 255, .06); }
.site-nav a.on {
  color: var(--gold-bright);
  font-weight: 600;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--navy-deep);
  color: #fff;
  text-align: left;
  min-height: 560px;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 78% 50%;
  pointer-events: none;
}
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    rgba(6,14,30,.92) 0%,
    rgba(8,18,36,.82) 26%,
    rgba(8,18,36,.42) 52%,
    rgba(8,18,36,.12) 72%,
    rgba(8,18,36,.06) 100%);
  pointer-events: none;
}
.hero .wrap {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 72px;
  padding-bottom: 80px;
}
.hero-copy { max-width: 500px; }
.hero .logo {
  width: 72px;
  height: 72px;
  margin: 0 0 22px;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .28), 0 0 0 1px rgba(245, 215, 110, .28);
}
.hero h1 {
  margin: 0;
  font-size: 56px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .16em;
  line-height: 1.1;
}
.hero .sub {
  margin: 12px 0 0;
  font-size: 20px;
  color: var(--gold-bright);
  letter-spacing: .18em;
  font-weight: 500;
}
.hero .lead {
  max-width: 440px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, .78);
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: .02em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  justify-content: flex-start;
  margin-top: 32px;
}
.hero-ver {
  color: rgba(255, 255, 255, .62);
  font-size: 13px;
  letter-spacing: .04em;
}
.page-hero {
  background:
    radial-gradient(ellipse 70% 80% at 50% 0%, rgba(201, 162, 39, .14), transparent 60%),
    var(--navy-deep);
  color: #fff;
  padding: 40px 0 44px;
}
.page-hero h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #fff;
}
.page-hero p {
  margin: 8px 0 0;
  color: rgba(245, 215, 110, .88);
  font-size: 14px;
  letter-spacing: .06em;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
  border: none;
  cursor: pointer;
}
.btn-gold {
  background: linear-gradient(180deg, #E8C547 0%, #C9A227 100%);
  color: var(--navy-deep);
  box-shadow: 0 6px 16px rgba(201, 162, 39, .35);
}
.btn-gold:hover { color: var(--navy-deep); filter: brightness(1.05); }
.btn-ghost {
  background: transparent;
  color: var(--gold-bright);
  border: 1px solid rgba(245, 215, 110, .45);
}
.btn-ghost:hover { color: var(--gold-bright); background: rgba(245, 215, 110, .08); }
.btn-navy {
  background: var(--navy);
  color: #fff;
}
.btn-navy:hover { color: #fff; background: var(--navy-soft); }
.btn-block { width: 100%; }

/* Sections */
.section { padding: 56px 0; }
.section h2 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 700;
  color: var(--navy-deep);
  letter-spacing: .06em;
}
.section .intro {
  margin: 0 0 28px;
  color: var(--ink-2);
  font-size: 15px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}
.card {
  background: var(--surface);
  border-radius: 16px;
  padding: 22px 20px 20px;
  border: 1px solid #EEF0F4;
  box-shadow: var(--shadow-card);
  border-top: 3px solid var(--gold);
}
.card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: .04em;
}
.card p {
  margin: 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.7;
}
.card .tag {
  display: inline-block;
  margin-top: 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--gold-deep);
  background: var(--gold-dim);
  padding: 2px 8px;
  border-radius: 999px;
}

/* Showcase */
.phones {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px 24px;
  margin-top: 8px;
}
.phone {
  width: 220px;
  margin: 0;
}
.phone img {
  width: 100%;
  border-radius: 28px;
  box-shadow: 0 16px 40px rgba(14, 33, 63, .14);
  border: 1px solid #D9DEE6;
  background: #fff;
}
.phone figcaption {
  margin-top: 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  letter-spacing: .06em;
}
.disclaimer {
  margin: 24px auto 0;
  max-width: 720px;
  text-align: center;
  font-size: 12px;
  color: var(--ink-3);
  line-height: 1.7;
}

/* About / contact */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.panel {
  background: var(--surface);
  border: 1px solid #EEF0F4;
  border-radius: 16px;
  padding: 24px 26px;
  box-shadow: var(--shadow-card);
}
.panel h2 { font-size: 20px; margin-bottom: 10px; }
.panel p { margin: 0; color: var(--ink-2); font-size: 15px; }
.panel p + p { margin-top: 10px; }

/* Download */
.dl-card {
  background: var(--surface);
  border: 1px solid #EEF0F4;
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  padding: 32px 32px 28px;
  max-width: 640px;
  margin: -28px auto 48px;
  position: relative;
}
.dl-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 18px 0 22px;
}
.dl-meta .item {
  background: var(--bg);
  border-radius: 12px;
  padding: 12px 14px;
}
.dl-meta .k { font-size: 12px; color: var(--ink-3); font-weight: 600; }
.dl-meta .v {
  margin-top: 2px;
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}
.dl-meta .item.wide { grid-column: 1 / -1; }
.dl-actions { display: flex; flex-direction: column; gap: 10px; }
.notes {
  margin: 22px 0 0;
  padding: 14px 16px;
  background: var(--gold-dim);
  border-radius: 12px;
  color: var(--navy-deep);
  font-size: 13px;
  line-height: 1.75;
}
.notes strong { color: var(--gold-deep); }
.pkg {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-3);
}

/* Legal docs */
.doc {
  background: var(--surface);
  border: 1px solid #EEF0F4;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: 36px 40px 40px;
  margin: 28px auto 8px;
}
.doc h1 {
  margin: 0;
  text-align: center;
  font-size: 26px;
  color: var(--navy-deep);
  letter-spacing: .06em;
}
.doc .date {
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
  margin: 10px 0 24px;
}
.doc h2 {
  border-left: 4px solid var(--gold);
  padding-left: 10px;
  font-size: 19px;
  margin: 28px 0 10px;
  color: var(--navy);
  letter-spacing: .04em;
}
.doc p { margin: 0 0 12px; }
.doc table {
  border-collapse: collapse;
  width: 100%;
  margin: 8px 0 16px;
  font-size: 14px;
}
.doc td, .doc th {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.doc th { background: var(--gold-dim); color: var(--navy-deep); font-weight: 600; }

/* Footer */
.site-footer {
  background: var(--navy-deep);
  color: #C9CED6;
  font-size: 13px;
  text-align: center;
  padding: 28px 16px 32px;
  margin-top: 48px;
  line-height: 1.8;
}
.site-footer a { color: var(--gold-bright); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; color: var(--gold-bright); }
.site-footer .muted { color: rgba(201, 206, 214, .72); }

@media (max-width: 800px) {
  .hero { min-height: 0; }
  .hero .wrap { padding-top: 52px; padding-bottom: 60px; }
  .hero h1 { font-size: 36px; letter-spacing: .14em; }
  .hero .sub { font-size: 16px; letter-spacing: .12em; }
  .hero .logo { width: 64px; height: 64px; border-radius: 16px; margin-bottom: 18px; }
  .hero-shade {
    background: linear-gradient(90deg,
      rgba(6,14,30,.94) 0%,
      rgba(8,18,36,.82) 48%,
      rgba(8,18,36,.35) 100%);
  }
  .hero-bg { object-position: 82% 50%; }
  .about-grid { grid-template-columns: 1fr; }
  .doc { padding: 24px 18px 28px; }
  .dl-card { padding: 24px 18px 22px; margin-left: 16px; margin-right: 16px; }
  .dl-meta { grid-template-columns: 1fr; }
  .nav { min-height: auto; padding: 10px 0; flex-wrap: wrap; }
  .site-nav { justify-content: flex-start; width: 100%; }
  .site-nav a { padding: 6px 10px; font-size: 13px; }
}