:root {
  --paper: #f7f2e8;
  --paper-deep: #eee4d3;
  --ink: #211b16;
  --muted: #6d6258;
  --cinnabar: #9d2d24;
  --cinnabar-dark: #742018;
  --gold: #a6782c;
  --line: rgba(86, 60, 38, 0.16);
  --card: rgba(255, 253, 247, 0.84);
  --shadow: 0 22px 60px rgba(75, 51, 31, 0.12);
  --serif: "Noto Serif SC", "Songti SC", "PMingLiU", serif;
  --sans: "Inter Tight", "Noto Sans SC", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(157, 45, 36, 0.07), transparent 28rem),
    radial-gradient(circle at 92% 26%, rgba(166, 120, 44, 0.08), transparent 24rem),
    linear-gradient(180deg, #fbf8f1 0%, var(--paper) 45%, #f2eadc 100%);
  font-family: var(--sans);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.22;
  background-image: repeating-linear-gradient(0deg, transparent 0 4px, rgba(74, 52, 32, 0.025) 4px 5px);
}

a { color: inherit; }
.overseas-shell { position: relative; overflow: hidden; }
.overseas-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.overseas-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  border-bottom: 1px solid var(--line);
}
.overseas-brand { display: flex; align-items: center; gap: 11px; text-decoration: none; font-family: var(--serif); font-weight: 600; }
.overseas-brand img { width: 38px; height: 38px; border-radius: 12px; }
.overseas-nav-actions { display: flex; align-items: center; gap: 10px; }
.overseas-lang, .overseas-login { text-decoration: none; font-size: 13px; color: var(--muted); }
.overseas-lang { padding: 8px 10px; border: 1px solid var(--line); border-radius: 999px; }
.overseas-login { padding: 9px 14px; color: #fff; background: var(--ink); border-radius: 999px; }

.overseas-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(330px, 0.85fr);
  align-items: center;
  gap: 68px;
  padding: 86px 0 76px;
}
.overseas-eyebrow { color: var(--cinnabar); font-weight: 700; letter-spacing: 0.18em; font-size: 13px; }
.overseas-hero h1 { margin: 17px 0 22px; font-family: var(--serif); font-size: clamp(42px, 6vw, 76px); line-height: 1.08; letter-spacing: -0.035em; font-weight: 600; }
.overseas-hero h1 span { color: var(--cinnabar); }
.overseas-lead { max-width: 670px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.9; }
.overseas-hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 32px; }
.overseas-primary, .overseas-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 22px; border-radius: 8px; text-decoration: none; font-weight: 700; transition: transform 220ms ease, box-shadow 220ms ease, background 220ms ease; }
.overseas-primary { color: #fff; background: linear-gradient(135deg, var(--cinnabar), var(--cinnabar-dark)); box-shadow: 0 12px 28px rgba(116, 32, 24, 0.22); }
.overseas-secondary { border: 1px solid var(--line); background: rgba(255,255,255,0.45); }
.overseas-primary:hover, .overseas-secondary:hover { transform: translateY(-2px); }
.overseas-micro { margin-top: 14px; color: var(--muted); font-size: 12px; }

.overseas-seal-card {
  position: relative;
  padding: 34px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px 8px 24px 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}
.overseas-seal { width: 76px; height: 76px; display: grid; place-items: center; margin-left: auto; border: 3px double var(--cinnabar); color: var(--cinnabar); font-family: var(--serif); font-size: 28px; line-height: 1; transform: rotate(3deg); }
.overseas-proof-title { margin: 28px 0 8px; font-family: var(--serif); font-size: 23px; }
.overseas-proof-list { list-style: none; padding: 0; margin: 20px 0 0; }
.overseas-proof-list li { display: flex; gap: 11px; padding: 13px 0; border-top: 1px solid var(--line); color: var(--muted); line-height: 1.55; }
.overseas-proof-list b { color: var(--ink); min-width: 82px; }

.overseas-trust { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.overseas-trust div { padding: 22px 18px; text-align: center; border-right: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.overseas-trust div:last-child { border-right: 0; }
.overseas-trust strong { display: block; color: var(--ink); font-family: var(--serif); font-size: 18px; margin-bottom: 5px; }

.overseas-section { padding: 88px 0; }
.overseas-section-head { max-width: 720px; margin-bottom: 38px; }
.overseas-section-head small { color: var(--cinnabar); letter-spacing: 0.18em; font-weight: 700; }
.overseas-section h2 { margin: 12px 0; font-family: var(--serif); font-size: clamp(30px, 4vw, 48px); font-weight: 600; }
.overseas-section-head p { color: var(--muted); font-size: 16px; line-height: 1.85; }
.overseas-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.overseas-feature { padding: 26px; background: rgba(255,253,247,0.68); border: 1px solid var(--line); border-radius: 14px; }
.overseas-feature-index { color: var(--cinnabar); font-family: "Newsreader", serif; font-size: 13px; }
.overseas-feature h3 { margin: 18px 0 9px; font-family: var(--serif); font-size: 21px; }
.overseas-feature p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.overseas-method { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 44px; padding: 46px; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(157,45,36,.055), rgba(255,253,247,.76)); border-radius: 24px; }
.overseas-method-mark { font-family: var(--serif); font-size: clamp(50px, 8vw, 96px); color: rgba(157,45,36,.15); line-height: 1; }
.overseas-method h2 { margin-top: 0; }
.overseas-method p { color: var(--muted); line-height: 1.9; }

.overseas-price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.overseas-price { padding: 24px 20px; border: 1px solid var(--line); background: var(--card); border-radius: 12px; }
.overseas-price.featured { border-color: rgba(157,45,36,.48); box-shadow: 0 14px 38px rgba(116,32,24,.1); }
.overseas-price-label { color: var(--muted); font-size: 12px; }
.overseas-price h3 { min-height: 52px; margin: 10px 0 18px; font-family: var(--serif); font-size: 19px; }
.overseas-usd { color: var(--cinnabar); font-family: "Newsreader", serif; font-size: 28px; font-weight: 600; }
.overseas-cny { color: var(--muted); font-size: 12px; margin-top: 5px; }
.overseas-price-note { margin: 15px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }

.overseas-faq { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.overseas-faq details { padding: 20px 22px; border: 1px solid var(--line); background: rgba(255,253,247,.62); border-radius: 10px; }
.overseas-faq summary { cursor: pointer; font-family: var(--serif); font-weight: 600; }
.overseas-faq p { margin: 13px 0 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.overseas-final { padding: 56px; margin-bottom: 78px; color: #fff; background: var(--ink); border-radius: 28px 8px 28px 8px; text-align: center; }
.overseas-final h2 { color: #fff; margin-top: 0; }
.overseas-final p { color: rgba(255,255,255,.7); line-height: 1.8; }
.overseas-final .overseas-primary { background: linear-gradient(135deg, #bd473a, #8d261e); }
.overseas-footer { padding: 25px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.7; }
.overseas-footer-row { display: flex; justify-content: space-between; gap: 20px; }
.overseas-footer a { color: var(--muted); }

@media (max-width: 860px) {
  .overseas-hero { grid-template-columns: 1fr; gap: 42px; padding: 58px 0; }
  .overseas-trust { grid-template-columns: repeat(2, 1fr); }
  .overseas-trust div:nth-child(2) { border-right: 0; }
  .overseas-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .overseas-method { grid-template-columns: 1fr; }
  .overseas-price-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .overseas-wrap { width: min(100% - 28px, 1120px); }
  .overseas-nav { min-height: 66px; }
  .overseas-brand span { display: none; }
  .overseas-login { padding: 8px 11px; }
  .overseas-hero { padding-top: 42px; }
  .overseas-hero h1 { font-size: 42px; }
  .overseas-lead { font-size: 16px; }
  .overseas-hero-actions a { width: 100%; }
  .overseas-seal-card { padding: 25px; }
  .overseas-trust, .overseas-feature-grid, .overseas-price-grid, .overseas-faq { grid-template-columns: 1fr; }
  .overseas-trust div { border-right: 0; border-bottom: 1px solid var(--line); }
  .overseas-trust div:last-child { border-bottom: 0; }
  .overseas-section { padding: 64px 0; }
  .overseas-method { padding: 28px 23px; }
  .overseas-final { padding: 38px 22px; }
  .overseas-footer-row { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}