/* 英文场景页共用样式（与中文场景页同一套视觉：暗色 + 橙蓝渐变） */
:root {
  --bg: #0b0c10;
  --panel: #141724;
  --line: #22273a;
  --text: #f3f4f6;
  --muted: #8e95a5;
  --brand: #ff7a45;
  --brand-2: #2d8cff;
  --maxw: 1120px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: #9eb8ff; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 12, 16, 0.92);
  backdrop-filter: blur(14px);
}
.site-header .wrap { display: flex; align-items: center; gap: 22px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; font-weight: 700; }
.brand-mark { color: var(--brand); }
.site-nav { display: flex; gap: 18px; margin-left: auto; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.site-nav a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 40px; padding: 0 18px; border: 1px solid var(--line); border-radius: 999px;
  color: var(--text); text-decoration: none; font-size: 15px; white-space: nowrap;
}
.btn-primary { border-color: transparent; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; }
.hero { padding: 56px 0 40px; }
h1 { margin: 16px 0 14px; font-size: 42px; line-height: 1.22; letter-spacing: -0.5px; }
h2 { margin: 0 0 12px; font-size: 27px; line-height: 1.3; }
h3 { margin: 0 0 8px; font-size: 17px; }
p { margin: 0 0 14px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px;
  color: var(--muted); font-size: 14px;
}
.pill i { width: 8px; height: 8px; border-radius: 50%; background: var(--brand-2); }
.hero-sub { max-width: 780px; color: var(--muted); font-size: 17px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 14px; }
.section { padding: 48px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-sub { color: var(--muted); margin-bottom: 22px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.steps { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.step { padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.step b { display: block; margin-bottom: 6px; }
.step span { color: var(--muted); font-size: 14px; }
.faq details { padding: 16px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 12px 0 0; color: var(--muted); font-size: 15px; }
table { width: 100%; border-collapse: collapse; margin: 8px 0 18px; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
th { background: rgba(255, 255, 255, 0.04); font-weight: 600; color: var(--text); }
td { color: var(--muted); }
@media (max-width: 720px) {
  table { display: block; overflow-x: auto; white-space: nowrap; }
}
.site-footer { padding: 40px 0 56px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; margin-bottom: 14px; }
.site-footer a { color: #cbd5e1; text-decoration: none; }
@media (max-width: 900px) {
  .grid, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  h1 { font-size: 32px; }
  .site-nav { display: none; }
}
@media (max-width: 560px) {
  .grid, .steps { grid-template-columns: minmax(0, 1fr); }
  h1 { font-size: 27px; }
}