/* xpowerbit.com 全站样式：单一主蓝 #1976d2 + 中性灰白（对齐插件 2026 色彩体系） */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --blue: #1976d2;
  --blue-dark: #1565c0;
  --blue-tint: #e8f0fe;
  --ink: #0f172a;
  --gray: #5f6368;
  --line: #e2e8f0;
  --bg: #f8fafc;
}
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--ink); background: #fff; line-height: 1.6; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* ── 根导航页 ── */
.hub { max-width: 560px; margin: 0 auto; padding: 12vh 20px 40px; text-align: center; }
.hub-brand { font-size: 34px; letter-spacing: -0.5px; }
.hub-tag { color: var(--gray); margin: 6px 0 36px; }
.hub-card { display: block; text-align: left; border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; transition: box-shadow .15s, border-color .15s; }
.hub-card:hover { text-decoration: none; border-color: var(--blue); box-shadow: 0 6px 20px rgba(25,118,210,.12); }
.hub-card-name { display: block; font-size: 19px; font-weight: 700; color: var(--ink); }
.hub-card-desc { display: block; color: var(--gray); font-size: 14px; margin: 6px 0 10px; }
.hub-card-cta { color: var(--blue); font-weight: 600; font-size: 14px; }
.hub-links { margin-top: 22px; font-size: 13.5px; color: var(--gray); }
.hub-foot { margin-top: 48px; color: var(--gray); font-size: 13px; }
.price-note { text-align: center; color: var(--gray); font-size: 13px; max-width: 720px; margin: 22px auto 0; }

/* ── 产品页 ── */
header.site { border-bottom: 1px solid var(--line); }
.site-bar { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.site-logo { font-weight: 700; font-size: 17px; color: var(--ink); }
.site-logo:hover { text-decoration: none; }
.lang-toggle { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 4px 12px; font-size: 13px; cursor: pointer; color: var(--gray); }
.hero { text-align: center; padding: 64px 0 40px; }
.hero h1 { font-size: 38px; letter-spacing: -0.5px; line-height: 1.25; }
.hero p { color: var(--gray); font-size: 17px; max-width: 640px; margin: 14px auto 0; }
.hero-cta { margin-top: 28px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn { display: inline-block; border-radius: 10px; padding: 11px 22px; font-size: 15px; font-weight: 600; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); text-decoration: none; }
.btn-ghost { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--blue); text-decoration: none; }

.features { padding: 44px 0; background: var(--bg); }
.features h2, .pricing h2, .faq h2 { text-align: center; font-size: 26px; margin-bottom: 28px; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.feat { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.feat h3 { font-size: 15.5px; margin-bottom: 6px; }
.feat p { color: var(--gray); font-size: 13.5px; }
.feat .pro-tag { display: inline-block; margin-left: 6px; background: var(--blue-tint); color: var(--blue); font-size: 11px; font-weight: 700; border-radius: 8px; padding: 0 7px; vertical-align: 2px; }

.pricing { padding: 52px 0; }
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; max-width: 860px; margin: 0 auto; }
.plan { border: 1px solid var(--line); border-radius: 14px; padding: 26px 24px; display: flex; flex-direction: column; }
.plan--hot { border-color: var(--blue); box-shadow: 0 6px 24px rgba(25,118,210,.14); position: relative; }
.plan-flag { position: absolute; top: -11px; left: 50%; transform: translateX(-50%); background: var(--blue); color: #fff; font-size: 11px; font-weight: 700; border-radius: 10px; padding: 2px 10px; }
.plan-name { font-size: 15px; font-weight: 700; }
.plan-price { font-size: 34px; font-weight: 800; margin: 10px 0 2px; }
.plan-price span { font-size: 14px; font-weight: 500; color: var(--gray); }
.plan ul { list-style: none; margin: 14px 0 20px; flex: 1; }
.plan li { font-size: 13.5px; color: var(--gray); padding: 4px 0 4px 22px; position: relative; }
.plan li::before { content: "✓"; position: absolute; left: 2px; color: var(--blue); font-weight: 700; }
.plan .btn { width: 100%; text-align: center; }

.faq { padding: 8px 0 56px; }
.faq-item { border-bottom: 1px solid var(--line); padding: 14px 0; max-width: 720px; margin: 0 auto; }
.faq-item h3 { font-size: 15px; }
.faq-item p { color: var(--gray); font-size: 13.5px; margin-top: 4px; }

footer.site { border-top: 1px solid var(--line); padding: 28px 0 36px; color: var(--gray); font-size: 13px; }
.foot-links { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 10px; }
.foot-paddle { font-size: 12px; color: #94a3b8; }

/* ── success 页 ── */
.success-box { max-width: 620px; margin: 8vh auto 40px; padding: 0 20px; text-align: center; }
.success-box h1 { font-size: 28px; }
.success-sub { color: var(--gray); margin-top: 8px; }
.key-panel { margin: 28px 0; padding: 22px; border: 2px dashed var(--blue); border-radius: 14px; background: var(--blue-tint); }
.key-value { font-family: ui-monospace, Menlo, monospace; font-size: 22px; letter-spacing: 1.5px; font-weight: 700; color: var(--blue-dark); word-break: break-all; }
.copy-btn { margin-top: 14px; }
.steps { text-align: left; max-width: 460px; margin: 0 auto; }
.steps li { margin: 8px 0; color: var(--gray); font-size: 14.5px; }
.state-note { color: var(--gray); margin: 30px 0; }
.state-error { color: #b91c1c; }

/* ── 法务页 ── */
.legal { max-width: 760px; margin: 0 auto; padding: 40px 20px 60px; }
.legal h1 { font-size: 26px; margin-bottom: 4px; }
.legal .updated { color: var(--gray); font-size: 13px; margin-bottom: 24px; }
.legal h2 { font-size: 18px; margin: 26px 0 8px; }
.legal p, .legal li { color: #334155; font-size: 14.5px; }
.legal ul { padding-left: 22px; margin: 8px 0; }

@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .plan-price { font-size: 28px; }
}