:root {
  --wb-primary: #1f66ff;
  --wb-primary-dark: #1751d6;
  --wb-secondary: #4d8cff;
  --wb-line: #e6eefb;
  --wb-bg: #f4f8ff;
  --wb-ink: #0f1f38;
  --wb-muted: #5f6f88;
  --wb-wrap: 1180px;
  --wb-topbar-h: 70px;
  --wb-radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--wb-ink);
  background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
  line-height: 1.7;
  padding-top: var(--wb-topbar-h);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { padding-left: 18px; }
.wb-wrap { max-width: var(--wb-wrap); margin: 0 auto; padding: 0 18px; }
.wb-main { padding: 28px 0 36px; }
.wb-skip { position: absolute; left: -9999px; }
.wb-skip:focus { left: 10px; top: 10px; z-index: 999; background: #111; color: #fff; padding: 8px 10px; }

.wb-topbar {
  position: fixed; left: 0; right: 0; top: 0; z-index: 90;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e6edf8;
}
.wb-topbar__inner { height: var(--wb-topbar-h); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.wb-brand__mark { font-size: 22px; font-weight: 800; color: var(--wb-primary); }
.wb-topnav { display: flex; align-items: center; gap: 6px; }
.wb-topnav a { font-size: 14px; padding: 8px 13px; border-radius: 999px; color: #355174; font-weight: 500; }
.wb-topnav a:hover { color: var(--wb-primary); background: #f2f6ff; }
.wb-topbar__right { display: flex; align-items: center; gap: 10px; }
.wb-menu { display: none; border: 1px solid var(--wb-line); background: #fff; border-radius: 10px; padding: 8px; }
.wb-menu svg { width: 20px; height: 20px; }

.wb-btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 18px; border-radius: 10px; border: 1px solid #d3def2;
  background: #fff; color: #284061; font-weight: 600; box-shadow: 0 1px 0 rgba(255,255,255,.5) inset;
}
.wb-btn--primary { color: #fff !important; border-color: var(--wb-primary); background: linear-gradient(180deg, #2d6dff, #1f5eff); }
.wb-btn--primary:hover { background: linear-gradient(180deg, #2566e8, var(--wb-primary-dark)); }
.wb-actions, .hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }

.hero-shell, .page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, .75fr);
  gap: 18px;
  align-items: stretch;
  padding: 34px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f6f9ff 100%);
  border: 1px solid var(--wb-line);
  box-shadow: 0 18px 40px rgba(15, 31, 56, 0.06);
}
.hero-shell--download { align-items: center; }
.hero-shell h1, .page-shell h1 { margin: 8px 0 0; font-size: clamp(30px, 4.8vw, 56px); line-height: 1.12; letter-spacing: -.02em; }
.hero-eyebrow, .section-kicker { color: var(--wb-primary); font-weight: 700; font-size: 14px; }
.hero-lead { margin: 14px 0 0; color: var(--wb-muted); font-size: 17px; max-width: 60ch; }
.hero-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.hero-stat { border: 1px solid #dfe8f7; background: #fff; border-radius: 14px; padding: 14px; }
.hero-stat strong { display: block; font-size: 26px; color: var(--wb-primary); }
.hero-stat span { color: var(--wb-muted); font-size: 13px; }
.hero-badges { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-badges span, .wb-tag { border: 1px solid #d5e2f9; background: #f6f9ff; border-radius: 999px; padding: 5px 10px; font-size: 13px; color: #345987; }

.translator-card, .mini-list-card {
  border-radius: 18px;
  background: linear-gradient(180deg, #f9fbff 0%, #eef4ff 100%);
  border: 1px solid #d8e2f5;
  padding: 18px;
  height: 100%;
  box-shadow: 0 8px 20px rgba(15,31,56,.04);
}
.translator-card__top { display: flex; justify-content: space-between; align-items: center; color: #284061; font-weight: 700; }
.translator-card__body { display: grid; gap: 12px; margin-top: 14px; }
.translator-box { min-height: 122px; border-radius: 14px; border: 1px solid #d9e4fb; background: #fff; padding: 14px; }
.translator-box--input { background: linear-gradient(180deg, #ffffff, #f8fbff); }
.translator-box p { margin: 0; color: #36506f; font-size: 15px; }
.translator-card__foot { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.trust-bar { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; padding: 14px 18px; margin-top: 16px; color: #3f597e; border: 1px solid #dfe8f7; border-radius: 14px; background: rgba(255,255,255,.78); }

.section-card {
  margin-top: 18px;
  padding: 24px;
  border-radius: 18px;
  background: #fff;
  border: 1px solid var(--wb-line);
  box-shadow: 0 10px 28px rgba(15, 31, 56, 0.05);
}
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: end; margin-bottom: 16px; }
.section-head h2 { margin: 6px 0 0; font-size: clamp(24px, 2.8vw, 34px); line-height: 1.2; }

.feature-grid, .download-grid, .price-grid, .testimonials-grid, .article-feed { display: grid; gap: 14px; }
.feature-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.feature-grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.download-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.price-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.testimonials-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.article-feed { grid-template-columns: repeat(2, minmax(0,1fr)); }

.feature-card, .download-card, .price-card, .testimonial-card, .article-card, .faq-card {
  border: 1px solid #e4ebf8;
  border-radius: 14px;
  background: #fff;
  transition: transform .2s ease, box-shadow .2s ease;
}
.feature-card:hover, .article-card:hover, .download-card:hover, .price-card:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(22,49,94,.08); }
.feature-card, .download-card, .price-card, .testimonial-card { padding: 18px; }
.feature-icon { width: 46px; height: 46px; border-radius: 14px; display: grid; place-items: center; background: #f2f6ff; font-size: 22px; margin-bottom: 12px; }
.feature-card h3, .download-card h3, .price-card h3, .testimonial-card h3 { margin: 0 0 8px; font-size: 18px; }
.feature-card p, .download-card p, .price-card p, .testimonial-card p { margin: 0; color: #5c7190; }

.price-card__value { margin: 10px 0 12px; font-size: 26px; font-weight: 800; color: var(--wb-primary); }
.price-card--vip .price-card__value { color: #0f7a52; }
.price-card--team .price-card__value { color: #7a4af6; }

.update-strip { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px; background: linear-gradient(135deg, #eff5ff, #f8fbff); }
.update-strip h2 { margin: 6px 0 8px; }
.update-strip p { margin: 0; color: var(--wb-muted); }
.update-strip__meta { color: #5f6f88; font-size: 14px; }

.stars { margin-bottom: 8px; color: #ffb100; }
.testimonial-card span { display: block; margin-top: 12px; color: #7084a2; font-size: 13px; }

.article-card { overflow: hidden; }
.article-card__img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.article-card__body { padding: 14px; display: grid; gap: 8px; }
.article-card__body h2, .article-card__body h3 { margin: 0; font-size: 20px; line-height: 1.34; }
.article-card__body p { margin: 0; color: #5c7190; }
.article-card__body span { color: #7387a5; font-size: 13px; }
.article-card__body a { color: inherit; }

.page-shell__panel { display: flex; }
.mini-list-card ul { margin: 10px 0 0; }
.toolbar-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.toolbar-row a { border: 1px solid #dce7fa; background: #f7faff; border-radius: 999px; padding: 6px 11px; font-size: 13px; }
.toolbar-row a:hover { color: var(--wb-primary); }
.wb-meta { color: #6b81a0; font-size: 14px; margin-top: 8px; }
.article-body { padding: 22px; }
.article-intro { border: 1px solid #cdddfb; border-left: 4px solid var(--wb-primary); border-radius: 12px; background: #f0f6ff; padding: 12px 14px; margin-bottom: 14px; color: #3d5373; }
.wb-prose a { color: var(--wb-primary); text-decoration: underline; }
.download-banner { margin-top: 18px; padding: 18px; border-radius: 16px; background: linear-gradient(135deg, #f2f7ff, #eef5ff); border: 1px solid #d5e2fb; display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; }
.wb-pn { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.wb-disabled { opacity: .58; pointer-events: none; }
.wb-btn--block { width: 100%; }
.wb-pagination { margin-top: 16px; display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; }

.wb-footer { margin-top: 24px; background: #0f2140; color: rgba(255,255,255,.9); padding-top: 22px; }
.wb-foot-cta { border: 1px solid rgba(255,255,255,.28); border-radius: 16px; background: linear-gradient(135deg, rgba(31,94,255,.42), rgba(64,125,255,.2)); padding: 20px; display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: center; }
.wb-foot-cta__k { margin: 0; color: #d4e5ff; font-weight: 700; }
.wb-foot-cta h2 { margin: 8px 0 0; color: #fff; }
.wb-foot-cta p { margin: 8px 0 0; color: rgba(255,255,255,.8); }
.wb-foot-grid { margin-top: 18px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 14px; }
.wb-foot-grid h3 { margin: 0 0 8px; color: #fff; }
.wb-foot-grid p, .wb-foot-grid ul { margin: 0; color: rgba(255,255,255,.78); }
.wb-foot-bottom { margin-top: 16px; border-top: 1px solid rgba(255,255,255,.14); padding: 12px 0; }
.wb-foot-bottom__in { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 14px; }

.wb-faqBtn { width: 100%; border: none; background: transparent; padding: 0; text-align: left; font-size: 18px; font-weight: 700; color: #173257; cursor: pointer; }
.wb-faqPanel p { margin: 10px 0 0; color: #5c7190; }
.faq-card { padding: 18px; margin-bottom: 10px; }

@media (max-width: 1024px) {
  :root { --wb-topbar-h: 62px; }
  .wb-menu { display: inline-flex; }
  .wb-topnav { position: absolute; top: calc(var(--wb-topbar-h) - 1px); left: 12px; right: 12px; border: 1px solid var(--wb-line); border-radius: 12px; background: #fff; padding: 10px; display: grid; }
  .wb-topnav[aria-hidden="true"] { display: none; }
  .hero-shell, .page-shell, .feature-grid, .feature-grid--4, .download-grid, .price-grid, .testimonials-grid, .article-feed, .wb-foot-grid, .wb-pn, .download-banner { grid-template-columns: 1fr; }
  .section-head, .update-strip { grid-template-columns: 1fr; display: grid; }
  .hero-stats { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .wb-btn { width: 100%; }
  .hero-shell, .page-shell, .section-card { padding: 18px; }
  .hero-stats { grid-template-columns: 1fr; }
  .wb-foot-cta { grid-template-columns: 1fr; }
}