:root {
    --blue: #1b4eff;
    --violet: #6a35ff;
    --ink: #0d1330;
    --muted: #62709a;
    --line: rgba(39, 58, 122, 0.14);
    --panel: rgba(255, 255, 255, 0.82);
    --bg: #f6f8ff;
    --white: #ffffff;
    --glow: linear-gradient(135deg, rgba(27, 78, 255, 0.95), rgba(106, 53, 255, 0.92));
    --shadow: 0 24px 70px rgba(32, 47, 116, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(106, 53, 255, 0.16), transparent 32%),
        radial-gradient(circle at right 20%, rgba(27, 78, 255, 0.18), transparent 26%),
        linear-gradient(180deg, #eef3ff 0%, #ffffff 44%, #f8f9ff 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 30; backdrop-filter: blur(14px); background: rgba(255, 255, 255, 0.72); border-bottom: 1px solid rgba(71, 95, 190, 0.1); }
.header-bar { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 14px; font-size: 24px; font-weight: 800; letter-spacing: 0.02em; }
.brand img { width: 42px; height: 42px; }
.main-nav { display: flex; gap: 22px; font-size: 15px; color: var(--muted); }
.main-nav a:hover { color: var(--blue); }
.header-cta, .button-primary, .button-secondary, .page-link { border-radius: 999px; transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease; }
.header-cta, .button-primary { background: var(--glow); color: var(--white); box-shadow: 0 18px 40px rgba(68, 77, 197, 0.3); }
.header-cta, .button-primary, .button-secondary { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; font-weight: 700; }
.button-secondary { border: 1px solid rgba(45, 72, 186, 0.18); background: rgba(255, 255, 255, 0.8); color: var(--ink); }
.header-cta:hover, .button-primary:hover, .button-secondary:hover, .page-link:hover { transform: translateY(-2px); }
.hero { padding: 70px 0 30px; }
.hero-grid { display: grid; grid-template-columns: 1.25fr 0.9fr; gap: 34px; align-items: stretch; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.hero h1, .page-banner h1 { margin: 18px 0 16px; font-size: clamp(34px, 6vw, 62px); line-height: 1.06; letter-spacing: -0.03em; }
.hero-text, .page-banner p, .content-card p, .feature-card p, .article-card p, .detail-content p, .pricing-note p, .download-side p { color: var(--muted); line-height: 1.9; font-size: 16px; }
.hero-actions { display: flex; gap: 16px; margin: 32px 0 20px; flex-wrap: wrap; }
.hero-points { display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.hero-points span, .detail-meta span { padding: 10px 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.72); border: 1px solid var(--line); }
.hero-panel { padding: 26px; border-radius: 30px; background: linear-gradient(160deg, rgba(10, 20, 64, 0.98), rgba(52, 63, 151, 0.92)); box-shadow: var(--shadow); display: grid; gap: 18px; }
.metric-card { padding: 22px; border-radius: 24px; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.88); }
.metric-card strong { display: block; margin-bottom: 10px; font-size: 28px; color: var(--white); }
.section { padding: 34px 0 82px; }
.section.alt { padding-top: 10px; }
.section-head { margin-bottom: 28px; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); margin: 14px 0 0; line-height: 1.15; }
.feature-grid, .content-grid, .pricing-grid, .article-grid { display: grid; gap: 22px; }
.feature-grid { grid-template-columns: repeat(4, 1fr); }
.content-grid, .article-grid { grid-template-columns: repeat(3, 1fr); }
.pricing-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.feature-card, .content-card, .pricing-card, .article-card, .download-box, .download-side, .article-row, .article-detail { background: var(--panel); border: 1px solid var(--line); border-radius: 28px; box-shadow: var(--shadow); }
.feature-card, .content-card, .pricing-card, .article-card, .download-side { padding: 28px; }
.feature-card h3, .content-card h2, .article-card h3, .article-row h2, .pricing-card .plan-name, .download-main h2, .download-side h3, .info-stack h3 { margin-top: 0; margin-bottom: 14px; }
.split-layout, .download-layout, .contact-layout { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; }
.info-stack { display: grid; gap: 16px; }
.info-stack article { padding: 26px; border-radius: 26px; background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(238, 243, 255, 0.86)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.check-list { padding-left: 20px; line-height: 2; color: var(--ink); }
.center-action { margin-top: 24px; text-align: center; }
.page-banner { padding: 72px 0 14px; }
.page-banner.slim { padding-bottom: 0; }
.inner-page .page-banner h1 { font-size: clamp(30px, 5vw, 52px); }
.download-layout { align-items: start; }
.download-main { padding: 32px; border-radius: 28px; background: linear-gradient(160deg, rgba(255, 255, 255, 0.96), rgba(239, 243, 255, 0.92)); border: 1px solid var(--line); box-shadow: var(--shadow); }
.download-box { margin-top: 24px; padding: 24px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.download-box-info { flex: 1; min-width: 0; }
.download-box-info span { display: block; color: var(--ink); line-height: 1.65; }
.download-button { min-width: 224px; flex-shrink: 0; text-align: center; line-height: 1.35; padding: 12px 22px; }
.download-box strong, .plan-price, .footer-brand { font-size: 22px; font-weight: 800; }
.pricing-card { position: relative; overflow: hidden; min-height: 260px; }
.pricing-card.featured { background: linear-gradient(180deg, rgba(27, 78, 255, 0.95), rgba(106, 53, 255, 0.94)); color: var(--white); }
.pricing-card.featured p { color: rgba(255, 255, 255, 0.88); }
.article-card a:hover, .article-row a:hover { color: var(--blue); }
.article-date, .article-row-date { color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.article-row { display: grid; grid-template-columns: 140px 1fr; gap: 22px; padding: 26px; margin-bottom: 18px; }
.article-row-body p { margin: 0; color: var(--muted); line-height: 1.85; }
.pagination { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.page-link { min-width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.88); }
.page-link.active { background: var(--glow); color: var(--white); box-shadow: 0 18px 36px rgba(44, 68, 185, 0.24); }
.article-detail { padding: 34px; }
.detail-meta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.detail-summary { padding: 20px 22px; border-radius: 22px; background: rgba(27, 78, 255, 0.06); margin-bottom: 24px; line-height: 1.9; }
.detail-content p { margin: 0 0 18px; }
.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.pricing-note { margin-top: 26px; padding: 0 4px; }
.pricing-note p { margin: 0; }
.site-footer { margin-top: 20px; padding: 38px 0 22px; border-top: 1px solid rgba(54, 77, 164, 0.1); background: rgba(255, 255, 255, 0.65); }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr 0.9fr; gap: 24px; }
.footer-title { margin-bottom: 12px; font-weight: 700; }
.footer-links, .friend-links { display: flex; flex-wrap: wrap; gap: 10px 14px; color: var(--muted); }
.footer-note { margin-top: 22px; padding-top: 18px; border-top: 1px solid rgba(54, 77, 164, 0.1); color: var(--muted); font-size: 14px; }
.floating-service { position: fixed; right: 14px; top: 50%; transform: translateY(-50%); z-index: 40; width: 52px; min-height: 170px; padding: 18px 12px; border-radius: 22px; background: var(--glow); color: var(--white); box-shadow: 0 18px 42px rgba(49, 57, 161, 0.34); writing-mode: vertical-rl; text-orientation: mixed; font-weight: 700; letter-spacing: 0.1em; }

@media (max-width: 1080px) {
    .hero-grid, .feature-grid, .content-grid, .pricing-grid, .article-grid, .split-layout, .download-layout, .contact-layout, .footer-grid, .article-row { grid-template-columns: 1fr; }
    .header-bar { flex-wrap: wrap; padding: 16px 0; }
    .main-nav { flex-wrap: wrap; }
    .download-button { width: 100%; min-width: 0; }
}

@media (max-width: 680px) {
    .container { width: min(100% - 24px, 1180px); }
    .header-cta { width: 100%; }
    .hero { padding-top: 42px; }
    .hero-actions, .detail-actions { flex-direction: column; }
    .button-primary, .button-secondary, .header-cta { width: 100%; }
    .floating-service { min-height: auto; width: auto; padding: 12px 16px; writing-mode: initial; top: auto; bottom: 20px; right: 12px; transform: none; }
}