:root {
    --of-primary: #2563eb;
    --of-primary-dark: #1d4ed8;
    --of-accent: #0ea5e9;
    --of-text: #0f172a;
    --of-muted: #64748b;
    --of-border: #e2e8f0;
    --of-bg: #f8fafc;
    --of-card: #ffffff;
    --of-success: #059669;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--of-text);
    background: var(--of-bg);
    line-height: 1.6;
}

a { color: var(--of-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--of-border);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}
.site-nav__brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--of-text);
}
.site-nav__brand:hover { text-decoration: none; color: var(--of-primary); }
.site-nav__links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 14px;
    font-size: 0.875rem;
}
.site-nav__links a {
    color: var(--of-muted);
    padding: 4px 0;
}
.site-nav__links a:hover { color: var(--of-primary); text-decoration: none; }
.site-nav__cta {
    padding: 8px 16px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--of-primary), var(--of-primary-dark));
    color: #fff !important;
    font-weight: 500;
    font-size: 0.875rem;
}
.site-nav__cta:hover { text-decoration: none; filter: brightness(1.05); }

.hero {
    padding: 48px 24px 56px;
    text-align: center;
    background: linear-gradient(165deg, #0f172a 0%, #1e3a5f 50%, #0c4a6e 100%);
    color: #f8fafc;
}
.hero h1 {
    margin: 0 0 12px;
    font-size: clamp(1.75rem, 4vw, 2.35rem);
    font-weight: 700;
    letter-spacing: 0.02em;
}
.hero p {
    margin: 0 auto;
    max-width: 42em;
    font-size: 1rem;
    color: rgba(248, 250, 252, 0.78);
}
.hero__badge {
    display: inline-block;
    margin-bottom: 16px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(56, 189, 248, 0.2);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.35);
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.section { padding: 48px 0; }
.section--alt { background: #fff; border-top: 1px solid var(--of-border); }
.section h2 {
    margin: 0 0 8px;
    font-size: 1.5rem;
    text-align: center;
}
.section .lead {
    margin: 0 0 36px;
    text-align: center;
    color: var(--of-muted);
    font-size: 0.9375rem;
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}
.card {
    display: block;
    padding: 24px;
    background: var(--of-card);
    border: 1px solid var(--of-border);
    border-radius: 14px;
    transition: box-shadow 0.2s, transform 0.2s;
    color: inherit;
    text-decoration: none !important;
}
.card:hover {
    box-shadow: 0 12px 40px -12px rgba(15, 23, 42, 0.15);
    transform: translateY(-2px);
}
.card__icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 14px;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
}
.card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.card p { margin: 0; font-size: 0.875rem; color: var(--of-muted); }
.card__tag {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--of-primary);
}

.page-hero {
    padding: 40px 24px 32px;
    background: linear-gradient(180deg, #eff6ff 0%, var(--of-bg) 100%);
    border-bottom: 1px solid var(--of-border);
}
.page-hero h1 { margin: 0 0 12px; font-size: clamp(1.5rem, 3vw, 2rem); }
.page-hero .sub { margin: 0; max-width: 40em; color: var(--of-muted); font-size: 0.9375rem; }

.features {
    display: grid;
    gap: 20px;
    margin: 32px 0;
}
@media (min-width: 720px) {
    .features { grid-template-columns: repeat(2, 1fr); }
}
.feature {
    padding: 20px 22px;
    background: #fff;
    border: 1px solid var(--of-border);
    border-radius: 12px;
}
.feature h3 { margin: 0 0 8px; font-size: 1rem; color: var(--of-primary); }
.feature p { margin: 0; font-size: 0.875rem; color: var(--of-muted); }

.plugin-grid {
    display: grid;
    gap: 16px;
    margin-top: 8px;
}
@media (min-width: 640px) {
    .plugin-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
    .plugin-grid { grid-template-columns: repeat(3, 1fr); }
}
.plugin-card {
    padding: 20px 22px;
    background: var(--of-card);
    border: 1px solid var(--of-border);
    border-radius: 12px;
    border-left: 4px solid var(--of-primary);
}
.plugin-card__top {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.plugin-card__icon {
    font-size: 1.45rem;
    line-height: 1;
    flex-shrink: 0;
}
.plugin-card__meta { flex: 1; min-width: 0; }
.plugin-card__tag {
    display: inline-block;
    margin-bottom: 4px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--of-primary);
}
.plugin-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.plugin-card__hl {
    margin: 0 0 10px;
    font-size: 0.8125rem;
    color: var(--of-success);
    font-weight: 600;
    line-height: 1.4;
}
.plugin-card p { margin: 0; font-size: 0.875rem; color: var(--of-muted); }

.plugin-more {
    margin-top: 28px;
    padding: 18px 20px;
    background: #fff;
    border: 1px dashed var(--of-border);
    border-radius: 12px;
    font-size: 0.875rem;
    color: var(--of-muted);
    text-align: center;
}

.bullets {
    margin: 24px 0 0;
    padding-left: 1.2em;
    color: var(--of-muted);
    font-size: 0.9375rem;
}
.bullets li { margin-bottom: 8px; }

.cta-bar {
    margin: 40px 0 24px;
    padding: 24px;
    text-align: center;
    background: linear-gradient(135deg, #1e40af, var(--of-primary));
    border-radius: 14px;
    color: #fff;
}
.cta-bar h3 { margin: 0 0 8px; font-size: 1.15rem; }
.cta-bar p { margin: 0 0 16px; opacity: 0.9; font-size: 0.875rem; }
.cta-bar a {
    display: inline-block;
    padding: 10px 22px;
    background: #fff;
    color: var(--of-primary) !important;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
}
.cta-bar a:hover { text-decoration: none; filter: brightness(0.98); }

.site-footer {
    padding: 28px 24px;
    text-align: center;
    font-size: 0.8125rem;
    color: var(--of-muted);
    border-top: 1px solid var(--of-border);
    background: #fff;
}
.site-footer__company {
    margin-bottom: 6px;
    font-size: 0.8125rem;
    color: var(--of-text);
}
.site-footer__beian {
    display: inline-block;
    color: var(--of-muted) !important;
    text-decoration: none;
}
.site-footer__beian:hover {
    color: var(--of-primary) !important;
    text-decoration: underline;
}
.site-footer__nav {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--of-border);
}
.site-footer__nav a {
    color: var(--of-primary);
}