:root {
    --article-primary: #2563eb;
    --article-primary-dark: #1d4ed8;
    --article-navy: #0f172a;
    --article-text: #334155;
    --article-muted: #64748b;
    --article-line: #e2e8f0;
    --article-bg: #f8fafc;
    --article-card: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    color: var(--article-text);
    background: var(--article-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.75;
}
a { color: var(--article-primary); }
img { max-width: 100%; height: auto; }
.article-container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.screen-reader-text {
    position: absolute !important;
    width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.screen-reader-text:focus {
    z-index: 100000; top: 8px; left: 8px; width: auto; height: auto;
    padding: 10px 16px; clip: auto; background: #fff; color: #111827;
}

.article-site-header {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(255,255,255,.96); border-bottom: 1px solid var(--article-line);
    backdrop-filter: blur(12px);
}
.article-header-inner { min-height: 76px; display: flex; align-items: center; gap: 28px; }
.article-brand { display: flex; align-items: center; gap: 11px; color: var(--article-navy); text-decoration: none; margin-right: auto; }
.article-brand-logo { position: relative; display: grid; width: 46px; height: 46px; flex: 0 0 46px; place-items: center; overflow: hidden; border-radius: 10px; color: #fff; background: linear-gradient(135deg, #3b82f6, #1d4ed8); font-size: 18px; font-weight: 900; }
.article-brand-logo img { width: 100%; height: 100%; object-fit: cover; }
.article-brand-logo > span { line-height: 1; }
.article-brand-logo > span[hidden] { display: none; }
.article-brand > span:last-child { display: flex; flex-direction: column; line-height: 1.3; }
.article-brand strong { font-size: 17px; }
.article-brand small { color: var(--article-muted); font-size: 11px; margin-top: 3px; }
.article-main-nav { display: flex; align-items: center; gap: 7px; }
.article-main-nav a { color: #334155; text-decoration: none; font-size: 14px; font-weight: 600; padding: 8px 11px; border-radius: 18px; }
.article-main-nav a:hover, .article-main-nav a:focus { color: var(--article-primary); background: #eff6ff; }
.article-header-phone { color: #fff; background: var(--article-primary); text-decoration: none; font-weight: 700; padding: 9px 15px; border-radius: 22px; white-space: nowrap; }

.article-main { min-height: 65vh; }
.article-archive-hero {
    padding: 42px 0 38px; color: #fff;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 58%, #2563eb 100%);
}
.article-archive-hero.compact { padding: 36px 0 32px; }
.article-archive-hero h1 { max-width: 850px; margin: 12px 0 8px; font-size: clamp(30px, 3.5vw, 42px); line-height: 1.2; color: #fff; }
.article-archive-hero p, .archive-description { max-width: 780px; margin: 0; color: #dbeafe; font-size: 17px; }
.article-hero-eyebrow { margin-top: 14px; color: #93c5fd; font-size: 11px; font-weight: 800; letter-spacing: .16em; }
.article-hero-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.article-hero-badges span { padding: 6px 11px; border: 1px solid rgba(191, 219, 254, .24); border-radius: 999px; color: #e0ecff; background: rgba(255, 255, 255, .08); font-size: 12px; line-height: 1.3; }

.article-breadcrumbs { padding-top: 20px; font-size: 13px; color: var(--article-muted); }
.article-archive-hero .article-breadcrumbs { padding-top: 0; color: #bfdbfe; }
.article-breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.article-breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; opacity: .65; }
.article-breadcrumbs a { color: inherit; text-decoration: none; }
.article-breadcrumbs a:hover { text-decoration: underline; }

.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 290px; gap: 26px; align-items: start; padding-block: 32px 50px; }
.article-list { display: grid; gap: 16px; min-width: 0; }
.article-card {
    display: grid; grid-template-columns: 230px minmax(0, 1fr); min-height: 184px;
    overflow: hidden; background: var(--article-card); border: 1px solid var(--article-line); border-radius: 16px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, .055); transition: transform .2s ease, box-shadow .2s ease;
}
.article-card:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(15, 23, 42, .09); }
.article-card-image { display: block; min-height: 184px; background: #eef4ff; overflow: hidden; }
.article-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.article-card:hover .article-card-image img { transform: scale(1.025); }
.article-card-placeholder { display: flex; width: 100%; height: 100%; min-height: 184px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; color: #1d4ed8; font-weight: 800; background: linear-gradient(145deg, #eff6ff, #dbeafe); }
.article-card-placeholder > span { font-size: 34px; }
.article-card-placeholder small { font-size: 12px; letter-spacing: .08em; }
.article-card.no-thumbnail { grid-template-columns: 94px minmax(0, 1fr); min-height: 150px; }
.article-card.no-thumbnail .article-card-image,
.article-card.no-thumbnail .article-card-placeholder { min-height: 150px; }
.article-card.no-thumbnail .article-card-placeholder > span { font-size: 28px; }
.article-card-body { padding: 19px 22px; display: flex; flex-direction: column; align-items: flex-start; }
.article-card-meta { display: flex; flex-wrap: wrap; gap: 12px; color: var(--article-muted); font-size: 12px; }
.article-card-meta a { color: var(--article-primary); font-weight: 700; text-decoration: none; }
.article-card h2 { margin: 7px 0 7px; font-size: 21px; line-height: 1.38; }
.article-card h2 a { color: var(--article-navy); text-decoration: none; }
.article-card h2 a:hover { color: var(--article-primary); }
.article-card p { margin: 0 0 13px; color: var(--article-muted); font-size: 14px; }
.article-read-more { margin-top: auto; font-weight: 700; font-size: 14px; text-decoration: none; }

.article-sidebar { position: sticky; top: 98px; display: grid; gap: 18px; }
.sidebar-widget { padding: 22px; background: #fff; border: 1px solid var(--article-line); border-radius: 14px; }
.sidebar-widget h2 { margin: 0 0 14px; color: var(--article-navy); font-size: 18px; }
.sidebar-widget ul { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.sidebar-widget li { display: flex; justify-content: space-between; gap: 8px; color: var(--article-muted); font-size: 14px; border-bottom: 1px dashed #e5e7eb; padding-bottom: 9px; }
.sidebar-widget li:last-child { border: 0; padding-bottom: 0; }
.sidebar-widget li a { color: var(--article-text); text-decoration: none; }
.sidebar-widget li a:hover { color: var(--article-primary); }
.sidebar-search form { display: flex; }
.sidebar-search label { flex: 1; }
.sidebar-search input[type="search"] { width: 100%; height: 42px; padding: 0 12px; border: 1px solid #cbd5e1; border-radius: 8px 0 0 8px; font: inherit; }
.sidebar-search input[type="submit"] { border: 0; padding: 0 14px; color: #fff; background: var(--article-primary); border-radius: 0 8px 8px 0; cursor: pointer; }
.sidebar-cta { color: #fff; background: linear-gradient(135deg, #2563eb, #1e40af); border: 0; }
.sidebar-cta strong { display: block; font-size: 20px; }
.sidebar-cta p { color: #dbeafe; font-size: 14px; }
.sidebar-cta a { display: inline-block; color: #1e40af; background: #fff; border-radius: 20px; padding: 7px 13px; font-weight: 800; text-decoration: none; }

.article-single-layout { grid-template-columns: minmax(0, 1fr) 300px; padding-top: 22px; }
.article-single { min-width: 0; padding: clamp(24px, 4vw, 46px); background: #fff; border: 1px solid var(--article-line); border-radius: 18px; box-shadow: 0 10px 32px rgba(15,23,42,.055); }
.article-single-header { padding-bottom: 25px; border-bottom: 1px solid var(--article-line); }
.article-category { display: inline-block; margin-bottom: 12px; padding: 4px 10px; color: #1d4ed8; background: #dbeafe; border-radius: 16px; font-size: 13px; font-weight: 700; text-decoration: none; }
.article-single h1 { margin: 0; color: var(--article-navy); font-size: clamp(30px, 4.5vw, 46px); line-height: 1.25; letter-spacing: -.02em; }
.article-single-meta { display: flex; flex-wrap: wrap; gap: 14px 22px; margin-top: 17px; color: var(--article-muted); font-size: 13px; }
.plan-details { display: flex; flex-wrap: wrap; gap: 8px 18px; color: #5d6470; font-size: 13px; }
.plan-details strong { color: #334155; }
.plan-details-card { margin: -2px 0 10px; padding: 9px 11px; border-radius: 10px; background: #f4f7fb; }
.plan-details-single { margin: 18px 0 0; padding: 13px 15px; border: 1px solid var(--article-line); border-radius: 12px; background: #f8fafc; }
.article-featured-image { margin: 28px 0; }
.article-featured-image img { display: block; width: 100%; max-height: 520px; object-fit: cover; border-radius: 13px; }
.article-content { color: #334155; font-size: 17px; line-height: 1.95; overflow-wrap: anywhere; }
.article-content h2 { margin: 2.1em 0 .7em; padding-left: 13px; color: var(--article-navy); border-left: 4px solid var(--article-primary); font-size: 27px; line-height: 1.4; }
.article-content h3 { margin: 1.8em 0 .6em; color: var(--article-navy); font-size: 21px; }
.article-content p { margin: 0 0 1.25em; }
.article-content a { text-underline-offset: 3px; }
.article-content blockquote { margin: 1.5em 0; padding: 18px 22px; color: #475569; background: #f1f5f9; border-left: 4px solid #60a5fa; }
.article-content ul, .article-content ol { margin: 0 0 1.4em; padding-left: 1.5em; }
.article-content li { margin-bottom: .45em; }
.article-content img { border-radius: 10px; }
.article-content table { width: 100%; margin: 1.5em 0; border-collapse: collapse; font-size: 15px; }
.article-content th, .article-content td { padding: 10px 12px; border: 1px solid #dbe2ea; text-align: left; }
.article-content th { background: #eff6ff; color: var(--article-navy); }
.article-tags { margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--article-line); font-size: 14px; }
.article-tags a { display: inline-block; margin: 3px 5px; padding: 4px 9px; color: #475569; background: #f1f5f9; border-radius: 15px; text-decoration: none; }
.article-contact-cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 30px; padding: 22px 24px; color: #fff; background: linear-gradient(135deg, #2563eb, #1e40af); border-radius: 14px; }
.article-contact-cta strong { display: block; font-size: 21px; }
.article-contact-cta p { margin: 4px 0 0; color: #dbeafe; font-size: 14px; }
.article-contact-cta a { flex: none; color: #1e40af; background: #fff; border-radius: 22px; padding: 9px 15px; font-weight: 800; text-decoration: none; }
.related-articles { margin-top: 36px; }
.related-articles h2 { color: var(--article-navy); font-size: 24px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.related-grid a { display: flex; flex-direction: column; padding: 15px; color: var(--article-navy); background: #f8fafc; border: 1px solid var(--article-line); border-radius: 10px; text-decoration: none; }
.related-grid span { color: var(--article-muted); font-size: 11px; }
.related-grid strong { margin-top: 5px; font-size: 14px; line-height: 1.5; }

.navigation.pagination { margin-top: 12px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 7px; }
.page-numbers { display: grid; min-width: 38px; height: 38px; padding: 0 10px; place-items: center; color: #334155; background: #fff; border: 1px solid var(--article-line); border-radius: 8px; text-decoration: none; }
.page-numbers.current, .page-numbers:hover { color: #fff; background: var(--article-primary); border-color: var(--article-primary); }
.article-empty { padding: 50px 24px; text-align: center; background: #fff; border: 1px solid var(--article-line); border-radius: 14px; }
.standard-page { padding-block: 40px 60px; }
.standard-page article { padding: clamp(24px, 5vw, 50px); background: #fff; border-radius: 18px; }
.standard-page h1 { margin-top: 0; color: var(--article-navy); font-size: 40px; }
.error-404 { padding: 90px 20px; text-align: center; }
.error-404 > span { color: #bfdbfe; font-size: clamp(90px, 16vw, 180px); font-weight: 900; line-height: 1; }
.error-404 h1 { margin: 5px 0; color: var(--article-navy); font-size: 36px; }
.error-404 div { display: flex; justify-content: center; gap: 10px; margin-top: 24px; }
.error-404 a { padding: 9px 15px; color: #fff; background: var(--article-primary); border-radius: 8px; text-decoration: none; }

.article-site-footer { color: #cbd5e1; background: #0f172a; }
.article-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 45px; padding-block: 45px; }
.article-footer-grid strong { display: block; margin-bottom: 10px; color: #fff; }
.article-footer-grid p { max-width: 480px; margin: 0; }
.article-footer-grid a, .article-footer-grid span { display: block; margin-top: 5px; color: #cbd5e1; text-decoration: none; }
.article-footer-grid a:hover { color: #fff; }
.article-footer-bottom { padding: 14px 20px; text-align: center; color: #94a3b8; border-top: 1px solid #1e293b; font-size: 12px; }

@media (max-width: 960px) {
    .article-main-nav { display: none; }
    .article-layout, .article-single-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
    .sidebar-cta { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
    .article-container { width: min(100% - 28px, 1180px); }
    .article-header-inner { min-height: 66px; gap: 12px; }
    .article-brand-logo { width: 40px; height: 40px; flex-basis: 40px; }
    .article-brand small { display: none; }
    .article-header-phone { padding: 7px 10px; font-size: 12px; }
    .article-archive-hero { padding: 36px 0 32px; }
    .article-archive-hero h1 { font-size: 31px; }
    .article-archive-hero p { font-size: 15px; }
    .article-hero-eyebrow { margin-top: 10px; }
    .article-hero-badges { margin-top: 15px; }
    .article-hero-badges span { padding: 5px 8px; font-size: 10px; }
    .article-layout { padding-block: 24px 40px; }
    .article-card { grid-template-columns: 106px minmax(0, 1fr); min-height: 148px; border-radius: 13px; }
    .article-card-image, .article-card-placeholder { min-height: 148px; max-height: none; }
    .article-card.no-thumbnail { grid-template-columns: 66px minmax(0, 1fr); min-height: 138px; }
    .article-card.no-thumbnail .article-card-image,
    .article-card.no-thumbnail .article-card-placeholder { min-height: 138px; }
    .article-card-placeholder > span,
    .article-card.no-thumbnail .article-card-placeholder > span { font-size: 23px; }
    .article-card-placeholder small { display: none; }
    .article-card-body { padding: 14px 13px; }
    .article-card h2 { margin-top: 5px; font-size: 18px; }
    .article-card p { display: -webkit-box; margin-bottom: 8px; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 12px; }
    .article-card-meta { gap: 7px; font-size: 11px; }
    .plan-details-card { gap: 4px 9px; margin-bottom: 7px; padding: 6px 8px; font-size: 11px; }
    .article-sidebar { grid-template-columns: 1fr; }
    .article-single { padding: 22px 18px; border-radius: 12px; }
    .article-single h1 { font-size: 31px; }
    .article-content { font-size: 16px; }
    .article-content h2 { font-size: 23px; }
    .article-contact-cta { align-items: flex-start; flex-direction: column; }
    .related-grid { grid-template-columns: 1fr; }
    .article-footer-grid { grid-template-columns: 1fr; gap: 25px; padding-block: 34px; }
}