/* ============================================
   Shunshi Article Template - article.css
   Version 1.0
   Usage: <link rel="stylesheet" href="/css/article.css">
   ============================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary: #1a4d8c;
  --color-primary-dark: #0f2f5a;
  --color-primary-light: #e8f0fb;
  --color-accent: #d0460b;
  --color-text: #1c1c1e;
  --color-text-muted: #5a5a6a;
  --color-text-light: #8a8a9a;
  --color-border: #e0e4ec;
  --color-bg: #ffffff;
  --color-bg-soft: #f7f8fc;
  --color-bg-highlight: #f0f4fb;
  --color-success: #1a6e3c;
  --color-success-bg: #eaf5ef;
  --font-body: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-ui: 'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --max-width: 860px;
  --sidebar-width: 260px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 4px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.04);
      --navy:    #0c1d30;
    --steel:   #1b3a5c;
    --mid:     #2563a0;
    --light-mid: #3b7ec8;
    --accent:  #d97706;
    --accent2: #b45309;
    --light-bg:#f4f2ee;
    --card:    #ffffff;
    --text:    #1c1c1c;
    --muted:   #5a5a5a;
    --border:  #ddd8cf;
    --green:   #166534;
    --red:     #991b1b;
    --serif:   'Playfair Display', Georgia, serif;
    --sans:    'Source Sans 3', sans-serif;
    --max:     1120px;
}
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  body { font-family: var(--sans); color: var(--text); background: var(--light-bg); line-height: 1.75; font-size: 16px; }
/* NAV */
  .site-nav {
    background: var(--navy); padding: 0 24px; border-bottom: 2px solid var(--accent);
    position: sticky; top: 0; z-index: 100;
  }
  .nav-inner { max-width: var(--max); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 56px; }
  .logo { color: #fff; font-family: var(--serif); font-size: 1.2rem; font-weight: 700; text-decoration: none; letter-spacing: 0.02em; display: flex; align-items: center; gap: 10px; }
  .logo-tag { font-size: 0.62rem; background: var(--accent); color: var(--navy); padding: 2px 7px; border-radius: 3px; font-family: var(--sans); font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; }
  .nav-links { display: flex; align-items: center; gap: 4px; }
  .nav-links a { color: rgba(255,255,255,0.72); text-decoration: none; font-size: 0.875rem; padding: 6px 12px; border-radius: 3px; transition: color 0.15s, background 0.15s; }
  .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
  .nav-cta { background: var(--accent); color: var(--navy) !important; font-weight: 600 !important; border-radius: 4px !important; }
  .nav-cta:hover { background: var(--accent2) !important; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Google Fonts Import ---------- */
/* Add to <head>:
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600&family=Source+Serif+4:ital,wght@0,400;0,600;1,400&display=swap">
*/

/* ---------- Page Layout ---------- */
.article-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: 48px;
  align-items: start;
  padding: 48px 0 80px;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 32px 0 60px;
  }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-muted);
  padding: 20px 0 0;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 80px;
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

.breadcrumb span.sep {
  color: var(--color-text-light);
}

/* ---------- Article Hero ---------- */
.article-hero {
  padding: 36px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}

.article-category-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.article-hero h1 {
  font-family: var(--font-ui);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.article-hero .article-intro {
  font-size: 18px;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 680px;
  margin-bottom: 24px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--color-text-light);
}

.article-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta .meta-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ---------- Main Article Content ---------- */
.article-main {
  min-width: 0;
}

/* Content blocks — each CMS block rendered here */
.content-block {
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}

.content-block:last-child {
  border-bottom: none;
}

/* ---------- Typography inside content blocks ---------- */
.content-block h2 {
  font-family: var(--font-ui);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  margin-top: 40px;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.content-block h2:first-child {
  margin-top: 0;
}

.content-block h3 {
  font-family: var(--font-ui);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  margin-top: 32px;
  letter-spacing: -0.01em;
}

.content-block p {
  margin-bottom: 18px;
  color: var(--color-text);
}

.content-block p:last-child {
  margin-bottom: 0;
}

.content-block strong {
  font-weight: 600;
  color: var(--color-text);
}

.content-block a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.content-block a:hover {
  color: var(--color-primary-dark);
}

/* ---------- Lists ---------- */
.content-block ul,
.content-block ol {
  margin: 0 0 18px 0;
  padding-left: 0;
  list-style: none;
}

.content-block ul li,
.content-block ol li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--color-text);
}

.content-block ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.content-block ol {
  counter-reset: ol-counter;
}

.content-block ol li {
  counter-increment: ol-counter;
}

.content-block ol li::before {
  content: counter(ol-counter) ".";
  position: absolute;
  left: 0;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

/* ---------- Comparison Table ---------- */
.content-block table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-ui);
  font-size: 14px;
  margin: 24px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.content-block table thead {
  background: var(--color-primary);
}

.content-block table thead th {
  color: #fff;
  font-weight: 600;
  padding: 14px 16px;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.content-block table thead th:first-child {
  width: 32%;
}

.content-block table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}

.content-block table tbody tr:last-child {
  border-bottom: none;
}

.content-block table tbody tr:nth-child(even) {
  background: var(--color-bg-soft);
}

.content-block table tbody tr:hover {
  background: var(--color-bg-highlight);
}

.content-block table tbody td {
  padding: 12px 16px;
  color: var(--color-text);
  vertical-align: top;
  line-height: 1.5;
}

.content-block table tbody td:first-child {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  .content-block table { font-size: 13px; }
  .content-block table thead th,
  .content-block table tbody td { padding: 10px 12px; }
}

/* ---------- Highlight / Callout Box ---------- */
.callout {
  background: var(--color-bg-highlight);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 16px 20px;
  margin: 24px 0;
  font-family: var(--font-ui);
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.callout strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.callout-success {
  background: var(--color-success-bg);
  border-left-color: var(--color-success);
}

.callout-success strong { color: var(--color-success); }

/* ---------- Decision Card (use case block) ---------- */
.decision-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0;
}

@media (max-width: 640px) {
  .decision-grid { grid-template-columns: 1fr; }
}

.decision-card {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.decision-card .card-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.decision-card h4 {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.decision-card ul {
  margin: 0;
}

/* ---------- CTA Section ---------- */
.article-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  text-align: center;
  margin-top: 48px;
}

.article-cta h3 {
  font-family: var(--font-ui);
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
}

.article-cta p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 24px;
  font-family: var(--font-ui);
}

.btn-cta {
  display: inline-block;
  background: #fff;
  color: var(--color-primary);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.btn-cta:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
}

.btn-cta-secondary {
  display: inline-block;
  background: transparent;
  color: rgba(255,255,255,0.9);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 24px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cta-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Sidebar ---------- */
.article-sidebar {
  position: sticky;
  top: 24px;
}

.sidebar-card {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  font-family: var(--font-ui);
}

.sidebar-card h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: 14px;
}

/* Table of Contents */
.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  border-bottom: 1px solid var(--color-border);
}

.toc-list li:last-child { border-bottom: none; }

.toc-list a {
  display: block;
  font-size: 13.5px;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 8px 0;
  line-height: 1.4;
  transition: color 0.15s;
}

.toc-list a:hover { color: var(--color-primary); }

.toc-list a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Related Articles */
.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.related-list li {
  margin-bottom: 12px;
}

.related-list a {
  font-size: 13.5px;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  gap: 8px;
  align-items: flex-start;
  line-height: 1.4;
}

.related-list a::before {
  content: '→';
  color: var(--color-primary);
  font-size: 14px;
  flex-shrink: 0;
  margin-top: 1px;
  display: none;
}

.related-list a:hover { color: var(--color-primary); }

/* Trust badge */
.trust-badge {
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 13px;
  color: var(--color-primary-dark);
  line-height: 1.5;
}

.trust-badge strong {
  display: block;
  font-size: 14px;
  margin-bottom: 4px;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .article-hero h1 { font-size: 24px; }
  .article-hero .article-intro { font-size: 16px; }
  .article-cta { padding: 28px 24px; }
  .content-block h2 { font-size: 20px; }
  .article-page { padding: 0 16px; }
}

<!-- ============================================================
     修复说明：
     1. 所有容器加 max-width:100% + overflow:hidden 防止溢出
     2. toc-links 移动端改为竖排
     3. article-meta-bar 移动端换行
     4. 表格容器强制不超出屏幕
     5. spec-compare / related-guides-grid / checklist 移动端单列
     6. 全局加 box-sizing:border-box 兜底
     将下面这段 <style> 追加到你页面现有样式的最后即可，不需要删原有样式
     ============================================================ -->

<style>
/* ============================================================
   MOBILE OVERFLOW FIX
   追加到原有样式末尾，覆盖修复
   ============================================================ */

/* 全局防溢出兜底 */
*, *::before, *::after {
  box-sizing: border-box;
}
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

/* article-hero 不超宽 */
.article-hero {
  max-width: 100%;
  overflow: hidden;
}

/* meta-bar 移动端竖排 */
.article-meta-bar {
  flex-wrap: wrap;
  word-break: break-word;
}
.meta-sep {
  display: none; /* 移动端隐藏分隔符，避免换行混乱 */
}
@media (max-width: 600px) {
  .article-meta-bar {
    flex-direction: column;
    gap: 3px;
  }
}

/* TOC - 核心修复：移动端竖排，不让链接撑宽 */
.article-toc {
  flex-direction: column;
  gap: 10px;
  max-width: 100%;
  overflow: hidden;
}
.toc-links {
  flex-direction: column;
  gap: 6px;
  width: 100%;
}
.toc-links a {
  display: block;
  white-space: normal;
  word-break: break-word;
}

/* 桌面端恢复横排 */
@media (min-width: 700px) {
  .article-toc {
    flex-direction: row;
    align-items: flex-start;
  }
  .toc-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px 16px;
  }
  .meta-sep {
    display: inline;
  }
}

/* 表格容器：强制不超屏 */
.tbl-wrap,
.zone-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* 表格内文字允许换行 */
.tbl-wrap table,
.zone-table {
  min-width: 500px; /* 保持表格可读性，容器滚动处理溢出 */
  word-break: normal;
}
.tbl-wrap thead th,
.zone-table thead th {
  white-space: nowrap;
}
.tbl-wrap tbody td,
.zone-table tbody td {
  white-space: normal;
  word-break: break-word;
}

/* spec-compare 移动端单列 */
.spec-compare {
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .spec-compare {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

/* checklist 移动端调整 */
@media (max-width: 600px) {
  .checklist-item {
    flex-direction: column;
    gap: 10px;
    padding: 14px;
  }
  .check-num {
    flex-shrink: 0;
  }
}

/* related-guides-grid 移动端单列 */
.related-guides-grid {
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .related-guides-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

/* callout 防溢出 */
.callout {
  max-width: 100%;
  overflow: hidden;
  word-break: break-word;
}

/* h1 移动端字号 */
@media (max-width: 480px) {
  .article-h1 {
    font-size: 22px;
    line-height: 1.25;
  }
  .article-intro {
    font-size: 15px;
  }
}

/* faq 防溢出 */
.faq-item {
  max-width: 100%;
  overflow: hidden;
}
.faq-q {
  word-break: break-word;
}
</style>

