body.tws-gsites{background:#f5f5f5;color:#222;font-family:Arial,"Noto Sans SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.58;margin:0} .tws-wrap{max-width:1120px;margin:0 auto;background:#fff;min-height:100vh;border-left:1px solid #d8d8d8;border-right:1px solid #d8d8d8}.tws-header{display:flex;justify-content:space-between;gap:20px;padding:18px 22px 14px;border-bottom:1px solid #ddd;background:#fff}.tws-site-title{font-size:26px;color:#1155cc;text-decoration:none;font-weight:700}.tws-tagline{color:#666;margin-top:4px}.tws-search{display:flex;gap:6px;align-items:center}.tws-search input{border:1px solid #bbb;padding:7px 9px;width:220px}.tws-search button{border:1px solid #888;background:#eee;padding:7px 12px}.tws-topnav{padding:7px 18px;border-bottom:1px solid #ccc;background:#e9e9e9}.tws-topnav a{display:inline-block;margin:4px 13px 4px 0;color:#1155cc;text-decoration:underline}.tws-grid{display:grid;grid-template-columns:245px 1fr;gap:0}.tws-sidebar{background:#f7f7f7;border-right:1px solid #ddd;padding:18px 16px}.tws-sidebar h3{font-size:14px;margin:18px 0 6px;border-bottom:1px solid #ddd;padding-bottom:4px}.tws-sidebar ul{list-style:none;margin:0;padding:0}.tws-sidebar li{margin:7px 0}.tws-sidebar a,.tws-main a{color:#1155cc;text-decoration:underline}.tws-main{padding:24px 34px;max-width:780px}.tws-main h1{font-size:28px;line-height:1.25;margin:0 0 14px;color:#333;font-weight:500}.tws-main h2{font-size:20px;margin:28px 0 10px;color:#333;border-bottom:1px solid #ddd;padding-bottom:5px;font-weight:500}.tws-main h3{font-size:16px;margin:18px 0 8px;color:#333}.tws-main p{margin:0 0 13px}.tws-main table{border-collapse:collapse;width:100%;margin:16px 0;background:#fff}.tws-main th,.tws-main td{border:1px solid #ccc;padding:8px 9px;vertical-align:top}.tws-main th{background:#eee;font-weight:700}.tws-main img{max-width:100%;height:auto;border:1px solid #ddd;padding:3px;background:#fff}.tws-main ul,.tws-main ol{padding-left:24px}.tws-meta{color:#777;margin:0 0 18px;font-size:13px}.tws-card{border-bottom:1px solid #ddd;padding:14px 0}.tws-card h2{border:0;margin:0 0 6px;font-size:19px}.tws-excerpt{color:#444}.tws-related{margin-top:34px;border-top:2px solid #ddd;background:#fafafa;padding:14px 16px}.tws-related ul{columns:2}.tws-cta{display:inline-block;background:#1155cc;color:#fff!important;text-decoration:none!important;padding:9px 14px;margin-top:8px}.tws-footer{border-top:1px solid #ddd;background:#eee;color:#666;padding:18px 22px;margin-top:20px}@media(max-width:800px){.tws-header{display:block}.tws-search{margin-top:12px}.tws-grid{display:block}.tws-sidebar{border-right:0;border-bottom:1px solid #ddd}.tws-main{padding:20px 16px;max-width:none}.tws-related ul{columns:1}}
/* Final blog rescue polish: old Google Sites readability. */
body.tws-blog-layout { background:#e9e9e9; color:#222; font:15px/1.72 Arial, Helvetica, sans-serif; }
.tws-wrap { max-width:1160px; margin:18px auto; background:#fff; border:1px solid #b8b8b8; box-shadow:0 1px 2px rgba(0,0,0,.12); }
.tws-header { padding:18px 22px 12px; border-bottom:1px solid #cfcfcf; background:linear-gradient(#fdfdfd,#f1f1f1); }
.tws-header h1, .tws-site-title { margin:0 0 6px; font-size:24px; font-weight:normal; color:#333; }
.tws-header p { margin:0; color:#555; }
.tws-topnav { padding:7px 18px; border-bottom:1px solid #d6d6d6; background:#f7f7f7; font-size:13px; }
.tws-topnav a, .tws-main a, .tws-sidebar a { color:#0645ad; text-decoration:underline; }
.tws-content { display:grid; grid-template-columns:245px minmax(0,1fr); gap:0; }
.tws-sidebar { background:#f5f5f5; border-right:1px solid #d6d6d6; padding:16px 14px; font-size:13px; }
.tws-sidebar h2, .tws-sidebar h3 { font-size:14px; margin:14px 0 6px; color:#333; border-bottom:1px solid #ddd; padding-bottom:3px; }
.tws-sidebar ul { margin:0 0 12px 16px; padding:0; }
.tws-sidebar li { margin:4px 0; }
.tws-main { max-width:820px; padding:22px 30px 38px; }
.tws-main h1 { font-size:26px; line-height:1.32; font-weight:normal; margin:0 0 16px; color:#222; }
.tws-main h2 { font-size:21px; margin:30px 0 10px; border-bottom:1px solid #ddd; padding-bottom:4px; font-weight:normal; }
.tws-main h3 { font-size:17px; margin:22px 0 8px; color:#333; }
.tws-main p { margin:0 0 14px; }
.tws-main img { max-width:100%; height:auto; border:1px solid #ddd; background:#fff; padding:3px; }
.tws-main table { width:100%; border-collapse:collapse; margin:16px 0; display:block; overflow-x:auto; }
.tws-main th, .tws-main td { border:1px solid #cfcfcf; padding:8px 10px; vertical-align:top; }
.tws-main th { background:#f1f1f1; }
.tws-reading-path { margin:0 0 18px; padding:9px 10px; border:1px solid #d4d4d4; background:#f8f8f8; font-size:13px; line-height:1.6; }
.tws-reading-path strong { color:#333; margin-right:6px; }
.tws-reading-path a { margin:0 5px; }
.tws-sep { color:#999; }
.tws-related, .tws-topic-directory { margin-top:28px; padding:14px 16px; border:1px solid #d3d3d3; background:#fafafa; }
.tws-related h2, .tws-topic-directory h2 { margin-top:0; font-size:18px; border-bottom:1px solid #ddd; }
.tws-topic-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px; }
.tws-topic-card { display:block; border:1px solid #ddd; background:#fff; padding:10px; text-decoration:none !important; color:#222 !important; }
.tws-topic-card b { display:block; color:#0645ad; text-decoration:underline; margin-bottom:4px; }
.tws-topic-card span { display:block; color:#555; font-size:13px; line-height:1.55; }
.tws-post-list article { padding:16px 0; border-bottom:1px solid #ddd; }
.tws-post-list h2 { margin:0 0 8px; font-size:20px; border:0; padding:0; }
.tws-meta { color:#666; font-size:12px; margin-bottom:8px; }
@media (max-width: 780px) { .tws-wrap{margin:0;border-left:0;border-right:0}.tws-content{display:block}.tws-sidebar{border-right:0;border-bottom:1px solid #d6d6d6}.tws-main{max-width:none;padding:18px 16px 30px}.tws-topic-grid{grid-template-columns:1fr}.tws-main h1{font-size:23px} }
.tws-article-content{display:block;}
.tws-article-content > :first-child{margin-top:0;}

/* Mobile usability: show article/index content before the directory sidebar. */
@media (max-width: 780px) {
  .tws-content { display:flex; flex-direction:column; }
  .tws-main { order:1; }
  .tws-sidebar { order:2; }
  .tws-header { padding:22px 18px 16px; }
  .tws-header h1, .tws-site-title { font-size:30px; line-height:1.25; }
  .tws-topnav { padding:12px 18px; line-height:1.9; }
  .tws-reading-path { font-size:14px; }
  .tws-post-list h2 { font-size:20px; line-height:1.35; }
}
/* Mobile final: actual layout wrapper is .tws-grid. */
@media (max-width: 780px) {
  .tws-grid { display:flex !important; flex-direction:column !important; }
  .tws-grid > .tws-main { order:1 !important; }
  .tws-grid > .tws-sidebar { order:2 !important; }
}
.tws-tutorial-list{margin:22px 0;padding:14px 16px;border:1px solid #d3d3d3;background:#fafafa}.tws-tutorial-list h2{margin:0 0 8px;font-size:18px;border-bottom:1px solid #ddd;padding-bottom:4px}.tws-tutorial-list p{margin:0 0 10px;color:#555}.tws-tutorial-list ul{margin:0;padding-left:20px;columns:2}.tws-tutorial-list li{margin:6px 0}.tws-tutorial-list a{color:#0645ad;text-decoration:underline}@media (max-width:780px){.tws-tutorial-list ul{columns:1}}

/* 2026-06-02 visual refinement: restrained Chinese SEO/GEO research library. */
:root {
  --tws-ink: #1f2933;
  --tws-muted: #5f6b7a;
  --tws-line: #d8dee7;
  --tws-soft-line: #e7ebf0;
  --tws-paper: #ffffff;
  --tws-panel: #f6f8fb;
  --tws-page: #eef2f6;
  --tws-blue: #0b57b7;
  --tws-blue-hover: #08489a;
}

body.tws-gsites {
  background: var(--tws-page);
  color: var(--tws-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.74;
}

.tws-wrap {
  max-width: 1180px;
  margin: 20px auto;
  border: 1px solid #cdd5df;
  box-shadow: 0 10px 34px rgba(15, 23, 42, .08);
}

.tws-header {
  align-items: flex-start;
  padding: 22px 26px 16px;
  background: linear-gradient(#ffffff, #f7f9fc);
  border-bottom-color: var(--tws-line);
}

.tws-site-title {
  color: #172033;
  font-size: 25px;
  font-weight: 650;
  text-decoration: none;
}

.tws-site-title:hover {
  color: var(--tws-blue);
}

.tws-tagline {
  color: var(--tws-muted);
  font-size: 13px;
  margin-top: 2px;
}

.tws-search input {
  width: 245px;
  border: 1px solid #b8c2d0;
  background: #fff;
  color: var(--tws-ink);
}

.tws-search input:focus {
  outline: 2px solid rgba(11, 87, 183, .18);
  border-color: var(--tws-blue);
}

.tws-search button {
  background: #172033;
  border-color: #172033;
  color: #fff;
  cursor: pointer;
}

.tws-search button:hover {
  background: var(--tws-blue);
  border-color: var(--tws-blue);
}

.tws-topnav {
  padding: 8px 22px;
  background: #fbfcfe;
  border-bottom-color: var(--tws-line);
}

.tws-topnav a {
  margin-right: 17px;
  color: var(--tws-blue);
  text-underline-offset: 3px;
}

.tws-topnav a:hover,
.tws-sidebar a:hover,
.tws-main a:hover {
  color: var(--tws-blue-hover);
  text-decoration-thickness: 2px;
}

.tws-grid {
  grid-template-columns: 260px minmax(0, 1fr);
}

.tws-sidebar {
  background: var(--tws-panel);
  border-right-color: var(--tws-line);
  padding: 20px 18px;
}

.tws-sidebar h3 {
  margin: 18px 0 8px;
  padding-bottom: 5px;
  color: #253044;
  font-size: 13px;
  font-weight: 700;
  border-bottom-color: var(--tws-line);
}

.tws-sidebar ul {
  margin-left: 0;
}

.tws-sidebar li {
  margin: 5px 0;
  line-height: 1.5;
}

.tws-sidebar a {
  color: #255ea8;
  text-underline-offset: 2px;
}

.tws-main {
  max-width: 850px;
  padding: 30px 42px 46px;
}

.tws-main h1 {
  color: #111827;
  font-size: 29px;
  line-height: 1.28;
  font-weight: 650;
  margin-bottom: 18px;
}

.tws-main h2 {
  color: #1f2937;
  font-size: 21px;
  line-height: 1.38;
  font-weight: 650;
  margin-top: 34px;
  border-bottom-color: var(--tws-line);
}

.tws-main h3 {
  color: #263244;
  font-size: 17px;
  font-weight: 650;
}

.tws-main p,
.tws-excerpt {
  color: #2f3b4a;
}

.tws-meta {
  color: var(--tws-muted);
}

.tws-reading-path,
.tws-related,
.tws-topic-directory,
.tws-tutorial-list {
  background: #fbfcfe;
  border-color: var(--tws-line);
}

.tws-reading-path {
  padding: 10px 12px;
}

.tws-topic-grid {
  gap: 12px;
}

.tws-topic-card {
  border-color: var(--tws-soft-line);
  background: var(--tws-paper);
  transition: border-color .15s ease, background-color .15s ease;
}

.tws-topic-card:hover {
  border-color: #b9c8da;
  background: #f8fbff;
}

.tws-topic-card b {
  color: var(--tws-blue);
  text-underline-offset: 3px;
}

.tws-post-list article,
.tws-card {
  border-bottom-color: var(--tws-soft-line);
  padding: 18px 0;
}

.tws-post-list h2 a,
.tws-card h2 a {
  text-underline-offset: 3px;
}

.tws-footer {
  background: #f6f8fb;
  border-top-color: var(--tws-line);
  color: var(--tws-muted);
}

@media (max-width: 780px) {
  body.tws-gsites {
    background: #fff;
    font-size: 15px;
    line-height: 1.7;
  }

  .tws-wrap {
    margin: 0;
    border: 0;
    box-shadow: none;
  }

  .tws-header {
    padding: 20px 16px 14px;
  }

  .tws-site-title,
  .tws-header h1 {
    font-size: 27px;
  }

  .tws-search {
    align-items: stretch;
  }

  .tws-search input {
    width: 100%;
    min-width: 0;
  }

  .tws-topnav {
    padding: 10px 16px;
  }

  .tws-topnav a {
    margin-right: 14px;
  }

  .tws-main {
    padding: 22px 17px 34px;
  }

  .tws-main h1 {
    font-size: 24px;
  }

  .tws-sidebar {
    padding: 18px 17px;
  }

  .tws-reading-path,
  .tws-related,
  .tws-topic-directory,
  .tws-tutorial-list {
    margin-top: 22px;
    padding: 13px 14px;
  }
}

.tws-home-intro {
  margin: 0 0 20px;
  padding: 0 0 4px;
}

.tws-home-intro p {
  margin: 0 0 10px;
  color: #425062;
  max-width: 60em;
}

.tws-list-heading {
  margin: 30px 0 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--tws-line);
}

.tws-list-heading h2 {
  margin: 0 0 6px;
  border: 0;
  padding: 0;
  font-size: 18px;
  line-height: 1.4;
  color: #243246;
}

.tws-list-heading p {
  margin: 0;
  color: var(--tws-muted);
  font-size: 13px;
  line-height: 1.65;
}

.tws-post-list {
  margin-top: 6px;
}

.tws-card:first-of-type {
  padding-top: 14px;
}

.tws-card h2 {
  line-height: 1.4;
}

.tws-excerpt {
  max-width: 58em;
}

@media (max-width: 780px) {
  .tws-home-intro {
    margin-bottom: 18px;
  }

  .tws-home-intro p {
    margin-bottom: 9px;
  }

  .tws-list-heading {
    margin: 24px 0 8px;
    padding-bottom: 10px;
  }

  .tws-list-heading h2 {
    font-size: 17px;
  }

  .tws-list-heading p {
    font-size: 13px;
  }
}

.tws-research-hub {
  margin: 28px 0 30px;
  padding: 16px 16px 18px;
  border: 1px solid var(--tws-line);
  background: #fbfcfe;
}

.tws-research-hub h2 {
  margin: 0 0 8px;
  padding: 0 0 7px;
  border-bottom: 1px solid var(--tws-line);
  font-size: 19px;
}

.tws-hub-note {
  margin: 0 0 14px;
  color: var(--tws-muted);
  font-size: 13px;
  line-height: 1.65;
}

.tws-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.tws-hub-section {
  border: 1px solid var(--tws-soft-line);
  background: #fff;
  padding: 12px 13px;
}

.tws-hub-section h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.4;
}

.tws-hub-section p {
  margin: 0 0 9px;
  color: #425062;
  font-size: 13px;
  line-height: 1.65;
}

.tws-hub-section ul {
  margin: 0;
  padding-left: 18px;
}

.tws-hub-section li {
  margin: 4px 0;
  line-height: 1.5;
}

@media (max-width: 780px) {
  .tws-research-hub {
    margin: 24px 0;
    padding: 14px;
  }

  .tws-hub-grid {
    grid-template-columns: 1fr;
  }
}

/* Hide legacy Elementor popup markup that is printed after the custom research-library footer. */
.elementor-location-popup {
  display: none !important;
}