/* 雨竹林学习网 · 单栏目列表页 V3
   仅在 gk/bm/index.html 中加载，绝不修改原首页 assets/css/style.css。
   主题变量继承首页：#07336f / #087dff / #f3f8fc。 */
.lt-page {
  background: linear-gradient(180deg,#f9fcff 0,#f3f8fc 340px,#f3f8fc 100%);
}
.lt-svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.lt-line-icon {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}
.lt-menu-bars,.lt-menu-bars:before,.lt-menu-bars:after {
  display: block;
  position: relative;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.lt-menu-bars:before,.lt-menu-bars:after {
  content: "";
  position: absolute;
  left: 0;
}
.lt-menu-bars:before {
  top: -7px;
}
.lt-menu-bars:after {
  top: 7px;
}
.lt-search-symbol {
  width: 16px;
  height: 16px;
  border: 2px solid #daebff;
  border-radius: 50%;
  position: relative;
  flex: none;
  margin-left: 13px;
}
.lt-search-symbol:after {
  position: absolute;
  content: "";
  width: 8px;
  height: 2px;
  background: #daebff;
  right: -6px;
  bottom: -4px;
  transform: rotate(45deg);
  border-radius: 2px;
}
.lt-header-search input {
  margin-left: 5px;
}
.lt-white-card {
  border: 1px solid #e4edf7;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 7px 26px rgba(19,69,122,.055);
}
.lt-main {
  padding: 0 0 24px;
}
.lt-quick-section {
  padding-top: 16px;
}
.lt-quick-strip {
  display: grid;
  grid-template-columns: repeat(6,minmax(0,1fr));
  gap: 11px;
  padding: 13px;
  background: linear-gradient(112deg,#074182,#1164bc 55%,#087dff);
  border-radius: 14px;
  box-shadow: 0 12px 24px rgba(8,78,153,.14);
}
.lt-quick-item {
  min-height: 64px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px;
  border: 1px solid #ffffff28;
  background: #ffffff14;
  color: white;
  border-radius: 10px;
  transition: background .2s,transform .2s;
  min-width: 0;
}
.lt-quick-item:hover {
  background: #ffffff2c;
  color: #fff;
  transform: translateY(-2px);
}
.lt-quick-icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  flex: none;
  background: #ffffffd9;
  border-radius: 10px;
}
.lt-quick-icon img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}
.lt-quick-item b {
  display: block;
  white-space: nowrap;
  font-size: 13px;
  line-height: 1.4;
}
.lt-quick-item small {
  display: block;
  font-size: 10px;
  color: #d9e9fb;
  margin-top: 2px;
  white-space: nowrap;
}
.lt-crumb {
  margin-top: 16px;
}
.lt-breadcrumb {
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: #68809a;
  font-size: 12px;
  min-height: 45px;
}
.lt-breadcrumb a:hover {
  color: #087dff;
}
.lt-crumb-marker {
  font-weight: 700;
  color: #2868ae;
  background: #eef6ff;
  padding: 4px 10px;
  border-radius: 99px;
}
.lt-separator {
  color: #9db1c8;
}
.lt-breadcrumb [aria-current] {
  color: #0a4386;
  font-weight: 700;
}
.lt-channel-hero {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0,1fr) 334px;
  gap: 26px;
  padding: 26px 28px;
  overflow: hidden;
  position: relative;
  isolation: isolate;
}
.lt-channel-hero:before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(95deg,#fff 7%,#fffffffa 45%,#eff8ffe6 75%,#e2f3ffab),url('../images/hero-mountains-book.webp') right center/auto 190% no-repeat;
  opacity: .98;
}
.lt-channel-copy {
  min-width: 0;
}
.lt-eyebrow {
  display: inline-flex;
  align-items: center;
  color: #075dc4;
  background: #e7f2ff;
  border: 1px solid #d2e7ff;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  margin-bottom: 10px;
}
.lt-channel-copy h1 {
  font-size: 31px;
  line-height: 1.4;
  color: #07336f;
  letter-spacing: .7px;
  font-weight: 800;
}
.lt-channel-copy p {
  font-size: 14px;
  line-height: 1.9;
  max-width: 710px;
  margin-top: 8px;
  color: #536c86;
}
.lt-channel-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 15px;
}
.lt-channel-tags a {
  padding: 5px 13px;
  border-radius: 99px;
  border: 1px solid #d9e8f8;
  background: #ffffffed;
  color: #4b698b;
  font-size: 12px;
}
.lt-channel-tags a:hover {
  background: #087dff;
  border-color: #087dff;
  color: white;
}
.lt-hero-actions {
  display: grid;
  grid-template-columns: repeat(2,minmax(0,1fr));
  gap: 11px;
  align-content: center;
}
.lt-hero-action {
  min-height: 100px;
  border: 1px solid #d9e9f8;
  border-radius: 12px;
  padding: 11px;
  background: #ffffffd9;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  box-shadow: 0 5px 15px #174b8409;
  transition: transform .2s,border-color .2s;
}
.lt-hero-action:hover {
  transform: translateY(-2px);
  border-color: #66b1ff;
}
.lt-hero-action span {
  height: 30px;
  margin-bottom: 2px;
}
.lt-hero-action img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}
.lt-hero-action b {
  color: #174a85;
  font-size: 13px;
}
.lt-hero-action small {
  font-size: 10px;
  color: #7d93a8;
  margin-top: 2px;
}
.lt-mobile-search {
  display: none;
}
.lt-content-grid {
  margin-top: 19px;
  display: grid;
  grid-template-columns: minmax(0,1fr) 320px;
  gap: 21px;
  align-items: start;
}
.lt-main-column {
  min-width: 0;
}
.lt-board {
  padding: 23px 23px 21px;
}
.lt-board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid #e5edf6;
}
.lt-section-eyebrow {
  display: block;
  font-size: 10px;
  color: #8ba8c8;
  letter-spacing: 1.5px;
  font-weight: 800;
}
.lt-board-head h2 {
  font-size: 22px;
  color: #082e67;
  font-weight: 800;
  margin-top: 2px;
}
.lt-board-head p {
  font-size: 12px;
  color: #8094a8;
  margin-top: 4px;
}
.lt-board-indicator {
  flex: none;
  background: #ebf4ff;
  color: #1374d8;
  border: 1px solid #dceafb;
  border-radius: 99px;
  padding: 4px 11px;
  font-size: 11px;
}
.lt-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 17px 0 12px;
}
.lt-filter {
  padding: 6px 13px;
  font-size: 12px;
  border-radius: 99px;
  border: 1px solid #dfeafa;
  background: #f9fcff;
  color: #59728b;
  transition: background .2s,color .2s;
}
.lt-filter:hover,.lt-filter.is-active {
  background: linear-gradient(125deg,#087dff,#075bc4);
  color: white;
  border-color: transparent;
}
.lt-result-note {
  color: #8298aa;
  font-size: 11px;
  margin-bottom: 12px;
}
.lt-feature-article {
  display: grid;
  grid-template-columns: 195px minmax(0,1fr);
  gap: 17px;
  padding: 13px;
  border: 1px solid #d9e9f9;
  background: linear-gradient(120deg,#eff7ff,#ffffff);
  border-radius: 11px;
  min-height: 155px;
  margin-bottom: 13px;
}
.lt-feature-article>img {
  width: 100%;
  height: 100%;
  min-height: 139px;
  object-fit: cover;
  border-radius: 8px;
}
.lt-feature-body {
  padding: 3px 0;
  min-width: 0;
}
.lt-feature-label {
  display: inline-flex;
  background: #e4f1ff;
  color: #0874df;
  border-radius: 99px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
}
.lt-feature-body h3 {
  font-size: 18px;
  line-height: 1.45;
  margin: 8px 0;
  color: #0a3673;
}
.lt-article-open {
  display: inline;
  text-align: left;
  border: 0;
  padding: 0;
  background: none;
  font-weight: inherit;
  font-size: inherit;
  line-height: inherit;
  cursor: pointer;
  color: inherit;
}
.lt-article-open:hover {
  color: #087dff;
}
.lt-feature-body p {
  font-size: 12px;
  color: #6b8299;
  line-height: 1.75;
}
.lt-feature-meta {
  display: block;
  color: #92a4b8;
  font-size: 11px;
  margin-top: 8px;
}
.lt-article-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.lt-article {
  display: grid;
  grid-template-columns: 77px minmax(0,1fr);
  gap: 17px;
  padding: 17px 3px;
  border-bottom: 1px solid #e9eff6;
  min-width: 0;
}
.lt-article:last-child {
  border: 0;
}
.lt-date {
  width: 70px;
  height: 73px;
  background: linear-gradient(135deg,#edf6ff,#fff);
  border: 1px solid #dceafa;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  align-self: start;
  flex: none;
}
.lt-date strong {
  font-size: 25px;
  line-height: 1.1;
  font-weight: 800;
  color: #087dff;
}
.lt-date span {
  font-size: 11px;
  color: #91a3b4;
  margin-top: 3px;
}
.lt-article-content {
  min-width: 0;
}
.lt-article-top {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.lt-article-tag {
  background: #e9f3ff;
  border-radius: 99px;
  padding: 2px 9px;
  font-size: 11px;
  color: #126bd0;
  font-weight: 700;
}
.lt-article-kind {
  font-size: 11px;
  color: #8b9eb1;
}
.lt-article h3 {
  font-size: 17px;
  color: #193c65;
  font-weight: 750;
  line-height: 1.52;
  margin: 0;
}
.lt-article-content>p {
  font-size: 12.5px;
  line-height: 1.8;
  color: #647d96;
  margin-top: 6px;
}
.lt-article-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-size: 11px;
  color: #9aabba;
}
.lt-empty {
  text-align: center;
  background: #f4f9ff;
  padding: 24px;
  border-radius: 11px;
  color: #2e5c89;
}
.lt-empty p {
  margin: 7px 0 12px;
  font-size: 12px;
}
.lt-empty button {
  padding: 7px 16px;
  border-radius: 99px;
  background: #087dff;
  color: #fff;
}
.lt-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin-top: 20px;
  padding-top: 15px;
  border-top: 1px solid #edf2f7;
}
.lt-pagination button {
  font-size: 13px;
  min-width: 39px;
  height: 38px;
  padding: 0 14px;
  background: white;
  border: 1px solid #dfebf7;
  border-radius: 99px;
  color: #68829e;
}
.lt-pagination button:hover,.lt-pagination button.is-current {
  background: linear-gradient(120deg,#087dff,#1262d6);
  color: #fff;
  border-color: #087dff;
}
.lt-pagination button:disabled {
  opacity: .35;
  cursor: default;
}
.lt-guides {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 12px;
  margin-top: 17px;
}
.lt-guide {
  background: white;
  border: 1px solid #e2edf8;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 19px #1b5b9709;
}
.lt-guide:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px #1b5b9718;
}
.lt-guide-icon {
  display: grid;
  place-items: center;
  width: 39px;
  height: 39px;
  background: #edf6ff;
  border-radius: 10px;
  margin-bottom: 11px;
}
.lt-guide-icon img {
  width: 32px;
  height: 32px;
}
.lt-guide h3 {
  font-size: 14px;
  color: #133c6e;
}
.lt-guide p {
  font-size: 11px;
  color: #8194a6;
  margin-top: 5px;
  line-height: 1.6;
}
.lt-guide-more {
  font-size: 11px;
  color: #087dff;
  display: block;
  margin-top: 9px;
}
.lt-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}
.lt-notice {
  padding: 20px;
  border-radius: 12px;
  color: white;
  background: linear-gradient(135deg,#074588,#087dff);
  box-shadow: 0 10px 25px #073f8520;
}
.lt-notice-title {
  display: flex;
  align-items: center;
  gap: 9px;
}
.lt-notice-dot {
  border-radius: 50%;
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  background: #ffffff33;
  border: 1px solid #ffffff55;
  font-family: Georgia,serif;
  font-weight: 800;
}
.lt-notice h2 {
  font-size: 17px;
  color: white;
}
.lt-notice p {
  margin-top: 10px;
  font-size: 12px;
  color: #ddecfc;
  line-height: 1.85;
}
.lt-notice a {
  margin-top: 13px;
  display: inline-flex;
  gap: 5px;
  align-items: center;
  color: white;
  padding: 6px 11px;
  background: #ffffff22;
  border-radius: 99px;
  font-size: 11px;
}
.lt-notice a:hover {
  background: #ffffff40;
}
.lt-side-card {
  padding: 18px 19px;
}
.lt-side-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 11px;
  border-bottom: 1px solid #edf2f8;
  margin-bottom: 13px;
}
.lt-side-heading h2 {
  font-size: 16px;
  color: #103d72;
}
.lt-side-kicker {
  font-size: 10px;
  color: #92a4b5;
}
.lt-subnav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}
.lt-subnav a {
  border-radius: 7px;
  background: #f4f9ff;
  border: 1px solid #e6f0fb;
  font-size: 11px;
  color: #546f8d;
  min-height: 37px;
  padding: 9px 7px;
  text-align: center;
  line-height: 1.5;
}
.lt-subnav a:hover,.lt-subnav a.is-current {
  background: #e4f1ff;
  border-color: #aacfff;
  color: #087dff;
  font-weight: 700;
}
.lt-hot-list {
  list-style: none;
  counter-reset: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding-left: 0;
  margin: 0;
}
.lt-hot-list li {
  display: flex;
  gap: 8px;
  min-width: 0;
  align-items: flex-start;
}
.lt-rank-number {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  flex: none;
  display: grid;
  place-items: center;
  background: #eaf3fd;
  color: #2777c8;
  font-size: 11px;
  font-weight: 800;
}
.lt-hot-list li:nth-child(-n+3) .lt-rank-number {
  color: white;
  background: #087dff;
}
.lt-hot-list .lt-article-open {
  font-size: 12px;
  line-height: 1.6;
  color: #59718a;
}
.lt-hot-list .lt-article-open:hover {
  color: #087dff;
}
.lt-service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}
.lt-service-grid a {
  background: #f3f9ff;
  border: 1px solid #e1edf9;
  border-radius: 9px;
  min-height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 11px;
  color: #566f8c;
}
.lt-service-grid a:hover {
  background: #e5f2ff;
  color: #087dff;
}
.lt-service-grid img {
  width: 27px;
  height: 27px;
  object-fit: contain;
}
.lt-topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.lt-topic-tags a {
  font-size: 11px;
  padding: 5px 10px;
  border: 1px solid #dae9f9;
  background: #f4f9ff;
  border-radius: 99px;
  color: #6a829e;
}
.lt-topic-tags a:hover {
  background: #087dff;
  color: white;
  border-color: #087dff;
}
.lt-brand-card {
  padding: 21px;
  border-radius: 12px;
  background: linear-gradient(132deg,#07356f,#0b6cce);
  color: white;
}
.lt-brand-card>span {
  font-size: 10px;
  color: #c9e4ff;
}
.lt-brand-card h2 {
  color: white;
  font-size: 23px;
  letter-spacing: 2px;
  margin-top: 4px;
}
.lt-brand-card p {
  color: #dcecff;
  font-size: 12px;
  line-height: 1.8;
  margin-top: 8px;
}
.lt-brand-card a {
  display: inline-block;
  margin-top: 13px;
  padding: 8px 15px;
  background: #ffffffed;
  color: #145aa3;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 700;
}
.lt-friend {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 15px 21px;
  margin-top: 22px;
  font-size: 12px;
}
.lt-friend strong {
  color: #0b66c2;
}
.lt-friend a {
  color: #637b95;
}
.lt-friend a:hover {
  color: #087dff;
  text-decoration: underline;
}
.lt-page .site-footer {
  margin-top: 17px;
}
.lt-page .footer-follow .follow-mark {
  display: grid;
  place-items: center;
}
.lt-page .footer-follow .follow-mark img {
  height: 44px;
  width: 44px;
  object-fit: contain;
}
.lt-page .back-to-top {
  font-size: 24px;
  color: white;
}
.lt-preview-dialog {
  max-width: min(520px,calc(100% - 32px));
  border: 1px solid #d2e6fb;
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 21px 70px #001b3a40;
  color: #214365;
}
.lt-preview-dialog::backdrop {
  background: #0b2d57b3;
}
.lt-dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #4980b6;
  font-size: 11px;
}
.lt-dialog-header button {
  font-size: 24px;
  background: none;
  width: 35px;
  height: 35px;
}
.lt-preview-dialog h2 {
  font-size: 21px;
  margin-top: 14px;
  line-height: 1.5;
  color: #07336f;
}
.lt-preview-dialog p {
  font-size: 13px;
  margin-top: 12px;
  line-height: 1.85;
  color: #5e7792;
}
.lt-dialog-notice {
  font-size: 11px;
  line-height: 1.75;
  padding: 11px;
  background: #f0f7ff;
  border-radius: 9px;
  color: #4e7298;
  margin-top: 18px;
}
.lt-dialog-done {
  display: block;
  background: #087dff;
  color: white;
  border-radius: 8px;
  padding: 10px 20px;
  margin: 18px 0 0 auto;
}
@media (max-width:1190px) {
  .lt-quick-strip {
    grid-template-columns: repeat(3,1fr);
  }
  .lt-content-grid {
    grid-template-columns: minmax(0,1fr) 290px;
  }
  .lt-channel-hero {
    grid-template-columns: minmax(0,1fr) 300px;
  }
}
@media (max-width:1050px) {
  .lt-content-grid {
    grid-template-columns: minmax(0,1fr);
  }
  .lt-sidebar {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    align-items: start;
  }
  .lt-channel-hero {
    grid-template-columns: 1fr 285px;
  }
  .lt-mobile-search {
    display: block;
    margin-top: 17px;
  }
  .lt-local-search {
    display: flex;
    align-items: center;
    padding: 7px;
    gap: 7px;
  }
  .lt-local-search input {
    flex: 1;
    border: 0;
    padding: 8px 10px;
    outline: 0;
  }
  .lt-local-search button {
    padding: 8px 20px;
    border-radius: 7px;
    background: #087dff;
    color: #fff;
  }
}
@media (max-width:800px) {
  .lt-page .site-nav.is-open {
    display: grid;
  }
  .lt-channel-hero {
    grid-template-columns: 1fr;
  }
  .lt-hero-actions {
    grid-template-columns: repeat(4,minmax(0,1fr));
  }
  .lt-hero-action {
    min-height: 89px;
    padding: 10px;
  }
  .lt-hero-action small {
    font-size: 9px;
  }
  .lt-guides {
    grid-template-columns: repeat(3,minmax(0,1fr));
  }
}
@media (max-width:640px) {
  .lt-page .container {
    width: calc(100% - 28px);
  }
  .lt-quick-section {
    padding-top: 11px;
  }
  .lt-quick-strip {
    grid-template-columns: repeat(3,minmax(0,1fr));
    gap: 7px;
    padding: 9px;
    border-radius: 10px;
  }
  .lt-quick-item {
    padding: 8px 5px;
    min-height: 65px;
    gap: 5px;
    flex-direction: column;
    text-align: center;
  }
  .lt-quick-icon {
    width: 26px;
    height: 26px;
    border-radius: 7px;
  }
  .lt-quick-icon img {
    width: 22px;
    height: 22px;
  }
  .lt-quick-item b {
    font-size: 10px;
  }
  .lt-quick-item small {
    display: none;
  }
  .lt-crumb {
    margin-top: 11px;
  }
  .lt-breadcrumb {
    padding: 10px;
    gap: 6px;
    font-size: 11px;
  }
  .lt-channel-hero {
    padding: 20px 16px;
    margin-top: 11px;
  }
  .lt-channel-copy h1 {
    font-size: 26px;
  }
  .lt-channel-copy p {
    font-size: 12px;
    line-height: 1.8;
  }
  .lt-channel-tags {
    gap: 6px;
    margin-top: 12px;
  }
  .lt-channel-tags a {
    font-size: 10px;
    padding: 5px 9px;
  }
  .lt-hero-actions {
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 8px;
  }
  .lt-hero-action {
    min-height: 80px;
  }
  .lt-hero-action small {
    font-size: 10px;
  }
  .lt-mobile-search {
    margin-top: 11px;
  }
  .lt-content-grid {
    margin-top: 11px;
  }
  .lt-board {
    padding: 16px 14px;
  }
  .lt-board-head h2 {
    font-size: 19px;
  }
  .lt-board-head p {
    font-size: 11px;
  }
  .lt-board-indicator {
    font-size: 10px;
    padding: 4px 6px;
  }
  .lt-filter {
    font-size: 11px;
    padding: 5px 10px;
  }
  .lt-feature-article {
    grid-template-columns: 1fr;
    padding: 10px;
    gap: 9px;
  }
  .lt-feature-article>img {
    height: 160px;
    min-height: 0;
  }
  .lt-feature-body {
    padding: 3px;
  }
  .lt-feature-body h3 {
    font-size: 17px;
  }
  .lt-feature-body p {
    font-size: 12px;
  }
  .lt-article {
    grid-template-columns: 1fr;
    gap: 7px;
    padding: 15px 1px;
  }
  .lt-date {
    flex-direction: row;
    gap: 5px;
    width: max-content;
    height: 27px;
    border-radius: 99px;
    padding: 4px 10px;
  }
  .lt-date strong {
    font-size: 13px;
  }
  .lt-date span {
    font-size: 11px;
    margin-top: 0;
  }
  .lt-article h3 {
    font-size: 16px;
  }
  .lt-article-content>p {
    font-size: 12px;
  }
  .lt-article-meta {
    font-size: 10px;
  }
  .lt-pagination {
    gap: 7px;
  }
  .lt-pagination button {
    height: 34px;
    min-width: 34px;
    padding: 0 10px;
    font-size: 11px;
  }
  .lt-guides {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 11px;
  }
  .lt-guide {
    padding: 12px 15px;
  }
  .lt-guide-icon {
    float: left;
    margin: 1px 13px 0 0;
  }
  .lt-guide-more {
    margin-top: 4px;
  }
  .lt-sidebar {
    grid-template-columns: 1fr;
    gap: 11px;
  }
  .lt-side-card {
    padding: 16px;
  }
  .lt-friend {
    margin-top: 11px;
    padding: 12px 15px;
    gap: 9px 15px;
  }
  .lt-friend strong {
    flex-basis: 100%;
  }
  .lt-page .footer-main {
    margin-top: 0;
  }
}
@media (prefers-reduced-motion:reduce) {
  .lt-quick-item,.lt-hero-action,.lt-guide {
    transition: none!important;
  }
}
/* ========== V4: Header redesigned from supplied list_article.htm structure, theme from original homepage ========== */
.lt-page .lt-topbar {
  height: 36px;
  background: #f6faff;
  border-bottom: 1px solid #e3edf8;
  color: #6b829c;
  font-size: 12px;
}
.lt-page .lt-topbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.lt-page .lt-top-links {
  display: flex;
  gap: 22px;
  align-items: center;
  white-space: nowrap;
}
.lt-page .lt-top-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s;
}
.lt-page .lt-top-links a:hover {
  color: #087dff;
}
.lt-page .lt-top-link-icon {
  display: inline-flex;
  color: #087dff;
}
.lt-page .lt-top-link-icon .lt-line-icon {
  width: 15px;
  height: 15px;
}
.lt-page .lt-masthead {
  background: #fff;
  border-bottom: 1px solid #e6eef8;
}
.lt-page .lt-masthead-main {
  min-height: 111px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.lt-page .lt-mast-brand {
  display: flex;
  gap: 11px;
  align-items: center;
  flex: none;
  white-space: nowrap;
}
.lt-page .lt-mast-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
  filter: drop-shadow(0 6px 10px #06467d21);
}
.lt-page .lt-mast-brandtext strong {
  display: block;
  font-size: 27px;
  line-height: 1.2;
  color: #07336f;
  letter-spacing: .4px;
  font-weight: 800;
}
.lt-page .lt-mast-brandtext small {
  display: block;
  color: #7d93ab;
  font-size: 11px;
  margin-top: 6px;
  white-space: nowrap;
}
.lt-page .lt-mast-search-area {
  flex: 1;
  max-width: 490px;
  min-width: 190px;
  margin-left: auto;
}
.lt-page .lt-mast-search {
  width: 100%;
  height: 46px;
  display: flex;
  border: 2px solid #2587e7;
  overflow: hidden;
  border-radius: 27px;
  background: #fff;
  box-shadow: 0 3px 13px #1675d00b;
}
.lt-page .lt-mast-search input {
  min-width: 0;
  flex: 1;
  height: 100%;
  border: 0;
  outline: none;
  padding: 0 17px;
  background: transparent;
  color: #233e61;
  font-size: 13px;
}
.lt-page .lt-mast-search input::placeholder {
  color: #8699ad;
}
.lt-page .lt-mast-search button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 105px;
  color: #fff;
  font-weight: 650;
  background: linear-gradient(120deg,#087dff,#0a5ac8);
  font-size: 14px;
  cursor: pointer;
}
.lt-page .lt-mast-search button:hover {
  filter: brightness(1.07);
}
.lt-page .lt-mast-search button .lt-line-icon {
  width: 18px;
  height: 18px;
}
.lt-page .lt-hotwords {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
  margin-top: 7px;
  font-size: 11px;
  color: #93a5b6;
}
.lt-page .lt-hotwords button {
  font-size: 11px;
  color: #6785a5;
  border: 1px solid #e5eff9;
  background: #f5faff;
  border-radius: 99px;
  padding: 2px 9px;
  cursor: pointer;
}
.lt-page .lt-hotwords button:hover {
  background: #e5f2ff;
  color: #087dff;
  border-color: #b6d9ff;
}
.lt-page .lt-header-tools {
  width: 232px;
  flex: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.lt-page .lt-header-tools a {
  height: 37px;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  border: 1px solid #e1edf9;
  background: #f5faff;
  border-radius: 11px;
  color: #57738f;
  font-size: 12px;
  white-space: nowrap;
  transition: background .2s,color .2s,transform .2s;
}
.lt-page .lt-header-tools a .lt-line-icon {
  width: 16px;
  height: 16px;
  color: #087dff;
}
.lt-page .lt-header-tools a:hover {
  background: #eaf4ff;
  color: #075fc5;
  transform: translateY(-1px);
}
.lt-page .lt-nav-toggle {
  display: none;
  background: #eff7ff;
  color: #087dff;
  width: 43px;
  height: 43px;
  border-radius: 9px;
  align-items: center;
  justify-content: center;
  border: 1px solid #dceafb;
}
.lt-page .lt-wide-nav {
  height: 57px;
  background: linear-gradient(105deg,#07336f,#08529f 57%,#087dff);
  box-shadow: 0 10px 22px #0b56aa1b;
  color: #fff;
  position: relative;
  z-index: 15;
}
.lt-page .lt-nav-inner {
  height: 100%;
  display: flex;
  align-items: stretch;
}
.lt-page .lt-nav-inner a {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  position: relative;
  transition: background .2s;
}
.lt-page .lt-nav-inner a:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 36%;
  right: 36%;
  height: 3px;
  background: #e9f5ff;
  transform: scaleX(0);
  border-radius: 3px 3px 0 0;
  transition: transform .2s;
}
.lt-page .lt-nav-inner a:hover,.lt-page .lt-nav-inner a.active {
  background: #001e5a32;
  color: #fff;
}
.lt-page .lt-nav-inner a.active:after,.lt-page .lt-nav-inner a:hover:after {
  transform: scaleX(1);
}
.lt-page .lt-quick-section {
  padding-top: 17px;
}
.lt-page .lt-quick-strip {
  padding: 15px;
  gap: 11px;
  background: linear-gradient(120deg,#0752a1,#087dff 58%,#0b70c6);
  border-radius: 17px;
  box-shadow: 0 18px 35px #0656ac23;
}
.lt-page .lt-quick-item {
  min-height: 71px;
  padding: 10px 12px;
  gap: 10px;
  border-radius: 12px;
  background: #ffffff1b;
  border-color: #ffffff24;
}
.lt-page .lt-quick-item b {
  font-size: 14px;
}
.lt-page .lt-quick-item small {
  font-size: 11px;
  color: #e3f1ff;
}
.lt-page .lt-quick-icon {
  width: 38px;
  height: 38px;
  background: #ffffff35;
  border-radius: 11px;
}
.lt-page .lt-quick-icon img {
  width: 33px;
  height: 33px;
}
.lt-page .lt-breadcrumb {
  padding: 13px 17px;
  font-size: 13px;
  min-height: 50px;
  border-radius: 15px;
}
.lt-page .lt-crumb-marker {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border-radius: 0;
  padding: 0;
  color: #246fb8;
  font-size: 13px;
}
.lt-page .lt-crumb-location {
  width: 16px;
  height: 16px;
}
.lt-page .lt-breadcrumb [aria-current] {
  color: #07336f;
}
/* Standalone list page back-to-top: high-contrast icon, rounded gradient control, no text glyph rendering dependencies. */
.lt-page .back-to-top {
  display: grid;
  place-items: center;
  width: 49px;
  height: 49px;
  border-radius: 50%;
  border: 2px solid #fff;
  color: #fff;
  background: linear-gradient(135deg,#078fff,#0759c1);
  box-shadow: 0 9px 25px #06468455,0 0 0 4px #b2dcff55;
  right: 24px;
  bottom: 26px;
  z-index: 70;
  transition: transform .18s,filter .18s;
  line-height: 0;
}
.lt-page .back-to-top[hidden] {
  display: none!important;
}
.lt-page .back-to-top:hover {
  filter: brightness(1.1);
  transform: translateY(-3px);
}
.lt-page .lt-back-icon {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: #fff;
  stroke-width: 2.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
@media (max-width:1200px) {
  .lt-page .lt-masthead-main {
    gap: 18px;
  }
  .lt-page .lt-mast-brandtext strong {
    font-size: 24px;
  }
  .lt-page .lt-mast-brandtext small {
    font-size: 10px;
  }
  .lt-page .lt-header-tools {
    width: 205px;
  }
  .lt-page .lt-header-tools a {
    font-size: 11px;
  }
  .lt-page .lt-mast-search-area {
    max-width: none;
  }
}
@media (max-width:1000px) {
  .lt-page .lt-masthead-main {
    flex-wrap: wrap;
    gap: 15px;
    padding: 15px 0;
  }
  .lt-page .lt-mast-brand {
    flex: 1;
  }
  .lt-page .lt-header-tools {
    width: 230px;
  }
  .lt-page .lt-mast-search-area {
    order: 3;
    width: 100%;
    flex: auto;
    max-width: none;
    margin-left: 0;
  }
  .lt-page .lt-mast-search {
    max-width: none;
  }
  .lt-page .lt-mast-search-area {
    display: flex;
    gap: 15px;
    align-items: center;
  }
  .lt-page .lt-hotwords {
    flex: 1;
    margin-top: 0;
    min-width: 150px;
  }
  .lt-page .lt-mast-search {
    flex: 2;
  }
  .lt-page .lt-nav-inner a {
    font-size: 14px;
  }
}
@media (max-width:760px) {
  .lt-page .lt-topbar {
    height: 31px;
  }
  .lt-page .lt-welcome {
    display: none;
  }
  .lt-page .lt-topbar-inner {
    justify-content: center;
  }
  .lt-page .lt-top-links {
    gap: 23px;
    font-size: 11px;
  }
  .lt-page .lt-masthead-main {
    gap: 12px;
  }
  .lt-page .lt-mast-brandtext strong {
    font-size: 23px;
  }
  .lt-page .lt-mast-brandtext small {
    font-size: 9px;
  }
  .lt-page .lt-mast-logo {
    width: 52px;
    height: 52px;
  }
  .lt-page .lt-nav-toggle {
    display: flex;
    flex: none;
    order: 1;
  }
  .lt-page .lt-header-tools {
    order: 3;
    width: 100%;
    grid-template-columns: repeat(4,minmax(0,1fr));
    gap: 7px;
  }
  .lt-page .lt-header-tools a {
    font-size: 11px;
    gap: 5px;
    height: 39px;
  }
  .lt-page .lt-mast-search-area {
    order: 2;
    display: block;
    width: 100%;
    flex: none;
  }
  .lt-page .lt-hotwords {
    margin-top: 7px;
  }
  .lt-page .lt-wide-nav {
    height: auto;
    min-height: 0;
  }
  .lt-page .lt-nav-inner {
    display: none;
    height: auto;
    grid-template-columns: repeat(3,minmax(0,1fr));
    padding: 9px 0;
    gap: 4px 7px;
  }
  .lt-page .lt-nav-inner.is-open {
    display: grid;
  }
  .lt-page .lt-nav-inner a {
    font-size: 12px;
    min-height: 43px;
    padding: 8px 6px;
    border-radius: 6px;
  }
  .lt-page .lt-nav-inner a:after {
    display: none;
  }
  .lt-page .lt-quick-section {
    padding-top: 11px;
  }
}
@media (max-width:520px) {
  .lt-page .lt-top-links {
    gap: 11px;
  }
  .lt-page .lt-top-link-icon .lt-line-icon {
    width: 13px;
    height: 13px;
  }
  .lt-page .lt-masthead-main {
    padding: 12px 0;
  }
  .lt-page .lt-mast-brand {
    gap: 7px;
  }
  .lt-page .lt-mast-brandtext strong {
    font-size: 21px;
  }
  .lt-page .lt-mast-brandtext small {
    font-size: 8px;
    letter-spacing: 0;
    white-space: normal;
    max-width: 230px;
  }
  .lt-page .lt-mast-logo {
    width: 45px;
    height: 45px;
  }
  .lt-page .lt-mast-search {
    height: 44px;
  }
  .lt-page .lt-mast-search input {
    font-size: 12px;
    padding: 0 11px;
  }
  .lt-page .lt-mast-search input::placeholder {
    font-size: 11px;
  }
  .lt-page .lt-mast-search button {
    min-width: 74px;
    font-size: 12px;
  }
  .lt-page .lt-mast-search button .lt-line-icon {
    width: 15px;
    height: 15px;
  }
  .lt-page .lt-header-tools {
    grid-template-columns: repeat(2,minmax(0,1fr));
  }
  .lt-page .lt-header-tools a {
    height: 34px;
  }
  .lt-page .lt-quick-strip {
    gap: 7px;
    padding: 9px;
    border-radius: 10px;
  }
  .lt-page .lt-quick-item {
    min-height: 62px;
    gap: 5px;
    flex-direction: column;
    text-align: center;
    padding: 7px 3px;
  }
  .lt-page .lt-quick-item b {
    font-size: 10px;
  }
  .lt-page .lt-quick-icon {
    width: 27px;
    height: 27px;
    border-radius: 8px;
  }
  .lt-page .lt-quick-icon img {
    width: 23px;
    height: 23px;
  }
  .lt-page .lt-quick-item small {
    display: none;
  }
  .lt-page .lt-breadcrumb {
    padding: 11px;
    font-size: 11px;
    min-height: 43px;
    gap: 6px;
  }
  .lt-page .lt-crumb-marker {
    font-size: 11px;
  }
  .lt-page .back-to-top {
    width: 44px;
    height: 44px;
    bottom: 18px;
    right: 15px;
  }
  .lt-page .lt-back-icon {
    width: 22px;
    height: 22px;
  }
}
@media (max-width:360px) {
  .lt-page .lt-mast-brandtext strong {
    font-size: 19px;
  }
  .lt-page .lt-mast-brandtext small {
    font-size: 7px;
  }
  .lt-page .lt-nav-toggle {
    width: 38px;
    height: 38px;
  }
}