/* roulang page: index */
:root {
    --primary-600: #0E7C78;
    --primary-700: #09635F;
    --primary-100: #E0F0EE;
    --accent-500: #E2803D;
    --accent-600: #CF6F2D;
    --bg-page: #F7F5F1;
    --bg-surface: #FFFFFF;
    --text-main: #1F2B2A;
    --text-soft: #5E6E6B;
    --text-faint: #9AA8A5;
    --border-line: #E5E2DA;
    --error: #C03A2B;
    --success: #2E8B6D;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-card: 0 1px 2px rgba(22,60,58,.04), 0 12px 28px rgba(22,60,58,.05);
    --shadow-hover: 0 2px 4px rgba(22,60,58,.05), 0 16px 36px rgba(22,60,58,.08);
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
  }
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }
  input {
    font-family: inherit;
  }

  .container {
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  @media (min-width:640px) {
    .container {
      padding-left: 2rem;
      padding-right: 2rem;
    }
  }

  #siteHeader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 60;
    background: linear-gradient(to right, transparent 0%, transparent 48%, var(--primary-700) 48%, var(--primary-700) 100%);
    border-bottom: 1px solid transparent;
    transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
  }
  #siteHeader.scrolled {
    background: rgba(247,245,241,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border-line);
    box-shadow: 0 1px 0 rgba(22,60,58,.02);
  }
  @media (max-width:1023px) {
    #siteHeader {
      background: linear-gradient(to right, rgba(9,99,95,.88), rgba(9,99,95,.95));
    }
    #siteHeader.scrolled {
      background: rgba(247,245,241,.94);
    }
  }

  .brand-logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-700);
    letter-spacing: -0.01em;
    line-height: 1.2;
    white-space: nowrap;
  }
  .brand-badge {
    display: inline-flex;
    align-items: center;
    padding: .15rem .5rem;
    border: 1px solid var(--primary-600);
    border-radius: 9999px;
    color: var(--primary-600);
    font-size: .7rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: .02em;
  }

  .nav-link {
    position: relative;
    font-size: .9375rem;
    font-weight: 500;
    color: var(--text-main);
    padding: .5rem 0;
    transition: color .2s;
    white-space: nowrap;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: var(--primary-600);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .25s ease;
  }
  .nav-link:hover {
    color: var(--primary-600);
  }
  .nav-link:hover::after,
  .nav-link.active::after {
    transform: scaleX(1);
  }
  .nav-link.active {
    color: var(--primary-600);
    font-weight: 600;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: 10px;
    background: var(--accent-500);
    color: #fff;
    font-weight: 600;
    font-size: .9375rem;
    line-height: 1.4;
    transition: all .25s ease;
    white-space: nowrap;
  }
  .btn-primary:hover {
    background: var(--accent-600);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(226,128,61,.28);
  }
  .btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
  }
  .btn-primary:focus-visible {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
  }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: 10px;
    border: 1px solid rgba(31,43,42,.55);
    color: var(--text-main);
    font-weight: 600;
    font-size: .9375rem;
    line-height: 1.4;
    transition: all .25s ease;
    white-space: nowrap;
    background: transparent;
  }
  .btn-secondary:hover {
    border-color: var(--primary-600);
    background: var(--primary-600);
    color: #fff;
    transform: translateY(-1px);
  }
  .btn-secondary:focus-visible {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
  }

  .text-link {
    color: var(--primary-600);
    font-weight: 600;
    font-size: .9375rem;
    transition: color .2s;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
  }
  .text-link:hover {
    text-decoration: underline;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding: .2rem .7rem;
    border-radius: 9999px;
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.4;
  }

  .section-title {
    font-size: clamp(1.5rem, 2.5vw, 2.2rem);
    font-weight: 650;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--text-main);
  }

  .hero {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 100vh;
    min-height: 100svh;
  }
  .hero-left {
    background: var(--bg-page);
    display: flex;
    align-items: center;
    padding: 7rem 1.25rem 4rem;
    position: relative;
    z-index: 1;
  }
  .hero-right {
    position: relative;
    min-height: 55vh;
    background: var(--primary-700);
    overflow: hidden;
  }
  .dot-grid {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255,255,255,.28) 1px, transparent 1px);
    background-size: 22px 22px;
    opacity: .7;
  }
  @media (min-width:640px) {
    .hero-left {
      padding: 7rem 2rem 4rem;
    }
  }
  @media (min-width:1024px) {
    .hero {
      grid-template-columns: 1fr 1fr;
    }
    .hero-left {
      padding: 2rem 4rem;
    }
    .hero-right {
      min-height: 0;
      height: 100%;
    }
  }

  .feature-item {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 1rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-line);
    transition: background .2s;
  }
  .feature-item:last-child {
    border-bottom: none;
  }
  .feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-100);
    color: var(--primary-700);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .feature-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 340px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-line);
    box-shadow: var(--shadow-card);
    transition: transform .3s ease, box-shadow .3s ease;
  }
  .feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }
  .feature-card .card-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .feature-card .card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(9,99,95,.92) 0%, rgba(9,99,95,.55) 45%, rgba(9,99,95,.15) 100%);
  }
  .feature-card .card-body {
    position: relative;
    padding: 1.75rem 1.5rem 1.5rem;
    color: #fff;
  }
  .arrow-move {
    display: inline-flex;
    align-items: center;
    gap: .25rem;
    transition: transform .25s ease;
  }
  .feature-card:hover .arrow-move {
    transform: translateX(4px);
  }

  .content-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-line);
    border-radius: 14px;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    flex-direction: column;
    min-height: 160px;
    flex: 1;
  }
  .content-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }
  .content-card:hover h3 {
    color: var(--primary-700);
  }
  .content-card:hover .arrow-move {
    transform: translateX(4px);
  }
  .content-card .arrow-move {
    transition: transform .25s ease;
  }
  .content-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    transition: color .25s;
  }

  .news-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1.25rem;
    align-items: center;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--border-line);
    border-radius: 8px;
    transition: background .2s ease;
  }
  .news-row:hover {
    background: rgba(224,240,238,.45);
  }
  .news-row:hover .news-title {
    color: var(--primary-600);
  }
  .news-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-main);
    transition: color .2s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .news-summary {
    font-size: .875rem;
    color: var(--text-soft);
    line-height: 1.6;
    margin-top: 2px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-time {
    font-size: .8125rem;
    color: var(--text-faint);
    white-space: nowrap;
  }
  @media (max-width:767px) {
    .news-row {
      grid-template-columns: 1fr;
      gap: .5rem;
    }
    .news-time {
      display: none;
    }
  }

  .empty-state {
    text-align: center;
    padding: 4rem 2rem;
    border: 1px dashed var(--border-line);
    border-radius: 14px;
    background: var(--bg-page);
  }
  .empty-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: var(--primary-100);
    color: var(--primary-700);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-600);
  }
  .quote-mark {
    font-size: 4rem;
    line-height: 0;
    display: block;
    color: rgba(255,255,255,.5);
    font-family: Georgia, serif;
    margin-bottom: .5rem;
  }

  .cta-banner {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
  }
  .cta-banner-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(9,99,95,.85), rgba(9,99,95,.68));
  }
  .subscribe-form {
    display: flex;
    gap: .75rem;
    max-width: 440px;
    margin: 1.75rem auto 0;
    flex-direction: column;
  }
  @media (min-width:640px) {
    .subscribe-form {
      flex-direction: row;
    }
  }
  .subscribe-form input {
    flex: 1;
    height: 46px;
    padding: 0 1rem;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,.55);
    background: #fff;
    color: var(--text-main);
    font-size: .9375rem;
    transition: border-color .2s, box-shadow .2s;
  }
  .subscribe-form input::placeholder {
    color: var(--text-faint);
  }
  .subscribe-form input:focus {
    outline: none;
    border-color: var(--primary-600);
    box-shadow: 0 0 0 3px rgba(14,124,120,.15);
  }
  .subscribe-form .error-border {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(192,58,43,.1);
  }
  .subscribe-form .success-border {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(46,139,109,.12);
  }

  .footer-col h4 {
    font-size: .9375rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1.25rem;
    letter-spacing: .02em;
  }
  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: .65rem;
  }
  .footer-col a {
    color: rgba(255,255,255,.78);
    font-size: .875rem;
    transition: color .2s;
  }
  .footer-col a:hover {
    color: #f3b07e;
  }

  .faq-item {
    border-bottom: 1px solid var(--border-line);
    transition: background .2s;
  }
  .faq-item:last-child {
    border-bottom: none;
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-main);
    text-align: left;
    width: 100%;
    transition: color .2s;
  }
  .faq-question:hover {
    color: var(--primary-600);
  }
  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1.5px solid var(--primary-600);
    color: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1;
    transition: transform .3s ease, background .3s ease, color .3s ease;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--primary-600);
    color: #fff;
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .faq-answer-inner {
    padding: 0 1.5rem 1.5rem;
    font-size: .9375rem;
    color: var(--text-soft);
    line-height: 1.75;
  }
  .faq-item.open {
    background: rgba(224,240,238,.35);
    border-left: 3px solid var(--primary-600);
  }

  .mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: flex;
    justify-content: flex-end;
  }
  .mobile-menu .menu-overlay {
    position: absolute;
    inset: 0;
    background: rgba(31,43,42,.45);
  }
  .mobile-menu .menu-panel {
    position: relative;
    width: 300px;
    max-width: 85vw;
    height: 100%;
    background: var(--bg-surface);
    box-shadow: -12px 0 30px rgba(22,60,58,.15);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    transform: translateX(0);
    transition: transform .3s ease;
  }
  .mobile-menu.hidden-panel {
    display: none;
  }

  @media (min-width:1024px) {
    .mobile-menu {
      display: none;
    }
  }

  .focus-visible-outline:focus-visible {
    outline: 2px solid var(--primary-600);
    outline-offset: 2px;
  }

/* roulang page: article */
:root {
  --primary-100: #E0F0EE;
  --primary-600: #0E7C78;
  --primary-700: #09635F;
  --primary-800: #07514D;
  --accent-300: #F2B98C;
  --accent-500: #E2803D;
  --accent-600: #CF6F2D;
  --bg-page: #F7F5F1;
  --bg-surface: #FFFFFF;
  --text-main: #1F2B2A;
  --text-soft: #5E6E6B;
  --text-faint: #9AA8A5;
  --border-line: #E5E2DA;
  --shadow-card: 0 1px 2px rgba(22,60,58,.04), 0 12px 28px rgba(22,60,58,.05);
  --shadow-card-hover: 0 2px 4px rgba(22,60,58,.06), 0 18px 36px rgba(22,60,58,.10);
  --radius-card: 14px;
  --radius-image: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-main);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-600); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-700); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; outline: none; }

.container { max-width: 80rem; margin: 0 auto; padding: 0 1.25rem; }
@media (max-width: 640px) { .container { padding: 0 1rem; } }

/* 导航联动样式 */
.site-header { position: absolute; top: 0; left: 0; right: 0; z-index: 50; transition: all .3s ease; }
.site-header.scrolled { position: fixed; background: rgba(247, 245, 241, .92); backdrop-filter: blur(10px); box-shadow: 0 1px 0 var(--border-line); }
.nav-link { font-size: .95rem; font-weight: 500; color: var(--text-main); padding: .5rem .25rem; position: relative; transition: color .2s ease; white-space: nowrap; }
.nav-link:hover { color: var(--primary-600); }
.nav-link.active { color: var(--primary-600); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: var(--primary-600); border-radius: 2px; }
.brand-logo { font-size: 1.25rem; font-weight: 700; color: var(--primary-700); letter-spacing: -0.01em; white-space: nowrap; }

/* 按钮样式 */
.btn-primary { display: inline-flex; align-items: center; gap: .5rem; background: var(--accent-500); color: #fff; font-weight: 600; font-size: .95rem; padding: .75rem 1.5rem; border-radius: 10px; border: none; transition: all .25s ease; }
.btn-primary:hover { background: var(--accent-600); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(226,128,61,.25); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-secondary { display: inline-flex; align-items: center; gap: .5rem; background: transparent; border: 1px solid var(--text-main); color: var(--text-main); font-weight: 600; font-size: .95rem; padding: .75rem 1.5rem; border-radius: 10px; transition: all .25s ease; }
.btn-secondary:hover { background: var(--primary-600); border-color: var(--primary-600); color: #fff; transform: translateY(-1px); }
.btn-secondary:active { transform: translateY(0); }
.btn:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--primary-600); outline-offset: 2px; }

/* 手风琴FAQ */
.faq-item { border-bottom: 1px solid var(--border-line); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.5rem 0; cursor: pointer; transition: background .2s ease; }
.faq-question h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-main); }
.faq-icon { width: 32px; height: 32px; flex-shrink: 0; border: 1px solid var(--border-line); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--primary-600); font-size: 1.25rem; font-weight: 300; transition: all .3s ease; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer-inner { padding: 0 0 1.25rem; color: var(--text-soft); line-height: 1.8; }
.faq-item.active .faq-icon { background: var(--primary-600); color: #fff; border-color: var(--primary-600); transform: rotate(45deg); }
.faq-item.active .faq-answer { max-height: 500px; }

/* 文章正文样式 */
.article-body { font-size: 1.125rem; line-height: 1.8; color: var(--text-main); }
.article-body p { margin: 1.5em 0; }
.article-body h2 { font-size: clamp(1.35rem, 2.5vw, 1.75rem); font-weight: 650; line-height: 1.3; margin-top: 2.5em; margin-bottom: .75em; padding-bottom: .5em; border-bottom: 1px solid var(--border-line); }
.article-body h3 { font-size: 1.25rem; font-weight: 600; margin-top: 2em; margin-bottom: .6em; }
.article-body blockquote { border-left: 4px solid var(--primary-600); background: var(--primary-100); padding: 1.25rem 1.5rem; border-radius: 0 10px 10px 0; margin: 1.75em 0; color: var(--text-soft); }
.article-body blockquote p { margin: 0; }
.article-body img { border-radius: 12px; margin: 1.75em 0; width: 100%; }
.article-body ul, .article-body ol { margin: 1.25em 0; padding-left: 1.5em; line-height: 1.8; }
.article-body li { margin: .5em 0; }
.article-body a { text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--accent-600); }
.article-body img + em, .article-body .img-caption { display: block; text-align: center; font-size: .875rem; color: var(--text-soft); margin-top: -1em; margin-bottom: 1.75em; font-style: normal; }

/* 相关推荐卡 */
.related-card { background: var(--bg-surface); border: 1px solid var(--border-line); border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: all .25s ease; }
.related-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.related-card img { width: 100%; height: 180px; object-fit: cover; }
.related-card h4 { font-size: 1rem; font-weight: 600; line-height: 1.4; transition: color .2s ease; }
.related-card:hover h4 { color: var(--primary-700); }

/* 文章摘要行数控制 */
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 页面头部分割 */
.page-banner { position: relative; background-size: cover; background-position: center; padding: 8rem 0 3.5rem; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: rgba(9, 99, 95, .82); }
.page-banner .container { position: relative; z-index: 1; }

/* 文章内容空态 */
.empty-article { text-align: center; padding: 5rem 1rem; background: var(--bg-surface); border-radius: var(--radius-card); border: 1px solid var(--border-line); }
.empty-article .empty-icon { width: 72px; height: 72px; border-radius: 50%; background: var(--primary-100); display: flex; align-items: center; justify-content: center; margin: 0 auto 1.5rem; color: var(--primary-600); }

/* 标签 */
.tag { display: inline-block; background: var(--primary-100); color: var(--primary-700); font-size: .8rem; font-weight: 500; padding: .3rem .8rem; border-radius: 999px; transition: all .25s ease; }
.tag:hover { background: var(--primary-600); color: #fff; }

/* 相关推荐横向布局 */
.related-horizontal { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.5rem; }
@media (max-width: 768px) { .related-horizontal { grid-template-columns: 1fr; } }

/* 文章头部Meta */
.meta-item { color: var(--text-soft); font-size: .875rem; }
.meta-separator { color: var(--text-faint); margin: 0 .5rem; }

/* 版权与页脚 */
.footer-col h4 { color: #fff; font-size: .95rem; font-weight: 600; margin-bottom: 1.25rem; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: .65rem; }
.footer-col ul li a { color: rgba(255,255,255,.75); font-size: .9rem; transition: color .25s ease; }
.footer-col ul li a:hover { color: var(--accent-300); }

/* 首屏导航分屏联动 */
.hero-split { min-height: 100vh; display: flex; flex-direction: column; }
@media (min-width: 1024px) {
  .hero-split { flex-direction: row; }
  .hero-left { width: 55%; }
  .hero-right { width: 45%; }
}
/* 滚动状态交互 */
.sticky-header { position: sticky; top: 0; z-index: 100; }
.breadcrumb { font-size: .875rem; color: var(--text-soft); display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.breadcrumb a { color: var(--primary-600); }
.breadcrumb a:hover { color: var(--primary-700); text-decoration: underline; }
.breadcrumb .sep { color: var(--text-faint); }

/* 阅读量 / 时间等状态 */
.article-tags { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--border-line); }

/* 返回导航链接 */
.return-link { display: inline-flex; align-items: center; gap: .35rem; color: var(--primary-600); font-weight: 500; font-size: .95rem; transition: all .25s ease; }
.return-link:hover { color: var(--primary-700); text-decoration: underline; }

/* 移动端菜单 */
.mobile-menu { position: fixed; top: 0; right: -100%; width: 75%; max-width: 320px; height: 100vh; background: var(--bg-surface); z-index: 200; box-shadow: -10px 0 40px rgba(0,0,0,.08); transition: right .3s ease; padding: 5rem 2rem; }
.mobile-menu.open { right: 0; }
.mobile-menu-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); backdrop-filter: blur(2px); z-index: 199; display: none; }
.mobile-menu-overlay.open { display: block; }
/* 小屏适配 */
@media (max-width: 640px) {
  .article-body { font-size: 1.05rem; line-height: 1.8; }
  .article-body h2 { font-size: 1.3rem; }
}

/* roulang page: category2 */
:root {
      --primary-100: #E0F0EE;
      --primary-600: #0E7C78;
      --primary-700: #09635F;
      --accent-500: #E2803D;
      --accent-600: #CF6F2D;
      --bg-page: #F7F5F1;
      --bg-surface: #FFFFFF;
      --text-main: #1F2B2A;
      --text-soft: #5E6E6B;
      --text-faint: #9AA8A5;
      --border-line: #E5E2DA;
      --error: #C03A2B;
      --success: #2E8B6D;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --radius-xl: 16px;
      --shadow-card: 0 1px 2px rgba(22,60,58,.04), 0 12px 28px rgba(22,60,58,.05);
      --shadow-card-hover: 0 2px 4px rgba(22,60,58,.06), 0 18px 36px rgba(22,60,58,.08);
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }

    button {
      font-family: inherit;
      cursor: pointer;
    }

    input {
      font-family: inherit;
    }

    .container {
      max-width: 80rem;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }

    @media (min-width: 640px) {
      .container {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }

    .display {
      font-size: clamp(2rem, 4.5vw, 3.6rem);
      font-weight: 700;
      line-height: 1.15;
      letter-spacing: -0.01em;
    }

    .section-title {
      font-size: clamp(1.5rem, 2.5vw, 2.2rem);
      font-weight: 650;
      line-height: 1.3;
    }

    .card-title {
      font-size: 1.125rem;
      font-weight: 600;
      line-height: 1.45;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--accent-500);
      color: #fff;
      font-weight: 600;
      padding: .75rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid transparent;
      transition: all .25s ease;
    }

    .btn-primary:hover {
      background-color: var(--accent-600);
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(224, 128, 61, .25);
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: transparent;
      color: var(--text-main);
      font-weight: 600;
      padding: .75rem 1.5rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-line);
      transition: all .25s ease;
    }

    .btn-secondary:hover {
      background-color: var(--primary-600);
      border-color: var(--primary-600);
      color: #fff;
    }

    .btn:focus-visible {
      outline: 2px solid var(--primary-600);
      outline-offset: 2px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      padding: .2rem .7rem;
      font-size: .75rem;
      font-weight: 600;
      border-radius: 999px;
      background-color: var(--primary-100);
      color: var(--primary-700);
    }

    .card {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      transition: transform .3s ease, box-shadow .3s ease;
    }

    .card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-card-hover);
    }

    .nav-link {
      position: relative;
      font-size: .95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: .35rem 0;
      transition: color .2s ease;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary-600);
      transition: width .28s ease;
    }

    .nav-link:hover {
      color: var(--primary-600);
    }

    .nav-link.active {
      color: var(--primary-600);
      font-weight: 600;
    }

    .nav-link.active::after {
      width: 100%;
    }

    .footer-col h4 {
      font-size: .95rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 1rem;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: .65rem;
    }

    .footer-col ul li a {
      color: rgba(255, 255, 255, .7);
      font-size: .875rem;
      transition: color .2s ease;
    }

    .footer-col ul li a:hover {
      color: var(--accent-300);
    }

    .step-item {
      position: relative;
    }

    .step-number {
      flex-shrink: 0;
      width: 40px;
      height: 40px;
      border-radius: 9999px;
      background-color: var(--primary-600);
      color: #fff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.125rem;
    }

    .step-line {
      position: absolute;
      left: 20px;
      top: 48px;
      bottom: -24px;
      width: 1px;
      background-color: var(--border-line);
    }

    .step-item:last-child .step-line {
      display: none;
    }

    .faq-item {
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      background-color: var(--bg-surface);
      transition: border-color .25s ease, background-color .25s ease;
    }

    .faq-item.open {
      background-color: var(--primary-100);
      border-color: var(--primary-600);
      box-shadow: inset 3px 0 0 var(--primary-600);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.25rem 1.5rem;
      cursor: pointer;
      gap: 1.5rem;
    }

    .faq-q-text {
      font-weight: 600;
      font-size: 1rem;
      color: var(--text-main);
      line-height: 1.5;
    }

    .faq-icon {
      flex-shrink: 0;
      width: 32px;
      height: 32px;
      border-radius: 9999px;
      border: 1px solid var(--border-line);
      background-color: var(--bg-surface);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 300;
      color: var(--primary-600);
      transition: transform .3s ease, background-color .2s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background-color: var(--primary-600);
      color: #fff;
      border-color: var(--primary-600);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease, padding .3s ease;
    }

    .faq-item.open .faq-answer {
      max-height: 400px;
      padding: 0 1.5rem 1.5rem;
    }

    .form-input {
      width: 100%;
      height: 44px;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      background-color: #fff;
      padding: 0 1rem;
      font-size: .95rem;
      color: var(--text-main);
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .form-input::placeholder {
      color: var(--text-faint);
    }

    .form-input:focus {
      outline: none;
      border-color: var(--primary-600);
      box-shadow: 0 0 0 3px rgba(14, 124, 120, .15);
    }

    .form-input.error {
      border-color: var(--error);
      box-shadow: 0 0 0 3px rgba(192, 58, 43, .12);
    }

    .text-link {
      color: var(--primary-600);
      font-weight: 500;
      transition: color .2s ease;
    }

    .text-link:hover {
      text-decoration: underline;
      color: var(--primary-700);
    }

    .arrow-link {
      display: inline-flex;
      align-items: center;
      gap: .35rem;
      color: var(--primary-600);
      font-weight: 600;
      font-size: .9rem;
      transition: color .2s ease;
    }

    .arrow-link .arrow {
      transition: transform .25s ease;
    }

    .arrow-link:hover .arrow {
      transform: translateX(4px);
    }

    .arrow-link:hover {
      color: var(--primary-700);
    }

    .hero-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }

    .dots-pattern {
      background-image: radial-gradient(rgba(255,255,255,.22) 1px, transparent 1px);
      background-size: 22px 22px;
    }

    .hero-right {
      background-color: var(--primary-700);
      position: relative;
      overflow: hidden;
    }

    .hero-right::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(9, 99, 95, .65) 0%, rgba(9, 99, 95, .18) 55%, rgba(9, 99, 95, .08) 100%);
      z-index: 1;
    }

    .hero-right .back-img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: .7;
    }

    .hero-right .content {
      position: relative;
      z-index: 2;
    }

    .banner-section {
      position: relative;
      padding: 7rem 0 5rem;
      background-size: cover;
      background-position: center 30%;
      overflow: hidden;
    }

    .banner-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(9, 99, 95, .9) 0%, rgba(14, 124, 120, .72) 60%, rgba(9, 99, 95, .55) 100%);
      z-index: 1;
    }

    .banner-section .banner-content {
      position: relative;
      z-index: 2;
    }

    .page-nav-wrapper {
      position: sticky;
      top: 0;
      z-index: 50;
      background-color: var(--bg-page);
      border-bottom: 1px solid var(--border-line);
      transition: background-color .3s ease, box-shadow .3s ease;
    }

    .mega-card {
      background-size: cover;
      background-position: center;
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
    }

    .mega-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(9, 99, 95, .15) 0%, rgba(9, 99, 95, .78) 100%);
      z-index: 1;
    }

    .mega-card .content {
      position: relative;
      z-index: 2;
    }

    .info-row {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 1.5rem 0;
      border-bottom: 1px solid var(--border-line);
    }

    .info-row:last-child {
      border-bottom: none;
    }

    .resource-card {
      display: flex;
      align-items: flex-start;
      gap: 1.25rem;
      padding: 1.25rem;
      background-color: var(--bg-surface);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-lg);
      transition: all .3s ease;
    }

    .resource-card:hover {
      border-color: var(--primary-600);
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-2px);
    }

    @media (max-width: 1023px) {
      .hero-split {
        grid-template-columns: 1fr;
      }
      .hero-left {
        padding-bottom: 3rem;
      }
      .hero-right {
        min-height: 320px;
      }
      .banner-section {
        padding-top: 6rem;
        padding-bottom: 4rem;
      }
    }

    @media (max-width: 767px) {
      .hero-right {
        min-height: 240px;
      }
      .step-row {
        flex-direction: column;
        gap: 1rem;
      }
      .step-body {
        padding-left: 0;
      }
      .faq-question {
        padding: 1rem 1.25rem;
      }
      .faq-item.open .faq-answer {
        padding: 0 1.25rem 1.25rem;
      }
    }

/* roulang page: category1 */
:root {
    --primary-600: #0E7C78;
    --primary-700: #09635F;
    --primary-100: #E0F0EE;
    --accent-500: #E2803D;
    --accent-600: #CF6F2D;
    --accent-300: #F2B28C;
    --bg-page: #F7F5F1;
    --bg-surface: #FFFFFF;
    --text-main: #1F2B2A;
    --text-soft: #5E6E6B;
    --text-faint: #9AA8A5;
    --border-line: #E5E2DA;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --shadow-card: 0 1px 2px rgba(22,60,58,.04), 0 12px 28px rgba(22,60,58,.05);
    --shadow-hover: 0 4px 12px rgba(22,60,58,.08), 0 16px 32px rgba(22,60,58,.08);
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-main);
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: color .2s ease; }
  button { font-family: inherit; cursor: pointer; }
  input { font-family: inherit; }

  .container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.25rem;
  }
  @media (min-width: 768px) {
    .container { padding: 0 2rem; }
  }

  /* 导航 */
  .brand-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-700);
    letter-spacing: -0.01em;
    line-height: 1.2;
  }
  .nav-link {
    position: relative;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-soft);
    padding: 0.35rem 0;
    transition: color .2s ease;
  }
  .nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary-600);
    border-radius: 2px;
    transition: width .25s ease;
  }
  .nav-link:hover { color: var(--primary-700); }
  .nav-link:hover::after { width: 100%; }
  .nav-link.active { color: var(--primary-600); font-weight: 600; }
  .nav-link.active::after { width: 100%; }

  /* 按钮 */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--accent-500);
    color: #fff !important;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    border: none;
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
    box-shadow: 0 2px 8px rgba(226,128,61,.25);
  }
  .btn-primary:hover { background: var(--accent-600); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(226,128,61,.3); }
  .btn-primary:active { transform: translateY(0); }
  .btn-primary:focus-visible { outline: 2px solid var(--primary-600); outline-offset: 2px; }

  .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--text-main);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-line);
    transition: all .2s ease;
  }
  .btn-secondary:hover { background: var(--primary-600); border-color: var(--primary-600); color: #fff; }
  .btn-secondary:focus-visible { outline: 2px solid var(--primary-600); outline-offset: 2px; }

  .btn-text {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary-600);
    font-weight: 600;
    font-size: 0.95rem;
    transition: gap .2s ease;
  }
  .btn-text:hover { gap: 0.7rem; color: var(--primary-700); }
  .btn-text:hover i { transform: translateX(4px); }
  .btn-text i { transition: transform .2s ease; }

  /* 区块 */
  .section-padding { padding: clamp(4rem, 8vw, 6rem) 0; }
  .section-title {
    font-size: clamp(1.5rem, 2.5vw, 2.2rem);
    font-weight: 650;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--text-main);
  }
  .section-subtitle {
    font-size: 1rem;
    color: var(--text-soft);
    margin-top: 0.5rem;
  }

  /* 卡片 */
  .card {
    background: var(--bg-surface);
    border: 1px solid var(--border-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 1.5rem 2rem;
    transition: box-shadow .3s ease, transform .3s ease;
  }
  .card-hover:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.8rem;
    background: var(--primary-100);
    color: var(--primary-700);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 999px;
    white-space: nowrap;
  }

  /* 步骤流 */
  .steps-flow {
    position: relative;
    max-width: 56rem;
    margin: 0 auto;
  }
  .step-item {
    position: relative;
    padding-left: 4.5rem;
    padding-bottom: 3rem;
  }
  .step-item:last-child { padding-bottom: 0; }
  .step-item::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    top: 3rem;
    bottom: 0;
    width: 2px;
    background: var(--primary-100);
  }
  .step-item:last-child::before { display: none; }
  .step-marker {
    position: absolute;
    left: 0;
    top: 0;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--primary-600);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 5px rgba(14,124,120,.12);
  }
  .step-body h3 {
    font-size: 1.25rem;
    font-weight: 650;
    color: var(--text-main);
    margin-bottom: 0.5rem;
  }
  .step-body p {
    color: var(--text-soft);
    font-size: 1rem;
    line-height: 1.75;
    max-width: 46rem;
  }
  .step-cover {
    margin-top: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-line);
    max-width: 28rem;
  }
  .step-cover img {
    width: 100%;
    height: 180px;
    object-fit: cover;
  }

  /* FAQ */
  .faq-list {
    max-width: 48rem;
    margin: 0 auto;
    border-top: 1px solid var(--border-line);
  }
  .faq-item {
    border-bottom: 1px solid var(--border-line);
    transition: background .2s ease;
  }
  .faq-item:hover { background: rgba(14,124,120,.03); }
  .faq-item.open { background: rgba(14,124,120,.05); }
  .faq-item.open .faq-question { border-left: 3px solid var(--primary-600); }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: border-color .2s ease, background .2s ease;
  }
  .faq-icon {
    flex-shrink: 0;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--primary-100);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform .3s ease, background .3s ease;
    color: var(--primary-700);
    font-size: 0.85rem;
  }
  .faq-item.open .faq-icon {
    background: var(--primary-600);
    color: #fff;
    transform: rotate(45deg);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }
  .faq-answer-inner {
    padding: 0 1.5rem 1.25rem 1.5rem;
    color: var(--text-soft);
    font-size: 0.975rem;
    line-height: 1.8;
  }

  /* 页脚 */
  .footer-col h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1rem;
  }
  .footer-col ul { list-style: none; }
  .footer-col ul li { margin-bottom: 0.55rem; }
  .footer-col ul a {
    color: rgba(255,255,255,.7);
    font-size: 0.9rem;
    transition: color .2s ease;
  }
  .footer-col ul a:hover { color: var(--accent-300); }

  /* 移动端菜单 */
  @media (max-width: 1023px) {
    .drawer-menu {
      position: fixed;
      inset: 0;
      z-index: 60;
      background: var(--bg-surface);
      transform: translateX(-100%);
      transition: transform .3s ease;
      display: flex;
      flex-direction: column;
      padding: 2rem 1.5rem;
    }
    .drawer-menu.open { transform: translateX(0); }
    .drawer-menu .drawer-nav-link {
      font-size: 1.125rem;
      font-weight: 600;
      padding: 0.75rem 0;
      border-bottom: 1px solid var(--border-line);
      color: var(--text-main);
    }
    .drawer-menu .drawer-nav-link.active { color: var(--primary-600); }
    .drawer-menu .drawer-close {
      align-self: flex-end;
      background: none;
      border: none;
      font-size: 1.25rem;
      color: var(--text-soft);
      padding: 0.5rem;
    }
  }
  @media (min-width: 1024px) {
    .drawer-menu { display: none; }
  }
  /* 移动端步骤 */
  @media (max-width: 640px) {
    .step-item {
      padding-left: 3.25rem;
      padding-bottom: 2.25rem;
    }
    .step-item::before { left: 1rem; }
    .step-marker {
      width: 2rem;
      height: 2rem;
      font-size: 0.875rem;
    }
    .step-body h3 { font-size: 1.125rem; }
  }