/* roulang page: index */
:root{
    --primary:#0E9F6E;
    --primary-dark:#0A7A52;
    --primary-light:#E8F5EF;
    --accent:#FF6B2C;
    --ink:#1A1F1D;
    --ink-soft:#4B5563;
    --ink-faint:#9CA3AF;
    --line:#E5E7EB;
    --paper:#FAFBFA;
    --deep-dark:#101614;
    --radius-card:16px;
    --shadow-sm:0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg:0 12px 32px rgba(0,0,0,0.09);
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
    color:var(--ink);
    background:var(--paper);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  .container{max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media(min-width:768px){.container{padding-left:32px;padding-right:32px;}}
  a{color:inherit;text-decoration:none;transition:color .2s;}
  img{max-width:100%;display:block;}
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--primary);color:#fff;font-weight:600;
    border-radius:9999px;padding:14px 32px;font-size:1rem;
    transition:background .2s,box-shadow .2s,transform .2s;
    box-shadow:0 4px 14px rgba(14,159,110,0.3);
    line-height:1.4;border:none;cursor:pointer;
  }
  .btn-primary:hover{background:var(--primary-dark);box-shadow:0 6px 20px rgba(14,159,110,0.4);transform:translateY(-2px);}
  .btn-primary:focus{outline:2px solid var(--primary-light);outline-offset:2px;}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;
    border:1.5px solid rgba(255,255,255,0.8);color:#fff;font-weight:500;
    border-radius:10px;padding:14px 30px;font-size:1rem;
    transition:background .2s,color .2s,transform .2s;
    background:transparent;cursor:pointer;
  }
  .btn-ghost:hover{background:#fff;color:var(--ink);transform:translateY(-2px);}
  .section-title{
    font-size:clamp(1.875rem,2.5vw + 0.5rem,2.75rem);
    font-weight:700;line-height:1.25;color:var(--ink);
    letter-spacing:-0.02em;
  }
  .section-sub{color:var(--ink-soft);font-size:1.0625rem;line-height:1.75;}
  .feature-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:2rem;transition:transform .25s,box-shadow .25s,border-color .25s;
    box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
  }
  .feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary);}
  .feature-card.dark{
    background:var(--deep-dark);border-color:var(--deep-dark);color:#fff;
  }
  .feature-card.dark:hover{border-color:var(--primary);box-shadow:0 16px 40px rgba(0,0,0,0.3);}
  .feature-card.dark .feature-desc{color:rgba(255,255,255,0.7);}
  .feature-card.dark .feature-link{color:#6EE7B7;}
  .feature-icon{
    width:46px;height:46px;border-radius:50%;
    background:var(--primary-light);display:flex;align-items:center;justify-content:center;
    color:var(--primary);font-size:1.25rem;
  }
  .feature-card.dark .feature-icon{background:rgba(255,107,44,0.2);color:var(--accent);}
  .badge-pill{
    display:inline-block;background:var(--primary);color:#fff;
    font-size:0.75rem;font-weight:500;padding:4px 12px;border-radius:9999px;
  }
  .tag-pill{
    display:inline-block;background:#E5E7EB;color:var(--ink-soft);
    font-size:0.75rem;padding:4px 12px;border-radius:9999px;
    transition:background .2s,color .2s;
  }
  .tag-pill:hover{background:var(--primary-light);color:var(--primary);}
  .news-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-sm);
    transition:transform .25s,box-shadow .25s,border-color .25s;
    display:flex;flex-direction:column;
  }
  .news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary);}
  .news-card .cover-wrap{position:relative;aspect-ratio:3/2;overflow:hidden;background:#F3F4F6;}
  .news-card .cover-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
  .news-card:hover .cover-wrap img{transform:scale(1.04);}
  .news-card .cover-badge{
    position:absolute;top:12px;left:12px;z-index:2;
  }
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:12px;
    transition:border-color .3s,box-shadow .3s;
  }
  .faq-item.open{border-color:var(--primary);box-shadow:0 4px 16px rgba(14,159,110,0.1);}
  .faq-answer{max-height:0;overflow:hidden;opacity:0;transition:max-height .3s ease,opacity .3s ease,padding .3s ease;}
  .faq-item.open .faq-answer{max-height:400px;opacity:1;padding:0 1.25rem 1.25rem;}
  .faq-icon{transition:transform .3s;display:inline-flex;width:24px;height:24px;align-items:center;justify-content:center;border-radius:50%;background:var(--primary-light);color:var(--primary);font-size:0.875rem;font-weight:700;flex-shrink:0;}
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .logo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .logo-item{
    display:flex;align-items:center;justify-content:center;height:72px;
    background:#fff;border:1px solid var(--line);border-radius:12px;
    filter:grayscale(1);opacity:0.5;transition:filter .3s,opacity .3s;
    font-weight:700;font-size:0.9375rem;color:var(--ink-soft);
    letter-spacing:0.04em;
  }
  .logo-item:hover{filter:grayscale(0);opacity:1;color:var(--primary);}
  .stat-number{
    font-size:clamp(2rem,2vw + 1rem,3rem);font-weight:800;
    line-height:1.1;font-variant-numeric:tabular-nums;color:var(--ink);
  }
  .check-item{display:flex;align-items:flex-start;gap:10px;}
  .check-icon{
    width:22px;height:22px;border-radius:50%;background:var(--primary);
    color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:0.6875rem;flex-shrink:0;margin-top:3px;
  }
  .footer-link{color:rgba(255,255,255,0.65);font-size:0.875rem;transition:color .2s;}
  .footer-link:hover{color:#fff;}
  .social-icon{
    width:36px;height:36px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.75);
    transition:background .2s,color .2s;
  }
  .social-icon:hover{background:var(--primary);color:#fff;}
  #sticky-cta{
    position:fixed;bottom:0;left:0;right:0;z-index:40;
    background:rgba(255,255,255,0.95);backdrop-filter:blur(8px);
    border-top:1px solid var(--line);
    transition:transform .4s ease,opacity .4s ease;
    transform:translateY(100%);opacity:0;
  }
  #sticky-cta.show{transform:translateY(0);opacity:1;}
  body.has-sticky{padding-bottom:72px;}
  .decorate-number{
    position:absolute;font-size:8rem;font-weight:800;color:rgba(0,0,0,0.04);
    line-height:1;top:-10px;right:20px;z-index:0;pointer-events:none;
    letter-spacing:-0.04em;
  }
  @media(max-width:767px){
    #mobile-menu{display:none;}
    #mobile-menu.open{display:block;}
    .logo-item{height:56px;font-size:0.8125rem;}
  }
  @media(min-width:768px){
    #mobile-menu{display:none !important;}
    .logo-grid{grid-template-columns:repeat(6,1fr);}
  }

/* roulang page: article */
:root {
  --primary: #0E9F6E;
  --primary-dark: #0A7A52;
  --primary-light: #E8F5EF;
  --energy: #FF6B2C;
  --ink: #1A1F1D;
  --ink-soft: #4B5563;
  --ink-mute: #9CA3AF;
  --line: #E5E7EB;
  --page-bg: #FAFBFA;
  --deep: #101614;
  --radius-card: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif; background: var(--page-bg); color: var(--ink); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

.section-pad { padding: clamp(4rem, 8vw, 7rem) 0; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.btn-pill { display: inline-flex; align-items: center; gap: .5rem; padding: .75rem 1.75rem; border-radius: 9999px; font-weight: 600; transition: all .25s ease; font-size: .9375rem; line-height: 1.2; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(14,159,110,0.25); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(14,159,110,0.35); }
.btn-outline { border: 1.5px solid rgba(255,255,255,0.8); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); }
.btn-ghost { color: var(--primary); font-weight: 600; font-size: .9375rem; display: inline-flex; align-items: center; gap: .375rem; }
.btn-ghost:hover { color: var(--primary-dark); gap: .625rem; }

.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,0.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(229,231,235,0.7); box-shadow: 0 1px 8px rgba(0,0,0,0.03); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo-wrap { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 36px; height: 36px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.logo-text { font-size: 1.25rem; font-weight: 800; color: var(--ink); letter-spacing: -0.01em; line-height: 1.1; }
.logo-sub { font-size: .6875rem; color: var(--ink-mute); font-weight: 400; margin-top: 2px; }

.nav-center { display: none; align-items: center; gap: 2rem; }
@media (min-width: 1024px) { .nav-center { display: flex; } }
.nav-link { font-size: .9375rem; font-weight: 500; color: var(--ink-soft); padding-bottom: 2px; border-bottom: 2px solid transparent; transition: color .2s ease, border-color .2s ease; }
.nav-link:hover { color: var(--primary); border-bottom-color: rgba(14,159,110,0.4); }
.nav-link.active { color: var(--primary); border-bottom-color: var(--primary); }

.header-actions { display: flex; align-items: center; gap: .75rem; }
.search-box { display: none; align-items: center; gap: .5rem; background: #F3F4F6; border-radius: 9999px; padding: .4375rem 1rem; min-width: 0; }
@media (min-width: 768px) { .search-box { display: flex; } }
.search-box input { border: none; background: transparent; font-size: .875rem; color: var(--ink); outline: none; width: 100%; min-width: 110px; }
.search-box input::placeholder { color: var(--ink-mute); }
.search-box:focus-within { background: #fff; box-shadow: 0 0 0 2px rgba(14,159,110,0.35); }
.btn-login { font-size: .875rem; color: var(--ink-soft); padding: .375rem .75rem; border-radius: 8px; transition: background .2s; }
.btn-login:hover { background: #F3F4F6; color: var(--ink); }
.btn-membership { background: var(--primary); color: #fff; font-size: .875rem; font-weight: 600; padding: .5rem 1.25rem; border-radius: 9999px; transition: all .25s ease; box-shadow: 0 2px 6px rgba(14,159,110,0.2); }
.btn-membership:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(14,159,110,0.3); }
.btn-hamburger { display: none; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; color: var(--ink); transition: background .2s; }
.btn-hamburger:hover { background: #F3F4F6; }
@media (max-width: 1023px) { .btn-hamburger { display: flex; } }
@media (max-width: 640px) { .btn-membership { display: none; } }

.mobile-menu { display: none; background: #fff; border-bottom: 1px solid var(--line); padding: 1rem 0; box-shadow: 0 8px 24px rgba(0,0,0,0.06); }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: .75rem 1.5rem; font-weight: 500; color: var(--ink-soft); border-left: 3px solid transparent; transition: all .2s; }
.mobile-menu a.active { color: var(--primary); border-left-color: var(--primary); background: var(--primary-light); }
.mobile-menu a:hover { color: var(--primary); background: #F9FAFB; }

.footer { background: #0C100E; padding: 4rem 0 6rem; }
@media (min-width: 768px) { .footer { padding: 4rem 0; } }
.footer h4 { color: #fff; font-weight: 600; font-size: .875rem; margin-bottom: 1rem; }
.footer p { color: #9CA3AF; font-size: .875rem; line-height: 1.7; }
.footer-link { color: #9CA3AF; font-size: .875rem; transition: color .2s; }
.footer-link:hover { color: var(--primary); }
.social-icon { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.08); display: inline-flex; align-items: center; justify-content: center; color: #9CA3AF; transition: all .25s; }
.social-icon:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

.faq-item { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: border-color .3s; }
.faq-item.open { border-color: var(--primary); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 1.125rem 1.5rem; font-weight: 600; color: var(--ink); cursor: pointer; font-size: .9375rem; transition: color .2s; }
.faq-question:hover { color: var(--primary); }
.faq-icon { width: 28px; height: 28px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 1rem; transition: transform .3s; flex-shrink: 0; }
.faq-item.open .faq-icon { transform: rotate(135deg); }
.faq-answer { max-height: 0; opacity: 0; overflow: hidden; transition: max-height .35s ease, opacity .3s ease; }
.faq-answer-inner { padding: 0 1.5rem 1.25rem; font-size: .875rem; color: var(--ink-soft); line-height: 1.7; }

.breadcrumb { padding: 1rem 0; background: #fff; border-bottom: 1px solid var(--line); font-size: .8125rem; color: var(--ink-mute); }
.breadcrumb a { color: var(--ink-mute); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 .375rem; color: #D1D5DB; }

.article-hero { background: #fff; border-bottom: 1px solid var(--line); padding: 2.5rem 0 2rem; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.5rem; font-size: .8125rem; color: var(--ink-mute); margin-top: 1rem; }
.article-badge { background: var(--primary-light); color: var(--primary); padding: .25rem .875rem; border-radius: 9999px; font-size: .75rem; font-weight: 600; }

.article-content { max-width: 780px; margin: 0 auto; }
.article-body { font-size: 1.0625rem; line-height: 1.9; color: #374151; }
.article-body p { margin-bottom: 1.4em; }
.article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 2em 0 .8em; color: var(--ink); line-height: 1.3; }
.article-body h3 { font-size: 1.25rem; font-weight: 600; margin: 1.8em 0 .7em; color: var(--ink); line-height: 1.35; }
.article-body blockquote { background: var(--primary-light); border-left: 4px solid var(--primary); padding: 1rem 1.5rem; border-radius: 0 12px 12px 0; margin: 1.5em 0; color: var(--ink-soft); font-size: .9375rem; }
.article-body img { border-radius: 12px; margin: 1.5em 0; }
.article-body figure { margin: 1.5em 0; }
.article-body figcaption { font-size: .8125rem; color: var(--ink-mute); text-align: center; margin-top: .5rem; }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: .875rem; border-radius: 10px; overflow: hidden; }
.article-body th { background: #F3F4F6; font-weight: 600; text-align: left; padding: .75rem 1rem; }
.article-body td { border-top: 1px solid var(--line); padding: .75rem 1rem; }
.article-body pre { background: #F8FAF9; border: 1px solid var(--line); border-radius: 12px; padding: 1.25rem; overflow-x: auto; font-size: .875rem; line-height: 1.7; }

.tag-list { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag-item { background: #F3F4F6; color: var(--ink-soft); font-size: .8125rem; padding: .375rem 1rem; border-radius: 9999px; transition: all .2s; }
.tag-item:hover { background: var(--primary-light); color: var(--primary); }

.related-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; transition: all .3s ease; }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.related-thumb { aspect-ratio: 3/2; overflow: hidden; background: #F3F4F6; position: relative; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-body { padding: 1.25rem; }
.related-body h3 { font-size: 1rem; font-weight: 600; line-height: 1.4; margin-bottom: .5rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-body p { font-size: .8125rem; color: var(--ink-mute); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.btn-back { display: inline-flex; align-items: center; gap: .5rem; color: var(--primary); font-weight: 600; border: 1.5px solid var(--primary); background: transparent; padding: .625rem 1.5rem; border-radius: 12px; transition: all .25s; font-size: .875rem; }
.btn-back:hover { background: var(--primary); color: #fff; transform: translateX(-4px); }

.bottom-bar { position: fixed; bottom: 0; left: 0; right: 0; z-index: 40; background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); border-top: 1px solid var(--line); transform: translateY(100%); transition: transform .4s ease; box-shadow: 0 -4px 20px rgba(0,0,0,0.08); }
.bottom-bar.visible { transform: translateY(0); }
.bottom-bar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
.bottom-bar-close { width: 28px; height: 28px; border-radius: 50%; background: #F3F4F6; color: var(--ink-soft); display: flex; align-items: center; justify-content: center; font-size: .8125rem; transition: all .2s; position: absolute; right: .5rem; top: .5rem; }
.bottom-bar-close:hover { background: #E5E7EB; color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* roulang page: category1 */
:root {
      --primary: #0E9F6E;
      --primary-dark: #0A7A52;
      --primary-light: #E8F5EF;
      --energy: #FF6B2C;
      --ink: #1A1F1D;
      --ink-soft: #4B5563;
      --muted: #9CA3AF;
      --line: #E5E7EB;
      --page-bg: #FAFBFA;
      --dark-block: #101614;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      line-height: 1.75;
      color: var(--ink);
      background: var(--page-bg);
      padding-bottom: 80px;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
    }

    input:focus {
      outline: none;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 32px;
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
    }

    /* ===== 页面H1区 ===== */
    .page-hero {
      background: linear-gradient(135deg, #E8F5EF 0%, #F0F7F3 60%, #FAFBFA 100%);
      border-bottom: 1px solid var(--line);
      position: relative;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(14, 159, 110, 0.08) 0%, transparent 70%);
      border-radius: 50%;
    }

    .page-hero::after {
      content: "01";
      position: absolute;
      right: 40px;
      bottom: -30px;
      font-size: 140px;
      font-weight: 800;
      color: rgba(14, 159, 110, 0.07);
      letter-spacing: -0.06em;
      line-height: 1;
      pointer-events: none;
    }

    @media (max-width: 768px) {
      .page-hero::after {
        font-size: 90px;
        right: 16px;
      }
    }

    .page-hero-inner {
      position: relative;
      z-index: 1;
      padding: 72px 0 64px;
    }

    @media (max-width: 768px) {
      .page-hero-inner {
        padding: 48px 0 44px;
      }
    }

    .page-hero h1 {
      font-size: clamp(1.875rem, 4vw + 0.5rem, 2.875rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.02em;
      color: var(--ink);
      margin-bottom: 16px;
    }

    .page-hero .hero-desc {
      max-width: 640px;
      color: var(--ink-soft);
      font-size: 1rem;
      line-height: 1.75;
    }

    .hero-tagline {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #fff;
      border: 1px solid rgba(14, 159, 110, 0.2);
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 9999px;
      margin-bottom: 20px;
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
    }

    /* ===== 卡片 ===== */
    .cat-card {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 16px;
      overflow: hidden;
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .cat-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 14px 28px rgba(0, 0, 0, 0.07);
      border-color: var(--primary);
    }

    .cat-card .card-img {
      aspect-ratio: 3/2;
      object-fit: cover;
      width: 100%;
      background: #f0f0f0;
    }

    .cat-card .card-body {
      padding: 1.25rem 1.5rem 1.5rem;
      flex: 1;
      display: flex;
      flex-direction: column;
    }

    .cat-card .card-title {
      font-size: 1.125rem;
      font-weight: 600;
      color: var(--ink);
      line-height: 1.4;
      margin: 4px 0 8px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .cat-card .card-desc {
      font-size: 0.875rem;
      color: var(--ink-soft);
      line-height: 1.65;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 12px;
      flex: 1;
    }

    .cat-card .card-link {
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: color 0.2s ease, gap 0.2s ease;
    }

    .cat-card .card-link:hover {
      color: var(--primary-dark);
      gap: 10px;
    }

    /* ===== 深色服务区 ===== */
    .service-feature {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      padding: 1.75rem 1.5rem;
      transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
      height: 100%;
    }

    .service-feature:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(14, 159, 110, 0.4);
      transform: translateY(-4px);
    }

    .service-feature .icon-wrap {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(255, 107, 44, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--energy);
      font-size: 1.125rem;
    }

    .service-feature h3 {
      font-size: 1.0625rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }

    .service-feature p {
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.6);
      line-height: 1.65;
    }

    /* ===== 流程步骤 ===== */
    .step-item {
      text-align: center;
      position: relative;
      padding: 0 16px;
    }

    .step-item .step-num {
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: var(--primary-light);
      border: 2px solid var(--primary);
      color: var(--primary);
      font-size: 1.25rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      position: relative;
      z-index: 1;
    }

    .step-item::before {
      content: "";
      position: absolute;
      top: 32px;
      left: calc(50% + 48px);
      right: calc(-50% + 48px);
      height: 2px;
      background: repeating-linear-gradient(90deg, #d1d5db 0 6px, transparent 6px 12px);
    }

    @media (max-width: 768px) {
      .step-item::before {
        display: none;
      }
    }

    .step-item h3 {
      font-size: 1.0625rem;
      font-weight: 600;
      color: var(--ink);
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.875rem;
      color: var(--ink-soft);
      line-height: 1.65;
      max-width: 280px;
      margin: 0 auto;
    }

    /* ===== FAQ ===== */
    .faq-item {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 12px;
      overflow: hidden;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 4px 16px rgba(14, 159, 110, 0.08);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--ink);
      text-align: left;
      transition: color 0.2s ease;
      background: transparent;
    }

    .faq-question:hover {
      color: var(--primary);
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
      transition: transform 0.3s ease, background 0.3s ease;
      flex-shrink: 0;
    }

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

    .faq-answer {
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, opacity 0.35s ease, padding 0.35s ease;
      padding: 0 20px;
      font-size: 0.875rem;
      color: var(--ink-soft);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
      opacity: 1;
      padding: 0 20px 20px;
    }

    /* ===== 页脚 ===== */
    .footer-link {
      color: #9CA3AF;
      font-size: 0.875rem;
      transition: color 0.3s ease;
    }

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

    .social-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: #1F2937;
      color: #9CA3AF;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .social-icon:hover {
      background: var(--primary);
      color: #fff;
    }

    /* ===== 底部固定转化条 ===== */
    #bottom-bar {
      transition: transform 0.5s ease, opacity 0.5s ease;
    }

    #bottom-bar.hidden-bar {
      transform: translateY(120%);
      opacity: 0;
      pointer-events: none;
    }

    /* ===== 移动端菜单 ===== */
    #mobile-menu {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      background: #fff;
      border-bottom: 1px solid var(--line);
    }

    #mobile-menu.open {
      max-height: 400px;
    }

    #mobile-menu a {
      display: block;
      padding: 14px 20px;
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--ink-soft);
      border-bottom: 1px solid #f3f4f6;
      transition: color 0.2s ease, background 0.2s ease;
    }

    #mobile-menu a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

    #mobile-menu a.active {
      color: var(--primary);
      background: var(--primary-light);
      font-weight: 600;
    }

    /* ===== 通用 ===== */
    .section-pad {
      padding: clamp(4rem, 8vw, 6rem) 0;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 500;
      line-height: 1.4;
    }

    .card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(14, 159, 110, 0.92);
      color: #fff;
      padding: 4px 14px;
      border-radius: 9999px;
      font-size: 0.75rem;
      font-weight: 500;
      backdrop-filter: blur(4px);
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
    }

    .image-wrap {
      position: relative;
      overflow: hidden;
      background: #f3f4f6;
      border-radius: 12px;
    }

    .image-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    @media (max-width: 768px) {
      body {
        padding-bottom: 88px;
      }
      .container {
        padding: 0 16px;
      }
    }

    @media (max-width: 520px) {
      .page-hero h1 {
        font-size: 1.625rem;
      }
    }

/* roulang page: category2 */
:root {
            --primary: #0E9F6E;
            --primary-dark: #0A7A52;
            --primary-light: #E8F5EF;
            --accent: #FF6B2C;
            --ink: #1A1F1D;
            --ink-soft: #4B5563;
            --muted: #9CA3AF;
            --line: #E5E7EB;
            --page-bg: #FAFBFA;
            --dark-bg: #101614;
            --radius: 16px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 24px -6px rgba(0, 0, 0, 0.12);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--page-bg);
            color: var(--ink);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.8);
        }

        .hero {
            position: relative;
            padding: 6rem 0 4rem;
            color: #fff;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            z-index: -2;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(16, 22, 20, 0.88) 0%, rgba(16, 22, 20, 0.65) 55%, rgba(16, 22, 20, 0.35) 100%);
            z-index: -1;
        }

        .hero::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.08);
            z-index: 0;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            background: rgba(232, 245, 239, 0.25);
            border: 1px solid rgba(14, 159, 110, 0.4);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.375rem 1rem;
            border-radius: 9999px;
            letter-spacing: 0.02em;
        }

        .badge-green {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 9999px;
            padding: 0.25rem 0.875rem;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            border-radius: 9999px;
            padding: 0.75rem 2rem;
            transition: all 0.25s ease;
            box-shadow: 0 4px 12px rgba(14, 159, 110, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 159, 110, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(14, 159, 110, 0.3);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            border-radius: 9999px;
            padding: 0.75rem 2rem;
            border: 1.5px solid rgba(255, 255, 255, 0.6);
            transition: all 0.25s ease;
        }

        .btn-outline:hover {
            background: #fff;
            color: var(--ink);
            border-color: #fff;
        }

        .btn-outline-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--ink);
            font-weight: 600;
            font-size: 0.9375rem;
            border-radius: 9999px;
            padding: 0.75rem 2rem;
            border: 1.5px solid var(--line);
            transition: all 0.25s ease;
        }

        .btn-outline-dark:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .section-title {
            font-size: clamp(1.875rem, 2.5vw + 0.5rem, 2.75rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            color: var(--ink-soft);
            line-height: 1.75;
        }

        .mini-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 2rem;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

        .mini-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(14, 159, 110, 0.4);
        }

        .course-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }

        .course-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(14, 159, 110, 0.4);
        }

        .course-card-img {
            aspect-ratio: 3 / 2;
            width: 100%;
            object-fit: cover;
            background: #f3f4f6;
        }

        .step-item {
            position: relative;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 1.75rem;
            transition: all 0.3s ease;
        }

        .step-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            letter-spacing: -0.02em;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 0 1.5rem;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(14, 159, 110, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 0;
            gap: 1rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--ink);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease, background 0.3s ease;
            color: var(--primary);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
            font-size: 0.9375rem;
            color: var(--ink-soft);
            line-height: 1.75;
        }

        .faq-answer-inner {
            padding-bottom: 1.25rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            opacity: 1;
        }

        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #9CA3AF;
            transition: all 0.25s ease;
        }

        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-link {
            color: #9CA3AF;
            font-size: 0.875rem;
            transition: color 0.2s ease;
        }

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

        .logo-wall-logo {
            filter: grayscale(1) opacity(0.55);
            transition: all 0.3s ease;
            cursor: default;
        }

        .logo-wall-logo:hover {
            filter: grayscale(0) opacity(1);
        }

        @media (max-width: 768px) {
            .hero {
                padding: 4.5rem 0 3rem;
            }
            .hero h1 {
                font-size: 2.25rem;
            }
            .mini-card {
                padding: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.875rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.625rem 1.25rem;
                font-size: 0.875rem;
            }
            .step-num {
                font-size: 1.75rem;
            }
        }