/* roulang page: index */
:root{
      --bg:#f5f9fd;
      --surface:#ffffff;
      --surface-soft:#f8fbff;
      --primary:#2f6fd6;
      --primary-deep:#1f4f9c;
      --accent:#d9e7fb;
      --text:#18304b;
      --muted:#6e7f95;
      --line:#dbe4f0;
      --shadow:0 14px 40px rgba(18,36,82,.08);
      --shadow-hover:0 18px 40px rgba(47,111,214,.12);
      --radius:14px;
      --radius-sm:10px;
      --max:1200px;
    }
    html{scroll-behavior:smooth;}
    body{
      margin:0;
      color:var(--text);
      background:linear-gradient(180deg,#f8fbff 0%,#f5f9fd 100%);
      letter-spacing:0;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    *{box-sizing:border-box}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    ::selection{background:#cfe0ff;color:#12315a}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .surface{
      background:var(--surface);
      border:1px solid rgba(219,228,240,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .surface-soft{
      background:var(--surface-soft);
      border:1px solid var(--line);
      border-radius:var(--radius);
    }
    .section-gap{padding:28px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid var(--line);
      background:#fff;
      color:var(--primary-deep);
      font-size:13px;
      font-weight:700;
      box-shadow:0 6px 18px rgba(18,36,82,.04);
    }
    .section-title{
      font-size:clamp(22px,2.2vw,32px);
      line-height:1.2;
      letter-spacing:0;
      color:#10253f;
      font-weight:800;
    }
    .section-desc{
      color:var(--muted);
      line-height:1.8;
      font-size:15px;
      max-width:70ch;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      cursor:pointer;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover)}
    .btn:focus-visible,
    .nav-link:focus-visible,
    .summary:focus-visible,
    input:focus-visible{
      outline:2px solid rgba(47,111,214,.34);
      outline-offset:2px;
    }
    .btn-primary{
      background:var(--primary);
      color:#fff;
      border-color:var(--primary);
    }
    .btn-primary:hover{background:#2664c3;color:#fff}
    .btn-ghost{
      background:#fff;
      color:var(--primary-deep);
      border-color:var(--line);
    }
    .btn-ghost:hover{border-color:#b9c8dd;background:#f8fbff}
    .btn-soft{
      background:#edf4ff;
      color:var(--primary-deep);
      border-color:#d8e6fb;
    }
    .btn-soft:hover{background:#e4efff}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:#edf4ff;
      color:var(--primary-deep);
      border:1px solid #d8e6fb;
      font-size:12px;
      font-weight:700;
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:10px 2px;
      color:#46607d;
      font-weight:700;
      transition:color .2s ease;
    }
    .nav-link:hover{color:var(--primary-deep)}
    .nav-link[data-active="true"]{
      color:var(--primary-deep);
    }
    .nav-link[data-active="true"]::after{
      content:"";
      position:absolute;
      left:0;
      right:0;
      bottom:0;
      height:2px;
      border-radius:999px;
      background:var(--primary);
    }
    .search{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:min(320px,100%);
      padding:7px 10px 7px 14px;
      border-radius:999px;
      border:1px solid var(--line);
      background:#fff;
      box-shadow:0 8px 24px rgba(18,36,82,.04);
    }
    .search input{
      width:100%;
      border:none;
      background:transparent;
      color:var(--text);
      outline:none;
      min-width:0;
    }
    .search input::placeholder{color:#8a99ad}
    .search button{
      border:none;
      background:var(--primary);
      color:#fff;
      border-radius:999px;
      height:34px;
      padding:0 14px;
      font-weight:700;
      transition:background .2s ease, transform .2s ease;
    }
    .search button:hover{background:#2664c3;transform:translateY(-1px)}
    .mini-stat{
      display:flex;
      flex-direction:column;
      gap:4px;
      padding:14px 16px;
      border-radius:12px;
      background:#f8fbff;
      border:1px solid var(--line);
    }
    .mini-stat strong{
      font-size:18px;
      line-height:1;
      color:#122a45;
      letter-spacing:0;
    }
    .mini-stat span{
      font-size:12px;
      color:var(--muted);
    }
    .progress-ring{
      --progress:86;
      width:110px;
      aspect-ratio:1/1;
      border-radius:50%;
      background:
        conic-gradient(var(--primary) calc(var(--progress) * 1%), #e7eef9 0);
      display:grid;
      place-items:center;
      position:relative;
    }
    .progress-ring::after{
      content:"";
      position:absolute;
      inset:12px;
      border-radius:50%;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.5);
    }
    .progress-ring > div{
      position:relative;
      z-index:1;
      text-align:center;
    }
    .progress-ring strong{
      display:block;
      font-size:24px;
      line-height:1;
      color:#12315a;
      font-weight:800;
    }
    .progress-ring span{
      display:block;
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
      font-weight:700;
    }
    .mock-panel{
      border-radius:16px;
      border:1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.94), rgba(248,251,255,.96));
      box-shadow:0 14px 30px rgba(18,36,82,.06);
    }
    .mock-bar{height:10px;border-radius:999px;background:#e6edf8}
    .mock-chip{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:#edf4ff;
      border:1px solid #d8e6fb;
      color:#1f4f9c;
      font-size:12px;
      font-weight:700;
    }
    .scrollbar-hide{
      scrollbar-width:none;
      -ms-overflow-style:none;
    }
    .scrollbar-hide::-webkit-scrollbar{display:none}
    .summary{
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      cursor:pointer;
      padding:0;
      color:#132a44;
      font-weight:700;
      outline:none;
    }
    .summary::-webkit-details-marker{display:none}
    .chev{transition:transform .2s ease}
    details[open] .chev{transform:rotate(180deg)}
    .faq-body{
      color:var(--muted);
      line-height:1.8;
      font-size:14px;
      padding-top:14px;
    }
    .link-row a{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:14px 0;
      border-bottom:1px solid var(--line);
      transition:background .2s ease;
    }
    .link-row a:hover{background:rgba(239,246,255,.65)}
    .link-row a:last-child{border-bottom:none}
    .link-row time{
      flex:0 0 auto;
      color:var(--muted);
      font-size:12px;
      margin-top:2px;
    }
    .footer-link{
      display:inline-flex;
      align-items:center;
      color:#54708f;
      transition:color .2s ease;
    }
    .footer-link:hover{color:var(--primary-deep)}
    .section-sep{border-top:1px solid rgba(219,228,240,.9)}
    .glass-strip{
      border:1px solid var(--line);
      background:#fff;
      border-radius:14px;
      box-shadow:var(--shadow);
    }
    @media (max-width: 1024px){
      .container{width:min(var(--max),calc(100% - 24px))}
    }
    @media (max-width: 768px){
      .section-gap{padding:22px 0}
      .search{min-width:0;width:100%}
      .summary{gap:10px}
    }
    @media (max-width: 520px){
      .container{width:min(var(--max),calc(100% - 16px))}
      .btn{width:100%}
    }

/* roulang page: category1 */
:root {
      --bg: #f4f7fb;
      --surface: #ffffff;
      --line: #dbe5f0;
      --line-strong: #c7d5e7;
      --text: #162234;
      --muted: #66758b;
      --brand: #2d67d6;
      --brand-strong: #214f9c;
      --brand-soft: #eef5ff;
      --shadow: 0 12px 30px rgba(18, 38, 70, 0.08);
      --radius: 14px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

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

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    ::selection {
      background: #dbe9ff;
      color: #17335e;
    }

    .container {
      width: min(1180px, calc(100% - 2rem));
      margin-inline: auto;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0.55rem 0.95rem;
      border-radius: 999px;
      color: #415067;
      font-weight: 700;
      transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
    }

    .nav-link:hover,
    .nav-link[data-active="true"] {
      background: var(--brand-soft);
      color: var(--brand-strong);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.45rem;
      min-height: 44px;
      padding: 0.62rem 1rem;
      border-radius: 12px;
      border: 1px solid transparent;
      font-weight: 700;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn-primary {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 10px 22px rgba(45, 103, 214, 0.18);
    }

    .btn-primary:hover {
      background: var(--brand-strong);
      box-shadow: 0 14px 28px rgba(33, 79, 156, 0.22);
    }

    .btn-ghost {
      background: #fff;
      border-color: var(--line);
      color: var(--text);
    }

    .btn-ghost:hover {
      background: #f9fbff;
      border-color: #c4d5ef;
    }

    .search {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      width: 100%;
      min-height: 46px;
      padding: 0.55rem 0.8rem;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #fff;
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.04);
    }

    .search input {
      min-width: 0;
      flex: 1;
      border: 0;
      outline: 0;
      background: transparent;
      color: var(--text);
    }

    .search input::placeholder {
      color: #94a3b8;
    }

    .search button {
      flex: 0 0 auto;
      border: 0;
      border-radius: 999px;
      background: var(--brand);
      color: #fff;
      padding: 0.55rem 0.95rem;
      font-weight: 700;
    }

    .field {
      width: 100%;
      min-height: 46px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fff;
      padding: 0 0.9rem;
      color: var(--text);
      outline: none;
      box-shadow: 0 8px 20px rgba(15, 23, 42, 0.03);
      appearance: none;
    }

    .field:focus,
    .search:focus-within,
    .btn:focus-visible,
    .nav-link:focus-visible,
    .footer-link:focus-visible,
    summary:focus-visible {
      outline: none;
      box-shadow: 0 0 0 4px rgba(45, 103, 214, 0.12);
    }

    .field:focus {
      border-color: #8eb0f6;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      min-height: 32px;
      padding: 0.28rem 0.72rem;
      border-radius: 999px;
      background: var(--brand-soft);
      color: var(--brand-strong);
      font-size: 0.82rem;
      font-weight: 700;
    }

    .card-soft,
    .panel,
    .faq details {
      background: rgba(255, 255, 255, 0.97);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .card-soft {
      transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
    }

    .card-soft:hover {
      transform: translateY(-2px);
      border-color: #c9d8ea;
      box-shadow: 0 16px 34px rgba(18, 38, 70, 0.1);
    }

    .footer-link {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      color: #66758b;
      transition: color 0.18s ease;
    }

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

    .faq details {
      overflow: hidden;
    }

    .faq details[open] {
      border-color: #c7d8f3;
    }

    .faq summary {
      list-style: none;
      cursor: pointer;
      padding: 1rem 1rem 1rem 0;
      font-weight: 700;
      color: var(--text);
    }

    .faq summary::-webkit-details-marker {
      display: none;
    }

    .faq .answer {
      padding: 0 0 1rem;
      color: var(--muted);
      font-size: 0.96rem;
      line-height: 1.8;
    }

    .scrollbar-hide {
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

    .scrollbar-hide::-webkit-scrollbar {
      display: none;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(100% - 1.25rem, 1180px);
      }
    }

    @media (max-width: 768px) {
      .nav-link {
        padding: 0.5rem 0.8rem;
        min-height: 38px;
      }

      .search {
        border-radius: 18px;
        flex-wrap: wrap;
      }

      .search button {
        width: 100%;
      }
    }

    @media (max-width: 520px) {
      .btn {
        width: 100%;
      }

      .search input {
        width: 100%;
      }
    }

/* roulang page: category2 */
:root{
  --brand-50:#eff6ff;
  --brand-100:#dbeafe;
  --brand-200:#bfdbfe;
  --brand-500:#3b82f6;
  --brand-600:#2563eb;
  --brand-700:#1d4ed8;
  --brand-800:#1e40af;
  --bg:#f8fafc;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --text:#0f172a;
  --muted:#64748b;
  --line:#dbe4f0;
  --shadow:0 18px 40px rgba(15,23,42,.08);
  --shadow-soft:0 8px 20px rgba(15,23,42,.05);
  --radius:8px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:linear-gradient(180deg,#f8fbff 0%,#f5f7fb 100%);
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.6;
}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid rgba(37,99,235,.35);outline-offset:2px}
.container{
  width:min(1200px,calc(100% - 2rem));
  margin:0 auto;
}
@media (min-width:640px){
  .container{width:min(1200px,calc(100% - 3rem))}
}
@media (min-width:1024px){
  .container{width:min(1200px,calc(100% - 4rem))}
}
.scrollbar-hide{
  -ms-overflow-style:none;
  scrollbar-width:none;
}
.scrollbar-hide::-webkit-scrollbar{display:none}
.panel{
  background:rgba(255,255,255,.96);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  border-radius:var(--radius);
}
.card{
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  border-radius:var(--radius);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(15,23,42,.08);
  border-color:#cfe0ff;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  border:1px solid #cfe0ff;
  background:#eff6ff;
  color:var(--brand-700);
  padding:.35rem .65rem;
  border-radius:999px;
  font-size:.78rem;
  font-weight:700;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55rem;
  height:44px;
  padding:0 1rem;
  border-radius:var(--radius);
  border:1px solid transparent;
  font-weight:700;
  white-space:nowrap;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn-primary{
  background:var(--brand-600);
  color:#fff;
  box-shadow:0 12px 24px rgba(37,99,235,.18);
}
.btn-primary:hover{
  background:var(--brand-700);
  box-shadow:0 16px 28px rgba(37,99,235,.22);
}
.btn-ghost{
  background:#fff;
  color:var(--brand-700);
  border-color:var(--line);
}
.btn-ghost:hover{
  background:#eff6ff;
  border-color:#cfe0ff;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.7rem .95rem;
  border-radius:var(--radius);
  color:#475569;
  font-weight:700;
  white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,transform .18s ease,border-color .18s ease;
}
.nav-link:hover{
  background:#eff6ff;
  color:var(--brand-700);
  transform:translateY(-1px);
}
.nav-link[data-active="true"]{
  background:#dbeafe;
  color:var(--brand-700);
  box-shadow:inset 0 0 0 1px rgba(37,99,235,.08);
}
.search{
  display:flex;
  align-items:center;
  gap:.65rem;
  width:100%;
  border:1px solid var(--line);
  background:#fff;
  border-radius:12px;
  padding:.68rem .8rem;
  box-shadow:var(--shadow-soft);
}
.search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  color:var(--text);
  outline:none;
}
.search input::placeholder{color:#94a3b8}
.search button{
  border:0;
  background:var(--brand-600);
  color:#fff;
  border-radius:10px;
  padding:.58rem .95rem;
  font-weight:700;
}
.search button:hover{background:var(--brand-700)}
.footer-link{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:.65rem .8rem;
  border:1px solid transparent;
  border-radius:var(--radius);
  color:#64748b;
  font-weight:700;
  background:#fff;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.footer-link:hover{
  color:var(--brand-700);
  background:#eff6ff;
  border-color:#dbeafe;
  transform:translateY(-1px);
}
.section{padding:4.5rem 0}
.section-title{
  font-size:1.85rem;
  line-height:1.25;
  font-weight:800;
}
.section-copy{
  color:var(--muted);
  line-height:1.8;
}
.metric-bar{
  height:8px;
  background:#eff4fb;
  border:1px solid #e6edf8;
  border-radius:999px;
  overflow:hidden;
}
.metric-bar span{
  display:block;
  height:100%;
  border-radius:999px;
  background:var(--brand-500);
}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  box-shadow:var(--shadow-soft);
}
.faq-item + .faq-item{margin-top:.75rem}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem 1.1rem;
  font-weight:700;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .faq-body{
  padding:0 1.1rem 1rem;
  color:var(--muted);
  line-height:1.8;
}
.faq-arrow{
  transition:transform .18s ease;
  flex-shrink:0;
  color:var(--brand-700);
}
.faq-item[open] .faq-arrow{transform:rotate(180deg)}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  border:1px solid #dbe4f0;
  background:#fff;
  color:#475569;
  padding:.35rem .7rem;
  border-radius:999px;
  font-size:.82rem;
  font-weight:700;
}
.tag:hover{
  border-color:#cfe0ff;
  background:#eff6ff;
  color:var(--brand-700);
}
.quote-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1rem 1.05rem;
  box-shadow:var(--shadow-soft);
}
.quote-card p{
  color:#334155;
  line-height:1.8;
}
.progress-ring{
  position:relative;
  display:grid;
  place-items:center;
  width:10.5rem;
  height:10.5rem;
  border-radius:999px;
}
.progress-ring::before{
  content:"";
  position:absolute;
  inset:0;
  border-radius:999px;
  background:conic-gradient(#2563eb 0 82%, #dbe4f0 82% 100%);
}
.progress-ring::after{
  content:"";
  position:absolute;
  inset:10px;
  border-radius:999px;
  background:#fff;
  box-shadow:inset 0 1px 0 rgba(15,23,42,.04);
}
.progress-ring > div{
  position:relative;
  z-index:1;
  text-align:center;
}
.mobile-panel{
  border-top:1px solid var(--line);
  background:#f8fbff;
  padding:1rem;
  border-radius:var(--radius);
}
@media (max-width: 1024px){
  .section{padding:3.25rem 0}
  .section-title{font-size:1.55rem}
}
@media (max-width: 768px){
  .search{
    padding:.62rem .75rem;
  }
  .search button{
    padding:.58rem .75rem;
  }
}
@media (max-width: 520px){
  .section-title{font-size:1.4rem}
}