/* roulang page: index */
:root{
      --bg:#050816;
      --bg2:#0b1120;
      --card:rgba(15, 23, 42, .72);
      --card-strong:rgba(15, 23, 42, .92);
      --line:rgba(148, 163, 184, .14);
      --line-strong:rgba(148, 163, 184, .24);
      --text:#e5eefb;
      --muted:#94a3b8;
      --muted-2:#64748b;
      --brand:#8b5cf6;
      --aqua:#22d3ee;
      --rose:#fb7185;
      --shadow:0 24px 80px rgba(2, 6, 23, .45);
      --radius:28px;
      --radius-sm:18px;
      --transition: all .25s ease;
    }

    html{
      scroll-behavior:smooth;
    }

    *{
      box-sizing:border-box;
    }

    body{
      margin:0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background:
        radial-gradient(circle at top left, rgba(139, 92, 246, .14), transparent 32%),
        radial-gradient(circle at top right, rgba(34, 211, 238, .10), transparent 30%),
        linear-gradient(180deg, #03060f 0%, #050816 42%, #04060f 100%);
      color:var(--text);
      line-height:1.7;
      overflow-x:hidden;
    }

    body::selection{
      background:rgba(139, 92, 246, .35);
      color:#fff;
    }

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

    a{
      color:inherit;
      text-decoration:none;
      transition:var(--transition);
    }

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

    button{
      cursor:pointer;
    }

    .page-bg{
      position:fixed;
      inset:0;
      z-index:-2;
      pointer-events:none;
      background:
        linear-gradient(120deg, rgba(255,255,255,.03) 0 1px, transparent 1px 100%),
        linear-gradient(90deg, rgba(255,255,255,.02) 0 1px, transparent 1px 100%);
      background-size: 56px 56px, 56px 56px;
      opacity:.28;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.35) 65%, transparent 100%);
    }

    .glass-nav{
      background:rgba(8, 14, 30, .58);
      border:1px solid rgba(148, 163, 184, .16);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      box-shadow:0 20px 60px rgba(2, 6, 23, .34);
      transition:var(--transition);
    }

    .site-header.scrolled .glass-nav{
      background:rgba(6, 10, 24, .90);
      border-color:rgba(148, 163, 184, .22);
      box-shadow:0 22px 70px rgba(2, 6, 23, .50);
    }

    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      padding:.68rem 1rem;
      border-radius:999px;
      color:#dce6f6;
      font-weight:600;
      letter-spacing:.01em;
      transition:var(--transition);
    }

    .nav-link:hover,
    .nav-link:focus-visible{
      background:rgba(255,255,255,.06);
      color:#fff;
      transform:translateY(-1px);
      outline:none;
    }

    .nav-link[aria-current="page"]{
      background:linear-gradient(135deg, rgba(139, 92, 246, .22), rgba(34, 211, 238, .16));
      box-shadow:inset 0 0 0 1px rgba(139, 92, 246, .26);
      color:#fff;
    }

    .brand-mark{
      display:flex;
      align-items:center;
      gap:.85rem;
      font-weight:800;
      letter-spacing:.02em;
    }

    .brand-badge{
      width:2.6rem;
      height:2.6rem;
      display:grid;
      place-items:center;
      border-radius:18px;
      background:
        radial-gradient(circle at 35% 35%, rgba(255,255,255,.34), transparent 35%),
        linear-gradient(135deg, rgba(139, 92, 246, .95), rgba(34, 211, 238, .75));
      box-shadow:0 16px 40px rgba(139, 92, 246, .24);
      color:#fff;
      font-size:1rem;
      flex:none;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:.55rem;
      border-radius:999px;
      padding:.46rem .9rem;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(148, 163, 184, .16);
      color:#dbe7fb;
      font-size:.92rem;
      backdrop-filter:blur(12px);
      -webkit-backdrop-filter:blur(12px);
    }

    .section-shell{
      position:relative;
      padding:4.5rem 0;
    }

    .section-shell:first-of-type{
      padding-top:2.5rem;
    }

    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      padding:.42rem .8rem;
      border-radius:999px;
      font-size:.88rem;
      color:#dce8fb;
      border:1px solid rgba(148, 163, 184, .16);
      background:rgba(255,255,255,.05);
    }

    .section-title{
      margin:1rem 0 .8rem;
      font-size:clamp(1.7rem, 3vw, 2.65rem);
      line-height:1.12;
      letter-spacing:-.03em;
    }

    .section-copy{
      max-width:48rem;
      color:var(--muted);
      font-size:1.02rem;
    }

    .panel{
      background:linear-gradient(180deg, rgba(15, 23, 42, .78), rgba(8, 14, 30, .92));
      border:1px solid rgba(148, 163, 184, .14);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
    }

    .panel-soft{
      background:linear-gradient(180deg, rgba(15, 23, 42, .64), rgba(15, 23, 42, .40));
      border:1px solid rgba(148, 163, 184, .12);
      border-radius:24px;
      box-shadow:0 18px 40px rgba(2, 6, 23, .28);
    }

    .card-hover{
      transition:var(--transition);
    }

    .card-hover:hover{
      transform:translateY(-4px);
      border-color:rgba(139, 92, 246, .30);
      box-shadow:0 20px 45px rgba(2, 6, 23, .36);
    }

    .btn-primary,
    .btn-secondary,
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      border-radius:999px;
      padding:.95rem 1.35rem;
      font-weight:700;
      transition:var(--transition);
      border:1px solid transparent;
      user-select:none;
      white-space:nowrap;
    }

    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--brand), var(--aqua));
      box-shadow:0 18px 42px rgba(139, 92, 246, .24);
    }

    .btn-primary:hover,
    .btn-primary:focus-visible{
      transform:translateY(-2px);
      box-shadow:0 22px 52px rgba(139, 92, 246, .30);
      outline:none;
    }

    .btn-secondary{
      background:rgba(255,255,255,.05);
      color:#edf4ff;
      border-color:rgba(148, 163, 184, .18);
    }

    .btn-secondary:hover,
    .btn-secondary:focus-visible,
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      transform:translateY(-2px);
      background:rgba(255,255,255,.08);
      border-color:rgba(148, 163, 184, .30);
      outline:none;
    }

    .btn-ghost{
      background:transparent;
      color:#d9e6f8;
      border-color:rgba(148, 163, 184, .18);
    }

    .chip{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.42rem .7rem;
      border-radius:999px;
      border:1px solid rgba(148, 163, 184, .15);
      background:rgba(255,255,255,.04);
      color:#dbe7fb;
      font-size:.85rem;
    }

    .soft-border{
      border:1px solid rgba(148, 163, 184, .14);
    }

    .icon-badge{
      width:2.85rem;
      height:2.85rem;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(139, 92, 246, .18), rgba(34, 211, 238, .16));
      border:1px solid rgba(139, 92, 246, .22);
      color:#fff;
      flex:none;
    }

    .mini-stat{
      padding:1rem 1.05rem;
      border-radius:22px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(148, 163, 184, .12);
    }

    .mini-stat strong{
      display:block;
      font-size:1.2rem;
      line-height:1.1;
      margin-bottom:.3rem;
    }

    .mini-stat span{
      color:var(--muted);
      font-size:.9rem;
    }

    .topic-pill{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.68rem .92rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(148, 163, 184, .14);
      color:#eaf2ff;
      transition:var(--transition);
    }

    .topic-pill:hover{
      background:rgba(139, 92, 246, .12);
      border-color:rgba(139, 92, 246, .28);
      transform:translateY(-2px);
    }

    .news-item{
      display:block;
      padding:1rem 1rem 1rem 1.05rem;
      border-radius:20px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(148, 163, 184, .10);
      transition:var(--transition);
    }

    .news-item:hover{
      background:rgba(255,255,255,.07);
      border-color:rgba(139, 92, 246, .24);
      transform:translateX(3px);
    }

    .news-item small,
    .muted{
      color:var(--muted);
    }

    .price-card{
      position:relative;
      overflow:hidden;
      padding:1.5rem;
      border-radius:28px;
      border:1px solid rgba(148, 163, 184, .14);
      background:linear-gradient(180deg, rgba(15, 23, 42, .82), rgba(8, 14, 30, .96));
      box-shadow:0 18px 44px rgba(2, 6, 23, .30);
      transition:var(--transition);
    }

    .price-card:hover{
      transform:translateY(-4px);
      border-color:rgba(34, 211, 238, .22);
      box-shadow:0 22px 58px rgba(2, 6, 23, .42);
    }

    .price-card.featured{
      border-color:rgba(139, 92, 246, .40);
      box-shadow:0 26px 70px rgba(139, 92, 246, .14);
      background:
        radial-gradient(circle at top right, rgba(139, 92, 246, .16), transparent 34%),
        linear-gradient(180deg, rgba(16, 24, 46, .90), rgba(8, 14, 30, .96));
    }

    .price-tag{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.35rem .62rem;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(148, 163, 184, .14);
      color:#dde9fb;
      font-size:.78rem;
      letter-spacing:.02em;
    }

    .step-card{
      padding:1.35rem;
      border-radius:24px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(148, 163, 184, .12);
      transition:var(--transition);
    }

    .step-card:hover{
      transform:translateY(-3px);
      background:rgba(255,255,255,.06);
      border-color:rgba(139, 92, 246, .24);
    }

    .step-index{
      width:2.35rem;
      height:2.35rem;
      display:grid;
      place-items:center;
      border-radius:999px;
      background:linear-gradient(135deg, rgba(139, 92, 246, .24), rgba(34, 211, 238, .18));
      border:1px solid rgba(139, 92, 246, .18);
      font-weight:800;
      margin-bottom:1rem;
    }

    details.faq{
      padding:1rem 1.15rem;
      border-radius:22px;
      border:1px solid rgba(148, 163, 184, .12);
      background:rgba(255,255,255,.04);
      transition:var(--transition);
    }

    details.faq[open]{
      border-color:rgba(139, 92, 246, .24);
      background:rgba(255,255,255,.06);
    }

    details.faq summary{
      list-style:none;
      cursor:pointer;
      font-weight:700;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
    }

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

    details.faq summary::after{
      content:"+";
      flex:none;
      width:2rem;
      height:2rem;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.06);
      color:#dce7fb;
      font-size:1.1rem;
      transition:var(--transition);
    }

    details.faq[open] summary::after{
      content:"–";
      background:rgba(139, 92, 246, .16);
    }

    details.faq p{
      color:var(--muted);
      margin:.85rem 0 .05rem;
    }

    .footer-link{
      color:#dbe7fb;
      transition:var(--transition);
    }

    .footer-link:hover{
      color:#fff;
      opacity:.95;
    }

    .footer-note{
      color:var(--muted-2);
    }

    .toast{
      position:fixed;
      right:1rem;
      bottom:1rem;
      z-index:60;
      min-width:240px;
      max-width:min(90vw, 360px);
      padding:1rem 1.1rem;
      border-radius:18px;
      background:rgba(8, 14, 30, .94);
      border:1px solid rgba(148, 163, 184, .16);
      box-shadow:0 20px 54px rgba(2, 6, 23, .48);
      transform:translateY(18px);
      opacity:0;
      pointer-events:none;
      transition:var(--transition);
    }

    .toast.show{
      transform:translateY(0);
      opacity:1;
    }

    @media (max-width: 1024px){
      .section-shell{
        padding:4rem 0;
      }
    }

    @media (max-width: 768px){
      .section-shell{
        padding:3.3rem 0;
      }

      .brand-mark{
        gap:.65rem;
      }

      .glass-nav{
        border-radius:24px;
      }
    }

    @media (max-width: 640px){
      .nav-link{
        width:100%;
        justify-content:flex-start;
      }

      .btn-primary,
      .btn-secondary,
      .btn-ghost{
        width:100%;
      }

      .section-title{
        letter-spacing:-.025em;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #060816;
      --bg-soft: #0b1022;
      --panel: rgba(10, 15, 32, 0.72);
      --panel-strong: rgba(12, 18, 40, 0.92);
      --line: rgba(148, 163, 184, 0.16);
      --line-strong: rgba(99, 102, 241, 0.3);
      --text: #edf2ff;
      --muted: #a6b3d1;
      --subtle: #7c89ad;
      --brand: #6d7cff;
      --brand-2: #34d3ff;
      --accent: #fb7185;
      --success: #2dd4bf;
      --shadow: 0 20px 60px rgba(0,0,0,.42);
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at top left, rgba(77,116,255,.22), transparent 35%),
        radial-gradient(circle at top right, rgba(52,211,255,.16), transparent 30%),
        radial-gradient(circle at 50% 0%, rgba(251,113,133,.12), transparent 28%),
        linear-gradient(180deg, #050713 0%, #080d1b 30%, #060816 100%);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      background-image: linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
      background-size: 32px 32px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.28), rgba(0,0,0,0));
      opacity: .42;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, textarea { font: inherit; }
    ::selection { background: rgba(109,124,255,.35); color: #fff; }
    .glass {
      background: linear-gradient(180deg, rgba(12,18,40,.74), rgba(10,15,32,.62));
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border: 1px solid rgba(255,255,255,.08);
      box-shadow: var(--shadow);
    }
    .container-wrap { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
    .brand-mark { display: inline-flex; align-items: center; gap: .75rem; font-weight: 800; letter-spacing: .02em; }
    .brand-badge {
      width: 2.25rem; height: 2.25rem; border-radius: 999px;
      display: grid; place-items: center; background: linear-gradient(135deg, var(--brand), var(--brand-2));
      color: white; box-shadow: 0 10px 30px rgba(77,116,255,.35);
    }
    .nav-link {
      position: relative;
      display: inline-flex; align-items: center; gap: .45rem;
      padding: .7rem 1rem; border-radius: 999px;
      color: #d8e2ff; transition: all .2s ease;
      border: 1px solid transparent;
    }
    .nav-link:hover, .nav-link:focus-visible {
      background: rgba(255,255,255,.06);
      border-color: rgba(255,255,255,.08);
      color: #fff; transform: translateY(-1px);
      outline: none;
    }
    .nav-link.active {
      background: linear-gradient(135deg, rgba(109,124,255,.22), rgba(52,211,255,.18));
      border-color: rgba(109,124,255,.4);
      color: #fff;
      box-shadow: 0 8px 30px rgba(77,116,255,.16);
    }
    .btn-primary, .btn-ghost {
      display: inline-flex; align-items: center; justify-content: center;
      gap: .55rem; border-radius: 999px; padding: .9rem 1.35rem;
      transition: all .22s ease; border: 1px solid transparent; font-weight: 700;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--brand), var(--brand-2));
      color: white; box-shadow: 0 14px 30px rgba(77,116,255,.25);
    }
    .btn-primary:hover, .btn-primary:focus-visible { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(77,116,255,.34); outline: none; }
    .btn-ghost {
      background: rgba(255,255,255,.04); color: #e8eeff; border-color: rgba(255,255,255,.09);
    }
    .btn-ghost:hover, .btn-ghost:focus-visible { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.15); transform: translateY(-2px); outline: none; }
    .section-title { font-size: clamp(1.5rem, 1.2rem + 1vw, 2.2rem); line-height: 1.15; letter-spacing: -.02em; }
    .section-kicker {
      display: inline-flex; align-items: center; gap: .5rem; padding: .35rem .8rem; border-radius: 999px;
      border: 1px solid rgba(109,124,255,.22); background: rgba(109,124,255,.1); color: #cfd9ff; font-size: .88rem;
    }
    .panel {
      background: linear-gradient(180deg, rgba(13,18,38,.82), rgba(7,11,24,.88));
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow);
    }
    .card {
      background: linear-gradient(180deg, rgba(17,24,48,.88), rgba(10,14,30,.94));
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }
    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(109,124,255,.34);
      box-shadow: 0 18px 40px rgba(0,0,0,.34);
    }
    .soft-line { border-color: rgba(255,255,255,.08); }
    .tag {
      display: inline-flex; align-items: center; gap: .35rem; border-radius: 999px;
      padding: .32rem .72rem; font-size: .82rem; color: #d7e2ff;
      background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
    }
    .metric {
      border-radius: 20px; padding: 1rem; background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
    }
    .faq-item {
      border-radius: 18px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03);
      padding: 1rem 1.1rem;
    }
    .footer-link { color: #b9c4e4; transition: color .2s ease, transform .2s ease; }
    .footer-link:hover, .footer-link:focus-visible { color: #fff; outline: none; transform: translateX(2px); }
    .footer-note { color: #8f9cc0; }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 1.5rem;
    }
    .hero-panel {
      background: linear-gradient(135deg, rgba(77,116,255,.12), rgba(52,211,255,.08) 42%, rgba(251,113,133,.08));
      border: 1px solid rgba(148,163,184,.16);
      border-radius: 30px;
      overflow: hidden;
      position: relative;
    }
    .hero-panel::after {
      content: "";
      position: absolute; inset: auto -10% -30% auto;
      width: 280px; height: 280px; border-radius: 999px;
      background: radial-gradient(circle, rgba(52,211,255,.22), transparent 70%);
      filter: blur(4px);
    }
    .search-box input {
      width: 100%;
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.08);
      color: #fff;
      border-radius: 999px;
      padding: .95rem 1.1rem;
      outline: none;
    }
    .search-box input::placeholder { color: #8b96b8; }
    .search-box input:focus {
      border-color: rgba(109,124,255,.45);
      box-shadow: 0 0 0 4px rgba(109,124,255,.14);
    }
    .scrollbar-hide::-webkit-scrollbar { display: none; }
    .scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }
    .feature-list li::before {
      content: "";
      width: .7rem; height: .7rem; border-radius: 999px; margin-top: .35rem; flex: none;
      background: linear-gradient(135deg, var(--brand), var(--brand-2)); box-shadow: 0 0 0 4px rgba(109,124,255,.12);
    }
    @media (max-width: 1024px) {
      .hero-grid { grid-template-columns: 1fr; }
    }
    @media (max-width: 768px) {
      .container-wrap { width: min(100% - 1.1rem, 1180px); }
      .nav-mobile { display: none; }
    }