/* roulang page: index */
:root{
      --bg:#F7F4F2;
      --bg-2:#FAFAF8;
      --bg-3:#F1EEF3;
      --text:#201A23;
      --muted:#6F6572;
      --brand:#4B233F;
      --brand-2:#5A2D4E;
      --accent:#C45A74;
      --accent-2:#D89A6A;
      --line:rgba(75,35,63,.12);
      --line-2:rgba(75,35,63,.18);
      --card:rgba(255,255,255,.82);
      --shadow:0 20px 60px rgba(75,35,63,.08);
      --shadow-2:0 18px 45px rgba(75,35,63,.12);
      --radius:24px;
      --radius-2:18px;
      --radius-3:14px;
    }
    html{scroll-behavior:smooth}
    body{
      color:var(--text);
      background:
        radial-gradient(circle at 20% 10%, rgba(196,90,116,.12), transparent 30%),
        radial-gradient(circle at 85% 15%, rgba(216,154,106,.12), transparent 24%),
        linear-gradient(180deg, var(--bg) 0%, #f8f5f6 45%, var(--bg-3) 100%);
      font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(75,35,63,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(75,35,63,.05) 1px, transparent 1px);
      background-size:44px 44px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.4), transparent 85%);
      opacity:.45;
      z-index:-1;
    }
    ::selection{background:rgba(196,90,116,.2); color:var(--brand);}
    a,button,input,summary{transition:all .25s ease}
    a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
      outline:2px solid rgba(196,90,116,.45);
      outline-offset:2px;
    }
    .site-shell{max-width:1280px;margin:0 auto;padding-left:1rem;padding-right:1rem}
    .soft-card{
      background:var(--card);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
    }
    .soft-card:hover{box-shadow:var(--shadow-2); border-color:var(--line-2);}
    .section-title{
      letter-spacing:-.03em;
      line-height:1.08;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      border:1px solid var(--line);
      background:rgba(255,255,255,.72);
      color:var(--brand);
      border-radius:999px;
      padding:.45rem .8rem;
      font-size:.84rem;
      font-weight:600;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.86);
      color:var(--muted);
      padding:.42rem .72rem;
      font-size:.82rem;
      line-height:1;
    }
    .pill-active{
      background:linear-gradient(135deg, rgba(75,35,63,.95), rgba(196,90,116,.92));
      color:#fff;
      border-color:transparent;
      box-shadow:0 12px 25px rgba(75,35,63,.18);
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--brand), var(--accent));
      color:#fff;
      box-shadow:0 16px 32px rgba(75,35,63,.18);
    }
    .btn-primary:hover{filter:brightness(1.04); transform:translateY(-1px)}
    .btn-secondary{
      background:#fff;
      color:var(--brand);
      border:1px solid var(--line);
    }
    .btn-secondary:hover{background:#fbf7f8; border-color:rgba(75,35,63,.2); transform:translateY(-1px)}
    .btn-ghost{
      background:rgba(255,255,255,.55);
      color:var(--text);
      border:1px solid rgba(75,35,63,.10);
    }
    .btn-ghost:hover{background:rgba(255,255,255,.85)}
    .nav-glass{
      background:rgba(250,250,248,.82);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
    }
    .nav-link{
      color:var(--muted);
      border-radius:999px;
      padding:.55rem .95rem;
      font-weight:600;
    }
    .nav-link:hover{background:rgba(75,35,63,.06); color:var(--brand)}
    .nav-link[aria-current="page"]{
      background:rgba(196,90,116,.12);
      color:var(--brand);
    }
    .hero-grid{
      position:relative;
      overflow:hidden;
      border-radius:32px;
    }
    .hero-grid::after{
      content:"";
      position:absolute;
      inset:auto -8% -18% auto;
      width:420px;
      height:420px;
      background:radial-gradient(circle, rgba(196,90,116,.18), transparent 65%);
      pointer-events:none;
    }
    .hero-grid::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 80% 20%, rgba(216,154,106,.15), transparent 24%),
        radial-gradient(circle at 8% 18%, rgba(196,90,116,.16), transparent 22%);
      pointer-events:none;
    }
    .screen-frame{
      position:relative;
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(75,35,63,.08), rgba(196,90,116,.10)),
        rgba(255,255,255,.82);
      border:1px solid rgba(75,35,63,.12);
      box-shadow:0 22px 50px rgba(75,35,63,.10);
      overflow:hidden;
    }
    .screen-frame .glow{
      position:absolute;
      inset:-40px auto auto -40px;
      width:160px;
      height:160px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(196,90,116,.25), transparent 70%);
      filter:blur(2px);
    }
    .carousel-track{
      display:flex;
      transition:transform .55s cubic-bezier(.22,1,.36,1);
      will-change:transform;
    }
    .carousel-slide{
      min-width:100%;
    }
    .shot{
      border:1px solid rgba(75,35,63,.12);
      border-radius:24px;
      background:
        linear-gradient(145deg, rgba(75,35,63,.92), rgba(90,45,78,.86) 42%, rgba(216,154,106,.48));
      min-height:320px;
      overflow:hidden;
      position:relative;
    }
    .shot::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, transparent 0%, rgba(255,255,255,.07) 48%, transparent 100%),
        radial-gradient(circle at 20% 22%, rgba(255,255,255,.18), transparent 18%),
        radial-gradient(circle at 70% 26%, rgba(255,255,255,.12), transparent 16%),
        radial-gradient(circle at 48% 76%, rgba(255,255,255,.1), transparent 20%);
      mix-blend-mode:screen;
      opacity:.9;
    }
    .shot-card{
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      border-radius:18px;
      backdrop-filter:blur(14px);
      -webkit-backdrop-filter:blur(14px);
    }
    .meter{
      height:10px;
      border-radius:999px;
      background:rgba(255,255,255,.14);
      overflow:hidden;
    }
    .meter > span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg, rgba(255,255,255,.82), rgba(255,255,255,.48));
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:12px;
    }
    .req-card{
      border-radius:20px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.84);
      box-shadow:0 16px 32px rgba(75,35,63,.05);
    }
    .req-badge{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      border-radius:999px;
      padding:.38rem .68rem;
      font-size:.8rem;
      font-weight:600;
      color:var(--brand);
      background:rgba(196,90,116,.10);
    }
    .news-item{
      border-bottom:1px solid rgba(75,35,63,.08);
    }
    .news-item:last-child{border-bottom:none}
    .masonry{
      column-count:1;
      column-gap:1.25rem;
    }
    @media (min-width: 768px){
      .masonry{column-count:2;}
    }
    @media (min-width: 1200px){
      .masonry{column-count:3;}
    }
    .masonry-item{
      break-inside:avoid;
      margin:0 0 1.25rem 0;
    }
    details.faq-item{
      border:1px solid var(--line);
      background:rgba(255,255,255,.86);
      border-radius:20px;
      box-shadow:0 14px 32px rgba(75,35,63,.05);
      overflow:hidden;
    }
    details.faq-item[open]{
      border-color:rgba(196,90,116,.28);
      box-shadow:0 18px 40px rgba(75,35,63,.08);
    }
    details.faq-item summary{
      list-style:none;
      cursor:pointer;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    .footer-link{
      color:var(--muted);
    }
    .footer-link:hover{color:var(--brand)}
    .mini-grid{
      background-image:
        linear-gradient(rgba(75,35,63,.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(75,35,63,.08) 1px, transparent 1px);
      background-size:18px 18px;
    }
    .hidden-menu{max-height:0; overflow:hidden; opacity:0; transform:translateY(-8px); transition:.3s ease}
    .hidden-menu.open{max-height:460px; opacity:1; transform:translateY(0)}
    .shadow-soft{box-shadow:0 18px 36px rgba(75,35,63,.08)}
    .hover-rise:hover{transform:translateY(-2px)}
    .tab-btn.active{
      background:rgba(75,35,63,.92);
      color:#fff;
      border-color:transparent;
    }

/* roulang page: category1 */
:root{
      --bg:#F7F4F2;
      --bg-soft:#FAFAF8;
      --panel:rgba(255,255,255,.82);
      --panel-strong:#ffffff;
      --text:#201A23;
      --muted:#6F6572;
      --brand:#4B233F;
      --brand-2:#5A2D4E;
      --accent:#C45A74;
      --accent-2:#D89A6A;
      --line:rgba(75,35,63,.12);
      --shadow:0 20px 60px rgba(75,35,63,.08);
      --shadow-2:0 16px 36px rgba(75,35,63,.12);
      --radius-xl:28px;
      --radius-lg:20px;
      --radius-md:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
      background:
        radial-gradient(circle at top left, rgba(196,90,116,.08), transparent 34%),
        radial-gradient(circle at top right, rgba(216,154,106,.08), transparent 30%),
        linear-gradient(180deg, #FBF9F7 0%, var(--bg) 100%);
      min-height:100vh;
      line-height:1.75;
      letter-spacing:0;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(75,35,63,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(75,35,63,.035) 1px, transparent 1px);
      background-size:28px 28px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.22), transparent 75%);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    :focus-visible{outline:2px solid rgba(196,90,116,.45);outline-offset:2px}
    .site-shell{width:min(1240px, calc(100% - 32px)); margin:0 auto}
    .glass-panel{
      background:var(--panel);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .soft-panel{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.78));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.7rem 1rem;
      border-radius:999px;
      color:var(--muted);
      font-size:.95rem;
      font-weight:600;
      transition:all .18s ease;
    }
    .nav-link:hover{
      color:var(--brand);
      background:rgba(196,90,116,.08);
    }
    .nav-link[aria-current="page"]{
      color:var(--brand);
      background:rgba(196,90,116,.12);
      box-shadow:inset 0 0 0 1px rgba(196,90,116,.08);
    }
    .footer-link{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      color:var(--muted);
      transition:color .18s ease, transform .18s ease;
    }
    .footer-link:hover{color:var(--brand);transform:translateX(2px)}
    .chip{
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      padding:.42rem .8rem;
      border-radius:999px;
      font-size:.82rem;
      font-weight:700;
      color:var(--brand);
      background:rgba(75,35,63,.06);
      border:1px solid rgba(75,35,63,.08);
    }
    .chip-accent{
      color:#fff;
      background:linear-gradient(135deg, var(--brand), var(--accent));
      border-color:transparent;
      box-shadow:0 10px 24px rgba(75,35,63,.16);
    }
    .chip-soft{
      color:var(--muted);
      background:rgba(255,255,255,.66);
      border:1px solid var(--line);
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.4rem .75rem;
      border-radius:999px;
      background:rgba(75,35,63,.06);
      color:var(--brand);
      font-size:.82rem;
      font-weight:800;
      letter-spacing:0;
    }
    .section-title{
      font-size:clamp(1.7rem, 2.2vw, 2.6rem);
      line-height:1.12;
      font-weight:800;
      color:var(--brand);
      letter-spacing:0;
    }
    .section-copy{
      color:var(--muted);
      font-size:1rem;
      line-height:1.8;
    }
    .btn-primary{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      padding:.95rem 1.3rem;
      border-radius:999px;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg, var(--brand), var(--accent));
      box-shadow:0 14px 32px rgba(75,35,63,.18);
      transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
    }
    .btn-primary:hover{transform:translateY(-1px);filter:brightness(1.03);box-shadow:0 18px 38px rgba(75,35,63,.2)}
    .btn-secondary{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      padding:.95rem 1.3rem;
      border-radius:999px;
      color:var(--brand);
      font-weight:800;
      background:rgba(255,255,255,.85);
      border:1px solid rgba(75,35,63,.12);
      transition:transform .18s ease, background .18s ease, border-color .18s ease;
    }
    .btn-secondary:hover{
      transform:translateY(-1px);
      background:rgba(196,90,116,.06);
      border-color:rgba(196,90,116,.2);
    }
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.45rem;
      padding:.8rem 1rem;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.76);
      color:var(--muted);
      font-weight:700;
      transition:all .18s ease;
    }
    .btn-ghost:hover{color:var(--brand);border-color:rgba(75,35,63,.2);background:rgba(255,255,255,.94)}
    .input-shell{
      display:flex;
      align-items:center;
      gap:.65rem;
      padding:.72rem .95rem;
      border-radius:999px;
      background:rgba(255,255,255,.88);
      border:1px solid rgba(75,35,63,.12);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.8);
    }
    .input-shell input{
      width:100%;
      border:0;
      background:transparent;
      color:var(--text);
      outline:none;
      min-width:0;
    }
    .input-shell input::placeholder{color:#8A808C}
    .panel-card{
      background:var(--panel-strong);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      border-radius:var(--radius-xl);
    }
    .info-card{
      background:rgba(255,255,255,.8);
      border:1px solid rgba(75,35,63,.1);
      box-shadow:0 16px 32px rgba(75,35,63,.06);
      border-radius:var(--radius-lg);
      transition:transform .18s ease, border-color .18s ease, box-shadow .18s ease;
    }
    .info-card:hover{
      transform:translateY(-2px);
      border-color:rgba(196,90,116,.22);
      box-shadow:var(--shadow-2);
    }
    .mini-stat{
      display:grid;
      gap:.15rem;
      padding:1rem 1.1rem;
      border-radius:18px;
      background:rgba(75,35,63,.04);
      border:1px solid rgba(75,35,63,.08);
    }
    .mini-stat strong{
      font-size:1.1rem;
      color:var(--brand);
      font-weight:800;
    }
    .mini-stat span{font-size:.84rem;color:var(--muted)}
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.25fr) minmax(0,.95fr);
      gap:1.2rem;
    }
    .hero-title{
      font-size:clamp(2.3rem, 4vw, 4.25rem);
      line-height:1.08;
      font-weight:900;
      letter-spacing:0;
      color:var(--brand);
    }
    .hero-summary{
      font-size:1.05rem;
      line-height:1.85;
      color:var(--muted);
      max-width:45rem;
    }
    .hero-screen{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      background:
        linear-gradient(180deg, rgba(75,35,63,.96), rgba(90,45,78,.92)),
        radial-gradient(circle at top left, rgba(196,90,116,.25), transparent 34%);
      box-shadow:0 28px 70px rgba(75,35,63,.18);
      border:1px solid rgba(255,255,255,.08);
    }
    .hero-screen::before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
      background-size:30px 30px;
      opacity:.55;
      pointer-events:none;
    }
    .hero-ribbon{
      position:absolute;
      inset:auto 22px 22px 22px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:.85rem;
    }
    .carousel-track{
      position:relative;
      min-height:420px;
      overflow:hidden;
    }
    .carousel-slide{
      position:absolute;
      inset:0;
      opacity:0;
      transform:translateX(18px) scale(.98);
      transition:opacity .28s ease, transform .28s ease;
      pointer-events:none;
    }
    .carousel-slide.is-active{
      opacity:1;
      transform:none;
      pointer-events:auto;
      z-index:1;
    }
    .preview-shell{
      border-radius:28px;
      background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(248,242,244,.95));
      border:1px solid rgba(255,255,255,.3);
      box-shadow:0 18px 40px rgba(75,35,63,.15);
      overflow:hidden;
    }
    .preview-topbar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:.95rem 1.1rem;
      background:rgba(75,35,63,.05);
      border-bottom:1px solid rgba(75,35,63,.08);
    }
    .dot-row{display:flex;gap:.35rem}
    .dot-row span{
      width:.72rem;height:.72rem;border-radius:999px;background:rgba(75,35,63,.15)
    }
    .dot-row span:nth-child(1){background:rgba(196,90,116,.45)}
    .dot-row span:nth-child(2){background:rgba(216,154,106,.45)}
    .dot-row span:nth-child(3){background:rgba(75,35,63,.2)}
    .preview-body{
      padding:1rem;
      display:grid;
      gap:.85rem;
    }
    .screenshot-block{
      border-radius:22px;
      border:1px solid rgba(75,35,63,.1);
      background:
        linear-gradient(135deg, rgba(75,35,63,.08), rgba(196,90,116,.06)),
        linear-gradient(180deg, #fff, #faf7f9);
      min-height:150px;
      overflow:hidden;
      position:relative;
    }
    .screenshot-block::after{
      content:"";
      position:absolute;
      inset:16px;
      border-radius:18px;
      border:1px dashed rgba(75,35,63,.18);
      pointer-events:none;
    }
    .screen-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:.8rem;
    }
    .screen-chip{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.36rem .65rem;
      border-radius:999px;
      font-size:.8rem;
      font-weight:700;
      color:var(--brand);
      background:rgba(255,255,255,.72);
      border:1px solid rgba(75,35,63,.1);
    }
    .filter-row{
      display:flex;
      flex-wrap:wrap;
      gap:.7rem;
    }
    .filter-chip{
      display:inline-flex;
      align-items:center;
      gap:.4rem;
      padding:.66rem .95rem;
      border-radius:999px;
      border:1px solid rgba(75,35,63,.12);
      background:rgba(255,255,255,.82);
      color:var(--muted);
      font-weight:700;
      transition:all .18s ease;
    }
    .filter-chip:hover,.filter-chip.is-active{
      color:var(--brand);
      border-color:rgba(196,90,116,.25);
      background:rgba(196,90,116,.08);
      transform:translateY(-1px);
    }
    .review-wall{
      columns:1;
      column-gap:1rem;
    }
    .review-card{
      break-inside:avoid;
      margin:0 0 1rem;
      padding:1.05rem 1.05rem 1rem;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(75,35,63,.1);
      border-radius:22px;
      box-shadow:0 14px 28px rgba(75,35,63,.05);
    }
    .star{
      width:14px;height:14px;display:inline-block;
      background:linear-gradient(135deg, #D89A6A, #C45A74);
      clip-path:polygon(50% 0%, 61% 36%, 100% 38%, 69% 59%, 79% 100%, 50% 77%, 21% 100%, 31% 59%, 0 38%, 39% 36%);
      margin-right:2px;
    }
    .faq-item{
      border-radius:20px;
      border:1px solid rgba(75,35,63,.1);
      background:rgba(255,255,255,.84);
      overflow:hidden;
    }
    .faq-btn{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      padding:1.05rem 1.1rem;
      color:var(--brand);
      background:transparent;
      border:0;
      font-weight:800;
      text-align:left;
      cursor:pointer;
    }
    .faq-answer{
      padding:0 1.1rem 1.05rem;
      color:var(--muted);
      font-size:.97rem;
      line-height:1.8;
    }
    .faq-answer[hidden]{display:none}
    .footer-shell{
      width:min(1240px, calc(100% - 32px));
      margin:0 auto;
    }
    .mobile-panel{
      display:none;
    }
    @media (min-width: 1024px){
      .review-wall{columns:3}
    }
    @media (min-width: 768px) and (max-width: 1023px){
      .hero-grid{grid-template-columns:1fr}
      .review-wall{columns:2}
      .carousel-track{min-height:380px}
    }
    @media (max-width: 1023px){
      .hero-grid{grid-template-columns:1fr}
      .hero-ribbon{grid-template-columns:1fr}
      .mobile-panel.is-open{display:block}
    }
    @media (max-width: 767px){
      .site-shell,.footer-shell{width:min(100% - 20px, 1240px)}
      .hero-title{font-size:clamp(2rem, 10vw, 3rem)}
      .section-title{font-size:clamp(1.55rem, 7vw, 2.2rem)}
      .carousel-track{min-height:360px}
      .screen-grid{grid-template-columns:1fr}
      .mobile-hide{display:none}
      .review-wall{columns:1}
    }