/* roulang page: index */
:root{
      --bg0:#070b14;
      --bg1:#0c1220;
      --panel:#11182a;
      --panel2:#0d1424;
      --line:rgba(141, 164, 214, .18);
      --line-strong:rgba(141, 164, 214, .28);
      --text:#eef2ff;
      --muted:#9aa7c7;
      --cyan:#46e1ff;
      --cyan2:#2bb7ff;
      --violet:#a78bfa;
      --pink:#ff73d4;
      --green:#8ef57a;
      --shadow:0 20px 60px rgba(0,0,0,.45);
      --shadow-soft:0 12px 30px rgba(0,0,0,.28);
      --radius:22px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 15% 10%, rgba(70,225,255,.16), transparent 24%),
        radial-gradient(circle at 85% 15%, rgba(167,139,250,.17), transparent 26%),
        radial-gradient(circle at 50% 80%, rgba(255,115,212,.12), transparent 30%),
        linear-gradient(180deg, #050711 0%, #070b14 40%, #05070f 100%);
      font-family: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      min-height:100vh;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(transparent 0 96%, rgba(255,255,255,.03) 96% 100%),
        linear-gradient(90deg, transparent 0 96%, rgba(255,255,255,.02) 96% 100%);
      background-size:100% 18px, 18px 100%;
      opacity:.18;
      mix-blend-mode:screen;
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        radial-gradient(rgba(255,255,255,.08) .6px, transparent .6px);
      background-size:18px 18px;
      opacity:.08;
    }
    ::selection{background:rgba(70,225,255,.28);color:#fff}
    a{
      color:inherit;
      text-decoration:none;
      transition:transform .2s ease, opacity .2s ease, border-color .2s ease, background-color .2s ease, box-shadow .2s ease, color .2s ease;
    }
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    input,textarea{
      width:100%;
      border:1px solid rgba(141,164,214,.2);
      background:rgba(7,11,20,.72);
      color:var(--text);
      border-radius:16px;
      outline:none;
      transition:border-color .2s ease, box-shadow .2s ease, transform .2s ease, background-color .2s ease;
    }
    input::placeholder,textarea::placeholder{color:#7890b7}
    input:focus,textarea:focus{
      border-color:rgba(70,225,255,.6);
      box-shadow:0 0 0 4px rgba(70,225,255,.12);
      background:rgba(10,15,28,.92);
    }
    .container{
      width:min(1200px, calc(100% - 2rem));
      margin-inline:auto;
    }
    .panel{
      background:linear-gradient(180deg, rgba(17,24,42,.96), rgba(10,15,28,.96));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
      position:relative;
      overflow:hidden;
    }
    .panel::before{
      content:"";
      position:absolute;
      inset:0;
      border-radius:inherit;
      padding:1px;
      background:linear-gradient(135deg, rgba(70,225,255,.35), rgba(167,139,250,.18), rgba(142,245,122,.14));
      -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
      -webkit-mask-composite:xor;
      mask-composite:exclude;
      pointer-events:none;
    }
    .panel-soft{
      background:linear-gradient(180deg, rgba(15,21,37,.94), rgba(10,14,24,.94));
      border:1px solid rgba(141,164,214,.14);
      border-radius:20px;
      box-shadow:var(--shadow-soft);
    }
    .pixel-edge{
      box-shadow:
        0 0 0 1px rgba(255,255,255,.02) inset,
        0 0 0 1px rgba(70,225,255,.08),
        0 12px 40px rgba(0,0,0,.25);
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.72rem 1rem;
      border-radius:999px;
      border:1px solid rgba(141,164,214,.18);
      background:rgba(10,15,28,.76);
      color:#dce7ff;
      font-size:.94rem;
      line-height:1;
      white-space:nowrap;
      transition:all .2s ease;
    }
    .chip:hover{
      border-color:rgba(70,225,255,.42);
      background:rgba(19,27,46,.92);
      box-shadow:0 0 0 4px rgba(70,225,255,.07);
      transform:translateY(-1px);
    }
    .chip.active{
      background:linear-gradient(135deg, rgba(70,225,255,.18), rgba(167,139,250,.15));
      border-color:rgba(70,225,255,.55);
      color:#ffffff;
      box-shadow:0 0 0 4px rgba(70,225,255,.08);
    }
    .btn-primary,.btn-secondary{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      min-height:48px;
      padding:.9rem 1.2rem;
      border-radius:16px;
      font-weight:700;
      letter-spacing:.01em;
      border:1px solid transparent;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease, color .2s ease;
    }
    .btn-primary{
      color:#04111b;
      background:linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow:0 14px 36px rgba(70,225,255,.18);
    }
    .btn-primary:hover{
      transform:translateY(-1px);
      box-shadow:0 18px 40px rgba(70,225,255,.22);
    }
    .btn-secondary{
      color:#dce7ff;
      background:rgba(13,19,36,.84);
      border-color:rgba(141,164,214,.2);
    }
    .btn-secondary:hover{
      transform:translateY(-1px);
      border-color:rgba(70,225,255,.34);
      background:rgba(17,26,48,.96);
      box-shadow:0 12px 28px rgba(0,0,0,.18);
    }
    .section-title{
      font-size:clamp(1.5rem, 2.4vw, 2.2rem);
      line-height:1.15;
      font-weight:800;
      letter-spacing:-.02em;
    }
    .section-note{
      color:var(--muted);
      line-height:1.8;
      max-width:68ch;
    }
    .stat-ring{
      background:
        radial-gradient(circle at 30% 30%, rgba(70,225,255,.24), transparent 42%),
        linear-gradient(180deg, rgba(16,24,42,.95), rgba(10,15,29,.95));
      border:1px solid rgba(141,164,214,.18);
      border-radius:18px;
      box-shadow:var(--shadow-soft);
    }
    .glow-line{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(70,225,255,.6), rgba(167,139,250,.5), transparent);
    }
    details.faq{
      border-radius:20px;
      border:1px solid rgba(141,164,214,.16);
      background:linear-gradient(180deg, rgba(16,23,40,.9), rgba(10,14,25,.94));
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    details.faq[open]{
      border-color:rgba(70,225,255,.34);
      box-shadow:0 0 0 4px rgba(70,225,255,.06), var(--shadow-soft);
    }
    details.faq summary{
      list-style:none;
      cursor:pointer;
      padding:1rem 1.1rem;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
      font-weight:700;
      color:#f2f6ff;
    }
    details.faq summary::-webkit-details-marker{display:none}
    .faq-body{
      padding:0 1.1rem 1.1rem;
      color:var(--muted);
      line-height:1.85;
    }
    .toast{
      position:fixed;
      left:50%;
      bottom:1.2rem;
      transform:translateX(-50%) translateY(30px);
      opacity:0;
      pointer-events:none;
      background:rgba(12,18,31,.96);
      color:#ecf6ff;
      border:1px solid rgba(70,225,255,.32);
      box-shadow:var(--shadow);
      border-radius:999px;
      padding:.85rem 1.15rem;
      z-index:60;
      transition:all .25s ease;
      max-width:min(92vw, 560px);
      text-align:center;
    }
    .toast.show{
      transform:translateX(-50%) translateY(0);
      opacity:1;
    }
    .scrollbar-hide::-webkit-scrollbar{display:none}
    .scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}
    .kicker{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.45rem .75rem;
      border-radius:999px;
      border:1px solid rgba(70,225,255,.2);
      background:rgba(70,225,255,.06);
      color:#dff8ff;
      font-size:.88rem;
      line-height:1;
    }
    .bar{
      height:.62rem;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      overflow:hidden;
      border:1px solid rgba(141,164,214,.12);
    }
    .bar > span{
      display:block;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg, var(--cyan), var(--green));
      box-shadow:0 0 20px rgba(70,225,255,.22);
    }
    .hover-lift{
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background-color .2s ease;
    }
    .hover-lift:hover{
      transform:translateY(-2px);
      border-color:rgba(70,225,255,.28);
      box-shadow:0 16px 34px rgba(0,0,0,.25);
    }
    @media (max-width: 1024px){
      .container{width:min(1200px, calc(100% - 1.5rem));}
    }
    @media (max-width: 768px){
      .section-title{letter-spacing:-.01em}
      .chip{padding:.66rem .88rem}
    }
    @media (max-width: 520px){
      .btn-primary,.btn-secondary{width:100%}
      .mobile-stack{grid-template-columns:1fr !important}
    }

/* roulang page: category1 */
:root {
      --bg: #070b14;
      --bg-2: #0b1020;
      --panel: rgba(13, 19, 36, .86);
      --panel-2: rgba(18, 25, 47, .9);
      --text: #f8fafc;
      --muted: #94a3b8;
      --soft: #cbd5e1;
      --line: rgba(255,255,255,.10);
      --line-strong: rgba(103,232,249,.34);
      --cyan: #67e8f9;
      --green: #8ef77f;
      --pink: #ff4fd8;
      --violet: #a78bfa;
      --amber: #ffd166;
      --radius: 22px;
      --radius-sm: 14px;
      --shadow: 0 24px 80px rgba(0,0,0,.42);
      --glow: 0 0 0 1px rgba(103,232,249,.18), 0 18px 45px rgba(103,232,249,.08);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
      line-height: 1.65;
      background:
        radial-gradient(circle at 12% 6%, rgba(255,79,216,.18), transparent 28%),
        radial-gradient(circle at 82% 12%, rgba(103,232,249,.17), transparent 24%),
        radial-gradient(circle at 50% 85%, rgba(142,247,127,.11), transparent 32%),
        var(--bg);
      min-height: 100vh;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      opacity: .22;
      background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size: 18px 18px;
      mask-image: linear-gradient(to bottom, black, transparent 82%);
    }

    a { color: inherit; text-decoration: none; }
    button, input, textarea { font: inherit; }
    button { cursor: pointer; }
    input, textarea { outline: none; }
    ::selection { background: rgba(103,232,249,.28); color: white; }

    .container {
      width: min(1180px, calc(100% - 32px));
      margin-inline: auto;
    }

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

    .chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      white-space: nowrap;
      border: 1px solid rgba(255,255,255,.10);
      border-radius: 999px;
      background: rgba(255,255,255,.055);
      color: #dbeafe;
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 700;
      transition: transform .2s ease, border-color .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
    }

    .chip:hover {
      transform: translateY(-1px);
      border-color: rgba(103,232,249,.44);
      background: rgba(103,232,249,.10);
      color: #ffffff;
      box-shadow: 0 0 0 3px rgba(103,232,249,.06);
    }

    .chip.active {
      border-color: rgba(103,232,249,.72);
      color: #08111f;
      background: linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow: 0 12px 28px rgba(103,232,249,.18);
    }

    .btn-primary,
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      border-radius: 999px;
      padding: 12px 18px;
      font-weight: 900;
      line-height: 1;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
    }

    .btn-primary {
      color: #06111f;
      background: linear-gradient(135deg, var(--cyan), var(--green));
      border: 1px solid rgba(255,255,255,.16);
      box-shadow: 0 16px 32px rgba(103,232,249,.16), inset 0 -2px 0 rgba(0,0,0,.16);
    }

    .btn-secondary {
      color: #e2e8f0;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(103,232,249,.24);
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.03);
    }

    .btn-primary:hover,
    .btn-secondary:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 42px rgba(103,232,249,.20);
      border-color: rgba(103,232,249,.48);
    }

    .btn-primary:focus-visible,
    .btn-secondary:focus-visible,
    .chip:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    button:focus-visible {
      outline: 3px solid rgba(103,232,249,.35);
      outline-offset: 3px;
    }

    .section {
      padding: 74px 0;
      position: relative;
    }

    .section-tight { padding: 46px 0; }

    .kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      border: 1px solid rgba(255,255,255,.10);
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      color: var(--cyan);
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 900;
    }

    .kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      background: var(--green);
      box-shadow: 0 0 16px var(--green);
      border-radius: 2px;
    }

    .panel {
      position: relative;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.035)), var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .panel::after {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      border-radius: inherit;
      background:
        linear-gradient(90deg, rgba(103,232,249,.2), transparent 18%, transparent 82%, rgba(255,79,216,.18)),
        linear-gradient(180deg, rgba(255,255,255,.08), transparent 32%);
      opacity: .45;
      mask-image: linear-gradient(to bottom, black, transparent 75%);
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background: rgba(255,255,255,.055);
      box-shadow: 0 18px 42px rgba(0,0,0,.18);
      transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(103,232,249,.38);
      background: rgba(255,255,255,.075);
      box-shadow: var(--glow);
    }

    .pixel-cut {
      clip-path: polygon(0 12px, 12px 12px, 12px 0, calc(100% - 12px) 0, calc(100% - 12px) 12px, 100% 12px, 100% calc(100% - 12px), calc(100% - 12px) calc(100% - 12px), calc(100% - 12px) 100%, 12px 100%, 12px calc(100% - 12px), 0 calc(100% - 12px));
    }

    .status-dot {
      display: inline-block;
      width: 9px;
      height: 9px;
      border-radius: 3px;
      background: var(--green);
      box-shadow: 0 0 18px rgba(142,247,127,.8);
    }

    .metric-bar {
      height: 8px;
      overflow: hidden;
      border-radius: 99px;
      background: rgba(255,255,255,.08);
    }

    .metric-bar > span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--cyan), var(--pink));
      box-shadow: 0 0 20px rgba(103,232,249,.4);
    }

    .entry-art {
      min-height: 282px;
      background:
        linear-gradient(135deg, rgba(103,232,249,.22), transparent 34%),
        linear-gradient(315deg, rgba(255,79,216,.25), transparent 36%),
        #0d1428;
    }

    .entry-art-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 8px;
    }

    .pixel-block {
      min-height: 38px;
      border-radius: 8px;
      border: 1px solid rgba(255,255,255,.09);
      background: rgba(255,255,255,.06);
    }

    .pixel-block:nth-child(3n) { background: rgba(103,232,249,.22); }
    .pixel-block:nth-child(4n) { background: rgba(255,79,216,.20); }
    .pixel-block:nth-child(5n) { background: rgba(142,247,127,.20); }

    .filter-tab {
      border: 1px solid rgba(255,255,255,.1);
      border-radius: 14px;
      background: rgba(255,255,255,.055);
      color: #dbeafe;
      padding: 10px 13px;
      font-size: 14px;
      font-weight: 800;
      transition: .2s ease;
      white-space: nowrap;
    }

    .filter-tab:hover,
    .filter-tab.active {
      border-color: rgba(103,232,249,.55);
      color: #07111f;
      background: linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow: 0 12px 28px rgba(103,232,249,.14);
    }

    .list-card .cover {
      min-height: 110px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(135deg, rgba(103,232,249,.26), transparent 42%),
        linear-gradient(315deg, rgba(255,79,216,.20), transparent 45%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 10px, transparent 10px 20px),
        #0e172a;
    }

    .faq-item {
      border: 1px solid rgba(255,255,255,.10);
      border-radius: 18px;
      background: rgba(255,255,255,.045);
      overflow: hidden;
      transition: border-color .2s ease, background .2s ease;
    }

    .faq-item.open {
      border-color: rgba(103,232,249,.35);
      background: rgba(103,232,249,.06);
    }

    .faq-answer {
      display: none;
      color: var(--muted);
      padding: 0 18px 18px;
      font-size: 15px;
      line-height: 1.8;
    }

    .faq-item.open .faq-answer { display: block; }

    .field {
      width: 100%;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 16px;
      background: rgba(5, 9, 18, .72);
      color: white;
      padding: 13px 14px;
      transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .field::placeholder { color: #64748b; }
    .field:focus {
      border-color: rgba(103,232,249,.55);
      box-shadow: 0 0 0 4px rgba(103,232,249,.10);
      background: rgba(8, 13, 25, .92);
    }

    @media (max-width: 1024px) {
      .section { padding: 62px 0; }
      .entry-art { min-height: 240px; }
    }

    @media (max-width: 768px) {
      .container { width: min(100% - 24px, 1180px); }
      .section { padding: 52px 0; }
      header .container { width: min(100% - 18px, 1180px); }
      .btn-primary, .btn-secondary { width: 100%; }
      .chip { min-height: 36px; padding: 8px 12px; font-size: 13px; }
    }

    @media (max-width: 520px) {
      body { background-size: auto; }
      .section { padding: 44px 0; }
      .panel { border-radius: 18px; }
      .card { border-radius: 14px; }
      .entry-art-grid { grid-template-columns: repeat(4, 1fr); gap: 6px; }
      .pixel-block { min-height: 30px; }
    }