/* roulang page: index */
:root{
      --bg-0:#04120c;
      --bg-1:#071b12;
      --bg-2:#0a2e1c;
      --panel:#0f2c1f;
      --panel-2:#123927;
      --line:rgba(255,215,0,.18);
      --line-soft:rgba(255,255,255,.08);
      --text:#f5f7f1;
      --muted:#d1e1d6;
      --muted-2:#9db2a4;
      --gold:#ffd700;
      --gold-2:#f0e68c;
      --jade:#23b36b;
      --jade-2:#0f7c49;
      --danger:#d84c4c;
      --shadow:0 22px 54px rgba(0,0,0,.34);
      --radius:8px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"Be Vietnam Pro",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      color:var(--text);
      background:
        linear-gradient(180deg, rgba(10,46,28,.98) 0%, rgba(7,27,18,.99) 46%, rgba(4,18,12,1) 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        repeating-linear-gradient(90deg, rgba(255,255,255,.025) 0 1px, transparent 1px 92px),
        repeating-linear-gradient(180deg, rgba(255,255,255,.018) 0 1px, transparent 1px 92px),
        linear-gradient(135deg, rgba(255,215,0,.06), transparent 30%, transparent 70%, rgba(255,215,0,.045));
      opacity:.38;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.55) 55%, rgba(0,0,0,.85));
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:linear-gradient(180deg, rgba(255,215,0,.06), transparent 16%, transparent 84%, rgba(0,0,0,.14));
      mix-blend-mode:soft-light;
    }
    img{display:block; max-width:100%; height:auto}
    a{color:inherit; text-decoration:none}
    button,input,select,textarea{font:inherit}
    ::selection{background:rgba(255,215,0,.35); color:#fff}
    .site-container{width:min(100% - 1.5rem, 76rem); margin-inline:auto}
    @media (min-width:640px){.site-container{width:min(100% - 2.5rem, 76rem)}}
    @media (min-width:1280px){.site-container{width:min(100% - 4rem, 80rem)}}
    .section-pad{padding:4.5rem 0}
    @media (max-width:767px){.section-pad{padding:3.75rem 0}}
    .panel{
      background:linear-gradient(180deg, rgba(15,44,31,.92), rgba(9,29,20,.96));
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .panel-soft{
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
    }
    .card{
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
      transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
    }
    .card:hover{
      transform:translateY(-2px);
      border-color:rgba(255,215,0,.38);
      background:rgba(255,255,255,.06);
      box-shadow:0 18px 40px rgba(0,0,0,.24);
    }
    .nav-link{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.03);
      color:#edf6ef;
      padding:.72rem 1rem;
      border-radius:999px;
      font-size:.92rem;
      line-height:1;
      white-space:nowrap;
      transition:transform .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
    }
    .nav-link:hover{
      transform:translateY(-1px);
      border-color:rgba(255,215,0,.38);
      color:#fff;
      background:rgba(255,215,0,.08);
    }
    .nav-link[aria-current="page"]{
      color:#1e2d11;
      background:linear-gradient(135deg, var(--gold), #fff2a6);
      border-color:transparent;
      box-shadow:0 10px 24px rgba(255,215,0,.18);
    }
    .btn-primary,
    .btn-secondary,
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:.55rem;
      border-radius:999px;
      padding:.84rem 1.2rem;
      font-size:.93rem;
      font-weight:700;
      line-height:1;
      transition:transform .2s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease,opacity .2s ease;
      will-change:transform;
    }
    .btn-primary{
      color:#1e2d11;
      background:linear-gradient(135deg, var(--gold), #fff1a2);
      box-shadow:0 14px 30px rgba(255,215,0,.18);
    }
    .btn-primary:hover{transform:translateY(-1px); box-shadow:0 16px 32px rgba(255,215,0,.24)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.12);
    }
    .btn-secondary:hover{
      transform:translateY(-1px);
      border-color:rgba(255,215,0,.36);
      background:rgba(255,215,0,.07);
    }
    .btn-ghost{
      color:#edf6ef;
      background:transparent;
      border:1px solid rgba(255,255,255,.12);
    }
    .btn-ghost:hover{
      transform:translateY(-1px);
      border-color:rgba(255,215,0,.28);
      background:rgba(255,255,255,.04);
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.04);
      color:var(--muted);
      border-radius:999px;
      padding:.45rem .75rem;
      font-size:.75rem;
      font-weight:600;
      letter-spacing:.01em;
      line-height:1;
    }
    .chip-gold{
      background:rgba(255,215,0,.11);
      border-color:rgba(255,215,0,.24);
      color:#fff6c9;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      color:#fff0ae;
      font-size:.74rem;
      font-weight:700;
      letter-spacing:.18em;
      text-transform:uppercase;
    }
    .section-title{
      font-family:"Cormorant Garamond",serif;
      font-size:clamp(2rem,3vw,3.25rem);
      line-height:1.02;
      letter-spacing:0;
      color:#fffdfa;
      margin:0;
    }
    .section-lead{
      max-width:68ch;
      color:var(--muted);
      line-height:1.68;
      font-size:1rem;
      margin:1rem 0 0;
    }
    .hero-title{
      font-family:"Cormorant Garamond",serif;
      font-size:clamp(2.55rem,4.5vw,4.9rem);
      line-height:.94;
      letter-spacing:0;
      margin:0;
      color:#fffdfa;
      text-wrap:balance;
    }
    .hero-copy{
      color:#d8e6dc;
      line-height:1.7;
      font-size:1.03rem;
      max-width:62ch;
    }
    .stat{
      display:flex;
      align-items:center;
      gap:.8rem;
      padding:.9rem 1rem;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
    }
    .stat strong{display:block; font-size:1.05rem; color:#fff}
    .stat span{display:block; font-size:.82rem; color:var(--muted-2); line-height:1.35}
    .marker{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      padding:.35rem .7rem;
      border-radius:999px;
      border:1px solid rgba(255,215,0,.25);
      background:rgba(255,215,0,.1);
      color:#fff4b2;
      font-size:.74rem;
      font-weight:700;
      letter-spacing:.03em;
    }
    .metric{
      display:flex;
      flex-direction:column;
      gap:.15rem;
      padding:.9rem;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
      min-height:100%;
    }
    .metric strong{
      color:#fff;
      font-size:1.15rem;
      line-height:1.1;
    }
    .metric span{
      color:var(--muted-2);
      font-size:.84rem;
      line-height:1.4;
    }
    .line-clamp-2,
    .line-clamp-3{
      display:-webkit-box;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .line-clamp-2{-webkit-line-clamp:2}
    .line-clamp-3{-webkit-line-clamp:3}
    details.faq{
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      border-radius:var(--radius);
      padding:1rem 1.1rem;
      transition:border-color .2s ease,background .2s ease;
    }
    details.faq[open]{
      border-color:rgba(255,215,0,.28);
      background:rgba(255,255,255,.06);
    }
    details.faq summary{
      list-style:none;
      cursor:pointer;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:1rem;
      font-size:1rem;
      font-weight:700;
      color:#fff;
    }
    details.faq summary::-webkit-details-marker{display:none}
    details.faq .faq-body{
      margin-top:.8rem;
      color:var(--muted);
      line-height:1.68;
      font-size:.95rem;
    }
    .field{
      width:100%;
      appearance:none;
      border:1px solid rgba(255,255,255,.11);
      background:rgba(255,255,255,.05);
      color:#fff;
      border-radius:var(--radius);
      padding:.92rem 1rem;
      outline:none;
      transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
    }
    .field::placeholder{color:#a8b7af}
    .field:focus{
      border-color:rgba(255,215,0,.42);
      box-shadow:0 0 0 3px rgba(255,215,0,.12);
      background:rgba(255,255,255,.07);
    }
    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,215,0,.22), transparent);
    }
    .news-item{
      display:block;
      padding:1rem 0;
      border-bottom:1px solid rgba(255,255,255,.08);
      transition:transform .2s ease, color .2s ease;
    }
    .news-item:hover{
      transform:translateX(3px);
    }
    .news-item:last-child{border-bottom:none}
    .fixed-fab{
      position:fixed;
      left:1rem;
      bottom:6rem;
      z-index:50;
      width:3.75rem;
      height:3.75rem;
      border-radius:999px;
      border:1px solid rgba(255,215,0,.9);
      background:linear-gradient(180deg, #173c27, #0d2418);
      box-shadow:0 10px 28px rgba(0,0,0,.34), 0 0 0 1px rgba(255,215,0,.08), 0 0 22px rgba(255,215,0,.18);
      opacity:.72;
      transition:transform .2s ease, opacity .2s ease, box-shadow .2s ease;
    }
    .fixed-fab:hover{
      opacity:1;
      transform:translateY(-2px) scale(1.06);
      box-shadow:0 12px 30px rgba(0,0,0,.38), 0 0 28px rgba(255,215,0,.25);
    }
    .fixed-fab:active{transform:translateY(1px) scale(.97)}
    .fixed-fab .badge-dot{
      position:absolute;
      top:.35rem;
      right:.35rem;
      width:.6rem;
      height:.6rem;
      border-radius:999px;
      background:#d84c4c;
      box-shadow:0 0 0 3px rgba(216,76,76,.18);
      animation:pulse 1.8s infinite;
    }
    .floating-bar{
      position:fixed;
      left:1rem;
      right:1rem;
      bottom:1rem;
      z-index:40;
      border-radius:var(--radius);
      border:1px solid rgba(255,215,0,.2);
      background:rgba(8,31,20,.95);
      box-shadow:0 18px 40px rgba(0,0,0,.32);
      backdrop-filter:blur(18px);
    }
    .brand-mark{
      width:2.7rem;
      height:2.7rem;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      background:linear-gradient(135deg, rgba(255,215,0,.2), rgba(255,255,255,.05));
      border:1px solid rgba(255,215,0,.28);
      color:#fff1a2;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    }
    .brand-copy{
      display:flex;
      flex-direction:column;
      gap:.1rem;
    }
    .brand-copy strong{
      display:block;
      font-size:1rem;
      color:#fffdfa;
      line-height:1.2;
    }
    .brand-copy span{
      display:block;
      color:var(--muted-2);
      font-size:.79rem;
      line-height:1.2;
    }
    @media (max-width:767px){
      .hero-title{font-size:clamp(2.2rem,10vw,3.2rem)}
      .fixed-fab{bottom:7.5rem}
      .floating-bar{left:.75rem; right:.75rem; bottom:.75rem}
    }

/* roulang page: category1 */
:root {
      --bg: #f6fbf7;
      --surface: #ffffff;
      --surface-2: #edf7ef;
      --ink: #102017;
      --muted: #5d7164;
      --deep: #071b12;
      --deep-2: #0a2e1c;
      --jade: #128044;
      --jade-2: #16a34a;
      --gold: #ffd86b;
      --gold-2: #fff0ae;
      --red: #d32f2f;
      --line: rgba(16, 32, 23, .12);
      --line-dark: rgba(255, 255, 255, .12);
      --radius: 20px;
      --radius-sm: 12px;
      --shadow: 0 22px 70px rgba(7, 27, 18, .12);
      --shadow-soft: 0 12px 34px rgba(7, 27, 18, .10);
      --focus: 0 0 0 4px rgba(22, 163, 74, .22);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 12% 12%, rgba(255, 216, 107, .14), transparent 28rem),
        linear-gradient(180deg, #f9fff9 0%, var(--bg) 48%, #ffffff 100%);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

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

    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    :focus-visible {
      outline: none;
      box-shadow: var(--focus);
    }

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

    .brand-mark {
      display: inline-grid;
      width: 42px;
      height: 42px;
      place-items: center;
      border-radius: 14px;
      color: #082011;
      background: linear-gradient(135deg, var(--gold), #fff8d2 48%, #c7992b);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7), 0 10px 26px rgba(255, 216, 107, .22);
      flex: 0 0 auto;
    }

    .brand-copy {
      display: grid;
      line-height: 1.12;
    }

    .brand-copy strong {
      color: #fff9d9;
      font-weight: 900;
      letter-spacing: 0;
      font-size: 15px;
    }

    .brand-copy span {
      color: #c9d8cf;
      font-size: 12px;
      margin-top: 3px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 40px;
      border-radius: 999px;
      padding: 9px 13px;
      color: #d7e6db;
      border: 1px solid transparent;
      background: transparent;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: transform .22s ease, color .22s ease, background .22s ease, border-color .22s ease;
    }

    .nav-link:hover {
      color: #ffffff;
      background: rgba(255, 255, 255, .08);
      border-color: rgba(255, 255, 255, .12);
      transform: translateY(-1px);
    }

    .nav-link.active,
    .nav-link[aria-current="page"] {
      color: #082011;
      background: linear-gradient(135deg, var(--gold), #fff3b7);
      border-color: rgba(255, 255, 255, .42);
      box-shadow: 0 10px 24px rgba(255, 216, 107, .18);
    }

    .btn-primary,
    .btn-ghost,
    .btn-dark,
    .btn-white {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      border-radius: 999px;
      min-height: 42px;
      font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      color: #082011;
      background: linear-gradient(135deg, var(--gold), #fff2a8 52%, #e9b93f);
      box-shadow: 0 14px 28px rgba(255, 216, 107, .22);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(255, 216, 107, .3);
    }

    .btn-primary:active,
    .btn-dark:active,
    .btn-white:active,
    .btn-ghost:active {
      transform: translateY(1px) scale(.99);
    }

    .btn-ghost {
      color: #fff7cf;
      border-color: rgba(255, 255, 255, .18);
      background: rgba(255, 255, 255, .06);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, .12);
      color: #ffffff;
    }

    .btn-dark {
      color: #ffffff;
      background: linear-gradient(135deg, var(--deep), #0e3b24);
      box-shadow: 0 16px 34px rgba(7, 27, 18, .18);
    }

    .btn-dark:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 46px rgba(7, 27, 18, .24);
    }

    .btn-white {
      color: var(--deep);
      background: #ffffff;
      border-color: rgba(7, 27, 18, .12);
      box-shadow: 0 10px 26px rgba(7, 27, 18, .08);
    }

    .btn-white:hover {
      transform: translateY(-2px);
      border-color: rgba(18, 128, 68, .3);
      box-shadow: 0 16px 34px rgba(7, 27, 18, .12);
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 30px;
      border-radius: 999px;
      padding: 6px 11px;
      color: #d7e6db;
      background: rgba(255, 255, 255, .07);
      border: 1px solid rgba(255, 255, 255, .12);
      font-weight: 800;
      font-size: 12px;
    }

    .chip-gold {
      color: #082011;
      background: linear-gradient(135deg, var(--gold), #fff5be);
      border-color: rgba(255, 216, 107, .55);
    }

    .tag-success {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 7px 12px;
      color: #0f6a34;
      background: #e8f8ec;
      border: 1px solid rgba(22, 163, 74, .18);
      font-size: 13px;
      font-weight: 850;
    }

    .panel-soft {
      border-radius: 16px;
      border: 1px solid rgba(255, 255, 255, .1);
      background: rgba(255, 255, 255, .055);
      backdrop-filter: blur(10px);
    }

    .hero-wrap {
      position: relative;
      padding-top: 132px;
      padding-bottom: 52px;
      background:
        linear-gradient(180deg, rgba(246, 251, 247, .02), var(--bg)),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    }

    .hero-wrap::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(7, 27, 18, .9), rgba(7, 27, 18, .76) 44%, rgba(246, 251, 247, .72)),
        radial-gradient(circle at 70% 30%, rgba(255, 216, 107, .18), transparent 26rem);
      pointer-events: none;
    }

    .hero-panel {
      position: relative;
      border-radius: 28px;
      overflow: hidden;
      background: linear-gradient(135deg, rgba(7, 27, 18, .96), rgba(13, 64, 36, .93));
      border: 1px solid rgba(255, 255, 255, .13);
      box-shadow: 0 28px 90px rgba(7, 27, 18, .38);
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      inset: auto -12% -42% 54%;
      height: 260px;
      background: radial-gradient(circle, rgba(255, 216, 107, .24), transparent 70%);
      pointer-events: none;
    }

    .hero-copy h1 {
      color: #ffffff;
      font-size: clamp(34px, 4.9vw, 64px);
      line-height: 1.04;
      font-weight: 950;
      letter-spacing: 0;
    }

    .hero-copy p {
      color: #d6eadb;
      font-size: 17px;
      line-height: 1.68;
    }

    .rank-board {
      border-radius: 24px;
      background: rgba(255, 255, 255, .94);
      border: 1px solid rgba(255, 255, 255, .6);
      box-shadow: 0 22px 60px rgba(0, 0, 0, .22);
      color: var(--ink);
      overflow: hidden;
    }

    .rank-row {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap: 12px;
      align-items: center;
      padding: 14px 16px;
      border-top: 1px solid rgba(16, 32, 23, .08);
    }

    .rank-num {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      background: #eef9f0;
      color: #128044;
      font-weight: 950;
    }

    .metric-card,
    .feature-card,
    .scenario-card,
    .cert-card,
    .faq-item {
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .metric-card:hover,
    .feature-card:hover,
    .scenario-card:hover,
    .cert-card:hover,
    .faq-item:hover {
      transform: translateY(-3px);
      border-color: rgba(18, 128, 68, .24);
      box-shadow: var(--shadow);
    }

    .section {
      padding: 76px 0;
    }

    .section-tight {
      padding: 54px 0;
    }

    .section-kicker {
      color: var(--jade);
      font-size: 13px;
      font-weight: 950;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .section-title {
      margin-top: 10px;
      color: var(--ink);
      font-size: clamp(28px, 3vw, 44px);
      line-height: 1.14;
      font-weight: 950;
      letter-spacing: 0;
    }

    .section-lead {
      margin-top: 14px;
      color: var(--muted);
      font-size: 16px;
      line-height: 1.68;
    }

    .screenshot-stage {
      border-radius: 28px;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(237, 247, 239, .92)),
        url('/assets/images/coverpic/cover-1.jpg') center/cover no-repeat;
      border: 1px solid rgba(18, 128, 68, .16);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .browser-bar {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 14px 16px;
      border-bottom: 1px solid rgba(16, 32, 23, .1);
      background: rgba(255, 255, 255, .72);
      backdrop-filter: blur(10px);
    }

    .browser-dot {
      width: 10px;
      height: 10px;
      border-radius: 999px;
      background: #16a34a;
    }

    .browser-dot:nth-child(2) {
      background: #ffd86b;
    }

    .browser-dot:nth-child(3) {
      background: #ef4444;
    }

    .checkline {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(16, 32, 23, .08);
    }

    .checkline:last-child {
      border-bottom: 0;
    }

    .check-icon {
      width: 28px;
      height: 28px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      border-radius: 999px;
      color: #ffffff;
      background: var(--jade-2);
      box-shadow: 0 8px 20px rgba(22, 163, 74, .22);
    }

    .scenario-card {
      border-radius: 20px;
      overflow: hidden;
    }

    .scenario-card img {
      width: 100%;
      height: 190px;
      object-fit: cover;
    }

    .cert-card {
      border-radius: 18px;
      padding: 20px;
      min-height: 150px;
    }

    .step-item {
      position: relative;
      display: grid;
      grid-template-columns: 48px minmax(0, 1fr);
      gap: 18px;
      padding: 24px 0;
      border-bottom: 1px solid var(--line);
    }

    .step-item:last-child {
      border-bottom: 0;
    }

    .step-number {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #082011;
      background: linear-gradient(135deg, var(--gold), #fff5bf);
      font-weight: 950;
      box-shadow: 0 12px 28px rgba(255, 216, 107, .22);
    }

    .form-shell {
      border-radius: 28px;
      background: #ffffff;
      border: 1px solid rgba(18, 128, 68, .14);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .field {
      display: grid;
      gap: 8px;
    }

    .field label {
      color: var(--ink);
      font-size: 13px;
      font-weight: 850;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid rgba(16, 32, 23, .14);
      border-radius: 14px;
      background: #fbfffc;
      padding: 13px 14px;
      color: var(--ink);
      transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
    }

    .field textarea {
      min-height: 118px;
      resize: vertical;
    }

    .field input:hover,
    .field select:hover,
    .field textarea:hover {
      border-color: rgba(18, 128, 68, .32);
      background: #ffffff;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      outline: none;
      border-color: rgba(22, 163, 74, .72);
      box-shadow: var(--focus);
      background: #ffffff;
    }

    .faq-item {
      border-radius: 18px;
      padding: 22px;
    }

    .faq-item h3 {
      color: var(--ink);
      font-weight: 950;
      line-height: 1.35;
      font-size: 18px;
    }

    .faq-item p {
      margin-top: 10px;
      color: var(--muted);
      line-height: 1.68;
    }

    .cta-band {
      position: relative;
      overflow: hidden;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(7, 27, 18, .94), rgba(17, 90, 49, .9)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      border: 1px solid rgba(255, 255, 255, .12);
      box-shadow: 0 26px 76px rgba(7, 27, 18, .24);
    }

    .cta-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 80% 20%, rgba(255, 216, 107, .22), transparent 34rem);
      pointer-events: none;
    }

    .fab-support {
      position: fixed;
      left: 1rem;
      bottom: 6rem;
      z-index: 50;
      width: 62px;
      height: 62px;
      min-width: 48px;
      min-height: 48px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      color: #fff4b8;
      background:
        linear-gradient(145deg, rgba(8, 32, 17, .96), rgba(13, 70, 38, .92)),
        repeating-conic-gradient(from 0deg, rgba(255, 216, 107, .35) 0 10deg, transparent 10deg 20deg);
      border: 3px solid var(--gold);
      box-shadow: 0 4px 20px rgba(255, 215, 0, .3), inset 0 1px 0 rgba(255, 255, 255, .18);
      opacity: .7;
      transition: transform .22s ease, opacity .22s ease, box-shadow .22s ease;
      animation: coinFloat 3.4s ease-in-out infinite;
    }

    .fab-support::before {
      content: "";
      position: absolute;
      inset: -3px;
      border-radius: inherit;
      background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, .35) 45%, transparent 70%);
      transform: translateX(-120%);
      animation: shimmer 3.8s ease-in-out infinite;
      pointer-events: none;
    }

    .fab-support::after {
      content: "";
      position: absolute;
      top: 5px;
      right: 5px;
      width: 12px;
      height: 12px;
      border-radius: 999px;
      background: var(--red);
      box-shadow: 0 0 0 4px rgba(211, 47, 47, .18);
      animation: rubyBlink 1.2s ease-in-out infinite;
    }

    .fab-support:hover {
      opacity: 1;
      transform: scale(1.1);
      box-shadow: 0 8px 30px rgba(255, 215, 0, .42), inset 0 1px 0 rgba(255, 255, 255, .22);
    }

    .fab-support:hover svg {
      animation: iconSpin .58s ease;
    }

    .fab-support:active {
      transform: scale(.95) translateY(2px);
    }

    @keyframes coinFloat {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    @keyframes shimmer {
      0%, 60% { transform: translateX(-120%); }
      100% { transform: translateX(120%); }
    }

    @keyframes rubyBlink {
      0%, 100% { opacity: .55; transform: scale(.9); }
      50% { opacity: 1; transform: scale(1.08); }
    }

    @keyframes iconSpin {
      from { transform: rotate(0deg); }
      to { transform: rotate(360deg); }
    }

    @media (max-width: 1024px) {
      .hero-wrap {
        padding-top: 154px;
      }

      .section {
        padding: 62px 0;
      }

      .scenario-card img {
        height: 170px;
      }
    }

    @media (max-width: 768px) {
      .site-container {
        width: min(100% - 24px, 720px);
      }

      .brand-copy strong {
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
      }

      .nav-link {
        font-size: 13px;
        padding: 8px 11px;
      }

      .hero-wrap {
        padding-top: 182px;
        padding-bottom: 34px;
      }

      .hero-panel {
        border-radius: 22px;
      }

      .hero-copy h1 {
        font-size: 34px;
      }

      .rank-row {
        padding: 12px;
      }

      .section {
        padding: 52px 0;
      }

      .section-title {
        font-size: 30px;
      }

      .step-item {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 14px;
      }

      .step-number {
        width: 42px;
        height: 42px;
        border-radius: 14px;
      }

      .fab-support {
        width: 56px;
        height: 56px;
        bottom: 5.5rem;
      }
    }

    @media (max-width: 520px) {
      .brand-copy strong {
        max-width: 160px;
        font-size: 14px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }

      .hero-wrap {
        padding-top: 196px;
      }

      .hero-copy h1 {
        font-size: 30px;
        line-height: 1.1;
      }

      .hero-copy p,
      .section-lead {
        font-size: 15px;
      }

      .btn-primary,
      .btn-ghost,
      .btn-dark,
      .btn-white {
        width: 100%;
        white-space: normal;
        text-align: center;
      }

      .scenario-card img {
        height: 155px;
      }

      .cta-band,
      .form-shell,
      .screenshot-stage {
        border-radius: 22px;
      }
    }

/* roulang page: category2 */
:root {
      --bg: #f6fbf7;
      --bg-strong: #eaf7ee;
      --ink: #102117;
      --muted: #5f7267;
      --jade: #0a2e1c;
      --jade-2: #123e25;
      --green: #15a05f;
      --green-soft: #dcf8e9;
      --gold: #ffd700;
      --gold-2: #fff0ae;
      --red: #d32f2f;
      --line: rgba(10, 46, 28, .14);
      --white: #ffffff;
      --shadow: 0 24px 70px rgba(8, 35, 21, .13);
      --shadow-soft: 0 14px 40px rgba(8, 35, 21, .09);
      --radius: 8px;
      --radius-lg: 18px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--ink);
      background: linear-gradient(180deg, #f7fcf8 0%, #eef8f2 44%, #ffffff 100%);
      line-height: 1.6;
      text-rendering: optimizeLegibility;
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input, textarea { font: inherit; }
    :focus-visible { outline: 3px solid rgba(255, 215, 0, .72); outline-offset: 3px; }

    .site-container {
      width: min(1160px, calc(100% - 32px));
      margin-inline: auto;
    }

    .brand-mark {
      display: grid;
      height: 42px;
      width: 42px;
      place-items: center;
      border: 1px solid rgba(255, 215, 0, .58);
      border-radius: 14px;
      color: var(--gold);
      background: radial-gradient(circle at 35% 25%, rgba(255, 215, 0, .28), rgba(8, 26, 17, .95) 62%);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.18), 0 12px 30px rgba(255,215,0,.13);
    }

    .brand-copy { display: grid; gap: 1px; color: white; line-height: 1.15; }
    .brand-copy strong { font-size: 15px; letter-spacing: 0; }
    .brand-copy span { color: #c9d8cf; font-size: 12px; }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 40px;
      padding: 9px 13px;
      border: 1px solid transparent;
      border-radius: 999px;
      color: #d7e6db;
      font-size: 14px;
      font-weight: 700;
      transition: .2s ease;
      white-space: nowrap;
    }
    .nav-link:hover, .nav-link.active {
      border-color: rgba(255, 215, 0, .46);
      color: #fff;
      background: rgba(255, 255, 255, .08);
      box-shadow: 0 8px 24px rgba(0,0,0,.18);
    }

    .btn-primary, .btn-ghost, .btn-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      border-radius: 999px;
      font-weight: 800;
      line-height: 1;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
    }
    .btn-primary {
      border: 1px solid rgba(255, 215, 0, .72);
      color: #112015;
      background: linear-gradient(135deg, #fff5b8, #ffd700 52%, #f6b900);
      box-shadow: 0 14px 32px rgba(255, 215, 0, .24);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 44px rgba(255, 215, 0, .32); }
    .btn-primary:active, .btn-ghost:active, .btn-light:active { transform: translateY(1px) scale(.98); }
    .btn-ghost {
      border: 1px solid rgba(255,255,255,.18);
      color: #f9fff9;
      background: rgba(255,255,255,.07);
    }
    .btn-ghost:hover { background: rgba(255,255,255,.13); border-color: rgba(255,215,0,.35); }
    .btn-light {
      border: 1px solid rgba(10,46,28,.16);
      color: var(--jade);
      background: #ffffff;
      box-shadow: 0 12px 28px rgba(8, 35, 21, .08);
    }
    .btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 999px;
      padding: 7px 10px;
      color: #d7e6db;
      background: rgba(255,255,255,.06);
      font-weight: 800;
      font-size: 12px;
    }
    .chip-gold {
      border-color: rgba(255,215,0,.48);
      color: #1e260d;
      background: linear-gradient(135deg, #fff6bd, #ffd700);
    }

    .panel-soft {
      border: 1px solid rgba(255,255,255,.10);
      border-radius: var(--radius);
      background: rgba(255,255,255,.06);
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 150px 0 78px;
      color: white;
      background:
        linear-gradient(90deg, rgba(5,20,14,.96) 0%, rgba(10,46,28,.9) 48%, rgba(10,46,28,.54) 100%),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }
    .hero:after {
      content: "";
      position: absolute;
      inset: auto -12% -180px -12%;
      height: 280px;
      background: radial-gradient(circle, rgba(255,215,0,.22), transparent 66%);
      pointer-events: none;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid rgba(255,215,0,.42);
      border-radius: 999px;
      padding: 7px 11px;
      color: #fff0ae;
      background: rgba(255,255,255,.08);
      font-size: 13px;
      font-weight: 900;
    }
    .hero h1 {
      margin: 18px 0 18px;
      max-width: 840px;
      font-size: clamp(34px, 5vw, 64px);
      line-height: 1.03;
      font-weight: 950;
      letter-spacing: 0;
    }
    .hero p { max-width: 720px; color: #d9eadf; font-size: 17px; }
    .launch-panel {
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 22px;
      background: rgba(4, 22, 13, .72);
      box-shadow: 0 26px 70px rgba(0,0,0,.28);
      backdrop-filter: blur(14px);
    }
    .count-ring {
      display: grid;
      place-items: center;
      width: 132px;
      height: 132px;
      border-radius: 999px;
      background:
        radial-gradient(circle at center, #072015 0 56%, transparent 58%),
        conic-gradient(var(--gold) 0 72%, rgba(255,255,255,.16) 72% 100%);
      box-shadow: 0 0 0 1px rgba(255,215,0,.28), 0 18px 42px rgba(255,215,0,.18);
    }
    .count-ring strong { display: block; color: white; font-size: 32px; line-height: 1; }
    .count-ring span { display: block; color: #fff0ae; font-size: 12px; font-weight: 800; }

    .section { padding: 76px 0; }
    .section-tight { padding: 54px 0; }
    .section-title { max-width: 720px; }
    .section-title h2 {
      margin: 0;
      color: var(--ink);
      font-size: clamp(27px, 3vw, 42px);
      line-height: 1.16;
      font-weight: 950;
      letter-spacing: 0;
    }
    .section-title p { margin-top: 14px; color: var(--muted); font-size: 16px; }

    .product-stage {
      border: 1px solid var(--line);
      border-radius: 26px;
      background: #fff;
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .stage-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      border-bottom: 1px solid var(--line);
      padding: 14px 16px;
      background: #f9fcfa;
    }
    .dot { width: 10px; height: 10px; border-radius: 999px; background: #d6e4dc; }
    .dot.green { background: #24c36a; box-shadow: 0 0 0 5px rgba(36,195,106,.13); }
    .dot.gold { background: var(--gold); }
    .metric {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 18px;
      background: linear-gradient(180deg, #fff, #f6fbf7);
    }
    .metric strong { color: var(--jade); font-size: 30px; line-height: 1; }
    .metric span { display: block; margin-top: 8px; color: var(--muted); font-size: 13px; }

    .feature-row {
      display: grid;
      grid-template-columns: 46px minmax(0,1fr);
      gap: 14px;
      padding: 18px 0;
      border-bottom: 1px solid var(--line);
    }
    .feature-row:last-child { border-bottom: 0; }
    .icon-box {
      display: grid;
      place-items: center;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      color: var(--jade);
      background: var(--green-soft);
    }
    .feature-row h3, .process-step h3, .faq-item h3 { margin: 0; color: var(--ink); font-size: 18px; font-weight: 900; }
    .feature-row p, .process-step p, .faq-item p { margin: 7px 0 0; color: var(--muted); }

    .scenario-card {
      position: relative;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 20px;
      background: white;
      box-shadow: var(--shadow-soft);
      transition: .22s ease;
    }
    .scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .scenario-card img { height: 190px; width: 100%; object-fit: cover; }
    .scenario-card .body { padding: 20px; }
    .success-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      padding: 6px 9px;
      color: #0f6b3a;
      background: #dcf8e9;
      font-size: 12px;
      font-weight: 900;
    }

    .certificate-wall {
      border-radius: 26px;
      color: white;
      background:
        linear-gradient(135deg, rgba(5,20,14,.96), rgba(18,62,37,.94)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      box-shadow: var(--shadow);
    }
    .cert-item {
      border: 1px solid rgba(255,255,255,.13);
      border-radius: 18px;
      padding: 18px;
      background: rgba(255,255,255,.07);
      min-height: 128px;
    }
    .cert-item strong { display: block; color: #fff0ae; font-size: 18px; }
    .cert-item span { display: block; margin-top: 8px; color: #d7e6db; font-size: 14px; }

    .process-step {
      position: relative;
      border-left: 3px solid rgba(21,160,95,.25);
      padding: 0 0 28px 22px;
    }
    .process-step:before {
      content: attr(data-step);
      position: absolute;
      left: -19px;
      top: 0;
      display: grid;
      place-items: center;
      width: 36px;
      height: 36px;
      border-radius: 999px;
      color: #112015;
      background: linear-gradient(135deg, #fff7bf, #ffd700);
      font-size: 13px;
      font-weight: 950;
      box-shadow: 0 8px 22px rgba(255,215,0,.22);
    }

    .inquiry {
      border: 1px solid var(--line);
      border-radius: 26px;
      background: #fff;
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .form-control {
      width: 100%;
      border: 1px solid rgba(10,46,28,.16);
      border-radius: 14px;
      padding: 13px 14px;
      color: var(--ink);
      background: #fbfefc;
      transition: .18s ease;
    }
    .form-control:focus {
      border-color: var(--green);
      background: white;
      box-shadow: 0 0 0 4px rgba(21,160,95,.12);
      outline: none;
    }
    .label { display: block; margin-bottom: 8px; color: #294235; font-size: 13px; font-weight: 900; }
    .faq-item {
      border-top: 1px solid var(--line);
      padding: 22px 0;
    }
    .cta-band {
      border-radius: 28px;
      color: white;
      background:
        linear-gradient(135deg, rgba(10,46,28,.96), rgba(18,62,37,.92)),
        url('/assets/images/coverpic/cover-7.jpeg') center/cover no-repeat;
      box-shadow: var(--shadow);
    }

    .floating-fab {
      position: fixed;
      left: 16px;
      bottom: 96px;
      z-index: 60;
      display: grid;
      place-items: center;
      width: 58px;
      height: 58px;
      border: 2px solid var(--gold);
      border-radius: 999px;
      color: var(--gold);
      background:
        linear-gradient(145deg, rgba(8,24,15,.96), rgba(18,62,37,.92)),
        repeating-conic-gradient(from 0deg, rgba(255,215,0,.18) 0 8deg, transparent 8deg 16deg);
      box-shadow: 0 4px 20px rgba(255,215,0,.3);
      opacity: .72;
      transition: .25s ease;
      animation: floatFab 2.8s ease-in-out infinite;
    }
    .floating-fab:after {
      content: "";
      position: absolute;
      right: 6px;
      top: 6px;
      width: 10px;
      height: 10px;
      border-radius: 999px;
      background: #d32f2f;
      box-shadow: 0 0 0 5px rgba(211,47,47,.18);
      animation: blinkDot 1.2s infinite;
    }
    .floating-fab:hover { opacity: 1; transform: scale(1.1); }
    .floating-fab:hover svg { transform: rotate(360deg); }
    .floating-fab svg { transition: transform .45s ease; }

    @keyframes floatFab {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }
    @keyframes blinkDot {
      0%, 100% { opacity: 1; }
      50% { opacity: .35; }
    }

    @media (max-width: 1024px) {
      .hero { padding-top: 172px; }
      .section { padding: 62px 0; }
    }
    @media (max-width: 768px) {
      .site-container { width: min(100% - 24px, 720px); }
      .hero { padding: 188px 0 58px; }
      .hero h1 { font-size: clamp(31px, 10vw, 44px); }
      .count-ring { width: 112px; height: 112px; }
      .brand-copy strong { font-size: 14px; }
      .brand-copy span { display: none; }
      .nav-link { font-size: 13px; padding-inline: 11px; }
      .section { padding: 52px 0; }
    }
    @media (max-width: 520px) {
      .btn-primary, .btn-ghost, .btn-light { min-height: 40px; }
      .scenario-card img { height: 164px; }
      .floating-fab { width: 52px; height: 52px; bottom: 88px; }
    }

/* roulang page: article */
:root {
      --bg: #f7fbf8;
      --bg-soft: #eef8f1;
      --ink: #102018;
      --muted: #607268;
      --jade: #0a2e1c;
      --jade-2: #123e25;
      --green: #17b26a;
      --green-soft: #dcfce7;
      --gold: #ffd700;
      --gold-2: #ffb800;
      --red: #d32f2f;
      --line: rgba(10, 46, 28, .14);
      --white: #ffffff;
      --shadow: 0 22px 60px rgba(9, 35, 22, .14);
      --shadow-soft: 0 12px 34px rgba(9, 35, 22, .09);
      --radius: 22px;
      --radius-sm: 14px;
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background:
        radial-gradient(circle at top left, rgba(255, 215, 0, .18), transparent 28rem),
        linear-gradient(180deg, #f9fff9 0%, var(--bg) 42%, #ffffff 100%);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      line-height: 1.62;
      text-rendering: optimizeLegibility;
    }

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

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

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

    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    :focus-visible {
      outline: 3px solid rgba(255, 215, 0, .7);
      outline-offset: 3px;
    }

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

    .brand-mark {
      display: inline-flex;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      color: #071b12;
      background: linear-gradient(135deg, var(--gold), #fff3a2 52%, var(--gold-2));
      box-shadow: 0 10px 28px rgba(255, 215, 0, .22);
      transition: transform .22s ease, box-shadow .22s ease;
    }

    .group:hover .brand-mark {
      transform: translateY(-2px) rotate(-4deg);
      box-shadow: 0 16px 36px rgba(255, 215, 0, .32);
    }

    .brand-copy {
      display: grid;
      gap: 1px;
      min-width: 0;
      color: #fff;
    }

    .brand-copy strong {
      max-width: 220px;
      overflow: hidden;
      font-size: 15px;
      line-height: 1.15;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .brand-copy span {
      color: #d1f2eb;
      font-size: 12px;
    }

    .nav-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 40px;
      border: 1px solid rgba(255, 255, 255, .1);
      border-radius: 999px;
      padding: 9px 13px;
      color: #d7e6db;
      font-size: 14px;
      font-weight: 700;
      transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease;
    }

    .nav-link:hover,
    .nav-link.active {
      border-color: rgba(255, 215, 0, .42);
      color: #fff;
      background: rgba(255, 255, 255, .09);
      transform: translateY(-1px);
    }

    .btn-primary,
    .btn-ghost,
    .btn-dark,
    .btn-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      border-radius: 999px;
      font-weight: 800;
      line-height: 1;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      cursor: pointer;
    }

    .btn-primary {
      border: 1px solid rgba(255, 215, 0, .72);
      color: #071b12;
      background: linear-gradient(135deg, var(--gold), #fff2a7 54%, var(--gold-2));
      box-shadow: 0 12px 30px rgba(255, 184, 0, .22);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 42px rgba(255, 184, 0, .3);
    }

    .btn-primary:active,
    .btn-dark:active,
    .btn-light:active {
      transform: translateY(1px) scale(.99);
    }

    .btn-ghost {
      border: 1px solid rgba(255, 255, 255, .14);
      color: #f5fff8;
      background: rgba(255, 255, 255, .06);
    }

    .btn-ghost:hover {
      border-color: rgba(255, 215, 0, .42);
      background: rgba(255, 255, 255, .11);
    }

    .btn-dark {
      border: 1px solid rgba(10, 46, 28, .18);
      color: #fff;
      background: linear-gradient(135deg, var(--jade), var(--jade-2));
      box-shadow: var(--shadow-soft);
    }

    .btn-dark:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }

    .btn-light {
      border: 1px solid rgba(10, 46, 28, .14);
      color: var(--jade);
      background: #fff;
    }

    .btn-light:hover {
      border-color: rgba(23, 178, 106, .42);
      transform: translateY(-2px);
      box-shadow: var(--shadow-soft);
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid rgba(10, 46, 28, .13);
      border-radius: 999px;
      padding: 7px 11px;
      color: var(--jade);
      background: rgba(255, 255, 255, .78);
      font-size: 13px;
      font-weight: 800;
    }

    .chip-gold {
      border-color: rgba(255, 215, 0, .58);
      color: #352700;
      background: linear-gradient(135deg, #fff7bf, #ffd700);
    }

    .panel-soft {
      border: 1px solid rgba(255, 255, 255, .1);
      border-radius: 16px;
      background: rgba(255, 255, 255, .06);
      backdrop-filter: blur(12px);
    }

    .article-hero {
      position: relative;
      overflow: hidden;
      padding: 154px 0 62px;
      color: #fff;
      background:
        linear-gradient(90deg, rgba(5, 20, 14, .92), rgba(7, 27, 18, .78) 48%, rgba(10, 46, 28, .46)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }

    .article-hero::after {
      content: "";
      position: absolute;
      inset: auto -8% -180px -8%;
      height: 260px;
      background: radial-gradient(ellipse at center, rgba(255, 215, 0, .22), transparent 62%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(330px, .75fr);
      gap: 44px;
      align-items: end;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      border: 1px solid rgba(255, 215, 0, .34);
      border-radius: 999px;
      padding: 8px 12px;
      color: #fff4b8;
      background: rgba(255, 255, 255, .08);
      font-size: 13px;
      font-weight: 800;
    }

    h1 {
      margin: 18px 0 18px;
      max-width: 860px;
      font-size: clamp(34px, 5.6vw, 66px);
      line-height: 1.04;
      letter-spacing: 0;
      font-weight: 900;
    }

    .hero-summary {
      max-width: 760px;
      color: #d8eadf;
      font-size: clamp(16px, 1.8vw, 19px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .coupon-wall {
      position: relative;
      border: 1px solid rgba(255, 215, 0, .32);
      border-radius: 28px;
      padding: 18px;
      background: rgba(255, 255, 255, .1);
      box-shadow: 0 32px 90px rgba(0, 0, 0, .24);
      backdrop-filter: blur(18px);
    }

    .coupon-main {
      position: relative;
      overflow: hidden;
      border-radius: 24px;
      padding: 24px;
      color: #102018;
      background:
        radial-gradient(circle at 85% 12%, rgba(211, 47, 47, .28), transparent 8rem),
        linear-gradient(135deg, #fff9ce, #ffd700 55%, #ffb800);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .55);
    }

    .coupon-main::before,
    .coupon-main::after {
      content: "";
      position: absolute;
      top: 50%;
      width: 28px;
      height: 28px;
      border-radius: 999px;
      background: rgba(7, 27, 18, .78);
      transform: translateY(-50%);
    }

    .coupon-main::before {
      left: -14px;
    }

    .coupon-main::after {
      right: -14px;
    }

    .coupon-value {
      display: block;
      margin-top: 10px;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1;
      font-weight: 950;
    }

    .coupon-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-top: 12px;
    }

    .mini-coupon {
      border: 1px dashed rgba(255, 215, 0, .6);
      border-radius: 18px;
      padding: 12px;
      color: #fff6bd;
      background: rgba(5, 20, 14, .45);
    }

    .meta-strip {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
      color: #d8eadf;
      font-size: 13px;
    }

    .meta-strip span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border: 1px solid rgba(255, 255, 255, .12);
      border-radius: 999px;
      padding: 8px 11px;
      background: rgba(255, 255, 255, .07);
    }

    main {
      position: relative;
      z-index: 2;
      background: linear-gradient(180deg, rgba(247, 251, 248, .96), #fff 46%);
    }

    .section {
      padding: 72px 0;
    }

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

    .section-title {
      max-width: 760px;
    }

    .section-title h2 {
      margin: 0;
      color: var(--jade);
      font-size: clamp(28px, 3.5vw, 44px);
      line-height: 1.14;
      font-weight: 900;
      letter-spacing: 0;
    }

    .section-title p {
      margin: 14px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .content-shell {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 342px;
      gap: 38px;
      align-items: start;
    }

    .article-card {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 28px;
      background: rgba(255, 255, 255, .88);
      box-shadow: var(--shadow);
    }

    .article-cover {
      position: relative;
      min-height: 320px;
      background: #0a2e1c;
    }

    .article-cover img {
      width: 100%;
      height: 100%;
      max-height: 440px;
      object-fit: cover;
    }

    .article-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 45%, rgba(5, 20, 14, .62));
      pointer-events: none;
    }

    .article-body {
      padding: clamp(22px, 4vw, 46px);
    }

    .article-body h2,
    .article-body h3,
    .article-body h4 {
      margin: 30px 0 12px;
      color: var(--jade);
      line-height: 1.22;
      font-weight: 900;
    }

    .article-body h2 {
      font-size: clamp(24px, 3vw, 34px);
    }

    .article-body h3 {
      font-size: clamp(21px, 2.4vw, 28px);
    }

    .article-body p {
      margin: 0 0 18px;
      color: #26382e;
      font-size: 17px;
      line-height: 1.68;
    }

    .article-body ul,
    .article-body ol {
      margin: 18px 0;
      padding-left: 22px;
      color: #26382e;
    }

    .article-body li {
      margin: 9px 0;
    }

    .article-body a {
      color: #087443;
      font-weight: 800;
      text-decoration: underline;
      text-decoration-thickness: 2px;
      text-underline-offset: 3px;
    }

    .article-body blockquote {
      margin: 28px 0;
      border-left: 5px solid var(--gold);
      border-radius: 0 18px 18px 0;
      padding: 18px 22px;
      color: var(--jade);
      background: var(--bg-soft);
      font-weight: 700;
    }

    .empty-state {
      padding: 46px;
      text-align: left;
    }

    .empty-state h2 {
      margin: 0 0 10px;
      color: var(--jade);
      font-size: 30px;
      font-weight: 900;
    }

    .sidebar {
      position: sticky;
      top: 118px;
      display: grid;
      gap: 16px;
    }

    .side-box {
      border: 1px solid var(--line);
      border-radius: 24px;
      padding: 20px;
      background: #fff;
      box-shadow: var(--shadow-soft);
    }

    .side-box.dark {
      color: #fff;
      background:
        linear-gradient(155deg, rgba(10, 46, 28, .96), rgba(18, 62, 37, .94)),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    }

    .side-box h3 {
      margin: 0 0 12px;
      color: inherit;
      font-size: 18px;
      font-weight: 900;
    }

    .side-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .side-list li {
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-size: 14px;
    }

    .side-list li i {
      flex: 0 0 auto;
      margin-top: 2px;
      color: var(--green);
    }

    .dark .side-list li {
      color: #d8eadf;
    }

    .stat-line {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 10px 12px;
      align-items: center;
      margin-top: 14px;
    }

    .progress {
      overflow: hidden;
      height: 9px;
      border-radius: 999px;
      background: rgba(10, 46, 28, .1);
    }

    .progress span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--green), var(--gold));
    }

    .download-strip {
      border: 1px solid rgba(10, 46, 28, .12);
      border-radius: 28px;
      padding: 22px;
      background:
        linear-gradient(135deg, rgba(220, 252, 231, .94), rgba(255, 255, 255, .96)),
        url('/assets/images/coverpic/cover-5.png') right center/contain no-repeat;
      box-shadow: var(--shadow-soft);
    }

    .download-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr auto;
      gap: 22px;
      align-items: center;
    }

    .spec-table {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 24px;
      background: #fff;
      box-shadow: var(--shadow-soft);
    }

    .spec-row {
      display: grid;
      grid-template-columns: 220px 1fr;
      border-bottom: 1px solid rgba(10, 46, 28, .09);
    }

    .spec-row:last-child {
      border-bottom: 0;
    }

    .spec-row strong,
    .spec-row span {
      padding: 16px 18px;
    }

    .spec-row strong {
      color: var(--jade);
      background: var(--bg-soft);
    }

    .spec-row span {
      color: var(--muted);
    }

    .scene-grid {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 30px;
      align-items: center;
    }

    .screenshot-stage {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(10, 46, 28, .12);
      border-radius: 28px;
      padding: 16px;
      background: #fff;
      box-shadow: var(--shadow);
    }

    .screenshot-stage img {
      width: 100%;
      aspect-ratio: 16 / 11;
      border-radius: 20px;
      object-fit: cover;
    }

    .slide-dots {
      display: flex;
      gap: 8px;
      margin-top: 14px;
    }

    .slide-dots span {
      width: 30px;
      height: 7px;
      border-radius: 999px;
      background: rgba(10, 46, 28, .16);
    }

    .slide-dots span:first-child {
      background: linear-gradient(90deg, var(--green), var(--gold));
    }

    .capability-list {
      display: grid;
      gap: 14px;
      margin-top: 22px;
    }

    .capability {
      display: flex;
      gap: 14px;
      border-bottom: 1px solid rgba(10, 46, 28, .09);
      padding-bottom: 14px;
    }

    .capability:last-child {
      border-bottom: 0;
      padding-bottom: 0;
    }

    .capability i {
      flex: 0 0 auto;
      color: var(--green);
    }

    .capability strong {
      display: block;
      color: var(--jade);
      font-size: 16px;
    }

    .capability p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .certificate-wall {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-top: 28px;
    }

    .certificate {
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 18px;
      background: #fff;
      box-shadow: var(--shadow-soft);
      transition: transform .2s ease, border-color .2s ease;
    }

    .certificate:hover {
      border-color: rgba(23, 178, 106, .38);
      transform: translateY(-3px);
    }

    .certificate i {
      color: var(--green);
    }

    .certificate strong {
      display: block;
      margin-top: 10px;
      color: var(--jade);
      font-size: 15px;
    }

    .certificate span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 13px;
    }

    .flow-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 28px;
    }

    .flow-step {
      position: relative;
      border: 1px solid rgba(10, 46, 28, .12);
      border-radius: 22px;
      padding: 20px;
      background: #fff;
      box-shadow: var(--shadow-soft);
    }

    .flow-step b {
      display: inline-flex;
      width: 34px;
      height: 34px;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      color: #071b12;
      background: var(--gold);
      font-size: 14px;
    }

    .flow-step strong {
      display: block;
      margin-top: 16px;
      color: var(--jade);
      font-size: 17px;
    }

    .flow-step p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: .78fr 1.22fr;
      gap: 34px;
      align-items: start;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    details {
      border: 1px solid var(--line);
      border-radius: 20px;
      background: #fff;
      box-shadow: 0 8px 22px rgba(9, 35, 22, .06);
    }

    summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      color: var(--jade);
      font-weight: 900;
      cursor: pointer;
      list-style: none;
    }

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

    summary::after {
      content: "+";
      display: inline-flex;
      width: 26px;
      height: 26px;
      flex: 0 0 auto;
      align-items: center;
      justify-content: center;
      border-radius: 999px;
      color: #071b12;
      background: var(--green-soft);
      font-weight: 900;
    }

    details[open] summary::after {
      content: "-";
      background: var(--gold);
    }

    details p {
      margin: 0;
      padding: 0 20px 20px;
      color: var(--muted);
      font-size: 15px;
    }

    .inquiry {
      overflow: hidden;
      border-radius: 32px;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(5, 20, 14, .94), rgba(10, 46, 28, .88)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      box-shadow: var(--shadow);
    }

    .inquiry-grid {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 30px;
      padding: clamp(24px, 5vw, 46px);
      align-items: center;
    }

    .form-card {
      border: 1px solid rgba(255, 255, 255, .13);
      border-radius: 26px;
      padding: 22px;
      background: rgba(255, 255, 255, .08);
      backdrop-filter: blur(14px);
    }

    .form-grid {
      display: grid;
      gap: 12px;
    }

    .field {
      display: grid;
      gap: 7px;
    }

    .field label {
      color: #fff4b8;
      font-size: 13px;
      font-weight: 800;
    }

    .field input,
    .field textarea,
    .field select {
      width: 100%;
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: 16px;
      padding: 12px 14px;
      color: #fff;
      background: rgba(0, 0, 0, .18);
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .field textarea {
      min-height: 110px;
      resize: vertical;
    }

    .field input::placeholder,
    .field textarea::placeholder {
      color: rgba(255, 255, 255, .58);
    }

    .field input:focus,
    .field textarea:focus,
    .field select:focus {
      border-color: rgba(255, 215, 0, .62);
      box-shadow: 0 0 0 4px rgba(255, 215, 0, .12);
      background: rgba(0, 0, 0, .26);
    }

    .fab {
      position: fixed;
      left: 1rem;
      bottom: 6rem;
      z-index: 50;
      display: inline-flex;
      width: 58px;
      height: 58px;
      align-items: center;
      justify-content: center;
      border: 3px solid #ffd700;
      border-radius: 50%;
      color: #ffd700;
      background:
        radial-gradient(circle at 34% 24%, rgba(255, 255, 255, .18), transparent 28%),
        linear-gradient(145deg, #06170f, #8b0000);
      box-shadow: 0 4px 20px rgba(255, 215, 0, .3);
      opacity: .72;
      transition: transform .26s ease, opacity .26s ease, box-shadow .26s ease;
      animation: floatFab 3.6s ease-in-out infinite;
    }

    .fab::after {
      content: "";
      position: absolute;
      right: 4px;
      top: 3px;
      width: 11px;
      height: 11px;
      border: 2px solid #fff1a4;
      border-radius: 999px;
      background: #d32f2f;
      animation: blinkDot 1.2s ease-in-out infinite;
    }

    .fab:hover {
      opacity: 1;
      transform: scale(1.1);
      box-shadow: 0 10px 32px rgba(255, 215, 0, .42);
    }

    .fab:hover i {
      animation: spinIcon .55s ease;
    }

    .fab:active {
      transform: scale(.95) translateY(2px);
    }

    @keyframes floatFab {
      0%, 100% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(-8px);
      }
    }

    @keyframes blinkDot {
      0%, 100% {
        opacity: 1;
        transform: scale(1);
      }
      50% {
        opacity: .35;
        transform: scale(.72);
      }
    }

    @keyframes spinIcon {
      to {
        transform: rotate(360deg);
      }
    }

    @media (max-width: 1024px) {
      .hero-grid,
      .content-shell,
      .scene-grid,
      .faq-layout,
      .inquiry-grid {
        grid-template-columns: 1fr;
      }

      .sidebar {
        position: static;
        grid-template-columns: repeat(2, 1fr);
      }

      .download-grid {
        grid-template-columns: 1fr;
      }

      .certificate-wall,
      .flow-wrap {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .article-hero {
        padding-top: 174px;
      }

      .site-container {
        width: min(100% - 24px, var(--container));
      }

      .brand-copy strong {
        max-width: 168px;
      }

      .nav-link {
        min-height: 38px;
        padding: 8px 11px;
        font-size: 13px;
      }

      .section {
        padding: 54px 0;
      }

      .article-cover {
        min-height: 220px;
      }

      .sidebar,
      .certificate-wall,
      .flow-wrap,
      .coupon-row {
        grid-template-columns: 1fr;
      }

      .spec-row {
        grid-template-columns: 1fr;
      }

      .spec-row strong,
      .spec-row span {
        padding: 13px 15px;
      }
    }

    @media (max-width: 520px) {
      .article-hero {
        padding-top: 194px;
        padding-bottom: 44px;
      }

      h1 {
        font-size: 32px;
      }

      .coupon-main {
        padding: 20px;
      }

      .hero-actions,
      .meta-strip {
        flex-direction: column;
        align-items: stretch;
      }

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

      .article-body,
      .empty-state {
        padding: 22px;
      }

      .inquiry-grid {
        padding: 20px;
      }

      .fab {
        width: 52px;
        height: 52px;
        bottom: 5.5rem;
      }
    }