/* roulang page: index */
:root{
      --bg:#090611;
      --bg-2:#100a1d;
      --panel:#151023;
      --panel-2:#1b132d;
      --panel-3:#21183a;
      --text:#f4efff;
      --muted:#b7aeca;
      --soft:#8f83a8;
      --line:rgba(183,154,255,.18);
      --line-strong:rgba(126,248,220,.38);
      --purple:#9b67ff;
      --purple-2:#6f45e8;
      --cyan:#7ef8dc;
      --green:#9dff8f;
      --amber:#ffd36a;
      --danger:#ff7b9c;
      --shadow:0 24px 70px rgba(0,0,0,.42);
      --shadow-soft:0 14px 36px rgba(8,4,20,.28);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --sidebar:248px;
      --container:1180px;
      --transition:220ms ease;
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Arial,sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 18% 5%, rgba(155,103,255,.26), transparent 30%),
        radial-gradient(circle at 78% 12%, rgba(126,248,220,.15), transparent 28%),
        radial-gradient(circle at 60% 80%, rgba(255,211,106,.08), transparent 30%),
        linear-gradient(135deg, #08050f 0%, #12091f 44%, #070911 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.28;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px),
        radial-gradient(circle, rgba(255,255,255,.09) 1px, transparent 1.5px);
      background-size:54px 54px,54px 54px,22px 22px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.3) 60%, transparent);
      z-index:-2;
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:linear-gradient(90deg, rgba(9,6,17,.88), transparent 28%, rgba(9,6,17,.45));
      z-index:-1;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), border-color var(--transition), transform var(--transition), background var(--transition), box-shadow var(--transition);
    }
    img,svg{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(126,248,220,.28);color:#fff}
    :focus-visible{outline:3px solid rgba(126,248,220,.68);outline-offset:4px;border-radius:10px}

    .skip-link{
      position:absolute;
      left:12px;
      top:-60px;
      z-index:80;
      padding:10px 14px;
      background:var(--cyan);
      color:#081013;
      border-radius:12px;
      font-weight:800;
    }
    .skip-link:focus{top:12px}

    .app-shell{display:flex;min-height:100vh}
    .side-nav{
      position:fixed;
      left:0;
      top:0;
      bottom:0;
      width:var(--sidebar);
      padding:22px 18px;
      background:linear-gradient(180deg, rgba(12,8,21,.96), rgba(16,10,29,.92));
      border-right:1px solid var(--line);
      box-shadow:18px 0 50px rgba(0,0,0,.26);
      z-index:50;
      display:flex;
      flex-direction:column;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 10px 18px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      color:#081013;
      background:
        radial-gradient(circle at 35% 28%, #fff 0 8%, transparent 9%),
        conic-gradient(from 180deg, var(--cyan), var(--purple), var(--amber), var(--cyan));
      box-shadow:0 0 34px rgba(126,248,220,.25);
      flex:0 0 auto;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      width:16px;
      height:16px;
      border-left:12px solid #0e1020;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      margin-left:5px;
    }
    .brand-text strong{
      display:block;
      font-size:15px;
      line-height:1.35;
      letter-spacing:.02em;
    }
    .brand-text span{
      display:block;
      margin-top:3px;
      color:var(--soft);
      font-size:12px;
    }
    .nav-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .nav-link{
      position:relative;
      display:flex;
      align-items:center;
      gap:10px;
      padding:13px 12px;
      border-radius:16px;
      color:var(--muted);
      border:1px solid transparent;
      background:rgba(255,255,255,.025);
      font-weight:700;
    }
    .nav-link .nav-dot{
      width:10px;
      height:10px;
      border-radius:999px;
      background:rgba(183,174,202,.45);
      box-shadow:0 0 0 5px rgba(183,174,202,.05);
    }
    .nav-link:hover{
      color:var(--text);
      border-color:rgba(126,248,220,.28);
      background:rgba(126,248,220,.06);
      transform:translateX(2px);
    }
    .nav-link.active{
      color:#fff;
      border-color:rgba(126,248,220,.38);
      background:linear-gradient(135deg, rgba(126,248,220,.12), rgba(155,103,255,.12));
      box-shadow:inset 3px 0 0 var(--cyan);
    }
    .nav-link.active .nav-dot{background:var(--cyan);box-shadow:0 0 18px rgba(126,248,220,.75)}
    .nav-note{
      margin-top:auto;
      padding:14px;
      border-radius:20px;
      background:
        radial-gradient(circle at 20% 0%, rgba(126,248,220,.18), transparent 36%),
        rgba(255,255,255,.045);
      border:1px solid rgba(126,248,220,.18);
      color:var(--muted);
      font-size:13px;
    }
    .nav-note strong{display:block;color:var(--text);margin-bottom:4px}
    .nav-note a{color:var(--cyan);font-weight:800}
    .nav-note a:hover{text-decoration:underline}

    .mobile-topbar{
      display:none;
      position:sticky;
      top:0;
      z-index:60;
      height:70px;
      align-items:center;
      justify-content:space-between;
      padding:0 18px;
      background:rgba(10,7,18,.82);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .mobile-logo{display:flex;align-items:center;gap:10px;font-weight:900}
    .mobile-logo .brand-mark{width:36px;height:36px;border-radius:14px}
    .menu-btn{
      width:42px;
      height:42px;
      border-radius:14px;
      color:var(--text);
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      display:grid;
      place-items:center;
    }
    .menu-btn:hover{background:rgba(126,248,220,.1);border-color:rgba(126,248,220,.34)}
    .menu-lines,.menu-lines::before,.menu-lines::after{
      width:18px;height:2px;background:currentColor;border-radius:999px;display:block;content:"";transition:var(--transition)
    }
    .menu-lines::before{transform:translateY(-6px)}
    .menu-lines::after{transform:translateY(4px)}
    .mobile-drawer{
      display:none;
      position:fixed;
      inset:70px 12px auto 12px;
      z-index:59;
      padding:14px;
      border-radius:22px;
      background:rgba(16,10,29,.96);
      border:1px solid rgba(126,248,220,.2);
      box-shadow:var(--shadow);
    }
    .mobile-drawer.open{display:block}

    .main{
      width:100%;
      margin-left:var(--sidebar);
      min-width:0;
    }
    .container{
      width:min(var(--container), calc(100% - 56px));
      margin:0 auto;
    }
    .section{
      position:relative;
      padding:86px 0;
    }
    .section.compact{padding:60px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--cyan);
      background:rgba(126,248,220,.07);
      border:1px solid rgba(126,248,220,.22);
      font-size:13px;
      font-weight:800;
      letter-spacing:.02em;
    }
    .section-kicker::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 14px rgba(126,248,220,.8);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      margin-bottom:18px;
      font-size:clamp(32px,5vw,56px);
      line-height:1.12;
      letter-spacing:-.04em;
      font-weight:900;
    }
    h2{
      margin:10px 0 0;
      font-size:clamp(28px,3.2vw,38px);
      line-height:1.22;
      letter-spacing:-.03em;
      font-weight:900;
    }
    h3{
      margin-bottom:10px;
      font-size:21px;
      line-height:1.35;
      font-weight:850;
    }
    .lead{
      max-width:850px;
      color:var(--muted);
      font-size:17px;
      line-height:1.9;
    }
    .muted{color:var(--muted)}
    .gradient-text{
      background:linear-gradient(92deg, #fff 0%, #dcd0ff 42%, var(--cyan) 72%, var(--amber) 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
      text-shadow:0 0 34px rgba(155,103,255,.16);
    }

    .btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:13px 18px;
      border-radius:16px;
      font-weight:900;
      border:1px solid rgba(255,255,255,.12);
      user-select:none;
      white-space:nowrap;
    }
    .btn-primary{
      color:#071012;
      background:linear-gradient(135deg, var(--cyan), #d9fff5 48%, var(--amber));
      box-shadow:0 18px 34px rgba(126,248,220,.18), inset 0 0 0 1px rgba(255,255,255,.45);
    }
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.045);
      border-color:rgba(155,103,255,.36);
      box-shadow:inset 0 0 28px rgba(155,103,255,.08);
    }
    .btn-ghost{
      color:var(--cyan);
      background:transparent;
      border-color:rgba(126,248,220,.28);
    }
    .btn:hover{transform:translateY(-3px);box-shadow:0 20px 46px rgba(126,248,220,.2)}
    .btn-secondary:hover,.btn-ghost:hover{border-color:rgba(126,248,220,.55);background:rgba(126,248,220,.08)}
    .btn:active{transform:translateY(-1px) scale(.99)}

    .badge-row{display:flex;flex-wrap:wrap;gap:10px}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 11px;
      border-radius:999px;
      color:#e7deff;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.11);
      font-size:13px;
      font-weight:750;
    }
    .badge i{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--purple);
      box-shadow:0 0 12px rgba(155,103,255,.75);
    }
    .badge.cyan i{background:var(--cyan);box-shadow:0 0 12px rgba(126,248,220,.8)}
    .badge.amber i{background:var(--amber);box-shadow:0 0 12px rgba(255,211,106,.7)}

    .hero{
      padding:34px 0 82px;
    }
    .hero-wrap{
      position:relative;
      padding:30px;
      min-height:620px;
      border-radius:34px;
      overflow:hidden;
      background:
        radial-gradient(circle at 50% 12%, rgba(126,248,220,.22), transparent 20%),
        radial-gradient(circle at 18% 42%, rgba(155,103,255,.25), transparent 34%),
        linear-gradient(145deg, rgba(255,255,255,.075), rgba(255,255,255,.028));
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow);
    }
    .hero-wrap::before{
      content:"";
      position:absolute;
      inset:22px;
      border-radius:28px;
      border:1px solid rgba(126,248,220,.12);
      background:
        linear-gradient(90deg, transparent 49%, rgba(126,248,220,.12) 50%, transparent 51%),
        linear-gradient(transparent 49%, rgba(155,103,255,.11) 50%, transparent 51%);
      background-size:86px 86px;
      opacity:.42;
      pointer-events:none;
    }
    .hero-wrap::after{
      content:"";
      position:absolute;
      left:50%;
      top:48%;
      width:560px;
      height:560px;
      transform:translate(-50%,-50%);
      border-radius:50%;
      background:
        radial-gradient(circle, transparent 38%, rgba(126,248,220,.22) 39% 40%, transparent 41%),
        conic-gradient(from 30deg, transparent, rgba(126,248,220,.32), transparent, rgba(155,103,255,.3), transparent);
      filter:blur(.2px);
      opacity:.36;
      animation:slowspin 30s linear infinite;
      pointer-events:none;
    }
    @keyframes slowspin{to{transform:translate(-50%,-50%) rotate(360deg)}}
    .hero-status{
      position:relative;
      z-index:2;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:space-between;
      margin-bottom:42px;
      padding:12px 14px;
      border-radius:18px;
      background:rgba(8,6,16,.56);
      border:1px solid rgba(126,248,220,.18);
      backdrop-filter:blur(14px);
    }
    .status-left,.status-right{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
    .status-chip{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .pulse{
      width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 16px rgba(157,255,143,.85);
      animation:pulse 1.8s ease-in-out infinite;
    }
    @keyframes pulse{50%{transform:scale(1.4);opacity:.55}}
    .hero-center{
      position:relative;
      z-index:2;
      display:grid;
      place-items:center;
      text-align:center;
      max-width:940px;
      margin:0 auto;
      padding:18px 0 24px;
    }
    .hero-center .lead{margin:0 auto 24px}
    .hero-center .btn-row{justify-content:center;margin:24px 0}
    .hero-keywords{justify-content:center;margin-top:20px}
    .icon-matrix{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:repeat(6,1fr);
      gap:14px;
      max-width:860px;
      margin:26px auto 0;
    }
    .matrix-tile{
      min-height:86px;
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:22px;
      background:rgba(10,7,18,.66);
      border:1px solid rgba(255,255,255,.11);
      box-shadow:inset 0 0 30px rgba(126,248,220,.035);
      transition:var(--transition);
    }
    .matrix-tile:hover{
      transform:translateY(-4px);
      border-color:rgba(126,248,220,.42);
      box-shadow:0 16px 30px rgba(0,0,0,.26), inset 0 0 34px rgba(126,248,220,.08);
    }
    .tile-icon{
      width:28px;height:28px;border-radius:11px;
      display:grid;place-items:center;
      color:#071012;
      background:linear-gradient(135deg,var(--cyan),var(--purple));
      font-weight:900;
    }
    .matrix-tile span{font-size:13px;color:var(--muted);font-weight:800}

    .panel{
      border:1px solid rgba(255,255,255,.11);
      background:linear-gradient(145deg, rgba(255,255,255,.075), rgba(255,255,255,.032));
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(14px);
    }
    .pain-layout{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:30px;
      align-items:start;
    }
    .sticky-copy{position:sticky;top:28px}
    .pain-stack{
      display:grid;
      gap:16px;
    }
    .pain-card{
      position:relative;
      padding:22px 22px 22px 78px;
      border-radius:24px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.1);
      transition:var(--transition);
      overflow:hidden;
    }
    .pain-card:nth-child(2){transform:translateX(34px)}
    .pain-card:nth-child(3){transform:translateX(12px)}
    .pain-card:nth-child(4){transform:translateX(52px)}
    .pain-card::before{
      content:attr(data-no);
      position:absolute;
      left:20px;
      top:22px;
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#0b1012;
      font-weight:900;
      background:linear-gradient(135deg,var(--amber),var(--cyan));
      box-shadow:0 0 24px rgba(255,211,106,.18);
    }
    .pain-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(110deg, transparent, rgba(126,248,220,.1), transparent);
      transform:translateX(-120%);
      transition:520ms ease;
    }
    .pain-card:hover{
      transform:translateX(0) translateY(-4px);
      border-color:rgba(126,248,220,.34);
      box-shadow:0 22px 42px rgba(0,0,0,.26);
    }
    .pain-card:hover::after{transform:translateX(120%)}
    .pain-card p{margin:0;color:var(--muted);font-size:15px}

    .solution-map{
      position:relative;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .solution-map::before{
      content:"";
      position:absolute;
      left:8%;
      right:8%;
      top:58px;
      height:2px;
      background:linear-gradient(90deg, transparent, rgba(126,248,220,.55), rgba(155,103,255,.55), transparent);
      box-shadow:0 0 18px rgba(126,248,220,.28);
      z-index:0;
    }
    .step-card{
      position:relative;
      z-index:1;
      padding:22px;
      min-height:232px;
      border-radius:26px;
      background:linear-gradient(180deg, rgba(27,19,45,.88), rgba(13,9,23,.88));
      border:1px solid rgba(255,255,255,.12);
      transition:var(--transition);
    }
    .step-card:hover{
      transform:translateY(-5px);
      border-color:rgba(126,248,220,.38);
      box-shadow:0 22px 46px rgba(0,0,0,.28);
    }
    .step-icon{
      width:52px;height:52px;border-radius:18px;
      display:grid;place-items:center;
      margin-bottom:18px;
      color:#081013;
      font-size:23px;
      font-weight:900;
      background:linear-gradient(135deg,var(--cyan),var(--purple));
    }
    .step-card p{margin:0 0 14px;color:var(--muted);font-size:15px}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--cyan);
      font-weight:900;
      font-size:14px;
    }
    .text-link:hover{text-decoration:underline;text-underline-offset:4px;transform:translateX(3px)}

    .result-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .metrics-panel{
      padding:26px;
      border-radius:30px;
      background:
        radial-gradient(circle at 70% 0%, rgba(126,248,220,.16), transparent 36%),
        rgba(255,255,255,.05);
      border:1px solid rgba(126,248,220,.16);
    }
    .metric-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
      margin-top:22px;
    }
    .metric{
      padding:18px;
      border-radius:20px;
      background:rgba(8,6,16,.48);
      border:1px solid rgba(255,255,255,.1);
    }
    .metric strong{
      display:block;
      margin-bottom:6px;
      font-size:26px;
      line-height:1;
      color:var(--cyan);
      letter-spacing:-.03em;
    }
    .metric span{color:var(--muted);font-size:13px}
    .ability-list{
      display:grid;
      gap:14px;
    }
    .ability{
      padding:18px 18px 18px 48px;
      border-radius:20px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.1);
      position:relative;
    }
    .ability::before{
      content:"";
      position:absolute;
      left:18px;
      top:24px;
      width:13px;height:13px;border-radius:5px;
      background:var(--amber);
      box-shadow:0 0 18px rgba(255,211,106,.5);
    }
    .ability h3{font-size:18px;margin-bottom:5px}
    .ability p{margin:0;color:var(--muted);font-size:14px}

    .updates-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);
      gap:20px;
      align-items:start;
    }
    .update-feature{
      min-height:360px;
      padding:26px;
      position:relative;
      overflow:hidden;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .update-feature::after{
      content:"";
      position:absolute;
      right:-80px;
      bottom:-110px;
      width:300px;
      height:300px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(126,248,220,.22), transparent 62%);
      pointer-events:none;
    }
    .update-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
    .update-title{
      display:block;
      font-size:27px;
      line-height:1.35;
      font-weight:900;
      margin-bottom:14px;
    }
    .update-title:hover{color:var(--cyan)}
    .update-summary{color:var(--muted);margin-bottom:20px}
    .update-list{
      display:grid;
      gap:12px;
    }
    .update-item{
      padding:17px;
      border-radius:20px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.1);
      transition:var(--transition);
    }
    .update-item:hover{
      transform:translateY(-3px);
      border-color:rgba(126,248,220,.34);
      background:rgba(126,248,220,.055);
    }
    .update-item a{
      display:block;
      font-size:17px;
      font-weight:900;
      line-height:1.45;
      margin-bottom:7px;
    }
    .update-item a:hover{color:var(--cyan)}
    .update-item p{
      margin:0 0 10px;
      color:var(--muted);
      font-size:14px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .mini-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      color:var(--soft);
      font-size:12px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:5px 9px;
      border-radius:999px;
      color:var(--cyan);
      background:rgba(126,248,220,.08);
      border:1px solid rgba(126,248,220,.16);
      font-size:12px;
      font-weight:800;
    }
    .empty-state{
      grid-column:1/-1;
      padding:34px;
      text-align:center;
      border-radius:26px;
      background:
        radial-gradient(circle at 50% 0%, rgba(126,248,220,.16), transparent 30%),
        rgba(255,255,255,.045);
      border:1px dashed rgba(126,248,220,.3);
    }
    .empty-orb{
      width:70px;height:70px;border-radius:24px;
      margin:0 auto 16px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(126,248,220,.28), rgba(155,103,255,.22));
      border:1px solid rgba(255,255,255,.12);
      font-size:28px;
    }

    .guide-shell{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:24px;
    }
    .guide-panel{
      padding:24px;
      border-radius:28px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.1);
    }
    .guide-list{
      list-style:none;
      padding:0;
      margin:20px 0 0;
      display:grid;
      gap:12px;
    }
    .guide-list li{
      display:flex;
      gap:12px;
      padding:14px;
      border-radius:18px;
      background:rgba(8,6,16,.35);
      border:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .guide-list b{
      color:var(--amber);
      min-width:28px;
    }
    .topic-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .topic-card{
      padding:20px;
      border-radius:22px;
      min-height:150px;
      background:
        linear-gradient(145deg, rgba(155,103,255,.11), rgba(126,248,220,.045)),
        rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.1);
      transition:var(--transition);
    }
    .topic-card:hover{
      transform:translateY(-4px);
      border-color:rgba(126,248,220,.32);
    }
    .topic-card p{margin:0;color:var(--muted);font-size:14px}

    .compare-table-wrap{
      overflow:auto;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.11);
      background:rgba(255,255,255,.04);
    }
    .compare-table{
      width:100%;
      border-collapse:collapse;
      min-width:720px;
    }
    .compare-table th,.compare-table td{
      padding:18px;
      text-align:left;
      border-bottom:1px solid rgba(255,255,255,.09);
      vertical-align:top;
    }
    .compare-table th{
      color:#fff;
      background:rgba(126,248,220,.07);
      font-size:15px;
    }
    .compare-table td{color:var(--muted)}
    .compare-table tr:last-child td{border-bottom:0}
    .check{color:var(--green);font-weight:900}
    .warn{color:var(--amber);font-weight:900}

    .voice-grid{
      display:grid;
      grid-template-columns:1fr 1.05fr .9fr;
      gap:16px;
      align-items:start;
    }
    .voice-card{
      padding:22px;
      border-radius:26px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.11);
      transition:var(--transition);
    }
    .voice-card:nth-child(2){margin-top:34px}
    .voice-card:hover{
      transform:translateY(-4px);
      border-color:rgba(126,248,220,.32);
      box-shadow:0 18px 36px rgba(0,0,0,.22);
    }
    .avatar{
      width:44px;height:44px;border-radius:16px;
      display:grid;place-items:center;
      color:#081013;
      font-weight:900;
      background:linear-gradient(135deg,var(--cyan),var(--amber));
      margin-bottom:14px;
    }
    .quote{
      color:#e6def6;
      margin-bottom:16px;
    }
    .voice-card small{color:var(--soft)}

    .faq-wrap{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:26px;
      align-items:start;
    }
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border-radius:22px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.11);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:19px 20px;
      color:var(--text);
      background:transparent;
      text-align:left;
      font-weight:900;
    }
    .faq-icon{
      width:28px;height:28px;border-radius:10px;
      display:grid;place-items:center;
      flex:0 0 auto;
      background:rgba(126,248,220,.08);
      color:var(--cyan);
      border:1px solid rgba(126,248,220,.18);
      transition:var(--transition);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height 260ms ease;
    }
    .faq-answer p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
    }
    .faq-item.open{
      border-color:rgba(126,248,220,.32);
      background:linear-gradient(135deg, rgba(126,248,220,.07), rgba(155,103,255,.05));
    }
    .faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(126,248,220,.16)}
    .faq-item.open .faq-answer{max-height:220px}

    .cta{
      padding:0 0 86px;
    }
    .cta-band{
      position:relative;
      overflow:hidden;
      padding:42px;
      border-radius:34px;
      background:
        radial-gradient(circle at 18% 35%, rgba(126,248,220,.24), transparent 26%),
        radial-gradient(circle at 82% 60%, rgba(155,103,255,.3), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,.08), rgba(255,255,255,.035));
      border:1px solid rgba(126,248,220,.22);
      box-shadow:var(--shadow);
    }
    .cta-band::before{
      content:"";
      position:absolute;
      right:-100px;
      top:-140px;
      width:430px;
      height:430px;
      border-radius:50%;
      border:1px solid rgba(126,248,220,.22);
      box-shadow:inset 0 0 40px rgba(126,248,220,.12), 0 0 60px rgba(155,103,255,.12);
      opacity:.72;
    }
    .cta-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr auto;
      gap:26px;
      align-items:center;
    }
    .cta-content p{margin:10px 0 0;color:var(--muted);max-width:720px}

    .site-footer{
      margin-left:var(--sidebar);
      background:linear-gradient(180deg, rgba(8,5,14,.4), rgba(4,3,8,.92));
      border-top:1px solid rgba(255,255,255,.08);
      padding:42px 0;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:12px;
      font-weight:900;
    }
    .footer-brand .brand-mark{width:38px;height:38px;border-radius:14px}
    .footer-text{max-width:620px;color:var(--muted);font-size:14px}
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:8px 10px;
      border-radius:12px;
      color:var(--muted);
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.03);
      font-size:13px;
      font-weight:750;
    }
    .footer-links a:hover{color:var(--cyan);border-color:rgba(126,248,220,.28)}
    .copyright{
      margin-top:24px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--soft);
      font-size:13px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
    }

    @media (max-width:1200px){
      :root{--sidebar:224px;--container:1040px}
      .icon-matrix{grid-template-columns:repeat(3,1fr)}
      .solution-map{grid-template-columns:repeat(2,1fr)}
      .solution-map::before{display:none}
      .pain-card:nth-child(n){transform:none}
    }
    @media (max-width:992px){
      .app-shell{display:block}
      .side-nav{display:none}
      .mobile-topbar{display:flex}
      .main,.site-footer{margin-left:0}
      .hero{padding-top:20px}
      .hero-wrap{min-height:auto;padding:24px}
      .section{padding:66px 0}
      .pain-layout,.result-grid,.guide-shell,.faq-wrap,.updates-grid,.cta-content{grid-template-columns:1fr}
      .sticky-copy{position:static}
      .metric-row{grid-template-columns:repeat(3,1fr)}
      .voice-grid{grid-template-columns:1fr}
      .voice-card:nth-child(2){margin-top:0}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:768px){
      .container{width:min(100% - 34px, var(--container))}
      .section{padding:54px 0}
      .section-head{display:block}
      .lead{font-size:16px}
      .hero-status{align-items:flex-start}
      .icon-matrix{grid-template-columns:repeat(2,1fr);gap:11px}
      .matrix-tile{min-height:76px}
      .metric-row{grid-template-columns:1fr}
      .topic-grid{grid-template-columns:1fr}
      .btn-row{align-items:stretch}
      .btn{width:100%}
      .update-title{font-size:22px}
      .cta-band{padding:28px}
    }
    @media (max-width:520px){
      .mobile-topbar{height:64px;padding:0 14px}
      .mobile-drawer{inset:64px 10px auto 10px}
      .mobile-logo span{max-width:190px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .hero-wrap{padding:18px;border-radius:26px}
      .hero-wrap::before{inset:12px;border-radius:20px;background-size:58px 58px}
      .hero-wrap::after{width:360px;height:360px}
      h1{letter-spacing:-.035em}
      .status-right{display:none}
      .icon-matrix{grid-template-columns:1fr 1fr}
      .section-kicker{font-size:12px}
      .pain-card{padding:20px 18px 20px 66px}
      .pain-card::before{left:16px;width:34px;height:34px}
      .step-card{min-height:auto}
      .compare-table{min-width:620px}
      .copyright{display:block}
    }

/* roulang page: article */
:root{
      --bg:#090611;
      --bg-2:#100a1d;
      --panel:#151023;
      --panel-2:#1b132d;
      --panel-3:#21183a;
      --text:#f4efff;
      --muted:#b7aeca;
      --soft:#8f83a8;
      --line:rgba(183,154,255,.18);
      --line-strong:rgba(126,248,220,.38);
      --purple:#9b67ff;
      --purple-2:#6f45e8;
      --cyan:#7ef8dc;
      --green:#9dff8f;
      --amber:#ffd36a;
      --danger:#ff7b9c;
      --shadow:0 24px 70px rgba(0,0,0,.42);
      --shadow-soft:0 14px 36px rgba(8,4,20,.28);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --sidebar:224px;
      --container:1040px;
      --transition:220ms ease;
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,Arial,sans-serif;
    }
    *{box-sizing:border-box}
    *::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 18% 5%, rgba(155,103,255,.26), transparent 30%),
        radial-gradient(circle at 78% 12%, rgba(126,248,220,.15), transparent 28%),
        radial-gradient(circle at 60% 80%, rgba(255,211,106,.08), transparent 30%),
        linear-gradient(135deg, #08050f 0%, #12091f 44%, #070911 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.28;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px),
        radial-gradient(circle, rgba(255,255,255,.09) 1px, transparent 1.5px);
      background-size:54px 54px,54px 54px,22px 22px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.9), rgba(0,0,0,.3) 60%, transparent);
      z-index:-2;
    }
    body::after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:linear-gradient(90deg, rgba(9,6,17,.88), transparent 28%, rgba(9,6,17,.45));
      z-index:-1;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), border-color var(--transition), transform var(--transition), background var(--transition), box-shadow var(--transition), opacity var(--transition);
    }
    img,svg{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(126,248,220,.28);color:#fff}
    :focus-visible{outline:3px solid rgba(126,248,220,.6);outline-offset:3px}

    .container{
      width:min(var(--container), calc(100% - 48px));
      margin-inline:auto;
    }
    .page-main{
      min-height:100vh;
      margin-left:var(--sidebar);
      position:relative;
    }
    .side-nav{
      position:fixed;
      left:0;
      top:0;
      bottom:0;
      width:var(--sidebar);
      padding:22px 18px;
      background:linear-gradient(180deg, rgba(12,8,21,.96), rgba(16,10,29,.92));
      border-right:1px solid var(--line);
      box-shadow:18px 0 50px rgba(0,0,0,.26);
      z-index:50;
      display:flex;
      flex-direction:column;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 10px 18px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      color:#081013;
      background:
        radial-gradient(circle at 35% 28%, #fff 0 8%, transparent 9%),
        conic-gradient(from 180deg, var(--cyan), var(--purple), var(--amber), var(--cyan));
      box-shadow:0 0 34px rgba(126,248,220,.25);
      flex:0 0 auto;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      width:16px;
      height:16px;
      border-left:12px solid #0e1020;
      border-top:8px solid transparent;
      border-bottom:8px solid transparent;
      margin-left:5px;
    }
    .brand-text strong{
      display:block;
      font-size:15px;
      line-height:1.35;
      letter-spacing:.02em;
    }
    .brand-text span{
      display:block;
      margin-top:3px;
      color:var(--soft);
      font-size:12px;
    }
    .nav-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .nav-link{
      position:relative;
      display:flex;
      align-items:center;
      gap:10px;
      padding:13px 12px;
      border-radius:16px;
      color:var(--muted);
      border:1px solid transparent;
      background:rgba(255,255,255,.025);
      font-weight:700;
    }
    .nav-link .nav-dot{
      width:10px;
      height:10px;
      border-radius:999px;
      background:rgba(183,174,202,.45);
      box-shadow:0 0 0 5px rgba(183,174,202,.05);
    }
    .nav-link:hover{
      color:var(--text);
      border-color:rgba(126,248,220,.28);
      background:rgba(126,248,220,.06);
      transform:translateX(2px);
    }
    .nav-link.active{
      color:#fff;
      border-color:rgba(126,248,220,.38);
      background:linear-gradient(135deg, rgba(126,248,220,.12), rgba(155,103,255,.12));
      box-shadow:inset 3px 0 0 var(--cyan);
    }
    .nav-link.active .nav-dot{background:var(--cyan);box-shadow:0 0 18px rgba(126,248,220,.75)}
    .nav-note{
      margin-top:auto;
      padding:14px;
      border-radius:20px;
      background:
        radial-gradient(circle at 20% 0%, rgba(126,248,220,.18), transparent 36%),
        rgba(255,255,255,.045);
      border:1px solid rgba(126,248,220,.18);
      color:var(--muted);
      font-size:13px;
    }
    .nav-note strong{display:block;color:var(--text);margin-bottom:4px}
    .nav-note a{color:var(--cyan);font-weight:800}
    .nav-note a:hover{text-decoration:underline}
    .mobile-topbar{
      display:none;
      position:sticky;
      top:0;
      z-index:60;
      height:70px;
      align-items:center;
      justify-content:space-between;
      padding:0 18px;
      background:rgba(10,7,18,.82);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .mobile-logo{display:flex;align-items:center;gap:10px;font-weight:900}
    .mobile-logo .brand-mark{width:36px;height:36px;border-radius:14px}
    .menu-btn{
      width:42px;
      height:42px;
      border-radius:14px;
      color:var(--text);
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      display:grid;
      place-items:center;
    }
    .menu-btn:hover{background:rgba(126,248,220,.1);border-color:rgba(126,248,220,.34)}
    .menu-lines,.menu-lines::before,.menu-lines::after{
      width:18px;
      height:2px;
      border-radius:999px;
      background:var(--text);
      display:block;
      position:relative;
      transition:transform var(--transition), opacity var(--transition);
    }
    .menu-lines::before,.menu-lines::after{content:"";position:absolute;left:0}
    .menu-lines::before{top:-6px}
    .menu-lines::after{top:6px}
    body.nav-open .menu-lines{background:transparent}
    body.nav-open .menu-lines::before{transform:translateY(6px) rotate(45deg)}
    body.nav-open .menu-lines::after{transform:translateY(-6px) rotate(-45deg)}
    .nav-backdrop{
      position:fixed;
      inset:0;
      background:rgba(4,3,9,.62);
      backdrop-filter:blur(8px);
      z-index:45;
      opacity:0;
      visibility:hidden;
      transition:opacity var(--transition), visibility var(--transition);
    }

    .article-kv{
      position:relative;
      padding:46px 0 30px;
      overflow:hidden;
    }
    .article-kv::before{
      content:"";
      position:absolute;
      inset:0 0 auto 0;
      height:360px;
      background:
        radial-gradient(circle at 70% 12%, rgba(126,248,220,.18), transparent 25%),
        radial-gradient(circle at 18% 24%, rgba(155,103,255,.24), transparent 30%),
        linear-gradient(180deg, rgba(27,19,45,.58), transparent);
      pointer-events:none;
    }
    .breadcrumb{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      color:var(--soft);
      font-size:13px;
      margin-bottom:18px;
    }
    .breadcrumb a{
      color:var(--muted);
      border-bottom:1px solid transparent;
    }
    .breadcrumb a:hover{color:var(--cyan);border-color:rgba(126,248,220,.45)}
    .breadcrumb .sep{opacity:.55}
    .article-hero-card{
      position:relative;
      z-index:1;
      border-radius:var(--radius-xl);
      border:1px solid rgba(126,248,220,.2);
      background:
        linear-gradient(135deg, rgba(21,16,35,.88), rgba(14,9,25,.72)),
        radial-gradient(circle at 88% 18%, rgba(126,248,220,.17), transparent 26%),
        radial-gradient(circle at 16% 8%, rgba(155,103,255,.22), transparent 32%);
      box-shadow:var(--shadow);
      overflow:hidden;
      padding:34px;
    }
    .article-hero-card::after{
      content:"";
      position:absolute;
      right:-80px;
      top:-80px;
      width:260px;
      height:260px;
      border-radius:999px;
      border:1px solid rgba(126,248,220,.24);
      box-shadow:inset 0 0 38px rgba(126,248,220,.16), 0 0 80px rgba(155,103,255,.12);
      background:conic-gradient(from 130deg, transparent, rgba(126,248,220,.16), transparent, rgba(155,103,255,.18), transparent);
      opacity:.85;
    }
    .hero-label{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--cyan);
      background:rgba(126,248,220,.08);
      border:1px solid rgba(126,248,220,.26);
      font-size:13px;
      font-weight:800;
      margin-bottom:16px;
    }
    .hero-label::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 16px rgba(126,248,220,.8);
    }
    h1{
      position:relative;
      z-index:1;
      margin:0;
      max-width:890px;
      font-size:clamp(31px, 4vw, 50px);
      line-height:1.15;
      letter-spacing:-.02em;
      font-weight:900;
      color:#fff;
      text-shadow:0 0 34px rgba(155,103,255,.22);
    }
    .hero-summary{
      position:relative;
      z-index:1;
      max-width:840px;
      margin:18px 0 0;
      color:var(--muted);
      font-size:16px;
    }
    .meta-strip{
      position:relative;
      z-index:1;
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:space-between;
      padding:12px;
      border-radius:20px;
      background:rgba(0,0,0,.2);
      border:1px solid rgba(255,255,255,.08);
    }
    .meta-list{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .meta-pill,.tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:34px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.1);
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .meta-pill strong{color:var(--text)}
    .tag{
      color:var(--amber);
      background:rgba(255,211,106,.08);
      border-color:rgba(255,211,106,.22);
    }
    .hero-actions{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:42px;
      padding:10px 16px;
      border-radius:15px;
      font-weight:900;
      letter-spacing:.01em;
      border:1px solid transparent;
      user-select:none;
    }
    .btn-primary{
      color:#071015;
      background:linear-gradient(135deg, var(--cyan), var(--green));
      box-shadow:0 12px 32px rgba(126,248,220,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 46px rgba(126,248,220,.3)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.045);
      border-color:rgba(255,255,255,.14);
    }
    .btn-secondary:hover{
      color:var(--cyan);
      border-color:rgba(126,248,220,.36);
      background:rgba(126,248,220,.07);
      transform:translateY(-2px);
    }
    .btn:active{transform:translateY(0) scale(.99)}

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 310px;
      gap:28px;
      align-items:start;
      padding:24px 0 82px;
    }
    .reading-panel{
      position:relative;
      border-radius:var(--radius-xl);
      border:1px solid rgba(255,255,255,.1);
      background:
        linear-gradient(180deg, rgba(21,16,35,.92), rgba(13,9,23,.88)),
        radial-gradient(circle at 8% 0%, rgba(155,103,255,.14), transparent 28%);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .reading-panel::before{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      border-radius:inherit;
      background:
        linear-gradient(90deg, rgba(126,248,220,.16), transparent 18%, transparent 78%, rgba(155,103,255,.12)),
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px);
      background-size:auto, 100% 38px;
      opacity:.45;
    }
    .article-toolbar{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:18px 22px;
      border-bottom:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.025);
    }
    .article-toolbar strong{
      display:block;
      color:#fff;
      font-size:15px;
    }
    .article-toolbar span{
      display:block;
      color:var(--soft);
      font-size:13px;
      margin-top:2px;
    }
    .copy-link{
      color:var(--cyan);
      background:rgba(126,248,220,.08);
      border:1px solid rgba(126,248,220,.22);
      border-radius:14px;
      padding:9px 12px;
      font-weight:800;
    }
    .copy-link:hover{
      background:rgba(126,248,220,.13);
      border-color:rgba(126,248,220,.42);
      transform:translateY(-1px);
    }
    .article-body{
      position:relative;
      z-index:1;
      max-width:840px;
      padding:30px 34px 38px;
      color:#e7def7;
      font-size:16px;
    }
    .article-body h2{
      margin:38px 0 14px;
      color:#fff;
      font-size:28px;
      line-height:1.35;
      letter-spacing:-.01em;
    }
    .article-body h3{
      margin:30px 0 12px;
      color:#fff;
      font-size:22px;
      line-height:1.4;
    }
    .article-body h4{
      margin:24px 0 10px;
      color:#fff;
      font-size:18px;
    }
    .article-body p{margin:0 0 17px}
    .article-body a{
      color:var(--cyan);
      border-bottom:1px solid rgba(126,248,220,.35);
    }
    .article-body a:hover{
      color:#fff;
      text-shadow:0 0 16px rgba(126,248,220,.4);
      border-color:rgba(126,248,220,.8);
    }
    .article-body ul,.article-body ol{
      margin:0 0 20px;
      padding-left:1.35em;
    }
    .article-body li{margin:7px 0}
    .article-body blockquote{
      margin:24px 0;
      padding:18px 20px;
      border-left:4px solid var(--cyan);
      border-radius:0 18px 18px 0;
      background:linear-gradient(90deg, rgba(126,248,220,.12), rgba(126,248,220,.03));
      color:#f2fcff;
    }
    .article-body img{
      margin:26px auto 10px;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 18px 48px rgba(0,0,0,.28);
    }
    .article-body figure{margin:28px 0}
    .article-body figcaption{
      color:var(--soft);
      text-align:center;
      font-size:13px;
      margin-top:8px;
    }
    .article-body table{
      width:100%;
      border-collapse:collapse;
      margin:24px 0;
      overflow:hidden;
      border-radius:16px;
      display:block;
      max-width:100%;
      overflow-x:auto;
      border:1px solid rgba(255,255,255,.1);
    }
    .article-body th,.article-body td{
      padding:12px 14px;
      border-bottom:1px solid rgba(255,255,255,.08);
      white-space:nowrap;
    }
    .article-body th{
      color:#fff;
      background:rgba(126,248,220,.08);
    }
    .article-body td{color:var(--muted)}
    .article-body code{
      color:var(--amber);
      background:rgba(255,211,106,.1);
      border:1px solid rgba(255,211,106,.18);
      padding:.12em .38em;
      border-radius:7px;
    }
    .article-body pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#0b0813;
      border:1px solid rgba(255,255,255,.1);
    }
    .article-body pre code{background:transparent;border:0;padding:0}
    .empty-article{
      display:grid;
      place-items:center;
      min-height:320px;
      text-align:center;
      padding:44px 22px;
    }
    .empty-icon{
      width:76px;
      height:76px;
      margin:0 auto 18px;
      border-radius:26px;
      border:1px solid rgba(126,248,220,.25);
      background:
        radial-gradient(circle at 30% 25%, rgba(126,248,220,.34), transparent 28%),
        linear-gradient(135deg, rgba(155,103,255,.22), rgba(255,255,255,.04));
      box-shadow:0 0 34px rgba(126,248,220,.16);
    }
    .empty-article h2{
      margin:0 0 10px;
      color:#fff;
      font-size:28px;
    }
    .empty-article p{
      margin:0 0 20px;
      color:var(--muted);
    }

    .side-panel{
      position:sticky;
      top:24px;
      display:grid;
      gap:16px;
    }
    .info-card,.related-card,.faq-card,.cta-panel{
      border-radius:var(--radius-lg);
      border:1px solid rgba(255,255,255,.1);
      background:linear-gradient(180deg, rgba(27,19,45,.78), rgba(15,10,27,.84));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .info-card{
      padding:20px;
      background:
        radial-gradient(circle at 86% 0%, rgba(126,248,220,.15), transparent 26%),
        linear-gradient(180deg, rgba(27,19,45,.82), rgba(15,10,27,.88));
    }
    .card-kicker{
      display:inline-flex;
      padding:6px 10px;
      border-radius:999px;
      color:var(--cyan);
      background:rgba(126,248,220,.08);
      border:1px solid rgba(126,248,220,.2);
      font-size:12px;
      font-weight:900;
      margin-bottom:12px;
    }
    .info-card h2,.related-card h2,.faq-section h2,.cta-panel h2{
      margin:0 0 10px;
      color:#fff;
      font-size:22px;
      line-height:1.35;
    }
    .info-card p,.cta-panel p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:16px 0 0;
      display:grid;
      gap:10px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      color:var(--muted);
      font-size:14px;
    }
    .check-list li::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:999px;
      margin-top:9px;
      flex:0 0 auto;
      background:var(--green);
      box-shadow:0 0 14px rgba(157,255,143,.5);
    }
    .mini-timeline{
      margin-top:16px;
      display:grid;
      gap:12px;
    }
    .timeline-item{
      position:relative;
      padding:12px 12px 12px 15px;
      border-radius:16px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
    }
    .timeline-item::before{
      content:"";
      position:absolute;
      left:0;
      top:14px;
      bottom:14px;
      width:3px;
      border-radius:999px;
      background:linear-gradient(var(--cyan), var(--purple));
    }
    .timeline-item strong{
      display:block;
      color:#fff;
      font-size:14px;
    }
    .timeline-item span{
      display:block;
      color:var(--soft);
      font-size:12px;
      margin-top:2px;
    }

    .below-content{
      display:grid;
      gap:22px;
      margin-top:28px;
    }
    .related-card{padding:24px}
    .related-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      margin-top:16px;
    }
    .related-item{
      display:block;
      padding:17px;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.1);
    }
    .related-item:hover{
      transform:translateY(-3px);
      border-color:rgba(126,248,220,.36);
      background:rgba(126,248,220,.065);
      box-shadow:0 16px 34px rgba(0,0,0,.2);
    }
    .related-item .tag{margin-bottom:10px}
    .related-item h3{
      margin:0 0 8px;
      color:#fff;
      font-size:18px;
      line-height:1.45;
    }
    .related-item p{
      margin:0 0 12px;
      color:var(--muted);
      font-size:14px;
    }
    .related-item .go{
      color:var(--cyan);
      font-weight:900;
      font-size:14px;
    }
    .related-item:hover .go{letter-spacing:.04em}

    .faq-section{
      padding:0 0 86px;
    }
    .section-head{
      margin-bottom:20px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }
    .section-head p{
      margin:0;
      max-width:620px;
      color:var(--muted);
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-card{
      padding:0;
      transition:border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    .faq-card:hover{border-color:rgba(126,248,220,.25)}
    .faq-question{
      width:100%;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      color:#fff;
      background:transparent;
      text-align:left;
      font-weight:900;
    }
    .faq-question span:last-child{
      width:28px;
      height:28px;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:var(--cyan);
      background:rgba(126,248,220,.08);
      border:1px solid rgba(126,248,220,.16);
      transition:transform var(--transition);
      flex:0 0 auto;
    }
    .faq-answer{
      display:none;
      padding:0 20px 18px;
      color:var(--muted);
      font-size:15px;
    }
    .faq-card.open{
      border-color:rgba(126,248,220,.36);
      box-shadow:0 18px 38px rgba(0,0,0,.22);
    }
    .faq-card.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-card.open .faq-answer{display:block}

    .cta-band{
      padding:0 0 86px;
    }
    .cta-panel{
      position:relative;
      padding:30px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:22px;
      align-items:center;
      border-color:rgba(126,248,220,.23);
      background:
        radial-gradient(circle at 82% 20%, rgba(126,248,220,.17), transparent 30%),
        radial-gradient(circle at 14% 0%, rgba(155,103,255,.18), transparent 30%),
        linear-gradient(135deg, rgba(27,19,45,.9), rgba(10,7,18,.88));
    }
    .cta-panel::before{
      content:"";
      position:absolute;
      inset:12px;
      border-radius:22px;
      border:1px dashed rgba(126,248,220,.18);
      pointer-events:none;
    }
    .cta-panel > *{position:relative;z-index:1}
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .site-footer{
      margin-left:var(--sidebar);
      padding:44px 0 28px;
      border-top:1px solid rgba(255,255,255,.08);
      background:
        radial-gradient(circle at 15% 0%, rgba(155,103,255,.1), transparent 26%),
        linear-gradient(180deg, rgba(10,7,18,.72), rgba(6,4,11,.96));
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:900;
      margin-bottom:12px;
    }
    .footer-brand .brand-mark{width:36px;height:36px;border-radius:14px}
    .footer-text{
      margin:0;
      max-width:660px;
      color:var(--muted);
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      padding:9px 12px;
      border-radius:13px;
      color:var(--muted);
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      font-weight:800;
      font-size:14px;
    }
    .footer-links a:hover{
      color:var(--cyan);
      border-color:rgba(126,248,220,.28);
      background:rgba(126,248,220,.06);
    }
    .copyright{
      margin-top:26px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      color:var(--soft);
      font-size:13px;
    }

    @media (max-width:1200px){
      :root{--sidebar:212px;--container:960px}
      .article-layout{grid-template-columns:minmax(0, 1fr) 285px;gap:20px}
      .article-hero-card{padding:30px}
    }
    @media (max-width:992px){
      .mobile-topbar{display:flex}
      .page-main,.site-footer{margin-left:0}
      .side-nav{
        transform:translateX(-105%);
        transition:transform var(--transition);
        width:min(86vw, 310px);
      }
      body.nav-open .side-nav{transform:translateX(0)}
      body.nav-open .nav-backdrop{opacity:1;visibility:visible}
      .article-kv{padding-top:30px}
      .article-layout{grid-template-columns:1fr}
      .side-panel{position:static;grid-template-columns:1fr 1fr}
      .container{width:min(100% - 36px, var(--container))}
    }
    @media (max-width:768px){
      .article-hero-card{padding:24px;border-radius:24px}
      .meta-strip{align-items:stretch}
      .hero-actions{width:100%}
      .hero-actions .btn{flex:1 1 160px}
      .article-body{padding:24px 22px 30px;font-size:15px}
      .article-body h2{font-size:24px}
      .article-body h3{font-size:20px}
      .article-toolbar{padding:16px}
      .side-panel{grid-template-columns:1fr}
      .related-grid{grid-template-columns:1fr}
      .section-head{display:block}
      .cta-panel{grid-template-columns:1fr;padding:24px}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:520px){
      .container{width:calc(100% - 32px)}
      .mobile-logo span{font-size:14px;max-width:210px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .article-kv{padding:22px 0 20px}
      .article-hero-card{padding:20px}
      .hero-summary{font-size:15px}
      .meta-list{width:100%}
      .meta-pill,.tag{width:100%;justify-content:center}
      .hero-actions .btn{width:100%}
      .article-layout{padding-bottom:58px}
      .article-body{padding:22px 18px 26px}
      .article-body h2{margin-top:30px}
      .article-toolbar{display:block}
      .copy-link{margin-top:12px;width:100%}
      .faq-question{padding:16px}
      .faq-answer{padding:0 16px 16px}
      .copyright{display:grid}
    }