:root{
      --bg:#f7f8fb;
      --card:#ffffff;
      --text:#16181d;
      --muted:#5a6272;
      --line:rgba(18, 22, 33, .10);
      --shadow:0 10px 30px rgba(18, 22, 33, .08);
      --accent:#0b6bff;
      --accent2:#00b3a6;
      --chip:#eef3ff;
      --radius:18px;
      --radius2:12px;
      --max:1100px;
      --container-pad:18px;
    }

    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 600px at 15% 0%, rgba(11,107,255,.12), transparent 60%),
        radial-gradient(900px 420px at 90% 10%, rgba(0,179,166,.10), transparent 55%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 55%, #ffffff 100%);
      overflow-x:hidden;
    }

    a{color:inherit}
    .container{
      width:100%;
      max-width:var(--max);
      margin:0 auto;
      padding:0 var(--container-pad);
    }

    .skip{
      position:absolute;
      left:-9999px;
      top:auto;
      width:1px;
      height:1px;
      overflow:hidden;
    }
    .skip:focus{
      left:14px; top:14px;
      width:auto; height:auto;
      padding:10px 12px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:12px;
      z-index:9999;
      box-shadow:var(--shadow);
    }

    header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter: blur(10px);
      background: rgba(255,255,255,.72);
      border-bottom:1px solid rgba(18,22,33,.08);
    }

    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:14px 0;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:140px;
    }

    .logo{
      width:36px; height:36px;
      border-radius:12px;
      background: linear-gradient(135deg, rgba(11,107,255,.15), rgba(0,179,166,.18));
      border:1px solid rgba(18,22,33,.10);
      display:grid;
      place-items:center;
      font-weight:900;
      letter-spacing:.5px;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      line-height:1.05;
    }
    .brand-name strong{
      font-size:14px;
      letter-spacing:.2px;
    }
    .brand-name span{
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
    }

    .nav-right{
      display:flex;
      align-items:center;
      gap:10px;
    }

    .menu{
      display:flex;
      align-items:center;
      gap:14px;
    }
    .menu a{
      text-decoration:none;
      font-size:14px;
      color:rgba(22,24,29,.88);
      padding:8px 10px;
      border-radius:12px;
      border:1px solid transparent;
      transition: background .2s ease, border-color .2s ease, transform .2s ease;
      white-space:nowrap;
    }
    .menu a:hover{
      background:rgba(11,107,255,.06);
      border-color:rgba(11,107,255,.18);
      transform: translateY(-1px);
    }

    .cta{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      border:none;
      cursor:pointer;
      border-radius:14px;
      padding:10px 14px;
      font-weight:700;
      font-size:14px;
      transition: transform .15s ease, box-shadow .15s ease, background .2s ease, border-color .2s ease;
      display:inline-flex;
      align-items:center;
      gap:10px;
      text-decoration:none;
      user-select:none;
    }
    .btn:active{transform: translateY(1px)}
    .btn-primary{
      background: linear-gradient(135deg, var(--accent), #2a86ff);
      color:#fff;
      box-shadow:0 14px 26px rgba(11,107,255,.18);
    }
    .btn-primary:hover{
      box-shadow:0 18px 36px rgba(11,107,255,.22);
    }
    .btn-ghost{
      background:rgba(255,255,255,.7);
      border:1px solid rgba(18,22,33,.12);
      color:rgba(22,24,29,.92);
    }
    .btn-ghost:hover{
      background: rgba(255,255,255,.95);
      border-color: rgba(11,107,255,.25);
      box-shadow:0 12px 22px rgba(18,22,33,.08);
    }

    .hamburger{
      display:none;
      width:44px; height:44px;
      border-radius:14px;
      border:1px solid rgba(18,22,33,.12);
      background: rgba(255,255,255,.75);
      cursor:pointer;
      align-items:center;
      justify-content:center;
      transition: transform .15s ease, background .2s ease;
    }
    .hamburger:active{transform: translateY(1px)}
    .hamburger svg{opacity:.9}

    .mobile-panel{
      display:none;
      padding:0 0 14px;
    }
    .mobile-links{
      display:flex;
      flex-direction:column;
      gap:8px;
      padding:10px 0 6px;
    }
    .mobile-links a{
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.72);
      font-weight:650;
      color:rgba(22,24,29,.92);
    }

    @media (max-width: 900px){
      .menu{display:none}
      .hamburger{display:flex}
      .mobile-panel{display:block}
    }

    main{padding:26px 0 10px}

    .hero{
      margin-top:18px;
      position:relative;
      overflow:hidden;
      border-radius: calc(var(--radius) + 6px);
      border:1px solid rgba(18,22,33,.10);
      background:
        radial-gradient(900px 420px at 20% 0%, rgba(11,107,255,.18), transparent 60%),
        radial-gradient(650px 340px at 95% 20%, rgba(0,179,166,.14), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,.85) 0%, rgba(255,255,255,.55) 100%);
      box-shadow: var(--shadow);
    }

    .hero-inner{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:18px;
      padding:22px;
      align-items:start;
    }

    .badge-row{
      display:flex; flex-wrap:wrap;
      gap:10px;
      margin-bottom:14px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      background: rgba(238,243,255,.9);
      border:1px solid rgba(11,107,255,.18);
      border-radius:999px;
      font-size:13px;
      color:rgba(11,32,72,.95);
      font-weight:650;
    }
    .chip i{
      width:10px; height:10px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      display:inline-block;
      box-shadow:0 10px 18px rgba(11,107,255,.18);
    }

    .hero h1{
      margin:0 0 10px;
      font-size:30px;
      letter-spacing:-.5px;
      line-height:1.15;
    }

    .lead{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.75;
      max-width:64ch;
    }

    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:16px;
      align-items:center;
    }

    .quick{
      display:grid;
      grid-template-columns:1fr;
      gap:12px;
    }

    .glass-card{
      background: rgba(255,255,255,.7);
      border:1px solid rgba(18,22,33,.10);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 16px 40px rgba(18,22,33,.07);
      position:relative;
      overflow:hidden;
    }
    .glass-card:before{
      content:"";
      position:absolute;
      inset:-2px -2px auto -2px;
      height:120px;
      background: linear-gradient(90deg, rgba(11,107,255,.16), rgba(0,179,166,.12), transparent);
      filter: blur(0px);
      pointer-events:none;
    }

    .kpi-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:10px;
      margin-top:10px;
      position:relative;
      z-index:1;
    }
    .kpi{
      border-radius:14px;
      background: rgba(255,255,255,.8);
      border:1px solid rgba(18,22,33,.09);
      padding:10px 10px;
      min-height:62px;
      transition: transform .18s ease, box-shadow .18s ease, border-color .2s ease;
    }
    .kpi:hover{
      transform: translateY(-2px);
      box-shadow: 0 14px 30px rgba(18,22,33,.10);
      border-color: rgba(11,107,255,.20);
    }
    .kpi strong{
      display:block;
      font-size:14px;
      letter-spacing:.1px;
    }
    .kpi span{
      display:block;
      color:var(--muted);
      font-size:12px;
      margin-top:4px;
      line-height:1.4;
    }

    .toc{
      margin-top:14px;
      padding:12px 12px;
      background: rgba(255,255,255,.72);
      border:1px solid rgba(18,22,33,.10);
      border-radius: var(--radius);
      position:relative;
      z-index:1;
    }
    .toc-title{
      font-weight:850;
      font-size:14px;
      margin:0 0 10px;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .toc-title:before{
      content:"";
      width:10px; height:10px;
      border-radius:3px;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      box-shadow:0 12px 20px rgba(11,107,255,.16);
      display:inline-block;
    }
    .toc a{
      display:flex;
      align-items:flex-start;
      gap:10px;
      text-decoration:none;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(18,22,33,.08);
      background: rgba(255,255,255,.8);
      margin-top:10px;
      transition: transform .18s ease, border-color .2s ease, background .2s ease;
    }
    .toc a:first-of-type{margin-top:0}
    .toc a:hover{
      transform: translateY(-2px);
      background: rgba(255,255,255,.98);
      border-color: rgba(11,107,255,.20);
    }
    .toc .dot{
      width:22px; height:22px;
      border-radius:9px;
      background: rgba(11,107,255,.09);
      border:1px solid rgba(11,107,255,.18);
      display:grid;
      place-items:center;
      font-size:12px;
      font-weight:850;
      color: rgba(11,32,72,.95);
      flex:0 0 auto;
      margin-top:1px;
    }
    .toc a strong{
      font-size:14px;
      line-height:1.3;
    }
    .toc a span{
      display:block;
      color:var(--muted);
      font-size:12px;
      margin-top:4px;
      line-height:1.45;
    }

    @media (max-width: 900px){
      .hero-inner{grid-template-columns:1fr; padding:16px}
      .hero h1{font-size:26px}
    }

    .section{
      margin-top:18px;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:14px;
      margin-bottom:12px;
    }
    .section-head h2{
      margin:0;
      font-size:18px;
      letter-spacing:-.2px;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.5;
      max-width:60ch;
    }

    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:12px;
    }
    @media (max-width: 980px){
      .grid-3{grid-template-columns:1fr}
    }

    .card{
      background: var(--card);
      border:1px solid rgba(18,22,33,.10);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 12px 26px rgba(18,22,33,.06);
      position:relative;
      overflow:hidden;
      transform: translateZ(0);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover{
      transform: translateY(-3px);
      border-color: rgba(11,107,255,.22);
      box-shadow: 0 18px 44px rgba(18,22,33,.10);
    }

    .card .icon{
      width:38px; height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background: rgba(11,107,255,.08);
      border:1px solid rgba(11,107,255,.18);
      margin-bottom:10px;
    }
    .card h3{
      margin:0 0 6px;
      font-size:15px;
      letter-spacing:-.1px;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }

    .two-col{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
    }
    @media (max-width: 980px){
      .two-col{grid-template-columns:1fr}
    }

    .steps{
      padding:0;
      margin:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .step{
      display:flex;
      gap:12px;
      padding:12px;
      border-radius: var(--radius);
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.75);
      transition: border-color .2s ease, transform .2s ease;
    }
    .step:hover{
      border-color: rgba(11,107,255,.22);
      transform: translateY(-2px);
    }
    .step .num{
      width:34px; height:34px;
      border-radius:14px;
      background: linear-gradient(135deg, rgba(11,107,255,.12), rgba(0,179,166,.10));
      border:1px solid rgba(18,22,33,.10);
      display:grid;
      place-items:center;
      font-weight:900;
      color: rgba(22,24,29,.92);
      flex:0 0 auto;
    }
    .step strong{
      display:block;
      font-size:14px;
      margin-top:2px;
    }
    .step span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
      margin-top:6px;
    }

    .compare{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }
    .compare-row{
      display:flex;
      gap:12px;
      align-items:stretch;
      flex-wrap:wrap;
    }
    .pill{
      flex:1 1 240px;
      border-radius: var(--radius);
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.78);
      padding:14px;
      min-width:240px;
    }
    .pill h3{
      margin:0 0 8px;
      font-size:15px;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .pill h3 i{
      width:12px; height:12px; border-radius:4px;
      background: var(--accent);
      display:inline-block;
      box-shadow:0 10px 20px rgba(11,107,255,.18);
    }
    .pill.alt h3 i{background: var(--accent2)}
    .pill ul{
      margin:0;
      padding-left:18px;
      color:var(--muted);
      font-size:13px;
      line-height:1.8;
    }
    .pill li{margin:4px 0}

    .faq{
      border-radius: var(--radius);
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.74);
      overflow:hidden;
      box-shadow: 0 12px 26px rgba(18,22,33,.06);
    }
    details.faq-item{
      border-top:1px solid rgba(18,22,33,.08);
      padding:0;
    }
    details.faq-item:first-child{border-top:none}
    details.faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:14px 14px;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      user-select:none;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    .q{
      font-weight:850;
      font-size:14px;
      letter-spacing:-.1px;
      line-height:1.4;
    }
    .chev{
      width:28px; height:28px;
      border-radius:12px;
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.85);
      display:grid;
      place-items:center;
      flex:0 0 auto;
      transition: transform .2s ease, border-color .2s ease;
      margin-top:1px;
    }
    details[open] .chev{
      transform: rotate(180deg);
      border-color: rgba(11,107,255,.22);
    }
    .a{
      padding:0 14px 14px;
      color:var(--muted);
      font-size:13px;
      line-height:1.75;
    }
    .a b{color:rgba(22,24,29,.92)}

    .cta-strip{
      margin-top:14px;
      border-radius: calc(var(--radius) + 6px);
      border:1px solid rgba(18,22,33,.10);
      background:
        radial-gradient(900px 240px at 20% 0%, rgba(11,107,255,.22), transparent 65%),
        linear-gradient(180deg, rgba(255,255,255,.88) 0%, rgba(255,255,255,.62) 100%);
      box-shadow: var(--shadow);
      overflow:hidden;
    }
    .cta-strip-inner{
      padding:16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .cta-strip h2{
      margin:0;
      font-size:17px;
      letter-spacing:-.2px;
    }
    .cta-strip p{
      margin:6px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
      max-width:70ch;
    }

    .link-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:flex-start;
      margin-top:10px;
    }
    .taglink{
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.78);
      color: rgba(22,24,29,.92);
      font-weight:750;
      font-size:13px;
      transition: transform .18s ease, border-color .2s ease, background .2s ease;
    }
    .taglink:hover{
      transform: translateY(-2px);
      border-color: rgba(11,107,255,.22);
      background: rgba(255,255,255,.98);
    }

    .image-strip{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:12px;
      align-items:start;
      margin-top:12px;
    }
    @media (max-width: 980px){
      .image-strip{grid-template-columns:1fr}
    }

    .img-card{
      border-radius: var(--radius);
      border:1px solid rgba(18,22,33,.10);
      background: rgba(255,255,255,.78);
      padding:12px;
      box-shadow: 0 12px 26px rgba(18,22,33,.06);
    }
    .img-wrap{
      border-radius: 14px;
      border:1px solid rgba(18,22,33,.10);
      overflow:hidden;
      background: linear-gradient(180deg, rgba(11,107,255,.06), rgba(0,179,166,.05));
    }
    .img-wrap img{
      width:100%;
      max-width:100%;
      height:auto;
      display:block;
      object-fit:contain;
    }

    .img-meta{
      padding:10px 4px 0;
    }
    .img-meta strong{
      display:block;
      font-size:14px;
    }
    .img-meta span{
      display:block;
      color:var(--muted);
      font-size:12.5px;
      line-height:1.6;
      margin-top:6px;
    }

    footer{
      margin-top:14px;
      background: #0f172a;
      color:#e7edf9;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-inner{
      padding:18px 0;
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:14px;
      align-items:start;
    }
    @media (max-width: 980px){
      .footer-inner{grid-template-columns:1fr}
    }
    .foot-title{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:8px;
    }
    .foot-logo{
      width:36px; height:36px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background: rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.16);
      font-weight:900;
    }
    .foot-title strong{font-size:15px}
    .foot-title span{display:block; color:rgba(231,237,249,.75); font-size:12.5px; margin-top:3px}
    .foot-text{
      margin:0;
      color:rgba(231,237,249,.78);
      font-size:13px;
      line-height:1.7;
      max-width:62ch;
    }
    .foot-right{
      border-radius: var(--radius);
      border:1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.06);
      padding:12px;
    }
    .foot-right h3{
      margin:0 0 10px;
      font-size:14px;
      letter-spacing:-.1px;
    }
    .foot-right a{
      display:block;
      text-decoration:none;
      color:#e7edf9;
      font-weight:750;
      font-size:13px;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.06);
      margin-top:10px;
      transition: transform .18s ease, border-color .2s ease, background .2s ease;
    }
    .foot-right a:first-of-type{margin-top:0}
    .foot-right a:hover{
      transform: translateY(-2px);
      border-color: rgba(11,107,255,.45);
      background: rgba(255,255,255,.10);
    }
    .copyright{
      border-top:1px solid rgba(255,255,255,.10);
      padding:12px 0 16px;
      color:rgba(231,237,249,.72);
      font-size:12.5px;
    }

    .backtop{
      position:fixed;
      right:16px;
      bottom:16px;
      z-index:60;
      opacity:0;
      pointer-events:none;
      transform: translateY(10px);
      transition: opacity .2s ease, transform .2s ease;
    }
    .backtop.show{
      opacity:1;
      pointer-events:auto;
      transform: translateY(0);
    }
    .backtop button{
      width:46px; height:46px;
      border-radius:16px;
      border:1px solid rgba(18,22,33,.12);
      background: rgba(255,255,255,.88);
      box-shadow: 0 18px 40px rgba(18,22,33,.12);
      cursor:pointer;
      display:grid;
      place-items:center;
      transition: transform .15s ease, border-color .2s ease;
    }
    .backtop button:active{transform: translateY(1px)}
    .backtop button:hover{border-color: rgba(11,107,255,.22)}
    .backtop svg{opacity:.9}