:root{
      --bg0:#f7f7fb;
      --bg1:#ffffff;
      --ink:#1f2430;
      --muted:#5b6577;
      --subtle:#7a869c;
      --line:rgba(20,30,45,.12);
      --shadow: 0 14px 36px rgba(16,24,40,.10);
      --shadow2: 0 10px 24px rgba(16,24,40,.10);
      --radius:18px;
      --radius2:24px;
      --brand1:#6d5cff;
      --brand2:#00c2ff;
      --brand3:#ff4fd8;
      --brand4:#35d07f;
      --btn:#1f6fff;
      --btn2:#0ea5e9;
      --card:#ffffff;
      --focus: rgba(109,92,255,.22);
      --max:1120px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color:var(--ink);
      background:
        radial-gradient(1000px 700px at 18% 10%, rgba(109,92,255,.12), transparent 55%),
        radial-gradient(900px 640px at 78% 12%, rgba(0,194,255,.10), transparent 52%),
        radial-gradient(800px 620px at 62% 78%, rgba(255,79,216,.08), transparent 55%),
        linear-gradient(180deg, var(--bg0), #ffffff 55%, #ffffff);
      overflow-x:hidden;
    }
    a{color:inherit; text-decoration:none}
    .container{
      max-width:var(--max);
      margin:0 auto;
      padding:0 20px;
    }
    header{
      position:sticky;
      top:0;
      z-index:50;
      background: rgba(247,247,251,.70);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(20,30,45,.08);
    }
    .nav-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:14px 0;
    }
    .brand{
      display:flex; align-items:center; gap:12px; min-width: 190px;
    }
    .ai-page-logo{
      width:42px; height:42px; object-fit:contain; border-radius:12px;
      background: linear-gradient(135deg, rgba(109,92,255,.15), rgba(0,194,255,.10));
      padding:6px;
      border:1px solid rgba(20,30,45,.08);
    }
    .brand-title{
      display:flex; flex-direction:column; line-height:1.1;
    }
    .brand-title strong{font-size:15px; letter-spacing:.2px}
    .brand-title span{font-size:12px; color:var(--muted)}
    nav{display:flex; align-items:center; gap:14px}
    .menu{
      display:flex; align-items:center; gap:14px;
      flex-wrap:wrap;
      justify-content:flex-end;
      max-width: 640px;
    }
    .menu a{
      font-size:13px;
      color: rgba(31,36,48,.92);
      padding:8px 10px;
      border-radius:999px;
      border:1px solid transparent;
      transition: transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .menu a:hover{
      background: rgba(109,92,255,.08);
      border-color: rgba(109,92,255,.20);
      transform: translateY(-1px);
    }
    .nav-actions{
      display:flex; align-items:center; gap:10px;
      min-width: 160px;
      justify-content:flex-end;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border:none;
      border-radius:12px;
      padding:11px 14px;
      font-weight:700;
      cursor:pointer;
      transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
      will-change:transform;
      user-select:none;
    }
    .btn:active{transform: translateY(1px)}
    .btn-primary{
      background: linear-gradient(135deg, var(--brand1), var(--btn2));
      color:#fff;
      box-shadow: 0 12px 30px rgba(109,92,255,.22);
    }
    .btn-primary:hover{box-shadow: 0 14px 34px rgba(109,92,255,.28); transform: translateY(-1px)}
    .btn-ghost{
      background: rgba(255,255,255,.65);
      border:1px solid rgba(20,30,45,.12);
      color: rgba(31,36,48,.92);
    }
    .btn-ghost:hover{background: rgba(255,255,255,.95); transform: translateY(-1px)}
    .icon-dot{
      width:10px; height:10px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, #fff, rgba(255,255,255,.0) 45%), linear-gradient(135deg, var(--brand3), var(--brand2));
      box-shadow: 0 0 0 3px rgba(255,79,216,.15);
    }
    .mobile-toggle{
      display:none;
      border-radius:12px;
      padding:10px 12px;
      border:1px solid rgba(20,30,45,.12);
      background: rgba(255,255,255,.65);
      cursor:pointer;
      transition: background .15s ease, transform .15s ease;
    }
    .mobile-toggle:hover{background: rgba(255,255,255,.95); transform: translateY(-1px)}
    .burger{
      width:18px; height:12px; position:relative;
    }
    .burger span{
      position:absolute; left:0; right:0; height:2px; border-radius:2px;
      background: rgba(31,36,48,.86);
      transition: transform .18s ease, top .18s ease, opacity .18s ease;
    }
    .burger span:nth-child(1){top:0}
    .burger span:nth-child(2){top:5px}
    .burger span:nth-child(3){top:10px}
    .mobile-toggle[aria-expanded="true"] .burger span:nth-child(1){top:5px; transform: rotate(45deg)}
    .mobile-toggle[aria-expanded="true"] .burger span:nth-child(2){opacity:0}
    .mobile-toggle[aria-expanded="true"] .burger span:nth-child(3){top:5px; transform: rotate(-45deg)}
    .mobile-panel{
      display:none;
      padding:10px 0 16px;
    }
    .mobile-panel .menu{
      max-width:none;
      justify-content:flex-start;
      gap:10px;
    }
    .hero{
      padding:34px 0 14px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:18px;
      align-items:stretch;
    }
    .hero-card{
      position:relative;
      border-radius: var(--radius2);
      background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.56));
      border: 1px solid rgba(20,30,45,.10);
      box-shadow: var(--shadow);
      padding:22px;
      overflow:hidden;
    }
    .hero-card:before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(600px 280px at 15% 0%, rgba(109,92,255,.22), transparent 55%),
        radial-gradient(520px 260px at 80% 20%, rgba(0,194,255,.18), transparent 58%),
        radial-gradient(520px 260px at 55% 90%, rgba(255,79,216,.12), transparent 60%);
      pointer-events:none;
      filter:saturate(1.05);
    }
    .hero-inner{position:relative; z-index:1; display:flex; flex-direction:column; gap:14px}
    .badge-row{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
    .badge{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 10px;
      border-radius:999px;
      background: rgba(255,255,255,.72);
      border: 1px solid rgba(20,30,45,.10);
      color: rgba(31,36,48,.92);
      font-size:12.5px;
      white-space:nowrap;
    }
    .badge i{
      width:10px; height:10px; border-radius:50%;
      background: linear-gradient(135deg, var(--brand1), var(--brand3));
      box-shadow: 0 0 0 3px rgba(109,92,255,.14);
      display:inline-block;
    }
    .hero h1{
      margin:0;
      font-size:34px;
      line-height:1.15;
      letter-spacing:-.5px;
    }
    .lead{
      margin:0;
      color: var(--muted);
      font-size:15px;
      line-height:1.7;
      max-width: 62ch;
    }
    .hero-cta{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      align-items:center;
      margin-top:2px;
    }
    .quick-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:10px;
      margin-top:8px;
    }
    .mini-stat{
      border-radius:16px;
      padding:12px 12px;
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
      position:relative;
      overflow:hidden;
      min-height: 86px;
      display:flex; flex-direction:column; justify-content:space-between;
    }
    .mini-stat:after{
      content:"";
      position:absolute; inset:auto -30px -30px auto;
      width:90px; height:90px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.7), rgba(255,255,255,0) 55%), linear-gradient(135deg, rgba(109,92,255,.20), rgba(0,194,255,.12));
      transform: rotate(10deg);
      opacity:.9;
      pointer-events:none;
    }
    .mini-stat:hover{
      transform: translateY(-2px);
      box-shadow: 0 16px 34px rgba(16,24,40,.12);
      border-color: rgba(109,92,255,.22);
    }
    .mini-stat strong{
      font-size:18px;
      letter-spacing:-.2px;
      position:relative; z-index:1;
    }
    .mini-stat span{
      color: var(--subtle);
      font-size:12.8px;
      line-height:1.35;
      position:relative; z-index:1;
    }

    .side-panel{
      border-radius: var(--radius2);
      background: rgba(255,255,255,.72);
      border: 1px solid rgba(20,30,45,.10);
      box-shadow: var(--shadow2);
      padding:18px;
      overflow:hidden;
      position:relative;
    }
    .side-panel:before{
      content:"";
      position:absolute;
      inset:-2px;
      background:
        radial-gradient(460px 260px at 15% 20%, rgba(53,208,127,.16), transparent 55%),
        radial-gradient(420px 220px at 85% 0%, rgba(0,194,255,.16), transparent 60%),
        radial-gradient(420px 260px at 72% 90%, rgba(255,79,216,.10), transparent 58%);
      pointer-events:none;
    }
    .side-inner{position:relative; z-index:1; display:flex; flex-direction:column; gap:12px}
    .side-title{
      display:flex; align-items:center; justify-content:space-between; gap:12px;
    }
    .side-title h2{margin:0; font-size:16px}
    .pill{
      font-size:12px;
      color: rgba(31,36,48,.92);
      padding:7px 10px;
      border-radius:999px;
      background: rgba(255,255,255,.72);
      border:1px solid rgba(20,30,45,.10);
      white-space:nowrap;
    }
    .side-list{
      display:flex; flex-direction:column; gap:10px; margin-top:2px;
    }
    .list-item{
      display:flex; gap:10px; align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      background: rgba(255,255,255,.7);
      border:1px solid rgba(20,30,45,.10);
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }
    .list-item:hover{transform: translateY(-2px); border-color: rgba(0,194,255,.22); background: rgba(255,255,255,.9)}
    .li-ico{
      width:34px; height:34px; border-radius:12px;
      background: linear-gradient(135deg, rgba(109,92,255,.18), rgba(0,194,255,.14));
      border:1px solid rgba(109,92,255,.18);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
    }
    .li-ico svg{width:18px; height:18px}
    .list-item strong{font-size:13.5px}
    .list-item p{margin:4px 0 0; color: var(--muted); font-size:12.8px; line-height:1.5}

    .section{
      padding:26px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:14px;
      margin-bottom:14px;
    }
    .section-head h2{
      margin:0;
      font-size:22px;
      letter-spacing:-.3px;
    }
    .section-head p{
      margin:0;
      color: var(--muted);
      font-size:13.5px;
      line-height:1.6;
      max-width: 62ch;
    }
    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:12px;
    }
    .card{
      background: rgba(255,255,255,.76);
      border:1px solid rgba(20,30,45,.10);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 10px 26px rgba(16,24,40,.06);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
      position:relative;
      overflow:hidden;
    }
    .card:hover{
      transform: translateY(-3px);
      box-shadow: 0 18px 40px rgba(16,24,40,.10);
      border-color: rgba(109,92,255,.20);
    }
    .card h3{margin:10px 0 6px; font-size:15px; letter-spacing:-.1px}
    .card p{margin:0; color: var(--muted); font-size:13px; line-height:1.7}
    .card .tagrow{margin-top:10px; display:flex; flex-wrap:wrap; gap:8px}
    .tag{
      font-size:12px;
      padding:7px 9px;
      border-radius:999px;
      background: rgba(109,92,255,.08);
      border:1px solid rgba(109,92,255,.18);
      color: rgba(31,36,48,.92);
      white-space:nowrap;
    }
    .stepper{
      display:grid;
      grid-template-columns: repeat(4, minmax(0,1fr));
      gap:12px;
    }
    .step{
      padding:14px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      position:relative;
      overflow:hidden;
    }
    .step:before{
      content:"";
      position:absolute; top:-30px; right:-30px;
      width:120px; height:120px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.65), rgba(255,255,255,0) 55%),
        linear-gradient(135deg, rgba(0,194,255,.18), rgba(255,79,216,.10));
      transform: rotate(14deg);
      opacity:.95;
      pointer-events:none;
    }
    .step-top{position:relative; z-index:1; display:flex; align-items:center; justify-content:space-between; gap:10px}
    .step-num{
      display:inline-flex; align-items:center; justify-content:center;
      width:34px; height:34px; border-radius:12px;
      background: rgba(109,92,255,.12);
      border:1px solid rgba(109,92,255,.20);
      font-weight:900;
    }
    .step h3{margin:10px 0 6px; font-size:15px; position:relative; z-index:1}
    .step p{margin:0; color: var(--muted); font-size:13px; line-height:1.7; position:relative; z-index:1}
    .compare{
      overflow:auto;
      border-radius: var(--radius);
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.72);
      box-shadow: 0 10px 26px rgba(16,24,40,.06);
    }
    table{
      width:100%;
      border-collapse:collapse;
      min-width: 820px;
    }
    th, td{
      padding:12px 12px;
      border-bottom:1px solid rgba(20,30,45,.08);
      vertical-align:top;
      font-size:13px;
      line-height:1.6;
    }
    th{
      background: linear-gradient(135deg, rgba(109,92,255,.10), rgba(0,194,255,.08));
      position:sticky;
      top:0;
      z-index:2;
      text-align:left;
      font-size:13.5px;
      color: rgba(31,36,48,.95);
    }
    td:first-child{font-weight:700; color: rgba(31,36,48,.95)}
    .score{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:stretch;
    }
    .rating-card{
      padding:16px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: 0 10px 26px rgba(16,24,40,.06);
    }
    .rating-top{display:flex; align-items:center; justify-content:space-between; gap:12px}
    .stars{
      display:flex; gap:6px; align-items:center;
      color: #f5b301;
    }
    .star svg{width:18px; height:18px; fill:#f5b301}
    .rating-number strong{
      font-size:34px; letter-spacing:-.8px;
    }
    .rating-number span{display:block; color:var(--muted); font-size:13px; margin-top:4px}
    .meter-list{margin-top:12px; display:grid; gap:10px}
    .meter{
      border-radius:14px;
      background: rgba(109,92,255,.07);
      border:1px solid rgba(109,92,255,.14);
      padding:10px 12px;
    }
    .meter .toprow{display:flex; align-items:center; justify-content:space-between; gap:10px}
    .meter .toprow strong{font-size:13.5px}
    .meter .toprow span{font-size:12.5px; color:var(--muted)}
    .bar{
      height:10px; border-radius:999px;
      margin-top:8px;
      background: rgba(31,36,48,.08);
      overflow:hidden;
    }
    .bar i{
      display:block; height:100%;
      width: 88%;
      border-radius:999px;
      background: linear-gradient(90deg, var(--brand1), var(--brand2), var(--brand3));
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.25);
    }

    .side-by-side{
      display:grid;
      grid-template-columns: .95fr 1.05fr;
      gap:12px;
      align-items:stretch;
    }

    .faq{
      display:grid;
      gap:10px;
    }
    details{
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: 0 10px 26px rgba(16,24,40,.05);
      padding:0 14px;
      overflow:hidden;
      transition: border-color .15s ease, transform .15s ease;
    }
    details[open]{border-color: rgba(0,194,255,.22)}
    summary{
      list-style:none;
      padding:14px 0;
      cursor:pointer;
      display:flex; align-items:center; justify-content:space-between; gap:12px;
      font-weight:800;
      letter-spacing:-.1px;
      font-size:14px;
      outline:none;
    }
    summary::-webkit-details-marker{display:none}
    .sum-right{
      display:flex; align-items:center; gap:10px;
      color: var(--muted);
      font-weight:700;
      font-size:12.5px;
    }
    .chev{
      width:26px; height:26px; border-radius:10px;
      border:1px solid rgba(20,30,45,.12);
      background: rgba(255,255,255,.65);
      display:flex; align-items:center; justify-content:center;
      transition: transform .18s ease;
      flex:0 0 auto;
    }
    details[open] .chev{transform: rotate(180deg)}
    .faq-body{
      padding:0 0 14px;
      color: var(--muted);
      font-size:13.5px;
      line-height:1.8;
    }

    .reviews{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:12px;
    }
    .review{
      padding:14px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      transition: transform .18s ease, border-color .18s ease;
    }
    .review:hover{transform: translateY(-3px); border-color: rgba(255,79,216,.18)}
    .review-top{display:flex; gap:10px; align-items:flex-start}
    .avatar{
      width:40px; height:40px; border-radius:14px;
      background: linear-gradient(135deg, rgba(109,92,255,.18), rgba(0,194,255,.12));
      border:1px solid rgba(109,92,255,.18);
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      color: rgba(31,36,48,.92);
    }
    .review strong{display:block; font-size:14px}
    .review small{display:block; color:var(--muted); margin-top:3px; font-size:12.5px}
    .review p{margin:10px 0 0; color:var(--muted); font-size:13.2px; line-height:1.75}

    .tags-cloud{
      display:flex; flex-wrap:wrap; gap:10px;
      padding:14px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.72);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: 0 10px 26px rgba(16,24,40,.05);
    }
    .cloud-tag{
      padding:10px 12px;
      border-radius:999px;
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.65);
      font-size:13px;
      color: rgba(31,36,48,.92);
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }
    .cloud-tag:hover{
      transform: translateY(-2px);
      background: rgba(255,255,255,.95);
      border-color: rgba(109,92,255,.22);
    }

    .case-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:12px;
    }
    .case-card{
      padding:14px;
      border-radius: var(--radius);
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.74);
      transition: transform .18s ease, box-shadow .18s ease;
      overflow:hidden;
      position:relative;
    }
    .case-card:hover{transform: translateY(-3px); box-shadow: 0 18px 40px rgba(16,24,40,.10)}
    .case-card h3{margin:10px 0 6px; font-size:15px}
    .case-card p{margin:0; color:var(--muted); font-size:13px; line-height:1.7}
    .case-metas{
      margin-top:12px;
      display:flex; gap:8px; flex-wrap:wrap;
    }
    .meta-chip{
      font-size:12px; padding:7px 9px; border-radius:999px;
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.65);
      color: rgba(31,36,48,.92);
      white-space:nowrap;
    }

    .articles{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:stretch;
    }
    .article-card{
      padding:14px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: 0 10px 26px rgba(16,24,40,.05);
      transition: transform .18s ease, border-color .18s ease;
      display:flex; flex-direction:column; gap:10px;
    }
    .article-card:hover{transform: translateY(-3px); border-color: rgba(0,194,255,.22)}
    .article-top{
      display:flex; align-items:flex-start; justify-content:space-between; gap:10px;
    }
    .article-top strong{font-size:14.5px}
    .article-top span{
      font-size:12px; color:var(--muted);
      padding:7px 9px;
      border-radius:999px;
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.6);
      white-space:nowrap;
    }
    .article-card p{margin:0; color:var(--muted); font-size:13px; line-height:1.7}
    .article-actions{margin-top:auto; display:flex; justify-content:space-between; align-items:center; gap:10px}
    .link{
      display:inline-flex; align-items:center; gap:8px;
      color: rgba(31,36,48,.95);
      font-weight:800; font-size:13.5px;
      padding:10px 12px;
      border-radius:12px;
      border:1px solid rgba(20,30,45,.10);
      background: rgba(255,255,255,.65);
      transition: transform .18s ease, background .18s ease, border-color .18s ease;
      cursor:pointer;
    }
    .link:hover{transform: translateY(-2px); background: rgba(255,255,255,.95); border-color: rgba(109,92,255,.22)}
    .arrow{
      width:18px; height:18px; border-radius:9px;
      border:1px solid rgba(20,30,45,.10);
      display:flex; align-items:center; justify-content:center;
      background: rgba(109,92,255,.08);
    }
    .arrow svg{width:12px; height:12px}

    .form-wrap{
      padding:16px;
      border-radius: var(--radius2);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: var(--shadow2);
      overflow:hidden;
      position:relative;
    }
    .form-wrap:before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(520px 280px at 8% 10%, rgba(109,92,255,.18), transparent 58%),
        radial-gradient(520px 280px at 92% 20%, rgba(0,194,255,.14), transparent 58%),
        radial-gradient(520px 280px at 72% 92%, rgba(53,208,127,.12), transparent 60%);
      pointer-events:none;
    }
    .form-inner{position:relative; z-index:1}
    form{display:grid; gap:12px}
    .form-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:12px;
    }
    label{
      display:flex; flex-direction:column; gap:8px;
      font-size:12.8px;
      color: rgba(31,36,48,.92);
      font-weight:800;
    }
    input, select, textarea{
      width:100%;
      border-radius: 14px;
      border:1px solid rgba(20,30,45,.14);
      background: rgba(255,255,255,.85);
      padding:12px 12px;
      font-size:14px;
      color: rgba(31,36,48,.95);
      outline:none;
      transition: box-shadow .15s ease, border-color .15s ease, background .15s ease;
    }
    textarea{min-height:110px; resize: vertical}
    input:focus, select:focus, textarea:focus{
      border-color: rgba(109,92,255,.35);
      box-shadow: 0 0 0 4px var(--focus);
      background: #fff;
    }
    .form-actions{
      display:flex; gap:10px; align-items:center; justify-content:space-between; flex-wrap:wrap;
      margin-top:2px;
    }
    .hint{
      color: var(--muted);
      font-size:12.8px;
      line-height:1.6;
      max-width: 60ch;
    }
    .toast{
      position:fixed;
      left:50%;
      transform: translateX(-50%);
      bottom:22px;
      background: rgba(17,24,39,.92);
      color:#fff;
      padding:12px 14px;
      border-radius:14px;
      box-shadow: 0 18px 44px rgba(0,0,0,.25);
      z-index:80;
      width: min(560px, calc(100vw - 28px));
      display:none;
    }
    .toast.show{display:block; animation: pop .2s ease}
    @keyframes pop{from{opacity:0; transform: translateX(-50%) translateY(8px)} to{opacity:1; transform: translateX(-50%) translateY(0)}}
    .floating{
      position:fixed;
      right:14px;
      bottom:14px;
      z-index:70;
      display:flex;
      flex-direction:column;
      gap:10px;
      align-items:flex-end;
    }
    .float-btn{
      display:flex; align-items:center; gap:10px;
      padding:11px 12px;
      border-radius: 16px;
      border:1px solid rgba(20,30,45,.12);
      background: rgba(255,255,255,.78);
      box-shadow: 0 16px 36px rgba(16,24,40,.12);
      cursor:pointer;
      transition: transform .18s ease, background .18s ease, border-color .18s ease;
      user-select:none;
    }
    .float-btn:hover{transform: translateY(-2px); background: rgba(255,255,255,.98); border-color: rgba(0,194,255,.22)}
    .float-btn .bubble{
      width:36px; height:36px; border-radius:14px;
      background: linear-gradient(135deg, rgba(0,194,255,.16), rgba(255,79,216,.12));
      border:1px solid rgba(0,194,255,.18);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
    }
    .float-btn .bubble svg{width:18px; height:18px}
    .float-btn strong{font-size:13.5px}
    .float-btn span{display:block; color:var(--muted); font-size:12.5px; margin-top:2px}
    .qr-pop{
      width: 250px;
      border-radius: 18px;
      background: rgba(255,255,255,.92);
      border:1px solid rgba(20,30,45,.12);
      box-shadow: 0 20px 60px rgba(0,0,0,.18);
      overflow:hidden;
      display:none;
      transform-origin: 90% 100%;
      animation: scaleIn .18s ease;
    }
    .qr-pop.show{display:block}
    @keyframes scaleIn{from{opacity:0; transform: scale(.98)} to{opacity:1; transform: scale(1)}}
    .qr-head{
      padding:12px 12px 10px;
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      border-bottom:1px solid rgba(20,30,45,.08);
      background: linear-gradient(135deg, rgba(109,92,255,.10), rgba(0,194,255,.08));
    }
    .qr-head strong{font-size:13.5px}
    .qr-close{
      width:34px; height:34px; border-radius:12px;
      border:1px solid rgba(20,30,45,.12);
      background: rgba(255,255,255,.7);
      cursor:pointer;
      display:flex; align-items:center; justify-content:center;
    }
    .qr-close svg{width:16px; height:16px}
    .qr-body{
      padding:12px;
      display:flex; flex-direction:column; gap:10px; align-items:center;
    }
    .qr-body img{
      width: 210px;
      height:auto;
      border-radius: 16px;
      border:1px solid rgba(20,30,45,.10);
      background: #fff;
    }
    .qr-body p{margin:0; color:var(--muted); font-size:12.8px; line-height:1.6; text-align:center}
    .footer{
      margin-top: 14px;
      background: linear-gradient(180deg, rgba(255,255,255,.2), rgba(255,255,255,.92));
      border-top: 1px solid rgba(20,30,45,.08);
    }
    .footer-inner{
      padding:18px 0 22px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:12px;
      align-items:start;
    }
    .footer-card{
      padding:16px;
      border-radius: var(--radius);
      background: rgba(255,255,255,.74);
      border:1px solid rgba(20,30,45,.10);
      box-shadow: 0 10px 26px rgba(16,24,40,.05);
    }
    .footer-card h3{margin:0 0 10px; font-size:15px}
    .footer-card p{margin:0; color:var(--muted); font-size:13px; line-height:1.8}
    .footer-links{
      display:flex; flex-wrap:wrap; gap:10px; margin-top:10px;
    }
    .footer-links a{
      padding:10px 12px;
      border-radius: 12px;
      background: rgba(255,255,255,.65);
      border:1px solid rgba(20,30,45,.10);
      font-size:13px;
      font-weight:800;
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{transform: translateY(-2px); background: rgba(255,255,255,.98); border-color: rgba(255,79,216,.18)}
    .copyright{
      margin-top:14px;
      color: var(--muted);
      font-size:12.8px;
      display:flex;
      justify-content:space-between;
      gap:10px;
      flex-wrap:wrap;
    }
    .backtop{
      width:42px; height:42px; border-radius:16px;
      border:1px solid rgba(20,30,45,.12);
      background: rgba(255,255,255,.78);
      cursor:pointer;
      display:flex; align-items:center; justify-content:center;
      transition: transform .18s ease, background .18s ease;
    }
    .backtop:hover{transform: translateY(-2px); background: rgba(255,255,255,.98)}
    .visually-hidden{
      position:absolute !important;
      height:1px; width:1px;
      overflow:hidden; clip:rect(1px,1px,1px,1px);
      white-space:nowrap;
    }
    .reveal{
      opacity:0; transform: translateY(10px);
      transition: opacity .5s ease, transform .5s ease;
    }
    .reveal.in{
      opacity:1; transform: translateY(0);
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      .menu{display:none}
      .nav-actions{min-width:auto}
      .mobile-toggle{display:inline-flex}
      .mobile-panel{display:block}
      .quick-grid{grid-template-columns: repeat(2, minmax(0,1fr))}
      .grid-3{grid-template-columns: 1fr}
      .stepper{grid-template-columns: 1fr 1fr}
      .side-by-side{grid-template-columns:1fr}
      .score{grid-template-columns:1fr}
      .reviews{grid-template-columns:1fr}
      .case-grid{grid-template-columns:1fr}
      .articles{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .floating{right:10px; bottom:10px}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      .reveal{transition:none}
      .btn, .card, .mini-stat, .review, .article-card, .float-btn, .cloud-tag, .footer-links a, .link{transition:none}
      .toast.show{animation:none}
      .qr-pop{animation:none}
    }