:root{--bg:#f7f8fa;--card:#fff;--ink:#0f172a;--mut:#5b6476;--line:#e3e7ee;--pri:#2563eb;--pri-d:#1d4ed8;--acc:#f97316;--ok:#16a34a;--r:14px;--sh:0 1px 2px rgba(15,23,42,.06),0 8px 24px rgba(15,23,42,.06)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--pri)}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.site-h{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.site-h .wrap{display:flex;align-items:center;gap:20px;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--ink);text-decoration:none;font-size:18px}
.logo svg{width:28px;height:28px}
.nav{display:flex;gap:18px;margin-left:auto;align-items:center}
.nav a{color:var(--mut);text-decoration:none;font-size:15px}
.nav a:hover{color:var(--ink)}
.nav .pro-link{background:var(--ink);color:#fff;padding:7px 14px;border-radius:999px;font-weight:600}
.vx-is-pro .nav .pro-link{background:var(--ok)}
@media(max-width:720px){.nav a:not(.pro-link){display:none}}
.hero{padding:34px 0 10px;text-align:center}
.hero h1{font-size:clamp(26px,4.2vw,42px);line-height:1.15;margin:0 0 10px;letter-spacing:-.02em}
.hero p{color:var(--mut);margin:0 auto;max-width:720px;font-size:17px}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px;margin:14px 0 0;padding:0;list-style:none;color:var(--mut);font-size:14px}
.trust li::before{content:"\2713";color:var(--ok);font-weight:700;margin-right:6px}
.tool-wrap{margin-top:22px;margin-bottom:40px}
/* tool */
.vx{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.vx-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;min-height:280px;margin:16px;border:2px dashed #c7d0de;border-radius:12px;cursor:pointer;text-align:center;padding:24px;transition:.15s}
.vx-drop:hover,.vx-over .vx-drop,.vx-drop:focus{border-color:var(--pri);background:#f3f7ff;outline:none}
.vx-drop-ico{width:46px;height:46px;color:var(--pri)}
.vx-drop-title{font-weight:600;font-size:18px;margin:0}
.vx-drop-sub{color:var(--mut);margin:0 0 8px;font-size:14px}
.vx-link{color:var(--pri);text-decoration:underline}
.vx-work{display:none;grid-template-columns:300px 1fr;min-height:480px}
.vx[data-state=work] .vx-drop{display:none}
.vx[data-state=work] .vx-work{display:grid}
@media(max-width:860px){.vx-work{grid-template-columns:1fr}.vx-stage{order:-1}}
.vx-panel{padding:18px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:14px}
.vx-field{display:flex;flex-direction:column;gap:6px}
.vx-field[hidden]{display:none}
.vx-label{font-size:13px;font-weight:600;color:var(--mut);text-transform:uppercase;letter-spacing:.04em;display:flex;justify-content:space-between}
.vx-label output{color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--pri)}
.vx-seg{display:flex;flex-wrap:wrap;gap:6px}
.vx-seg button{flex:1 1 auto;border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 10px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}
.vx-seg button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.vx-toggle{display:flex;align-items:center;gap:10px;font-size:15px;cursor:pointer;user-select:none}
.vx-toggle input{position:absolute;opacity:0;width:1px;height:1px}
.vx-toggle span{width:36px;height:20px;border-radius:999px;background:#cbd5e1;position:relative;flex:none;transition:.15s}
.vx-toggle span::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.15s}
.vx-toggle input:checked+span{background:var(--pri)}
.vx-toggle input:checked+span::after{left:18px}
.vx-toggle input:focus-visible+span{outline:2px solid var(--pri);outline-offset:2px}
.vx-pro-tag{font-size:10px;background:var(--acc);color:#fff;border-radius:4px;padding:1px 5px;margin-left:4px;letter-spacing:.04em}
.vx-is-pro .vx-pro-tag{background:var(--ok)}
.vx-row{display:flex;gap:8px}
.vx-row input,.vx-row select{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font:inherit;background:#fff}
.vx-row select{flex:0 0 74px}
.vx-actions{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.vx-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:10px 14px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.vx-btn:hover{border-color:#b8c2d3}
.vx-btn-primary{background:var(--pri);border-color:var(--pri);color:#fff}
.vx-btn-primary:hover{background:var(--pri-d)}
.vx-btn-ghost{background:transparent}
.vx-batch-status{font-size:14px;background:#f1f5f9;border-radius:8px;padding:8px 10px}
.vx-stage{display:flex;flex-direction:column;min-width:0}
.vx-viewbar{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.vx-viewbar .vx-seg{flex:0 0 auto}
.vx-stats{color:var(--mut);font-size:13px;margin-left:auto}
.vx-canvas{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:16px;min-height:360px}
.vx-canvas[data-v=vector],.vx-canvas[data-v=original]{grid-template-columns:1fr}
.vx-canvas[data-v=vector] .vx-orig,.vx-canvas[data-v=original] .vx-vec{display:none}
.vx-canvas figure{margin:0;position:relative;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;padding:10px;min-height:300px;background-color:#fff;background-image:linear-gradient(45deg,#eef1f5 25%,transparent 25%),linear-gradient(-45deg,#eef1f5 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#eef1f5 75%),linear-gradient(-45deg,transparent 75%,#eef1f5 75%);background-size:18px 18px;background-position:0 0,0 9px,9px -9px,-9px 0}
.vx-canvas img{max-height:62vh;object-fit:contain;width:100%;height:100%}
.vx-canvas figcaption{position:absolute;top:8px;left:8px;font-size:12px;background:rgba(15,23,42,.75);color:#fff;border-radius:6px;padding:2px 8px}
@media(max-width:560px){.vx-canvas{grid-template-columns:1fr}}
.vx-busy{position:absolute;inset:auto 8px 8px auto;background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px 4px 8px;font-size:13px;display:flex;align-items:center;gap:8px}
.vx-busy[hidden]{display:none}
.vx-busy i{width:14px;height:14px;border:2px solid #c7d2fe;border-top-color:var(--pri);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.vx-note{margin:0 16px 16px;font-size:14px;background:#fff7ed;border:1px solid #fed7aa;border-radius:8px;padding:8px 12px}
/* modal */
.vx-modal{border:0;border-radius:16px;max-width:760px;width:calc(100% - 24px);padding:26px;box-shadow:0 30px 80px rgba(0,0,0,.25)}
.vx-modal::backdrop{background:rgba(15,23,42,.55)}
.vx-modal h2{margin:0 0 8px}
.vx-modal-x{position:absolute;right:12px;top:8px}
.vx-modal-x button{border:0;background:none;font-size:28px;cursor:pointer;color:var(--mut)}
.vx-pro-list{margin:0 0 16px;padding-left:20px;color:var(--mut)}
.vx-plans,.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:640px){.vx-plans,.plans{grid-template-columns:1fr}}
.vx-plan{border:1px solid var(--line);border-radius:12px;padding:16px;position:relative;display:flex;flex-direction:column;background:#fff}
.vx-plan h3{margin:0;font-size:16px}
.vx-plan-hot{border-color:var(--acc);box-shadow:0 0 0 2px #fed7aa}
.vx-badge{position:absolute;top:-10px;right:12px;background:var(--acc);color:#fff;font-size:12px;font-weight:700;padding:2px 8px;border-radius:999px}
.vx-price{font-size:28px;font-weight:800;margin:6px 0 0}
.vx-price small{font-size:14px;color:var(--mut);font-weight:500}
.vx-plan-note{color:var(--mut);font-size:14px;margin:2px 0 12px;flex:1}
.vx-key{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.vx-key label{font-weight:600;font-size:14px;display:block;margin-bottom:6px}
.vx-key-msg{font-size:14px;color:var(--mut);min-height:1.4em;margin:6px 0 0}
.vx-fine{font-size:12px;color:var(--mut);margin:12px 0 0}
/* content */
.content{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px clamp(18px,4vw,44px);margin:0 0 28px}
.content h2{font-size:24px;margin:28px 0 8px;letter-spacing:-.01em}
.content h2:first-child{margin-top:0}
.content h3{font-size:18px;margin:20px 0 6px}
.content p,.content li{color:#283246}
.steps{counter-reset:s;list-style:none;padding:0}
.steps li{counter-increment:s;position:relative;padding-left:40px;margin:10px 0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:#e0e7ff;color:var(--pri-d);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:8px 0;background:#fff}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:8px 0 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:12px 0}
.cards a{display:block;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;color:var(--ink);background:#fff}
.cards a:hover{border-color:var(--pri)}
.cards a b{display:block;margin-bottom:4px}
.cards a span{color:var(--mut);font-size:14px}
table.cmp{width:100%;border-collapse:collapse;font-size:15px}
table.cmp th,table.cmp td{border-bottom:1px solid var(--line);padding:8px;text-align:left}
.site-f{border-top:1px solid var(--line);background:#fff;margin-top:20px;padding:24px 0;color:var(--mut);font-size:14px}
.site-f .wrap{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center}
.site-f a{color:var(--mut)}
.legal h1{font-size:30px;margin:28px 0 6px}
.legal .content{margin-top:16px}

.vx-auto{margin-left:6px;padding:0 6px;font:inherit;font-size:11px;line-height:18px;border:1px solid currentColor;border-radius:9px;background:transparent;color:inherit;opacity:.75;cursor:pointer}.vx-auto:hover{opacity:1}.vx-auto[hidden]{display:none}