:root{--ink:#0f172a;--mut:#475569;--line:#e2e8f0;--bg:#f8fafc;--pri:#2563eb;--pri2:#1d4ed8;--ok:#059669;--warn:#d97706;--bad:#dc2626;--r:14px}
*{box-sizing:border-box}body{margin:0;font:16px/1.55 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:#fff}
a{color:var(--pri)}.wrap{max-width:1100px;margin:0 auto;padding:0 20px}
header.nav{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:5}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:19px;color:var(--ink);text-decoration:none}.logo span{color:var(--pri)}
nav a{margin-left:20px;color:var(--mut);text-decoration:none;font-size:15px}
.btn{display:inline-block;background:var(--pri);color:#fff;border:0;border-radius:10px;padding:12px 20px;font-weight:600;font-size:16px;text-decoration:none;cursor:pointer}
.btn:hover{background:var(--pri2)}.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.btn.sm{padding:8px 14px;font-size:14px}
.hero{padding:70px 0 50px;background:linear-gradient(180deg,#eff6ff,#fff)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:46px;line-height:1.1;margin:0 0 16px;letter-spacing:-.02em}.hero p.lead{font-size:19px;color:var(--mut);margin:0 0 26px}
.pill{display:inline-block;background:#dbeafe;color:#1e40af;border-radius:99px;padding:4px 12px;font-size:13px;font-weight:600;margin-bottom:14px}
.trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:20px;color:var(--mut);font-size:14px}
.card{border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:22px}
.heroimg{box-shadow:0 20px 50px -20px rgba(30,64,175,.35)}
section{padding:60px 0}section h2{font-size:32px;margin:0 0 10px;letter-spacing:-.01em}.sub{color:var(--mut);margin:0 0 30px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid3 h3{margin:6px 0;font-size:18px}.grid3 p{margin:0;color:var(--mut);font-size:15px}
.ic{font-size:26px}.alt{background:var(--bg)}
.docs{columns:3;gap:20px;padding:0;list-style:none}.docs li{padding:4px 0;break-inside:avoid}
.price{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.price .card{display:flex;flex-direction:column}
.price .amt{font-size:36px;font-weight:800;margin:6px 0}.price ul{padding-left:18px;color:var(--mut);flex:1}.price .hl{border:2px solid var(--pri)}
.note{font-size:13px;color:var(--mut)}
details{border-bottom:1px solid var(--line);padding:14px 0}summary{font-weight:600;cursor:pointer}
footer{border-top:1px solid var(--line);padding:30px 0;color:var(--mut);font-size:14px}footer a{color:var(--mut);margin-right:16px}
/* app */
.app{display:grid;grid-template-columns:340px 1fr;gap:24px;padding:28px 0 60px}
.panel h2{font-size:18px;margin:0 0 12px}.panel label{display:block;font-weight:600;font-size:14px;margin:14px 0 6px}
select,input[type=number]{width:100%;padding:10px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:#fff}
#drop{border:2px dashed #93c5fd;border-radius:var(--r);padding:28px;text-align:center;background:#eff6ff;cursor:pointer}
#drop.over{background:#dbeafe}#drop input{display:none}
#status{font-size:14px;color:var(--mut);margin-top:10px;min-height:20px}#status.err{color:var(--bad)}
.stage{display:grid;grid-template-columns:minmax(220px,360px) 1fr;gap:24px;align-items:start}
#preview{width:100%;height:auto;border:1px solid var(--line);border-radius:6px;background:repeating-conic-gradient(#f1f5f9 0 25%,#fff 0 50%) 0 0/16px 16px}
.row{display:flex;gap:10px;align-items:center}.row input[type=range]{flex:1}
.summary{font-weight:700;padding:10px 14px;border-radius:10px;margin-bottom:10px}
.summary.pass{background:#ecfdf5;color:var(--ok)}.summary.warn{background:#fffbeb;color:var(--warn)}.summary.fail{background:#fef2f2;color:var(--bad)}
#checks{list-style:none;padding:0;margin:0}.chk{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}
.chk small{display:block;color:var(--mut)}.ico{flex:0 0 24px;height:24px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px}
.pass .ico{background:var(--ok)}.warn .ico{background:var(--warn)}.fail .ico{background:var(--bad)}.info .ico{background:#64748b}
.dl{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.pro-badge{font-size:11px;background:#fef3c7;color:#92400e;border-radius:99px;padding:2px 8px;margin-left:6px;vertical-align:middle}
#specinfo{font-size:14px;background:var(--bg);border-radius:10px;padding:10px 12px;margin-top:12px}
.legal{max-width:760px}.draft{background:#fef3c7;padding:10px 14px;border-radius:10px}
@media(max-width:860px){.hero .wrap,.app,.stage,.grid3,.price{grid-template-columns:1fr}.hero h1{font-size:34px}.docs{columns:1}nav a:not(.btn){display:none}}
.notice{font-size:14px;border-radius:10px;padding:10px 12px;margin-top:12px;line-height:1.45}
.notice.stop{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.notice.warn{background:#fffbeb;color:#92400e;border:1px solid #fde68a}
.notice.info{background:#eff6ff;color:#1e3a8a;border:1px solid #bfdbfe}
.bgtool{margin-top:14px;border:1px solid var(--line);border-radius:10px;padding:10px 12px}.bgtool summary{font-weight:600;font-size:14px}
.warntext{color:#92400e;font-weight:600}
.logo{display:inline-flex;align-items:center}.logo img{display:block;margin-right:8px}