/* ============ 商城自带官网样式（高端大气 / 白色背景黑色字） ============ */
:root{
    --p:#111827;            /* 主文字：黑色 */
    --p2:#374151;
    --mut:#9ca3af;
    --pri:#6d5efc;
    --pri2:#4f46e5;
    --pri3:#eef2ff;
    --line:#e5e7eb;
    --bg:#ffffff;
    --bg2:#f8fafc;
    --r:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--p);background:var(--bg);line-height:1.6}
a{color:var(--pri);text-decoration:none}
img{max-width:100%;display:block}
.mb-wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.mb-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.mb-header-in{display:flex;justify-content:space-between;align-items:center;height:64px}
.mb-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--p)}
.mb-logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px}
.mb-nav{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:600}
.mb-nav a{color:var(--p2)}
.mb-nav a:hover{color:var(--pri)}
.mb-btn{display:inline-block;padding:9px 18px;border-radius:11px;font-weight:700;font-size:13.5px;transition:.2s}
.mb-btn-p{background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff !important;box-shadow:0 6px 16px rgba(79,70,229,.3)}
.mb-btn-p:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(79,70,229,.4)}
.mb-btn-g{background:#f3f4f6;color:var(--p) !important;border:1px solid var(--line)}
.mb-btn-lg{padding:14px 30px;font-size:15px;border-radius:13px}
.mb-hero{padding:72px 0 64px;background:radial-gradient(1200px 500px at 80% -10%,#eef2ff,transparent 60%),#fff;border-bottom:1px solid var(--line)}
.mb-hero-in{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.mb-hero h1{font-size:40px;line-height:1.28;font-weight:900;margin:16px 0 14px;letter-spacing:-.5px}
.mb-hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--pri),var(--pri2));-webkit-background-clip:text;background-clip:text;color:transparent}
.mb-hero .sub{color:var(--p2);font-size:16px;line-height:1.9}
.mb-hero-cta{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.mb-hero-note{margin-top:20px;font-size:13px;color:var(--mut)}
.mb-hero-note i{color:#10b981;font-style:normal}
.mb-hero-note b{color:var(--pri);font-weight:700}
.mb-badge{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--pri3);color:var(--pri2);font-size:12.5px;font-weight:700}
.mb-hero-visual{position:relative}
.mb-shot{border-radius:18px;box-shadow:0 24px 60px rgba(17,24,39,.16);border:1px solid #f1f3f9}
.mb-float{position:absolute;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 16px;box-shadow:0 12px 30px rgba(17,24,39,.1);font-size:13px}
.mb-float b{display:block;font-size:13.5px}
.mb-float span{color:var(--mut);font-size:12px}
.mb-f1{top:14px;left:-16px}
.mb-f2{bottom:18px;right:-14px}
.mb-section{padding:64px 0}
.mb-section.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.mb-sec-head{text-align:center;max-width:640px;margin:0 auto 40px}
.mb-eyebrow{display:inline-block;font-size:12px;font-weight:800;letter-spacing:2px;color:var(--pri);margin-bottom:8px}
.mb-sec-head h2{font-size:30px;font-weight:900;letter-spacing:-.4px}
.mb-sec-head p{color:var(--mut);margin-top:8px;font-size:14.5px}
.mb-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mb-feat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;transition:.2s}
.mb-feat:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(17,24,39,.07);border-color:#c7d2fe}
.mb-feat .ic{width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px;background:var(--pri3)}
.mb-feat h3{font-size:16px;margin-bottom:8px}
.mb-feat p{font-size:13px;color:var(--p2);line-height:1.8}
.mb-shots{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.mb-shots img{border-radius:14px;border:1px solid var(--line);box-shadow:0 10px 26px rgba(17,24,39,.08)}
.mb-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.mb-step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px}
.mb-step h3{font-size:15px;margin-bottom:8px;padding-top:34px}
.mb-step p{font-size:13px;color:var(--p2);line-height:1.8}
.mb-step::before{counter-increment:step;content:counter(step);position:absolute;margin-top:-2px;width:30px;height:30px;border-radius:10px;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(79,70,229,.3)}
.mb-price-wrap{max-width:460px;margin:0 auto}
.mb-price{background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px 32px;text-align:center;box-shadow:0 18px 48px rgba(17,24,39,.08)}
.mb-price .tag{display:inline-block;background:var(--pri3);color:var(--pri2);font-size:12.5px;font-weight:700;padding:5px 14px;border-radius:999px}
.mb-price .amount{font-size:52px;font-weight:900;margin:14px 0 4px;letter-spacing:-1px}
.mb-price .amount small{font-size:22px;font-weight:700}
.mb-price .once{color:var(--mut);font-size:13.5px}
.mb-price ul{list-style:none;margin:22px 0 26px;text-align:left}
.mb-price li{font-size:13.5px;color:var(--p2);padding:7px 0;line-height:1.7}
.mb-price li i{color:#10b981;font-style:normal;margin-right:8px}
.mb-cta{text-align:center;margin-top:34px}
.mb-footer{background:#0f1420;color:#cbd5e1;padding:44px 0 0}
.mb-foot-in{display:grid;grid-template-columns:1.4fr 1fr;gap:30px;padding-bottom:28px}
.mb-foot-t{color:#fff;font-weight:800;margin-bottom:10px}
.mb-foot-d{font-size:13px;color:#94a3b8;line-height:1.8}
.mb-footer a{display:block;color:#94a3b8;font-size:13px;margin:6px 0}
.mb-footer a:hover{color:#fff}
.mb-foot-c{border-top:1px solid #1f2937;text-align:center;padding:18px 0;font-size:12.5px;color:#64748b}
.mb-page-hero{padding:56px 0 36px;text-align:center;background:radial-gradient(900px 380px at 50% -20%,#eef2ff,transparent 65%)}
.mb-page-hero h1{font-size:32px;font-weight:900}
.mb-page-hero p{color:var(--mut);margin-top:8px}
.mb-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;margin-bottom:18px;box-shadow:0 8px 24px rgba(17,24,39,.05)}
.mb-alert{border-radius:11px;padding:13px 16px;font-size:13.5px;line-height:1.8;margin-bottom:16px}
.mb-alert.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.mb-alert.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.mb-alert.info{background:#f0f7ff;border:1px solid #c9e2ff;color:#1d4ed8}
.mb-key{background:#f3f4fb;border:1px solid #e6e8f5;border-radius:10px;padding:10px 16px;font-family:Consolas,Monaco,monospace;font-size:16px;color:#e04a3a;font-weight:700;letter-spacing:1px}
.mb-form label{display:block;font-weight:700;font-size:14px;margin:14px 0 7px}
.mb-form .inp{width:100%;padding:12px 14px;border:1px solid #d1d5db;border-radius:11px;font-size:14.5px;outline:none}
.mb-form .inp:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(109,94,252,.15)}
.mb-form .hint{display:block;font-size:12.5px;color:var(--mut);margin-top:6px;line-height:1.7}
.mb-toc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin-bottom:22px}
.mb-toc a{display:inline-block;margin:4px 12px 4px 0;font-size:13px}
.mb-ol ol{padding-left:22px}
.mb-ol li{font-size:14px;line-height:1.9;margin:6px 0;color:var(--p2)}
.mb-ol code,.mb-k{background:#f3f4fb;border:1px solid #e6e8f5;border-radius:6px;padding:2px 8px;font-family:Consolas,Monaco,monospace;font-size:13px;color:#e04a3a}
.mb-num{display:inline-flex;width:26px;height:26px;border-radius:9px;background:linear-gradient(135deg,var(--pri),var(--pri2));color:#fff;font-weight:800;font-size:13px;align-items:center;justify-content:center;margin-right:8px;vertical-align:middle}
@media(max-width:900px){
    .mb-hero-in{grid-template-columns:1fr}
    .mb-feats,.mb-shots{grid-template-columns:1fr 1fr}
    .mb-steps{grid-template-columns:1fr 1fr}
    .mb-hero h1{font-size:30px}
    .mb-nav{gap:12px;font-size:13px}
}
@media(max-width:560px){
    .mb-feats,.mb-shots,.mb-steps{grid-template-columns:1fr}
}