:root{
    --pt-bg:#f6f7f9;
    --pt-card:#ffffff;
    --pt-ink:#16181d;
    --pt-sub:#5b6471;
    --pt-mut:#9aa1ad;
    --pt-line:#e8eaed;
    --pt-line-2:#dfe2e6;
    --pt-accent:#2563eb;
    --pt-accent-d:#1d4ed8;
    --pt-radius:10px;
    --pt-radius-lg:14px;
}

.pt-body{
    margin:0;background:var(--pt-bg) !important;color:var(--pt-ink);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif;
    -webkit-font-smoothing:antialiased;line-height:1.6;
}
.pt-body *{box-sizing:border-box}
.pt-body a{color:inherit;text-decoration:none}

.pt-wrap{max-width:1040px;margin:0 auto;padding:0 24px}

.pt-nav{
    height:60px;display:flex;align-items:center;justify-content:space-between;
    border-bottom:1px solid var(--pt-line);background:var(--pt-card);
}
.pt-brand{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--pt-ink)}
.pt-nav-r{display:flex;align-items:center;gap:10px}

.pt-btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    height:40px;padding:0 18px;border-radius:var(--pt-radius);
    font-size:14px;font-weight:500;cursor:pointer;border:1px solid var(--pt-line-2);
    background:var(--pt-card);color:var(--pt-ink);transition:background .12s,border-color .12s;
}
.pt-btn:hover{background:#f3f4f6;border-color:#cfd4da}
.pt-btn-primary{background:var(--pt-accent);border-color:var(--pt-accent);color:#fff}
.pt-btn-primary:hover{background:var(--pt-accent-d);border-color:var(--pt-accent-d)}
.pt-btn-lg{height:46px;padding:0 24px;font-size:15px}
.pt-btn-block{width:100%}

.pt-hero{
    display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
    padding:72px 0 56px;
}
.pt-h1{font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.02em;margin:0 0 16px}
.pt-lead{font-size:16px;color:var(--pt-sub);margin:0 0 28px;max-width:460px}
.pt-cta-row{display:flex;gap:12px;margin-bottom:28px;flex-wrap:wrap}
.pt-points{display:flex;gap:22px;flex-wrap:wrap;font-size:13.5px;color:var(--pt-mut)}
.pt-points i{font-style:normal;color:var(--pt-accent);margin-right:5px}

.pt-preview{
    background:var(--pt-card);border:1px solid var(--pt-line);border-radius:var(--pt-radius-lg);
    overflow:hidden;box-shadow:0 1px 2px rgba(16,24,40,.04),0 8px 28px -12px rgba(16,24,40,.12) !important;
}
.pt-preview-bar{
    display:flex;align-items:center;gap:8px;padding:12px 16px;
    border-bottom:1px solid var(--pt-line);background:#fafbfc;
}
.pt-preview-logo{width:20px;height:20px;border-radius:5px;background:var(--pt-ink)}
.pt-preview-name{font-size:13.5px;font-weight:600}
.pt-prow{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--pt-line)}
.pt-prow:last-child{border-bottom:0}
.pt-pname{font-size:13.5px;font-weight:500}
.pt-pstock{font-size:12px;color:var(--pt-mut);margin-top:2px}
.pt-pprice{font-size:14px;font-weight:600;margin-right:10px}
.pt-pbuy{font-size:12px;color:var(--pt-accent);border:1px solid #c9d6f5;border-radius:8px;padding:5px 12px}

.pt-stats{
    border-top:1px solid var(--pt-line);border-bottom:1px solid var(--pt-line);
    background:var(--pt-card);
}
.pt-stats-in{display:flex;gap:0;padding:0}
.pt-stat{flex:1;text-align:center;padding:26px 12px;border-right:1px solid var(--pt-line)}
.pt-stat:last-child{border-right:0}
.pt-stat-n{font-size:24px;font-weight:700;letter-spacing:-.02em}
.pt-stat-l{font-size:12.5px;color:var(--pt-mut);margin-top:4px}

.pt-feat-sec{padding:56px 0}
.pt-sec-h{font-size:22px;font-weight:700;letter-spacing:-.01em;margin:0 0 6px}
.pt-sec-s{font-size:14px;color:var(--pt-sub);margin:0 0 28px}
.pt-feats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pt-feat{
    background:var(--pt-card);border:1px solid var(--pt-line);border-radius:var(--pt-radius-lg);
    padding:22px;box-shadow:0 1px 2px rgba(16,24,40,.04) !important;
}
.pt-feat-ic{width:38px;height:38px;border-radius:9px;background:#eef2ff;color:var(--pt-accent);
    display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}
.pt-feat-h{font-size:15.5px;font-weight:600;margin:0 0 6px}
.pt-feat-p{font-size:13.5px;color:var(--pt-sub);margin:0;line-height:1.6}

.pt-final{padding:56px 0 64px;text-align:center;border-top:1px solid var(--pt-line)}
.pt-final-h{font-size:24px;font-weight:700;margin:0 0 10px}
.pt-final-p{font-size:14.5px;color:var(--pt-sub);margin:0 0 24px}

.pt-foot{padding:26px 0 40px;text-align:center;color:var(--pt-mut);font-size:12.5px;line-height:1.9}
.pt-foot a{color:var(--pt-sub)}
.pt-foot a:hover{color:var(--pt-accent)}

.pt-auth-page{min-height:100vh;display:flex;flex-direction:column;background:var(--pt-bg)}
.pt-auth-main{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 20px}
.pt-auth{
    width:100%;max-width:380px;background:var(--pt-card);
    border:1px solid var(--pt-line);border-radius:var(--pt-radius-lg);padding:32px 28px;
    box-shadow:0 1px 2px rgba(16,24,40,.04),0 12px 36px -16px rgba(16,24,40,.14) !important;
}
.pt-auth-h{font-size:19px;font-weight:600;margin:0 0 4px}
.pt-auth-s{font-size:13px;color:var(--pt-mut);margin:0 0 22px}
.pt-field{margin-bottom:12px}
.pt-label{display:block;font-size:12.5px;color:var(--pt-sub);margin:0 0 6px}
.pt-input{
    width:100%;height:44px;padding:0 14px;border:1px solid var(--pt-line-2);
    border-radius:var(--pt-radius);font-size:14.5px;background:var(--pt-card);color:var(--pt-ink);
    outline:none;transition:border-color .12s,box-shadow .12s;
}
.pt-input:focus{border-color:var(--pt-accent);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.pt-input::placeholder{color:var(--pt-mut)}
.pt-pwd{position:relative}
.pt-pwd .pt-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);
    width:32px;height:32px;border:0;background:none;color:var(--pt-mut);cursor:pointer;
    display:flex;align-items:center;justify-content:center}
.pt-pwd .pt-input{padding-right:42px}
.pt-auth-btn{margin-top:8px}
.pt-auth-foot{font-size:13px;color:var(--pt-mut);margin:18px 0 0;text-align:center}
.pt-auth-foot a{color:var(--pt-accent)}
.pt-auth-back{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--pt-sub);
    padding:14px 0 0}
.pt-alert{
    padding:11px 13px;border-radius:var(--pt-radius);font-size:13px;margin:0 0 16px;
    background:#fef2f2;border:1px solid #fecaca;color:#b42318;
}
.pt-alert-ok{background:#f0fdf4;border-color:#bbf7d0;color:#15803d}

@media (max-width:760px){
    .pt-hero{grid-template-columns:1fr;gap:32px;padding:44px 0 36px}
    .pt-h1{font-size:27px}
    .pt-feats{grid-template-columns:1fr}
    .pt-wrap{padding:0 18px}
    .pt-stat-n{font-size:20px}
}

.scroll-top-btn{
    position:fixed;right:16px;bottom:calc(80px + env(safe-area-inset-bottom,0px));
    width:44px;height:44px;border-radius:50%;border:0;padding:0;
    background:linear-gradient(135deg,#5b8def,#3b6ee0);
    color:#fff;cursor:pointer;
    box-shadow:0 12px 28px -6px rgba(59,110,224,.5),0 0 0 1px rgba(59,110,224,.1);
    display:flex;align-items:center;justify-content:center;
    z-index:90;
    opacity:0;transform:translateY(12px) scale(.85);pointer-events:none;
    transition:all .25s cubic-bezier(.34,1.56,.64,1);
}
.scroll-top-btn.show{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.scroll-top-btn:active{transform:scale(.92)}
.scroll-top-btn svg{width:20px;height:20px}