:root{
  --ink:#1f2430;--muted:#5b6273;--line:#e3e7ef;--brand:#2f6bff;--brand2:#13c2a3;
  --soft:#f5f7fb;--warn:#ff7a45;--bg:#eef1f6;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:18px}
.logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(120deg,var(--brand),var(--brand2));display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:14px}
.nav .links{display:flex;gap:22px;font-size:14px;color:var(--muted)}
.nav .links span{cursor:pointer}
.nav .links span.active{color:var(--brand);font-weight:600}
.btn{padding:9px 18px;border-radius:10px;border:none;cursor:pointer;font-size:14px;font-weight:600}
.btn-primary{background:var(--brand);color:#fff}
.btn-ghost{background:var(--soft);color:var(--ink);border:1px solid var(--line)}
.btn-outline{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.wrap{max-width:1000px;margin:0 auto;padding:0 20px}
.hero{padding:46px 0 30px;text-align:center}
.hero h1{font-size:32px;margin:0 0 12px}
.hero p{color:var(--muted);font-size:15px;margin:0 auto 26px;max-width:640px}
.dropzone{background:#fff;border:2px dashed var(--line);border-radius:18px;padding:40px 20px;max-width:640px;margin:0 auto;cursor:pointer;transition:.2s}
.dropzone:hover{border-color:var(--brand);background:#fafcff}
.dropzone.drag{border-color:var(--brand);background:#fafcff}
.dropzone .ic{width:54px;height:54px;border-radius:14px;background:var(--soft);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.dropzone .big{font-size:17px;font-weight:600}
.dropzone .small{color:var(--muted);font-size:13px;margin-top:6px}
.chips{margin-top:18px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.chip{font-size:12px;background:var(--soft);border:1px solid var(--line);padding:4px 10px;border-radius:20px;color:var(--muted)}
.section{padding:30px 0}
.section h2{font-size:20px;margin:0 0 4px}
.section .sub{color:var(--muted);font-size:14px;margin:0 0 20px}
.cats{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.cat{padding:10px 18px;border-radius:12px;background:#fff;border:1px solid var(--line);cursor:pointer;font-size:14px;font-weight:500}
.cat.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tool{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;cursor:pointer;transition:.15s;position:relative}
.tool:hover{box-shadow:0 6px 18px rgba(20,30,60,.08);transform:translateY(-2px)}
.tool.rec{border-color:var(--brand2);box-shadow:0 0 0 2px rgba(19,194,163,.15)}
.tool .tic{width:38px;height:38px;border-radius:10px;background:var(--soft);display:flex;align-items:center;justify-content:center;margin-bottom:10px;font-weight:600;color:var(--brand)}
.tool .tn{font-size:14px;font-weight:600}
.tool .td{font-size:12px;color:var(--muted);margin-top:3px}
.tool .badge{position:absolute;top:10px;right:10px;font-size:11px;background:#e1f5ee;color:#0F6E56;padding:1px 7px;border-radius:10px}
.lvl{position:absolute;bottom:10px;right:10px;font-size:10px;padding:1px 6px;border-radius:8px;font-weight:600}
.lvl.L0{background:#e1f5ee;color:#0F6E56}.lvl.L2{background:#faece7;color:#993C1D}.lvl.L1{background:#e6f1fb;color:#185FA5}
.detected{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:18px auto 0;max-width:640px;display:none}
.detected.show{display:block}
.detected .row{display:flex;align-items:center;gap:12px}
.detected .fic{width:40px;height:40px;border-radius:10px;background:var(--soft);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:var(--brand)}
.detected .meta{font-size:14px}
.detected .meta small{color:var(--muted);display:block;font-size:12px}
.privacy{background:#e1f5ee;border:1px solid #9FE1CB;border-radius:14px;padding:16px 18px;display:flex;align-items:center;gap:14px;margin-top:24px}
.privacy .txt{font-size:14px;color:#085041}
.privacy .txt b{font-weight:600}
.switch{position:relative;width:46px;height:26px;background:#cbd5e1;border-radius:20px;cursor:pointer;transition:.2s;margin-left:auto}
.switch.on{background:var(--brand2)}
.switch::after{content:"";position:absolute;width:20px;height:20px;background:#fff;border-radius:50%;top:3px;left:3px;transition:.2s}
.switch.on::after{left:23px}
.plan{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.plan .card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}
.plan .card.hl{border-color:var(--brand);box-shadow:0 0 0 2px rgba(47,107,255,.12)}
.plan .card .pt{font-size:16px;font-weight:600}
.plan .card .price{font-size:26px;font-weight:600;margin:10px 0}
.plan .card .price small{font-size:13px;color:var(--muted);font-weight:400}
.plan ul{margin:12px 0 18px;padding-left:18px;font-size:13px;color:var(--muted)}
.modal-bg{position:fixed;inset:0;background:rgba(20,30,60,.45);display:none;align-items:center;justify-content:center;z-index:50}
.modal-bg.show{display:flex}
.modal{background:#fff;border-radius:18px;padding:28px;width:460px;max-width:92vw;text-align:center;position:relative}
.modal h3{margin:0 0 8px;font-size:20px}
.modal p{color:var(--muted);font-size:14px;margin:0 0 18px}
.progress{height:8px;background:var(--soft);border-radius:6px;overflow:hidden;margin:18px 0}
.progress > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:width .12s linear}
.result{display:flex;flex-direction:column;gap:8px;margin:0 0 16px;text-align:left;max-height:220px;overflow:auto}
.result .rf{display:flex;align-items:center;gap:10px;background:var(--soft);border-radius:10px;padding:10px 12px}
.result .rf .fic{width:34px;height:34px;border-radius:8px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600}
.result .rf .nm{font-size:13px;font-weight:500;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.result .rf a{font-size:12px;color:var(--brand);text-decoration:none;font-weight:600}
.apicontract{background:#fff8e6;border:1px solid #FAC775;border-radius:10px;padding:12px 14px;font-size:12px;color:#854F0B;text-align:left;margin:0 0 16px;white-space:pre-wrap;word-break:break-all}
.mbtns{display:flex;gap:10px;justify-content:center}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:#1f2430;color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;opacity:0;transition:.25s;z-index:80;pointer-events:none}
.toast.show{opacity:1}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:30px 0}
@media(max-width:780px){.grid{grid-template-columns:repeat(2,1fr)}.plan{grid-template-columns:1fr}.nav .links{display:none}}

/* 登录/注册 与 会员购买 */
.tabs .tab.active{color:var(--brand);font-weight:600}
.inp:focus{outline:none;border-color:var(--brand)}
.plan-choices .plan-opt{
  flex:1;min-width:130px;background:var(--soft);border:1px solid var(--line);border-radius:14px;
  padding:16px;text-align:center;cursor:pointer;transition:.15s
}
.plan-choices .plan-opt:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 6px 18px rgba(20,30,60,.08)}
.plan-choices .plan-opt .po-name{font-size:14px;font-weight:600}
.plan-choices .plan-opt .po-price{font-size:22px;font-weight:600;margin-top:6px}
.plan-choices .plan-opt .po-price small{font-size:12px;color:var(--muted);font-weight:400}
#qr svg{border:8px solid #fff;background:#fff;border-radius:8px}