/* ===== 在线计算器/工具 ===== */
.tool-shell{display:grid;grid-template-columns:380px 1fr;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-s)}
@media(max-width:900px){.tool-shell{grid-template-columns:1fr}}
.tool-form{padding:30px 28px;border-right:1px solid var(--line-2);background:var(--soft)}
@media(max-width:900px){.tool-form{border-right:0;border-bottom:1px solid var(--line-2)}}
.tool-form h3{font-size:17px;font-weight:800;margin-bottom:6px}
.tool-form .sub{font-size:13px;color:var(--gray-2);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
.field label em{color:var(--gray-2);font-weight:400;font-size:12px;margin-left:4px}
.field input,.field select{width:100%;padding:11px 13px;font-size:15px;border:1px solid var(--line);border-radius:var(--radius);font-family:var(--sans);background:#fff;color:var(--ink);transition:border-color .2s}
.field input:focus,.field select:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(196,30,47,.1)}
.field .unit-input{position:relative}
.field .unit-input input{padding-right:42px}
.field .unit-input u{position:absolute;right:13px;top:50%;transform:translateY(-50%);font-style:normal;font-size:12.5px;color:var(--gray-2)}
.tool-result{padding:32px 34px}
@media(max-width:900px){.tool-result{padding:26px 24px}}
.result-big{display:flex;align-items:baseline;gap:10px;margin-bottom:6px}
.result-big .v{font-size:44px;font-weight:900;font-family:var(--mono);color:var(--red);line-height:1}
.result-big .u{font-size:15px;color:var(--gray)}
.result-note{font-size:13.5px;color:var(--gray-2);margin-bottom:24px}
.result-table{width:100%;border-collapse:collapse;font-size:14px}
.result-table th,.result-table td{padding:11px 12px;text-align:left;border-bottom:1px solid var(--line-2)}
.result-table th{color:var(--gray-2);font-weight:600;font-size:12.5px;width:44%}
.result-table td{font-family:var(--mono);font-weight:600}
.result-table tr:last-child th,.result-table tr:last-child td{border-bottom:0}
.result-ok{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;color:var(--ok);margin-top:18px}
.result-warn{display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;color:#B07608;margin-top:18px}
.tool-cta-band{margin-top:34px;background:linear-gradient(135deg,var(--red) 0%,var(--red-dk) 100%);border-radius:var(--radius-l);padding:28px 30px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.tool-cta-band h3{font-size:20px;font-weight:800;margin-bottom:4px}
.tool-cta-band p{font-size:14px;opacity:.9}
.tool-cta-band .btn{background:#fff;color:var(--red);flex-shrink:0}

/* 工具卡片列表（tools 首页） */
.tool-note{background:var(--soft);border:1px dashed var(--line);border-radius:var(--radius);padding:16px 18px;font-size:13.5px;color:var(--gray);margin-top:26px}

/* ===== CTA 条 ===== */
.cta{background:var(--ink);color:#fff;border-radius:var(--radius-l);padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(196,30,47,.35),transparent 70%)}
.cta h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:10px;position:relative}
.cta p{color:#C7CDD6;font-size:16px;position:relative;max-width:560px}
.cta .btns{display:flex;gap:13px;flex-wrap:wrap;position:relative}
.cta .btn-red{box-shadow:none}
.cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.3)}
.cta .btn-ghost:hover{border-color:#fff}
@media(max-width:600px){.cta{padding:38px 28px}}

/* ===== 业务能力条 ===== */
.svc-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-l);overflow:hidden}
@media(max-width:900px){.svc-flow{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.svc-flow{grid-template-columns:1fr}}
.svc-step{padding:28px 24px;background:#fff;border-right:1px solid var(--line-2)}
.svc-step:last-child{border-right:0}
@media(max-width:900px){.svc-step:nth-child(2){border-right:0}.svc-step:nth-child(1),.svc-step:nth-child(2){border-bottom:1px solid var(--line-2)}.svc-step:nth-child(3){border-right:1px solid var(--line-2)}}
.svc-step .num{font-family:var(--mono);font-size:13px;color:var(--red);font-weight:700;letter-spacing:.1em}
.svc-step h4{font-size:16.5px;font-weight:800;margin:8px 0 7px}
.svc-step p{font-size:13.5px;color:var(--gray)}

/* ===== 步骤/流程（公安备案等用不到，给购买流程） ===== */
.howto{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media(max-width:820px){.howto{grid-template-columns:1fr}}
.howto .s{background:#fff;border:1px solid var(--line-2);border-radius:var(--radius-l);padding:28px 26px;position:relative}
.howto .s::before{counter-increment:step;content:"0" counter(step);font-family:var(--mono);font-size:30px;font-weight:900;color:var(--red-lt);position:absolute;top:20px;right:24px}
.howto .s h4{font-size:17px;font-weight:800;margin-bottom:9px}
.howto .s p{font-size:14px;color:var(--gray)}

/* ===== FAQ ===== */
.faq{max-width:820px;margin:0 auto}
.faq details{border:1px solid var(--line-2);border-radius:var(--radius);margin-bottom:12px;background:#fff;overflow:hidden}
.faq summary{padding:18px 22px;font-size:16px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--red);font-weight:400;transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 22px 20px;font-size:14.5px;color:var(--gray)}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:#AEB6C0;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.site-footer img.flogo{height:44px;margin-bottom:18px;filter:brightness(0) invert(1);opacity:.92}
.site-footer p.about{font-size:13.5px;line-height:1.8;color:#9099A4;max-width:300px}
.site-footer h5{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.site-footer ul li{margin-bottom:10px}
.site-footer ul li a{font-size:13.5px;color:#9AA2AD;transition:color .2s}
.site-footer ul li a:hover{color:#fff}
.site-footer .contact li{font-size:13.5px;color:#9AA2AD;margin-bottom:11px;display:flex;gap:9px;align-items:flex-start}
.site-footer .contact li b{color:#C7CDD6;font-weight:600}
.footer-qr{width:96px;height:96px;border-radius:8px;background:#fff;padding:6px;margin-top:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0}
.footer-bottom .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#78808B}
.footer-bottom .beian a{color:#78808B}
.footer-bottom .beian a:hover{color:#C7CDD6}
.footer-bottom .beian span{margin:0 8px;color:#3C434C}

/* 悬浮联系 */
.float-contact{position:fixed;right:18px;bottom:24px;z-index:50;display:flex;flex-direction:column;gap:10px}
.float-contact a{width:50px;height:50px;border-radius:50%;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-m);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--red);transition:.2s}
.float-contact a:hover{background:var(--red);color:#fff;transform:translateY(-2px)}

/* 简单入场 */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* 通用容器辅助 */
.text-center{text-align:center}
.mt-0{margin-top:0}
.muted{color:var(--gray)}
.lead-narrow{max-width:680px}
.section-cta{text-align:center;margin-top:44px}