/* ════════════════════════════════════════════
   福宝科技官网 - 共享样式表
   主题：科技蓝 #1a56db + 电光蓝 #0ea5e9
   ════════════════════════════════════════════ */

/* ── Reset & Base ── */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 24px)}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;-webkit-font-smoothing:antialiased;background:#f7f8fc;color:#111827;line-height:1.8;overflow-x:hidden}

/* ── CSS Variables ── */
:root{
  --b1:#1e40af;--b2:#1a56db;--b3:#2563eb;--b4:#3b82f6;--b5:#60a5fa;--b6:#93c5fd;
  --cyan:#0ea5e9;--cyan2:#06b6d4;
  --purple:#7c3aed;
  --dark:#0a0f1a;--dark2:#111827;--dark3:#1f2937;--grey:#6b7280;--lgrey:#9ca3af;
  --ice:#f0f4ff;--ice2:#e8eeff;--ice3:#dbe4ff;
  --border:#e5e7eb;--border-b:rgba(37,99,235,.2);
  --white:#ffffff;
  --nav-h:64px;
  --shadow-sm:0 2px 10px rgba(0,0,0,.04);
  --shadow-md:0 6px 24px rgba(30,64,175,.06);
  --shadow-lg:0 12px 48px rgba(30,64,175,.1);
  --glow:0 0 30px rgba(59,130,246,.15);
}

/* ── Nav ── */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);background:rgba(247,248,252,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 24px}
.nav-inner{max-width:1200px;width:100%;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--b2),var(--cyan));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:900;color:#fff;flex-shrink:0;letter-spacing:0}
.nav-logo-text{font-size:17px;font-weight:800;color:var(--b1);letter-spacing:1px}
.nav-logo-text span{color:var(--cyan)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{font-size:13px;color:var(--grey);text-decoration:none;padding:6px 14px;border-radius:6px;transition:.2s;letter-spacing:.5px;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--b2);background:rgba(37,99,235,.06)}

/* Hamburger */
.nav-hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;border:none;background:none}
.nav-hamburger span{display:block;width:22px;height:2px;background:var(--b2);border-radius:2px;transition:.3s}
.nav-hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-hamburger.open span:nth-child(2){opacity:0}
.nav-hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile menu */
.nav-mobile{display:none;position:fixed;top:var(--nav-h);left:0;right:0;background:rgba(247,248,252,.98);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:16px 24px 24px;z-index:999;flex-direction:column;gap:4px;box-shadow:0 8px 32px rgba(0,0,0,.1)}
.nav-mobile.open{display:flex}
.nav-mobile a{font-size:15px;color:var(--dark2);text-decoration:none;padding:12px 0;border-bottom:1px solid var(--ice3);font-weight:500}
.nav-mobile a:last-child{border:none;margin-top:8px}

/* ── Layout helpers ── */
.con{max-width:1100px;margin:0 auto;position:relative;z-index:2;padding:0 20px}
section{padding:80px 0;position:relative}
.pt-nav{padding-top:calc(var(--nav-h) + 80px)}

/* Section labels */
.sl{font-size:10px;letter-spacing:5px;color:var(--b3);text-transform:uppercase;margin-bottom:6px;font-weight:600}
.st{font-size:clamp(22px,3.8vw,32px);font-weight:800;margin-bottom:10px;line-height:1.3;color:var(--dark)}
.st .h{color:var(--b2)}
.sd{font-size:13px;color:var(--grey);max-width:640px;line-height:2}
.sc{text-align:center}.sc .sd{margin:0 auto}

/* Divider */
.dv{height:1px;background:linear-gradient(to right,transparent,var(--border),transparent);max-width:900px;margin:0 auto}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 32px;border-radius:8px;font-size:13px;font-weight:600;text-decoration:none;cursor:pointer;transition:.3s;letter-spacing:.5px;border:none}
.btn-primary{background:linear-gradient(135deg,var(--b2),var(--b3));color:#fff;box-shadow:0 4px 16px rgba(37,99,235,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(37,99,235,.4)}
.btn-cyan{background:linear-gradient(135deg,var(--cyan),var(--cyan2));color:#fff}
.btn-cyan:hover{transform:translateY(-2px);opacity:.92}
.btn-outline{background:none;border:1.5px solid var(--b2);color:var(--b2)}
.btn-outline:hover{background:var(--b2);color:#fff}
.btn-outline-w{background:none;border:1.5px solid rgba(255,255,255,.4);color:rgba(255,255,255,.85)}
.btn-outline-w:hover{background:rgba(255,255,255,.1)}
.btn-lg{padding:16px 40px;font-size:14px;border-radius:10px}
.btn-sm{padding:8px 20px;font-size:12px;border-radius:6px}

/* ── Cards ── */
.card{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:24px;transition:all .3s;box-shadow:var(--shadow-sm)}
.card:hover{border-color:var(--b4);box-shadow:var(--shadow-md);transform:translateY(-3px)}
.cards{display:grid;gap:16px;margin-top:32px}
.cards-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.cards-3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.cards-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}

.tag{font-size:10px;padding:3px 10px;border:1px solid rgba(59,130,246,.25);border-radius:10px;color:var(--b3);display:inline-flex;align-items:center}

/* ── Service items ── */
.svc-item{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:28px;display:flex;gap:20px;transition:.3s;box-shadow:var(--shadow-sm)}
.svc-item:hover{border-color:var(--b4);box-shadow:var(--shadow-md)}
.svc-num{font-size:42px;font-weight:900;color:rgba(37,99,235,.08);line-height:1;flex-shrink:0;min-width:50px}
.svc-content .sc-title{font-size:15px;font-weight:700;color:var(--b1);margin-bottom:6px}
.svc-content .sc-desc{font-size:12px;color:var(--grey);line-height:1.9}
.svc-content .sc-features{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}

/* ── Trust badges ── */
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.trust-badge{display:flex;align-items:center;gap:10px;background:var(--white);border:1px solid var(--border);border-radius:10px;padding:12px 18px;box-shadow:var(--shadow-sm)}
.tb-icon{font-size:22px}
.tb-text .tbt{font-size:12px;font-weight:700;color:var(--b1)}
.tb-text .tbd{font-size:10px;color:var(--lgrey)}

/* ── Big numbers ── */
.big-nums{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:32px}
.bn{text-align:center;padding:22px 28px;background:var(--white);border:1px solid var(--border);border-radius:12px;min-width:140px;box-shadow:var(--shadow-sm)}
.bn .num{font-size:36px;font-weight:900;color:var(--b2);line-height:1}
.bn .lbl{font-size:11px;color:var(--lgrey);margin-top:4px;letter-spacing:1px}

/* ── Process steps ── */
.process{display:flex;flex-wrap:wrap;gap:0;margin-top:40px;position:relative}
.process::before{content:'';position:absolute;top:26px;left:0;right:0;height:1px;background:rgba(59,130,246,.15)}
.step{flex:1;min-width:120px;text-align:center;position:relative;padding:0 8px}
.step-num{width:52px;height:52px;border-radius:50%;border:1.5px solid rgba(59,130,246,.3);background:var(--white);display:flex;align-items:center;justify-content:center;margin:0 auto 12px;font-size:17px;font-weight:900;color:var(--b2);position:relative;z-index:1;box-shadow:var(--shadow-sm)}
.step-title{font-size:12px;font-weight:700;color:var(--dark3);margin-bottom:4px}
.step-desc{font-size:11px;color:var(--grey);line-height:1.6}

/* ── Highlight box ── */
.hl-box{background:linear-gradient(135deg,rgba(37,99,235,.03),rgba(14,165,233,.02));border:1px solid rgba(59,130,246,.15);border-radius:14px;padding:28px;margin-top:24px}
.hl-box .hb-title{font-size:14px;font-weight:700;color:var(--b1);margin-bottom:14px}
.hl-box ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px}
.hl-box li{font-size:12px;color:var(--grey);padding-left:16px;position:relative;line-height:1.9}
.hl-box li::before{content:'▸';position:absolute;left:0;color:var(--b4)}

/* ── Pain points ── */
.pain-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:28px}
.pain-item{background:var(--ice);border:1px solid var(--ice3);border-radius:12px;padding:20px;transition:.3s}
.pain-item:hover{border-color:var(--b4);background:var(--white)}
.pain-icon{font-size:26px;margin-bottom:8px}
.pain-title{font-size:13px;font-weight:700;color:var(--dark3);margin-bottom:4px}
.pain-desc{font-size:11px;color:var(--grey);line-height:1.8}

/* ── Timeline ── */
.timeline{position:relative;padding-left:28px;margin-top:32px}
.timeline::before{content:'';position:absolute;left:6px;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--b2),var(--b5),transparent)}
.tl-item{position:relative;margin-bottom:28px;padding-left:20px}
.tl-dot{position:absolute;left:-28px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--b2);border:2px solid #f7f8fc;box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.tl-year{font-size:11px;font-weight:700;color:var(--b2);letter-spacing:2px;margin-bottom:2px}
.tl-title{font-size:14px;font-weight:700;color:var(--dark3);margin-bottom:3px}
.tl-desc{font-size:12px;color:var(--grey);line-height:1.8}

/* ── Cases ── */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:32px}
.case-card{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:24px;transition:.3s;box-shadow:var(--shadow-sm)}
.case-card:hover{border-color:var(--b4);box-shadow:var(--shadow-md)}
.case-tag{font-size:10px;padding:3px 10px;background:rgba(59,130,246,.06);border:1px solid rgba(59,130,246,.15);border-radius:10px;color:var(--b3);display:inline-block;margin-bottom:10px}
.case-name{font-size:15px;font-weight:700;color:var(--dark);margin-bottom:6px}
.case-result{font-size:24px;font-weight:900;color:var(--b2);margin:8px 0 4px}
.case-desc{font-size:12px;color:var(--grey);line-height:1.8}

/* ── Team ── */
.tm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:28px}
.tm{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:24px;text-align:center;transition:.3s;box-shadow:var(--shadow-sm)}
.tm:hover{border-color:var(--b4);box-shadow:var(--shadow-md)}
.tm-av{width:68px;height:68px;border-radius:50%;border:2px solid rgba(59,130,246,.25);margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:24px;background:rgba(37,99,235,.04);overflow:hidden}
.tm-av img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.tm-name{font-size:15px;font-weight:700;color:var(--dark)}
.tm-role{font-size:11px;color:var(--b3);letter-spacing:1px;margin:4px 0 10px}
.tm-desc{font-size:11px;color:var(--grey);line-height:1.8;text-align:left}

/* ── Partner tags ── */
.partner-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px;justify-content:center}
.partner-tag{padding:8px 18px;background:var(--ice);border:1px solid var(--ice3);border-radius:8px;font-size:12px;color:var(--dark3);font-weight:500;transition:.2s;cursor:default}
.partner-tag:hover{border-color:var(--b4);color:var(--b2);background:var(--white)}

/* ── CTA Section ── */
.cta-sec{background:linear-gradient(160deg,#0a1628 0%,#1e3a5f 55%,#1a56db 100%);padding:80px 0;position:relative;overflow:hidden}
.cta-sec::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 30%,rgba(59,130,246,.15),transparent 60%);pointer-events:none}
.cta-inner{max-width:720px;margin:0 auto;text-align:center;padding:0 24px;position:relative;z-index:1}
.cta-title{font-size:clamp(24px,4vw,38px);font-weight:900;line-height:1.3;margin-bottom:12px;color:#fff}
.cta-title .g{background:linear-gradient(135deg,var(--b5),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.cta-sub{font-size:14px;color:rgba(255,255,255,.6);margin-bottom:36px;line-height:2}
.cta-btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-bottom:36px}
.contact-items{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}
.ci{font-size:12px;color:rgba(255,255,255,.5);display:flex;align-items:center;gap:8px}
.ci .ci-icon{font-size:16px}

/* ── Footer ── */
footer{background:var(--dark);padding:40px 20px;text-align:center}
.footer-inner{max-width:900px;margin:0 auto}
.footer-logo{font-size:16px;font-weight:800;color:rgba(255,255,255,.7);letter-spacing:2px;margin-bottom:16px}
.footer-logo span{color:var(--cyan)}
.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 24px;margin-bottom:20px}
.footer-links a{font-size:12px;color:rgba(255,255,255,.35);text-decoration:none;transition:.2s}
.footer-links a:hover{color:rgba(255,255,255,.7)}
footer p{font-size:11px;color:rgba(255,255,255,.25);line-height:2}

/* ── Floating consult ── */
.float-consult{position:fixed;right:20px;bottom:40px;z-index:998;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.fc-btn{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--b2),var(--b3));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;box-shadow:0 4px 20px rgba(37,99,235,.35);transition:.3s;border:none;text-decoration:none}
.fc-btn:hover{transform:scale(1.1);box-shadow:0 6px 28px rgba(37,99,235,.45)}
.fc-btn.cyan{background:linear-gradient(135deg,var(--cyan),var(--cyan2))}
.fc-label{font-size:10px;background:var(--dark);color:#fff;padding:4px 10px;border-radius:4px;white-space:nowrap;opacity:0;pointer-events:none;transition:.2s;position:absolute;right:60px}
.fc-wrap:hover .fc-label{opacity:1}
.fc-wrap{display:flex;align-items:center;position:relative}

/* Modal */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);z-index:2000;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal-box{background:var(--white);border-radius:16px;padding:32px;max-width:420px;width:90%;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal-close{position:absolute;top:16px;right:16px;width:30px;height:30px;border:none;background:var(--ice);border-radius:50%;cursor:pointer;font-size:14px;color:var(--grey);display:flex;align-items:center;justify-content:center}
.modal-title{font-size:17px;font-weight:700;color:var(--b1);margin-bottom:6px}
.modal-sub{font-size:12px;color:var(--grey);margin-bottom:20px}
.modal-form input,.modal-form textarea,.modal-form select{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:13px;outline:none;font-family:inherit;transition:.2s;background:var(--ice)}
.modal-form input:focus,.modal-form textarea:focus,.modal-form select:focus{border-color:var(--b4);background:#fff}
.modal-form textarea{height:80px;resize:none;margin-top:10px}
.modal-form input{margin-top:10px}
.modal-form input:first-child{margin-top:0}
.modal-form select{margin-top:10px;appearance:auto}
.modal-submit{width:100%;padding:12px;margin-top:14px;background:linear-gradient(135deg,var(--b2),var(--b3));color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:.3s}
.modal-submit:hover{opacity:.9}

/* ── Scroll reveal ── */
[data-sr]{opacity:0;transform:translateY(28px);transition:opacity .65s ease,transform .65s ease}
[data-sr].visible{opacity:1;transform:none}

/* ── Section bg ── */
.bg-ice{background:var(--ice)}
.bg-blue-light{background:linear-gradient(180deg,rgba(37,99,235,.03) 0%,rgba(247,248,252,1) 100%)}

/* ── Product card (special for products page) ── */
.prod-card{background:var(--white);border:1px solid var(--border);border-radius:16px;padding:32px;transition:.3s;position:relative;overflow:hidden}
.prod-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(to right,var(--b2),var(--cyan))}
.prod-card:hover{border-color:var(--b4);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.prod-icon{width:56px;height:56px;border-radius:12px;background:linear-gradient(135deg,var(--b2),var(--b3));display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.prod-title{font-size:17px;font-weight:700;color:var(--dark);margin-bottom:8px}
.prod-desc{font-size:12px;color:var(--grey);line-height:1.9;margin-bottom:14px}
.prod-tags{display:flex;flex-wrap:wrap;gap:5px}

/* ── Channel card ── */
.ch-card{background:var(--white);border:1px solid var(--border);border-radius:14px;padding:20px;text-align:center;transition:.3s}
.ch-card:hover{border-color:var(--b4);box-shadow:var(--shadow-md)}
.ch-name{font-size:13px;font-weight:600;color:var(--dark3)}

/* ── Responsive ── */
@media(max-width:768px){
  .nav-links{display:none}
  .nav-hamburger{display:flex}
  section{padding:56px 0}
  .cta-sec{padding:60px 0}
  .process::before{display:none}
  .step{min-width:50%}
}
@media(max-width:480px){
  .step{min-width:100%}
  .big-nums{gap:10px}
  .bn{min-width:calc(50% - 5px)}
}