/* 功夫旧改官网共享样式 - 极致轻量，无JS依赖，系统字体 */
*{margin:0;padding:0;box-sizing:border-box}
:root{--c:#1a3a5c;--a:#2563eb;--a2:#10b981;--t:#1a1f36;--m:#64748b;--r:#e2e8f0;--bg:#f8fafc;--bg2:#fff;--w:#f59e0b;--d:#ef4444}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--t);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--a);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:960px;margin:0 auto;padding:0 1rem}

/* 导航 */
.nav{background:var(--c);color:#fff;padding:0;position:sticky;top:0;z-index:100;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;flex-wrap:wrap}
.nav .logo{font-size:1.3rem;font-weight:700;color:#fff;white-space:nowrap}
.nav .logo span{color:var(--a2)}
.nav ul{list-style:none;display:flex;gap:.5rem;flex-wrap:wrap}
.nav ul li a{color:#fff;font-size:.9rem;padding:.4rem .6rem;border-radius:4px;transition:background .2s}
.nav ul li a:hover,.nav ul li a.active{background:rgba(255,255,255,.15);text-decoration:none}
.nav .phone{font-size:.85rem;color:var(--a2);white-space:nowrap}

/* Hero */
.hero{background:linear-gradient(135deg,var(--c),#2d5a87);color:#fff;padding:3rem 1rem;text-align:center}
.hero h1{font-size:1.8rem;margin-bottom:.5rem}
.hero .sub{font-size:1.05rem;opacity:.9;margin-bottom:1rem}
.hero .tags{display:flex;justify-content:center;gap:.5rem;flex-wrap:wrap}
.hero .tags span{background:rgba(255,255,255,.15);padding:.2rem .7rem;border-radius:20px;font-size:.82rem}

/* Section */
.section{padding:2.5rem 0}
.section h2{font-size:1.35rem;color:var(--c);margin-bottom:1rem;padding-bottom:.4rem;border-bottom:2px solid var(--a);display:inline-block}
.section h3{font-size:1.1rem;margin:1.25rem 0 .6rem;color:var(--t)}

/* Service Cards */
.svc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin:1.5rem 0}
.svc-card{background:var(--bg2);border:1px solid var(--r);border-radius:8px;padding:1.25rem;transition:box-shadow .2s,transform .2s}
.svc-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.08);transform:translateY(-2px)}
.svc-card h3{margin:0 0 .4rem;color:var(--c);font-size:1rem}
.svc-card p{font-size:.88rem;color:var(--m)}
.svc-card .more{font-size:.82rem;margin-top:.5rem;display:inline-block}

/* Table */
.tbl{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.9rem;background:var(--bg2);border-radius:8px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.tbl th{background:var(--c);color:#fff;padding:.7rem .85rem;text-align:left;font-weight:600}
.tbl td{padding:.65rem .85rem;border-bottom:1px solid var(--r)}
.tbl tr:last-child td{border-bottom:none}
.tbl tr:nth-child(even){background:var(--bg)}

/* Alert */
.alert{padding:1rem 1.25rem;border-radius:8px;margin:1rem 0;border-left:4px solid}
.alert-info{background:#eff6ff;border-color:var(--a);color:#1e40af}
.alert-warn{background:#fffbeb;border-color:var(--w);color:#92400e}

/* Footer */
.footer{background:var(--c);color:#cbd5e1;padding:2rem 0 1rem;margin-top:2rem}
.footer .wrap{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.footer h4{color:#fff;font-size:.95rem;margin-bottom:.5rem}
.footer p,.footer a{font-size:.85rem;color:#94a3b8;line-height:1.6}
.footer a:hover{color:var(--a2)}
.footer .icp{border-top:1px solid rgba(255,255,255,.1);margin-top:1.5rem;padding-top:1rem;text-align:center;font-size:.8rem;color:#64748b}
.footer .links a{display:inline-block;margin-right:.8rem}

/* Breadcrumb */
.bc{font-size:.82rem;color:var(--m);margin:.75rem 0}
.bc a{color:var(--a)}
.bc span{margin:0 .3rem}

/* Case Grid */
.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.25rem;margin:1.5rem 0}
.case-item{background:var(--bg2);border:1px solid var(--r);border-radius:8px;overflow:hidden}
.case-item .info{padding:1rem}
.case-item h3{font-size:.95rem;margin:0 0 .3rem;color:var(--c)}
.case-item p{font-size:.82rem;color:var(--m)}
.case-item .tag{display:inline-block;background:var(--bg);padding:.1rem .5rem;border-radius:3px;font-size:.75rem;color:var(--m);margin-right:.3rem}

/* FAQ */
.faq{margin:1rem 0}
.faq details{border:1px solid var(--r);border-radius:8px;margin-bottom:.5rem;background:var(--bg2)}
.faq summary{padding:.85rem 1rem;cursor:pointer;font-weight:600;color:var(--c);font-size:.92rem}
.faq summary:hover{background:var(--bg)}
.faq .answer{padding:0 1rem .85rem;font-size:.88rem;color:var(--m)}

/* CTA */
.cta{background:var(--c);color:#fff;text-align:center;padding:2.5rem 1rem;border-radius:10px;margin:1.5rem 0}
.cta h3{color:#fff;margin:0 0 .5rem}
.cta p{opacity:.9;font-size:.92rem}
.cta .btn{display:inline-block;background:var(--a2);color:#fff;padding:.6rem 1.5rem;border-radius:6px;font-weight:600;margin-top:.75rem;font-size:.92rem}
.cta .btn:hover{text-decoration:none;background:#0ea271}

/* Contact */
.contact-info{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1.5rem 0}
.contact-item{background:var(--bg2);border:1px solid var(--r);border-radius:8px;padding:1.25rem}
.contact-item h3{font-size:.95rem;color:var(--c);margin:0 0 .4rem}
.contact-item p{font-size:.88rem;color:var(--m);line-height:1.8}

@media(max-width:768px){
  .nav .wrap{height:auto;padding:.5rem 0}
  .nav ul{width:100%;justify-content:center;padding:.3rem 0}
  .footer .wrap{grid-template-columns:1fr}
  .contact-info{grid-template-columns:1fr}
  .hero h1{font-size:1.4rem}
}