/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;background:#FAF8F5;color:#1A1A2E;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* ===== Navbar ===== */
.navbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid #E5DFD5}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 16px;height:60px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#1B3A5C;font-weight:700;font-size:16px;white-space:nowrap}
.nav-logo svg{flex-shrink:0}
.nav-links{display:none;gap:28px}
.nav-links a{text-decoration:none;color:#5A6B7F;font-size:15px;font-weight:500;transition:color .2s;padding-bottom:4px}
.nav-links a:hover,.nav-links a.active{color:#1B3A5C}
.nav-links a.active{border-bottom:2px solid #1B3A5C}
.nav-phone{display:none;color:#5A6B7F;font-size:14px}
.nav-toggle{display:block;background:none;border:none;font-size:24px;cursor:pointer;color:#1A1A2E;padding:4px}
.nav-toggle svg{display:block}
.mobile-menu{display:none;flex-direction:column;background:#fff;border-bottom:1px solid #E5DFD5;padding:8px 16px}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 0;text-decoration:none;color:#5A6B7F;font-size:15px;border-bottom:1px solid #f0f0f0}
.mobile-menu a:last-child{border:none}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#1B3A5C 0%,#0F2440 100%);padding:48px 16px}
.hero-inner{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:32px}
.hero-text{flex:1;text-align:center}
.hero-badge{display:inline-block;padding:5px 16px;border-radius:20px;background:rgba(184,134,11,.2);color:#B8860B;font-size:13px;font-weight:500;margin-bottom:16px}
.hero h1{font-size:28px;line-height:1.2;font-weight:700;color:#fff;margin-bottom:12px}
.hero-desc{font-size:15px;color:rgba(255,255,255,.7);line-height:1.7;margin-bottom:24px;max-width:480px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.btn-primary{display:inline-block;padding:12px 28px;background:#B8860B;color:#fff;border-radius:8px;font-weight:600;text-decoration:none;transition:background .2s;font-size:15px;border:none;cursor:pointer}
.btn-primary:hover{background:#9A6F0A}
.btn-outline{display:inline-block;padding:12px 28px;border:1.5px solid rgba(255,255,255,.4);color:#fff;border-radius:8px;font-weight:600;text-decoration:none;transition:border-color .2s;font-size:15px}
.btn-outline:hover{border-color:rgba(255,255,255,.8)}
.hero-img{flex:1;width:100%;max-width:500px}
.hero-img img{width:100%;border-radius:12px;display:block}

/* ===== Section ===== */
.section{padding:48px 16px}
.section-light{background:#fff}
.container{max-width:1200px;margin:0 auto}
.sec-title{text-align:center;margin-bottom:40px}
.sec-title h2{font-size:24px;font-weight:700;margin-bottom:8px}
.sec-title p{color:#5A6B7F;font-size:15px;max-width:560px;margin:0 auto}

/* ===== Biz Grid ===== */
.biz-grid{display:grid;grid-template-columns:1fr;gap:16px}
.biz-card{display:block;background:#fff;border-radius:12px;border:1px solid #E5DFD5;overflow:hidden;transition:transform .2s,box-shadow .2s;text-decoration:none;color:inherit}
.biz-card:hover{transform:translateY(-2px);box-shadow:0 6px 24px rgba(0,0,0,.06)}
.biz-card-img{width:100%;height:180px;object-fit:cover;display:block}
.biz-card-body{padding:16px}
.biz-card-body h3{font-size:17px;font-weight:600;margin-bottom:6px;color:#1A1A2E}
.biz-card-body p{font-size:13px;color:#5A6B7F;line-height:1.6}

/* ===== Advantages ===== */
.adv-grid{display:grid;grid-template-columns:1fr;gap:32px}
.adv-item{text-align:center;padding:0 8px}
.adv-icon{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.adv-icon.q{background:rgba(45,106,79,.1);color:#2D6A4F}
.adv-icon.p{background:rgba(184,134,11,.1);color:#B8860B}
.adv-icon.s{background:rgba(27,58,92,.1);color:#1B3A5C}
.adv-icon svg{width:28px;height:28px}
.adv-item h3{font-size:17px;font-weight:600;margin-bottom:8px}
.adv-item p{font-size:14px;color:#5A6B7F;line-height:1.7}

/* ===== CTA ===== */
.cta{background:linear-gradient(135deg,rgba(15,36,64,.93),rgba(15,36,64,.9)),url(../images/cta-banner.jpg) center/cover no-repeat;padding:48px 16px;text-align:center}
.cta h2{font-size:22px;font-weight:700;color:#fff;margin-bottom:10px}
.cta p{color:rgba(255,255,255,.7);max-width:560px;margin:0 auto 24px;font-size:15px}
.cta .btn-primary{font-size:16px;padding:14px 36px}

/* ===== Footer ===== */
.footer{background:#0F2440;color:rgba(255,255,255,.55);padding:40px 16px 24px}
.footer-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:28px}
.footer-grid h4{color:#fff;font-weight:600;margin-bottom:12px;font-size:15px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{color:rgba(255,255,255,.6);text-decoration:none;font-size:14px;transition:color .2s}
.footer-links a:hover{color:#fff}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-contact div{display:flex;align-items:center;gap:8px}
.footer-bottom{max-width:1200px;margin:24px auto 0;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:13px}
.footer-beian{display:inline-flex;align-items:center;gap:4px;color:rgba(255,255,255,.6);text-decoration:none;font-size:13px;transition:color .2s}
.footer-beian:hover{color:#fff}
.beian-icon{width:14px;height:14px;flex-shrink:0;display:inline-block}

/* ===== WeChat Float ===== */
.wx-float{position:fixed;bottom:24px;right:24px;z-index:200;display:flex;flex-direction:column;align-items:flex-end;gap:8px}
.wx-popup{display:none;background:#fff;border-radius:12px;padding:14px;box-shadow:0 8px 30px rgba(0,0,0,.15);text-align:center;font-size:13px;color:#5A6B7F}
.wx-popup.show{display:block}
.wx-popup-qr{width:130px;height:130px;border-radius:8px;background:#f0fdf4;display:flex;align-items:center;justify-content:center;margin:0 auto 8px;font-size:12px;color:#999}
.wx-btn{width:52px;height:52px;border-radius:50%;background:#07C160;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 14px rgba(7,193,96,.3);transition:transform .2s}
.wx-btn:hover{transform:scale(1.1)}
.wx-btn svg{width:26px;height:26px;fill:#fff}

/* ===== Scroll Reveal ===== */
@media(prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
  .reveal.visible{opacity:1;transform:translateY(0)}
}

/* ===== Responsive ===== */
@media(min-width:500px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
}

@media(min-width:768px){
  .nav-links{display:flex}
  .nav-phone{display:block}
  .nav-toggle{display:none}
  .hero{padding:72px 32px}
  .hero-inner{flex-direction:row}
  .hero-text{text-align:left}
  .hero-btns{justify-content:flex-start}
  .hero h1{font-size:38px}
  .hero-desc{font-size:16px}
  .section{padding:64px 32px}
  .sec-title h2{font-size:30px}
  .adv-grid{grid-template-columns:repeat(3,1fr)}
  .cta{padding:56px 32px}
  .cta h2{font-size:28px}
  .footer-grid{grid-template-columns:repeat(3,1fr)}
}

@media(min-width:900px){
  .biz-grid{grid-template-columns:repeat(3,1fr)}
}

@media(min-width:1024px){
  .hero h1{font-size:44px}
}
/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.55);display:none;align-items:flex-start;justify-content:center;padding:40px 16px 80px;overflow-y:auto}
.modal-overlay.open{display:flex}
.modal{background:#fff;border-radius:14px;width:100%;max-width:820px;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.2);overflow:hidden}
.modal-close{position:absolute;top:12px;right:16px;width:36px;height:36px;border-radius:50%;border:none;background:#f0f0f0;font-size:22px;color:#666;cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:10;transition:background .2s;line-height:1}
.modal-close:hover{background:#e0e0e0}
.modal-body{padding:32px 24px}
.modal-title{font-size:22px;font-weight:700;color:#1B3A5C;margin-bottom:24px;padding-bottom:16px;border-bottom:2px solid #f0f0f0}

/* Detail */
.detail-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:20px}
.detail-grid-3{grid-template-columns:1fr}
.detail-col h3{font-size:15px;font-weight:600;color:#1B3A5C;margin-bottom:10px}
.detail-col p{font-size:14px;color:#5A6B7F;line-height:1.7;margin-bottom:10px}
.detail-col table{width:100%;border-collapse:collapse;font-size:13px}
.detail-col table th,.detail-col table td{padding:8px 10px;text-align:left;border-bottom:1px solid #eee}
.detail-col table th{background:#FAF8F5;color:#1B3A5C;font-weight:600;font-size:12px}
.detail-col table td{color:#5A6B7F}
.detail-note{font-size:13px;color:#888;border-top:1px solid #f0f0f0;padding-top:16px;margin-top:4px;line-height:1.7}

.detail-list{display:flex;flex-direction:column;gap:16px;margin-bottom:20px}
.detail-item{border-bottom:1px solid #f0f0f0;padding-bottom:14px}
.detail-item:last-child{border:none;padding-bottom:0}
.detail-item h3{font-size:16px;font-weight:600;color:#1B3A5C;margin-bottom:6px}
.detail-item p{font-size:14px;color:#5A6B7F;line-height:1.7}

.detail-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.gallery-img{width:100%;border-radius:8px;object-fit:cover;aspect-ratio:4/3}

@media(min-width:600px){
  .detail-grid{grid-template-columns:repeat(2,1fr)}
  .detail-grid-3{grid-template-columns:repeat(3,1fr)}
  .modal-body{padding:36px 32px}
  .detail-gallery{grid-template-columns:repeat(3,1fr)}
}

@media(min-width:768px){
  .modal-overlay{align-items:center;padding:40px}
  .modal-body{padding:40px}
  .modal-title{font-size:26px}
}