/* ============================================================
   方大远成钢板 — 汽车悬架弹簧专业制造商
   广州市铭宇汽车配件有限公司
   参照: fawlt.com 富奥辽弹
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0b2b4a;--blue:#0d3b66;--red:#c41230;--red-hover:#a00d28;
  --white:#fff;--bg:#f5f5f5;--gray:#666;--light:#999;--border:#e0e0e0;
  --dark:#222;--radius:4px;--shadow:0 2px 12px rgba(0,0,0,.06);
  --max-w:1200px;--font:'Microsoft YaHei','PingFang SC','Helvetica Neue',Arial,sans-serif
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--dark);line-height:1.8}
a{color:var(--blue);text-decoration:none}a:hover{color:var(--red)}
img{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-w);margin:0 auto;padding:0 16px}
ul{list-style:none}

/* Top bar */
.top-bar{background:#f0f0f0;border-bottom:1px solid var(--border);font-size:12px;color:var(--light);height:36px;line-height:36px}
.top-bar .container{display:flex;justify-content:space-between}
.top-bar a{color:var(--light);margin:0 6px}.top-bar a.active{color:var(--red);font-weight:600}

/* Language toggle button */
.lang-toggle{display:inline-flex;align-items:center;gap:4px;cursor:pointer;background:none;border:1px solid #ccc;border-radius:3px;padding:3px 10px;font-size:12px;color:var(--gray);font-family:var(--font);transition:.2s;line-height:1.5}
.lang-toggle:hover{color:var(--red);border-color:var(--red)}
.lang-toggle .globe{font-size:13px}

/* Header */
.site-header{background:var(--white);box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:82px}
.header-left{display:flex;align-items:center;gap:14px}
.logo-box{width:56px;height:56px;background:var(--navy);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--white);font-size:22px;font-weight:700;flex-shrink:0}
.header-info h1{font-size:20px;color:var(--navy);font-weight:700;line-height:1.3}
.header-info .sub{font-size:12px;color:var(--gray)}
.header-info .en{font-size:11px;color:var(--light)}

.nav-links{display:flex;gap:2px}
.nav-links>li{position:relative}
.nav-links>li>a{display:block;padding:10px 18px;font-size:15px;font-weight:600;color:var(--dark);transition:.15s;white-space:nowrap}
.nav-links>li>a:hover,.nav-links>li>a.active{color:var(--red);background:#fff5f5;border-radius:4px}
.nav-links .dropdown{display:none;position:absolute;top:100%;left:0;background:var(--white);min-width:150px;box-shadow:0 6px 18px rgba(0,0,0,.1);border-radius:var(--radius);z-index:10;padding:6px 0}
.nav-links li:hover .dropdown{display:block}
.nav-links .dropdown a{display:block;padding:8px 18px;font-size:13px;color:var(--dark)}
.nav-links .dropdown a:hover{background:#fff5f5;color:var(--red)}

.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{display:block;width:26px;height:2px;background:var(--navy)}
@media(max-width:900px){
  .hamburger{display:flex}
  .nav-links{display:none;position:absolute;top:82px;left:0;right:0;background:var(--white);flex-direction:column;padding:8px 16px;box-shadow:0 8px 16px rgba(0,0,0,.1)}
  .nav-links.open{display:flex}
  .nav-links .dropdown{position:static;box-shadow:none;padding-left:16px;display:none}
  .nav-links li.open .dropdown{display:block}
}

/* ====== HERO SLIDER ====== */
.hero-slider{position:relative;width:100%;height:500px;overflow:hidden;background:var(--navy)}
.hero-slider .slide{position:absolute;inset:0;opacity:0;transition:opacity .8s}
.hero-slider .slide.active{opacity:1}
.hero-slider .slide img{width:100%;height:100%;object-fit:cover}
.hero-slider .slide .overlay{position:absolute;inset:0;background:linear-gradient(to right,rgba(0,0,0,.6) 0%,rgba(0,0,0,.1) 100%)}
.hero-slider .slide .caption{position:absolute;top:50%;left:10%;transform:translateY(-50%);color:var(--white);z-index:2;max-width:500px}
.hero-slider .slide .caption h2{font-size:38px;font-weight:700;line-height:1.2;margin-bottom:14px}
.hero-slider .slide .caption h2 span{color:#ff6b6b}
.hero-slider .slide .caption .en{font-size:15px;color:#ccd;margin-bottom:16px;letter-spacing:1px}
.hero-slider .slide .caption p{font-size:15px;color:#ddd;line-height:1.8;margin-bottom:24px}
.hero-slider .dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-slider .dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s}
.hero-slider .dots span.active{background:var(--red);width:30px;border-radius:6px}
@media(max-width:768px){
  .hero-slider{height:380px}
  .hero-slider .slide .caption{left:5%;right:5%}
  .hero-slider .slide .caption h2{font-size:26px}
}

/* ====== BUTTONS ====== */
.btn{display:inline-block;padding:10px 28px;border-radius:2px;font-weight:600;font-size:14px;cursor:pointer;border:none;transition:.2s;text-align:center}
.btn-red{background:var(--red);color:var(--white)}.btn-red:hover{background:var(--red-hover);color:var(--white)}
.btn-outline{border:1px solid rgba(255,255,255,.5);color:var(--white);background:transparent}.btn-outline:hover{background:var(--white);color:var(--navy)}
.btn-border{border:1px solid var(--red);color:var(--red);background:var(--white)}.btn-border:hover{background:var(--red);color:var(--white)}
.btn-more{display:inline-block;padding:8px 20px;border:1px solid var(--border);color:var(--gray);font-size:13px;border-radius:2px}.btn-more:hover{border-color:var(--red);color:var(--red)}.btn-more::after{content:' +'}

/* ====== SECTIONS ====== */
.section{padding:56px 0}.section-white{background:var(--white)}
.section-hd{text-align:center;margin-bottom:36px}
.section-hd h2{font-size:24px;color:var(--navy);font-weight:700}
.section-hd .en{font-size:13px;color:var(--light);margin-top:4px}
.section-hd .sub{font-size:14px;color:var(--gray);margin-top:8px}

/* ====== INTRO 3-COL ====== */
.intro-grid{display:grid;grid-template-columns:1.2fr 2fr 1fr;gap:20px}
.intro-card{background:var(--white);padding:24px;border-radius:var(--radius);box-shadow:var(--shadow)}
.intro-card h3{font-size:16px;color:var(--navy);margin-bottom:12px;padding-bottom:10px;border-bottom:2px solid var(--red)}
.intro-card p{font-size:13px;color:var(--gray);line-height:1.9}
.intro-card .info-line{font-size:13px;color:var(--dark);margin-bottom:6px}
.intro-card .info-line em{color:var(--red);font-style:normal;font-weight:600}
.intro-slider{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);min-height:280px;display:flex;align-items:center;justify-content:center}
.intro-slider img{width:100%;min-height:280px;object-fit:cover}
@media(max-width:860px){.intro-grid{grid-template-columns:1fr}}

/* ====== PRODUCT CARDS ====== */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:18px}
.prod-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.2s;text-align:center}
.prod-card:hover{border-color:var(--red);box-shadow:0 4px 16px rgba(196,18,48,.08);transform:translateY(-2px)}
.prod-card .img-box{height:180px;background:#fafafa;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border);overflow:hidden}
.prod-card .img-box img{width:100%;height:100%;object-fit:cover}
.prod-card .info{padding:14px 12px}
.prod-card .info h4{font-size:14px;color:var(--dark);margin-bottom:4px}
.prod-card .info .en{font-size:11px;color:var(--red)}

/* ====== STATS ====== */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat-box{background:var(--white);padding:28px 16px;text-align:center;border-radius:var(--radius);box-shadow:var(--shadow);border-top:3px solid var(--red)}
.stat-box .num{font-size:34px;color:var(--red);font-weight:800}
.stat-box .label{font-size:13px;color:var(--gray);margin-top:4px}
@media(max-width:640px){.stats-row{grid-template-columns:repeat(2,1fr)}}

/* ====== CERT ====== */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;text-align:center}
.cert-card{background:var(--white);padding:20px 16px;border-radius:var(--radius);box-shadow:var(--shadow)}
.cert-card .icon{font-size:40px;margin-bottom:8px}
.cert-card p{font-size:13px;color:var(--navy);font-weight:600;line-height:1.5}

/* ====== GALLERY ====== */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.gallery-grid .item{background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);transition:.2s;cursor:pointer}
.gallery-grid .item:hover{border-color:var(--red)}
.gallery-grid .item img{width:100%;height:190px;object-fit:cover}
.gallery-grid .item p{padding:10px 12px;font-size:13px;color:var(--gray);text-align:center}

/* ====== PAGE BANNER ====== */
.page-banner{background:linear-gradient(135deg,var(--navy),var(--blue));color:var(--white);padding:40px 0}
.page-banner h2{font-size:24px}

/* ====== SIDEBAR + MAIN ====== */
.page-layout{display:grid;grid-template-columns:220px 1fr;gap:24px}
.sidebar{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;align-self:start}
.sidebar .side-title{background:var(--navy);color:var(--white);padding:14px 18px;font-size:15px;font-weight:600}
.sidebar .side-menu a{display:block;padding:10px 18px;font-size:13px;color:var(--dark);border-left:3px solid transparent;border-bottom:1px solid #f5f5f5;transition:.15s}
.sidebar .side-menu a:hover,.sidebar .side-menu a.active{background:#fff5f5;color:var(--red);border-left-color:var(--red)}
@media(max-width:768px){.page-layout{grid-template-columns:1fr}.sidebar{display:none}}

/* ====== PRODUCT LIST ====== */
.prod-list{display:flex;flex-direction:column;gap:14px}
.prod-row{display:flex;gap:18px;background:var(--white);padding:16px;border:1px solid var(--border);border-radius:var(--radius);transition:.2s;align-items:center}
.prod-row:hover{border-color:var(--red)}
.prod-row .thumb{width:180px;height:130px;flex-shrink:0;background:#fafafa;border-radius:4px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.prod-row .thumb img{width:100%;height:100%;object-fit:cover}
.prod-row .detail{flex:1}
.prod-row .detail h4{font-size:15px;color:var(--dark);margin-bottom:4px}
.prod-row .detail p{font-size:13px;color:var(--gray)}
.prod-row .detail .tags{margin-top:6px}
.prod-row .detail .tags span{display:inline-block;padding:2px 10px;background:#fff0f0;color:var(--red);font-size:11px;border-radius:20px;margin-right:6px}

/* ====== PRODUCT DETAIL ====== */
.detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.detail-gallery{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;min-height:350px}
.detail-gallery img{width:100%;height:100%;object-fit:cover;min-height:350px}
.detail-info h2{font-size:22px;color:var(--navy);margin-bottom:8px;padding-bottom:10px;border-bottom:2px solid var(--red)}
.detail-info .desc{font-size:14px;color:var(--gray);margin:14px 0;line-height:1.9}
.info-table{width:100%;border-collapse:collapse;margin-bottom:18px}
.info-table th,.info-table td{padding:9px 12px;font-size:13px;border:1px solid var(--border)}
.info-table th{background:#fafafa;text-align:right;width:100px;color:var(--navy);font-weight:600}
.info-table td{color:var(--gray)}
@media(max-width:768px){.detail-layout{grid-template-columns:1fr}}

/* ====== ABOUT ====== */
.about-content{background:var(--white);padding:30px;border-radius:var(--radius);box-shadow:var(--shadow)}
.about-content h3{font-size:18px;color:var(--navy);margin-bottom:12px;padding-left:12px;border-left:3px solid var(--red)}
.about-content h4{font-size:15px;color:var(--navy);margin:16px 0 8px}
.about-content p{font-size:14px;color:var(--gray);line-height:1.9;text-indent:2em}
.timeline{margin:20px 0}
.timeline .item{display:flex;gap:16px;margin-bottom:14px;align-items:baseline}
.timeline .year{font-size:16px;font-weight:700;color:var(--red);min-width:70px;flex-shrink:0}
.timeline .text{font-size:14px;color:var(--gray)}

/* ====== CONTACT ====== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-box{background:var(--white);padding:28px;border-radius:var(--radius);box-shadow:var(--shadow)}
.contact-box h3{font-size:18px;color:var(--navy);margin-bottom:18px;padding-bottom:8px;border-bottom:2px solid var(--red)}
.contact-box .info-line{font-size:14px;color:var(--dark);margin-bottom:10px;display:flex;gap:8px}
.contact-box .info-line strong{color:var(--navy);min-width:65px;flex-shrink:0}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:13px;color:var(--dark);font-weight:600;margin-bottom:4px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:3px;font-size:13px;font-family:var(--font);transition:.2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(196,18,48,.06)}
.form-group textarea{min-height:110px;resize:vertical}
.form-status{margin-top:10px;padding:10px;border-radius:4px;font-size:13px;display:none}
.form-status.success{display:block;background:#e8f5e9;color:#2e7d32}
.form-status.error{display:block;background:#ffebee;color:#c62828}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr}}

/* ====== CTA BAR ====== */
.cta-bar{background:var(--red);color:var(--white);padding:32px 0;text-align:center}
.cta-bar h3{font-size:20px;margin-bottom:6px}
.cta-bar p{font-size:13px;opacity:.85;margin-bottom:14px}
.cta-bar a{display:inline-block;background:var(--white);color:var(--red);padding:10px 32px;border-radius:2px;font-weight:700;font-size:14px}
.cta-bar a:hover{background:#ffe0e0}

/* ====== FOOTER ====== */
.site-footer{background:#1a1f2b;color:#999;padding:44px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px;margin-bottom:28px}
.footer-grid h4{color:var(--white);font-size:14px;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid #333}
.footer-grid a{font-size:13px;color:#999;line-height:2.2;display:block}.footer-grid a:hover{color:var(--red)}
.footer-grid p{font-size:13px;color:#999;line-height:2}
.footer-bottom{border-top:1px solid #333;padding-top:16px;text-align:center;font-size:12px;color:#666}

/* ====== WHATSAPP ====== */
.whatsapp-float{position:fixed;bottom:24px;right:24px;z-index:200;width:52px;height:52px;border-radius:50%;background:#25D366;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(37,211,102,.4);transition:.25s}
.whatsapp-float:hover{transform:scale(1.1)}

/* ====== LIGHTBOX ====== */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:300;align-items:center;justify-content:center;cursor:pointer}
.lightbox.open{display:flex}
.lightbox img{max-width:90vw;max-height:90vh;border-radius:4px}
.lightbox .close-btn{position:absolute;top:16px;right:28px;font-size:40px;color:#fff;cursor:pointer;background:none;border:none}

/* ====== BREADCRUMB ====== */
.breadcrumb{font-size:13px;color:var(--light);padding:14px 0}
.breadcrumb a{color:var(--gray)}.breadcrumb a:hover{color:var(--red)}