/* ========================================
   Bokunhai BadouCMS — Sengoog-Inspired Dark/Green Theme
   ======================================== */

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --dark:#111;--darker:#0a0a0a;--accent:#aac41a;--accent-hover:#98b015;
  --bg:#fff;--bg-alt:#f5f5f5;--bg-light:#fafafa;
  --text:#222;--text-secondary:#666;--text-light:#999;--text-white:#fff;
  --border:#e5e5e5;--border-light:#eee;
  --radius-sm:4px;--radius-md:8px;--radius-lg:16px;--radius-xl:24px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.06);
  --shadow-md:0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:0 8px 32px rgba(0,0,0,.12);
  --t:.3s cubic-bezier(.25,.1,.25,1);
  --max-width:1280px;
}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased
}
a{color:var(--text);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:var(--max-width);margin:0 auto;padding:0 32px}
.text-center{text-align:center}
.section{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--dark);color:var(--text-white)}

/* Header */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(17,17,17,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo a{display:flex;align-items:center}
.logo img{height:36px;width:auto}
.navbar ul{display:flex;gap:0}
.navbar>ul>li{position:relative}
.navbar>ul>li>a{
  display:block;font-size:.8125rem;font-weight:500;color:rgba(255,255,255,.75);
  padding:8px 18px;letter-spacing:.01em;transition:all .2s
}
.navbar>ul>li:hover>a,.navbar>ul>li.active>a{color:var(--accent)}
.navbar>ul>li>.submenu{
  display:none;position:absolute;top:100%;left:0;min-width:160px;
  background:#1a1a1a;border-radius:var(--radius-md);padding:8px 0;
  box-shadow:0 8px 24px rgba(0,0,0,.4);border:1px solid rgba(255,255,255,.08)
}
.navbar>ul>li:hover>.submenu{display:block}
.submenu li a{display:block;padding:8px 20px;font-size:.8125rem;color:rgba(255,255,255,.6);transition:all .2s}
.submenu li a:hover{color:var(--accent);background:rgba(255,255,255,.04)}
.header-actions{display:flex;align-items:center;gap:16px}
.lang-switcher a{font-size:.75rem;font-weight:600;color:rgba(255,255,255,.6);padding:5px 14px;border:1px solid rgba(255,255,255,.15);border-radius:20px;transition:all .2s}
.lang-switcher a:hover{color:var(--accent);border-color:var(--accent)}
.menu-btn{display:none;flex-direction:column;gap:5px;padding:8px;background:none;border:none;cursor:pointer}
.menu-btn span{display:block;width:22px;height:2px;background:rgba(255,255,255,.8);border-radius:2px;transition:all .2s}
@media(max-width:768px){
  .navbar{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(17,17,17,.98);backdrop-filter:blur(20px);padding:0;flex-direction:column;border-bottom:1px solid rgba(255,255,255,.06)}
  .navbar.open{display:flex}
  .navbar ul{flex-direction:column}
  .navbar>ul>li>a{padding:14px 32px;font-size:.9375rem;border-bottom:1px solid rgba(255,255,255,.04)}
  .navbar>ul>li>.submenu{position:static;background:transparent;box-shadow:none;border:none;padding-left:16px;display:block}
  .menu-btn{display:flex}
}

/* Hero */
.hero{position:relative;min-height:85vh;background:var(--dark);display:flex;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.3) 0%,rgba(0,0,0,.6) 100%)}
.hero-content{position:relative;z-index:1;text-align:center;padding-top:64px;max-width:800px;margin:0 auto}
.hero-eyebrow{display:inline-block;font-size:.8125rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:20px;border-bottom:2px solid var(--accent);padding-bottom:10px}
.hero h1{font-size:clamp(2rem,6vw,3.75rem);font-weight:700;color:#fff;line-height:1.15;letter-spacing:-.02em;margin-bottom:20px}
.hero p{font-size:1.125rem;color:rgba(255,255,255,.65);max-width:560px;margin:0 auto 32px;line-height:1.7}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Slider dots */
.hero-dots{display:flex;justify-content:center;gap:10px;margin-top:40px}
.hero-dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.3);cursor:pointer;transition:all .2s}
.hero-dot.active{background:var(--accent);transform:scale(1.3)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.875rem;font-weight:600;padding:13px 32px;border-radius:0;transition:all .2s;letter-spacing:.02em;cursor:pointer;border:none;text-transform:uppercase}
.btn-primary{background:var(--accent);color:#111}
.btn-primary:hover{background:var(--accent-hover);color:#111;transform:translateY(-1px)}
.btn-outline{color:#fff;border:2px solid rgba(255,255,255,.25);background:transparent}
.btn-outline:hover{background:#fff;color:#111;border-color:#fff}
.btn-outline-dark{color:var(--text);border:2px solid var(--text);background:transparent}
.btn-outline-dark:hover{background:var(--text);color:#fff}
.btn-sm{padding:8px 20px;font-size:.75rem}

/* Section Header */
.section-header{margin-bottom:56px}
.section-eyebrow{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;border-bottom:2px solid var(--accent);padding-bottom:8px}
.section-header h2{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;letter-spacing:-.02em;margin-bottom:12px}
.section-header p{font-size:1rem;color:var(--text-secondary);max-width:560px}
.section-header.center{text-align:center}
.section-header.center p{margin:0 auto}
.section-header.light h2{color:#fff}
.section-header.light p{color:rgba(255,255,255,.5)}

/* Page Header */
.page-header{position:relative;padding:140px 0 64px;background:var(--dark);text-align:center;color:#fff;overflow:hidden}
.page-header-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.3}
.page-header-bg::after{content:"";position:absolute;inset:0;background:rgba(0,0,0,.5)}
.page-header .container{position:relative;z-index:1}
.page-header h1{font-size:clamp(1.75rem,5vw,2.5rem);font-weight:700;letter-spacing:-.02em}
.page-header p{font-size:1rem;opacity:.7;margin-top:12px;max-width:500px;margin-left:auto;margin-right:auto}
.page-main{padding:40px 0 80px}

/* Breadcrumb */
.breadcrumb{font-size:.75rem;color:var(--text-light);margin-bottom:32px;text-transform:uppercase;letter-spacing:.05em}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--accent)}

/* Filter Bar */
.filter-bar{display:flex;gap:0;flex-wrap:wrap;margin-bottom:40px;border-bottom:1px solid var(--border)}
.filter-btn{font-size:.8125rem;font-weight:600;padding:12px 24px;color:var(--text-light);letter-spacing:.04em;text-transform:uppercase;transition:all .2s;border-bottom:2px solid transparent;margin-bottom:-1px}
.filter-btn:hover{color:var(--text)}
.filter-btn.active{color:var(--dark);border-bottom-color:var(--accent)}

/* Product Grid */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:32px}
.product-card{background:var(--bg);border:1px solid var(--border-light);transition:all var(--t);display:block;position:relative;overflow:hidden}
.product-card:hover{border-color:var(--accent);box-shadow:var(--shadow-lg)}
.product-card-img{height:280px;overflow:hidden;background:var(--bg-alt);display:flex;align-items:center;justify-content:center}
.product-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.product-card:hover .product-card-img img{transform:scale(1.06)}
.product-card-body{padding:28px}
.card-category{font-size:.6875rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;display:block}
.product-card-body h3{font-size:1.25rem;font-weight:600;margin-bottom:10px;color:var(--text)}
.product-card-body p{font-size:.875rem;color:var(--text-secondary);line-height:1.7}
.card-arrow{display:inline-block;margin-top:16px;font-size:.75rem;font-weight:700;color:var(--accent);letter-spacing:.06em;text-transform:uppercase;transition:all .2s}
.product-card:hover .card-arrow{letter-spacing:.1em}

/* Product Detail */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.product-detail-visual{background:var(--bg-alt);min-height:440px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-detail-visual img{width:100%;height:100%;object-fit:cover}
.product-detail-info .card-category{font-size:.75rem;margin-bottom:16px}
.product-detail-info h1{font-size:2.25rem;font-weight:700;letter-spacing:-.02em;line-height:1.2;margin-bottom:16px}
.product-desc{font-size:1rem;color:var(--text-secondary);line-height:1.7;margin-bottom:32px}
/* Specs table */
.specs-table{width:100%;border-collapse:collapse;margin:32px 0}
.specs-table tr{border-bottom:1px solid var(--border-light)}
.specs-table td{padding:10px 0;font-size:.875rem}
.specs-table td:first-child{color:var(--text-light);width:140px;font-weight:500}
.specs-table td:last-child{font-weight:500}
.product-nav{margin-top:48px;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between;font-size:.875rem}
.product-nav a{color:var(--text-secondary)}
.product-nav a:hover{color:var(--accent)}

/* Features Grid */
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:32px}
.feature-card{padding:40px 32px;border:1px solid var(--border-light);transition:all var(--t)}
.feature-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md)}
.feature-icon{font-size:2rem;margin-bottom:20px;display:block}
.feature-card h3{font-size:1.0625rem;font-weight:600;margin-bottom:10px}
.feature-card p{font-size:.875rem;color:var(--text-secondary);line-height:1.7}
.section-dark .feature-card{border-color:rgba(255,255,255,.08)}
.section-dark .feature-card h3{color:#fff}
.section-dark .feature-card p{color:rgba(255,255,255,.5)}

/* About Section */
.about-preview{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-preview-img{height:500px;background-size:cover;background-position:center;position:relative}
.about-preview-img::after{content:"";position:absolute;top:16px;left:16px;right:-16px;bottom:-16px;border:2px solid var(--accent);z-index:-1}
.about-preview-text h2{font-size:2rem;font-weight:700;letter-spacing:-.02em;margin-bottom:20px}
.about-preview-text p{font-size:.9375rem;color:var(--text-secondary);line-height:1.8;margin-bottom:24px}

/* Stats */
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;text-align:center;margin:64px 0}
.stat-item{padding:48px 16px;border-right:1px solid var(--border-light)}
.stat-item:last-child{border-right:none}
.stat-number{font-size:2.75rem;font-weight:700;color:var(--accent);letter-spacing:-.02em}
.stat-label{font-size:.8125rem;color:var(--text-secondary);margin-top:8px;letter-spacing:.05em;text-transform:uppercase}

/* Values Grid */
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:32px}
.value-card{text-align:center;padding:48px 32px;border:1px solid var(--border-light);transition:all var(--t)}
.value-card:hover{border-color:var(--accent)}
.value-icon{font-size:2.25rem;margin-bottom:16px}
.value-card h3{font-size:1.0625rem;font-weight:600;margin-bottom:10px}
.value-card p{font-size:.875rem;color:var(--text-secondary);line-height:1.7}

/* News Grid */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:32px}
.news-card{display:block;border-bottom:1px solid var(--border-light);padding-bottom:24px;transition:all var(--t)}
.news-card:hover{border-bottom-color:var(--accent)}
.news-card-img{height:220px;overflow:hidden;margin-bottom:20px;background:var(--bg-alt)}
.news-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.news-card:hover .news-card-img img{transform:scale(1.04)}
.news-date{font-size:.75rem;color:var(--text-light);letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px;display:block}
.news-card h3{font-size:1.125rem;font-weight:600;line-height:1.4;margin-bottom:8px}
.news-card p{font-size:.875rem;color:var(--text-secondary);line-height:1.7}
.news-more{display:inline-block;margin-top:12px;font-size:.75rem;font-weight:700;color:var(--accent);letter-spacing:.06em;text-transform:uppercase}

/* Article Detail */
.article-detail{max-width:800px}
.article-header{margin-bottom:40px}
.article-header h1{font-size:2.25rem;font-weight:700;letter-spacing:-.02em;line-height:1.2;margin-bottom:20px}
.article-meta{display:flex;gap:20px;font-size:.8125rem;color:var(--text-light);letter-spacing:.04em;text-transform:uppercase;border-bottom:1px solid var(--border);padding-bottom:20px}
.article-body{font-size:1.0625rem;line-height:1.9}
.article-body p{margin-bottom:24px}
.article-body h2{font-size:1.5rem;font-weight:600;margin:40px 0 20px}
.article-body img{max-width:100%;margin:32px 0}
.article-nav{margin-top:56px;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.contact-info h3{font-size:1.375rem;font-weight:600;margin-bottom:32px}
.contact-item{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border-light)}
.ci-icon{font-size:1.25rem;color:var(--accent);flex-shrink:0;margin-top:2px}
.ci-label{font-size:.75rem;color:var(--text-light);letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.ci-value{font-size:.9375rem;font-weight:500}
.contact-form{background:var(--bg-alt);padding:40px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.8125rem;font-weight:600;margin-bottom:8px;letter-spacing:.03em;text-transform:uppercase}
.form-group input,.form-group textarea{
  width:100%;padding:14px 16px;border:1px solid var(--border);font-size:.9375rem;
  font-family:inherit;transition:border-color .2s;background:var(--bg)
}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent)}
.form-group textarea{min-height:140px;resize:vertical}
.captcha-group{display:flex;gap:12px}
.captcha-group input{flex:1}
.captcha-group img{height:46px;cursor:pointer;border:1px solid var(--border)}

/* Message List */
.message-list{margin-top:64px;padding-top:40px;border-top:1px solid var(--border)}
.message-list h3{font-size:1.25rem;font-weight:600;margin-bottom:32px}
.message-item{padding:24px;border:1px solid var(--border-light);margin-bottom:16px}
.message-header{display:flex;justify-content:space-between;margin-bottom:12px;font-size:.875rem}
.message-header span{color:var(--text-light);font-size:.75rem}
.message-item>p{font-size:.9375rem;line-height:1.7}
.message-reply{margin-top:16px;padding:16px;background:var(--bg);border-left:3px solid var(--accent)}
.message-reply p{margin-top:8px;font-size:.875rem}

/* CTA */
.cta-section{padding:100px 0}
.cta-section h2{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;color:#fff;margin-bottom:16px}
.cta-section p{font-size:1.0625rem;color:rgba(255,255,255,.5);margin-bottom:32px}

/* Pagination */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:48px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;font-size:.8125rem;font-weight:600;color:var(--text-light);border:1px solid var(--border-light);transition:all .2s;letter-spacing:.02em}
.pagination a:hover{border-color:var(--accent);color:var(--accent)}
.pagination .active{background:var(--accent);color:#111;border-color:var(--accent)}

/* Footer */
.footer{background:var(--darker);color:rgba(255,255,255,.5);padding:64px 0 0}
.footer-main{padding-bottom:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{font-size:.875rem;line-height:1.7;margin-top:12px}
.footer-col h4{font-size:.875rem;font-weight:600;color:#fff;margin-bottom:20px;letter-spacing:.03em;text-transform:uppercase}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{font-size:.8125rem;color:rgba(255,255,255,.4);transition:color .2s}
.footer-col ul li a:hover{color:var(--accent)}
.footer-contact li{font-size:.8125rem;margin-bottom:10px;display:flex;align-items:flex-start;gap:10px}
.footer-contact li span{flex-shrink:0;color:var(--accent)}
.footer-contact a{color:rgba(255,255,255,.4)}
.footer-contact a:hover{color:var(--accent)}
.footer-bottom{padding:24px 0;border-top:1px solid rgba(255,255,255,.06);font-size:.75rem;text-align:center}
.footer-bottom p{margin-bottom:4px}
.footer-bottom a{color:rgba(255,255,255,.3)}
.footer-bottom a:hover{color:var(--accent)}

/* Back to Top */
#backTop{position:fixed;bottom:40px;right:40px;width:44px;height:44px;background:var(--accent);color:#111;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.25rem;opacity:0;transition:all .3s;z-index:50}
#backTop.visible{opacity:1}

/* Responsive */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-stats{grid-template-columns:1fr 1fr}
  .stat-item:nth-child(2){border-right:none}
}
@media(max-width:768px){
  .container{padding:0 20px}
  .product-detail,.about-preview,.contact-grid{grid-template-columns:1fr;gap:40px}
  .product-detail-visual{min-height:300px}
  .about-preview-img{height:300px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .about-stats{grid-template-columns:1fr 1fr}
  .news-grid,.product-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.75rem}
  .article-header h1{font-size:1.75rem}
  .product-detail-info h1{font-size:1.75rem}
}
@media(max-width:480px){
  .about-stats{grid-template-columns:1fr}
  .stat-item{border-right:none;border-bottom:1px solid var(--border-light)}
  .stat-item:last-child{border-bottom:none}
  .hero{min-height:70vh}
}