/* ============================================================
   信众制动 XINZHONG BRAKE - 全新UI设计
   ============================================================ */

/* ===== 变量 ===== */
:root {
    --primary:      #C8102E;
    --primary-dark: #9E0B23;
    --primary-light:#FF3D5A;
    --dark:         #080808;
    --dark2:        #111111;
    --dark3:        #1A1A1A;
    --gray1:        #222;
    --gray2:        #333;
    --gray3:        #888;
    --white:        #FFFFFF;
    --accent:       #FFB800;
    --font:         'Inter','PingFang SC','Microsoft YaHei',sans-serif;
    --radius:       16px;
    --shadow:       0 8px 32px rgba(0,0,0,0.4);
}

/* ===== 重置 ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:var(--font);
    background:var(--dark);
    color:var(--white);
    line-height:1.6;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--dark2)}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}

/* ===== 语言切换器 ===== */
.lang-switcher{position:fixed;top:18px;right:18px;z-index:1000;font-family:var(--font)}
.lang-current{
    display:flex;align-items:center;gap:6px;
    padding:7px 14px;
    background:rgba(8,8,8,.88);
    backdrop-filter:blur(14px);
    border:1px solid rgba(255,255,255,.1);
    border-radius:50px;
    cursor:pointer;font-size:13px;color:#fff;
    transition:all .3s;user-select:none;
}
.lang-current:hover{background:rgba(200,16,46,.85);border-color:var(--primary)}
.lang-flag{font-size:16px}
.lang-name{font-weight:600}
.lang-arrow{font-size:9px;transition:transform .3s}
.lang-switcher.open .lang-arrow{transform:rotate(180deg)}
.lang-dropdown{
    display:none;
    position:absolute;top:calc(100%+8px);right:0;
    background:rgba(17,17,17,.97);
    backdrop-filter:blur(20px);
    border:1px solid rgba(255,255,255,.08);
    border-radius:14px;overflow:hidden;
    min-width:140px;
    box-shadow:0 20px 60px rgba(0,0,0,.5);
}
.lang-switcher.open .lang-dropdown{display:block;animation:fadeDown .2s ease}
.lang-option{
    display:flex;align-items:center;gap:10px;
    padding:11px 18px;font-size:14px;font-weight:500;color:#bbb;
    transition:all .3s;
}
.lang-option:hover{background:rgba(200,16,46,.3);color:#fff}
.lang-option.active{background:rgba(200,16,46,.5);color:#fff}
.lang-option span{font-size:18px}
@keyframes fadeDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* ===== 按钮 ===== */
.btn{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 28px;
    font-size:14px;font-weight:700;border-radius:50px;
    transition:all .3s;cursor:pointer;border:none;font-family:var(--font);
    letter-spacing:.3px;
}
.btn--primary{background:var(--primary);color:#fff}
.btn--primary:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 12px 36px rgba(200,16,46,.4);
}
.btn--outline{
    background:transparent;color:#fff;
    border:2px solid rgba(255,255,255,.35);
}
.btn--outline:hover{
    background:rgba(255,255,255,.1);
    border-color:rgba(255,255,255,.7);
    transform:translateY(-2px);
}

/* ===== Section标题 ===== */
.section-head{text-align:center;margin-bottom:52px}
.section-head__label{
    display:inline-block;
    font-size:11px;font-weight:700;
    letter-spacing:3px;text-transform:uppercase;
    color:var(--primary);margin-bottom:10px;
}
.section-head__title{
    font-size:clamp(28px,4vw,44px);
    font-weight:900;letter-spacing:-1px;
    color:#fff;margin-bottom:12px;
}
.section-head__sub{font-size:15px;color:var(--gray3);max-width:560px;margin:0 auto;line-height:1.7}
.section-head--row{
    display:flex;align-items:flex-end;justify-content:space-between;
    text-align:left;margin-bottom:40px;
}
.section-head--row .section-head__title{font-size:clamp(22px,3vw,36px);margin-bottom:0}
.products__more{
    display:inline-flex;align-items:center;gap:8px;
    color:var(--primary);font-weight:700;font-size:14px;
    padding-bottom:4px;
    border-bottom:2px solid var(--primary);
    transition:all .3s;
}
.products__more:hover{gap:14px;color:var(--primary-light)}

/* ===== 头部 ===== */
.header{
    position:fixed;top:0;left:0;right:0;z-index:900;
    transition:background .4s,box-shadow .4s;
}
.header.scrolled{
    background:rgba(8,8,8,.94);
    backdrop-filter:blur(20px);
    box-shadow:0 2px 20px rgba(0,0,0,.5);
}
.header-inner{
    max-width:1280px;margin:0 auto;padding:0 24px;
    height:70px;display:flex;align-items:center;justify-content:space-between;
}
.logo{display:flex;align-items:center;gap:12px;z-index:901}
.logo-icon{
    width:42px;height:42px;background:var(--primary);
    color:#fff;font-weight:900;font-size:20px;
    border-radius:10px;display:flex;align-items:center;justify-content:center;
    letter-spacing:-1px;
}
.logo-text{font-weight:800;font-size:17px;letter-spacing:.5px}
.logo-sub{font-size:9px;font-weight:600;color:var(--gray3);letter-spacing:2px;display:block}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-size:14px;font-weight:500;color:rgba(255,255,255,.7);position:relative;padding:4px 0}
.nav a::after{
    content:'';position:absolute;bottom:-2px;left:0;
    width:0;height:2px;background:var(--primary);transition:width .3s;
}
.nav a:hover,.nav a.active{color:#fff}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav-cta{
    padding:9px 20px !important;background:var(--primary);
    border-radius:50px;color:#fff !important;font-size:13px !important;font-weight:600 !important;
}
.nav-cta::after{display:none !important}
.nav-cta:hover{background:var(--primary-dark) !important;transform:translateY(-1px)}
.menu-toggle{
    display:none;flex-direction:column;gap:5px;
    background:none;border:none;cursor:pointer;z-index:901;padding:8px;
}
.menu-toggle span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:all .3s}

/* ===== HERO ===== */
.hero{
    position:relative;height:100vh;min-height:680px;
    display:flex;align-items:center;overflow:hidden;
}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{
    width:100%;height:100%;object-fit:cover;
    filter:brightness(.35);
    animation:heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom{from{transform:scale(1.05)}to{transform:scale(1.14)}}
.hero__overlay{
    position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(0,0,0,.7) 0%,rgba(0,0,0,.25) 55%,rgba(200,16,46,.12) 100%);
}
.hero__content{
    position:relative;z-index:1;
    max-width:1280px;margin:0 auto;padding:0 24px;padding-top:70px;
    animation:fadeUp .8s ease forwards;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}
.hero__badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:7px 16px;
    background:rgba(200,16,46,.2);
    border:1px solid rgba(200,16,46,.45);
    border-radius:50px;font-size:11px;font-weight:700;
    color:#FF8A9A;letter-spacing:1px;text-transform:uppercase;
    margin-bottom:24px;
}
.hero__badge-dot{
    width:6px;height:6px;border-radius:50%;
    background:var(--primary);
    animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.7)}}
.hero__title{
    display:flex;flex-direction:column;
    font-size:clamp(48px,7vw,90px);
    font-weight:900;line-height:1;letter-spacing:-3px;
    color:#fff;margin-bottom:24px;
}
.hero__title-line2{color:var(--primary)}
.hero__desc{
    max-width:540px;font-size:16px;line-height:1.75;
    color:rgba(255,255,255,.65);margin-bottom:40px;
}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__scroll-hint{
    position:absolute;bottom:36px;left:50%;transform:translateX(-50%);
    display:flex;flex-direction:column;align-items:center;gap:8px;
    font-size:9px;letter-spacing:3px;color:rgba(255,255,255,.3);
    z-index:1;
}
.hero__scroll-icon{
    width:30px;height:48px;border:2px solid rgba(255,255,255,.2);
    border-radius:15px;display:flex;align-items:center;justify-content:center;
}
.hero__scroll-icon i{font-size:10px;color:rgba(255,255,255,.3);animation:bounce 2s ease-in-out infinite}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
.hero__particles{
    position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden;
}
.hero__particles span{
    position:absolute;width:3px;height:3px;
    background:rgba(200,16,46,.4);border-radius:50%;
    animation:float 8s ease-in-out infinite;
}
.hero__particles span:nth-child(1){top:20%;left:15%;animation-delay:0s}
.hero__particles span:nth-child(2){top:60%;left:75%;animation-delay:2s}
.hero__particles span:nth-child(3){top:35%;left:85%;animation-delay:4s}
.hero__particles span:nth-child(4){top:75%;left:25%;animation-delay:6s}
@keyframes float{
    0%,100%{transform:translateY(0) scale(1);opacity:.4}
    50%{transform:translateY(-30px) scale(1.5);opacity:.8}
}

/* ===== STATS ===== */
.stats{
    background:var(--dark2);
    border-bottom:1px solid rgba(255,255,255,.05);
    padding:48px 0;
}
.stats__inner{
    display:flex;align-items:center;justify-content:center;
    gap:0;max-width:900px;margin:0 auto;
}
.stats__item{
    flex:1;text-align:center;padding:20px 32px;
}
.stats__icon{font-size:22px;color:var(--primary);margin-bottom:12px}
.stats__num{
    font-size:40px;font-weight:900;color:#fff;line-height:1;
    margin-bottom:6px;
}
.stats__num span{font-size:22px;color:var(--primary)}
.stats__label{font-size:11px;color:var(--gray3);text-transform:uppercase;letter-spacing:1.5px}
.stats__divider{width:1px;height:60px;background:rgba(255,255,255,.06)}

/* ===== BRANDS ===== */
.brands{padding:100px 0;background:var(--dark)}
.brands__grid{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(140px,1fr));
    gap:14px;
}
.brand-item{
    background:var(--dark2);border:1px solid rgba(255,255,255,.05);
    border-radius:var(--radius);padding:30px 20px;
    text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;
    min-height:170px;transition:all .35s;
}
.brand-item:hover{
    background:var(--dark3);border-color:rgba(200,16,46,.5);
    transform:translateY(-5px);box-shadow:0 16px 40px rgba(200,16,46,.15);
}
.brand-item__name{font-size:16px;font-weight:700;color:#fff;letter-spacing:1px}

/* ===== FEATURES ===== */
.features{padding:100px 0;background:var(--dark2)}
.features__grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:18px;
}
.feat-card{
    background:var(--gray1);border:1px solid rgba(255,255,255,.04);
    border-radius:var(--radius);padding:32px 24px;
    transition:all .35s;display:flex;flex-direction:column;gap:16px;
}
.feat-card:hover{
    border-color:rgba(200,16,46,.4);
    transform:translateY(-5px);
    box-shadow:0 20px 50px rgba(0,0,0,.35);
}
.feat-card__icon{
    width:52px;height:52px;
    background:rgba(200,16,46,.12);
    border-radius:12px;display:flex;align-items:center;justify-content:center;
    font-size:22px;color:var(--primary);
}
.feat-card__body h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:8px}
.feat-card__body p{font-size:13px;color:var(--gray3);line-height:1.7}
.feat-card--wide{grid-column:span 2}

/* ===== PRODUCTS ===== */
.products{padding:100px 0;background:var(--dark)}
.products__grid{
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
    gap:22px;
}
.products__empty{
    grid-column:1/-1;color:var(--gray3);text-align:center;
    padding:60px;font-size:15px;
}
.prod-card{
    background:var(--dark2);border:1px solid rgba(255,255,255,.05);
    border-radius:var(--radius);overflow:hidden;
    display:block;transition:all .35s;
}
.prod-card:hover{
    border-color:rgba(200,16,46,.4);
    transform:translateY(-6px);
    box-shadow:0 20px 56px rgba(0,0,0,.45);
}
.prod-card__photo{
    position:relative;height:200px;overflow:hidden;
}
.prod-card__photo img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .6s ease;
}
.prod-card:hover .prod-card__photo img{transform:scale(1.08)}
.prod-card__overlay{
    position:absolute;inset:0;
    background:rgba(0,0,0,.3);
    display:flex;align-items:center;justify-content:center;
    opacity:0;transition:opacity .35s;
}
.prod-card:hover .prod-card__overlay{opacity:1}
.prod-card__view{
    width:44px;height:44px;border-radius:50%;
    background:var(--primary);display:flex;align-items:center;justify-content:center;
}
.prod-card__view i{font-size:14px;color:#fff}
.prod-card__info{padding:18px 20px}
.prod-card__brand{
    display:flex;align-items:center;gap:6px;
    font-size:10px;text-transform:uppercase;letter-spacing:1.5px;
    color:var(--primary);font-weight:700;margin-bottom:6px;
}
.prod-card__dot{
    width:5px;height:5px;border-radius:50%;
    background:var(--primary);display:inline-block;
}
.prod-card__name{
    font-size:14px;font-weight:600;color:#fff;
    line-height:1.4;margin-bottom:8px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.prod-card__meta{
    display:flex;align-items:center;justify-content:space-between;gap:8px;
}
.prod-card__code{
    font-size:11px;color:var(--gray3);display:flex;align-items:center;gap:4px;
}
.prod-card__code i{color:var(--primary);font-size:10px}
.prod-card__pos{
    font-size:11px;color:var(--gray3);display:flex;align-items:center;gap:4px;
}
.prod-card__pos i{color:var(--primary);font-size:7px}

/* ===== ABOUT / CTA ===== */
.about-cta{position:relative;padding:110px 0;overflow:hidden}
.about-cta__bg{position:absolute;inset:0}
.about-cta__bg img{
    width:100%;height:100%;object-fit:cover;filter:brightness(.18);
}
.about-cta__overlay{
    position:absolute;inset:0;
    background:linear-gradient(135deg,rgba(200,16,46,.18) 0%,transparent 60%);
}
.about-cta__content{
    position:relative;z-index:1;
    display:flex;align-items:center;justify-content:space-between;gap:60px;
}
.about-cta__text{flex:1}
.about-cta__text h2{
    font-size:clamp(30px,4vw,54px);font-weight:900;
    letter-spacing:-1px;color:#fff;margin-bottom:16px;
}
.about-cta__text p{
    font-size:15px;color:rgba(255,255,255,.6);
    line-height:1.8;margin-bottom:32px;max-width:560px;
}
.about-cta__btns{display:flex;gap:14px;flex-wrap:wrap}
.about-cta__badges{
    display:flex;flex-direction:column;gap:16px;
    flex-shrink:0;
}
.cert-badge{
    display:flex;align-items:center;gap:16px;
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    border-radius:14px;padding:18px 24px;
    min-width:240px;
    transition:all .35s;
}
.cert-badge:hover{
    background:rgba(200,16,46,.1);
    border-color:rgba(200,16,46,.3);
}
.cert-badge i{
    font-size:24px;color:var(--primary);width:28px;text-align:center;
}
.cert-badge strong{display:block;font-size:15px;font-weight:800;color:#fff;margin-bottom:2px}
.cert-badge span{font-size:12px;color:var(--gray3)}

/* ===== FOOTER ===== */
.footer{background:#040404;border-top:1px solid rgba(255,255,255,.04);padding:56px 0 0}
.footer-grid{
    display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;
    padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.04);
}
.footer-brand .logo-icon{width:38px;height:38px;font-size:16px;margin-bottom:10px}
.footer-brand p{font-size:13px;color:var(--gray3);line-height:1.7;margin-top:10px}
.footer-col h4{
    font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;
    color:#fff;margin-bottom:18px;
}
.footer-col a{
    display:block;font-size:13px;color:var(--gray3);margin-bottom:10px;transition:all .3s;
}
.footer-col a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{padding:18px 0;text-align:center;font-size:12px;color:var(--gray3)}

/* ===== 产品列表页 ===== */
.page-hero{
    padding:140px 0 60px;
    background:linear-gradient(180deg,var(--dark2),var(--dark));text-align:center;
}
.page-hero h1{font-size:clamp(30px,5vw,52px);font-weight:900;color:#fff;margin-bottom:12px}
.page-hero p{color:var(--gray3);font-size:15px}

.brand-filter{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:48px}
.filter-btn{
    padding:8px 18px;border:1px solid rgba(255,255,255,.1);
    border-radius:50px;font-size:13px;font-weight:600;color:var(--gray3);
    background:transparent;cursor:pointer;transition:all .3s;
}
.filter-btn:hover,.filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}

.pagination{display:flex;justify-content:center;gap:8px;margin-top:56px}
.pagination a,.pagination span{
    padding:8px 15px;border:1px solid rgba(255,255,255,.08);
    border-radius:8px;font-size:14px;color:var(--gray3);transition:all .3s;
}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination .current{background:var(--primary);border-color:var(--primary);color:#fff}

/* ===== 产品详情页 ===== */
.detail-section{padding:120px 0 80px;background:var(--dark)}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.detail-image{
    background:var(--dark2);border-radius:var(--radius);overflow:hidden;
    aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;
}
.detail-image img{width:100%;height:100%;object-fit:cover}
.detail-info h1{font-size:30px;font-weight:800;color:#fff;margin-bottom:12px;letter-spacing:-.5px}
.detail-meta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.detail-badge{
    padding:6px 14px;
    background:rgba(200,16,46,.15);border:1px solid rgba(200,16,46,.3);
    border-radius:50px;font-size:12px;font-weight:600;color:var(--primary);
}
.detail-table{background:var(--dark2);border-radius:var(--radius);overflow:hidden;margin-bottom:24px}
.detail-table table{width:100%;border-collapse:collapse}
.detail-table td{padding:12px 16px;font-size:14px;border-bottom:1px solid rgba(255,255,255,.04)}
.detail-table td:first-child{color:var(--gray3);font-weight:600;width:110px}
.detail-table td:last-child{color:#fff}
.detail-models{background:var(--dark2);border-radius:var(--radius);padding:20px;margin-bottom:24px}
.detail-models h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px}
.detail-models p{font-size:13px;color:var(--gray3);line-height:1.8}
.detail-actions{display:flex;gap:12px}
.btn-inquiry{
    flex:1;padding:14px;background:var(--primary);border:none;
    border-radius:12px;color:#fff;font-size:15px;font-weight:700;
    cursor:pointer;transition:all .3s;text-align:center;font-family:var(--font);
}
.btn-inquiry:hover{background:var(--primary-dark);transform:translateY(-2px)}

/* ===== 联系页 ===== */
.contact-section{padding:120px 0 80px;background:var(--dark)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.contact-info-card{background:var(--dark2);border-radius:var(--radius);padding:36px}
.contact-info-card h3{font-size:22px;font-weight:800;color:#fff;margin-bottom:12px}
.contact-info-card p{color:var(--gray3);font-size:14px;line-height:1.7;margin-bottom:28px}
.contact-item{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px}
.contact-item i{
    width:40px;height:40px;background:rgba(200,16,46,.15);
    border-radius:10px;display:flex;align-items:center;justify-content:center;
    color:var(--primary);font-size:15px;flex-shrink:0;
}
.contact-item div{font-size:14px}
.contact-item strong{display:block;color:#fff;margin-bottom:2px}
.contact-item span{color:var(--gray3)}

.contact-form{background:var(--dark2);border-radius:var(--radius);padding:36px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:13px;font-weight:600;color:rgba(255,255,255,.7);margin-bottom:8px}
.form-group input,.form-group textarea{
    width:100%;padding:12px 16px;background:var(--gray1);
    border:1px solid rgba(255,255,255,.08);border-radius:10px;
    color:#fff;font-size:14px;font-family:var(--font);transition:all .3s;
}
.form-group input:focus,.form-group textarea:focus{
    outline:none;border-color:var(--primary);background:rgba(200,16,46,.05);
}
.form-group textarea{height:120px;resize:vertical}
.btn-submit{
    width:100%;padding:14px;background:var(--primary);border:none;
    border-radius:12px;color:#fff;font-size:15px;font-weight:700;
    cursor:pointer;transition:all .3s;font-family:var(--font);
}
.btn-submit:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 30px rgba(200,16,46,.3)}

/* ===== 关于页 ===== */
.about-section{padding:120px 0 80px;background:var(--dark)}
.about-hero-text{
    font-size:clamp(17px,2.5vw,24px);font-weight:300;
    color:rgba(255,255,255,.65);line-height:1.8;
    max-width:800px;margin:0 auto 60px;text-align:center;
}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:80px}
.about-img{border-radius:var(--radius);overflow:hidden;height:360px}
.about-img img{width:100%;height:100%;object-fit:cover}
.about-text h2{font-size:26px;font-weight:800;color:#fff;margin-bottom:14px}
.about-text p{font-size:14px;color:var(--gray3);line-height:1.8;margin-bottom:10px}
.about-text ul{list-style:none;margin-top:16px}
.about-text ul li{
    font-size:14px;color:rgba(255,255,255,.7);padding:6px 0;padding-left:20px;position:relative;
}
.about-text ul li::before{
    content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:6px;height:6px;background:var(--primary);border-radius:50%;
}

/* ===== 产品列表(纯文字) ===== */
.products-list{display:flex;flex-direction:column;gap:8px}
.product-row{
    display:grid;grid-template-columns:140px 1fr 220px 120px 40px;
    align-items:center;padding:16px 24px;
    background:var(--dark2);border:1px solid rgba(255,255,255,.04);
    border-radius:12px;text-decoration:none;transition:all .3s;color:inherit;
}
.product-row:hover{
    background:var(--dark3);border-color:rgba(200,16,46,.4);transform:translateX(4px);
}
.product-row__brand{
    display:flex;align-items:center;gap:8px;
    font-size:12px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:1px;
}
.brand-dot{width:5px;height:5px;border-radius:50%;background:var(--primary);flex-shrink:0}
.product-row__name{font-size:14px;font-weight:600;color:#fff;padding-right:16px}
.product-row__code{font-size:12px;color:var(--gray3);display:flex;align-items:center;gap:4px}
.product-row__code i{color:var(--primary);font-size:11px}
.product-row__type{font-size:11px;color:var(--gray3);display:flex;align-items:center;gap:4px}
.product-row__type i{color:var(--primary);font-size:8px}
.product-row__arrow{color:var(--gray3);font-size:12px;transition:all .3s}
.product-row:hover .product-row__arrow{color:var(--primary);transform:translateX(4px)}

/* ===== 后台登录 ===== */
.admin-login{min-height:100vh;background:var(--dark2);display:flex;align-items:center;justify-content:center}
.admin-login .login-box{background:var(--gray1);border-radius:20px;padding:48px;width:400px;max-width:95vw}
.admin-login h1{color:#fff;font-size:24px;margin-bottom:32px;text-align:center}
.admin-login .form-group input{width:100%}

/* ===== 响应式 ===== */
@media(max-width:1024px){
    .features__grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr}
    .about-cta__content{flex-direction:column}
    .about-cta__badges{flex-direction:row;flex-wrap:wrap}
    .cert-badge{min-width:200px}
}
@media(max-width:768px){
    .nav{display:none}
    .nav.open{
        display:flex;flex-direction:column;
        position:fixed;top:0;left:0;right:0;bottom:0;
        background:rgba(8,8,8,.98);z-index:899;
        justify-content:center;align-items:center;gap:24px;
    }
    .nav.open a{font-size:20px}
    .menu-toggle{display:flex}
    .stats__inner{flex-wrap:wrap;gap:0}
    .stats__item{min-width:50%}
    .stats__divider{display:none}
    .features__grid{grid-template-columns:1fr}
    .feat-card--wide{grid-column:span 1}
    .products__grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .detail-grid{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .about-grid{grid-template-columns:1fr}
    .brands__grid{grid-template-columns:repeat(3,1fr)}
    .about-cta__badges{flex-direction:column}
    .cert-badge{min-width:unset;width:100%}
}
@media(max-width:480px){
    .hero__title{font-size:36px;letter-spacing:-1px}
    .stats__num{font-size:32px}
    .products__grid{grid-template-columns:1fr 1fr;gap:12px}
    .brands__grid{grid-template-columns:repeat(2,1fr)}
}

/* ===== HERO BADGES ===== */
.hero__badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero__badge-item{background:rgba(255,255,255,.15);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:10px 16px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px;transition:all .3s}
.hero__badge-item i{font-size:14px;color:#4ade80}
.hero__badge-item:hover{background:rgba(255,255,255,.25);transform:translateY(-2px)}

/* ===== CERTS SECTION ===== */
.certs{padding:100px 0;background:#fff}
.certs__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:50px}
.cert-card{background:#fff;border:1px solid #e5e5e5;border-radius:16px;overflow:hidden;transition:all .3s;box-shadow:0 2px 12px rgba(0,0,0,.05)}
.cert-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(0,0,0,.12);border-color:#c8102e}
.cert-card__preview{background:linear-gradient(135deg,#1a1a2e,#2d2d4a);height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.cert-card__preview i{font-size:42px;color:#c8102e}
.cert-card__preview span{color:#fff;font-size:18px;font-weight:700}
.cert-card__body{padding:24px}
.cert-card__body h3{font-size:16px;font-weight:700;color:#1a1a2e;margin-bottom:6px}
.cert-card__body p{font-size:13px;color:#888;margin-bottom:16px}
.cert-card__link{display:inline-flex;align-items:center;gap:6px;color:#c8102e;font-size:13px;font-weight:600;text-decoration:none;padding:8px 14px;background:#fef0f2;border-radius:6px;transition:all .2s}
.cert-card__link:hover{background:#c8102e;color:#fff}
.cert-card__badge{display:inline-flex;align-items:center;gap:6px;color:#16a34a;font-size:12px;font-weight:600;background:#dcfce7;padding:6px 12px;border-radius:100px}
.cert-card__badge i{font-size:10px}

/* ===== RESPONSIVE CERTS ===== */
@media(max-width:1024px){.certs__grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){
    .certs__grid{grid-template-columns:1fr}
    .certs{padding:60px 0}
    .hero__badges{gap:8px}
    .hero__badge-item{padding:8px 12px;font-size:12px}
}