/* ============================================================
   Jianghua Yacht 2026 — Deep Sea Blue + Champagne Gold
   极简高端 / 大留白 / 响应式
   ============================================================ */
:root{
  --navy:#0A2540; --navy-deep:#061A2E; --navy-soft:#123453;
  --gold:#C8A96E; --gold-soft:#DCC79A;
  --white:#FFFFFF; --paper:#F7F9FB; --line:#E6EBF1;
  --ink:#14273D; --gray:#5A6B7D; --gray-lt:#8A99A8;
  --font:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--gray);font-size:15px;line-height:1.75;background:var(--white);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none;transition:color .25s}
a:hover{color:var(--gold)}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:500;line-height:1.3}
.container{max-width:1280px;margin:0 auto;padding:0 40px}
::selection{background:var(--navy);color:#fff}

/* ---------- 通用 ---------- */
.section{padding:96px 0}
.section.paper{background:var(--paper)}
.section.navy{background:var(--navy-deep);color:#B9C7D6}
.sec-head{margin-bottom:56px}
.sec-tag{display:inline-block;font-size:12px;letter-spacing:.35em;color:var(--gold);text-transform:uppercase;margin-bottom:14px;font-weight:600}
.sec-title{font-size:36px;font-weight:600;letter-spacing:.02em}
.sec-title .thin{font-weight:200}
.sec-desc{max-width:640px;margin-top:16px;color:var(--gray-lt);font-size:15px}
.navy .sec-title{color:#fff}
.navy .sec-desc{color:#7E92A6}
.btn{display:inline-block;padding:14px 36px;font-size:13px;letter-spacing:.18em;text-transform:uppercase;border:1px solid var(--navy);color:var(--navy);background:transparent;transition:all .3s;cursor:pointer}
.btn:hover{background:var(--navy);color:#fff}
.btn.gold{border-color:var(--gold);color:var(--gold)}
.btn.gold:hover{background:var(--gold);color:#fff}
.btn.solid{background:var(--gold);border-color:var(--gold);color:#fff}
.btn.solid:hover{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.white{border-color:#fff;color:#fff}
.btn.white:hover{background:#fff;color:var(--navy)}

/* ---------- 顶部 ---------- */
.topbar{position:absolute;top:0;left:0;right:0;z-index:60;background:linear-gradient(rgba(6,26,46,.45),rgba(6,26,46,0));padding:10px 0;font-size:12px;color:#C6D3DF}
.topbar .container{display:flex;justify-content:space-between;align-items:center}
.topbar a{color:#C6D3DF}
.topbar a:hover{color:var(--gold)}
.topbar .topbar-l span{margin-right:22px}
.topbar .topbar-l i{color:var(--gold);margin-right:6px}
.lang a{padding:2px 8px;border:1px solid transparent}
.lang a.on{color:var(--gold);border-color:rgba(200,169,110,.55)}
.header{position:fixed;top:34px;left:0;right:0;z-index:50;transition:all .35s}
.header .container{display:flex;align-items:center;justify-content:space-between}
.logo img{height:44px;width:auto}
.nav{display:flex;align-items:center}
.nav>ul{display:flex;list-style:none}
.nav>ul>li{position:relative;margin-left:38px}
.nav>ul>li>a{color:#fff;font-size:14px;letter-spacing:.14em;text-transform:uppercase;padding:28px 0;display:inline-block;position:relative}
.nav>ul>li>a:after{content:"";position:absolute;left:0;bottom:20px;width:0;height:1px;background:var(--gold);transition:width .3s}
.nav>ul>li>a:hover:after,.nav>ul>li.active>a:after{width:100%}
.nav>ul>li:hover>a{color:var(--gold)}
.nav .sub{position:absolute;top:100%;left:-16px;min-width:180px;background:#fff;box-shadow:0 18px 40px rgba(10,37,64,.16);padding:10px 0;opacity:0;visibility:hidden;transform:translateY(12px);transition:all .3s;list-style:none}
.nav>ul>li:hover .sub{opacity:1;visibility:visible;transform:translateY(0)}
.nav .sub a{display:block;padding:9px 24px;font-size:13px;color:var(--ink);letter-spacing:.06em}
.nav .sub a:hover{background:var(--paper);color:var(--gold)}
.header.scrolled{top:0;background:rgba(255,255,255,.97);box-shadow:0 4px 24px rgba(10,37,64,.08)}
.header.scrolled .nav>ul>li>a{color:var(--ink);padding:22px 0}
.header.scrolled .nav>ul>li>a:hover{color:var(--gold)}
.header.scrolled .logo img{height:36px}
.menu-btn{display:none;width:34px;height:26px;position:relative;cursor:pointer;z-index:70}
.menu-btn span{display:block;width:100%;height:2px;background:#fff;position:absolute;left:0;transition:all .3s}
.menu-btn span:nth-child(1){top:2px}.menu-btn span:nth-child(2){top:12px}.menu-btn span:nth-child(3){top:22px}
.header.scrolled .menu-btn span{background:var(--navy)}
body.nav-open .menu-btn span{background:#fff}
body.nav-open .menu-btn span:nth-child(1){top:12px;transform:rotate(45deg)}
body.nav-open .menu-btn span:nth-child(2){opacity:0}
body.nav-open .menu-btn span:nth-child(3){top:12px;transform:rotate(-45deg)}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;height:100vh;min-height:640px;overflow:hidden;background:var(--navy-deep)}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s ease}
.hero-slide.on{opacity:1;z-index:1}
.hero-slide .bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.08);transition:transform 7s ease}
.hero-slide.on .bg{transform:scale(1)}
.hero-slide:after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(6,26,46,.82) 0%,rgba(6,26,46,.45) 45%,rgba(6,26,46,.18) 100%)}
.hero-content{position:absolute;z-index:5;left:0;right:0;top:0;bottom:0;display:flex;align-items:center}
.hero-txt{max-width:640px}
.hero-kicker{font-size:12px;letter-spacing:.4em;color:var(--gold);text-transform:uppercase;margin-bottom:22px;font-weight:600}
.hero-txt h1{color:#fff;font-size:54px;font-weight:600;letter-spacing:.04em;margin-bottom:18px}
.hero-txt h1 .thin{font-weight:200}
.hero-txt p{color:#C6D3DF;font-size:16px;margin-bottom:36px;max-width:480px}
.hero-dots{position:absolute;z-index:6;bottom:44px;left:50%;transform:translateX(-50%);display:flex;gap:12px}
.hero-dots span{width:36px;height:2px;background:rgba(255,255,255,.35);cursor:pointer;transition:background .3s}
.hero-dots span.on{background:var(--gold)}
.hero-scroll{position:absolute;z-index:6;bottom:40px;right:48px;color:#8FA5B9;font-size:11px;letter-spacing:.3em;text-transform:uppercase;writing-mode:vertical-rl}
.hero-scroll:after{content:"";display:block;width:1px;height:52px;background:var(--gold);margin:14px auto 0;animation:drip 1.8s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- 数字 ---------- */
.stats{display:flex;gap:0;border-top:1px solid var(--line)}
.stat{flex:1;text-align:center;padding:54px 20px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:44px;color:var(--navy);font-weight:600;line-height:1}
.stat b i{color:var(--gold);font-style:normal;font-size:26px}
.stat span{display:block;margin-top:12px;font-size:12px;letter-spacing:.22em;color:var(--gray-lt);text-transform:uppercase}

/* ---------- 分类卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cat-card{position:relative;height:380px;overflow:hidden;background:var(--navy)}
.cat-card img{width:100%;height:100%;object-fit:cover;opacity:.92;transition:transform .8s,opacity .5s}
.cat-card:hover img{transform:scale(1.07);opacity:.75}
.cat-card .cc-info{position:absolute;left:0;right:0;bottom:0;padding:26px 24px;background:linear-gradient(transparent,rgba(6,26,46,.85));color:#fff}
.cat-card .cc-info h4{color:#fff;font-size:20px;letter-spacing:.1em}
.cat-card .cc-info span{font-size:11px;letter-spacing:.25em;color:var(--gold);text-transform:uppercase}
.cat-card .cc-arrow{position:absolute;top:22px;right:22px;width:38px;height:38px;border:1px solid rgba(255,255,255,.4);border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;transition:all .3s}
.cat-card:hover .cc-arrow{background:var(--gold);border-color:var(--gold)}

/* ---------- 产品卡 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{background:#fff;border:1px solid var(--line);transition:all .35s}
.prod-card:hover{border-color:var(--gold);box-shadow:0 24px 48px rgba(10,37,64,.10);transform:translateY(-4px)}
.prod-card .pc-img{height:250px;overflow:hidden}
.prod-card .pc-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.prod-card:hover .pc-img img{transform:scale(1.06)}
.prod-card .pc-body{padding:24px 26px}
.prod-card .pc-body h4{font-size:17px;margin-bottom:8px}
.prod-card .pc-body p{font-size:13px;color:var(--gray-lt);height:44px;overflow:hidden}
.prod-card .pc-more{margin-top:16px;font-size:12px;letter-spacing:.2em;color:var(--gold);text-transform:uppercase}
.prod-card .pc-more i{margin-left:6px}

/* ---------- 技术区块 ---------- */
.tech-row{display:flex;gap:64px;align-items:center;margin-bottom:80px}
.tech-row:last-child{margin-bottom:0}
.tech-row .t-img{flex:1;height:420px;overflow:hidden}
.tech-row .t-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.tech-row:hover .t-img img{transform:scale(1.05)}
.tech-row .t-txt{flex:1}
.tech-row .t-txt h3{font-size:30px;margin-bottom:18px}
.tech-row .t-txt p{margin-bottom:26px;color:var(--gray)}
.tech-row.rev .t-img{order:2}

/* ---------- 新闻卡 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card .nc-img{height:230px;overflow:hidden;position:relative}
.news-card .nc-img img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.news-card:hover .nc-img img{transform:scale(1.06)}
.news-card .nc-date{position:absolute;top:0;left:0;background:var(--gold);color:#fff;padding:8px 14px;font-size:12px;letter-spacing:.1em}
.news-card .nc-body{padding:22px 4px 0}
.news-card .nc-body h4{font-size:16px;line-height:1.5;margin-bottom:8px}
.news-card .nc-body p{font-size:13px;color:var(--gray-lt);height:44px;overflow:hidden}

/* ---------- 伙伴 ---------- */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.partner-card{background:#fff;border:1px solid var(--line);padding:44px 30px;text-align:center;transition:all .35s}
.partner-card:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:0 20px 44px rgba(10,37,64,.08)}
.partner-card .pl-logo{height:64px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.partner-card .pl-logo img{max-height:64px;max-width:180px}
.partner-card .pl-name{font-size:22px;letter-spacing:.22em;color:var(--navy);font-weight:600}
.partner-card p{font-size:13px;color:var(--gray-lt);margin-top:12px;height:66px;overflow:hidden}
.partner-card .pl-link{margin-top:18px;font-size:12px;letter-spacing:.2em;color:var(--gold);text-transform:uppercase}

/* ---------- CTA ---------- */
.cta-band{background:linear-gradient(120deg,var(--navy-deep),var(--navy-soft));position:relative;overflow:hidden}
.cta-band .container{padding:88px 40px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h3{color:#fff;font-size:32px;font-weight:600;margin-bottom:10px}
.cta-band p{color:#8FA5B9;max-width:520px}

/* ---------- 页头 Banner ---------- */
.page-hero{position:relative;height:420px;background:var(--navy-deep);display:flex;align-items:flex-end}
.page-hero .ph-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.38}
.page-hero .container{position:relative;z-index:2;padding-bottom:56px}
.page-hero .crumb{font-size:12px;letter-spacing:.2em;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.page-hero h1{color:#fff;font-size:44px;font-weight:600}
.page-hero p{color:#B9C7D6;margin-top:12px;max-width:560px;font-size:14px}

/* ---------- 筛选 chips ---------- */
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:46px}
.chips a{padding:10px 26px;border:1px solid var(--line);font-size:13px;letter-spacing:.12em;color:var(--gray);text-transform:uppercase;transition:all .3s}
.chips a:hover{border-color:var(--gold);color:var(--gold)}
.chips a.active{background:var(--navy);border-color:var(--navy);color:#fff}

/* ---------- 分页 ---------- */
.pager{margin-top:56px;text-align:center}
.pager a,.pager span{display:inline-block;min-width:40px;padding:8px 12px;margin:0 3px;border:1px solid var(--line);font-size:13px;color:var(--gray)}
.pager a:hover{border-color:var(--gold);color:var(--gold)}
.pager .current,.pager span.current{background:var(--navy);border-color:var(--navy);color:#fff}

/* ---------- 产品详情 ---------- */
.pd-top{display:flex;gap:56px;margin-bottom:70px}
.pd-gallery{flex:1.15}
.pd-main{height:480px;overflow:hidden;background:var(--paper)}
.pd-main img{width:100%;height:100%;object-fit:cover;cursor:zoom-in}
.pd-thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:8px}
.pd-thumbs a{height:64px;overflow:hidden;border:2px solid transparent;cursor:pointer;opacity:.65;transition:all .25s}
.pd-thumbs a.on{border-color:var(--gold);opacity:1}
.pd-thumbs img{width:100%;height:100%;object-fit:cover}
.pd-info{flex:1}
.pd-info .pd-cat{font-size:12px;letter-spacing:.3em;color:var(--gold);text-transform:uppercase;margin-bottom:14px}
.pd-info h1{font-size:36px;margin-bottom:18px}
.pd-info .pd-lead{color:var(--gray);margin-bottom:30px;padding-bottom:30px;border-bottom:1px solid var(--line)}
.pd-cta{display:flex;gap:14px;flex-wrap:wrap}
.pd-body h3{font-size:22px;margin:44px 0 18px;padding-left:16px;border-left:3px solid var(--gold)}
.pd-body p{margin-bottom:16px;color:var(--gray)}
.pd-body p.lead{font-size:17px;color:var(--ink)}
.spec-table{width:100%;border-collapse:collapse;font-size:14px}
.spec-table th,.spec-table td{padding:13px 20px;border:1px solid var(--line);text-align:left}
.spec-table th{background:var(--paper);color:var(--navy);font-weight:600;width:32%;letter-spacing:.04em}
.spec-table td{color:var(--gray)}
.spec-note{font-size:12px;color:var(--gray-lt);margin-top:10px}
.pd-nav{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:64px;padding-top:28px;font-size:14px}
.pd-nav a{color:var(--gray)}
.pd-nav a:hover{color:var(--gold)}

/* ---------- 文章页 ---------- */
.article{max-width:820px;margin:0 auto}
.article h1{font-size:34px;margin-bottom:14px}
.article .a-meta{font-size:13px;color:var(--gray-lt);letter-spacing:.1em;padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:34px}
.article .a-meta span{margin-right:22px}
.article .a-hero{margin:0 0 34px}
.article-content p{margin-bottom:18px}
.article-content img{margin:22px 0}
.article-content h3{margin:36px 0 14px}

/* ---------- 留言表单 ---------- */
.contact-grid{display:flex;gap:64px}
.contact-info{flex:1}
.contact-info .ci-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.contact-info .ci-item .ci-ic{width:44px;height:44px;border:1px solid var(--gold);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:17px;flex:none}
.contact-info .ci-item b{display:block;color:var(--ink);font-size:14px;letter-spacing:.06em;margin-bottom:4px}
.contact-info .ci-item p{font-size:14px;color:var(--gray)}
.contact-info .ci-social{margin-top:30px;display:flex;gap:12px}
.contact-info .ci-social a{width:44px;height:44px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--gray)}
.contact-info .ci-social a:hover{border-color:var(--gold);color:var(--gold)}
.contact-form{flex:1.2;background:var(--paper);padding:48px}
.contact-form h3{font-size:24px;margin-bottom:26px}
.f-row{display:flex;gap:16px;margin-bottom:16px}
.f-row .f-item{flex:1}
.f-item input,.f-item textarea{width:100%;padding:14px 18px;border:1px solid var(--line);background:#fff;font-size:14px;font-family:var(--font);color:var(--ink);transition:border-color .3s}
.f-item input:focus,.f-item textarea:focus{outline:none;border-color:var(--gold)}
.f-item textarea{height:150px;resize:vertical}
.f-tip{font-size:12px;color:var(--gray-lt);margin-top:14px}

/* ---------- 页脚 ---------- */
.footer{background:var(--navy-deep);color:#8FA5B9;padding:80px 0 0;font-size:13px}
.footer .f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px}
.footer h5{color:#fff;font-size:13px;letter-spacing:.25em;text-transform:uppercase;margin-bottom:22px}
.footer .f-brand img{height:40px;margin-bottom:20px}
.footer .f-brand p{max-width:320px;line-height:1.9}
.footer ul{list-style:none}
.footer ul li{margin-bottom:12px}
.footer ul a{color:#8FA5B9}
.footer ul a:hover{color:var(--gold)}
.footer .f-contact li{display:flex;gap:10px}
.footer .f-contact i{color:var(--gold)}
.footer .f-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer .f-bottom a{color:#8FA5B9}
.footer .f-bottom a:hover{color:var(--gold)}

/* ---------- 搜索 ---------- */
.search-box{display:flex;max-width:520px;margin-bottom:56px}
.search-box input{flex:1;padding:14px 20px;border:1px solid var(--line);font-size:14px}
.search-box button{padding:14px 32px;background:var(--navy);border:none;color:#fff;font-size:13px;letter-spacing:.15em;cursor:pointer}
.search-box button:hover{background:var(--gold)}
.result-item{display:flex;gap:26px;padding:26px 0;border-bottom:1px solid var(--line)}
.result-item .r-img{width:180px;height:120px;flex:none;overflow:hidden}
.result-item .r-img img{width:100%;height:100%;object-fit:cover}
.result-item h4{font-size:17px;margin-bottom:8px}
.result-item p{font-size:13px;color:var(--gray-lt)}
.result-item .r-date{font-size:12px;color:var(--gold);margin-top:10px;letter-spacing:.1em}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(36px);transition:opacity .8s ease,transform .8s ease}
.fade-up.show{opacity:1;transform:translateY(0)}

/* ---------- Lightbox ---------- */
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(6,26,46,.94);display:none;align-items:center;justify-content:center}
.lightbox.on{display:flex}
.lightbox img{max-width:88%;max-height:86%;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lightbox .lb-close{position:absolute;top:26px;right:34px;color:#fff;font-size:30px;cursor:pointer}
.lightbox .lb-prev,.lightbox .lb-next{position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:36px;cursor:pointer;padding:20px;user-select:none}
.lightbox .lb-prev{left:16px}.lightbox .lb-next{right:16px}

/* ---------- 响应式 ---------- */
@media(max-width:1100px){
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .pd-top{flex-direction:column}
  .footer .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .topbar{display:none}
  .header{top:0;background:var(--navy-deep);padding:12px 0}
  .header.scrolled{background:var(--navy-deep)}
  .header.scrolled .nav>ul>li>a{color:#fff;padding:22px 0}
  .menu-btn{display:block}
  .nav{position:fixed;inset:0;background:var(--navy-deep);flex-direction:column;justify-content:center;opacity:0;visibility:hidden;transition:all .35s}
  body.nav-open .nav{opacity:1;visibility:visible}
  .nav>ul{flex-direction:column;text-align:center}
  .nav>ul>li{margin:0 0 8px}
  .nav>ul>li>a{font-size:18px;padding:10px 0}
  .nav .sub{position:static;opacity:1;visibility:visible;transform:none;background:transparent;box-shadow:none;padding:0 0 10px}
  .nav .sub a{color:#8FA5B9;text-align:center}
  .hero-txt h1{font-size:36px}
  .stats{flex-wrap:wrap}
  .stat{flex:1 1 50%;border-bottom:1px solid var(--line)}
  .prod-grid,.news-grid{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .cat-card{height:280px}
  .tech-row{flex-direction:column;gap:28px}
  .tech-row .t-img{width:100%;height:280px}
  .tech-row.rev .t-img{order:0}
  .contact-grid{flex-direction:column}
  .contact-form{padding:32px 24px}
  .f-row{flex-direction:column;gap:16px}
  .page-hero{height:320px}
  .page-hero h1{font-size:30px}
  .partner-grid{grid-template-columns:1fr}
  .result-item .r-img{display:none}
  .cta-band .container{padding:56px 24px}
}