/* ============================================================
   大连新瑞华船舶辅机有限公司 官网样式 · 极致版
   Dalian Xinruihua Marine Auxiliary Machinery Co., Ltd.
   海洋工业设计语言 · 深海蓝 × 钢灰 × 工程金
   ============================================================ */

:root{
  --blue-950:#04233f;
  --blue-900:#073058;
  --blue-800:#0a4682;
  --blue-700:#0e5aa8;
  --blue-600:#1266bd;
  --blue-500:#1a78d6;
  --blue-200:#bcd7f2;
  --blue-100:#e3eef9;
  --blue-50:#f1f6fc;
  --ink:#16222e;
  --gray-700:#3d4a58;
  --gray-600:#5a6877;
  --gray-500:#7c8a99;
  --line:#e2e9f1;
  --bg:#f4f7fb;
  --white:#ffffff;
  --amber:#d99a2b;
  --amber-soft:#e8b25a;
  --amber-deep:#b97f16;
  --shadow-xs:0 1px 3px rgba(7,45,85,.06);
  --shadow-sm:0 4px 16px rgba(7,45,85,.08);
  --shadow-md:0 14px 40px rgba(7,45,85,.16);
  --shadow-lg:0 30px 70px rgba(4,35,63,.24);
  --radius:12px;
  --radius-lg:18px;
  --container:1200px;
  --font-sans:"Noto Sans SC","HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.22,.8,.26,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--white);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 22px}

/* 选区与滚动条 */
::selection{background:var(--amber);color:#fff}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(var(--blue-700),var(--blue-800));border-radius:8px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:var(--blue-600)}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:4px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:linear-gradient(90deg,var(--blue-950),var(--blue-900));color:#bcd0e6;font-size:12.5px;letter-spacing:.4px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px;flex-wrap:wrap}
.topbar .tb-left{display:flex;align-items:center;gap:10px}
.topbar .tb-left svg{color:var(--amber);flex:none}
.topbar a{color:#d9e6f5;margin-left:16px;transition:color .2s}
.topbar a:hover{color:var(--amber-soft)}
.topbar .lang{display:flex;align-items:center;color:#bcd0e6}
.topbar .lang .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.3);margin:0 10px}

/* ---------- 主导航（毛玻璃） ---------- */
.site-header{
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:1px solid rgba(226,233,241,.8);
  position:sticky;top:0;z-index:100;
  transition:box-shadow .3s;
}
.site-header.scrolled{box-shadow:0 10px 30px rgba(7,45,85,.10)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:46px;width:auto;filter:drop-shadow(0 2px 4px rgba(7,45,85,.12))}
.nav{display:flex;align-items:center;height:100%;gap:2px;flex:none}
.nav>li{position:relative;height:100%;flex-shrink:0}
.nav>li>a{
  position:relative;display:flex;align-items:center;height:100%;padding:0 20px;
  font-size:15.5px;font-weight:600;color:var(--gray-700);white-space:nowrap;letter-spacing:.3px;
  transition:color .25s var(--ease);
}
.nav>li>a::after{
  content:"";position:absolute;left:20px;right:20px;bottom:0;height:2px;border-radius:2px 2px 0 0;
  background:linear-gradient(90deg,var(--amber),var(--amber-soft));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav>li:hover>a::after,.nav>li.active>a::after{transform:scaleX(1)}
.nav>li:hover>a,.nav>li.active>a{color:var(--blue-800)}
.nav>li>a .arr{font-size:9px;margin-left:5px;color:var(--gray-500);transition:transform .3s var(--ease)}
.nav>li:hover>a .arr{transform:rotate(180deg)}
.nav .dropdown{
  position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(10px);
  background:rgba(255,255,255,.97);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-radius:0 0 var(--radius) var(--radius);
  box-shadow:var(--shadow-md);min-width:218px;padding:10px 0;
  opacity:0;visibility:hidden;transition:all .28s var(--ease);
  border-top:2px solid var(--amber);
}
.nav>li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav .dropdown a{
  display:flex;align-items:center;justify-content:space-between;padding:11px 22px;
  font-size:14px;color:var(--gray-700);position:relative;transition:.2s;
}
.nav .dropdown a::after{content:"→";opacity:0;transform:translateX(-6px);transition:.25s;color:var(--amber);font-size:13px}
.nav .dropdown a:hover{background:var(--blue-50);color:var(--blue-700);padding-left:28px}
.nav .dropdown a:hover::after{opacity:1;transform:translateX(0)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 11px;color:var(--blue-800);cursor:pointer;transition:.2s}
.nav-toggle:hover{background:var(--blue-50)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:min(92vh,820px);display:flex;align-items:center;overflow:hidden;isolation:isolate}
.hero .bg{position:absolute;inset:0;background-size:cover;background-position:center;animation:heroZoom 12s var(--ease) forwards}
@keyframes heroZoom{from{transform:scale(1.06)}to{transform:scale(1)}}
.hero .bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(4,35,63,.94) 0%,rgba(6,48,88,.78) 46%,rgba(10,70,130,.34) 100%),
    linear-gradient(180deg,rgba(4,35,63,.25) 0%,transparent 30%,rgba(4,35,63,.5) 100%);
}
/* 精细海事网格纹理 */
.hero .gridlines{position:absolute;inset:0;z-index:1;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:88px 88px;
  -webkit-mask-image:linear-gradient(90deg,#000 0%,transparent 70%);
  mask-image:linear-gradient(90deg,#000 0%,transparent 70%);
}
.hero .container{position:relative;z-index:2;color:#fff;padding-top:90px;padding-bottom:120px;max-width:var(--container)}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  background:rgba(217,154,43,.14);border:1px solid rgba(217,154,43,.4);color:var(--amber-soft);
  font-size:12.5px;letter-spacing:3px;padding:7px 16px;border-radius:40px;margin-bottom:26px;
}
.hero .eyebrow::before{content:"";width:22px;height:1px;background:var(--amber)}
.hero h1{
  font-size:clamp(38px,5.2vw,62px);line-height:1.16;font-weight:800;max-width:780px;
  letter-spacing:1.5px;margin-bottom:0;
}
.hero h1 .gold{color:var(--amber-soft);position:relative;white-space:nowrap}
.hero h1 .gold::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:6px;background:rgba(217,154,43,.28);z-index:-1;border-radius:3px}
.hero p{font-size:17px;max-width:620px;margin-top:24px;color:#cfe0f3;line-height:1.9}
.hero .cta{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.hero .hero-meta{display:flex;gap:38px;margin-top:52px;flex-wrap:wrap}
.hero .hero-meta .hm{display:flex;flex-direction:column;gap:2px}
.hero .hero-meta .hm b{font-size:24px;font-weight:800;color:#fff;letter-spacing:.5px}
.hero .hero-meta .hm b em{font-style:normal;color:var(--amber-soft);font-size:15px;margin-left:2px}
.hero .hero-meta .hm span{font-size:12.5px;color:#9fb8d3;letter-spacing:1px}
/* hero 加载编排动画 */
.hero .anim{opacity:0;transform:translateY(28px);animation:riseIn .9s var(--ease) forwards}
.hero .anim.d1{animation-delay:.15s}.hero .anim.d2{animation-delay:.32s}
.hero .anim.d3{animation-delay:.5s}.hero .anim.d4{animation-delay:.68s}.hero .anim.d5{animation-delay:.86s}
@keyframes riseIn{to{opacity:1;transform:translateY(0)}}
/* 向下滚动指示 */
.hero .scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;color:#9fb8d3;
  display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11px;letter-spacing:2px;
}
.hero .scroll-hint .mouse{width:22px;height:34px;border:1.5px solid rgba(255,255,255,.4);border-radius:12px;display:flex;justify-content:center;padding-top:6px}
.hero .scroll-hint .mouse i{width:2px;height:7px;border-radius:2px;background:var(--amber);animation:drop 1.6s infinite}
@keyframes drop{0%{transform:translateY(0);opacity:1}70%{transform:translateY(10px);opacity:0}100%{opacity:0}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 30px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;border:none;letter-spacing:.5px;transition:all .28s var(--ease);position:relative;overflow:hidden}
.btn-primary{background:linear-gradient(135deg,var(--amber-soft),var(--amber));color:var(--blue-950);box-shadow:0 8px 24px rgba(217,154,43,.35)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(217,154,43,.45)}
.btn-primary::after{content:"";position:absolute;top:0;left:-80%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.4),transparent);transform:skewX(-20deg);transition:left .5s}
.btn-primary:hover::after{left:120%}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-3px)}

/* 页内横幅 */
.page-banner{position:relative;min-height:250px;display:flex;align-items:flex-end;color:#fff;background-size:cover;background-position:center;padding-bottom:38px}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,35,63,.5),rgba(4,35,63,.86))}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:clamp(30px,4vw,42px);letter-spacing:1.5px;font-weight:800;position:relative;padding-bottom:14px}
.page-banner h1::after{content:"";position:absolute;left:0;bottom:0;width:48px;height:3px;border-radius:3px;background:var(--amber)}
.page-banner .crumb{margin-top:16px;font-size:13px;color:#9fb8d3;letter-spacing:.5px}
.page-banner .crumb a{color:#dbe6f2;transition:.2s}
.page-banner .crumb a:hover{color:var(--amber-soft)}
.page-banner .crumb span{margin:0 8px;opacity:.5}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;position:relative}
.section.bg{background:linear-gradient(180deg,#fbfcfe,var(--bg) 20%,var(--bg) 80%,#fbfcfe)}
.section-head{text-align:center;margin-bottom:54px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:14px;
  font-size:12.5px;color:var(--blue-600);letter-spacing:4px;font-weight:700;text-transform:uppercase;
}
.section-head .kicker::before,.section-head .kicker::after{content:"";width:28px;height:1px;background:var(--line)}
.section-head h2{font-size:clamp(28px,3.4vw,38px);color:var(--blue-900);margin-top:12px;letter-spacing:.5px;line-height:1.3}
.section-head .line{width:52px;height:2px;background:linear-gradient(90deg,var(--amber),var(--amber-soft));margin:20px auto 0;border-radius:2px;position:relative}
.section-head .line::after{content:"";position:absolute;left:50%;top:-4px;width:10px;height:10px;border-radius:50%;background:var(--amber);transform:translateX(-50%);box-shadow:0 0 0 4px rgba(217,154,43,.15)}
.section-head p{color:var(--gray-600);margin-top:18px;max-width:680px;margin-left:auto;margin-right:auto;font-size:15.5px}

.grid{display:grid;gap:26px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- 关于摘要 ---------- */
.about-intro{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
.about-intro .figure{position:relative}
.about-intro .figure::before{content:"";position:absolute;inset:-16px auto auto -16px;width:150px;height:150px;border:2px solid var(--blue-100);border-radius:var(--radius-lg);z-index:0}
.about-intro .figure .frame{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}
.about-intro .figure .frame img{width:100%;height:430px;object-fit:cover;transform:scale(1.01)}
.about-intro .figure .frame::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(4,35,63,.28),transparent 40%)}
.about-intro .figure .badge{
  position:absolute;left:-18px;bottom:34px;z-index:2;
  background:linear-gradient(135deg,var(--amber-soft),var(--amber-deep));color:var(--blue-950);
  padding:18px 22px;border-radius:12px;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:12px;
}
.about-intro .figure .badge b{font-size:34px;line-height:1;font-weight:800}
.about-intro .figure .badge span{font-size:12.5px;line-height:1.4;font-weight:600;letter-spacing:.5px}
.about-intro h2{font-size:clamp(26px,3vw,34px);color:var(--blue-900);margin-bottom:8px;letter-spacing:.5px}
.about-intro .tagline{color:var(--blue-600);font-weight:600;margin-bottom:20px;letter-spacing:1.5px;font-size:14px;text-transform:uppercase}
.about-intro p{color:var(--gray-600);margin-bottom:14px;font-size:15.5px}
.about-intro .feat{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.about-intro .feat div{
  background:linear-gradient(180deg,var(--blue-50),#fff);border:1px solid var(--blue-100);
  border-left:3px solid var(--blue-600);padding:13px 16px;border-radius:8px;
  font-size:14px;color:var(--blue-900);font-weight:600;display:flex;align-items:center;gap:9px;transition:.25s var(--ease);
}
.about-intro .feat div:hover{transform:translateX(4px);border-left-color:var(--amber)}
.about-intro .feat div::before{content:"✓";color:var(--amber);font-weight:700;flex:none}

/* ---------- 产品分类（图文叠卡） ---------- */
.prod-card{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);background:#fff;transition:transform .4s var(--ease),box-shadow .4s var(--ease);
  display:flex;flex-direction:column;min-height:330px;
}
.prod-card::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(4,35,63,0) 40%,rgba(4,35,63,.88) 100%);opacity:.9;transition:.4s}
.prod-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.prod-card:hover::before{background:linear-gradient(180deg,rgba(4,35,63,.1) 30%,rgba(4,35,63,.94) 100%)}
.prod-card .ph{position:absolute;inset:0}
.prod-card .ph img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.prod-card:hover .ph img{transform:scale(1.08)}
.prod-card .tag{
  position:absolute;left:18px;top:18px;z-index:2;
  background:rgba(4,35,63,.55);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;padding:5px 13px;border-radius:30px;letter-spacing:1.5px;
}
.prod-card .pb{position:relative;z-index:2;padding:26px 24px 22px;display:flex;flex-direction:column;margin-top:auto;color:#fff}
.prod-card .pb h3{font-size:20px;font-weight:700;letter-spacing:.5px;margin-bottom:8px}
.prod-card .pb p{font-size:13.5px;color:rgba(255,255,255,.82);line-height:1.7;max-height:0;opacity:0;overflow:hidden;transition:max-height .45s var(--ease),opacity .4s,transform .4s;transform:translateY(6px)}
.prod-card:hover .pb p{max-height:90px;opacity:1;transform:translateY(0);margin-bottom:8px}
.prod-card .more{
  display:inline-flex;align-items:center;gap:7px;margin-top:12px;color:var(--amber-soft);font-weight:600;font-size:13.5px;
  opacity:0;transform:translateX(-8px);transition:.35s var(--ease);
}
.prod-card .more::before{content:"查看详情";letter-spacing:1px}
.prod-card .more::after{content:"→";transition:transform .3s}
.prod-card:hover .more{opacity:1;transform:translateX(0)}
.prod-card:hover .more::after{transform:translateX(4px)}

/* ---------- 数据/统计 ---------- */
.section-stats{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--blue-950),var(--blue-800))}
.section-stats::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
}
.section-stats::after{content:"";position:absolute;right:-140px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(217,154,43,.16),transparent 70%)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;z-index:1}
.stat{padding:46px 28px;text-align:center;color:#fff;position:relative}
.stat+.stat{border-left:1px solid rgba(255,255,255,.12)}
.stat b{display:block;font-size:46px;color:#fff;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.stat b em{font-style:normal;color:var(--amber-soft);font-size:20px;margin-left:2px}
.stat span{font-size:14px;color:#9fb8d3;margin-top:14px;display:block;letter-spacing:1px}
.stat .cap{width:34px;height:2px;background:var(--amber);margin:0 auto;border-radius:2px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto}
.timeline .tl-line{position:absolute;left:50%;top:10px;bottom:10px;width:2px;transform:translateX(-50%);background:linear-gradient(180deg,var(--blue-100),var(--blue-600),var(--blue-100))}
.tl-item{position:relative;width:50%;padding:0 46px 52px}
.tl-item:nth-child(odd){left:0;text-align:right}
.tl-item:nth-child(even){left:50%}
.tl-item .dot{position:absolute;top:6px;width:16px;height:16px;border-radius:50%;z-index:2;background:#fff;border:3px solid var(--blue-600);box-shadow:0 0 0 5px rgba(18,102,189,.14)}
.tl-item .dot::after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--amber)}
.tl-item:nth-child(odd) .dot{right:-8px}
.tl-item:nth-child(even) .dot{left:-8px}
.tl-item .year{font-size:30px;font-weight:800;color:var(--blue-600);letter-spacing:1px;font-variant-numeric:tabular-nums}
.tl-item h4{font-size:18px;color:var(--blue-900);margin:6px 0 6px;letter-spacing:.5px}
.tl-item p{font-size:14px;color:var(--gray-600);line-height:1.7}

/* ---------- 客户 ---------- */
.client{background:linear-gradient(160deg,var(--blue-900),var(--blue-950));color:#fff;position:relative;overflow:hidden}
.client::before{content:"";position:absolute;right:-120px;bottom:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(217,154,43,.12),transparent 70%)}
.client .section-head .kicker{color:var(--amber-soft)}
.client .section-head .kicker::before,.client .section-head .kicker::after{background:rgba(255,255,255,.2)}
.client .section-head h2{color:#fff}
.client-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;position:relative;z-index:1}
.client-list li{
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:10px;
  padding:20px 20px;display:flex;align-items:center;gap:14px;font-size:15px;color:#d9e4f0;transition:.3s var(--ease);
}
.client-list li:hover{background:rgba(255,255,255,.1);transform:translateY(-4px);border-color:rgba(217,154,43,.5)}
.client-list .ic{width:42px;height:42px;border-radius:10px;background:rgba(217,154,43,.14);color:var(--amber-soft);display:flex;align-items:center;justify-content:center;flex:none}

/* ---------- 新闻 ---------- */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-xs);transition:transform .35s var(--ease),box-shadow .35s var(--ease);display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--blue-200)}
.news-card .nh{height:190px;overflow:hidden;position:relative}
.news-card .nh img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news-card:hover .nh img{transform:scale(1.06)}
.news-card .nh .cate{position:absolute;left:14px;top:14px;background:var(--blue-800);color:#fff;font-size:11.5px;padding:4px 12px;border-radius:20px;letter-spacing:1px}
.news-card .nb{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-card .nb .date{font-size:12px;color:var(--gray-500);margin-bottom:10px;display:flex;align-items:center;gap:8px}
.news-card .nb .date::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}
.news-card .nb h3{font-size:16.5px;color:var(--ink);margin-bottom:10px;line-height:1.55;font-weight:600}
.news-card .nb p{font-size:13.5px;color:var(--gray-600);flex:1;line-height:1.75}
.news-card .nb .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;color:var(--blue-600);font-weight:600;font-size:13.5px}
.news-card .nb .more::after{content:"→";transition:transform .3s}
.news-card:hover .nb .more::after{transform:translateX(4px)}

/* ---------- 案例/业绩 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-item{position:relative;border-radius:var(--radius-lg);overflow:hidden;height:270px;box-shadow:var(--shadow-sm)}
.case-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.case-item:hover img{transform:scale(1.07)}
.case-item .cap{position:absolute;inset:auto 0 0 0;background:linear-gradient(transparent,rgba(4,35,63,.94));color:#fff;padding:44px 20px 20px}
.case-item .cap h4{font-size:17px;letter-spacing:.5px}
.case-item .cap p{font-size:12.5px;color:#bcd0e6;margin-top:4px}
.case-item .cap::before{content:"";position:absolute;left:20px;top:34px;width:24px;height:2px;background:var(--amber);border-radius:2px}

/* ---------- 资质 ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cert-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px 20px 22px;text-align:center;
  box-shadow:var(--shadow-xs);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .3s;position:relative;
}
.cert-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--blue-200)}
.cert-item .pic{height:150px;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#fff,var(--bg));border-radius:10px;margin-bottom:14px}
.cert-item img{max-height:140px;object-fit:contain;margin:0 auto;filter:drop-shadow(0 4px 10px rgba(7,45,85,.12))}
.cert-item h4{font-size:16px;color:var(--blue-900);margin-top:2px}
.cert-item p{font-size:12.5px;color:var(--gray-600);margin-top:8px;line-height:1.6}

/* ---------- 联系 ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1.25fr;gap:36px}
.contact-info{
  background:linear-gradient(160deg,var(--blue-900),var(--blue-950));color:#fff;
  border-radius:var(--radius-lg);padding:38px;position:relative;overflow:hidden;
}
.contact-info::before{content:"";position:absolute;right:-70px;bottom:-70px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(217,154,43,.14),transparent 70%)}
.contact-info h3{font-size:22px;margin-bottom:24px;color:#fff;letter-spacing:.5px}
.contact-info li{display:flex;gap:15px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.1);font-size:15px;color:#d9e4f0;align-items:flex-start}
.contact-info li:last-child{border-bottom:none}
.contact-info li .ic{flex:none;color:var(--amber-soft);background:rgba(217,154,43,.12);width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center}
.contact-info li b{color:#fff;font-weight:600}
.contact-info .qr{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:24px;text-align:center}
.contact-info .qr img{width:130px;height:130px;object-fit:contain;background:#fff;border-radius:10px;padding:6px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--blue-950);color:#8fa6bf;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--amber),transparent)}
.footer-top{padding:60px 0 42px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr;gap:40px}
.footer-grid h4{color:#fff;font-size:15.5px;margin-bottom:20px;letter-spacing:.5px}
.footer-grid ul li{margin-bottom:11px}
.footer-grid ul a{font-size:14px;color:#8fa6bf;transition:.25s;display:inline-flex;align-items:center;gap:6px}
.footer-grid ul a::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--amber);opacity:.5;transition:.25s}
.footer-grid ul a:hover{color:var(--amber-soft);padding-left:4px}
.footer-grid ul a:hover::before{opacity:1}
.footer-brand p{font-size:14px;color:#8fa6bf;margin-top:16px;line-height:1.9}
.footer-brand .tel{color:var(--amber-soft);font-size:26px;font-weight:800;display:block;margin-top:14px;letter-spacing:.5px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:12.5px;color:#68809a}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* ---------- 内页通用 ---------- */
.page-wrap{background:linear-gradient(180deg,#fbfcfe,var(--bg));padding:54px 0 80px;min-height:60vh}
.page-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:40px 42px;border:1px solid var(--line)}
.page-card h2{font-size:26px;color:var(--blue-900);margin-bottom:18px;position:relative;padding-left:18px;letter-spacing:.5px}
.page-card h2::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:5px;border-radius:3px;background:linear-gradient(180deg,var(--amber),var(--amber-soft))}
.page-card h3{font-size:19px;color:var(--blue-800);margin:28px 0 14px;letter-spacing:.3px}
.page-card p{color:var(--gray-600);margin-bottom:13px;text-indent:2em;font-size:15.5px}
.page-card ul.list{margin:12px 0 18px;padding-left:4px}
.page-card ul.list li{position:relative;padding-left:24px;margin-bottom:11px;color:var(--gray-600);font-size:15px}
.page-card ul.list li::before{content:"→";position:absolute;left:0;color:var(--amber);font-weight:600}
.page-card .sub-tag{display:inline-block;background:var(--blue-50);color:var(--blue-700);font-size:13px;padding:3px 12px;border-radius:16px;margin:0 8px 8px 0}

/* 分栏布局 */
.two-col{display:grid;grid-template-columns:258px 1fr;gap:30px;align-items:start}
.side-nav{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);overflow:hidden;position:sticky;top:98px;border:1px solid var(--line)}
.side-nav .sn-title{
  background:linear-gradient(135deg,var(--blue-800),var(--blue-950));color:#fff;padding:20px 24px;
  font-size:17px;font-weight:700;letter-spacing:1px;position:relative;
}
.side-nav .sn-title::after{content:"";position:absolute;left:24px;bottom:0;width:26px;height:2px;background:var(--amber);border-radius:2px}
.side-nav ul a{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;font-size:15px;color:var(--gray-700);border-bottom:1px solid var(--line);transition:.25s;border-left:3px solid transparent}
.side-nav ul a::after{content:"→";opacity:0;transform:translateX(-6px);transition:.25s;color:var(--amber);font-size:13px}
.side-nav ul a:hover,.side-nav ul a.active{background:var(--blue-50);color:var(--blue-700);border-left-color:var(--amber);font-weight:600}
.side-nav ul a:hover::after,.side-nav ul a.active::after{opacity:1;transform:translateX(0)}
.side-contact{margin-top:20px;background:linear-gradient(160deg,var(--blue-900),var(--blue-950));border-radius:var(--radius-lg);padding:26px;color:#fff;box-shadow:var(--shadow-sm)}
.side-contact h4{font-size:16px;margin-bottom:16px;color:#fff;letter-spacing:.5px}
.side-contact p{font-size:14px;color:#bcd0e6;margin-bottom:9px;text-indent:0}
.side-contact .tel{font-size:24px;font-weight:800;color:var(--amber-soft);display:block;margin-top:8px;letter-spacing:.5px}

/* 产品详情标签页 */
.prod-cat{margin-bottom:36px}
.prod-cat h3{font-size:23px;color:var(--blue-900);display:flex;align-items:center;gap:14px;margin-bottom:20px}
.prod-cat h3 .no{
  background:linear-gradient(135deg,var(--blue-600),var(--blue-800));color:#fff;width:40px;height:40px;
  border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:18px;flex:none;
  box-shadow:0 6px 16px rgba(18,102,189,.28);
}
.prod-cat h3 small{font-size:13.5px;color:var(--gray-500);font-weight:400;letter-spacing:1px}
.sub-prod{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.sub-prod .sp{
  background:linear-gradient(180deg,#fff,var(--bg));border:1px solid var(--line);border-radius:12px;padding:18px 14px;
  text-align:center;transition:.3s var(--ease);
}
.sub-prod .sp:hover{border-color:var(--blue-500);transform:translateY(-5px);box-shadow:var(--shadow-md)}
.sub-prod .sp .pic{height:110px;display:flex;align-items:center;justify-content:center}
.sub-prod .sp img{max-height:100px;object-fit:contain;margin:0 auto}
.sub-prod .sp b{display:block;margin-top:12px;font-size:14.5px;color:var(--ink)}

/* 分支品牌条 */
.brand-strip{background:linear-gradient(180deg,#fff,var(--bg));border:1px solid var(--blue-100);border-radius:14px;padding:24px 28px;margin-top:28px}
.brand-strip h4{font-size:16px;color:var(--blue-800);margin-bottom:16px;letter-spacing:.5px}
.brand-strip .chips{display:flex;flex-wrap:wrap;gap:10px}
.brand-strip .chip{background:#fff;border:1px solid var(--line);color:var(--gray-700);font-size:13.5px;padding:7px 16px;border-radius:24px;transition:.25s}
.brand-strip .chip:hover{border-color:var(--amber);color:var(--amber-deep);background:#fffdf7}

/* 资质页大字 */
.honor-banner{background:linear-gradient(135deg,var(--blue-800),var(--blue-950));color:#fff;border-radius:var(--radius-lg);padding:48px 40px;margin-bottom:40px;text-align:center;position:relative;overflow:hidden}
.honor-banner::before{content:"";position:absolute;left:-80px;top:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(217,154,43,.16),transparent 70%)}
.honor-banner h2{font-size:clamp(26px,3vw,34px);color:#fff;letter-spacing:1px}
.honor-banner p{color:#bcd0e6;margin-top:14px;max-width:780px;margin-left:auto;margin-right:auto;font-size:15px;line-height:1.9}

/* ---------- 滚动揭示动效（克制） ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.18s}
.reveal.d3{transition-delay:.28s}.reveal.d4{transition-delay:.38s}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .g4{grid-template-columns:repeat(3,1fr)}
  .sub-prod{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat+.stat{border-left:none}
}
@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;top:0;right:-300px;width:300px;height:100vh;background:rgba(255,255,255,.98);
    -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);flex-direction:column;align-items:stretch;
    padding:76px 0 30px;box-shadow:var(--shadow-lg);transition:right .32s var(--ease);overflow-y:auto;
  }
  .nav.open{right:0}
  .nav>li{height:auto}
  .nav>li>a{height:auto;padding:17px 26px;border-bottom:1px solid var(--line);font-size:16px}
  .nav>li>a::after{display:none}
  .nav .dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;min-width:auto;border:none;display:none;background:var(--bg)}
  .nav>li.open .dropdown{display:block}
  .nav .dropdown a{padding:12px 40px}
  .nav .dropdown a::after{display:none}
  .about-intro,.contact-wrap,.two-col{grid-template-columns:1fr}
  .about-intro .figure .frame img{height:360px}
  .side-nav{position:static}
  .hero{min-height:560px}
  .hero h1{font-size:clamp(30px,6vw,42px)}
  .client-list,.case-grid{grid-template-columns:repeat(2,1fr)}
  .g2{grid-template-columns:1fr}
}
@media (max-width:600px){
  .g4,.g3,.sub-prod{grid-template-columns:repeat(2,1fr)}
  .stats,.client-list,.case-grid,.cert-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .hero{min-height:480px}
  .hero p{font-size:15px}
  .hero .hero-meta{gap:22px;margin-top:36px}
  .hero .scroll-hint{display:none}
  .page-banner{min-height:200px}
  .page-card{padding:28px 20px}
  .tl-item{width:100%;left:0 !important;text-align:left;padding-left:36px;padding-right:0}
  .tl-line{left:16px;transform:none}
  .tl-item:nth-child(odd) .dot,.tl-item:nth-child(even) .dot{left:9px;right:auto}
  .header-inner{height:66px}
  .brand img{height:38px}
  .about-intro .figure .badge{left:10px}
  .about-intro .feat{grid-template-columns:1fr}
}

/* 尊重减少动态偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  .hero .bg{transform:none}
}

/* ---------- 语言切换器（多语言站点导航） ---------- */
.lang-switch{position:relative;display:inline-flex;margin-left:12px}
.lang-switch .lang-btn{
  display:flex;align-items:center;gap:5px;font-family:inherit;font-size:12.5px;letter-spacing:.4px;
  color:#d9e6f5;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);
  border-radius:6px;padding:3px 10px;cursor:pointer;transition:all .2s var(--ease);
}
.lang-switch .lang-btn:hover{background:rgba(217,154,43,.16);border-color:rgba(217,154,43,.5);color:var(--amber-soft)}
.lang-switch .lang-btn .arr{font-size:8px;color:var(--amber-soft);transition:transform .25s var(--ease)}
.lang-switch:hover .lang-btn .arr{transform:rotate(180deg)}
.lang-switch .lang-menu{
  position:absolute;top:calc(100% + 7px);right:0;min-width:140px;margin:0;padding:6px;list-style:none;
  background:linear-gradient(180deg,var(--blue-900),var(--blue-950));
  border:1px solid rgba(217,154,43,.4);border-radius:10px;
  box-shadow:0 14px 32px rgba(5,20,40,.5),0 2px 8px rgba(5,20,40,.35);
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:all .25s var(--ease);z-index:300;
}
.lang-switch:hover .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-switch.open .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-switch.open .lang-btn .arr{transform:rotate(180deg)}
.lang-switch .lang-menu li{margin:0}
.lang-switch .lang-menu a{
  display:block;padding:7px 12px;margin:0;border-radius:7px;font-size:13px;color:#cfe0f2;
  white-space:nowrap;transition:all .18s var(--ease);
}
.lang-switch .lang-menu a:hover{background:rgba(217,154,43,.14);color:var(--amber-soft);padding-left:16px}
.lang-switch .lang-menu a.active{
  background:linear-gradient(135deg,rgba(217,154,43,.28),rgba(217,154,43,.1));
  color:var(--amber-soft);font-weight:600;border:1px solid rgba(217,154,43,.45);
}
@media (max-width:600px){
  .lang-switch{margin-left:6px}
  .lang-switch .lang-btn{padding:2px 8px}
  .lang-switch .lang-menu{right:auto;left:0;min-width:128px}
}