:root{
  --blue:#12457e; --blue-2:#1a5cab; --ink:#1d2430; --gray:#f4f6f9;
  --line:#e3e8ef; --muted:#66738a; --gold:#c9a24a;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{width:min(1180px,92%);margin:0 auto}

/* 顶部 */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:12px}
.logo .mark{display:flex;align-items:center;height:48px}
.logo .mark img{height:44px;width:auto;display:block}
.logo .name{font-size:19px;font-weight:700;letter-spacing:.5px;display:flex;flex-direction:column;line-height:1.25}
.logo .name small{font-size:12px;font-weight:400;color:var(--muted);letter-spacing:0}
nav{display:flex;align-items:center;gap:26px;font-size:15px}
nav a:hover{color:var(--blue-2)}
nav .tel{background:var(--blue);color:#fff;padding:8px 16px;border-radius:999px;font-weight:600}
nav .tel:hover{background:var(--blue-2);color:#fff}

/* 首屏 */
.hero{position:relative;height:520px;overflow:hidden;background:#0d2a4d}
.hero img{width:100%;height:100%;object-fit:cover;object-position:center 35%;opacity:.92}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,28,54,.82) 0%,rgba(10,35,66,.55) 45%,rgba(10,35,66,.15) 100%)}
.hero-text{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;color:#fff}
.hero-text h1{font-size:44px;letter-spacing:1px;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.hero-text .slogan{margin-top:10px;font-size:17px;color:#d7e6ff}
.hero-text .sub{margin-top:18px;font-size:16px;line-height:2;color:#eaf1fb}
.btns{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 28px;border-radius:8px;font-size:16px;font-weight:600;transition:.2s}
.btn.primary{background:#fff;color:var(--blue)}
.btn.primary:hover{background:#e8f0ff}
.btn.ghost{border:1.5px solid rgba(255,255,255,.75);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.14)}

/* 数据条 */
.stats{background:var(--blue);color:#fff}
.stats .grid4{display:grid;grid-template-columns:repeat(4,1fr);text-align:center;padding:26px 0}
.stats b{display:block;font-size:30px;letter-spacing:1px}
.stats .unit{font-size:16px;margin-left:2px}
.stats span{font-size:14px;color:#c9dbf5}

/* 通用区块 */
.section{padding:74px 0}
.section.gray{background:var(--gray)}
.title{font-size:30px;text-align:center;letter-spacing:1px}
.title:after{content:"";display:block;width:54px;height:3px;background:var(--gold);margin:14px auto 0;border-radius:2px}
.title.left{text-align:left}
.title.left:after{margin-left:0}
.title-sub{text-align:center;color:var(--muted);margin-top:14px;font-size:15px}

/* 产品卡片 */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:44px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(18,69,126,.12);border-color:#cfdcf0}
.card img{width:100%;height:230px;object-fit:cover}
.card-body{padding:20px 22px 24px}
.card h3{font-size:19px;margin-bottom:8px;color:var(--blue)}
.card p{font-size:14.5px;color:#4b5768;line-height:1.85}

/* 工厂图集 */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.gallery figure{overflow:hidden;border-radius:12px;background:#fff}
.gallery img{width:100%;height:190px;object-fit:cover;transition:.35s}
.gallery figure:hover img{transform:scale(1.05)}
.gallery .big{grid-column:span 2;grid-row:span 2}
.gallery .big img{height:394px}

.equip,.mats{margin-top:44px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 28px}
.equip h3,.mats h3{font-size:19px;color:var(--blue);margin-bottom:14px}
.equip ul{display:flex;flex-wrap:wrap;gap:12px;list-style:none}
.equip li{background:#eef4fd;color:#24528f;padding:8px 16px;border-radius:999px;font-size:14.5px}
.mat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:14px}
.mat-grid img{height:180px;object-fit:cover;border-radius:10px}
.mats-tip{font-size:14.5px;color:var(--muted);line-height:1.9}

/* 资质 */
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:42px}
.honor{border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:10px;padding:22px 22px 24px;background:#fff}
.honor h3{font-size:17px;color:var(--blue);margin-bottom:10px}
.honor p{font-size:14px;color:#4b5768;line-height:1.9}

/* 联系我们 */
.contact{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:start}
.contact-list{list-style:none;margin-top:28px}
.contact-list li{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15.5px}
.contact-list b{flex:0 0 96px;color:var(--blue)}
.contact-list a{color:var(--blue-2)}
.contact-list a:hover{text-decoration:underline}
.note{margin-top:20px;font-size:14px;color:var(--muted);line-height:1.95}
.map-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.map-card img{width:100%;height:280px;object-fit:cover}
.map-card p{padding:16px 18px;font-size:14px;color:var(--muted)}

/* 通用产品板块：4 图 + 两栏 */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.feat-grid img{width:100%;height:250px;object-fit:cover;border-radius:12px;transition:.35s}
.feat-grid figure{overflow:hidden;border-radius:12px;background:#fff}
.feat-grid figure:hover img{transform:scale(1.04)}
.feat-cols{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:36px}
.feat-cols h3{font-size:19px;color:var(--blue);margin-bottom:14px}
.ticks.dark li{color:#4b5768}
.chips.dark span{background:#eef4fd;border:1px solid #d8e5f7;color:#24528f}
.feat-note{margin-top:16px;font-size:14.5px;color:var(--muted);line-height:1.95}

/* 车载旅行床 */
.section.dark{background:linear-gradient(160deg,#0d2b50 0%,#12457e 55%,#1a5cab 100%);color:#fff}
.title.light{color:#fff}
.title.light:after{background:#e0c477}
.title-sub.light{color:#c3d6f0}
.car-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:40px}
.car-grid figure{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:14px;overflow:hidden}
.car-grid img{width:100%;height:300px;object-fit:cover}
.car-grid figcaption{padding:12px 16px;font-size:14.5px;color:#dbe7f8}
.car-info{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:36px}
.car-info h3{font-size:19px;margin-bottom:14px;color:#fff}
.ticks{list-style:none}
.ticks li{position:relative;padding:7px 0 7px 26px;font-size:15px;color:#dbe7f8}
.ticks li:before{content:"✓";position:absolute;left:0;top:7px;color:#7fd4a8;font-weight:700}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);border-radius:999px;padding:8px 16px;font-size:14px}
.car-note{margin-top:16px;font-size:14px;color:#a9c2e2;line-height:1.9}

/* 资质证书 */
.honor-wrap{margin-top:42px}
.cert{margin-top:26px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center}
.cert img{max-width:520px;margin:0 auto;border-radius:8px}
.cert figcaption{margin-top:12px;font-size:14px;color:var(--muted)}

footer{background:#0e2a4d;color:#c9d9ee;padding:28px 0;text-align:center;font-size:14.5px}
footer .small{margin-top:8px;font-size:13px;color:#93aac8}
footer .beian{color:#93aac8}
footer .beian:hover{color:#e3edf9;text-decoration:underline}

/* 移动端 */
@media (max-width:900px){
  .topbar .wrap{height:auto;flex-direction:column;gap:10px;padding:12px 0}
  nav{flex-wrap:wrap;justify-content:center;gap:14px;font-size:14px}
  .hero{height:auto;padding:70px 0 60px}
  .hero img{position:absolute;inset:0;height:100%}
  .hero-text{position:relative;inset:auto}
  .hero-text h1{font-size:28px}
  .hero-text .sub{font-size:14.5px;line-height:1.9}
  .stats .grid4{grid-template-columns:repeat(2,1fr);gap:18px}
  .cards{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .gallery .big{grid-column:span 2;grid-row:auto}
  .gallery .big img{height:220px}
  .gallery img{height:150px}
  .mat-grid{grid-template-columns:repeat(2,1fr)}
  .honor-grid{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .car-grid{grid-template-columns:1fr}
  .car-grid img{height:220px}
  .car-info{grid-template-columns:1fr;gap:24px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid img{height:170px}
  .feat-cols{grid-template-columns:1fr;gap:24px}
  .section{padding:52px 0}
}