:root{
  --brand:#FFD600;
  --brand-deep:#E0B400;          /* 金色调深：hover/active 用，增加层次 */
  --brand-ink:#15233B;           /* 墨蓝：标签/小标题文字 */
  --ink:#16181D;                 /* 正文近黑，保证可读性 */
  --navy:#15233B;                /* 大面积深色底：墨蓝，更具印务质感 */
  --navy-2:#1E2F4A;
  --ink-2:#2A2D33;
  --paper:#FFFFFF;
  --paper-2:#F6F4EF;
  --muted:#5C5C5C;
  --border:#E6E4DE;
  --radius:14px;
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{line-height:1.25;font-weight:700}

/* ---------- NAV ---------- */
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink)}
.logo .mark{width:32px;height:32px;border-radius:9px;background:var(--brand);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:18px;font-weight:700}
.nav-links{display:flex;gap:30px;list-style:none}
.nav-links a{font-size:15px;font-weight:500;color:var(--ink);padding:6px 0;position:relative;transition:color .2s}
.nav-links a:hover{color:var(--ink-2)}
.nav-links a.active::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:3px;background:var(--brand);border-radius:2px}
.nav-cta{padding:10px 20px!important;font-size:14px!important}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;border:1.5px solid transparent;transition:.2s;font-family:inherit}
.btn-primary{background:var(--brand);color:var(--ink)}
.btn-primary:hover{background:var(--brand-deep)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.btn-ghost:hover{border-color:#fff}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--ink)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- HERO ---------- */
.hero{background:var(--navy);color:#fff;padding:84px 0 92px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;left:-140px;bottom:-160px;width:460px;height:460px;border-radius:50%;background:var(--brand);opacity:.08}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:var(--brand);opacity:.10}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;z-index:1}
.eyebrow{display:inline-block;background:var(--brand);color:var(--ink);font-size:13px;font-weight:700;padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:52px;line-height:1.12;margin-bottom:20px}
.hero h1 .accent{color:var(--brand)}
.hero-slogan{display:inline-block;margin:4px 0 22px;font-size:18px;font-weight:700;color:var(--brand);letter-spacing:.5px}
.hero p.lead{color:#C9CBD1;font-size:18px;max-width:540px;margin-bottom:32px}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:42px;margin-top:50px;flex-wrap:wrap}
.hero-stats .num{font-size:30px;font-weight:700;color:var(--brand)}
.hero-stats .lbl{font-size:14px;color:#C9CBD1;margin-top:4px}

/* HERO VISUAL — 真实工厂实拍 */
.hero-visual{position:relative;height:440px;border-radius:18px;overflow:hidden;box-shadow:0 24px 60px rgba(0,0,0,.42)}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual .hv-cap{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;background:linear-gradient(transparent,rgba(0,0,0,.72));color:#fff;font-size:14px;font-weight:500;display:flex;align-items:center;gap:8px}
.hero-visual .hv-cap::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);flex-shrink:0}

/* ---------- SECTION ---------- */
section{padding:88px 0}
.section-head{text-align:center;max-width:700px;margin:0 auto 52px}
.section-head .tag{display:inline-block;background:var(--brand);color:var(--ink);font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;margin-bottom:14px}
.section-head h2{font-size:34px;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
.bg-soft{background:var(--paper-2)}

/* ---------- GRID / CARDS ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:.2s}
.card:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 10px 28px rgba(22,24,29,.08)}
.card .icon{width:50px;height:50px;border-radius:12px;background:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:24px}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px}
.card .card-more{display:inline-block;margin-top:14px;color:var(--brand-ink);font-weight:600;font-size:14px;transition:.2s}
.card:hover .card-more{color:var(--ink-2)}

/* ---------- INTRO (公司简介) ---------- */
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.intro-grid p{color:var(--muted);margin-bottom:16px;font-size:16px}
.intro-visual{height:380px;border-radius:18px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;background:var(--ink)}
.intro-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.82}
.intro-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(22,24,29,.55),rgba(22,24,29,.2))}
.intro-visual .iv-text{color:#fff;font-size:22px;font-weight:700;z-index:1;text-align:center;line-height:1.6}
.intro-visual .iv-text span{color:var(--brand)}

/* ---------- QUALITY (品质指标三元组) ---------- */
.quality-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quality .q{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:.2s}
.quality .q:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 10px 28px rgba(22,24,29,.08)}
.quality .q .num{font-size:40px;font-weight:700;color:var(--navy);line-height:1}
.quality .q .en{font-size:12px;color:var(--brand-ink);font-weight:700;letter-spacing:1.5px;margin:10px 0 8px;text-transform:uppercase}
.quality .q .desc{font-size:14px;color:var(--muted)}

/* ---------- CERTS (认证徽章) ---------- */
.certs{display:flex;flex-wrap:wrap;gap:16px;justify-content:center}
.cert{display:flex;align-items:center;gap:10px;background:var(--paper);border:1px solid var(--border);border-radius:999px;padding:13px 24px;font-weight:600;font-size:15px}
.cert .dot{width:10px;height:10px;border-radius:50%;background:var(--brand);flex-shrink:0}
.cert.dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.cert.dark .dot{background:var(--brand)}

/* ---------- CASES (案例展示) ---------- */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.2s}
.case:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 12px 30px rgba(22,24,29,.10)}
.case .thumb{height:210px;background-size:cover;background-position:center;position:relative}
.case .thumb .c-label{position:absolute;left:16px;bottom:14px;background:rgba(22,24,29,.78);color:#fff;font-weight:700;font-size:14px;letter-spacing:1px;padding:5px 12px;border-radius:8px}
.case .body{padding:20px}
.case .body h3{font-size:18px;margin-bottom:8px}
.case .body .tag{color:var(--brand-ink);background:var(--brand);display:inline-block;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}

/* ---------- ABOUT ---------- */
.about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about-wrap p{color:var(--muted);margin-bottom:16px;font-size:16px}
.timeline{margin-top:14px;border-left:2px solid var(--brand);padding-left:22px;display:flex;flex-direction:column;gap:22px}
.timeline .item .yr{font-weight:700;color:var(--ink);font-size:15px}
.timeline .item .txt{color:var(--muted);font-size:14px}
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:8px}
.values .v{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.values .v h4{font-size:17px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.values .v h4::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--brand)}
.values .v p{color:var(--muted);font-size:14px}

/* ---------- SERVICES ---------- */
.svc-block{margin-bottom:48px}
.svc-block h3{font-size:22px;margin-bottom:20px;display:flex;align-items:center;gap:10px}
.svc-block h3::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--brand)}
.feature{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature .f{background:var(--paper-2);border-radius:var(--radius);padding:24px}
.feature .f h4{font-size:16px;margin-bottom:6px}
.feature .f p{color:var(--muted);font-size:14px}

/* ---------- GUARANTEES (服务承诺) ---------- */
.guarantees{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.guarantee{display:flex;gap:14px;align-items:flex-start;background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:22px}
.guarantee .gx{width:38px;height:38px;border-radius:10px;background:var(--brand);color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;font-size:16px}
.guarantee h4{font-size:15px;margin-bottom:4px}
.guarantee p{font-size:13px;color:var(--muted)}

/* ---------- PROCESS (服务流程) ---------- */
.process-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.step{background:var(--paper);border:1px solid var(--border);border-radius:var(--radius);padding:26px 20px;transition:.2s}
.step:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 10px 28px rgba(22,24,29,.08)}
.step .no{width:40px;height:40px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;margin-bottom:14px;font-size:15px}
.step h4{font-size:16px;margin-bottom:6px}
.step p{font-size:13px;color:var(--muted)}

/* ---------- NEWS ---------- */
.news-list{display:flex;flex-direction:column}
.news-row{display:flex;align-items:center;gap:24px;padding:20px 4px;border-bottom:1px solid var(--border)}
.news-row .date{color:var(--brand-ink);font-weight:700;font-size:14px;min-width:96px}
.news-row .ttl{font-size:16px;flex:1}
.news-row .ttl:hover{color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta{background:var(--navy);color:#fff;text-align:center;padding:80px 0}
.cta h2{font-size:38px;margin-bottom:14px}
.cta p{color:#C9CBD1;font-size:18px;margin-bottom:30px}
.cta .phone{margin-top:24px;color:#C9CBD1;font-size:16px}

/* ---------- CONTACT ---------- */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.form label{display:block;font-size:14px;font-weight:500;margin-bottom:8px}
.form input,.form textarea{width:100%;padding:13px 16px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;margin-bottom:18px;background:var(--paper);color:var(--ink)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--brand)}
.info-item{display:flex;gap:14px;margin-bottom:24px}
.info-item .ic{width:44px;height:44px;border-radius:11px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:20px}
.info-item .k{font-size:13px;color:var(--muted)}
.info-item .v{font-size:16px;font-weight:600}
.form-ok{display:none;background:var(--paper-2);border:1px solid var(--brand);border-radius:10px;padding:14px 16px;color:var(--ink);font-size:14px;margin-top:6px}
.form-ok.show{display:block}

/* ---------- FOOTER ---------- */
.footer{background:var(--navy);color:#C9CBD1;padding:60px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer .logo{color:#fff}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer ul a{color:#C9CBD1;font-size:14px}
.footer ul a:hover{color:#fff}
.footer .desc{font-size:14px;margin:14px 0;max-width:300px}
.swatch{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#8A8D94;margin-top:6px}
.swatch i{width:16px;height:16px;border-radius:4px;background:var(--brand);display:inline-block}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;display:flex;justify-content:space-between;font-size:13px;color:#8A8D94;flex-wrap:wrap;gap:8px}

/* ---------- CAROUSEL (轮播) ---------- */
.carousel{position:relative;width:100%;border-radius:var(--radius);overflow:hidden;background:var(--navy)}
.carousel-track{display:flex;transition:transform .6s cubic-bezier(.4,0,.2,1)}
.carousel-slide{min-width:100%}
.carousel-slide img{width:100%;height:480px;object-fit:cover;display:block}
.carousel-slide .cs-cap{position:absolute;left:0;right:0;bottom:0;padding:46px 24px 54px;background:linear-gradient(transparent,rgba(0,0,0,.72));color:#fff;font-size:16px;font-weight:600;display:flex;align-items:center;gap:10px}
.carousel-slide .cs-cap::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);flex-shrink:0}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;background:rgba(22,24,29,.45);border:0;color:#fff;font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s;z-index:2}
.carousel-btn:hover{background:var(--brand);color:var(--ink)}
.carousel-btn.prev{left:16px}
.carousel-btn.next{right:16px}
.carousel-dots{position:absolute;left:0;right:0;bottom:16px;display:flex;justify-content:center;gap:10px;z-index:2}
.carousel-dots .dot{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);border:0;cursor:pointer;padding:0;transition:.2s}
.carousel-dots .dot.active{background:var(--brand);width:26px;border-radius:6px}

/* ---------- SECONDARY / DETAIL PAGES ---------- */
.subhero{background:var(--navy);color:#fff;padding:54px 0 60px}
.breadcrumb{font-size:14px;color:#9aa0ac;margin-bottom:18px}
.breadcrumb a{color:#C9CBD1}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{color:var(--brand)}
.subhero .eyebrow{margin-bottom:14px}
.subhero h1{font-size:40px;margin-bottom:14px}
.subhero .lead{color:#C9CBD1;font-size:17px;max-width:680px}
.detail-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:48px;align-items:start}
.detail-main h2{font-size:24px;margin:34px 0 14px}
.detail-main h2:first-child{margin-top:0}
.detail-main p{color:var(--muted);font-size:16px;margin-bottom:14px}
.detail-side{position:sticky;top:88px}
.detail-side h3{font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.detail-side h3::before{content:"";width:10px;height:10px;border-radius:3px;background:var(--brand)}
.spec{list-style:none;margin-bottom:22px}
.spec li{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border);font-size:14px}
.spec li .k{color:var(--muted)}
.spec li .v{font-weight:600}
.detail-side .btn{width:100%;justify-content:center}

/* ---------- RESPONSIVE ---------- */
@media(max-width:980px){
  .grid-3,.values,.feature,.cases-grid,.quality-grid,.guarantees{grid-template-columns:repeat(2,1fr)}
  .process-steps{grid-template-columns:repeat(3,1fr)}
  .about-wrap,.contact-wrap,.intro-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{height:320px;margin-top:8px}
  .carousel-slide img{height:400px}
  .detail-grid{grid-template-columns:1fr}
  .detail-side{position:static;margin-top:8px}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:68px;left:0;right:0;background:#fff;padding:18px 24px;gap:14px;border-bottom:1px solid var(--border);box-shadow:0 10px 24px rgba(0,0,0,.08)}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero h1{font-size:36px}
  .hero-stats{gap:28px}
  .grid-3,.grid-2,.values,.feature,.cases-grid,.quality-grid,.guarantees,.process-steps{grid-template-columns:1fr}
  .section-head h2{font-size:27px}
  .cta h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  section{padding:64px 0}
  .carousel-slide img{height:300px}
  .carousel-btn{width:38px;height:38px;font-size:18px}
  .subhero{padding:40px 0 44px}
  .subhero h1{font-size:30px}
}