/* NingBo CM Industry Ltd. — cmecoconstruction.com */
:root{
  --navy:#0a1a36; --navy2:#12315e; --accent:#ffd23f; --ink:#1c2434;
  --muted:#5b6474; --line:#e4e8ef; --bg:#f5f7fa; --white:#fff;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Arial,"Helvetica Neue",Helvetica,"Segoe UI",sans-serif;color:var(--ink);background:var(--white);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--navy2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
h1{font-size:2rem;line-height:1.25;color:var(--navy)}
h2{font-size:1.45rem;color:var(--navy);margin:1.6rem 0 .8rem}
.lead{color:var(--muted);max-width:760px}
.btn{display:inline-block;background:var(--accent);color:var(--navy);font-weight:700;padding:.7rem 1.5rem;border-radius:4px;margin:.4rem .6rem .4rem 0;border:2px solid var(--accent)}
.btn:hover{text-decoration:none;filter:brightness(.95)}
.btn-ghost{background:transparent;color:var(--navy2);border-color:var(--navy2)}
.btn-light{background:var(--accent);color:var(--navy)}
section{padding:2.2rem 0}

/* header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(0,0,0,.25)}
.header-in{display:flex;align-items:center;justify-content:space-between;padding-top:.7rem;padding-bottom:.7rem}
.brand{display:flex;align-items:center;gap:.7rem;color:#fff}
.brand:hover{text-decoration:none}
.brand-mark{background:var(--accent);color:var(--navy);font-weight:800;font-size:1.35rem;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;letter-spacing:-1px}
.brand-name{font-weight:700;font-size:1.05rem;line-height:1.2}
.brand-name small{display:block;font-weight:400;font-size:.72rem;color:#9fb3d4}
.main-nav a{color:#e8edf6;font-weight:600;font-size:.92rem;margin-left:1.4rem;padding:.3rem 0}
.main-nav a:hover,.main-nav a.active{color:var(--accent);text-decoration:none}
.nav-toggle{display:none}
.nav-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px}
.nav-burger span{width:24px;height:3px;background:#fff;border-radius:2px}
.cat-bar{background:var(--navy2)}
.cat-bar-in{position:relative;padding-top:.45rem;padding-bottom:.45rem}
.cat-bar-label{color:#fff;font-size:.88rem;font-weight:600;cursor:pointer;display:inline-block}
.cat-dropdown{display:none;position:absolute;left:0;top:100%;background:#fff;color:var(--ink);border:1px solid var(--line);border-top:3px solid var(--accent);box-shadow:0 12px 30px rgba(0,0,0,.18);padding:1.1rem 1.3rem;grid-template-columns:repeat(4,minmax(180px,1fr));gap:1rem 1.6rem;min-width:820px;z-index:60}
.cat-bar-in:hover .cat-dropdown{display:grid}
.dd-col{display:flex;flex-direction:column}
.dd-head{font-weight:700;color:var(--navy);font-size:.85rem;text-transform:uppercase;letter-spacing:.4px;margin-bottom:.35rem}
.dd-col a{font-size:.86rem;color:var(--muted);padding:.12rem 0}
.dd-col a:hover{color:var(--navy2)}

/* hero */
.hero{background:var(--navy) url("img/banner-home.webp") center/cover no-repeat;color:#fff;padding:6rem 0 6.5rem}
.hero-in{max-width:640px}
.hero h1{color:#fff;font-size:2.6rem;margin-bottom:1rem;text-shadow:0 2px 14px rgba(0,0,0,.45)}
.hero-sub{color:#dbe4f2;font-size:1.06rem;margin-bottom:1.4rem;text-shadow:0 1px 8px rgba(0,0,0,.4)}

/* grids & cards */
.grid{display:grid;gap:1.1rem}
.groups{grid-template-columns:repeat(4,1fr)}
.cards{grid-template-columns:repeat(4,1fr)}
.gcard{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:box-shadow .2s}
.gcard:hover{text-decoration:none;box-shadow:0 8px 24px rgba(10,26,54,.12)}
.gcard-img{background:#fff;height:170px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line)}
.gcard-img img{max-height:160px;object-fit:contain}
.gcard-body{padding:.7rem .9rem .9rem;display:flex;flex-direction:column;gap:.15rem}
.gcard-body strong{color:var(--navy);font-size:.95rem}
.gcard-body small{color:var(--muted);font-size:.78rem}
.gcard-body em{color:var(--navy2);font-size:.78rem;font-style:normal;font-weight:600}
.card{border:1px solid var(--line);border-radius:6px;background:#fff;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s}
.card:hover{text-decoration:none;box-shadow:0 8px 24px rgba(10,26,54,.12)}
.card-img{height:180px;display:flex;align-items:center;justify-content:center;background:#fff;border-bottom:1px solid var(--line)}
.card-img img{max-height:170px;object-fit:contain}
.card-name{padding:.6rem .8rem .2rem;font-weight:700;color:var(--navy);font-size:.92rem}
.card-des{padding:0 .8rem .7rem;color:var(--muted);font-size:.8rem}
.no-img{color:var(--muted);font-weight:700}
.group-title{margin-top:2.4rem;border-left:5px solid var(--accent);padding-left:.7rem}
.more{text-align:center;margin-top:1.6rem}

/* why */
.why{background:var(--bg)}
.why-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:2.4rem;align-items:center}
.ticks{list-style:none;margin:0 0 1.2rem}
.ticks li{padding:.45rem 0 .45rem 1.9rem;position:relative;color:#33405a}
.ticks li::before{content:"✓";position:absolute;left:0;top:.45rem;background:var(--accent);color:var(--navy);font-weight:800;width:1.25rem;height:1.25rem;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem}
.why-img img{border-radius:6px;box-shadow:0 10px 30px rgba(10,26,54,.18)}
.why-img figcaption,.duo figcaption{color:var(--muted);font-size:.8rem;margin-top:.4rem;text-align:center}

/* page heads, crumbs, chips */
.page-head{padding-top:2.2rem}
.crumbs{font-size:.84rem;color:var(--muted);margin-bottom:.9rem}
.crumbs .sep{margin:0 .35rem;color:#b8c0cd}
.chips{margin-top:1rem;display:flex;flex-wrap:wrap;gap:.5rem}
.chip{border:1px solid var(--line);border-radius:20px;padding:.3rem .95rem;font-size:.85rem;color:var(--muted);background:#fff}
.chip.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.chip:hover{text-decoration:none;border-color:var(--navy2)}

/* product page */
.p-main{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem;padding-top:.6rem}
.p-media>img{border:1px solid var(--line);border-radius:6px;background:#fff}
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:.6rem;margin-top:.6rem}
.gallery img{border:1px solid var(--line);border-radius:4px}
.p-des{color:var(--muted);font-size:1.05rem}
.p-tag{color:var(--navy2);font-weight:600;letter-spacing:.5px;text-transform:uppercase;font-size:.85rem}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;margin-bottom:1rem}
table.spec th,table.spec td{border:1px solid var(--line);padding:.5rem .8rem;text-align:left;vertical-align:top}
table.spec th{background:var(--bg);color:var(--navy);width:42%;font-weight:600}
.spec-note{color:var(--muted)}
.p-cta{margin-top:1.4rem;border-top:1px solid var(--line);padding-top:1.2rem}

/* prose pages */
.prose p{margin-bottom:.9rem;color:#33405a;max-width:860px}
.prose ul{margin:0 0 1rem 1.3rem;color:#33405a}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
.duo img{border-radius:6px;border:1px solid var(--line)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem}
.c-box{border:1px solid var(--line);border-radius:6px;padding:1.6rem;background:#fff}
.c-box p{margin-bottom:1rem;color:#33405a}

/* cta band */
.cta-band{background:var(--navy);color:#fff;text-align:center;padding:3rem 0;margin-top:1.5rem}
.cta-band h2{color:#fff;margin-top:0}
.cta-band p{color:#c4d2e8;max-width:620px;margin:0 auto 1.2rem}
.cta-band .btn-ghost{color:#fff;border-color:#fff}

/* footer */
.site-footer{background:var(--navy);color:#b9c6dc;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.3fr 1.2fr .8fr 1fr;gap:1.8rem;padding-top:2.4rem;padding-bottom:1.6rem}
.site-footer h3{color:#fff;font-size:.95rem;margin-bottom:.7rem}
.site-footer p{font-size:.85rem;margin-bottom:.6rem}
.site-footer a{color:#d7e0f0}
.foot-links a{display:inline-block;margin:0 .8rem .3rem 0;font-size:.82rem}
.copy{border-top:1px solid rgba(255,255,255,.12);padding-top:1rem;padding-bottom:1.1rem;font-size:.8rem;color:#8fa1c0}

/* floating mail button */
.mail-float{position:fixed;right:18px;bottom:18px;background:var(--accent);color:var(--navy);font-weight:700;padding:.75rem 1.2rem;border-radius:30px;box-shadow:0 6px 18px rgba(0,0,0,.28);z-index:70;font-size:.9rem}
.mail-float:hover{text-decoration:none}

@media(max-width:960px){
  .groups,.cards{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .cat-dropdown{grid-template-columns:repeat(2,1fr);min-width:0;width:calc(100vw - 40px)}
}
@media(max-width:720px){
  .main-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--navy2);padding:1rem 20px;flex-direction:column}
  .main-nav a{margin:0;padding:.55rem 0;display:block}
  .nav-burger{display:flex}
  .nav-toggle:checked~.main-nav{display:flex}
  .site-header{position:relative}
  .hero{padding:3.6rem 0}
  .hero h1{font-size:1.9rem}
  .groups,.cards{grid-template-columns:repeat(2,1fr)}
  .why-grid,.p-main,.contact-grid,.duo{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(3,1fr)}
}