/* =====================================================================
   郑州中意矿山机械有限公司 — Global Design System
   Style: 大气 / 大开大合 / 无框框布局 (Grand, expansive, borderless)
   Palette: deep industrial navy + ore-gold accent on clean paper
   ===================================================================== */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",
    -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:var(--paper);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
:focus-visible{outline:3px solid #3273d1;outline-offset:3px}

/* ---------- Tokens ---------- */
:root{
  --ink:#0c1622;
  --ink-2:#10202f;
  --steel:#1d3b50;
  --steel-2:#27506b;
  --gold:#f5a524;
  --gold-2:#ffbf4d;
  --gold-deep:#d9870a;
  --paper:#f6f7f9;
  --paper-2:#eef1f4;
  --text:#16242f;
  --muted:#5d6e7d;
  --line:rgba(255,255,255,.14);
  --line-d:rgba(14,28,42,.10);
  --container:1320px;
  --radius:18px;
  --shadow:0 24px 60px -24px rgba(12,22,34,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Helpers ---------- */
.container{width:min(var(--container),92vw);margin-inline:auto}
.section{padding:clamp(72px,8vw,70px) 0;position:relative}
.section--tight{padding:clamp(54px,8vw,110px) 0}
.band-dark{background:var(--ink);color:#eaf0f5}
.band-dark .muted,.band-dark .lead{color:#9fb1c0}
.band-steel{background:linear-gradient(135deg,var(--steel),var(--ink-2));color:#eaf0f5}
.band-paper{background:var(--paper)}
.band-grad{background:#0e1b29;color:#ffbf4d;}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:.82rem;letter-spacing:.32em;text-transform:uppercase;
  font-weight:700;color:#3273d1;margin-bottom:22px;
}
.eyebrow::before{content:"";width:42px;height:2px;background:#3273d1;display:inline-block}
.eyebrow--light{color:var(--gold-2)}
.h-title{
  font-size:clamp(2rem,4.4vw,3.6rem);
  line-height:1.08;font-weight:800;letter-spacing:-.01em;
}
.h-title .accent{color:#3273d1}
.lead{font-size:clamp(1rem,1.4vw,1.22rem);color:var(--muted);max-width:60ch;margin-top:20px}
.measure{max-width:62ch}

/* ---------- Buttons ---------- */
.btn{
  --bg:var(--gold-2);--fg:#1a1205;
  display:inline-flex;align-items:center;gap:12px;
  padding:15px 30px;border-radius:999px;font-weight:700;font-size:.98rem;
  background:var(--bg);color:var(--fg);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .3s;
  box-shadow:0 14px 30px -12px rgba(245,165,36,.7);
}
.btn:hover{transform:translateY(-3px);box-shadow:0 22px 44px -14px rgba(245,165,36,.85)}
.btn svg{width:18px;height:18px;transition:transform .35s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--ghost{--bg:transparent;--fg:#eaf0f5;box-shadow:none;border:1.5px solid var(--line)}
.btn--ghost:hover{background:rgba(255,255,255,.08);box-shadow:none}
.btn--dark{--bg:var(--ink);--fg:#fff;box-shadow:0 14px 30px -14px rgba(12,22,34,.6)}
.btn--dark:hover{background:#15293b}
.btn-row{display:flex;flex-wrap:wrap;gap:16px}

/* =====================================================================
   NAVIGATION — full-width, transparent over hero, solid on scroll
   (inspired by ldsteelstructure grid nav: clean horizontal signal menu)
   ===================================================================== */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:60;
  transition:background .4s var(--ease),box-shadow .4s var(--ease),padding .4s var(--ease);
  padding:22px 0;
}
.nav.is-solid{background:rgba(10,18,28,.92);backdrop-filter:blur(14px);box-shadow:0 10px 40px -20px rgba(0,0,0,.7);padding:12px 0}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px;color:#fff}
.brand__mark{
  width:202px;height:52px;flex:none;
  background:url(../images/logo1.png);
  display:grid;place-items:center;font-weight:900;color:#1a1205;font-size:1.2rem;
  /*box-shadow:0 10px 24px -10px rgba(245,165,36,.8);*/
}
.nav__links{display:flex;align-items:center;gap:6px}
.nav__item{position:relative}
.nav__link{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 16px;border-radius:10px;color:#e8eef3;font-weight:600;font-size:.96rem;
  transition:color .25s,background .25s;
}
.nav__link:hover{color:var(--gold-2);background:rgba(255,255,255,.06)}
.nav__item.has-mega .nav__link::after{content:"";width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.7}
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(10px);
  min-width:560px;background:#0e1b29;border:1px solid var(--line);
  border-radius:16px;padding:22px;display:grid;grid-template-columns:1fr 1fr;gap:8px;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.3s var(--ease);
}
.nav__item.has-mega:hover .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega a{padding:12px 14px;border-radius:10px;display:block;transition:.25s}
.mega a:hover{background:rgba(245,165,36,.12);color:var(--gold-2)}
.mega a b{display:block;font-weight:700;color:#fff;font-size:.95rem}
.mega a span{font-size:.8rem;color:#8aa0b0}
.nav__cta{display:flex;align-items:center;gap:14px}
.nav__phone{color:#fff;font-weight:700;font-size:.95rem;display:flex;align-items:center;gap:8px}
.nav__phone svg{width:18px;height:18px;color:#3273d1}
.burger{display:none;width:44px;height:44px;border-radius:10px;background:rgba(255,255,255,.08);place-items:center}
.burger span{display:block;width:22px;height:2px;background:#fff;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:22px;height:2px;background:#fff}
.burger span::before{top:-7px}.burger span::after{top:7px}

/* mobile drawer */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(8,14,22,.96);backdrop-filter:blur(8px);
  transform:translateX(100%);transition:transform .4s var(--ease);padding:30px;overflow:auto}
.drawer.is-open{transform:translateX(0)}
.drawer a{display:block;padding:16px 4px;color:#eaf0f5;font-size:1.15rem;font-weight:600;border-bottom:1px solid var(--line)}
.drawer .close{position:absolute;top:22px;right:22px;font-size:2rem;color:#fff;line-height:1}
.drawer .sub{padding-left:18px;font-size:.95rem;color:#9fb1c0}

/* =====================================================================
   HERO / BANNER CAROUSEL — full screen, full-bleed, auto-play
   (inspired by ldsteelstructure response-animated banner)
   ===================================================================== */
.hero{position:relative;height:100vh;height:100dvh;min-height:560px;overflow:hidden;background:var(--ink)}
.hero__track{position:absolute;inset:0}
.slide{
  position:absolute;inset:0;opacity:0;transform:scale(1.08);
  transition:opacity 1.1s var(--ease),transform 7s linear;
}
.slide.is-active{opacity:1;transform:scale(1)}
.slide__bg{position:absolute;inset:0}
.slide__bg > svg{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.slide__bg::after{content:"";position:absolute;inset:0;z-index:2;
  background:linear-gradient(90deg,rgba(8,14,22,.92) 0%,rgba(8,14,22,.55) 45%,rgba(8,14,22,.25) 100%),
             linear-gradient(0deg,rgba(8,14,22,.85),transparent 55%)}
.hero img.deco{object-position:center 30%}
@media (max-width:768px){
  .hero img.deco{object-position:center 20%}
  .hero__scroll{display:none}
  .hero__nav{bottom:22px}
}
.slide__content{position:relative;z-index:3;height:100%;display:flex;flex-direction:column;justify-content:center;padding:clamp(88px,12vh,130px) 0 clamp(96px,12vh,120px)}
.slide__content .container{width:min(var(--container),92vw)}
.slide__kicker{color:var(--gold-2);font-weight:700;letter-spacing:.3em;text-transform:uppercase;font-size:.85rem;margin-bottom:20px;
  opacity:0;transform:translateY(30px);transition:.8s var(--ease) .2s}
.slide__title{color:#fff;font-size:clamp(2.4rem,6.2vw,5.4rem);line-height:1.04;font-weight:800;letter-spacing:-.02em;max-width:18ch;
  opacity:0;transform:translateY(40px);transition:.9s var(--ease) .35s}
.slide__title .accent{color:#3273d1}
.slide__text{color:#cdd9e3;font-size:clamp(1rem,1.5vw,1.3rem);margin-top:24px;max-width:54ch;
  opacity:0;transform:translateY(40px);transition:.9s var(--ease) .5s}
.slide__actions{margin-top:38px;display:flex;gap:16px;flex-wrap:wrap;
  opacity:0;transform:translateY(40px);transition:.9s var(--ease) .65s}
.slide.is-active .slide__kicker,
.slide.is-active .slide__title,
.slide.is-active .slide__text,
.slide.is-active .slide__actions{opacity:1;transform:none}

.hero__nav{position:absolute;z-index:5;bottom:46px;left:50%;transform:translateX(-50%);width:min(var(--container),92vw);
  display:flex;align-items:center;justify-content:space-between;gap:20px}
.hero__dots{display:flex;gap:12px}
.hero__dot{width:46px;height:4px;border-radius:4px;background:rgba(255,255,255,.28);position:relative;overflow:hidden}
.hero__dot.is-active{background:rgba(255,255,255,.4)}
.hero__dot.is-active::after{content:"";position:absolute;inset:0;width:0;background:#3273d1;animation:dotfill 6s linear forwards}
@keyframes dotfill{to{width:100%}}
.hero__arrows{display:flex;gap:10px}
.hero__arrow{width:50px;height:50px;border-radius:50%;border:1.5px solid var(--line);color:#fff;display:grid;place-items:center;transition:.3s}
.hero__arrow:hover{background:#3273d1;color:#1a1205;border-color:#3273d1}
.hero__scroll{position:absolute;bottom:46px;right:max(4vw,24px);z-index:5;color:#9fb1c0;font-size:.75rem;letter-spacing:.2em;
  writing-mode:vertical-rl;display:flex;align-items:center;gap:12px}
.hero__scroll::after{content:"";width:1px;height:54px;background:linear-gradient(#3273d1,transparent)}

/* =====================================================================
   SECTION HEADER (open, no box)
   ===================================================================== */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:clamp(40px,6vw,76px)}
.sec-head__main{/*max-width:60ch*/}
.sec-head .link-more{display:inline-flex;align-items:center;gap:10px;color:#3273d1;font-weight:700;white-space:nowrap}
.sec-head .link-more svg{width:20px;height:20px;transition:transform .3s var(--ease)}
.sec-head .link-more:hover svg{transform:translateX(5px)}

/* =====================================================================
   STAT STRIP / COUNTERS
   ===================================================================== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line-d);border-bottom:1px solid var(--line-d)}
.stat{padding:42px 30px;text-align:center;border-right:1px solid var(--line-d)}
.stat:last-child{border-right:none}
.stat__num{font-size:clamp(2.4rem,4vw,3.6rem);font-weight:800;color:#999;line-height:1;letter-spacing:-.02em}
.stat__num .suffix{color:#3273d1}
.stat__label{margin-top:12px;color:var(--muted);font-size:.92rem;letter-spacing:.04em}
.band-dark .stat{border-color:var(--line)}
.band-dark .stat__num{color:#fff}
.band-dark .stat__label{color:#9fb1c0}

/* =====================================================================
   PRODUCT CATEGORIES — grand overlapping cards (inspired by china-sally home-2)
   ===================================================================== */
.prod-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.pcard{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;display:flex;align-items:flex-end;
  background:var(--ink);color:#fff;transition:transform .5s var(--ease),box-shadow .5s var(--ease)}
.pcard:hover{transform:translateY(30px);box-shadow:var(--shadow)}
.pcard__bg{position:absolute;inset:0;transition:transform .8s var(--ease)}
.pcard:hover .pcard__bg{transform:scale(1.08)}
.pcard__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,14,22,.92),rgba(8,14,22,.15) 60%,transparent)}
.pcard__body{position:relative;z-index:2;padding:30px;width:100%;background: linear-gradient(to top, #000 10%, transparent 90%);}
.pcard__no{font-size:.8rem;letter-spacing:.3em;color:var(--gold-2);font-weight:700}
.pcard__title{font-size:1.5rem;font-weight:800;margin-top:8px}
.pcard__desc{color:#cdd9e3;font-size:.92rem;margin-top:8px;max-width:34ch;opacity:0;max-height:0;overflow:hidden;transition:.45s var(--ease)}
.pcard:hover .pcard__desc{opacity:1;max-height:120px;margin-top:12px}
.pcard__link{display:inline-flex;align-items:center;gap:8px;margin-top:16px;color:var(--gold-2);font-weight:700;font-size:.9rem}
.pcard--lg{grid-column:span 6;min-height:440px}
.pcard--md{grid-column:span 3;min-height:300px}
.pcard--sm{grid-column:span 4;min-height:300px}

/* =====================================================================
   SOLUTIONS — feature band (inspired by china-sally home-1)
   ===================================================================== */
.sol-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.sol{position:relative;padding:40px 34px;border-radius:var(--radius);background:#0e1b29;border:1px solid var(--line);
  transition:.45s var(--ease);overflow:hidden}
.sol::before{content:"";position:absolute;left:0;top:0;height:4px;width:0;background:#3273d1;transition:.5s var(--ease)}
.sol:hover{transform:translateY(10px);border-color:rgba(245,165,36,.4)}
.sol:hover::before{width:100%}
.sol__icon{border-radius:14px;background:rgba(245,165,36,.14);display:grid;place-items:center;margin-bottom:22px}
.sol__icon svg{width:30px;height:30px;color:#3273d1}
.sol__title{font-size:1.35rem;font-weight:800;color:#fff}
.sol__desc{color:#9fb1c0;margin-top:12px;font-size:.95rem}
.sol__link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;color:var(--gold-2);font-weight:700;font-size:.9rem}

/* big solution split */
.sol-split{display:grid;grid-template-columns:1.05fr .95fr;gap:0;align-items:stretch;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.sol-split__media{position:relative;min-height:480px;background:var(--steel);overflow:hidden;border-radius:var(--radius)}
.sol-split__media .badge{position:absolute;left:34px;bottom:34px;z-index:3;background:rgba(8,14,22,.7);backdrop-filter:blur(8px);
  border:1px solid var(--line);border-radius:14px;padding:16px 22px;color:#fff}
.sol-split__media .badge b{color:var(--gold-2);font-size:1.5rem;display:block}
.sol-split__panel{background:#0e1b29;padding:clamp(36px,5vw,64px);color:#eaf0f5}
.sol-split__list{margin-top:26px;display:grid;gap:16px}
.sol-split__list li{display:flex;gap:14px;align-items:flex-start}
.sol-split__list .tick{flex:none;width:26px;height:26px;border-radius:50%;background:rgba(245,165,36,.16);display:grid;place-items:center;margin-top:2px}
.sol-split__list .tick svg{width:14px;height:14px;color:#3273d1}
.sol-split__list b{color:#fff;font-weight:700}
.sol-split__list span{color:#9fb1c0;font-size:.92rem}

/* =====================================================================
   CLIENT CASES — horizontal showcase (inspired by dearast index-block5)
   ===================================================================== */
.cases-scroller{display:flex;gap:26px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:18px;
  scrollbar-width:thin;scrollbar-color:#3273d1 transparent}
.cases-scroller::-webkit-scrollbar{height:6px}
.cases-scroller::-webkit-scrollbar-thumb{background:#3273d1;border-radius:6px}
.case-card{scroll-snap-align:start;flex:0 0 clamp(300px,32vw,420px);border-radius:var(--radius);overflow:hidden;background:#0e1b29;
  border:1px solid var(--line);transition:.45s var(--ease)}
.case-card:hover{transform:translateY(10px);box-shadow:var(--shadow);border-color:rgba(245,165,36,.4)}
.case-card__media{position:relative;aspect-ratio:4/3;overflow:hidden}
.case-card__media .cap{position:absolute;top:16px;left:16px;z-index:3;background:#3273d1;color:#1a1205;font-weight:800;
  font-size:.72rem;letter-spacing:.08em;padding:6px 12px;border-radius:999px}
.case-card__body{padding:26px 28px 30px}
.case-card__title{font-size:1.22rem;font-weight:800;color:#fff;line-height:1.3}
.case-card__meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:14px;color:#9fb1c0;font-size:.85rem}
.case-card__meta b{color:var(--gold-2)}

/* =====================================================================
   NEWS — modular list (inspired by csipi news modular)
   ===================================================================== */
.news-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:30px}
.news-feature{position:relative;border-radius:var(--radius);overflow:hidden;min-height:440px;display:flex;align-items:flex-end;background:var(--ink)}
.news-feature .nf-bg{position:absolute;inset:0}
.news-feature .nf-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,14,22,.92),transparent 65%)}
.news-feature__body{position:relative;z-index:2;padding:36px;width:100%;;background: linear-gradient(to top, #000 10%, transparent 90%)}
.news-feature__tag{display:inline-block;background:#3273d1;color:#1a1205;font-weight:700;font-size:.74rem;padding:5px 12px;border-radius:999px}
.news-feature__title{color:#fff;font-size:1.7rem;font-weight:800;margin-top:16px;line-height:1.25}
.news-feature__date{color:#9fb1c0;margin-top:14px;font-size:.85rem}
.news-list{display:flex;flex-direction:column}
.news-row{display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--line-d);transition:.3s}
.news-row:hover{padding-left:8px}
.news-row__date{flex:none;width:66px;text-align:center}
.news-row__date b{display:block;font-size:1.7rem;font-weight:800;color:var(--ink);line-height:1}
.news-row__date span{font-size:.72rem;color:var(--muted);letter-spacing:.1em}
.news-row__title{font-weight:700;color:var(--text);line-height:1.4}
.news-row:hover .news-row__title{color:var(--gold-2)}
.news-row__cat{font-size:.74rem;color:var(--gold-2);font-weight:700;margin-bottom:6px;display:inline-block}
.band-dark .news-row{border-color:var(--line)}
.band-dark .news-row__title{color:#eaf0f5}
.band-dark .news-row__date b{color:#fff}

/* =====================================================================
   ABOUT blocks (inspired by xksynm static sections)
   ===================================================================== */
.about-split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,90px);align-items:center}
.about-media{position:relative;border-radius:var(--radius);overflow:hidden;min-height:460px;background:var(--steel)}
.about-media .float-card{position:absolute;right:-20px;bottom:40px;background:#fff;border-radius:16px;padding:20px 26px;box-shadow:var(--shadow)}
.about-media .float-card b{display:block;font-size:2rem;font-weight:800;color:var(--ink)}
.about-media .float-card span{color:var(--muted);font-size:.85rem}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:46px}
.value{padding:30px 26px;border-radius:var(--radius);background:#0e1b29;border:1px solid var(--line);transition:.4s var(--ease)}
.value:hover{transform:translateY(10px);border-color:rgba(245,165,36,.4)}
.value__n{font-size:.8rem;letter-spacing:.2em;color:#3273d1;font-weight:700}
.value__t{color:#fff;font-weight:800;font-size:1.2rem;margin:10px 0 8px}
.value__d{color:#9fb1c0;font-size:.9rem}
.timeline{position:relative;margin-top:40px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(#3273d1,transparent)}
.tl-item{position:relative;padding:0 0 34px 22px}
.tl-item::before{content:"";position:absolute;left:-30px;top:4px;width:16px;height:16px;border-radius:50%;background:#3273d1;box-shadow:0 0 0 5px rgba(245,165,36,.2)}
.tl-item b{color:#3273d1;font-weight:800;font-size:1.05rem}
.tl-item span{color:var(--muted);display:block;margin-top:4px;font-size:.92rem}

/* =====================================================================
   CONTACT
   ===================================================================== */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.contact-info{background:linear-gradient(160deg,var(--steel),var(--ink-2));color:#eaf0f5;padding:clamp(36px,5vw,60px)}
.contact-info h3{font-size:1.6rem;font-weight:800;margin-bottom:8px}
.contact-info .ci-sub{color:#9fb1c0;margin-bottom:30px}
.ci-item{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.ci-item .ic{width:46px;height:46px;flex:none;border-radius:12px;background:rgba(245,165,36,.16);display:grid;place-items:center}
.ci-item .ic svg{width:22px;height:22px;color:#3273d1}
.ci-item b{display:block;color:#fff;font-weight:700}
.ci-item span{color:#9fb1c0;font-size:.92rem}
.contact-form{background:#fff;padding:clamp(36px,5vw,60px)}
.contact-form h3{font-size:1.5rem;font-weight:800;color:var(--ink);margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.85rem;font-weight:700;color:var(--text);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;padding:14px 16px;border:1.5px solid var(--line-d);border-radius:12px;font:inherit;background:var(--paper);
  transition:border-color .25s,box-shadow .25s;color:var(--text)}
.field input:focus,.field textarea:focus,.field select:focus{border-color:#3273d1;box-shadow:0 0 0 4px rgba(245,165,36,.15);outline:none}
.field textarea{resize:vertical;min-height:120px}
.form-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* map */
.map{height:380px;border-radius:var(--radius);overflow:hidden;background:var(--steel);position:relative}
.map img{width:100%;height:100%;object-fit:cover;display:block}
.map iframe{width:100%;height:100%;border:0;filter:grayscale(.3) contrast(1.05)}

/* =====================================================================
   FOOTER — multi column (inspired by fanhuaholdings footer)
   ===================================================================== */
.footer{background:#08111b;color:#9fb1c0;padding:clamp(56px,8vw,96px) 0 30px}
.footer__top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer__brand .brand{margin-bottom:22px}
.footer__brand p{font-size:.92rem;max-width:42ch;line-height:1.8}
.footer__social{display:flex;gap:12px;margin-top:24px}
.footer__social a{width:42px;height:42px;border-radius:10px;background:rgba(255,255,255,.06);display:grid;place-items:center;transition:.3s}
.footer__social a:hover{background:#3273d1;color:#1a1205}
.footer__social svg{width:18px;height:18px}
.footer h4{color:#fff;font-size:1.02rem;font-weight:800;margin-bottom:20px;letter-spacing:.02em}
.footer__col a{display:block;padding:8px 0;font-size:.92rem;transition:.25s;color:#9fb1c0}
.footer__col a:hover{color:var(--gold-2);padding-left:6px}
.footer__bottom{margin-top:54px;padding-top:26px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;font-size:.84rem;color:#6f8294}
.footer__bottom a{color:#6f8294}
.footer__bottom a:hover{color:var(--gold-2)}

/* =====================================================================
   PAGE HERO (subpages)
   ===================================================================== */
.page-hero{position:relative;padding:clamp(150px,18vh,220px) 0 clamp(70px,10vw,120px);background:var(--ink);color:#fff;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 500px at 80% 0%,rgba(245,165,36,.16),transparent 60%),
            radial-gradient(700px 400px at 0% 100%,rgba(39,80,107,.4),transparent 55%)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:clamp(2.2rem,5vw,4rem);font-weight:800;line-height:1.08;letter-spacing:-.02em}
.page-hero .crumb{display:flex;gap:10px;align-items:center;color:#9fb1c0;font-size:.88rem;margin-bottom:22px}
.page-hero .crumb a:hover{color:var(--gold-2)}
.page-hero .crumb span{color:#3273d1}
.page-hero p{color:#cdd9e3;margin-top:18px;max-width:58ch;font-size:1.05rem}

/* breadcrumb inline (sub pages) */
.breadcrumb{display:flex;gap:10px;align-items:center;font-size:.85rem;color:var(--muted);padding:20px 0}
.breadcrumb a:hover{color:var(--gold-2)}
.breadcrumb span{color:var(--gold-2)}

/* =====================================================================
   PRODUCT DETAIL
   ===================================================================== */
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,70px);align-items:start}
.pd-gallery .pd-main{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;background:var(--steel)}
.pd-stage{position:absolute;inset:0}
.pd-main__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;z-index:1;transition:opacity .55s ease,transform 3.5s ease}
.pd-main__img.is-active{opacity:1;z-index:2;transform:scale(1.04)}
/* nav arrows */
.pd-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border:none;border-radius:50%;background:rgba(11,24,37,.5);color:#fff;display:grid;place-items:center;cursor:pointer;z-index:3;transition:background .2s ease,transform .2s ease;backdrop-filter:blur(3px)}
.pd-nav:hover{background:var(--gold);color:#0b1825;transform:translateY(-50%) scale(1.08)}
.pd-nav:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.pd-prev{left:14px}
.pd-next{right:14px}
.pd-nav svg{width:22px;height:22px}
/* dots */
.pd-dots{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:3}
.pd-dot{width:9px;height:9px;border-radius:50%;border:none;background:rgba(255,255,255,.55);cursor:pointer;padding:0;transition:.3s ease}
.pd-dot.is-active{background:var(--gold);width:26px;border-radius:5px}
.pd-dot:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
/* thumbs */
.pd-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
.pd-thumbs button{aspect-ratio:1;border-radius:12px;overflow:hidden;background:var(--steel);border:2px solid transparent;transition:.25s;cursor:pointer;padding:0}
.pd-thumbs button img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s ease}
.pd-thumbs button:hover img{transform:scale(1.08)}
.pd-thumbs button.is-active,.pd-thumbs button:hover{border-color:var(--gold)}
.pd-info h2{font-size:clamp(1.8rem,3.4vw,2.8rem);font-weight:800;color:var(--ink);line-height:1.1}
.pd-info .pd-tags{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.pd-info .pd-tags span{background:var(--paper-2);border:1px solid var(--line-d);padding:6px 14px;border-radius:999px;font-size:.84rem;color:var(--steel-2);font-weight:600}
.pd-info p{color:var(--muted);margin-top:14px}
.pd-params{margin-top:30px;border:1px solid var(--line-d);border-radius:var(--radius);overflow:hidden}
.pd-params caption{caption-side:top;padding:16px 22px;background:var(--ink);color:#fff;font-weight:800;text-align:left}
.pd-params table{width:100%;border-collapse:collapse}
.pd-params td{padding:14px 22px;border-bottom:1px solid var(--line-d);font-size:.92rem}
.pd-params td:first-child{color:var(--steel-2);font-weight:700;width:40%}
.pd-params tr:last-child td{border-bottom:none}
.pd-params tr:nth-child(odd) td{background:var(--paper-2)}

/* feature list */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.feat{padding:30px;border-radius:var(--radius);background:#fff;border:1px solid var(--line-d);transition:.4s var(--ease)}
.feat:hover{transform:translateY(10px);box-shadow:var(--shadow)}
.feat__ic{width:54px;height:54px;border-radius:14px;background:rgba(245,165,36,.14);display:grid;place-items:center;margin-bottom:18px}
.feat__ic svg{width:26px;height:26px;color:var(--gold-2)}
.feat b{display:block;font-size:1.15rem;color:var(--ink);font-weight:800}
.feat p{color:var(--muted);margin-top:8px;font-size:.92rem}

/* related */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.rel-grid--3{grid-template-columns:repeat(3,1fr)}
.rel{background:#fff;border:1px solid var(--line-d);border-radius:var(--radius);overflow:hidden;transition:.4s var(--ease);position:relative}
.rel>div{position:relative}
.rel:hover{transform:translateY(10px);box-shadow:var(--shadow)}
.rel__media{aspect-ratio:4/3;background:var(--steel);overflow:hidden}
.rel__media img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}
.rel__body{padding:18px 20px}
.rel__body b{color:var(--ink);font-weight:800;display:block;font-size:1.05rem}

/* category "view all" link */
.more-row{display:flex;justify-content:flex-end;margin-top:26px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--steel-2);text-decoration:none;font-size:.95rem;transition:.3s var(--ease)}
.link-arrow svg{width:18px;height:18px;transition:transform .3s var(--ease)}
.link-arrow:hover{color:var(--gold-2)}
.link-arrow:hover svg{transform:translateX(5px)}

/* category icon tabs (homepage product switch) */
.cat-tabs{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;justify-content:center}
.cat-tab{display:flex;flex-direction:column;align-items:center;gap:10px;width:15%;padding:16px 10px;background:#fff;border:1px solid var(--line-d);border-radius:16px;cursor:pointer;transition:.3s var(--ease);text-decoration:none;-webkit-tap-highlight-color:transparent}
.cat-tab__ic{width:54px;height:54px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:var(--paper-2);color:var(--steel-2);transition:.3s var(--ease)}
.cat-tab__ic svg{width:28px;height:28px}
.cat-tab__txt{font-weight:700;color:var(--steel-2);font-size:.95rem;transition:.3s var(--ease);white-space:nowrap}
.cat-tab:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#3273d1}
.cat-tab.is-active{background:linear-gradient(160deg,var(--steel),#0b1825);border-color:var(--steel)}
.cat-tab.is-active .cat-tab__ic{background:#3273d1;color:#fff}
.cat-tab.is-active .cat-tab__txt{color:#fff}
@media(max-width:600px){
  .cat-tabs{gap:10px}
  .cat-tab{flex:1 1 30%;width:auto;padding:12px 6px}
  .cat-tab__ic{width:44px;height:44px}
  .cat-tab__ic svg{width:22px;height:22px}
  .cat-tab__txt{font-size:.82rem}
}

/* =====================================================================
   SOLUTION / CASE DETAIL
   ===================================================================== */
.detail-hero{position:relative;min-height:62vh;display:flex;align-items:flex-end;background:var(--ink);color:#fff;overflow:hidden}
.detail-hero .dh-bg{position:absolute;inset:0}
.detail-hero .dh-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(8,14,22,.92),rgba(8,14,22,.25))}
.detail-hero .container{position:relative;z-index:2;padding-bottom:clamp(40px,6vw,80px)}
.detail-hero .eyebrow{color:var(--gold-2)}
.detail-hero h1{font-size:clamp(2rem,4.6vw,3.6rem);font-weight:800;line-height:1.1;max-width:20ch}
.param-table{width:100%;border-collapse:collapse;margin-top:10px;border:1px solid var(--line-d);border-radius:var(--radius);overflow:hidden}
.param-table td{padding:14px 20px;border-bottom:1px solid var(--line-d);font-size:.94rem}
.param-table td:first-child{background:var(--paper-2);font-weight:700;color:var(--steel-2);width:38%}
.param-table tr:last-child td{border-bottom:none}

.prose{/*max-width:74ch*/}
.prose h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800;color:var(--ink);margin:46px 0 18px;line-height:1.2}
.prose h3{font-size:1.3rem;font-weight:800;color:var(--ink);margin:30px 0 12px}
.prose p{color:#3a4a58;margin-bottom:16px}
.prose ul{margin:0 0 18px;display:grid;gap:10px}
.prose ul li{position:relative;padding-left:26px;color:#3a4a58}
.prose ul li::before{content:"";position:absolute;left:0;top:11px;width:10px;height:10px;border-radius:3px;background:#3273d1}
.prose blockquote{border-left:4px solid #3273d1;background:var(--paper-2);padding:18px 24px;border-radius:0 12px 12px 0;margin:22px 0;color:var(--steel-2);font-style:italic}

.proc-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:30px}
.proc-step{position:relative;background:#fff;border:1px solid var(--line-d);border-radius:var(--radius);padding:26px 22px}
.proc-step .n{font-size:2.4rem;font-weight:800;color:#3273d1;opacity:.35;line-height:1}
.proc-step b{display:block;color:var(--ink);font-weight:800;margin:10px 0 6px}
.proc-step span{color:var(--muted);font-size:.9rem}

/* result metrics */
.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:30px}
.result{text-align:center;padding:34px 20px;border-radius:var(--radius);background:#0e1b29;color:#fff}
.result b{font-size:2.6rem;font-weight:800;color:var(--gold-2);display:block;line-height:1}
.result span{color:#9fb1c0;font-size:.9rem;margin-top:8px;display:block}

/* =====================================================================
   CTA banner
   ===================================================================== */
.cta-band{position:relative;border-radius:var(--radius);overflow:hidden;padding:clamp(46px,7vw,90px);background:linear-gradient(120deg,var(--steel),var(--ink-2));color:#fff;text-align:center}
.cta-band::before{content:"";position:absolute;inset:0;/*background:radial-gradient(600px 300px at 50% 0%,rgba(245,165,36,.22),transparent 60%)*/background:url(../images/co.webp) no-repeat center;background-size: 100% 100%}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{font-size:clamp(1.8rem,4vw,3rem);font-weight:800}
.cta-band p{color:#cdd9e3;margin:16px auto 30px;max-width:54ch}

/* =====================================================================
   Reveal animation
   ===================================================================== */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.1s}
.reveal[data-d="2"]{transition-delay:.2s}
.reveal[data-d="3"]{transition-delay:.3s}
.reveal[data-d="4"]{transition-delay:.4s}
.reveal[data-d="5"]{transition-delay:.5s}

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media(max-width:1080px){
  .nav__links{display:none}
  .burger{display:grid}
  .prod-grid{grid-template-columns:repeat(6,1fr)}
  .pcard--lg,.pcard--md{grid-column:span 6}
  .pcard--sm{grid-column:span 3}
  .sol-grid,.value-grid,.feat-grid,.rel-grid,.result-grid,.proc-flow{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line-d)}
  .news-grid{grid-template-columns:1fr}
  .about-split,.sol-split,.contact-grid,.pd-grid{grid-template-columns:1fr}
  .sol-split__media,.about-media,.pd-gallery{min-height:320px}
  .footer__top{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .prod-grid{grid-template-columns:1fr}
  .pcard--lg,.pcard--md,.pcard--sm{grid-column:span 1}
  .sol-grid,.value-grid,.feat-grid,.rel-grid,.result-grid,.proc-flow,.form-2{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line-d)}
  .footer__top{grid-template-columns:1fr}
  .hero__scroll{display:none}
  .nav__phone{display:none}
  .slide__title{font-size:clamp(2rem,9vw,3rem)}
}

/* ---------- Related modules (separated: products / news / cases) ---------- */
.mod-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px}
.mod-head .sec-head{margin-bottom:0}
.mod-head .more-row{margin-top:0;flex:none}
/* 1. recommended products & 3. customer cases reuse .rel-grid / .rel cards */
/* 2. related news */
.rel-news{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-news__card{display:flex;flex-direction:column;background:#fff;border-radius:18px;padding:26px 24px;box-shadow:0 12px 32px rgba(14,32,47,.07);border:1px solid transparent;transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .2s ease}
.rel-news__card:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(14,32,47,.13);border-color:var(--gold)}
.rel-news__date{display:inline-block;color:var(--gold-deep);font-size:.74rem;font-weight:800;letter-spacing:.06em;border:1px solid var(--line-d);border-radius:999px;padding:4px 12px;align-self:flex-start}
.rel-news__title{font-size:1.08rem;font-weight:800;color:var(--ink);margin:16px 0 12px;line-height:1.45}
.rel-news__ex{color:var(--muted);font-size:.9rem;line-height:1.8;flex:1}
.rel-news__more{margin-top:18px;color:var(--gold-deep);font-weight:700;font-size:.86rem;display:inline-flex;align-items:center;gap:6px;transition:gap .22s ease}
.rel-news__card:hover .rel-news__more{gap:12px}
@media (max-width:900px){ .rel-news{grid-template-columns:1fr} }

/* ---------- Floating side contact + back to top ---------- */
.side-contact{
  position:fixed; right:20px; top:50%; transform:translateY(-50%);
  z-index:80; display:flex; flex-direction:column; gap:14px;
}
.sc-item{
  position:relative; width:50px; height:50px; border-radius:50%;
  background:var(--steel); color:#fff; display:grid; place-items:center;
  box-shadow:0 8px 22px rgba(8,18,30,.25);
  transition:transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.sc-item svg{width:23px; height:23px}
.sc-item:hover{
  background:var(--gold); color:#1a1208; transform:scale(1.08);
  box-shadow:0 12px 28px rgba(245,165,36,.42);
}
.sc-tel{background:var(--gold); color:#1a1208}
.sc-tel:hover{background:var(--gold-2)}
/* tooltip label */
.sc-label{
  position:absolute; right:60px; top:50%; transform:translateY(-50%) translateX(6px);
  background:var(--ink); color:#fff; padding:5px 11px; border-radius:6px;
  font-size:.82rem; white-space:nowrap; opacity:0; pointer-events:none;
  transition:opacity .2s ease, transform .2s ease;
}
.sc-label::after{
  content:""; position:absolute; right:-5px; top:50%; transform:translateY(-50%);
  border:6px solid transparent; border-left-color:var(--ink);
}
.sc-item:hover .sc-label{opacity:1; transform:translateY(-50%) translateX(0)}
/* wechat/qq popover text */
.sc-pop{
  position:absolute; right:60px; top:50%; transform:translateY(-50%) translateX(6px);
  background:var(--ink); color:#fff; padding:7px 12px; border-radius:8px;
  font-size:.82rem; white-space:nowrap; opacity:0; pointer-events:none;
  box-shadow:0 8px 22px rgba(8,18,30,.3);
  transition:opacity .2s ease, transform .2s ease;
}
.sc-pop::after{
  content:""; position:absolute; right:-5px; top:50%; transform:translateY(-50%);
  border:6px solid transparent; border-left-color:var(--ink);
}
.sc-item:hover .sc-pop{opacity:1; transform:translateY(-50%) translateX(0)}

.back-top{
  position:fixed; right:20px; bottom:26px; z-index:80; width:50px; height:50px;
  border-radius:50%; background:var(--gold); color:#1a1208; display:grid; place-items:center;
  box-shadow:0 8px 22px rgba(245,165,36,.4);
  opacity:0; visibility:hidden; transform:translateY(14px);
  transition:opacity .3s ease, transform .3s ease, visibility .3s, background .25s ease;
}
.back-top svg{width:24px; height:24px}
.back-top:hover{background:var(--gold-2); transform:translateY(0) scale(1.06)}
.back-top.is-visible{opacity:1; visibility:visible; transform:translateY(0)}

@media (max-width:600px){
  .side-contact{right:12px; gap:11px}
  .sc-item{width:44px; height:44px}
  .sc-item svg{width:21px; height:21px}
  .sc-label,.sc-pop{display:none}      /* avoid overflow on small screens */
  .back-top{right:12px; bottom:18px; width:44px; height:44px}
}

/* reduced motion */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .slide{transform:none}
}

/* =====================================================================
   INDUSTRIAL SCENE TEXTURES (self-contained SVG, no external assets)
   Use as background layers for media blocks / hero / cards.
   ===================================================================== */
.tex-dots{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='26'%3E%3Ccircle cx='3' cy='3' r='1.4' fill='%23f5a524' opacity='0.22'/%3E%3C/svg%3E")}
.tex-grid{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cpath d='M40 0H0V40' fill='none' stroke='%23ffffff' stroke-opacity='0.06' stroke-width='1'/%3E%3C/svg%3E")}
.tex-ring{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Ccircle cx='60' cy='60' r='50' fill='none' stroke='%23f5a524' stroke-opacity='0.10' stroke-width='1.5'/%3E%3Ccircle cx='60' cy='60' r='30' fill='none' stroke='%23f5a524' stroke-opacity='0.10' stroke-width='1.5'/%3E%3C/svg%3E")}

/* gradient scene fills for media */
.scene-a{background:
  radial-gradient(120% 120% at 80% 10%,rgba(245,165,36,.28),transparent 50%),
  linear-gradient(150deg,#16364a,#0b1825)}
.scene-b{background:
  radial-gradient(120% 120% at 20% 0%,rgba(39,80,107,.7),transparent 55%),
  linear-gradient(160deg,#0e2233,#0a141f)}
.scene-c{background:
  radial-gradient(100% 100% at 90% 90%,rgba(245,165,36,.22),transparent 55%),
  linear-gradient(150deg,#1d3b50,#0c1622)}
.scene-d{background:
  linear-gradient(160deg,#27506b,#10202f)}
.scene-e{background:
  radial-gradient(90% 90% at 50% 0%,rgba(245,165,36,.25),transparent 60%),
  linear-gradient(180deg,#0e1b29,#0a121c)}
.scene-f{background:
  linear-gradient(135deg,#163a4e,#0b1825)}

/* inline decorative SVG helpers */
.deco{position:absolute;inset:0;width:100%;height:100%;z-index:1;pointer-events:none}
.deco svg{width:100%;height:100%;display:block}
/* photos use .deco too → keep aspect ratio, never stretch on resize */
img.deco{object-fit:cover;object-position:center}