/* ============================================================
   YUN — Phone & Earphone Lanyard Manufacturer
   Design system modelled on yjoyjoy.com
   Palette: deep navy + gold
   Typeface: Inter throughout (see --serif / --sans in :root)
   ============================================================ */

:root{
  --blue:#1E4D7B;
  --blue-2:#2A6BA8;
  --blue-3:#3A85C4;
  --blue-4:#5FA3D8;
  --blue-bg:#F5F9FC;
  --blue-bg-2:#EBF2F9;
  --blue-bg-3:#DFE9F4;
  --blue-pale:#F0F6FA;
  --blue-ink:#12314F;
  --gold:#C4953A;
  --gold-soft:#DAB863;
  --gold-deep:#8A6220;
  --text-dark:#16232E;
  --text-body:#1E2D3A;
  --text-muted:#5A6B7C;
  --text-light:#778899;
  --white:#FFFFFF;
  --line:#D8E2EC;
  --line-2:#E8EFF5;
  --radius:2px;
  --radius-lg:4px;
  --radius-xl:8px;
  /* Unified typeface: Inter for everything.
     Both tokens resolve to the same stack so existing var(--serif)
     references stay valid — hierarchy now comes from size/weight, not font. */
  --serif:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --container:1240px;
  --ease:cubic-bezier(.4,0,.2,1);
  --shadow-sm:0 2px 8px rgba(30,77,123,.06);
  --shadow-md:0 8px 32px rgba(30,77,123,.10);
  --shadow-lg:0 20px 60px rgba(30,77,123,.14);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  color:var(--text-body);
  background:var(--white);
  line-height:1.75;
  font-size:16px;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit}

.container{max-width:var(--container);margin:0 auto;padding:0 40px}

/* ---------- Typography ---------- */
/* Sans-serif needs slightly looser leading and tighter tracking at display sizes */
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.24;letter-spacing:-.012em;color:var(--text-dark)}
.h-display{font-size:clamp(40px,5.6vw,72px);font-weight:600;line-height:1.12;letter-spacing:-.028em}
.h-section{font-size:clamp(30px,3.6vw,46px);font-weight:600;letter-spacing:-.022em;line-height:1.24}
.lead{font-size:18px;color:var(--text-muted);line-height:1.9;font-weight:300}
.lead-light{color:rgba(255,255,255,.82)}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold-deep);font-weight:600;margin-bottom:22px;
}
.eyebrow::before{content:"";width:30px;height:1px;background:var(--gold)}
.eyebrow.center::before{display:none}
.eyebrow.light{color:var(--gold-soft)}
.eyebrow.light::before{background:var(--gold-soft)}
.text-gold{color:var(--gold-deep)}
.text-blue{color:var(--blue)}

/* ---------- Section rhythm ---------- */
.section{padding:118px 0}
.section-sm{padding:80px 0}
.section-ivory{background:var(--blue-pale)}
.section-ink{background:var(--blue-bg)}
.section-navy{background:var(--blue);color:#fff}
.section-navy h1,.section-navy h2,.section-navy h3,.section-navy h4{color:#fff}
.section-head{max-width:760px;margin-bottom:64px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head.center .eyebrow{justify-content:center}
.section-head h2{margin-bottom:20px}
.section-head p{font-size:17px;color:var(--text-muted);font-weight:300}
.section-navy .section-head p{color:rgba(255,255,255,.78)}
.divider-gold{width:64px;height:2px;background:var(--gold);margin:24px 0}
.divider-gold.center{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 36px;font-size:13px;letter-spacing:.14em;font-weight:600;
  cursor:pointer;border:none;transition:all .3s var(--ease);white-space:nowrap;
  font-family:var(--sans);text-transform:uppercase;border-radius:var(--radius);
  position:relative;overflow:hidden;
}
.btn svg{width:16px;height:16px;flex-shrink:0}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:var(--gold-deep)}
.btn-blue{background:var(--blue);color:#fff}
.btn-blue:hover{background:var(--blue-2)}
.btn-outline{background:transparent;color:var(--blue);border:1px solid var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-outline-light:hover{background:#fff;color:var(--blue);border-color:#fff}
.btn-header{padding:13px 26px;font-size:12px}
.btn-gold::after{
  content:"";position:absolute;top:0;left:-110%;width:100%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
  transition:left .6s var(--ease);
}
.btn-gold:hover::after{left:110%}

.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:600;font-size:14px;letter-spacing:.06em}
.link-arrow svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.link-arrow:hover svg{transform:translateX(5px)}

/* ---------- Topbar ---------- */
.topbar{background:var(--blue-ink);color:rgba(255,255,255,.78);font-size:12.5px;letter-spacing:.05em}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:40px}
.topbar a:hover{color:var(--gold-soft)}
.topbar-left{display:flex;gap:26px;align-items:center}
.topbar-left span{display:flex;align-items:center;gap:7px;white-space:nowrap}
.topbar-left svg{width:14px;height:14px;opacity:.75;flex-shrink:0}
.topbar-right{display:flex;align-items:center;gap:18px;margin-left:auto}
.topbar-inquiry{color:rgba(255,255,255,.92);font-weight:500;white-space:nowrap}
.topbar-inquiry:hover{color:var(--gold-soft)}
.lang-toggle{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);color:#fff;padding:5px 11px;border-radius:var(--radius);font-size:12px;display:flex;align-items:center;gap:6px;cursor:pointer}

/* ---------- Language switcher (i18n sub-directory pages) ---------- */
.lang-switch{position:relative;display:inline-flex;align-items:center}
.lang-select{
  appearance:none;-webkit-appearance:none;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);color:#fff;
  padding:5px 26px 5px 11px;border-radius:var(--radius);font-size:12px;line-height:1.4;
  font-family:inherit;cursor:pointer;max-width:190px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath fill='%23fff' d='M6 8.5 2 4h8z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 8px center;background-size:10px;
}
.lang-select:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.lang-select option{color:#1a1a1a;background:#fff}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-2);
  transition:background .3s var(--ease),box-shadow .3s var(--ease);
}
.header.scrolled{background:rgba(255,255,255,.99);box-shadow:0 2px 26px rgba(30,77,123,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:82px}
.logo{display:flex;align-items:center;gap:13px}
.logo-mark{
  width:46px;height:46px;border:1.5px solid var(--gold);border-radius:50%;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.logo-mark svg{width:26px;height:26px}
.logo-text{font-family:var(--serif);font-size:23px;font-weight:600;letter-spacing:.1em;color:var(--text-dark);line-height:1}
.logo-text small{display:block;font-family:var(--sans);font-size:9px;letter-spacing:.26em;color:var(--gold-deep);font-weight:600;margin-top:4px}
.nav{display:flex;align-items:center;gap:2px}
.nav>a,.nav-drop>a{
  padding:11px 17px;font-size:14px;letter-spacing:.05em;color:var(--text-muted);
  font-weight:500;position:relative;transition:color .2s var(--ease);display:flex;align-items:center;gap:5px;cursor:pointer;
}
.nav>a::after,.nav-drop>a::after{
  content:"";position:absolute;left:50%;bottom:3px;width:0;height:1.5px;
  background:var(--gold);transition:all .3s var(--ease);transform:translateX(-50%);
}
.nav>a:hover,.nav>a.active,.nav-drop:hover>a{color:var(--blue)}
.nav>a:hover::after,.nav>a.active::after{width:22px}
.nav-drop{position:relative}
.nav-drop>a::after{content:"▾";position:static;width:auto;height:auto;background:none;font-size:9px;transform:none;transition:transform .2s;color:var(--text-light)}
.nav-drop:hover>a::after{transform:rotate(180deg)}
.nav-drop-menu{
  position:absolute;top:100%;left:-12px;min-width:290px;background:#fff;
  border:1px solid var(--line-2);box-shadow:var(--shadow-md);padding:10px 0;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .25s var(--ease);z-index:200;border-radius:var(--radius-xl);
}
.nav-drop:hover .nav-drop-menu{opacity:1;visibility:visible;transform:translateY(0)}
.nav-drop-menu a{display:flex;align-items:center;gap:11px;padding:11px 22px;font-size:13.5px;color:var(--text-muted);transition:background .15s,color .15s}
.nav-drop-menu a:hover{background:var(--blue-pale);color:var(--blue)}
.nav-drop-menu a .num{font-family:var(--serif);font-size:12px;color:var(--gold);font-weight:600;letter-spacing:.08em}
.header-cta{display:flex;align-items:center;gap:14px}
.menu-btn{display:none;background:none;border:1px solid var(--line);padding:9px 11px;cursor:pointer;color:var(--text-dark);border-radius:var(--radius)}
.menu-btn svg{width:20px;height:20px;display:block}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--blue-ink);overflow:hidden;color:#fff}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(circle at 78% 18%,rgba(58,133,196,.42),transparent 48%),
    radial-gradient(circle at 12% 88%,rgba(196,149,58,.18),transparent 46%),
    linear-gradient(135deg,#12314F 0%,#1A4370 46%,#0F2942 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;padding:96px 0 88px;align-items:center}
.hero h1{color:#fff;margin-bottom:26px}
.hero h1 em{font-style:normal;color:var(--gold-soft)}
.hero p{font-size:18px;color:rgba(255,255,255,.82);max-width:600px;line-height:1.85;font-weight:300;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px}
.hero-trust span{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid rgba(255,255,255,.24);padding:6px 14px;border-radius:100px;
  color:rgba(255,255,255,.8);background:rgba(255,255,255,.04);
}
.hero-panel{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(10px);padding:38px 34px;border-radius:var(--radius-lg);
}
.hero-panel-title{font-family:var(--sans);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-soft);font-weight:600;margin-bottom:26px}
.hero-stat{display:flex;align-items:baseline;gap:14px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.hero-stat:last-child{border-bottom:none}
.hero-stat .num{font-family:var(--serif);font-size:32px;font-weight:600;color:#fff;min-width:82px;letter-spacing:.01em}
.hero-stat .lbl{font-size:13px;color:rgba(255,255,255,.7);line-height:1.5}

/* ---------- Trust strip ---------- */
.trust-strip{background:var(--blue-bg-2);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{padding:34px 30px;border-right:1px solid var(--line);text-align:center}
.trust-item:last-child{border-right:none}
.trust-item .num{font-family:var(--serif);font-size:30px;font-weight:600;color:var(--blue);line-height:1.1}
.trust-item .lbl{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin-top:6px}

/* ---------- About intro ---------- */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-intro h2{margin-bottom:22px}
.about-intro p{color:var(--text-muted);font-weight:300;margin-bottom:18px;line-height:1.9}
.about-sign{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.about-sign .name{font-family:var(--serif);font-size:20px;font-weight:600;color:var(--text-dark)}
.about-sign .role{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold-deep);margin-top:4px}
.about-visual{position:relative;aspect-ratio:1/1.05;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(150deg,var(--blue-bg-3),var(--blue-bg))}
.about-visual img{width:100%;height:100%;object-fit:cover}
.about-visual::after{content:"";position:absolute;inset:14px;border:1px solid rgba(196,149,58,.28);border-radius:var(--radius);pointer-events:none}

/* ---------- Category rows ---------- */
.cat-row{display:grid;grid-template-columns:.95fr 1.05fr;gap:64px;padding:62px 0;border-bottom:1px solid var(--line);align-items:center}
.cat-row:last-child{border-bottom:none}
.cat-row:nth-child(even){grid-template-columns:1.05fr .95fr}
.cat-row:nth-child(even) .cat-row-img{order:2}
.cat-row-img{
  aspect-ratio:5/4;background:linear-gradient(135deg,var(--blue-bg-3),var(--blue-bg));
  position:relative;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius);overflow:hidden;
}
.cat-row-img img{width:100%;height:100%;object-fit:cover}
.cat-row-img svg{width:38%;height:38%;opacity:.5;color:var(--gold-soft)}
.cat-row-img::after{content:"";position:absolute;inset:12px;border:1px solid rgba(196,149,58,.22);border-radius:var(--radius);pointer-events:none}
.cat-num{font-family:var(--serif);font-size:14px;color:var(--gold-deep);letter-spacing:.2em;margin-bottom:14px;font-weight:600}
.cat-row h2,.cat-row h3{font-size:30px;font-weight:600;margin-bottom:15px}
.cat-desc{color:var(--text-muted);font-weight:300;font-size:16px;margin-bottom:24px;line-height:1.9}
.cat-specs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.cat-spec{border:1px solid var(--line);padding:8px 15px;font-size:12.5px;color:var(--text-muted);letter-spacing:.03em;border-radius:var(--radius);background:#fff}
.cat-spec strong{color:var(--text-dark);font-weight:600}

/* ---------- Product cards ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--blue-4)}
.prod-media{aspect-ratio:4/3;background:linear-gradient(135deg,#F7FAFD 0%,var(--blue-bg-2) 55%,var(--blue-bg-3) 100%);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.prod-media img{width:100%;height:100%;object-fit:cover}
.prod-media svg{width:44%;height:44%;color:var(--gold);opacity:.42}
.prod-badge{position:absolute;top:14px;left:14px;background:rgba(18,49,79,.9);color:#fff;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;padding:5px 11px;border-radius:100px;font-weight:600}
.prod-body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.prod-sku{font-family:var(--serif);font-size:12.5px;letter-spacing:.16em;color:var(--gold-deep);font-weight:600;margin-bottom:8px}
.prod-body h3{font-family:var(--sans);font-size:17px;font-weight:600;margin-bottom:10px;line-height:1.4}
.prod-body p{font-size:13.5px;color:var(--text-muted);font-weight:300;line-height:1.7;margin-bottom:18px;flex:1}
.prod-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.prod-meta span{font-size:11.5px;color:var(--text-light);border:1px solid var(--line-2);padding:4px 10px;border-radius:100px}
.prod-meta span strong{color:var(--text-body);font-weight:600}

/* ---------- Advantages ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:44px 40px}
.adv-item{padding-top:26px;border-top:2px solid var(--line);transition:transform .3s var(--ease)}
.adv-item:hover{transform:translateY(-4px)}
.adv-num{font-family:var(--serif);font-size:15px;font-weight:600;color:var(--gold);letter-spacing:.14em;margin-bottom:14px;display:block}
.adv-item h3{font-family:var(--sans);font-size:19px;font-weight:600;margin-bottom:12px;line-height:1.35}
.adv-item p{font-size:14.5px;color:var(--text-muted);font-weight:300;line-height:1.8}
.adv-item ul{margin-top:12px}
.adv-item ul li{font-size:13.5px;color:var(--text-muted);padding-left:18px;position:relative;margin-bottom:6px;font-weight:300}
.adv-item ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border:1px solid var(--gold);border-radius:50%}

/* ---------- Process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.process-item{padding:38px 34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff;transition:background .3s var(--ease)}
.process-item:hover{background:var(--blue-pale)}
.process-step{font-family:var(--serif);font-size:15px;font-weight:600;color:var(--gold-deep);letter-spacing:.16em;margin-bottom:16px;display:block}
.process-item h3{font-family:var(--sans);font-size:17px;font-weight:600;margin-bottom:11px}
.process-item p{font-size:13.8px;color:var(--text-muted);font-weight:300;line-height:1.8}

/* ---------- Why choose ---------- */
.why-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line)}
.why-item{display:flex;gap:22px;padding:34px 34px 34px 0;border-bottom:1px solid var(--line);transition:transform .3s var(--ease)}
.why-item:nth-child(odd){border-right:1px solid var(--line);padding-right:34px}
.why-item:nth-child(even){padding-left:34px}
.why-item:hover{transform:translateX(4px)}
.why-icon{width:46px;height:46px;flex-shrink:0;border:1px solid var(--gold);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--gold-deep);transition:transform .3s var(--ease)}
.why-icon svg{width:21px;height:21px}
.why-item:hover .why-icon{transform:scale(1.1) rotate(6deg)}
.why-text h4{font-family:var(--sans);font-size:16.5px;font-weight:600;margin-bottom:8px}
.why-text p{font-size:14px;color:var(--text-muted);font-weight:300;line-height:1.8}

/* ---------- Spec table ---------- */
.spec-table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:#fff;border-radius:var(--radius-lg);overflow:hidden}
.spec-table th,.spec-table td{padding:15px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-2)}
.spec-table th{background:var(--blue-bg-2);font-family:var(--sans);font-weight:600;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--text-dark)}
.spec-table tr:last-child td{border-bottom:none}
.spec-table td:first-child{font-weight:600;color:var(--text-dark);width:38%}
.spec-table td{color:var(--text-muted);font-weight:300}
.spec-table tr:hover td{background:var(--blue-pale)}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:none;text-align:left;cursor:pointer;
  padding:26px 46px 26px 0;font-family:var(--sans);font-size:16.5px;font-weight:600;
  color:var(--text-dark);position:relative;line-height:1.5;transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--blue)}
.faq-q::after{
  content:"";position:absolute;right:6px;top:50%;width:13px;height:13px;
  border-right:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease);
}
.faq-item.open .faq-q::after{transform:translateY(-30%) rotate(-135deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a-inner{padding:0 60px 26px 0;font-size:14.5px;color:var(--text-muted);font-weight:300;line-height:1.9}
.faq-item.open .faq-a{max-height:420px}

/* ---------- Timeline ---------- */
.timeline{position:relative;padding-left:46px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;background:var(--line)}
.timeline-item{position:relative;padding-bottom:44px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{content:"";position:absolute;left:-44px;top:5px;width:15px;height:15px;border:1.5px solid var(--gold);background:#fff;border-radius:50%}
.timeline-year{font-family:var(--serif);font-size:21px;color:var(--gold-deep);font-weight:600;margin-bottom:6px}
.timeline-item h4{font-family:var(--sans);font-size:18px;font-weight:600;margin-bottom:9px}
.timeline-item p{color:var(--text-muted);font-weight:300;font-size:14.5px;line-height:1.85}

/* ---------- Gallery ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-item{aspect-ratio:4/3;overflow:hidden;border-radius:var(--radius-lg);position:relative;background:var(--blue-bg-2);display:flex;align-items:center;justify-content:center}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item svg{width:30%;height:30%;color:var(--gold-soft);opacity:.5}
.gallery-cap{position:absolute;bottom:0;left:0;right:0;padding:16px 18px;background:linear-gradient(transparent,rgba(18,49,79,.88));color:#fff;font-size:12.5px;letter-spacing:.06em}

/* ---------- CTA band ---------- */
.cta-band{background:var(--blue-ink);position:relative;overflow:hidden;padding:92px 0;text-align:center;color:#fff}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(58,133,196,.42),transparent 60%)}
.cta-band-inner{position:relative;z-index:2;max-width:760px;margin:0 auto}
.cta-band h2{color:#fff;margin-bottom:20px}
.cta-band p{color:rgba(255,255,255,.8);font-size:17px;font-weight:300;margin-bottom:34px}
.cta-band .hero-actions{justify-content:center;margin-bottom:0}

/* ---------- Page hero ---------- */
.page-hero{position:relative;background:var(--blue-ink);color:#fff;padding:78px 0 66px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 20%,rgba(58,133,196,.4),transparent 55%)}
.page-hero-inner{position:relative;z-index:2;max-width:780px}
.page-hero h1{color:#fff;font-size:clamp(32px,4.6vw,54px);margin-bottom:20px}
.page-hero p{color:rgba(255,255,255,.82);font-size:17px;font-weight:300;line-height:1.85;max-width:680px}
.breadcrumb{position:relative;z-index:2;font-size:12.5px;letter-spacing:.08em;color:rgba(255,255,255,.6);margin-bottom:22px;text-transform:uppercase}
.breadcrumb a:hover{color:var(--gold-soft)}
.breadcrumb span{margin:0 8px;opacity:.5}
.page-hero .cat-specs{margin-top:30px}
.page-hero .cat-spec{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.24);color:rgba(255,255,255,.86)}
.page-hero .cat-spec strong{color:var(--gold-soft)}

/* ---------- Contact ---------- */
.contact-band-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.contact-info{background:var(--blue-ink);color:#fff;padding:56px 46px}
.contact-info h3{color:#fff;font-size:26px;margin-bottom:14px}
.contact-info>p{color:rgba(255,255,255,.72);font-size:14.5px;font-weight:300;margin-bottom:34px;line-height:1.85}
.contact-detail{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12);align-items:flex-start}
.contact-detail:last-of-type{border-bottom:none}
.contact-detail .ico{width:40px;height:40px;flex-shrink:0;border:1px solid rgba(255,255,255,.28);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--gold-soft);transition:transform .3s var(--ease)}
.contact-detail .ico svg{width:18px;height:18px}
.contact-detail:hover .ico{transform:scale(1.1) rotate(6deg)}
.contact-detail .lbl{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:4px}
.contact-detail .val{font-size:15px;color:#fff;font-weight:500;word-break:break-word}
.contact-detail .val a:hover{color:var(--gold-soft)}
.form-lux{padding:52px 48px}
.form-lux h3{font-size:26px;margin-bottom:8px}
.form-lux .form-sub{color:var(--text-muted);font-size:14.5px;font-weight:300;margin-bottom:34px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:22px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:11.5px;letter-spacing:.11em;color:var(--text-muted);font-weight:600;text-transform:uppercase}
.form-field label .req{color:var(--gold-deep)}
.form-field input,.form-field select,.form-field textarea{
  padding:14px 16px;border:1px solid var(--line);background:var(--white);
  font-family:var(--sans);font-size:15px;color:var(--text-dark);
  transition:all .2s var(--ease);border-radius:var(--radius);
}
.form-field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235A6B7C' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:42px}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(196,149,58,.14);
}
.form-field textarea{resize:vertical;min-height:118px;font-family:var(--sans)}
.form-divider{height:1px;background:var(--line-2);margin:30px 0;position:relative}
.form-divider span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:#fff;padding:0 18px;font-size:11px;letter-spacing:.2em;color:var(--gold-deep);text-transform:uppercase;font-weight:600}
.form-success{display:none;background:var(--blue-pale);border:1px solid var(--gold);padding:26px 30px;margin-bottom:24px;align-items:flex-start;gap:16px;border-radius:var(--radius-lg)}
.form-success.show{display:flex}
.form-success .ico{flex-shrink:0;width:40px;height:40px;border:1px solid var(--gold);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--gold-deep)}
.form-success h4{font-family:var(--sans);font-size:18px;font-weight:600;margin-bottom:5px}
.form-success p{font-size:13.5px;color:var(--text-muted);font-weight:300}
.form-note{font-size:12.5px;color:var(--text-light);font-weight:300;margin-top:18px;line-height:1.7}

/* ---------- Logos / clients ---------- */
.logo-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.logo-chip{border:1px solid var(--line);background:#fff;padding:14px 26px;border-radius:100px;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);font-weight:600}

/* ---------- Footer ---------- */
.footer{background:var(--blue-ink);color:rgba(255,255,255,.72);padding:76px 0 26px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer .logo-text{color:#fff}
.footer .logo-text small{color:var(--gold-soft)}
.footer .logo-mark{border-color:var(--gold-soft)}
.footer-about{margin-top:22px;font-size:13.8px;font-weight:300;line-height:1.85;max-width:330px;color:rgba(255,255,255,.62)}
.footer-social{display:flex;gap:10px;margin-top:24px}
.footer-social a{width:38px;height:38px;border:1px solid rgba(255,255,255,.2);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .25s var(--ease)}
.footer-social a svg{width:17px;height:17px}
.footer-social a:hover{background:var(--gold);border-color:var(--gold);color:#fff}
.footer-col h5{font-family:var(--sans);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#fff;font-weight:600;margin-bottom:20px}
.footer-col a{display:block;padding:6px 0;font-size:13.8px;color:rgba(255,255,255,.66);font-weight:300;position:relative;transition:color .2s}
.footer-col a:hover{color:var(--gold-soft)}
.footer-col p{font-size:13.5px;font-weight:300;line-height:1.8;margin-bottom:12px;color:rgba(255,255,255,.66)}
.footer-newsletter{display:flex;margin-top:6px}
.footer-newsletter input{flex:1;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-right:none;color:#fff;padding:12px 14px;font-size:13.5px;font-family:var(--sans);border-radius:var(--radius) 0 0 var(--radius)}
.footer-newsletter input::placeholder{color:rgba(255,255,255,.45)}
.footer-newsletter input:focus{outline:none;border-color:var(--gold-soft)}
.footer-newsletter button{background:var(--gold);color:#fff;border:none;padding:12px 18px;cursor:pointer;border-radius:0 var(--radius) var(--radius) 0;font-size:13px;font-weight:600;transition:background .25s}
.footer-newsletter button:hover{background:var(--gold-deep)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:26px;font-size:12.5px;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:12px}
.footer-bottom a:hover{color:var(--gold-soft)}
.footer-bottom-links{display:flex;gap:22px;flex-wrap:wrap}

/* ---------- Floating contact ---------- */
.float-contact{position:fixed;right:24px;top:50%;transform:translateY(-50%);z-index:90;display:flex;flex-direction:column;gap:12px}
.fc-btn{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;border:none;box-shadow:0 6px 20px rgba(30,77,123,.25);transition:all .3s var(--ease);position:relative}
.fc-btn svg{width:25px;height:25px}
.fc-btn:hover{transform:scale(1.1) translateX(-4px);box-shadow:0 10px 28px rgba(30,77,123,.35)}
.fc-wa{background:#25D366}
.fc-mail{background:var(--blue)}
.fc-top{background:var(--blue-2)}
.fc-btn .fc-tip{position:absolute;right:66px;top:50%;transform:translateY(-50%) translateX(8px);background:var(--blue-ink);color:#fff;font-size:12.5px;padding:7px 14px;white-space:nowrap;border-radius:var(--radius);opacity:0;pointer-events:none;transition:all .25s var(--ease);letter-spacing:.05em}
.fc-btn:hover .fc-tip{opacity:1;transform:translateY(-50%) translateX(0)}

/* ---------- Animations ---------- */
/* Progressive enhancement: hidden state only applies when JS is available,
   so content stays fully visible for no-JS browsers and crawlers. */
.fade-in-up{opacity:1;transform:none}
.js .fade-in-up{opacity:0;transform:translateY(38px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .fade-in-up.visible{opacity:1;transform:translateY(0)}
.fade-in-left{opacity:1;transform:none}
.js .fade-in-left{opacity:0;transform:translateX(-38px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .fade-in-left.visible{opacity:1;transform:translateX(0)}
.fade-in-right{opacity:1;transform:none}
.js .fade-in-right{opacity:0;transform:translateX(38px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .fade-in-right.visible{opacity:1;transform:translateX(0)}
.adv-item.fade-in-up:nth-child(1){transition-delay:.05s}
.adv-item.fade-in-up:nth-child(2){transition-delay:.1s}
.adv-item.fade-in-up:nth-child(3){transition-delay:.15s}
.adv-item.fade-in-up:nth-child(4){transition-delay:.2s}
.adv-item.fade-in-up:nth-child(5){transition-delay:.25s}
.adv-item.fade-in-up:nth-child(6){transition-delay:.3s}
.prod-card.fade-in-up:nth-child(2){transition-delay:.08s}
.prod-card.fade-in-up:nth-child(3){transition-delay:.16s}
.prod-card.fade-in-up:nth-child(4){transition-delay:.08s}
.prod-card.fade-in-up:nth-child(5){transition-delay:.16s}
.prod-card.fade-in-up:nth-child(6){transition-delay:.24s}

::selection{background:rgba(196,149,58,.22);color:var(--text-dark)}
*:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--blue-bg)}
::-webkit-scrollbar-thumb{background:var(--blue-3);border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:var(--blue-2)}

/* ---------- Responsive ---------- */
@media(max-width:1100px){
  .nav>a,.nav-drop>a{padding:11px 12px;font-size:13.5px}
  .hero-inner{gap:48px}
}
@media(max-width:1024px){
  .container{padding:0 28px}
  .hero-inner{grid-template-columns:1fr;gap:48px;padding:72px 0 64px}
  .about-intro{grid-template-columns:1fr;gap:48px}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .adv-grid{grid-template-columns:1fr 1fr;gap:40px}
  .process-grid{grid-template-columns:1fr 1fr}
  .why-list{grid-template-columns:1fr}
  .why-item:nth-child(odd){border-right:none;padding-right:0}
  .why-item:nth-child(even){padding-left:0}
  .contact-band-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr;gap:40px}
  .cat-row,.cat-row:nth-child(even){grid-template-columns:1fr;gap:32px}
  .cat-row:nth-child(even) .cat-row-img{order:0}
  .section{padding:88px 0}
  .gallery-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav{display:none}
  .header-cta .btn{display:none}
  .menu-btn{display:flex}
  .nav.open{
    display:flex;position:absolute;top:82px;left:0;right:0;flex-direction:column;
    background:#fff;border-bottom:1px solid var(--line);padding:14px 20px 20px;
    gap:0;box-shadow:0 16px 30px rgba(30,77,123,.1);max-height:calc(100vh - 82px);overflow-y:auto;
  }
  .nav.open>a,.nav.open .nav-drop>a{padding:14px 0;border-bottom:1px solid var(--line-2);font-size:16px;width:100%}
  .nav.open .nav-drop{flex-direction:column;align-items:stretch;width:100%}
  .nav.open .nav-drop>a{pointer-events:none}
  .nav.open .nav-drop>a::after{display:none}
  .nav.open .nav-drop-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;background:transparent;padding:2px 0 10px 16px;min-width:0}
  .nav.open .nav-drop-menu a{padding:10px 0;font-size:14.5px}
  .trust-grid{grid-template-columns:1fr 1fr}
  .trust-item:nth-child(2){border-right:none}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--line)}
}
@media(max-width:900px){
  .topbar-left{gap:16px}
  .topbar-left span:nth-child(n+3){display:none}
}
@media(max-width:560px){
  .topbar-inquiry{display:none}
  .topbar-right{gap:10px}
}
@media(max-width:640px){
  .container{padding:0 20px}
  .topbar-left span:nth-child(n+2){display:none}
  .topbar-inquiry{font-size:12px}
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .prod-grid,.adv-grid,.process-grid,.form-row,.gallery-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .form-lux,.contact-info{padding:34px 24px}
  .float-contact{right:14px;top:auto;bottom:22px;transform:none}
  .fc-btn{width:48px;height:48px}
  .fc-btn .fc-tip{display:none}
  .btn{padding:15px 28px;font-size:12.5px}
  .page-hero{padding:56px 0 48px}
  .cat-row{padding:44px 0}
  .cat-row h2,.cat-row h3{font-size:25px}
  .spec-table th,.spec-table td{padding:12px 14px;font-size:13px}
  .spec-table td:first-child{width:44%}
}
@media(max-width:480px){
  .h-display{font-size:clamp(30px,8.5vw,40px)}
  .h-section{font-size:clamp(24px,7vw,32px)}
  .hero-stat .num{font-size:26px;min-width:70px}
}
/* 小屏关闭左右位移：未揭示元素带 translateX 会把 390px 视口撑到 408px */
@media(max-width:768px){
  .js .fade-in-left,.js .fade-in-right{transform:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .fade-in-up,.fade-in-left,.fade-in-right,
  .js .fade-in-up,.js .fade-in-left,.js .fade-in-right{opacity:1!important;transform:none!important}
}

/* ---------- Product card detail link ---------- */
.prod-media a{display:block;width:100%;height:100%}
.prod-link{
  display:flex;align-items:center;gap:8px;width:100%;
  margin-top:auto;padding-top:15px;border-top:1px solid var(--line-2);
  font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);
}
.prod-link svg{width:15px;height:15px;margin-left:auto;transition:transform .25s var(--ease)}
.prod-link:hover svg{transform:translateX(5px)}