/* =========================================================
   XU ANG LIGHTING — v2 (reference: hebeiyitop.com)
   ========================================================= */
:root{
  --blue:#1546c8; --blue-deep:#0d2f86; --navy:#0b1f42; --navy-2:#0f2547;
  --gold:#e3b23c; --ink:#171b22; --text:#333a45; --muted:#6b7280;
  --paper:#ffffff; --gray:#f4f6fb; --line:#e2e7f0; --line-dark:rgba(255,255,255,.14);
  --sans:"Poppins","Inter","Noto Sans","Noto Sans SC","Noto Sans Arabic",system-ui,sans-serif;
  --body:"Inter","Noto Sans","Noto Sans SC","Noto Sans Arabic",system-ui,sans-serif;
  --wrap:1280px; --pad:clamp(18px,4vw,44px);
  --ease:cubic-bezier(.22,.61,.36,1); --shadow:0 18px 44px -28px rgba(11,31,66,.45);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--body);color:var(--text);background:var(--paper);line-height:1.7;font-size:15.5px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{width:18px;height:18px;flex:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}
.section{padding:clamp(56px,7vw,96px) 0}
.section--alt{background:var(--gray)}
.section__head{max-width:820px;margin:0 auto clamp(30px,4vw,52px);text-align:center}
.section__head p{color:var(--muted);font-size:15.5px;margin-top:12px}
.sec-title{font-family:var(--sans);font-weight:700;font-size:clamp(26px,3.2vw,40px);line-height:1.18;letter-spacing:-.01em;color:var(--ink);position:relative;display:inline-block;padding-bottom:16px}
.sec-title::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:54px;height:3px;background:var(--blue)}
.sec-title--left::after{left:0;transform:none}
.sec-title--light{color:#fff}
.sec-title--light::after{background:var(--gold)}
.eyebrow{display:inline-block;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--blue);font-weight:600;margin-bottom:10px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:999px;font-family:var(--sans);font-weight:600;font-size:13.5px;letter-spacing:.02em;transition:transform .3s var(--ease),background .3s,color .3s,box-shadow .3s;white-space:nowrap}
.btn svg{width:16px;height:16px;transition:transform .3s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn--primary{background:var(--blue);color:#fff;box-shadow:0 14px 28px -18px rgba(21,70,200,.9)}
.btn--primary:hover{background:var(--blue-deep);transform:translateY(-2px)}
.btn--ghost{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn--ghost:hover{background:#fff;color:var(--navy);border-color:#fff}
.btn--outline{border:1px solid var(--blue);color:var(--blue)}
.btn--outline:hover{background:var(--blue);color:#fff}
.btn--white{background:#fff;color:var(--blue)}
.btn--white:hover{transform:translateY(-2px)}
.btn--dark{background:var(--navy);color:#fff}
.btn--sm{padding:10px 20px;font-size:12.5px}
.btn--wa{background:#25d366;border-color:#25d366;color:#fff!important}
.center{text-align:center;margin-top:36px}

/* ---------- topbar ---------- */
.topbar{background:var(--blue);color:#eaf0ff;font-size:12.5px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:42px}
.topbar__contact{display:flex;gap:22px;align-items:center}
.topbar__contact a{display:inline-flex;align-items:center;gap:7px;opacity:.92}
.topbar__contact svg{width:14px;height:14px}
.topbar__contact a:hover{opacity:1}
.topbar__right{display:flex;align-items:center;gap:18px}
.topbar__quote{font-weight:600;letter-spacing:.04em;border-bottom:1px solid rgba(255,255,255,.45);padding-bottom:1px}
.lang{position:relative}
.lang__btn{display:inline-flex;align-items:center;gap:7px;color:#eaf0ff;font-size:12.5px}
.lang__btn svg:first-child{width:15px;height:15px}
.lang__btn svg:last-child{width:12px;height:12px;transition:transform .3s}
.lang.is-open .lang__btn svg:last-child{transform:rotate(180deg)}
.lang__menu{position:absolute;top:calc(100% + 10px);inset-inline-end:0;min-width:150px;background:#fff;color:var(--ink);border-radius:8px;box-shadow:0 18px 40px -18px rgba(11,31,66,.5);padding:6px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.25s var(--ease);z-index:60}
.lang.is-open .lang__menu{opacity:1;visibility:visible;transform:none}
.lang__menu a{display:block;padding:8px 12px;border-radius:6px;font-size:13px}
.lang__menu a:hover{background:var(--gray)}
.lang__menu a.is-on{color:var(--blue);font-weight:600}

/* ---------- header ---------- */
.header{position:sticky;top:0;z-index:50;background:#fff;transition:box-shadow .3s,background .3s;border-bottom:1px solid var(--line)}
.header.is-stuck{box-shadow:0 12px 30px -22px rgba(11,31,66,.55)}
.header__inner{display:flex;align-items:center;gap:26px;height:84px}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand__mark{width:46px;height:46px;border-radius:50%;background:var(--navy);color:var(--gold);display:grid;place-items:center;font-family:var(--sans);font-weight:700;font-size:15px;letter-spacing:.06em;border:2px solid var(--gold)}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text b{font-family:var(--sans);font-size:17px;letter-spacing:.08em;color:var(--ink)}
.brand__text i{font-style:normal;font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.brand--light .brand__text b{color:#fff}
.brand--light .brand__text i{color:rgba(255,255,255,.6)}
.nav{display:flex;gap:6px;margin-inline-start:auto}
.nav__item{position:relative}
.nav__item > a{display:inline-flex;align-items:center;gap:5px;padding:10px 14px;font-family:var(--sans);font-weight:600;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink);transition:color .25s}
.nav__item > a svg{width:12px;height:12px;transition:transform .3s}
.nav__item:hover > a,.nav__item > a.is-active{color:var(--blue)}
.nav__item.has-sub:hover > a svg{transform:rotate(180deg)}
.nav__sub{position:absolute;top:100%;inset-inline-start:0;min-width:230px;background:#fff;box-shadow:0 24px 50px -24px rgba(11,31,66,.5);border-radius:10px;padding:10px;opacity:0;visibility:hidden;transform:translateY(10px);transition:.28s var(--ease);z-index:55}
.nav__item:hover .nav__sub{opacity:1;visibility:visible;transform:none}
.nav__sub a{display:block;padding:9px 12px;font-size:13.5px;border-radius:6px;color:var(--text)}
.nav__sub a:hover{background:var(--gray);color:var(--blue)}
.header__actions{display:flex;align-items:center;gap:12px;flex:none}
.header__quote{background:var(--blue);color:#fff;border-radius:999px;padding:11px 22px}
.header__quote:hover{background:var(--blue-deep)}
.iconbtn{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;transition:background .2s}
.iconbtn:hover{background:var(--gray)}
.burger{display:none;width:42px;height:42px;border-radius:8px;place-items:center;gap:5px}
.burger span{display:block;width:22px;height:2px;background:var(--ink);transition:.3s}
.drawer{position:fixed;inset:0 0 0 auto;width:min(360px,86vw);background:var(--navy);color:#fff;z-index:120;transform:translateX(100%);transition:transform .4s var(--ease);display:flex;flex-direction:column;padding:22px}
.drawer.is-open{transform:none}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer__head .iconbtn{color:#fff}
.drawer__nav{display:flex;flex-direction:column;gap:4px}
.drawer__nav a{padding:13px 6px;font-family:var(--sans);font-weight:600;font-size:15px;border-bottom:1px solid var(--line-dark)}
.drawer__nav a.is-active{color:var(--gold)}
.drawer__cta{margin-top:auto;background:var(--gold);color:var(--navy);justify-content:center}

/* ---------- search ---------- */
.searchbox{position:fixed;inset:0;background:rgba(11,31,66,.72);backdrop-filter:blur(6px);z-index:130;display:none;padding:12vh var(--pad)}
.searchbox.is-open{display:block}
.searchbox__panel{max-width:720px;margin:0 auto;background:#fff;border-radius:14px;padding:18px;box-shadow:0 40px 80px -30px rgba(0,0,0,.5)}
.searchbox__bar{display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line);padding-bottom:12px}
.searchbox__bar input{flex:1;border:0;outline:0;font:inherit;font-size:17px;padding:8px 0;background:transparent}
.searchbox__results{max-height:52vh;overflow:auto;margin-top:8px}
.searchbox__results a{display:block;padding:12px 8px;border-radius:8px;border-bottom:1px solid var(--line)}
.searchbox__results a:hover{background:var(--gray)}
.searchbox__results b{display:block;font-size:14.5px;color:var(--ink)}
.searchbox__results span{font-size:12.5px;color:var(--muted)}
.searchbox__empty{padding:18px 8px;color:var(--muted);font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;min-height:clamp(560px,76vh,800px);display:grid;overflow:hidden;background:var(--navy)}
.hero__slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1s var(--ease),visibility 1s}
.hero__slide.is-on{opacity:1;visibility:visible;z-index:2}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.08);transition:transform 7s linear;will-change:transform}
.hero__slide.is-on .hero__bg{transform:scale(1)}
.hero__slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,20,40,.82) 0%,rgba(8,20,40,.55) 45%,rgba(8,20,40,.15) 100%)}
.hero__content{position:relative;z-index:3;align-self:center;padding-top:40px;padding-bottom:110px;color:#fff;max-width:760px}
.hero__eyebrow{display:inline-block;font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:18px;font-weight:600}
.hero__title{font-family:var(--sans);font-weight:700;font-size:clamp(34px,5vw,62px);line-height:1.08;letter-spacing:-.015em;max-width:15ch}
.hero__sub{margin-top:22px;font-size:clamp(14.5px,1.4vw,17px);color:rgba(255,255,255,.78);max-width:56ch}
.hero__actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.hero__ui{position:absolute;left:0;right:0;bottom:0;z-index:5;padding-bottom:28px}
.hero__ui-inner{display:flex;align-items:center;justify-content:space-between}
.hero__dots{display:flex;gap:10px}
.hero__dot{width:34px;height:3px;background:rgba(255,255,255,.32);border-radius:2px;transition:.3s}
.hero__dot.is-on{background:var(--gold);width:54px}
.hero__nav{display:flex;gap:8px}
.hero__nav button{width:44px;height:44px;border:1px solid rgba(255,255,255,.4);border-radius:50%;display:grid;place-items:center;color:#fff;transition:.25s}
.hero__nav button:hover{background:#fff;color:var(--navy)}
.hero__nav button:first-child svg{transform:rotate(90deg)}
.hero__nav button:last-child svg{transform:rotate(-90deg)}

/* ---------- category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,1.6vw,22px)}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s var(--ease);display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.cat-card__media{aspect-ratio:4/3;overflow:hidden;background:#eef2f9}
.cat-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.cat-card:hover .cat-card__media img{transform:scale(1.07)}
.cat-card__body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.cat-card__body h3{font-family:var(--sans);font-size:16.5px;font-weight:600;color:var(--ink)}
.cat-card__body p{font-size:13px;color:var(--muted);line-height:1.6;flex:1}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);font-weight:600;margin-top:6px}
.link-arrow svg{width:14px;height:14px;transition:transform .3s}
.cat-card:hover .link-arrow svg{transform:translateX(4px)}

/* ---------- products ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,1.8vw,24px)}
.prod-grid--3{grid-template-columns:repeat(3,1fr)}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .35s,transform .35s}
.prod-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.prod-card__media{aspect-ratio:4/3;overflow:hidden;background:#eef2f9;display:block}
.prod-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.prod-card:hover .prod-card__media img{transform:scale(1.06)}
.prod-card__body{padding:18px 20px 0;display:flex;flex-direction:column;flex:1;text-align:center}
.prod-card__code{font-size:10.5px;letter-spacing:.16em;color:var(--blue);font-weight:600}
.prod-card__body h3{font-family:var(--sans);font-size:16px;font-weight:600;margin:6px 0 8px;color:var(--ink)}
.prod-card__body h3 a:hover{color:var(--blue)}
.prod-card__body p{font-size:12.8px;color:var(--muted);line-height:1.6;flex:1}
.prod-card__more{margin-top:14px;padding:12px 0;border-top:1px solid var(--line);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.prod-card__more svg{width:13px;height:13px}

/* ---------- video ---------- */
.video-sec{background:var(--gray)}
.video-cover{position:relative;display:block;width:min(980px,100%);margin:0 auto;border-radius:14px;overflow:hidden;box-shadow:var(--shadow);cursor:pointer;background:#000}
.video-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.92;transition:transform .8s var(--ease),opacity .4s}
.video-cover:hover img{transform:scale(1.03);opacity:1}
.video-cover__play{position:absolute;inset:0;display:grid;place-items:center}
.video-cover__play svg{width:26px;height:26px;color:var(--blue);background:#fff;border-radius:50%;padding:16px;width:62px;height:62px;box-shadow:0 14px 34px -12px rgba(0,0,0,.5);transition:transform .35s}
.video-cover:hover .video-cover__play svg{transform:scale(1.08)}
.video-cover__label{position:absolute;inset-inline-start:24px;bottom:24px;background:var(--blue);color:#fff;font-size:12px;letter-spacing:.12em;text-transform:uppercase;padding:10px 18px;border-radius:999px}
.video-cover--sm{width:100%}

/* ---------- stats ---------- */
.stats-band{position:relative;padding:clamp(60px,7vw,92px) 0;color:#fff;overflow:hidden}
.stats-band__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.05)}
.stats-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,26,60,.94),rgba(9,26,60,.78))}
.stats-band__inner{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:center}
.stat{text-align:center;padding:0 10px}
.stat__num{display:flex;align-items:baseline;justify-content:center;gap:4px;font-family:var(--sans);font-weight:700;font-size:clamp(30px,3.6vw,46px);line-height:1;color:#fff}
.stat__num em{font-style:normal;font-size:.5em;color:var(--gold)}
.stat__label{margin-top:10px;font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.stats-band__cta{grid-column:1/-1;justify-self:center;margin-top:18px}

/* ---------- blog ---------- */
.blog-home{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(30px,5vw,70px);align-items:start}
.blog-home__intro p{color:var(--muted);margin:16px 0 26px;max-width:42ch}
.blog-home__list{display:flex;flex-direction:column}
.news-row{display:grid;grid-template-columns:110px 1fr 30px;gap:20px;align-items:start;padding:22px 0;border-bottom:1px solid var(--line);transition:transform .3s var(--ease)}
.news-row:first-child{border-top:1px solid var(--line)}
.news-row:hover{transform:translateX(6px)}
.news-row__date{font-size:12px;letter-spacing:.06em;color:var(--muted);padding-top:3px}
.news-row__body b{display:block;font-family:var(--sans);font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.4}
.news-row__body em{display:block;font-style:normal;margin-top:7px;font-size:13px;color:var(--muted);line-height:1.6}
.news-row__arrow{align-self:center;color:var(--blue)}
.news-row__arrow svg{width:18px;height:18px;transition:transform .3s}
.news-row:hover .news-row__arrow svg{transform:translateX(5px)}

/* ---------- why ---------- */
.why{position:relative;padding:clamp(70px,8vw,110px) 0;background-size:cover;background-position:center;background-attachment:fixed;color:#fff}
.why__overlay{position:absolute;inset:0;background:rgba(9,26,60,.86)}
.why__inner{position:relative;z-index:2}
.why .section__head p{color:rgba(255,255,255,.72)}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,26px)}
.why-card{background:linear-gradient(160deg,#1c4fd1,#123a9e);border-radius:12px;padding:34px 30px 30px;text-align:center;position:relative;overflow:hidden;transition:transform .35s var(--ease)}
.why-card:hover{transform:translateY(-6px)}
.why-card__n{font-family:var(--sans);font-weight:800;font-size:40px;color:rgba(255,255,255,.9);display:block}
.why-card h3{font-family:var(--sans);font-size:19px;font-weight:600;margin:14px 0 12px}
.why-card p{font-size:13.5px;color:rgba(255,255,255,.78);line-height:1.7}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,70px);align-items:start}
.factory-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:26px}
.factory-strip img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:8px}
.faq__item{border:1px solid var(--line);border-radius:8px;margin-bottom:10px;background:#fff;overflow:hidden}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;text-align:start;font-family:var(--sans);font-weight:600;font-size:14.5px;color:var(--ink)}
.faq__q svg{width:16px;height:16px;color:var(--blue);transition:transform .3s}
.faq__item.is-open .faq__q svg{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq__a p{padding:0 20px 18px;color:var(--muted);font-size:13.5px;line-height:1.7}
.faq-right .sec-title{margin-bottom:14px}
.faq-right > p{color:var(--muted);font-size:14px;margin-bottom:26px}
.faq-right__img{width:100%;border-radius:12px;aspect-ratio:4/3;object-fit:cover}

/* ---------- cta ---------- */
.cta-band{padding:0 0 clamp(50px,7vw,90px);background:var(--gray);position:relative;z-index:2}
.cta-panel{background:linear-gradient(120deg,#1a4fd4,#123a9e);border-radius:20px;padding:clamp(30px,4vw,54px);display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,4vw,54px);color:#fff;box-shadow:0 30px 70px -40px rgba(11,31,66,.8)}
.cta-panel h2{font-family:var(--sans);font-weight:700;font-size:clamp(20px,2.2vw,27px);line-height:1.25}
.cta-panel p{margin:14px 0 24px;font-size:14px;color:rgba(255,255,255,.78);line-height:1.7}
.cta-panel__col--form{border-inline-start:1px solid rgba(255,255,255,.18);padding-inline-start:clamp(24px,3vw,44px)}
.quickform{display:grid;grid-template-columns:1fr 1fr auto;gap:10px}
.quickform textarea{grid-column:1/-1;min-height:84px;resize:vertical;background:#fff;color:var(--ink);border:0;border-radius:6px;padding:14px 16px;font:inherit;font-size:14px}
.quickform input{background:#fff;color:var(--ink);border:0;border-radius:6px;padding:13px 16px;font:inherit;font-size:14px}
.quickform .btn{justify-content:center;background:var(--navy);color:#fff}
.quickform .hp,.form .hp{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;white-space:nowrap!important;border:0!important;opacity:0!important}
.quickform__done{background:rgba(255,255,255,.12);border-radius:8px;padding:20px}
.quickform__done strong{display:block;font-family:var(--sans);font-size:16px;margin-bottom:6px}
.quickform__done p{font-size:13.5px;margin:0;color:rgba(255,255,255,.78)}

/* ---------- footer ---------- */
.footer{background:var(--navy);color:rgba(255,255,255,.72);padding:clamp(50px,6vw,80px) 0 0}
.footer__grid{display:grid;grid-template-columns:1.25fr .95fr .95fr .8fr .8fr;gap:clamp(20px,3vw,40px)}
.footer__brand p{margin-top:16px;font-size:13.5px;line-height:1.7;max-width:34ch}
.footer__addr{display:flex;gap:8px;align-items:flex-start}
.footer__addr svg{width:16px;height:16px;margin-top:4px;color:var(--gold)}
.footer__col h4{font-family:var(--sans);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:18px;position:relative;padding-bottom:12px}
.footer__col h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--gold)}
.footer__col h4.mt{margin-top:26px}
.footer__col ul{display:flex;flex-direction:column;gap:10px}
.footer__col a{font-size:13.5px;transition:color .2s}
.footer__col a:hover{color:var(--gold)}
.footer__bottom{margin-top:clamp(36px,5vw,60px);border-top:1px solid var(--line-dark);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:12px;flex-wrap:wrap}
.footer__bottom a:hover{color:var(--gold)}
.wa-float{position:fixed;inset-inline-end:22px;bottom:22px;z-index:90;display:inline-flex;align-items:center;gap:9px;background:#25d366;color:#fff;border-radius:999px;padding:12px 18px;box-shadow:0 18px 34px -14px rgba(0,0,0,.45);font-size:12.5px;font-weight:600}
.wa-float svg{width:20px;height:20px}
.wa-float span{display:none}
.wa-float:hover{transform:translateY(-2px)}
.totop{position:fixed;inset-inline-end:22px;bottom:76px;z-index:90;width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;opacity:0;visibility:hidden;transform:translateY(8px);transition:.3s}
.totop.is-on{opacity:1;visibility:visible;transform:none}
.totop svg{transform:rotate(-90deg)}

/* ---------- page hero / breadcrumbs ---------- */
.page-hero{background:linear-gradient(100deg,rgba(9,26,60,.94),rgba(18,58,158,.82)),url('/assets/img/gen/factory/factory-assembly_001.jpg') center/cover;color:#fff;padding:clamp(60px,8vw,104px) 0 clamp(40px,5vw,64px)}
.page-hero--short{padding:clamp(44px,6vw,72px) 0 clamp(30px,4vw,44px)}
.page-hero h1{font-family:var(--sans);font-weight:700;font-size:clamp(28px,3.8vw,46px);line-height:1.15;max-width:22ch;margin:10px 0 14px}
.page-hero p{color:rgba(255,255,255,.75);max-width:60ch;font-size:15px}
.crumbs{display:flex;gap:8px;align-items:center;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.6);margin-bottom:6px}
.crumbs a:hover{color:var(--gold)}

/* ---------- products layout ---------- */
.products-layout{display:grid;grid-template-columns:280px 1fr;gap:clamp(24px,3.5vw,46px);align-items:start}
.side__card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:18px}
.side__card h3{background:var(--blue);color:#fff;font-family:var(--sans);font-size:15px;font-weight:600;padding:15px 20px}
.side__cats li{border-bottom:1px solid var(--line)}
.side__cats a{display:flex;align-items:center;justify-content:space-between;padding:13px 20px;font-size:13.5px;transition:.2s}
.side__cats a:hover{background:var(--gray);color:var(--blue);padding-inline-start:24px}
.side__cats svg{width:13px;height:13px;opacity:.5}
.side__contact{padding:20px;display:flex;flex-direction:column;gap:12px}
.side__contact h3{background:none;color:var(--ink);padding:0;margin-bottom:4px}
.side__contact p{display:flex;gap:9px;font-size:12.8px;color:var(--muted);align-items:flex-start;line-height:1.5}
.side__contact svg{width:15px;height:15px;color:var(--blue);margin-top:2px}
.side__contact a{color:var(--text)}
.side__contact .btn{margin-top:8px;justify-content:center}
.filterbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.filter{padding:9px 16px;border-radius:999px;border:1px solid var(--line);font-size:12px;background:#fff;transition:.2s;white-space:nowrap}
.filter:hover{border-color:var(--blue);color:var(--blue)}
.filter.is-on{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ---------- pdp ---------- */
.pdp{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(26px,4vw,60px);align-items:start}
.pdp__main{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:12px;background:#eef2f9}
.pdp__thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.pdp__thumbs button{padding:0;border:2px solid transparent;border-radius:8px;overflow:hidden;background:none}
.pdp__thumbs button.is-on{border-color:var(--blue)}
.pdp__thumbs img{aspect-ratio:1/1;object-fit:cover}
.badge{display:inline-block;background:var(--gray);color:var(--blue);font-size:11px;letter-spacing:.16em;padding:7px 12px;border-radius:4px;font-weight:600}
.pdp__name{font-family:var(--sans);font-size:clamp(24px,2.6vw,34px);font-weight:700;margin:14px 0 10px;color:var(--ink)}
.pdp__blurb{color:var(--muted);font-size:14.5px}
.spec-table{width:100%;border-collapse:collapse;margin:22px 0}
.spec-table th,.spec-table td{text-align:start;padding:11px 12px;border-bottom:1px solid var(--line);font-size:13.5px}
.spec-table th{color:var(--muted);font-weight:500;width:42%}
.spec-table td{color:var(--ink);font-weight:500}
.pdp__actions{display:flex;gap:12px;flex-wrap:wrap;margin:6px 0 26px}
.feature-list{display:flex;flex-direction:column;gap:14px}
.feature-list li{display:flex;gap:14px;align-items:flex-start}
.feature-list span{font-family:var(--sans);font-weight:700;color:var(--blue);font-size:13px}
.feature-list p{font-size:13.5px;color:var(--muted)}

/* ---------- about / adv / video / exp / album ---------- */
.subnav{background:#fff;border-bottom:1px solid var(--line)}
.subnav .wrap{display:flex;gap:26px;padding-top:16px;padding-bottom:16px;overflow:auto;font-size:12.5px;letter-spacing:.04em;color:var(--muted);white-space:nowrap}
.subnav span{position:relative;padding-bottom:2px}
.subnav span:not(:last-child)::after{content:"|";margin-inline-start:26px;color:var(--line)}
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,4vw,60px);align-items:start}
.about-text h2{font-family:var(--sans);font-size:clamp(21px,2.2vw,27px);color:var(--ink);margin-bottom:18px}
.about-text p{color:var(--muted);margin-bottom:14px;font-size:14.5px}
.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px;border-top:1px solid var(--line);padding-top:22px}
.about-stats b{display:block;font-family:var(--sans);font-size:22px;color:var(--blue)}
.about-stats span{font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.adv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px;transition:.3s}
.adv-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.adv-card__n{font-family:var(--sans);font-weight:800;font-size:30px;color:var(--line);display:block;margin-bottom:14px}
.adv-card h3{font-family:var(--sans);font-size:17px;color:var(--ink);margin-bottom:10px}
.adv-card p{font-size:13.5px;color:var(--muted)}
.video-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.video-card{position:relative;border-radius:12px;overflow:hidden;display:block;padding:0;text-align:start}
.video-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .6s var(--ease)}
.video-card:hover img{transform:scale(1.04)}
.video-card__play{position:absolute;inset:0;display:grid;place-items:center}
.video-card__play svg{width:52px;height:52px;padding:14px;color:var(--blue);background:#fff;border-radius:50%}
.video-card__t{position:absolute;inset-inline-start:16px;bottom:16px;background:rgba(11,31,66,.82);color:#fff;font-size:12.5px;padding:8px 14px;border-radius:6px}
.exp-list{display:flex;flex-direction:column}
.exp-row{display:grid;grid-template-columns:90px 1fr 1fr 24px;gap:18px;align-items:center;padding:24px 4px;border-bottom:1px solid var(--line);transition:.3s}
.exp-row:first-child{border-top:1px solid var(--line)}
.exp-row:hover{background:var(--gray);padding-inline-start:14px}
.exp-row span:first-child{font-size:12px;color:var(--muted)}
.exp-row b{font-family:var(--sans);font-size:17px;color:var(--ink)}
.exp-row em{font-style:normal;font-size:13.5px;color:var(--muted)}
.exp-row__arrow{color:var(--blue)}
.album-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.album-grid figure{margin:0;border-radius:10px;overflow:hidden;background:#eef2f9}
.album-grid img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .7s var(--ease)}
.album-grid figure:hover img{transform:scale(1.05)}

/* ---------- blog ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.blog-card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:.3s}
.blog-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.blog-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .7s var(--ease)}
.blog-card:hover .blog-card__media img{transform:scale(1.05)}
.blog-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.blog-card__meta{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);font-weight:600}
.blog-card__body h3{font-family:var(--sans);font-size:17px;color:var(--ink);margin:10px 0 8px;line-height:1.4}
.blog-card__body p{font-size:13px;color:var(--muted);flex:1}
.blog-card__more{margin-top:14px;color:var(--blue)}
.article{max-width:820px;margin:0 auto}
.article__meta{display:flex;gap:12px;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:20px}
.article__cover{width:100%;border-radius:12px;margin-bottom:28px;aspect-ratio:16/9;object-fit:cover}
.article__body p{margin-bottom:18px;font-size:15.5px;line-height:1.85;color:var(--text)}
.related{margin-top:56px;border-top:1px solid var(--line);padding-top:36px}
.related h2{font-family:var(--sans);font-size:20px;margin-bottom:22px;color:var(--ink)}

/* ---------- contact ---------- */
.contact-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,4vw,60px);align-items:start}
.contact-info h2{font-family:var(--sans);font-size:22px;color:var(--ink);margin-bottom:20px}
.contact-info__line{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.contact-info__line svg{width:17px;height:17px;color:var(--blue);margin-top:3px}
.contact-info__line a:hover{color:var(--blue)}
.contact-info__img{width:100%;border-radius:12px;margin-top:26px;aspect-ratio:4/3;object-fit:cover}
.form{background:var(--gray);border-radius:16px;padding:clamp(24px,3vw,40px)}
.form h2{font-family:var(--sans);font-size:20px;color:var(--ink);margin-bottom:20px}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field span{font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600}
.field input,.field select,.field textarea{border:1px solid var(--line);background:#fff;border-radius:8px;padding:13px 15px;font:inherit;font-size:14px;outline:0;transition:border .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(21,70,200,.12)}
.field textarea{resize:vertical;min-height:130px}

.turnstile{margin-top:14px}
.form__note{font-size:12px;color:var(--muted);margin:16px 0}
.form__error{color:#a3271c;background:#fbeae7;border:1px solid #f0c9c1;border-radius:8px;padding:12px 14px;font-size:13px;margin-top:14px}
.form__done{margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px}
.form__done strong{display:block;font-family:var(--sans);font-size:17px;color:var(--ink);margin-bottom:6px}
.form__done p{font-size:13.5px;color:var(--muted)}
.legal{max-width:820px;margin:0 auto}
.legal p{margin-bottom:16px;font-size:15px;line-height:1.85;color:var(--text)}

/* ---------- video modal ---------- */
.vmodal{position:fixed;inset:0;z-index:200;background:rgba(5,14,30,.9);display:none;align-items:center;justify-content:center;padding:var(--pad)}
.vmodal.is-open{display:flex}
.vmodal__box{position:relative;width:min(980px,100%);background:#000;border-radius:12px;overflow:hidden}
.vmodal__box img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.55}
.vmodal__msg{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:#fff;text-align:center;padding:24px}
.vmodal__msg b{font-family:var(--sans);font-size:20px}
.vmodal__msg p{font-size:13.5px;color:rgba(255,255,255,.75);max-width:44ch}
.vmodal__close{position:absolute;inset-inline-end:12px;top:12px;color:#fff;background:rgba(0,0,0,.4);border-radius:50%;width:38px;height:38px;display:grid;place-items:center}

/* ---------- page fade / reveal ---------- */
.page-fade{position:fixed;inset:0;background:var(--navy);z-index:300;pointer-events:none;opacity:0;transition:opacity .45s ease}
.page-fade.is-on{opacity:1}
html.js [data-reveal]{opacity:0;transform:translateY(26px)}
html.js [data-reveal].reveal-done{opacity:1;transform:none}
.reveal-done{opacity:1!important;transform:none!important}

/* ---------- admin (existing page compatibility) ---------- */
.admin{max-width:1100px;margin:0 auto;padding:32px var(--pad) 80px}
.admin table{width:100%;border-collapse:collapse;font-size:13.5px;margin-top:18px}
.admin th,.admin td{text-align:start;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.admin th{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.admin input{width:100%;max-width:420px;padding:12px 14px;border:1px solid var(--line);background:#fff;font:inherit}
.admin button{padding:12px 22px;background:var(--navy);color:#fff;font:inherit;cursor:pointer;border:0}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1.2fr 1fr 1fr 1fr}
  .footer__col:last-child{grid-column:1/-1;display:flex;gap:40px;flex-wrap:wrap}
}
@media (max-width:1024px){
  .nav{display:none}
  .burger{display:grid}
  .hero__content{max-width:100%}
  .prod-grid,.prod-grid--3{grid-template-columns:repeat(2,1fr)}
  .why-grid,.blog-grid,.adv-grid,.video-grid,.album-grid{grid-template-columns:repeat(2,1fr)}
  .blog-home,.faq-wrap,.cta-panel,.about-grid,.pdp,.contact-layout{grid-template-columns:1fr}
  .cta-panel__col--form{border-inline-start:0;border-top:1px solid rgba(255,255,255,.18);padding-inline-start:0;padding-top:26px}
  .products-layout{grid-template-columns:1fr}
  .side{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .stats-band__inner{grid-template-columns:repeat(2,1fr);row-gap:28px}
  .why{background-attachment:scroll}
}
@media (max-width:680px){
  .topbar__contact{display:none}
  .topbar__inner{height:34px}
  .topbar__quote{font-size:11.5px;white-space:nowrap}
  .topbar__right{gap:10px}
  html[lang="zh-CN"] .hero__title{max-width:20ch}
  .footer__grid{grid-template-columns:1fr}
  .topbar__contact a:last-child{display:none}
  .topbar__inner{height:38px}
  .header__inner{height:68px;gap:12px}
  .brand__mark{width:38px;height:38px;font-size:12px}
  .brand__text b{font-size:14px}
  .brand__text i{display:none}
  .header__quote{display:none}
  .hero{min-height:640px}
  .hero__content{padding-top:20px;padding-bottom:96px}
  .cat-grid,.prod-grid,.prod-grid--3,.why-grid,.blog-grid,.adv-grid,.video-grid,.album-grid,.side{grid-template-columns:1fr}
  .form__grid{grid-template-columns:1fr}
  .quickform{grid-template-columns:1fr}
  .stats-band__inner{grid-template-columns:1fr 1fr}
  .news-row{grid-template-columns:84px 1fr;gap:12px}
  .news-row__arrow{display:none}
  .exp-row{grid-template-columns:60px 1fr;row-gap:6px}
  .exp-row em,.exp-row__arrow{display:none}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .wa-float span{display:inline}
  .article{padding:0 2px}
  .hero__nav{display:none}
}

/* ---------- RTL ---------- */
[dir="rtl"] .nav__sub{inset-inline-start:auto;inset-inline-end:0}
[dir="rtl"] .news-row:hover{transform:translateX(-6px)}
[dir="rtl"] .link-arrow svg,[dir="rtl"] .btn svg,[dir="rtl"] .prod-card__more svg{transform:scaleX(-1)}
[dir="rtl"] .btn:hover svg{transform:scaleX(-1) translateX(4px)}
[dir="rtl"] .footer__col h4::after{left:auto;right:0}
[dir="rtl"] .hero__slide::after{background:linear-gradient(270deg,rgba(8,20,40,.82) 0%,rgba(8,20,40,.55) 45%,rgba(8,20,40,.15) 100%)}
[dir="rtl"] .hero__nav button:first-child svg{transform:rotate(-90deg)}
[dir="rtl"] .hero__nav button:last-child svg{transform:rotate(90deg)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important;scroll-behavior:auto!important}
  [data-reveal]{opacity:1!important;transform:none!important}
}

/* ---------- v2 polish ---------- */
html[lang="zh-CN"] .hero__title{max-width:20ch}
html[lang="ar"] .hero__title{max-width:18ch}
[dir="rtl"] .topbar__contact a,[dir="rtl"] .contact-info__line a,[dir="rtl"] .footer__col a[href^="tel:"],[dir="rtl"] .footer__col a[href^="mailto:"],[dir="rtl"] .brand__text i{unicode-bidi:isolate;direction:ltr}
[dir="rtl"] .topbar__contact a span,[dir="rtl"] .contact-info__line a{display:inline-block}

/* =========================================================
   v3: transparent header over hero (reference parity)
   ========================================================= */
.site-head{position:fixed;inset:0 0 auto 0;z-index:100;transition:box-shadow .35s var(--ease)}
.site-head .topbar{background:transparent;transition:background .35s}
.site-head .header{position:static;background:transparent;border-bottom:1px solid transparent;box-shadow:none;transition:background .35s,border-color .35s,box-shadow .35s}
.site-head.is-stuck,.has-head .site-head{background:#fff}
.site-head.is-stuck .topbar,.has-head .topbar{background:var(--blue)}
.site-head.is-stuck .header,.has-head .header{background:#fff;border-bottom-color:var(--line);box-shadow:0 12px 30px -24px rgba(11,31,66,.5)}
.page-home .site-head:not(.is-stuck) .nav__item > a{color:#fff}
.page-home .site-head:not(.is-stuck) .nav__item:hover > a,
.page-home .site-head:not(.is-stuck) .nav__item > a.is-active{color:var(--gold)}
.page-home .site-head:not(.is-stuck) .brand__text b{color:#fff}
.page-home .site-head:not(.is-stuck) .brand__text i{color:rgba(255,255,255,.62)}
.page-home .site-head:not(.is-stuck) .iconbtn{color:#fff}
.page-home .site-head:not(.is-stuck) .burger span{background:#fff}
.page-home .site-head:not(.is-stuck) .header__quote{background:rgba(23,74,157,.55);color:#fff}
.page-home .site-head:not(.is-stuck) .lang__btn{color:#fff}
.page-home .site-head:not(.is-stuck) .topbar__contact a{color:rgba(255,255,255,.88)}
.page-home .site-head:not(.is-stuck) .topbar__quote{color:#fff}
.has-head{padding-top:126px}
.page-home .hero{min-height:100vh;padding-top:0}
.page-home .hero__content{padding-top:150px}
.hero__actions .hero-link{align-self:center;color:#fff;font-size:12px;letter-spacing:.18em;text-transform:uppercase;border-bottom:1px solid rgba(255,255,255,.45);padding-bottom:5px;margin-inline-end:10px}
.hero__actions .hero-link:hover{color:var(--gold);border-color:var(--gold)}
.btn--glass{background:rgba(23,74,157,.6);color:#fff;backdrop-filter:blur(2px)}
.btn--glass:hover{background:rgba(23,74,157,.9);transform:translateY(-2px)}
@media (max-width:1024px){ .has-head{padding-top:110px} }
@media (max-width:680px){
  .has-head{padding-top:102px}
  .page-home .hero__content{padding-top:120px}
  .page-home .site-head:not(.is-stuck) .header__quote{display:none}
}

/* v3.1: section eyebrow above title (reference parity) */
.section__head .eyebrow{display:block;margin:0 0 12px;text-align:center}
.sec-title--left + .eyebrow{text-align:start}