/* Cyfoss static site — no external fonts or scripts (China-friendly) */
:root{
  --dark:#0e1b26; --dark-2:#14293a; --text:#22303c; --muted:#5b6b78;
  --accent:#e8a020; --accent-dark:#c9880f; --bg:#ffffff; --bg-alt:#f2f6f8;
  --radius:10px; --maxw:1140px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Hiragino Kaku Gothic ProN","Yu Gothic","Malgun Gothic","Segoe UI Arabic","Geeza Pro",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--text);line-height:1.65;background:var(--bg)}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 26px;border-radius:6px;font-weight:600;transition:background .2s}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark)}
.btn-lg{padding:15px 34px;font-size:1.05rem}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--accent);margin-bottom:6px}
h1{font-size:2.6rem;line-height:1.2;margin-bottom:18px}
h2{font-size:1.9rem;line-height:1.3;margin-bottom:14px}
h3{font-size:1.15rem;margin-bottom:10px}
.lead{font-size:1.1rem;max-width:720px}
.section{padding:70px 0}
.section.alt{background:var(--bg-alt)}
.section-intro{max-width:760px;margin-bottom:34px;color:var(--muted)}
/* header */
.site-header{background:var(--dark);color:#fff;position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:20px}
.logo-text{font-weight:800;letter-spacing:.14em;font-size:1.15rem}
.logo-cn{font-weight:700;font-size:1.05rem;color:var(--accent)}
.logo-cn.dark{display:inline-block;margin-inline-start:8px}
.main-nav ul{display:flex;gap:26px}
.main-nav a{opacity:.85;font-weight:500}
.main-nav a:hover,.main-nav a.active{opacity:1;color:var(--accent)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}
/* language switcher */
.lang-switch{position:relative}
.lang-btn{background:none;border:1px solid rgba(255,255,255,.35);color:#fff;padding:7px 12px;border-radius:6px;cursor:pointer;font-size:.9rem}
.lang-menu{display:none;position:absolute;inset-inline-end:0;top:calc(100% + 6px);background:#fff;color:var(--text);border-radius:8px;box-shadow:0 8px 28px rgba(0,0,0,.18);min-width:150px;overflow:hidden}
.lang-menu.open{display:block}
.lang-menu a{display:block;padding:9px 16px}
.lang-menu a:hover{background:var(--bg-alt)}
.lang-menu a.current{font-weight:700;color:var(--accent)}
/* hero */
.hero{background:linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 60%,#1d3d55 100%);color:#fff;padding:110px 0 90px}
.hero .lead{opacity:.9;margin-bottom:30px}
.page-hero{background:linear-gradient(135deg,var(--dark),var(--dark-2));color:#fff;padding:70px 0 60px}
.page-hero .lead{opacity:.9}
/* stats */
.stats{background:var(--accent);color:#fff;padding:34px 0}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}
.stat-num{font-size:2.4rem;font-weight:800;display:block}
.stat-label{opacity:.95}
/* cards */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:#fff;border:1px solid #e3eaef;border-radius:var(--radius);padding:28px;box-shadow:0 2px 10px rgba(14,27,38,.05)}
.section.alt .card{border-color:#dbe6ec}
.card p{color:var(--muted)}
.product-card .num{font-size:1.6rem;font-weight:800;color:var(--accent)}
.product-card ul,.industry-card ul{list-style:disc;padding-inline-start:20px;color:var(--muted)}
.industry-card h3{color:var(--dark-2)}
.product-img{max-height:190px;width:auto;margin:6px 0 14px;object-fit:contain}
.card-img{border-radius:8px;margin-bottom:16px}
/* two col */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.img-stack{display:grid;gap:18px}
.img-stack img{border-radius:var(--radius)}
.experience{display:flex;gap:20px;margin-top:26px;align-items:flex-start}
.exp-num{font-size:3.2rem;font-weight:800;color:var(--accent);line-height:1}
/* partners */
.logo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:22px;align-items:center}
.logo-grid img{max-height:64px;margin:0 auto;object-fit:contain;filter:grayscale(35%)}
/* callout & CTA */
.callout{text-align:center;max-width:760px}
.callout p{margin:12px 0 22px;color:var(--muted)}
.cta-band{background:var(--dark);color:#fff;padding:64px 0;text-align:center}
.cta-band p{opacity:.85;max-width:760px;margin:0 auto 24px}
.cta-band h2{margin-bottom:14px}
/* contact */
.contact-list{margin:18px 0 26px;display:grid;gap:10px}
.contact-list a{color:var(--accent-dark);font-weight:600}
.accordion details{border:1px solid #e3eaef;border-radius:8px;margin-bottom:12px;padding:14px 18px;background:#fff}
.accordion summary{font-weight:600;cursor:pointer}
.accordion p{margin-top:10px;color:var(--muted)}
.wide-img{border-radius:var(--radius);margin-top:10px}
/* footer */
.site-footer{background:var(--dark);color:#cfd9e0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:36px;padding:54px 20px}
.footer-brand img{max-height:26px;margin-bottom:14px;background:#fff;padding:4px 8px;border-radius:4px}
.footer-nav ul{display:grid;gap:8px}
.footer-nav a:hover,.footer-contact a:hover{color:var(--accent)}
.footer-contact p{margin-bottom:6px}
.social{display:flex;flex-wrap:wrap;gap:14px;margin-top:14px}
.social a{font-size:.9rem;border:1px solid rgba(255,255,255,.25);padding:5px 12px;border-radius:20px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:18px;font-size:.85rem;color:#8fa1ae}
.footer-bottom a{text-decoration:underline}
/* RTL (Arabic) */
[dir="rtl"] .eyebrow{letter-spacing:0}
/* responsive */
@media(max-width:900px){
  h1{font-size:2rem}
  .cards-3,.cards-2{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr}
  .main-nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--dark-2);padding:16px 20px}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:14px}
  .nav-toggle{display:block}
  .btn.btn-accent{padding:10px 16px}
}
/* phone numbers must always render left-to-right, even in RTL (Arabic) pages */
a[href^="tel:"]{direction:ltr;unicode-bidi:isolate;display:inline-block}