/* Chunhua Crane — Industrial B2B Design System v3 (2026-06-25 PM)
   Upgrades: refined typography, decorative hero, SVG icons, micro-interactions */

:root{
  --navy:#0c2461;        /* deeper navy */
  --navy-d:#08183f;
  --navy-2:#1e3a8a;
  --navy-3:#2952cc;
  --amber:#fbbf24;
  --amber-d:#d97706;
  --amber-soft:#fef3c7;
  --green:#16a34a;
  --green-d:#15803d;
  --green-wa:#25d366;
  --ink:#0a0f1e;
  --ink-2:#1e293b;
  --ink-3:#334155;
  --muted:#64748b;
  --muted-2:#94a3b8;
  --line:#e6eaf0;
  --line-2:#cbd5e1;
  --line-soft:#f1f5f9;
  --bg:#fafbfc;
  --bg-card:#ffffff;
  --bg-soft:#f4f7fb;
  --bg-deep:#eef2f8;
  --bg-hero:linear-gradient(135deg,#0c2461 0%,#1e3a8a 45%,#2952cc 100%);
  --bg-hero-mesh:radial-gradient(at 20% 25%,rgba(251,191,36,.18) 0,transparent 45%),radial-gradient(at 80% 30%,rgba(37,211,102,.12) 0,transparent 55%),radial-gradient(at 50% 90%,rgba(41,82,204,.5) 0,transparent 50%);
  --shadow-xs:0 1px 2px rgba(15,23,42,.06);
  --shadow-sm:0 2px 4px rgba(15,23,42,.06),0 1px 2px rgba(15,23,42,.04);
  --shadow:0 4px 12px rgba(15,23,42,.08),0 2px 4px rgba(15,23,42,.04);
  --shadow-lg:0 16px 36px -8px rgba(12,36,97,.18),0 4px 12px rgba(15,23,42,.06);
  --shadow-xl:0 24px 60px -12px rgba(12,36,97,.25),0 8px 16px rgba(15,23,42,.08);
  --radius-sm:6px;
  --radius:10px;
  --radius-lg:14px;
  --radius-xl:20px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter','Source Sans 3',-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  font-size:15.5px;
  line-height:1.6;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-feature-settings:"ss01","cv11";
}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy-2);text-decoration:none;transition:color .15s var(--ease)}
a:hover{color:var(--navy)}
::selection{background:var(--amber);color:var(--navy-d)}

.wrap{max-width:1280px;margin:0 auto;padding:0 24px}

/* === Header === */
.site-header{
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:50;
  box-shadow:0 1px 0 rgba(15,23,42,.04);
}
.site-header .wrap{display:flex;align-items:center;gap:32px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;text-decoration:none;color:inherit;flex-shrink:0;transition:opacity .15s var(--ease)}
.brand:hover{opacity:.85}
.brand-mark,.brand-text{display:none}
.brand-svg{height:44px;width:auto;display:block}

.primary-nav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:600;flex:1}
.primary-nav a{color:var(--ink-2);text-decoration:none;padding:6px 0;position:relative;white-space:nowrap;transition:color .15s var(--ease)}
.primary-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:center;transition:transform .25s var(--ease)}
.primary-nav a:hover{color:var(--navy)}
.primary-nav a:hover::after{transform:scaleX(1)}
.primary-nav a.has-mega::before{content:"";display:inline-block;width:7px;height:7px;margin-right:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);vertical-align:middle;opacity:.6}
.mega-caret{display:none}

.lang-switch{position:relative;flex-shrink:0}
.lang-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 13px;border:1px solid var(--line);border-radius:8px;
  background:#fff;color:var(--ink);font:inherit;font-weight:600;font-size:13px;
  cursor:pointer;transition:all .15s var(--ease)
}
.lang-btn:hover{border-color:var(--navy);background:var(--bg-soft)}
.lang-btn .lang-flag{font-size:15px;line-height:1}
.lang-btn .lang-name{max-width:96px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lang-btn .lang-caret{font-size:9px;color:var(--muted);margin-left:2px}
.lang-menu{
  position:absolute;top:calc(100% + 8px);right:0;min-width:200px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-xl);padding:8px;display:none;z-index:120;
  animation:slideDown .2s var(--ease-out)
}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.lang-switch.open .lang-menu{display:block}
.lang-item{
  display:flex;align-items:center;gap:10px;padding:9px 12px;
  border-radius:8px;text-decoration:none;color:var(--ink);
  font-size:13.5px;font-weight:500;transition:background .12s var(--ease)
}
.lang-item:hover{background:var(--bg-soft)}
.lang-item.on{background:var(--navy);color:#fff;font-weight:600}
.lang-item.on:hover{background:var(--navy)}

.header-cta{
  display:inline-flex;align-items:center;gap:7px;padding:10px 18px;
  background:var(--green-wa);color:#fff;border-radius:8px;
  font-weight:700;font-size:13.5px;text-decoration:none;
  transition:all .2s var(--ease);
  flex-shrink:0;white-space:nowrap;
  box-shadow:0 4px 10px rgba(37,211,102,.25)
}
.header-cta:hover{background:#1cb359;transform:translateY(-1px);box-shadow:0 8px 18px rgba(37,211,102,.4);color:#fff}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:transparent;border:0;padding:6px;cursor:pointer}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.2s var(--ease)}

/* === Megamenu === */
.mega{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-xl);padding:24px 0;display:none;z-index:40}
.has-mega:hover + .mega, .mega:hover{display:block}
.mega-inner{max-width:1280px;margin:0 auto;padding:0 24px}

/* === Buttons === */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:10px;font-weight:700;
  text-decoration:none;border:0;cursor:pointer;
  font-size:14px;letter-spacing:.01em;
  transition:all .2s var(--ease);
  line-height:1;position:relative;overflow:hidden
}
.btn.primary{background:var(--navy);color:#fff;box-shadow:0 4px 10px rgba(12,36,97,.2)}
.btn.primary:hover{background:var(--navy-d);color:#fff;transform:translateY(-1px);box-shadow:0 10px 20px rgba(12,36,97,.3)}
.btn.wa{background:var(--green-wa);color:#fff;box-shadow:0 4px 10px rgba(37,211,102,.25)}
.btn.wa:hover{background:#1cb359;color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(37,211,102,.4)}
.btn.amber{background:var(--amber);color:var(--navy-d);box-shadow:0 4px 10px rgba(251,191,36,.3)}
.btn.amber:hover{background:#f59e0b;color:var(--navy-d);transform:translateY(-1px);box-shadow:0 10px 22px rgba(251,191,36,.45)}
.btn.ghost{background:transparent;color:var(--navy);border:1.5px solid var(--navy);box-shadow:none}
.btn.ghost:hover{background:var(--navy);color:#fff}
.btn.lg{padding:15px 32px;font-size:15px}

/* === Hero (升级) === */
.hero{padding:80px 0 72px;background:var(--bg-hero);color:#fff;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:var(--bg-hero-mesh);
  pointer-events:none
}
.hero::after{
  content:"";position:absolute;right:-100px;top:-100px;width:400px;height:400px;
  background:radial-gradient(circle,rgba(251,191,36,.15),transparent 70%);
  pointer-events:none;border-radius:50%
}
.hero .wrap{position:relative;z-index:1}
.hero .badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);
  padding:6px 14px;border-radius:99px;font-size:12px;font-weight:600;
  letter-spacing:.04em;margin-bottom:22px;
  border:1px solid rgba(255,255,255,.18);
  backdrop-filter:blur(8px)
}
.hero .badge::before{content:"";width:6px;height:6px;background:var(--amber);border-radius:50%;box-shadow:0 0 8px var(--amber)}
.hero h1{
  font-size:60px;font-weight:900;line-height:1.02;
  letter-spacing:-.03em;margin-bottom:22px;
  background:linear-gradient(180deg,#fff 0%,#dbeafe 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero h1 .hl{
  display:inline-block;
  background:linear-gradient(135deg,#fbbf24 0%,#fcd34d 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero .lead{font-size:18px;line-height:1.65;opacity:.92;margin-bottom:32px;max-width:580px;font-weight:400;color:#dbeafe}
.hero .stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:42px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,.15)
}
.hero .stat .v{font-size:34px;font-weight:900;color:var(--amber);letter-spacing:-.025em;line-height:1.1}
.hero .stat .l{font-size:11.5px;opacity:.78;margin-top:6px;text-transform:uppercase;letter-spacing:.08em;font-weight:600}

.hero-aside{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18);
  border-radius:18px;padding:28px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 24px 48px -12px rgba(0,0,0,.25)
}
.hero-search-form{display:flex;gap:8px;margin-bottom:16px}
.hero-search-form input{flex:1;padding:13px 16px;border:0;border-radius:9px;font-size:14px;background:#fff;color:var(--ink);outline:none;font-weight:500}
.hero-search-form input:focus{box-shadow:0 0 0 3px rgba(251,191,36,.4)}
.hero-search-form button{padding:13px 22px;background:var(--amber);color:var(--navy-d);border:0;border-radius:9px;font-weight:800;cursor:pointer;font-size:13px;transition:all .15s var(--ease)}
.hero-search-form button:hover{background:#f59e0b;transform:translateY(-1px)}
.hero-aside .popular{font-size:13px;opacity:.92;line-height:1.85}
.hero-aside .popular strong{color:var(--amber);font-weight:700;text-transform:uppercase;font-size:11px;letter-spacing:.08em;display:block;margin-bottom:6px}
.hero-aside .popular a{color:#fff;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.3);padding-bottom:1px;transition:all .15s var(--ease)}
.hero-aside .popular a:hover{color:var(--amber);border-color:var(--amber)}

/* === Section === */
.section{padding:72px 0;position:relative}
.section.tight{padding:48px 0}
.section.soft{background:var(--bg-soft)}
.section.deep{background:var(--bg-deep)}
.section-head{text-align:center;margin-bottom:44px;max-width:760px;margin-left:auto;margin-right:auto}
.section-head .eyebrow{
  display:inline-block;text-transform:uppercase;
  font-size:11px;letter-spacing:.18em;
  color:var(--navy-2);font-weight:800;margin-bottom:14px;
  padding:5px 12px;background:var(--bg-deep);
  border-radius:6px;border:1px solid var(--line)
}
.section-head h2{
  font-size:40px;font-weight:900;color:var(--ink);
  letter-spacing:-.025em;margin-bottom:14px;line-height:1.15
}
.section-head h2 .hl{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-3) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.section-head p{color:var(--muted);font-size:16px;line-height:1.65;margin-top:6px}

/* === Hub cards (升级) === */
.hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px}
.hub-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-xl);padding:28px 26px;
  text-decoration:none;color:inherit;
  transition:all .25s var(--ease);
  display:block;position:relative;overflow:hidden
}
.hub-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(12,36,97,.03) 0%,transparent 50%);
  opacity:0;transition:opacity .25s var(--ease)
}
.hub-card::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--amber),var(--amber-d));
  transform:scaleY(0);transform-origin:top;transition:transform .25s var(--ease)
}
.hub-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-xl);border-color:transparent}
.hub-card:hover::before{opacity:1}
.hub-card:hover::after{transform:scaleY(1)}
.hub-card .badge{
  display:inline-block;font-size:11px;font-weight:800;letter-spacing:.06em;
  color:var(--amber-d);text-transform:uppercase;
  background:var(--amber-soft);padding:4px 10px;border-radius:6px;
  margin-bottom:14px;border:1px solid #fde68a
}
.hub-card h3{font-size:20px;font-weight:800;color:var(--navy);margin-bottom:12px;letter-spacing:-.015em;line-height:1.25}
.hub-card p{font-size:13.5px;line-height:1.6;color:var(--muted)}
.hub-card .more{margin-top:18px;color:var(--navy-2);font-weight:800;font-size:13px;display:inline-flex;align-items:center;gap:6px;letter-spacing:.02em}
.hub-card .more::after{content:"→";transition:transform .15s var(--ease)}
.hub-card:hover .more::after{transform:translateX(6px)}

/* === Why section (升级 - SVG icons) === */
.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;margin-top:32px}
.why-item{
  text-align:center;padding:32px 22px;background:#fff;
  border-radius:var(--radius-xl);border:1px solid var(--line);
  transition:all .25s var(--ease);
  position:relative;overflow:hidden
}
.why-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:60px;height:3px;background:var(--amber);border-radius:0 0 4px 4px;
  opacity:0;transition:opacity .25s var(--ease)
}
.why-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.why-item:hover::before{opacity:1}
.why-item .ico{
  width:64px;height:64px;margin:0 auto 16px;
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-3) 100%);
  border-radius:16px;display:flex;align-items:center;justify-content:center;
  color:#fff;box-shadow:0 8px 16px -4px rgba(12,36,97,.3)
}
.why-item .ico svg{width:32px;height:32px}
.why-item h4{font-size:17px;font-weight:800;color:var(--ink);margin-bottom:10px;letter-spacing:-.01em}
.why-item p{font-size:13.5px;color:var(--muted);line-height:1.65}

/* === Page head === */
.page-head{background:#fff;border-bottom:1px solid var(--line);padding:48px 0 40px;position:relative}
.page-head.soft{background:var(--bg-soft)}
.page-head.dark{background:var(--bg-hero);color:#fff;position:relative;overflow:hidden}
.page-head.dark::before{content:"";position:absolute;inset:0;background:var(--bg-hero-mesh);pointer-events:none}
.page-head.dark .wrap{position:relative;z-index:1}
.page-head.dark h1{color:#fff;background:linear-gradient(180deg,#fff 0%,#dbeafe 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-head.dark .crumb a{color:var(--amber)}
.page-head h1{font-size:42px;font-weight:900;color:var(--ink);letter-spacing:-.025em;margin-bottom:10px;line-height:1.15}
.page-head p{color:var(--muted);font-size:15.5px;line-height:1.65;max-width:780px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px;font-weight:500}
.crumb a{color:var(--navy-2);text-decoration:none;transition:color .15s var(--ease)}
.crumb a:hover{color:var(--navy);text-decoration:underline}
.crumb span{color:var(--ink-2);font-weight:600}

/* === Filter chips === */
.filter-chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.chip{
  padding:8px 16px;border:1px solid var(--line);
  border-radius:99px;background:#fff;color:var(--ink-2);
  text-decoration:none;font-size:13px;font-weight:600;
  transition:all .15s var(--ease)
}
.chip:hover{border-color:var(--navy);color:var(--navy);transform:translateY(-1px)}
.chip.on{background:var(--navy);color:#fff;border-color:var(--navy);box-shadow:0 4px 10px rgba(12,36,97,.2)}

/* === Product cards (升级 - 精致 hover) === */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.prod-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;
  text-decoration:none;color:inherit;
  transition:all .25s var(--ease);
  display:flex;flex-direction:column;position:relative
}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:transparent}
.prod-card .img{aspect-ratio:4/3;background:linear-gradient(135deg,var(--bg-soft) 0%,var(--bg-deep) 100%);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.prod-card .img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease-out)}
.prod-card:hover .img img{transform:scale(1.06)}
.prod-card .img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(12,36,97,.3));opacity:0;transition:opacity .25s var(--ease)}
.prod-card:hover .img::after{opacity:1}
.prod-card .img .placeholder{color:var(--line-2);font-size:48px}
.prod-card .body{padding:16px 18px;flex:1;display:flex;flex-direction:column}
.prod-card h3{font-size:14.5px;font-weight:700;color:var(--ink);line-height:1.4;margin-bottom:10px;min-height:40px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;letter-spacing:-.005em}
.prod-card .spec{font-size:12px;color:var(--muted);margin-bottom:12px;display:flex;flex-wrap:wrap;gap:6px}
.prod-card .spec span{background:var(--bg-soft);padding:3px 9px;border-radius:5px;font-weight:600;color:var(--ink-2)}
.prod-card .view{margin-top:auto;color:var(--navy-2);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:4px;letter-spacing:.02em}
.prod-card .view::after{content:"→";transition:transform .15s var(--ease)}
.prod-card:hover .view::after{transform:translateX(4px)}

/* === Pagination === */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:36px}
.pagination a{padding:10px 16px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink-2);font-weight:700;font-size:13px;background:#fff;transition:all .15s var(--ease)}
.pagination a:hover{border-color:var(--navy);color:var(--navy);transform:translateY(-1px)}
.pagination a.on{background:var(--navy);color:#fff;border-color:var(--navy);box-shadow:0 4px 10px rgba(12,36,97,.2)}

/* === CTA strip (升级 - 装饰背景) === */
.cta-strip{background:var(--bg-hero);color:#fff;padding:60px 0;text-align:center;position:relative;overflow:hidden}
.cta-strip::before{content:"";position:absolute;inset:0;background:var(--bg-hero-mesh);pointer-events:none}
.cta-strip::after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;background:radial-gradient(circle,rgba(251,191,36,.08),transparent 60%);pointer-events:none;border-radius:50%}
.cta-strip .wrap{position:relative;z-index:1}
.cta-strip h3{font-size:30px;font-weight:900;margin-bottom:12px;letter-spacing:-.02em;line-height:1.2}
.cta-strip p{opacity:.92;margin-bottom:26px;max-width:600px;margin-left:auto;margin-right:auto;font-size:15.5px;line-height:1.65}

/* === Footer (升级) === */
.site-foot{background:#08183f;color:#cbd5e1;padding:64px 0 0;position:relative;overflow:hidden}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--amber),transparent)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{color:#94a3b8;font-size:13.5px;line-height:1.7;margin:18px 0;max-width:320px}
.foot-brand .foot-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;margin-top:18px}
.foot-brand .foot-contact a{color:#cbd5e1;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:color .15s var(--ease)}
.foot-brand .foot-wa{color:var(--green-wa) !important;font-weight:700}
.foot-brand .foot-contact a:hover{color:#fff}
.foot-grid h5{font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:#94a3b8;font-weight:800;margin-bottom:18px}
.foot-grid a{display:block;color:#cbd5e1;font-size:14px;padding:6px 0;text-decoration:none;transition:color .15s var(--ease);font-weight:500}
.foot-grid a:hover{color:#fff;padding-left:4px}
.foot-bot{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;margin-top:52px;background:#040b22}
.foot-bot .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;color:#64748b;font-size:12px}

/* === Tables (升级) === */
table.t{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs)}
table.t th{background:var(--bg-soft);text-align:left;padding:13px 16px;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-weight:800;border-bottom:2px solid var(--line)}
table.t td{padding:12px 16px;border-bottom:1px solid var(--line-soft);transition:background .12s var(--ease)}
table.t tbody tr:hover td{background:var(--bg-soft)}
table.t tr:last-child td{border-bottom:0}
.t.strong td{font-weight:700}
.green{color:var(--green-d);font-weight:700}
.red{color:#dc2626;font-weight:700}
.strong{font-weight:700}

/* === FAQ / details (升级) === */
details.faq{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:0;overflow:hidden;
  transition:all .2s var(--ease)
}
details.faq:hover{border-color:var(--line-2)}
details.faq[open]{box-shadow:var(--shadow);border-color:var(--navy)}
details.faq summary{padding:18px 24px;font-weight:700;cursor:pointer;color:var(--ink);font-size:15.5px;list-style:none;position:relative;padding-right:54px;letter-spacing:-.005em;transition:color .15s var(--ease)}
details.faq summary:hover{color:var(--navy)}
details.faq summary::after{content:"";position:absolute;right:24px;top:50%;transform:translateY(-50%);width:14px;height:14px;background-image:linear-gradient(currentColor,currentColor),linear-gradient(currentColor,currentColor);background-position:center;background-size:14px 2px,2px 14px;background-repeat:no-repeat;color:var(--muted);transition:all .2s var(--ease)}
details.faq[open] summary::after{background-size:14px 2px,2px 0;color:var(--navy)}
details.faq summary::-webkit-details-marker{display:none}
details.faq p{padding:0 24px 20px;color:var(--ink-3);line-height:1.75;font-size:14px;margin:0}

/* === Forms === */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid label, label.full{display:block;font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:-.005em}
.form-grid input, .form-grid select, .form-grid textarea, label.full input, label.full select, label.full textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:8px;
  font-size:14px;font-family:inherit;margin-top:8px;background:#fff;
  transition:all .15s var(--ease)
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus, label.full input:focus, label.full select:focus, label.full textarea:focus{
  border-color:var(--navy);outline:none;box-shadow:0 0 0 4px rgba(12,36,97,.08)
}
.req{color:#dc2626}

/* === Helper components === */
.intro-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 32px;margin:18px 0;box-shadow:var(--shadow-xs);transition:box-shadow .2s var(--ease)}
.intro-card:hover{box-shadow:var(--shadow-sm)}
.intro-card h3{color:var(--navy);font-size:19px;font-weight:800;margin-bottom:12px;letter-spacing:-.015em}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:40px}
.contact-card{display:block;padding:28px;border-radius:var(--radius-lg);text-decoration:none;color:#fff;transition:all .25s var(--ease);position:relative;overflow:hidden}
.contact-card::before{content:"";position:absolute;top:-50%;right:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.1),transparent 50%);opacity:0;transition:opacity .25s var(--ease)}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}
.contact-card:hover::before{opacity:1}
.contact-card > *{position:relative;z-index:1}
.contact-card.wa{background:linear-gradient(135deg,#25d366 0%,#1cb359 100%)}
.contact-card.em{background:linear-gradient(135deg,#1e3a8a 0%,#0c2461 100%)}
.contact-card .ico{font-size:32px;margin-bottom:12px}
.contact-card .lab{font-size:11px;text-transform:uppercase;letter-spacing:.1em;opacity:.9;font-weight:800;margin-bottom:6px}
.contact-card .v{font-size:22px;font-weight:800;letter-spacing:-.01em}
.contact-card .h{font-size:13px;opacity:.92;margin-top:8px}

/* === Responsive === */
@media (max-width:1024px){
  .primary-nav{gap:22px;font-size:13px}
  .hero h1{font-size:48px}
}
@media (max-width:900px){
  .hero h1{font-size:40px}
  .hero .wrap{display:block !important}
  .hero-aside{margin-top:28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .hero .stats{grid-template-columns:repeat(2,1fr);gap:16px}
  .contact-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .section-head h2{font-size:32px}
  .page-head h1{font-size:32px}
}
@media (max-width:720px){
  body{font-size:14.5px}
  .wrap{padding:0 18px}
  .site-header .wrap{flex-wrap:wrap;gap:12px}
  .primary-nav{display:none;order:99;flex-basis:100%;flex-direction:column;align-items:flex-start;gap:10px;padding:16px 0;border-top:1px solid var(--line)}
  body.nav-open .primary-nav{display:flex}
  .nav-toggle{display:flex;margin-left:auto;order:5}
  .header-cta span{display:none}
  .header-cta{padding:10px 12px;border-radius:50%;width:40px;height:40px;justify-content:center}
  .lang-btn .lang-name{display:none}
  .hero{padding:48px 0}
  .hero h1{font-size:32px}
  .hero .lead{font-size:15px}
  .hero .stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .hero .stat .v{font-size:26px}
  .section{padding:48px 0}
  .section-head h2{font-size:26px}
  .page-head{padding:32px 0 26px}
  .page-head h1{font-size:28px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  table.t{font-size:13px}
  .prod-card .body{padding:12px 14px}
  .prod-card h3{font-size:13.5px;min-height:36px}
  .cta-strip h3{font-size:22px}
}

/* === RTL === */
body.rtl{direction:rtl}
body.rtl .lang-menu{right:auto;left:0}
body.rtl .crumb,body.rtl .hero,body.rtl .section-head{text-align:right}
body.rtl .hub-card::after{left:auto;right:0}
body.rtl .hub-card .more::after{content:"←"}
body.rtl .prod-card .view::after{content:"←"}

/* === Popular searches (升级) === */
.popular-searches{padding:40px 0;background:var(--bg-soft);border-top:1px solid var(--line)}
.popular-searches .ps-head{font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);font-weight:800;margin-bottom:16px}
.ps-cloud{display:flex;flex-wrap:wrap;gap:9px}
.ps-chip{
  display:inline-block;padding:7px 14px;background:#fff;
  border:1px solid var(--line);border-radius:99px;
  font-size:12.5px;color:var(--ink-2);text-decoration:none;
  font-weight:500;transition:all .15s var(--ease)
}
.ps-chip:hover{border-color:var(--navy);color:var(--navy);background:#fff;transform:translateY(-1px);box-shadow:var(--shadow-xs)}

/* === Scroll reveal animations === */
@media (prefers-reduced-motion: no-preference){
  .hub-card, .prod-card, .why-item, .intro-card{
    animation:fadeInUp .5s var(--ease-out) backwards
  }
  .hub-card:nth-child(2){animation-delay:.05s}
  .hub-card:nth-child(3){animation-delay:.1s}
  .hub-card:nth-child(4){animation-delay:.15s}
  .hub-card:nth-child(5){animation-delay:.2s}
  .prod-card:nth-child(n+5){animation-delay:.1s}
}
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}