/* ============================================================
   苏州宸希汇一智能科技有限公司 · 官网样式表
   概念 B 明亮骨架 + 概念 A 深色质感
   ============================================================ */

:root{
  --ink:#0A1626; --ink2:#0E2136; --ink3:#152C45;
  --body:#4A5A6E; --mute:#8496AB;
  --line:#E3E9F0; --soft:#F5F8FC; --white:#fff;
  --brand:#1657E0; --brand2:#2E7DFF; --brand-soft:#EAF1FE;
  --accent:#FF6A1A;
  --r:14px; --r-lg:20px;
  --wrap:1200px;
  --sh:0 2px 6px rgba(10,22,38,.05), 0 14px 40px rgba(10,22,38,.07);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  color:var(--ink);background:var(--white);line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}

/* ---------- 通用文字 ---------- */
.eyebrow{
  font-size:13px;letter-spacing:.16em;font-weight:600;color:var(--brand);
  text-transform:uppercase;display:inline-flex;align-items:center;gap:9px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);display:block}
.sec{padding:100px 0}
.sec-head h2{font-size:38px;line-height:1.28;letter-spacing:-.02em;font-weight:700;margin:16px 0 14px}
.sec-head p.lead{font-size:17px;color:var(--body);max-width:740px}
.sec-head.center{text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head.center p.lead{margin:0 auto}
.dark .sec-head h2{color:#fff}
.dark .sec-head p.lead{color:#9FB3C8}
.dark .sec-head .eyebrow{color:#7FB0FF}
.dark .sec-head .eyebrow::before{background:#7FB0FF}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:10px;
  font-size:15.5px;font-weight:650;transition:.22s;border:1px solid transparent;cursor:pointer;
}
.btn svg{width:15px;height:15px;flex:0 0 auto}
.btn-p{background:var(--brand);color:#fff;box-shadow:0 10px 26px rgba(22,87,224,.36)}
.btn-p:hover{background:var(--brand2);transform:translateY(-1px)}
.btn-o{border-color:var(--line);color:var(--ink)}
.btn-o:hover{border-color:var(--brand);color:var(--brand)}
.btn-dark-o{border-color:rgba(255,255,255,.26);color:#E7EFF8}
.btn-dark-o:hover{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.06)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- 顶部提示条 ---------- */
.topbar{
  background:var(--accent);color:#fff;font-size:12.6px;text-align:center;
  padding:8px 16px;font-weight:600;letter-spacing:.02em;
}
.topbar b{background:rgba(0,0,0,.18);padding:2px 8px;border-radius:5px;margin-left:6px}

/* ---------- 导航 ---------- */
header.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(10,22,38,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
/* 导航用比正文更宽的容器：俄文菜单项很长（Автомобильный крепёж 等），
   1200px 容器装不下，右侧 CTA 会被挤出屏幕。 */
header.nav .wrap{max-width:1360px}
.nav-in{display:flex;align-items:center;gap:22px;height:76px}
.logo{display:block;flex:0 0 auto;line-height:0}
.logo img{display:block;height:27px;width:auto}
.nav-menu{display:flex;gap:20px;margin-left:auto;min-width:0}
.nav-menu a{color:#C6D4E3;font-size:13.8px;transition:.2s;white-space:nowrap}
.nav-menu a:hover{color:#fff}
.nav-menu a.on{color:#fff;font-weight:650;position:relative}
.nav-menu a.on::after{
  content:"";position:absolute;left:0;right:0;bottom:-26px;height:2px;background:var(--brand2);
}
.nav-cta{
  background:var(--brand);color:#fff;padding:9px 16px;border-radius:9px;
  font-size:13.5px;font-weight:600;transition:.2s;flex:0 0 auto;white-space:nowrap;
}
.nav-cta:hover{background:var(--brand2)}
.nav-toggle{display:none}
.nav-burger{display:none;cursor:pointer;flex-direction:column;gap:4px;width:40px;height:36px;
  border-radius:9px;border:1px solid rgba(255,255,255,.22);align-items:center;justify-content:center}
.nav-burger span{display:block;width:17px;height:2px;background:#fff;border-radius:2px;transition:.2s}

/* ---------- 语言切换（下拉） ---------- */
.lang{position:relative;margin-left:20px;flex:0 0 auto}
.lang>summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:8px;
  padding:6px 10px 6px 8px;border-radius:9px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  color:#DCE7F3;font-size:13px;font-weight:600;line-height:1;white-space:nowrap;
  transition:.2s;user-select:none;
}
.lang>summary::-webkit-details-marker{display:none}
.lang>summary::marker{content:""}
.lang>summary:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.28);color:#fff}
.lang>summary em{font-style:normal}
.lang .car{width:12px;height:12px;opacity:.7;transition:transform .22s;flex:0 0 auto}
.lang[open]>summary{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff}
.lang[open]>summary .car{transform:rotate(180deg)}
.fl{width:17px;height:17px;flex:0 0 auto;display:block;border-radius:50%}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 9px);min-width:172px;
  background:#0F2136;border:1px solid rgba(255,255,255,.15);border-radius:12px;
  padding:6px;box-shadow:0 20px 48px rgba(3,12,26,.55);z-index:70;
}
.lang-menu a{
  display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:8px;
  color:#C6D4E3;font-size:13.5px;font-weight:500;transition:.18s;white-space:nowrap;
}
.lang-menu a:hover{background:rgba(255,255,255,.1);color:#fff}

/* ---------- 首页英雄区 ---------- */
.hero{
  background:#081426 url(assets/hero-mask.webp) center right/cover no-repeat;
  color:#fff;position:relative;overflow:hidden;
}
/* 蒙板：左侧近实、向右渐透，保证文案压得住、人物从暗部浮出 */
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(96deg,
    rgba(7,17,34,.96) 0%,
    rgba(7,17,34,.92) 32%,
    rgba(7,17,34,.72) 55%,
    rgba(7,17,34,.46) 78%,
    rgba(7,17,34,.30) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.34;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 22% 34%,#000 12%,transparent 66%);
}
.hero-in{
  position:relative;z-index:2;padding:66px 0 0;
}
/* 宽度要给够：俄文 h1「Поставка и техническая поддержка」在 680px 下会折成 3 行，
   首屏就会被顶出视口。780px 能压回 2 行。 */
.hero-txt{max-width:780px}
/* 首屏公司名：放大加粗，做成正式企业名观感 */
.hero .eyebrow{
  font-size:17.5px;font-weight:700;letter-spacing:.045em;text-transform:none;
  color:#D6E5F8;
}
.hero .eyebrow::before{width:30px;height:2px;background:#4C8DFF}
.hero h1{font-size:46px;line-height:1.14;letter-spacing:-.025em;font-weight:750;margin:16px 0 16px}
.hero h1 em{font-style:normal;color:#7FB0FF}
.hero p.sub{font-size:16.5px;color:#A9BDD2;max-width:650px}
.hero-btns{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.hero-note{font-size:13px;color:#7C93AB;margin-top:13px}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}
.hero-tags span{
  font-size:12.5px;color:#B9CADC;border:1px solid rgba(255,255,255,.18);
  padding:5px 13px;border-radius:20px;background:rgba(255,255,255,.04);
}

/* ---------- 数字条 ---------- */
.stats{
  position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(255,255,255,.09);margin-top:44px;
  border-top:1px solid rgba(255,255,255,.09);
}
.stat{background:var(--ink);padding:23px 24px 25px}
.stat b{display:block;font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.2}
.stat b i{font-style:normal;font-size:17px;font-weight:600;color:#7FB0FF;margin-left:3px}
.stat span{display:block;font-size:13.5px;color:#8FA6BC;margin-top:8px}
.stat em{display:block;font-size:11.5px;color:#5F7691;font-style:normal;margin-top:5px}

/* ---------- 品牌横条 ---------- */
.trust{background:var(--ink2);padding:26px 0}
.trust-in{display:flex;align-items:center;gap:34px;flex-wrap:wrap}
.trust .lbl{font-size:13px;color:#7C93AB;letter-spacing:.06em;white-space:nowrap}
.trust .names{display:flex;gap:30px;flex-wrap:wrap;align-items:center}
.trust .names span{color:#B9CADC;font-weight:650;font-size:16px;letter-spacing:.06em;opacity:.85;transition:.2s}
.trust .names span:hover{opacity:1;color:#fff}
.trust .note{font-size:12px;color:#5F7691;margin-left:auto}

/* ---------- 内页页头 ---------- */
.phero{
  background:
    radial-gradient(760px 420px at 82% -20%, rgba(46,125,255,.26), transparent 62%),
    var(--ink);
  color:#fff;padding:64px 0 68px;position:relative;overflow:hidden;
}
.phero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(circle at 78% 30%,#000 10%,transparent 76%);
}
.phero .wrap{position:relative;z-index:2}
.crumbs{font-size:13px;color:#7C93AB;margin-bottom:20px}
.crumbs a:hover{color:#fff}
.crumbs span{margin:0 8px;opacity:.6}
.phero h1{font-size:42px;line-height:1.2;letter-spacing:-.022em;font-weight:750;margin-bottom:16px}
.phero p{font-size:17px;color:#A9BDD2;max-width:700px}
.phero .hero-btns{margin-top:30px}
.phero-tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}
.phero-tags span{
  font-size:12.5px;color:#B9CADC;border:1px solid rgba(255,255,255,.2);
  padding:5px 13px;border-radius:20px;
}

/* ---------- 双主线卡 ---------- */
.dual{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:52px}
.lane{
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;
  box-shadow:var(--sh);display:flex;flex-direction:column;transition:.28s;
}
.lane:hover{transform:translateY(-3px);box-shadow:0 4px 10px rgba(10,22,38,.06),0 26px 56px rgba(10,22,38,.11)}
.lane .pic{height:216px;overflow:hidden;background:#F7F9FC;display:grid;place-items:center;border-bottom:1px solid var(--line)}
.lane .pic img{width:100%;height:100%;object-fit:contain;padding:22px}
.lane .bd{padding:28px 30px 32px;display:flex;flex-direction:column;flex:1}
.tagline{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--brand);
  background:var(--brand-soft);padding:5px 11px;border-radius:6px;align-self:flex-start;
}
.lane h3{font-size:25px;font-weight:700;margin:16px 0 10px;letter-spacing:-.015em}
.lane p{font-size:14.8px;color:var(--body);flex:1}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 24px}
.chips li{font-size:12.5px;color:var(--body);background:var(--soft);border:1px solid var(--line);padding:5px 11px;border-radius:20px}
.go{font-size:14.5px;font-weight:650;color:var(--brand);display:inline-flex;align-items:center;gap:7px}
.go::after{content:"→";transition:.2s}
.lane:hover .go::after{transform:translateX(4px)}

/* ---------- 深色区 ---------- */
.dark{background:var(--ink);color:#fff}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.pillar{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-lg);padding:34px 30px 36px;transition:.26s;
}
.pillar:hover{background:rgba(255,255,255,.075);border-color:rgba(127,176,255,.4)}
.pillar .no{font-size:13px;font-weight:700;color:#7FB0FF;letter-spacing:.14em}
.pillar h3{font-size:21px;font-weight:700;margin:16px 0 12px;letter-spacing:-.01em}
.pillar p{font-size:14.6px;color:#9FB3C8}
.pillar .kpi{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7FB0FF;font-weight:600}

/* ---------- 应用卡片 ---------- */
.apps{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:52px}
.app{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;transition:.26s;display:block}
.app:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.app .pic{height:126px;background:#F7F9FC;display:grid;place-items:center;border-bottom:1px solid var(--line)}
.app .pic img{max-height:96px;width:auto;object-fit:contain}
.app .bd{padding:16px 16px 20px}
.app b{font-size:15px;display:block}
.app span{font-size:12.5px;color:var(--mute);display:block;margin-top:6px;line-height:1.55}

/* 应用详版（两列） */
.apps-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.apps-3 .app .pic{height:152px}
.apps-3 .app .pic img{max-height:120px}
.apps-3 .app .bd{padding:18px 20px 22px}
.apps-3 .app b{font-size:16.5px}
.apps-3 .app span{font-size:13.2px}
.apps-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:48px}
.approw{
  display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:center;
  border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;background:#fff;transition:.26s;
}
.approw:hover{box-shadow:var(--sh)}
.approw .ph{height:150px;background:#F7F9FC;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line)}
.approw .ph img{max-height:118px;width:auto;object-fit:contain}
.approw h4{font-size:18px;font-weight:700;margin-bottom:10px}
.approw dl{font-size:13.6px;color:var(--body);display:grid;grid-template-columns:72px 1fr;gap:6px 12px}
.approw dt{color:var(--mute);font-size:12.5px}
.approw dd{color:var(--body)}
.approw .go{margin-top:14px}

/* ---------- 通用栅格 / 卡片 ---------- */
.soft{background:var(--soft)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px 28px}
.card h3{font-size:19px;font-weight:700;margin-bottom:11px}
.card h4{font-size:17px;font-weight:700;margin-bottom:9px}
.card p{font-size:14.2px;color:var(--body)}
.card .ic{
  width:42px;height:42px;border-radius:11px;background:var(--brand-soft);
  display:grid;place-items:center;margin-bottom:16px;
}
.card .ic svg{width:21px;height:21px;stroke:var(--brand);fill:none;stroke-width:1.7}
.card .num{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.14em;margin-bottom:14px}

/* 品牌卡 */
.brand{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 24px}
.brand b{font-size:21px;font-weight:750;letter-spacing:.03em;display:block}
.brand span{font-size:13px;color:var(--mute);display:block;margin-top:8px;line-height:1.6}

/* ---------- 双栏图文 ---------- */
.qgrid{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center;margin-top:48px}
.qlist{list-style:none}
.qlist li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line)}
.qlist li:first-child{border-top:1px solid var(--line)}
.qlist .n{font-size:13px;font-weight:700;color:var(--brand);padding-top:3px;min-width:26px}
.qlist b{font-size:16px;display:block;margin-bottom:5px}
.qlist span{font-size:13.8px;color:var(--body)}
.qphoto{border-radius:var(--r-lg);overflow:hidden;background:#F7F9FC;border:1px solid var(--line);padding:26px}
.qphoto img{width:100%;object-fit:contain;max-height:340px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:52px;position:relative}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 22px;position:relative}
.step .n{
  width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13.5px;font-weight:700;margin-bottom:16px;
}
.step h4{font-size:16px;margin-bottom:8px}
.step p{font-size:13.4px;color:var(--body)}
.step .dur{display:block;margin-top:10px;font-size:12.2px;color:var(--brand);font-weight:600}

/* ---------- 键值表 ---------- */
.kvtable{width:100%;border-collapse:collapse;margin-top:40px;font-size:14.2px}
.kvtable th,.kvtable td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);vertical-align:top;overflow-wrap:break-word}
.kvtable th{background:var(--soft);font-size:13px;color:var(--body);font-weight:650;letter-spacing:.03em}
.kvtable tr:hover td{background:#FAFCFF}
.kvtable td:first-child{font-weight:600;color:var(--ink)}
.kvtable td{color:var(--body)}
.dark .kvtable th{background:rgba(255,255,255,.05);color:#9FB3C8}
.dark .kvtable td{border-color:rgba(255,255,255,.1);color:#9FB3C8}
.dark .kvtable td:first-child{color:#fff}
.dark .kvtable tr:hover td{background:rgba(255,255,255,.04)}

/* ---------- 提示块 ---------- */
.notice{
  margin-top:30px;background:#FFF8F1;border:1px solid #FFDCC2;border-left:3px solid var(--accent);
  border-radius:10px;padding:18px 22px;font-size:13.6px;color:#8A5326;line-height:1.75;
}
.notice b{color:#B85C0E}
.notice.blue{background:#F2F7FF;border-color:#CFE0FB;border-left-color:var(--brand);color:#2C5488}
.notice.blue b{color:var(--brand)}

/* ---------- 钩子 ---------- */
.hooks{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:52px}
.hook{
  border:1px solid rgba(255,255,255,.12);border-radius:var(--r-lg);padding:30px 26px 32px;
  background:rgba(255,255,255,.04);display:flex;flex-direction:column;transition:.26s;
}
.hook:hover{background:rgba(255,255,255,.08);border-color:rgba(127,176,255,.45);transform:translateY(-3px)}
.hook .no{font-size:12px;font-weight:700;letter-spacing:.14em;color:#7FB0FF}
.hook h4{font-size:18px;margin:14px 0 10px;color:#fff}
.hook p{font-size:13.6px;color:#9FB3C8;flex:1}
.hook a{margin-top:18px;font-size:14px;font-weight:650;color:#7FB0FF}

/* 浅色钩子 */
.hooks-light .hook{background:#fff;border-color:var(--line)}
.hooks-light .hook:hover{background:#fff;border-color:var(--brand2);box-shadow:var(--sh)}
.hooks-light .hook .no{color:var(--brand)}
.hooks-light .hook h4{color:var(--ink)}
.hooks-light .hook p{color:var(--body)}
.hooks-light .hook a{color:var(--brand)}

/* ---------- CTA 条 ---------- */
.cta-band{background:linear-gradient(120deg,var(--brand),#0B47C4);color:#fff;padding:64px 0}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h3{font-size:30px;font-weight:750;letter-spacing:-.02em;line-height:1.3}
.cta-band p{font-size:15.5px;color:rgba(255,255,255,.82);margin-top:10px;max-width:560px}
.cta-band .btn{background:#fff;color:var(--brand)}
.cta-band .btn:hover{background:#F2F6FF}

/* ---------- 联系 ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-top:48px}
.cinfo{display:flex;flex-direction:column;gap:22px}
.ci{display:flex;gap:16px}
.ci .ic{width:40px;height:40px;flex:0 0 auto;border-radius:10px;background:var(--brand-soft);display:grid;place-items:center}
.ci .ic svg{width:19px;height:19px;stroke:var(--brand);fill:none;stroke-width:1.7}
.ci b{font-size:14.5px;display:block}
.ci span{font-size:13.8px;color:var(--body)}
.cform{background:var(--soft);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px}
.cform .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.cform label{font-size:12.5px;color:var(--body);font-weight:600;display:block;margin-bottom:7px}
.cform .f{margin-bottom:16px}
.cform input,.cform select,.cform textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;
  font-size:14px;font-family:inherit;background:#fff;color:var(--ink);
}
.cform input:focus,.cform select:focus,.cform textarea:focus{
  outline:none;border-color:var(--brand2);box-shadow:0 0 0 3px rgba(46,125,255,.13);
}
.cform .send{width:100%;justify-content:center;margin-top:6px}
.qrbox{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:14px;width:198px;align-self:flex-start;
  display:grid;place-items:center;box-shadow:var(--sh);
}
.qrbox img{width:170px;height:170px;display:block}

/* 表单：附件上传 */
.cform .hint{font-weight:500;color:var(--mute);font-size:11.8px;letter-spacing:0}
/* 注意：必须用 .cform .dropzone，才能压过 .cform label 的 display:block */
.cform .dropzone{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1.5px dashed #C6D4E6;border-radius:11px;background:#fff;
  padding:20px 16px;text-align:center;cursor:pointer;transition:.2s;
  margin-bottom:0;font-weight:400;
}
.cform .dropzone:hover,.cform .dropzone.drag{border-color:var(--brand2);background:#F7FAFF}
.cform .dropzone svg{width:23px;height:23px;stroke:var(--brand);fill:none;stroke-width:1.7;margin-bottom:3px}
.cform .dropzone b{display:block;font-size:13.8px;color:var(--ink);font-weight:650}
.cform .dropzone small{display:block;font-size:11.8px;color:var(--mute);line-height:1.65;font-weight:400;margin-top:2px}
.filelist{list-style:none;margin-top:10px;display:flex;flex-direction:column;gap:6px}
.filelist li{
  display:flex;align-items:center;gap:9px;font-size:12.6px;color:var(--body);
  background:#fff;border:1px solid var(--line);border-radius:8px;padding:7px 11px;
}
.filelist li span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.filelist li b{color:var(--mute);font-weight:500;flex:0 0 auto;font-size:11.8px}
.filelist li i{cursor:pointer;color:var(--mute);font-style:normal;font-size:16px;line-height:1;padding:0 3px}
.filelist li i:hover{color:#D9534F}
.form-msg{display:none;margin-top:14px;font-size:13.4px;line-height:1.7;border-radius:9px}
.form-msg.ok,.form-msg.err{display:block;padding:12px 15px}
.form-msg.ok{background:#EDF8F0;border:1px solid #BFE6CB;color:#1F7A3D}
.form-msg.err{background:#FEF1F1;border:1px solid #F7CDCD;color:#B33A3A}
button[disabled]{opacity:.62;cursor:not-allowed}

/* ---------- 页脚 ---------- */
footer{background:var(--ink);color:#8FA6BC;padding:60px 0 34px;font-size:13.4px}
.foot-top{display:grid;grid-template-columns:1.5fr .9fr .95fr .9fr 1fr;gap:34px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-top h5{color:#fff;font-size:14px;margin-bottom:16px;font-weight:650}
.foot-top a{display:block;margin-bottom:10px;color:#8FA6BC;transition:.2s}
.foot-top a:hover{color:#fff}
.foot-brand .logo{margin-bottom:16px}
.foot-brand p{line-height:1.8;max-width:330px}
.foot-bot{display:flex;justify-content:space-between;gap:20px;padding-top:24px;flex-wrap:wrap;font-size:12.6px;color:#5F7691}
.foot-bot .lic{line-height:1.9}
.foot-bot a{color:#8FA6BC;transition:.2s}
.foot-bot a:hover{color:#fff;text-decoration:underline}
.ci a{color:var(--body);transition:.2s}
.ci a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
/* 网格子项允许收缩，避免不可断行内容（规格区间等）撑破视口 */
.hero-in>*,.stats>*,.dual>*,.grid2>*,.grid3>*,.grid4>*,.hooks>*,.steps>*,.apps>*,
.pillars>*,.qgrid>*,.contact>*,.approw>*,.foot-top>*,.phero-tags>*,.apps-3>*{min-width:0}
body{overflow-x:hidden}

@media (max-width:1080px){
  .apps{grid-template-columns:repeat(3,1fr)}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .hooks{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
}
/* ------------------------------------------------------------------
   导航折叠：必须在 1280 就折起来，不能等到 900。
   原因：俄文菜单项极长（Автомобильный крепёж / Технологии и качество…），
   加上语言下拉与 CTA，1136px 容器根本放不下，右侧按钮会被挤出屏幕。
   实测：1440px 视口下俄文溢出 204px、英文 25px。
   注意：只把「导航相关」规则放这里，正文排版仍走 900px 断点。
   ------------------------------------------------------------------ */
@media (max-width:1280px){
  .nav-menu{
    display:none;position:absolute;left:0;right:0;top:76px;margin-left:0;
    flex-direction:column;gap:0;
    background:rgba(10,22,38,.985);border-top:1px solid rgba(255,255,255,.08);
    padding:6px 20px 16px;box-shadow:0 22px 44px rgba(3,12,26,.45);
  }
  .nav-toggle:checked ~ .nav-menu{display:flex}
  .nav-menu a{padding:14px 2px;font-size:15.5px;border-bottom:1px solid rgba(255,255,255,.07)}
  .nav-menu a:last-child{border-bottom:0}
  .nav-menu a.on::after{display:none}
  .nav-menu a.on{color:#7FB0FF}
  .nav-cta{margin-left:auto;order:2}
  .nav-burger{display:flex;order:3;margin-left:12px}
  header.nav .wrap{max-width:var(--wrap)}
}
@media (max-width:900px){
  .wrap{padding:0 20px}
  .hero-in{padding-top:64px}
  .hero{background-position:78% 22%}
  .hero::before{
    background:linear-gradient(170deg,
      rgba(7,17,34,.93) 0%,
      rgba(7,17,34,.86) 46%,
      rgba(7,17,34,.72) 100%);
  }
  .lang{margin-left:0}
  .lang>summary{padding:5px 9px 5px 7px;font-size:12.5px;gap:7px}
  .nav-in{gap:14px}
  .hero h1{font-size:37px}
  .phero h1{font-size:31px}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:52px}
  .dual,.pillars,.qgrid,.contact,.grid2,.grid3,.apps-2{grid-template-columns:1fr}
  .sec{padding:72px 0}
  .sec-head h2{font-size:29px}
  .apps{grid-template-columns:repeat(2,1fr)}
  .apps-3{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr 1fr}
  .cta-band h3{font-size:23px}
  .approw{grid-template-columns:1fr}
}
@media (max-width:560px){
  .apps,.apps-3,.grid4,.hooks,.foot-top,.steps{grid-template-columns:1fr}
  .cform .row{grid-template-columns:1fr}
  /* 窄屏导航要挤下 4 件东西：logo / 语言 / CTA / 汉堡。
     EN 的 "Submit Drawings"、RU 的 "Отправить чертёж" 都比中文长，
     所以这里尺寸给得比较紧，改前务必用 390px 视口回归一次。 */
  .logo img{height:20px}
  .nav-in{gap:9px}
  .nav-cta{padding:8px 10px;font-size:11.8px;white-space:nowrap}
  .lang>summary{padding:5px 7px;font-size:11.5px;gap:5px}
  .lang>summary em{display:none}
  .lang .car{width:10px;height:10px}
  .fl{width:15px;height:15px}
  .hero h1{font-size:30px}
  .hero p.sub{font-size:16px}
  .stats{grid-template-columns:1fr 1fr;margin-top:40px}
  .stat{padding:22px 16px 24px}
  .stat b{font-size:25px}
  .stat b i{font-size:14px}
  .hero-tags span{font-size:12px;padding:4px 11px}
  .trust-in{gap:16px}
  .trust .note{margin-left:0}
  .kvtable{font-size:13px}
  .kvtable th,.kvtable td{padding:12px 10px}
  .kvtable th:first-child{width:auto !important}
  .btn{padding:13px 20px;font-size:15px}
  .hero-btns .btn,.hero-btns{width:100%}
  .hero-btns .btn{justify-content:center}
}