@font-face{font-family:'Plex';src:url('../fonts/plex-400.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Plex';src:url('../fonts/plex-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Plex';src:url('../fonts/plex-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Plex';src:url('../fonts/plex-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}

:root{
  --ink:#141A2B;
  --ink-2:#1E2740;
  --paper:#F4F6F9;
  --white:#FFFFFF;
  --steel:#5C6885;
  --steel-2:#7B86A0;
  --line:#D5DAE4;
  --line-2:#E6EAF1;
  --signal:#1F4FD8;
  --signal-d:#173BA3;
  --brass:#C08A2E;
  --wrap:1120px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:'Plex',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:17px;line-height:1.62;font-weight:400;
  -webkit-font-smoothing:antialiased;font-variant-numeric:tabular-nums;
}
html[lang^="zh"] body{
  font-family:'Plex','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC','Source Han Sans SC',sans-serif;
  line-height:1.78;
}
img,svg{max-width:100%;height:auto}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-0.016em;line-height:1.2}
h1{font-size:clamp(31px,4.6vw,47px);font-weight:700;letter-spacing:-0.026em;line-height:1.1}
h2{font-size:clamp(24px,3vw,31px)}
h3{font-size:20px;letter-spacing:-0.008em}
h4{font-size:16px;font-weight:600;letter-spacing:0}
p{margin:0 0 15px}
p:last-child{margin-bottom:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 26px}
.mw{max-width:68ch}
.lead{font-size:19px;color:var(--steel);line-height:1.6}

/* ── header ───────────────────────────────────────────── */
.hd{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.hd-in{display:flex;align-items:center;gap:22px;min-height:66px}
.brand{display:flex;align-items:baseline;gap:9px;color:var(--ink);font-weight:700;letter-spacing:-0.02em;font-size:19px;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand em{font-style:normal;font-weight:500;color:var(--steel);font-size:14px;letter-spacing:0.01em}
.nav{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav a{color:var(--ink);font-size:15px;font-weight:500}
.nav a[aria-current="page"]{color:var(--signal)}
.lang{display:flex;align-items:center;gap:7px;font-size:14px;padding-left:20px;border-left:1px solid var(--line)}
.lang a{color:var(--steel);font-weight:500}
.lang .on{color:var(--ink);font-weight:600}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:2px;padding:7px 12px;font:inherit;font-size:14px;font-weight:500;color:var(--ink);cursor:pointer}

/* ── hero ─────────────────────────────────────────────── */
.hero{background:var(--white);border-bottom:1px solid var(--line);padding:66px 0 60px}
.hero-in{display:grid;grid-template-columns:1.06fr 0.94fr;gap:56px;align-items:center}
.hero h1{margin-bottom:20px;max-width:15ch}
.hero .lead{max-width:52ch}
.kicker{font-size:14px;font-weight:600;color:var(--signal);margin-bottom:16px;letter-spacing:0.005em}
.row{display:flex;flex-wrap:wrap;gap:11px;margin-top:26px}

.btn{display:inline-block;padding:11px 20px;border-radius:2px;font-size:15px;font-weight:600;border:1px solid transparent}
.btn:hover{text-decoration:none}
.btn-a{background:var(--signal);color:#fff}
.btn-a:hover{background:var(--signal-d)}
.btn-b{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-b:hover{border-color:var(--steel)}
.btn-c{background:#fff;color:var(--ink)}
.btn-c:hover{background:var(--paper)}

/* ── sections ─────────────────────────────────────────── */
.sec{padding:58px 0;border-bottom:1px solid var(--line-2)}
.sec-w{background:var(--white);border-bottom:1px solid var(--line)}
.sec-d{background:var(--ink);color:#fff;border-bottom:none}
.sec-d h2,.sec-d h3{color:#fff}
.sec-d .lead{color:#AEB8CE}
.sec-d a{color:#93B0FF}
.sec-h{margin-bottom:26px}
.sec-h h2{margin-bottom:11px}

/* ── definition rows: the capability list ─────────────── */
.defs{border-top:1px solid var(--line);margin-top:8px}
.def{display:grid;grid-template-columns:230px 1fr;gap:36px;padding:22px 0;border-bottom:1px solid var(--line)}
.def h3{padding-top:1px}
.def p{color:var(--steel);max-width:64ch}
.def .zh-sub{display:block;font-size:14px;font-weight:500;color:var(--steel-2);margin-top:3px;letter-spacing:0}
.sec-d .defs,.sec-d .def{border-color:#2C3651}
.sec-d .def p{color:#AEB8CE}

/* ── the problem block ────────────────────────────────── */
.gate{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:22px}
.gate div{background:var(--white);padding:22px 20px}
.gate h4{margin-bottom:8px}
.gate p{font-size:15px;color:var(--steel);margin:0}

/* ── spec table ───────────────────────────────────────── */
.tbl-w{overflow-x:auto;margin-top:20px;border:1px solid var(--line);background:var(--white)}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:15px}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--line-2);vertical-align:top}
thead th{background:var(--paper);font-weight:600;font-size:14px;border-bottom:1px solid var(--line);white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
td.n{color:var(--steel);white-space:nowrap}

/* ── process timeline (a real sequence) ───────────────── */
.flow{margin-top:26px;counter-reset:st}
.step{display:grid;grid-template-columns:56px 1fr;gap:24px;padding-bottom:30px;position:relative}
.step::before{
  counter-increment:st;content:counter(st,decimal-leading-zero);
  grid-column:1;font-size:15px;font-weight:600;color:var(--signal);
  padding-top:2px;
}
.step::after{content:"";position:absolute;left:11px;top:26px;bottom:0;width:1px;background:var(--line)}
.step:last-child{padding-bottom:0}
.step:last-child::after{display:none}
.step-b h3{margin-bottom:7px}
.step-b p{color:var(--steel);max-width:62ch}
.step-t{font-size:14px;font-weight:500;color:var(--brass);margin-top:7px}

/* ── notes / callouts ─────────────────────────────────── */
.note{border-left:3px solid var(--brass);background:var(--white);padding:18px 22px;margin-top:22px}
.note p{font-size:16px;color:var(--steel)}
.note strong{color:var(--ink)}
.sec-d .note{background:var(--ink-2);border-left-color:var(--brass)}
.sec-d .note p{color:#C3CBDD}
.sec-d .note strong{color:#fff}

ul.tick{list-style:none;padding:0;margin:14px 0 0}
ul.tick li{padding:8px 0 8px 22px;border-bottom:1px solid var(--line-2);position:relative;color:var(--steel);font-size:16px}
ul.tick li::before{content:"";position:absolute;left:2px;top:17px;width:7px;height:7px;border:1px solid var(--signal);border-radius:50%}
ul.tick li:last-child{border-bottom:none}
ul.tick strong{color:var(--ink);font-weight:600}

/* ── contact grid ─────────────────────────────────────── */
.two{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.card{background:var(--white);border:1px solid var(--line);padding:26px}
.card h3{margin-bottom:12px}
dl.meta{margin:0;font-size:15px}
dl.meta div{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:9px 0;border-bottom:1px solid var(--line-2)}
dl.meta div:last-child{border-bottom:none}
dl.meta dt{color:var(--steel)}
dl.meta dd{margin:0;font-weight:500}

/* ── footer ───────────────────────────────────────────── */
.ft{background:var(--ink);color:#95A0BA;padding:44px 0 34px;font-size:14.5px}
.ft a{color:#C3CBDD}
.ft-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:38px}
.ft h4{color:#fff;margin-bottom:12px;font-size:14px}
.ft ul{list-style:none;padding:0;margin:0}
.ft li{padding:4px 0}
.ft-b{border-top:1px solid #2C3651;margin-top:32px;padding-top:20px;display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13.5px;color:#77839E}

/* ── hero drawing ─────────────────────────────────────── */
.dwg{width:100%;height:auto;display:block}
.dwg .ln{fill:none;stroke:var(--steel);stroke-width:1.2}
.dwg .ln-f{fill:var(--paper);stroke:var(--steel);stroke-width:1.2}
.dwg .die{fill:var(--ink);stroke:none}
.dwg .wire{fill:none;stroke:var(--brass);stroke-width:1.6;stroke-linecap:round}
.dwg .mold{fill:none;stroke:var(--steel-2);stroke-width:1.1;stroke-dasharray:4 3}
.dwg .gd{fill:none;stroke:var(--line);stroke-width:1}
.dwg .lb{fill:var(--steel);font-size:11.5px;font-weight:500}
.dwg .lb-b{fill:var(--brass);font-size:11.5px;font-weight:600}

@media (max-width:900px){
  .hero-in{grid-template-columns:1fr;gap:38px}
  .two{grid-template-columns:1fr;gap:28px}
  .ft-in{grid-template-columns:1fr 1fr;gap:26px}
  .gate{grid-template-columns:1fr}
  .def{grid-template-columns:1fr;gap:8px}
}
@media (max-width:760px){
  body{font-size:16px}
  .burger{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--white);border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:0;padding:8px 26px 16px;margin:0}
  .nav.open{display:flex}
  .nav a{padding:11px 0;width:100%;border-bottom:1px solid var(--line-2)}

  /* Переключатель языка: отдельная строка, ссылки по содержимому.
     Без этого .nav a растягивает обе на 100 %, они сжимаются
     и «中文» ломается на два этажа. */
  .nav .lang{display:flex;align-items:stretch;gap:0;width:100%;
    border-left:none;padding:12px 0 0;margin-top:4px;border-top:1px solid var(--line)}
  .nav .lang a{width:auto;flex:0 0 auto;padding:7px 16px;border-bottom:none;
    border-right:1px solid var(--line);white-space:nowrap;line-height:1.2}
  .nav .lang a:first-child{padding-left:0}
  .nav .lang a:last-child{border-right:none}

  .hd-in{position:relative}
  .hero{padding:44px 0 40px}
  .sec{padding:42px 0}
  dl.meta div{grid-template-columns:1fr;gap:2px}

  /* Таблица корпусов: на узком экране раскладывается карточками.
     Горизонтальная прокрутка здесь не годится — уезжает первый
     столбец, а именно он называет строку. */
  .tbl-w{overflow:visible;border:none;background:none}
  table{display:block;width:100%;min-width:0;font-size:15px}
  thead{display:none}
  tbody{display:block}
  tbody tr{display:block;background:var(--white);border:1px solid var(--line);margin-bottom:10px}
  tbody tr:last-child{margin-bottom:0}
  tbody td{display:flex;justify-content:space-between;align-items:baseline;gap:18px;
    padding:9px 15px;border-bottom:1px solid var(--line-2);text-align:right}
  tbody td::before{content:attr(data-l);color:var(--steel);font-weight:500;
    text-align:left;flex:0 0 auto;white-space:nowrap}
  tbody td:first-child{display:block;text-align:left;font-weight:600;color:var(--ink);
    background:var(--paper);padding:11px 15px}
  tbody td:first-child::before{content:none}
  tbody td:last-child{border-bottom:none}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media print{.hd,.ft,.row{display:none}body{background:#fff}}