/* ==========================================================================
   RACOS — site stylesheet
   单文件、无框架、无外部依赖（字体除外）。改颜色改 :root 里的变量即可。
   ========================================================================== */

:root{
  --bg:#0A0B0C;
  --panel:#101214;
  --panel-2:#15181A;
  --panel-3:#1B1F22;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.18);
  --text:#E9ECEE;
  --muted:#939AA1;
  --dim:#6A7278;
  --accent:#F2552C;
  --accent-2:#FF7A52;
  --max:1240px;
  --gut:clamp(18px,4vw,44px);
  --r:14px;
  --r-sm:9px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Inter",ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
hr{border:0;border-top:1px solid var(--line);margin:0}

::selection{background:var(--accent);color:#fff}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.wrap{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gut)}

.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:8px;top:8px}

/* ---------- type ---------- */

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{
  content:"";width:22px;height:1px;background:var(--accent);flex:none;
}

.h1{
  font-size:clamp(2.15rem,5.4vw,4.15rem);
  line-height:1.02;
  letter-spacing:-.035em;
  font-weight:700;
  text-wrap:balance;
}
.h1 em{font-style:normal;color:var(--accent)}

.h2{
  font-size:clamp(1.65rem,3.1vw,2.6rem);
  line-height:1.1;
  letter-spacing:-.028em;
  font-weight:650;
  text-wrap:balance;
}

.h3{font-size:1.06rem;line-height:1.35;letter-spacing:-.012em;font-weight:600}

.lead{
  font-size:clamp(1rem,1.35vw,1.12rem);
  line-height:1.68;
  color:var(--muted);
  text-wrap:pretty;
}
.small{font-size:.875rem;line-height:1.6;color:var(--dim)}

/* ---------- buttons ---------- */

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 22px;
  border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:.94rem;font-weight:600;letter-spacing:-.005em;
  cursor:pointer;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn svg{width:16px;height:16px;flex:none}

.btn--primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn--primary:hover{background:var(--accent-2);border-color:var(--accent-2)}

.btn--ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn--ghost:hover{background:rgba(255,255,255,.05);border-color:var(--muted)}

.btn--wa{background:#19A65B;color:#fff;border-color:#19A65B}
.btn--wa:hover{background:#1DBF69;border-color:#1DBF69}

/* ---------- header ---------- */

.header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.header.is-stuck{
  border-bottom-color:var(--line);
  background:rgba(8,9,10,.93);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
}

.header__bar{
  display:flex;align-items:center;gap:clamp(14px,2.5vw,34px);
  height:74px;
}

.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo__mark{width:30px;height:30px;flex:none}
.logo__word{
  font-size:1.06rem;font-weight:800;letter-spacing:.16em;
  text-transform:uppercase;line-height:1;
}

.nav{display:flex;align-items:center;gap:clamp(12px,1.9vw,26px);margin-left:auto}
.nav a{
  font-size:.9rem;font-weight:500;color:var(--muted);
  padding:6px 0;position:relative;
  transition:color .2s var(--ease);
}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;
  background:var(--accent);transition:right .28s var(--ease);
}
.nav a:hover{color:var(--text)}
.nav a:hover::after{right:0}

.header__actions{display:flex;align-items:center;gap:10px;flex:none}

/* language switcher */
.lang{position:relative}
.lang>summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:7px;
  height:38px;padding:0 12px;
  border:1px solid var(--line-2);border-radius:8px;
  font-size:.82rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.lang>summary::-webkit-details-marker{display:none}
.lang>summary:hover{border-color:var(--muted);background:rgba(255,255,255,.04)}
.lang>summary svg{width:9px;height:9px;opacity:.6;transition:transform .2s var(--ease)}
.lang[open]>summary svg{transform:rotate(180deg)}

.lang__menu{
  position:absolute;right:0;top:calc(100% + 8px);
  min-width:186px;padding:6px;
  background:#14171A;border:1px solid var(--line-2);border-radius:10px;
  box-shadow:0 18px 46px rgba(0,0,0,.55);
  z-index:90;
}
.lang__menu a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 11px;border-radius:6px;
  font-size:.88rem;color:var(--muted);
}
.lang__menu a:hover{background:rgba(255,255,255,.06);color:var(--text)}
.lang__menu a[aria-current="true"]{color:var(--text);background:rgba(242,85,44,.12)}
.lang__menu a span{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;color:var(--dim)}
.lang__menu a[aria-current="true"] span{color:var(--accent)}

.burger{
  display:none;width:40px;height:38px;
  border:1px solid var(--line-2);border-radius:8px;background:transparent;
  align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:16px;height:1.5px;background:var(--text);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--text);
}
.burger span::before{top:-5px}
.burger span::after{top:5px}

/* ---------- hero : full-bleed cinematic ---------- */

.hero{
  position:relative;
  isolation:isolate;
  display:flex;
  flex-direction:column;
  min-height:clamp(600px,86vh,920px);
  overflow:hidden;
  background:#07080A;
}

/* 背景图 */
.hero__media{position:absolute;inset:0;z-index:0;overflow:hidden}
.hero__media img{
  width:100%;height:100%;
  object-fit:cover;
  object-position:64% 46%;
}

/* 压暗 / 渐变遮罩：左边深以便放文案 */
.hero__veil{
  position:absolute;inset:0;z-index:1;
  background:
    linear-gradient(90deg,rgba(6,7,8,.96) 0%,rgba(6,7,8,.9) 30%,rgba(6,7,8,.56) 58%,rgba(6,7,8,.5) 100%),
    linear-gradient(180deg,rgba(6,7,8,.86) 0%,rgba(6,7,8,.12) 20%,rgba(6,7,8,.04) 52%,rgba(6,7,8,.9) 100%);
}
.hero__veil::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(820px 460px at 14% 82%,rgba(242,85,44,.14),transparent 68%);
}

.hero__inner{
  position:relative;z-index:2;
  flex:1;
  display:flex;align-items:center;
  padding-top:calc(74px + clamp(30px,6vh,74px));
  padding-bottom:clamp(18px,3.4vh,42px);
}

.hero__copy{max-width:45rem}
.hero .eyebrow{margin-bottom:24px;color:#B9C0C6}
.hero .h1{
  font-size:clamp(2.45rem,5.9vw,4.6rem);
  margin-bottom:26px;
}
/* 西语文案更长，字号略收，避免把数据条顶出首屏 */
html[lang="es"] .hero .h1{font-size:clamp(2.15rem,4.9vw,3.95rem)}
html[lang="es"] .hero .lead{font-size:1rem}
.hero .lead{
  margin-bottom:34px;
  max-width:37rem;
  color:#C4CAD0;
  font-size:clamp(1rem,1.3vw,1.14rem);
}

.hero__cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero__note{
  display:flex;align-items:center;gap:8px;
  margin-top:24px;font-size:.8rem;color:#8D949B;
}
.hero__note svg{width:14px;height:14px;color:var(--accent);flex:none}

/* 首屏内的三个参数小标 */
.hero__specs{
  display:flex;flex-wrap:wrap;
  margin-top:34px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.15);
  max-width:34rem;
}
.hero__specs li{
  padding-right:clamp(18px,2.4vw,30px);
  margin-right:clamp(18px,2.4vw,30px);
  border-right:1px solid rgba(255,255,255,.13);
}
.hero__specs li:last-child{border-right:0;margin-right:0;padding-right:0}
.hero__specs span{
  display:block;font-family:var(--mono);font-size:.6rem;letter-spacing:.14em;
  text-transform:uppercase;color:#818990;
}
.hero__specs b{display:block;font-size:.84rem;font-weight:600;margin-top:5px;color:#E9ECEE}

/* 首屏底部数据条 */
.hero__stats-wrap{position:relative;z-index:2;padding-bottom:clamp(14px,2.6vh,30px)}
.hero .stats{
  border-top:1px solid rgba(255,255,255,.16);
  border-bottom:0;
  background:linear-gradient(180deg,rgba(7,8,10,0) 0%,rgba(7,8,10,.42) 100%);
}
.hero .stats div{
  padding:18px clamp(10px,1.4vw,20px) 16px 0;
  border-right:1px solid rgba(255,255,255,.13);
}
.hero .stats div:last-child{border-right:0;padding-right:0}
.hero .stats b{font-size:clamp(1.5rem,2.6vw,2.2rem)}
.hero .stats span{color:#8A9298}

.hero__grid{display:none}

/* technical drawing panel */
.dwg{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:
    linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,0)),
    var(--panel);
  padding:18px;
  overflow:hidden;
}
.dwg__top{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.dwg__tag{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--dim);
}
.dwg__tag b{color:var(--accent);font-weight:600}
.dwg__dots{display:flex;gap:5px}
.dwg__dots i{width:5px;height:5px;border-radius:50%;background:var(--line-2)}
.dwg__body{
  display:grid;place-items:center;
  padding:14px 6px 6px;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:26px 26px;
  border-radius:var(--r-sm);
}
.dwg svg{width:100%;height:auto}
.dwg__foot{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  margin-top:14px;border-top:1px solid var(--line);padding-top:14px;
}
.dwg__foot div{padding-right:10px}
.dwg__foot span{display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.08em;color:var(--dim);text-transform:uppercase}
.dwg__foot b{display:block;font-size:.8rem;font-weight:600;margin-top:3px;letter-spacing:-.01em}

/* ---------- stat strip ---------- */

.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.stats div{
  padding:26px clamp(8px,1.4vw,18px) 26px 0;
  border-right:1px solid var(--line);
}
.stats div:last-child{border-right:0;padding-right:0}
.stats b{
  display:block;font-size:clamp(1.5rem,2.6vw,2.15rem);
  font-weight:700;letter-spacing:-.04em;line-height:1;
}
.stats b i{font-style:normal;color:var(--accent);font-size:.62em;margin-left:2px}
.stats span{display:block;margin-top:9px;font-size:.78rem;color:var(--dim);letter-spacing:.02em}

/* ---------- sections ---------- */

.section{padding-block:clamp(66px,8.2vw,120px)}
.section--tight{padding-block:clamp(52px,6vw,86px)}
.section--panel{background:linear-gradient(180deg,var(--panel-2),var(--bg))}

.sec-head{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.78fr);
  gap:clamp(18px,4vw,64px);align-items:end;
  margin-bottom:clamp(34px,4.4vw,58px);
}
.sec-head .eyebrow{margin-bottom:16px}
.sec-head .lead{max-width:32rem;justify-self:end}

/* ---------- product cards ---------- */

.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(14px,1.6vw,22px);
}

.card{
  position:relative;
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  border-radius:var(--r);
  background:var(--panel);
  overflow:hidden;
  transition:border-color .28s var(--ease),transform .28s var(--ease),background .28s var(--ease);
}
.card:hover{border-color:var(--line-2);transform:translateY(-3px);background:var(--panel-2)}

/* image slot / placeholder */
.ph{
  position:relative;
  aspect-ratio:4/3;
  background:#0E1113;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.ph::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:22px 22px;
}
.ph::after{
  content:"";position:absolute;inset:14px;
  border:1px dashed rgba(255,255,255,.13);
  border-radius:6px;
}
.ph__hint{
  position:absolute;inset:0;z-index:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:9px;text-align:center;padding:20px;
}
.ph__hint svg{width:26px;height:26px;color:rgba(242,85,44,.65)}
.ph__hint b{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.11em;
  text-transform:uppercase;color:var(--dim);font-weight:500;
}
.ph__hint code{
  font-family:var(--mono);font-size:.72rem;color:var(--muted);
  background:rgba(255,255,255,.05);padding:3px 7px;border-radius:4px;
}
.ph img{
  position:absolute;inset:0;z-index:2;
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s var(--ease);
}
.card:hover .ph img{transform:scale(1.035)}

.card__body{padding:clamp(16px,1.5vw,22px);display:flex;flex-direction:column;flex:1}
.card__no{
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;
  color:var(--accent);margin-bottom:8px;
}
.card__body p{font-size:.875rem;line-height:1.6;color:var(--muted);margin-top:8px}

.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:16px}
.tags li{
  font-size:.7rem;letter-spacing:.04em;
  padding:4px 9px;border:1px solid var(--line-2);border-radius:100px;
  color:var(--dim);white-space:nowrap;
}

.cards__note{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:clamp(22px,2.6vw,34px);
  padding-top:clamp(22px,2.6vw,30px);border-top:1px solid var(--line);
  font-size:.86rem;color:var(--dim);
}
.cards__note a{color:var(--text);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-2)}
.cards__note a:hover{text-decoration-color:var(--accent);color:var(--accent)}

/* ---------- capabilities ---------- */

.caps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line)}
.cap{
  background:var(--bg);padding:clamp(20px,2.2vw,30px) clamp(16px,2vw,26px);
  display:flex;flex-direction:column;gap:12px;
}
.section--panel .cap{background:var(--panel-2)}
.cap__ico{
  width:34px;height:34px;border-radius:8px;
  display:grid;place-items:center;
  border:1px solid var(--line-2);color:var(--accent);
}
.cap__ico svg{width:17px;height:17px}
.cap p{font-size:.85rem;line-height:1.6;color:var(--muted)}
.cap__idx{font-family:var(--mono);font-size:.66rem;color:var(--dim);letter-spacing:.1em;margin-top:auto;padding-top:6px}

/* ---------- spec table ---------- */

.specs{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,78px);align-items:start}
.spec-table{border-top:1px solid var(--line)}
.spec-table dl{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1fr);gap:0 20px;margin:0}
.spec-table dt,.spec-table dd{
  margin:0;padding:13px 0;border-bottom:1px solid var(--line);
  font-size:.875rem;line-height:1.55;
}
.spec-table dt{color:var(--dim);letter-spacing:.01em}
.spec-table dd{color:var(--text);font-weight:500}
.spec-table dd small{display:block;font-weight:400;color:var(--dim);font-size:.78rem;margin-top:2px}

.spec-aside{
  position:sticky;top:96px;
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);padding:clamp(20px,2.4vw,30px);
}
.spec-aside h3{margin-bottom:10px}
.spec-aside p{font-size:.875rem;color:var(--muted);line-height:1.65}
.spec-aside .btn{margin-top:20px;width:100%}

/* ---------- oem ---------- */

.oem{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);
  gap:clamp(26px,4.5vw,70px);align-items:center;
  border:1px solid var(--line);border-radius:var(--r);
  background:
    radial-gradient(680px 300px at 92% 0%,rgba(242,85,44,.11),transparent 66%),
    var(--panel);
  padding:clamp(24px,4vw,52px);
}
.oem-list{display:grid;gap:1px;background:var(--line);border-radius:var(--r-sm);overflow:hidden}
.oem-list li{
  background:var(--panel-2);padding:15px 18px;
  display:flex;gap:13px;align-items:flex-start;
}
.oem-list svg{width:15px;height:15px;color:var(--accent);flex:none;margin-top:3px}
.oem-list b{display:block;font-size:.9rem;font-weight:600;letter-spacing:-.005em}
.oem-list span{display:block;font-size:.82rem;color:var(--muted);margin-top:2px;line-height:1.5}

/* ---------- about ---------- */

.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,76px)}
.about p+p{margin-top:16px}
.about__facts{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;align-content:start;align-self:start}
.about__facts div{background:var(--bg);padding:18px 20px;display:flex;align-items:baseline;justify-content:space-between;gap:14px}
.section--panel .about__facts div{background:var(--panel-2)}
.about__facts b{font-size:.9rem;font-weight:600}
.about__facts span{font-family:var(--mono);font-size:.76rem;color:var(--dim);text-align:right}

/* ---------- contact ---------- */

.contact{
  display:grid;grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);
  gap:clamp(28px,4.6vw,66px);align-items:start;
}

.contact__direct{display:grid;gap:12px;margin-top:28px}
.direct-item{
  display:flex;align-items:center;gap:14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;background:var(--panel);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.direct-item:hover{border-color:var(--line-2);background:var(--panel-2)}
.direct-item svg{width:17px;height:17px;color:var(--accent);flex:none}
.direct-item span{display:block;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.direct-item b{display:block;font-size:.9rem;font-weight:500;letter-spacing:-.005em;word-break:break-all}

.form{
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);padding:clamp(20px,2.8vw,34px);
}
.form__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:.74rem;letter-spacing:.09em;text-transform:uppercase;color:var(--dim)}
.field label i{font-style:normal;color:var(--accent);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;padding:12px 13px;
  background:#0C0E10;color:var(--text);
  border:1px solid var(--line-2);border-radius:8px;
  font-family:inherit;font-size:.9rem;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:104px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:#0F1113;
}
.field input::placeholder,.field textarea::placeholder{color:#5A6167}
.form .btn{margin-top:16px;width:100%}
.form__note{margin-top:12px;font-size:.76rem;color:var(--dim);line-height:1.55}
.form__status{margin-top:14px;font-size:.85rem;padding:12px 14px;border-radius:8px;display:none}
.form__status.is-ok{display:block;background:rgba(25,166,91,.12);border:1px solid rgba(25,166,91,.4);color:#6EDBA3}
.form__status.is-err{display:block;background:rgba(242,85,44,.1);border:1px solid rgba(242,85,44,.4);color:#FF9C82}

/* ---------- footer ---------- */

.footer{border-top:1px solid var(--line);background:#08090A;padding-block:clamp(40px,5vw,64px)}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(24px,4vw,60px)}
.footer__brand p{margin-top:14px;font-size:.84rem;color:var(--dim);max-width:24rem;line-height:1.65}
.footer h4{font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--dim);font-weight:600;margin-bottom:14px}
.footer li+li{margin-top:9px}
.footer li a,.footer li span{font-size:.86rem;color:var(--muted);word-break:break-all}
.footer li a:hover{color:var(--text)}
.footer__bottom{
  margin-top:clamp(28px,4vw,46px);padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.78rem;color:var(--dim);
}
.footer__bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer__bottom a:hover{color:var(--muted)}

/* ---------- reveal ---------- */

.reveal{opacity:0;transform:translateY(16px)}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .7s var(--ease),transform .7s var(--ease);
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ---------- product catalog (dark, white product tiles) ---------- */

.catalog{background:linear-gradient(180deg,#0A0B0C 0%,#090A0B 100%)}
.catalog__head{margin-bottom:clamp(24px,3.2vw,38px)}

.tabs{
  display:flex;gap:7px;flex-wrap:wrap;
  padding-bottom:clamp(18px,2.4vw,26px);
  border-bottom:1px solid var(--line);
  margin-bottom:clamp(20px,2.8vw,34px);
}
.tab{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 13px;
  border:1px solid rgba(255,255,255,.14);border-radius:100px;
  background:transparent;color:var(--muted);
  font-size:.82rem;font-weight:500;letter-spacing:-.005em;
  cursor:pointer;white-space:nowrap;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.tab em{
  font-style:normal;font-family:var(--mono);font-size:.64rem;
  color:var(--dim);padding:1px 6px;border-radius:100px;background:rgba(255,255,255,.07);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.tab:hover{border-color:rgba(255,255,255,.3);color:var(--text)}
.tab.is-active{background:#fff;border-color:#fff;color:#0A0B0C}
.tab.is-active em{background:rgba(10,11,12,.09);color:#0A0B0C}

.panel[hidden]{display:none}
.panel.is-active{animation:fadeUp .38s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.pgrid{
  display:grid;
  grid-template-columns:repeat(var(--cols,4),minmax(0,1fr));
  gap:clamp(10px,1.5vw,24px) clamp(10px,1.7vw,26px);
}
.pgrid.is-swapping{opacity:0}

.pcard__link{display:flex;flex-direction:column;height:100%}
.pcard__media{
  display:block;position:relative;
  aspect-ratio:1/1;overflow:hidden;
  background:#fff;border-radius:10px;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.pcard__ph{
  position:absolute;inset:0;z-index:0;
  display:grid;place-items:center;
  font-family:var(--mono);font-size:.82rem;letter-spacing:.12em;
  color:#E2E6E8;background:#fff;
}
.pcard__media img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:contain;background:#fff;
  transition:transform .55s var(--ease);
}
.pcard:hover .pcard__media{box-shadow:0 0 0 1px rgba(255,255,255,.45)}
.pcard:hover .pcard__media img{transform:scale(1.045)}

.pcard__meta{
  display:flex;align-items:baseline;justify-content:flex-start;
  gap:9px;padding:11px 2px 0;flex-wrap:wrap;
}
.pcard__ref{font-family:var(--mono);font-size:.74rem;letter-spacing:.03em;color:var(--text);font-weight:500}

.pcard__cta{
  display:block;padding:5px 2px 0;
  font-size:.72rem;color:var(--dim);
  opacity:0;transform:translateY(-2px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),color .22s var(--ease);
}
.pcard:hover .pcard__cta{opacity:1;transform:none;color:var(--accent)}

.catalog__foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(18px,3vw,48px);flex-wrap:wrap;
  margin-top:clamp(30px,4vw,50px);padding-top:clamp(22px,3vw,32px);
  border-top:1px solid var(--line);
}
.catalog__note{font-size:.84rem;color:var(--muted);max-width:42rem;line-height:1.6}
.catalog__meta{
  margin-top:7px;font-family:var(--mono);font-size:.66rem;
  letter-spacing:.09em;text-transform:uppercase;color:var(--dim);
}
.btn--dark{background:#fff;color:#0A0B0C;border-color:#fff}
.btn--dark:hover{background:#E4E8EA;border-color:#E4E8EA}

/* ---------- custom / OEM ---------- */

.custom{background:linear-gradient(180deg,#08090A,#0B0D0F)}

.paths{display:grid;grid-template-columns:1fr 1fr;gap:clamp(12px,1.6vw,20px)}
.path{
  display:flex;flex-direction:column;
  border:1px solid var(--line);border-radius:var(--r);
  background:var(--panel);
  padding:clamp(22px,2.6vw,34px);
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.path:hover{border-color:var(--line-2);background:var(--panel-2)}
.path__no{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;
  color:var(--accent);margin-bottom:14px;
}
.path h3{margin-bottom:10px}
.path p{font-size:.9rem;line-height:1.68;color:var(--muted)}
.path .tags{margin-top:auto;padding-top:22px}

.flow{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r);
  margin-top:clamp(12px,1.8vw,20px);overflow:hidden;
}
.flow__step{
  display:flex;flex-direction:column;gap:8px;
  background:var(--bg);padding:clamp(18px,2.2vw,26px);
}
.flow__no{font-family:var(--mono);font-size:.66rem;letter-spacing:.12em;color:var(--accent)}
.flow__step b{font-size:.94rem;font-weight:600;letter-spacing:-.01em}
.flow__step span:last-child{font-size:.82rem;line-height:1.55;color:var(--muted)}

.custom__foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(16px,3vw,40px);flex-wrap:wrap;
  margin-top:clamp(24px,3vw,36px);
}
.custom__foot p{font-size:.85rem;color:var(--dim);max-width:38rem;line-height:1.6}

/* ---------- 404 ---------- */

.err{padding-top:calc(74px + clamp(60px,9vw,130px));padding-bottom:clamp(80px,12vw,160px);text-align:center}
.err code{font-family:var(--mono);color:var(--accent);font-size:.9rem;letter-spacing:.1em}

/* ---------- responsive ---------- */

@media (max-width:1080px){
  .hero__grid{grid-template-columns:1fr;gap:44px}
  .hero__copy{max-width:none}
  .dwg{max-width:520px}
  .sec-head{grid-template-columns:1fr;align-items:start}
  .sec-head .lead{justify-self:start}
  .cards{grid-template-columns:repeat(2,1fr)}
  .caps{grid-template-columns:repeat(2,1fr)}
  .specs{grid-template-columns:1fr}
  .spec-aside{position:static}
  .oem{grid-template-columns:1fr}
  .about{grid-template-columns:1fr}
  .contact{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}

@media (max-width:860px){
  .nav,.header__actions .btn{display:none}
  .burger{display:flex}
  .header__actions{margin-left:auto}
  .header__bar{height:64px}
  .hero{min-height:auto}
  .hero__inner{padding-top:calc(64px + 52px);padding-bottom:24px}
  .hero__media img{object-position:70% 50%}
  .hero__veil{
    background:linear-gradient(180deg,rgba(6,7,8,.9) 0%,rgba(6,7,8,.52) 34%,rgba(6,7,8,.84) 74%,rgba(6,7,8,.96) 100%);
  }
  .hero__specs{margin-top:28px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats div:nth-child(2){border-right:0}
  .stats div:nth-child(1),.stats div:nth-child(2){border-bottom:1px solid var(--line)}
  .stats div:nth-child(3){padding-top:22px}
  .stats div:nth-child(4){padding-top:22px}
}

@media (max-width:620px){
  .cards{grid-template-columns:1fr}
  .caps{grid-template-columns:1fr}
  .form__grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .hero__cta .btn{flex:1 1 100%}
  .dwg__foot{grid-template-columns:1fr;gap:12px}
  .dwg__foot div{border-bottom:1px solid var(--line);padding-bottom:12px}
  .dwg__foot div:last-child{border-bottom:0;padding-bottom:0}
}

/* ---------- mobile menu ---------- */

.mobile-menu{
  position:fixed;inset:64px 0 0;z-index:79;
  background:rgba(8,9,10,.98);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  padding:26px var(--gut) 40px;
  display:none;flex-direction:column;gap:2px;
  overflow-y:auto;
}
.mobile-menu.is-open{display:flex}
.mobile-menu a{
  padding:15px 2px;border-bottom:1px solid var(--line);
  font-size:1.05rem;font-weight:500;display:flex;justify-content:space-between;align-items:center;
}
.mobile-menu a span{font-family:var(--mono);font-size:.7rem;color:var(--dim)}
.mobile-menu .btn{margin-top:22px}
.mobile-menu__langs{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.mobile-menu__langs a{
  border:1px solid var(--line-2);border-radius:100px;padding:7px 14px;
  font-size:.8rem;border-bottom:1px solid var(--line-2);
}
.mobile-menu__langs a[aria-current="true"]{border-color:var(--accent);color:var(--accent)}

/* ---------- catalog / custom responsive ---------- */

@media (max-width:1080px){
  .pgrid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:860px){
  .paths{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .catalog__foot{flex-direction:column;align-items:flex-start}
  .catalog__foot .btn{width:100%}
}

@media (max-width:720px){
  .pgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tabs{
    flex-wrap:nowrap;overflow-x:auto;
    margin-inline:calc(var(--gut) * -1);
    padding-inline:var(--gut);
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .tabs::-webkit-scrollbar{display:none}
  .tab{flex:none}
  .pcard__cta{display:none}
}

@media (max-width:520px){
  .flow{grid-template-columns:1fr}
  .custom__foot .btn{width:100%}
}