/* CONGAN — catenary components. Single stylesheet, no external fonts or CDN. */

:root{
  --ink:#0A0D0F;
  --ink-2:#121A1E;
  --ink-3:#1A2428;
  --steel:#7C878E;
  --steel-2:#A9B4BA;
  --paper:#F3F4F3;
  --paper-2:#E7E9E8;
  --card:#EDEFEE;
  --line-d:rgba(255,255,255,.13);
  --line-l:rgba(10,13,15,.14);
  --signal:#EFB01E;
  --signal-soft:#FFD166;
  --ok:#3E9E6A;
  --display:"Bahnschrift","Segoe UI Variable Display","Segoe UI Semibold","Microsoft YaHei UI",system-ui,sans-serif;
  --body:"Segoe UI","Microsoft YaHei UI","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"Consolas","Cascadia Mono","Courier New",monospace;
  --r:3px;
  --maxw:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--ink);color:#E8ECEE;font-family:var(--body);
  font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--display);font-weight:600;letter-spacing:-.015em;line-height:1.1}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:28px}
.eyebrow{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--signal);display:flex;align-items:center;gap:.6rem;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--signal);display:inline-block}

/* ---------- header ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--signal);color:var(--ink);padding:.7rem 1rem;z-index:99}
.skip:focus{left:12px;top:12px}

.header{
  position:sticky;top:0;z-index:40;background:rgba(10,13,15,.88);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line-d);
}
.header__in{display:flex;align-items:center;gap:32px;height:70px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  width:30px;height:30px;border:1.5px solid var(--signal);position:relative;flex:0 0 auto;
}
.brand__mark::before,.brand__mark::after{
  content:"";position:absolute;background:var(--signal);
}
.brand__mark::before{left:6px;right:6px;top:9px;height:1.5px}
.brand__mark::after{left:6px;right:6px;top:18px;height:1.5px}
.brand__name{font-family:var(--display);font-size:1.06rem;letter-spacing:.20em;line-height:1}
.brand__sub{font-family:var(--mono);font-size:.6rem;letter-spacing:.26em;color:var(--steel);margin-top:5px;text-transform:uppercase}

.nav{margin-left:auto;display:flex;align-items:center;gap:26px}
.nav a{font-size:.86rem;letter-spacing:.02em;color:#C9D1D5;position:relative;padding:6px 0}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--signal);
  transition:right .22s ease;
}
.nav a:hover::after,.nav a[aria-current="page"]::after{right:0}
.nav a[aria-current="page"]{color:#fff}

.header__tools{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.lang{display:flex;border:1px solid var(--line-d);border-radius:2px;overflow:hidden}
.lang button{
  background:transparent;border:0;padding:6px 10px;font-family:var(--mono);font-size:.68rem;
  letter-spacing:.12em;color:var(--steel);cursor:pointer;
}
.lang button[aria-pressed="true"]{background:var(--signal);color:var(--ink)}
.btn{
  display:inline-flex;align-items:center;gap:.55rem;padding:12px 20px;border-radius:2px;
  font-family:var(--display);font-size:.86rem;letter-spacing:.03em;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--signal{background:var(--signal);color:#120E02}
.btn--signal:hover{background:var(--signal-soft)}
.btn--ghost{border-color:rgba(255,255,255,.28);color:#EAEFF1}
.btn--ghost:hover{border-color:var(--signal);color:var(--signal)}
.btn--dark{background:var(--ink);color:#F1F3F4}
.btn--dark:hover{background:#000}
.btn--sm{padding:9px 15px;font-size:.8rem}
.arrow{font-family:var(--mono)}

.burger{display:none;background:transparent;border:1px solid var(--line-d);width:38px;height:34px;border-radius:2px;cursor:pointer;position:relative}
.burger span{position:absolute;left:9px;right:9px;height:1.5px;background:#DCE2E5;transition:transform .2s ease,opacity .2s ease}
.burger span:nth-child(1){top:11px}
.burger span:nth-child(2){top:17px}
.burger span:nth-child(3){top:23px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line-d);
  background:
    radial-gradient(900px 520px at 82% 12%, rgba(239,176,30,.10), transparent 62%),
    radial-gradient(700px 500px at 8% 92%, rgba(124,135,142,.16), transparent 60%),
    var(--ink);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:112px 112px;
  mask-image:radial-gradient(80% 70% at 50% 30%, #000 30%, transparent 100%);
}
.hero__in{
  position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;padding-block:84px 76px;min-height:min(78vh,700px);
}
.hero h1{font-size:clamp(2.4rem,4.6vw,4rem);margin-top:22px;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--signal)}
.hero__lede{max-width:46ch;color:#B9C3C8;font-size:1.02rem;margin-top:22px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero__facts{display:flex;flex-wrap:wrap;gap:26px 40px;margin-top:46px;padding-top:26px;border-top:1px solid var(--line-d)}
.hero__facts div{min-width:120px}
.hero__facts b{display:block;font-family:var(--display);font-size:1.35rem;color:#fff;letter-spacing:-.01em}
.hero__facts span{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);font-family:var(--mono)}

.hero__figure{
  position:relative;height:clamp(280px,44vh,460px);
  display:flex;align-items:center;justify-content:center;
}
.hero__figure::before{
  content:"";position:absolute;width:78%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(closest-side, rgba(239,176,30,.16), rgba(239,176,30,.04) 55%, transparent 72%);
}
.hero__figure img{
  position:relative;max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;filter:drop-shadow(0 26px 42px rgba(0,0,0,.55));
  animation:float 9s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ---------- strips / sections ---------- */
.band{background:var(--ink-2);border-block:1px solid var(--line-d)}
.band__in{display:flex;flex-wrap:wrap;gap:14px 48px;padding-block:18px;align-items:center}
.band .band__label{font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;color:var(--steel);text-transform:uppercase}
.band ul{display:flex;flex-wrap:wrap;gap:12px 40px}
.band li{font-family:var(--display);font-size:.92rem;letter-spacing:.04em;color:#D6DDE0;display:flex;align-items:center;gap:9px}
.band li::before{content:"";width:6px;height:6px;background:var(--signal);transform:rotate(45deg)}

.section{padding-block:clamp(64px,7vw,104px)}
.section--paper{background:var(--paper);color:var(--ink)}
.section--paper .eyebrow{color:#A97A00}
.section--paper .eyebrow::before{background:#A97A00}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:18px 40px;justify-content:space-between;margin-bottom:42px}
.section__head h2{font-size:clamp(1.8rem,2.8vw,2.6rem);margin-top:16px}
.section__head p{max-width:52ch;color:var(--steel);font-size:.95rem}
.section--paper .section__head p{color:#525B60}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line-d)}
.steps article{background:var(--ink);padding:34px 30px 40px}
.steps .num{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;color:var(--signal)}
.steps h3{font-size:1.16rem;margin:16px 0 12px}
.steps p{color:#A9B4BA;font-size:.92rem}
.section--paper .steps{background:var(--line-l)}
.section--paper .steps article{background:var(--paper)}
.section--paper .steps p{color:#4E585D}
.section--paper .steps h3{color:var(--ink)}
.section--paper .steps .num{color:#A97A00}

/* catalogue grid */
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:rgba(10,13,15,.14)}
.grid--dark{background:var(--line-d)}
.tile{position:relative;background:var(--paper);padding:0;display:block;overflow:hidden}
.tile__img{aspect-ratio:4/3;background:var(--card);display:flex;align-items:center;justify-content:center;overflow:hidden}
.tile__img img{width:88%;height:88%;object-fit:contain;transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.tile:hover .tile__img img{transform:scale(1.05)}
.tile__meta{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px 14px;border-top:1px solid rgba(10,13,15,.1);background:#fff;
}
.tile__code{font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;color:#0A0D0F}
.tile__cta{font-size:.74rem;color:#6B767C;letter-spacing:.02em}
.tile:hover .tile__cta{color:#8A5E00}
.tile[hidden]{display:none}

/* product detail */
.pd{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:0;border:1px solid var(--line-d)}
.pd__media{background:#fff;display:flex;align-items:center;justify-content:center;padding:40px;min-height:420px}
.pd__media img{max-height:min(62vh,560px);width:auto;object-fit:contain}
.pd__body{padding:36px 34px 40px;background:var(--ink-2)}
.pd__body .eyebrow{margin-bottom:18px}
.pd__code{font-family:var(--display);font-size:2rem;letter-spacing:.04em;color:#fff}
.pd__sub{color:var(--steel);font-size:.88rem;margin-top:8px}
.pd__note{
  margin-top:26px;padding:16px 18px;border-left:2px solid var(--signal);
  background:rgba(239,176,30,.07);font-size:.86rem;color:#C7D1D6;
}
.spec{display:grid;grid-template-columns:auto 1fr;gap:0;margin-top:26px;border-top:1px solid var(--line-d)}
.spec dt,.spec dd{margin:0;padding:11px 0;border-bottom:1px solid var(--line-d);font-size:.86rem}
.spec dt{color:var(--steel);font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;font-size:.68rem;padding-right:24px;white-space:nowrap}
.spec dd{color:#DDE4E7}
.pd__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}

/* quality list */
.qlist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line-l)}
.qlist article{background:var(--paper);color:var(--ink);padding:30px 28px 34px}
.qlist h3{font-size:1.06rem;margin-bottom:10px;color:var(--ink)}
.qlist p{font-size:.9rem;color:#4E585D}
.qlist .tag{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;color:#A97A00;text-transform:uppercase}

/* cta band */
.cta{background:var(--signal);color:#120E02}
.cta__in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;padding-block:44px}
.cta h2{font-size:clamp(1.5rem,2.3vw,2.05rem);max-width:22ch;color:#120E02}
.cta p{font-size:.9rem;color:#3D3108;max-width:44ch;margin-top:8px}
.cta__actions{display:flex;flex-wrap:wrap;gap:10px}

/* contact form */
.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:#A9B4BA}
.field input,.field textarea,.field select{
  background:#0E1417;border:1px solid var(--line-d);border-radius:2px;padding:12px 13px;color:#E9EEF0;
  font-size:.92rem;
}
.field input::placeholder,.field textarea::placeholder{color:#66737A}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--signal);outline:none}
.field--full{grid-column:1/-1}
.form__foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.form__note{font-size:.78rem;color:#7C878E;max-width:46ch}
.form__status{grid-column:1/-1;font-size:.86rem;color:var(--signal);min-height:1.2em}

/* contact channels */
.channels{display:grid;gap:1px;background:var(--line-d)}
.channels a{display:flex;align-items:center;gap:16px;padding:22px 24px;background:var(--ink-2);transition:background .18s ease}
.channels a:hover{background:var(--ink-3)}
.channels .k{font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;color:var(--steel);text-transform:uppercase;width:92px;flex:0 0 auto}
.channels .v{font-family:var(--display);font-size:1rem;letter-spacing:.02em;color:#EEF2F4;display:flex;gap:10px;align-items:center}
.channels .v .arrow{margin-left:auto;color:var(--signal)}

/* footer */
.footer{background:#07090A;border-top:1px solid var(--line-d);padding-block:56px 32px}
.footer__in{display:grid;grid-template-columns:minmax(0,2fr) repeat(3,minmax(0,1fr));gap:40px}
.footer h4{font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;color:var(--steel);text-transform:uppercase;margin-bottom:14px;font-weight:500}
.footer p,.footer a{font-size:.86rem;color:#9FAAAF;line-height:1.85}
.footer a:hover{color:var(--signal)}
.footer__legal{margin-top:44px;padding-top:22px;border-top:1px solid var(--line-d);display:flex;flex-wrap:wrap;gap:12px 30px;justify-content:space-between;font-size:.76rem;color:#5E696E}

/* page head */
.pagehead{padding-block:56px 40px;border-bottom:1px solid var(--line-d);background:var(--ink)}
.pagehead h1{font-size:clamp(1.9rem,3.4vw,2.9rem);margin-top:16px}
.pagehead p{max-width:62ch;color:#A9B4BA;margin-top:16px;font-size:.95rem}

/* filter bar */
.filterbar{
  position:sticky;top:70px;z-index:30;background:rgba(10,13,15,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line-d);
}
.filterbar__in{display:flex;flex-wrap:wrap;align-items:center;gap:16px;padding-block:14px}
.search{
  flex:1 1 280px;display:flex;align-items:center;gap:10px;background:#111A1E;border:1px solid var(--line-d);
  border-radius:2px;padding:9px 13px;
}
.search input{flex:1;background:transparent;border:0;outline:none;font-size:.9rem;letter-spacing:.06em;font-family:var(--mono)}
.count{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;color:var(--steel);text-transform:uppercase}
.empty{padding:60px 0;text-align:center;color:var(--steel)}

/* two-column text splits */
.split{display:grid;gap:48px}
.split--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.split--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.split--7-4{grid-template-columns:minmax(0,7fr) minmax(0,4fr)}

@media (max-width:1024px){
  .split{grid-template-columns:1fr;gap:32px}
  .hero__in{grid-template-columns:1fr;gap:20px}
  .hero__figure{order:-1;height:clamp(220px,34vh,300px)}
  .grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .pd{grid-template-columns:1fr}
  .pd__media{min-height:320px}
  .footer__in{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .nav{
    position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;
    background:rgba(8,11,12,.98);padding:8px 28px 22px;border-bottom:1px solid var(--line-d);
    display:none;
  }
  .nav--open{display:flex}
  .nav a{width:100%;padding:14px 0;border-bottom:1px solid var(--line-d);font-size:.95rem}
  .burger{display:block}
  .header__in{gap:16px}
  .header__cta{display:none}
  .wrap{padding-inline:20px}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr}
  .qlist{grid-template-columns:1fr}
  .form{grid-template-columns:1fr}
  .hero__in{padding-block:44px 52px}
  .hero__facts{gap:20px 28px}
  .hero__facts b{font-size:1.15rem}
  .channels .k{width:74px}
  .footer__in{grid-template-columns:1fr}
  .cta__in{padding-block:34px}
}
@media (max-width:420px){
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero__figure{height:200px}
}
@media (max-width:540px){
  .brand__sub{display:none}
  .header__in{gap:12px}
  .header__tools{gap:10px}
  .lang button{padding:6px 8px}
  .hero__facts div{min-width:92px}
  .hero__facts{gap:16px 20px}
  .pd__body{padding:26px 20px 30px}
  .pd__media{padding:20px;min-height:260px}
  .pd__media img{max-height:44vh}
  .tile__meta{padding:10px 12px 12px}
  .tile__cta{font-size:.7rem}
  .section__head{margin-bottom:30px}
  .hero h1{font-size:2.05rem;line-height:1.16}
  .channels a{flex-direction:column;align-items:flex-start;gap:7px}
  .channels .k{width:auto}
  .channels .v{font-size:.95rem;flex-wrap:wrap;word-break:break-word}
  .channels .v .arrow{margin-left:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}
@media print{
  .header,.filterbar,.cta,.hero__figure{display:none}
  body{background:#fff;color:#000}
}