/* ============================================================
   LUYA TECH — shared page styles
   Used by: about, quality, rfq, privacy, terms
   ============================================================ */

:root{
  --ink:#0B1116;
  --ink-80:#1A242C;
  --ink-60:#4A5763;
  --ink-40:#7A8792;
  --ink-25:#A9B3BC;
  --line:#E4E2DE;
  --line-soft:#EFEDE9;
  --paper:#FFFFFF;
  --paper-2:#FAF9F7;
  --paper-3:#F2F0EC;
  --copper:#9C6B33;
  --copper-lt:#C89B62;
  --dark:#0B1116;
  --dark-2:#121A21;
  --max:1240px;
  --gut:32px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Helvetica Neue",Helvetica,Arial,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--paper);color:var(--ink-60);
  font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"kern" 1,"liga" 1,"calt" 1;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
svg{display:block}
img{max-width:100%;height:auto}
::selection{background:var(--ink);color:#fff}
h1,h2,h3,h4,h5{color:var(--ink);font-weight:500;letter-spacing:-0.028em;line-height:1.12}
strong{color:var(--ink-80);font-weight:600}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.narrow{max-width:820px}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- type ---------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink-40);margin-bottom:26px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--copper);flex:none}
.eyebrow.on-dark{color:rgba(255,255,255,.5)}
.sec-title{font-size:clamp(27px,3.4vw,41px);letter-spacing:-0.034em;line-height:1.1}
.lede{font-size:17.5px;line-height:1.72;color:var(--ink-60);max-width:660px;margin-top:24px}
.body p{font-size:15.6px;line-height:1.78;margin-bottom:19px}
.body p:last-child{margin-bottom:0}
.body h3{font-size:19px;margin:38px 0 12px}
.body h3:first-child{margin-top:0}
.body ul,.body ol{margin:0 0 19px 20px}
.body li{font-size:15.6px;line-height:1.75;margin-bottom:9px}
.body a{color:var(--copper);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.body a:hover{color:var(--ink)}

/* ---------- nav ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
header.solid{
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom-color:var(--line);
}
header.inverted:not(.solid) .brand-name,
header.inverted:not(.solid) .nav-link{color:#fff}
header.inverted:not(.solid) .brand-sub{color:rgba(255,255,255,.45)}
header.inverted:not(.solid) .brand-mark circle,
header.inverted:not(.solid) .brand-mark path{stroke:#fff !important}
header.inverted:not(.solid) .btn-ink{background:#fff;color:var(--ink);border-color:#fff}
header.inverted:not(.solid) .menu-btn svg{stroke:#fff}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:28px;height:28px;flex:none}
.brand-mark circle,.brand-mark path{transition:stroke .3s}
.brand-name{display:block;font-size:15px;font-weight:600;letter-spacing:.1em;color:var(--ink);line-height:1.1;transition:color .3s}
.brand-sub{display:block;font-size:9.5px;font-weight:500;letter-spacing:.2em;color:var(--ink-40);text-transform:uppercase;margin-top:4px;transition:color .3s}
.nav-right{display:flex;align-items:center;gap:34px}
.nav-link{font-size:14px;font-weight:450;color:var(--ink-80);position:relative;transition:color .25s;letter-spacing:-0.005em}
.nav-link::after{content:"";position:absolute;left:0;bottom:-6px;height:1px;width:0;background:currentColor;transition:width .3s var(--ease)}
.nav-link:hover::after{width:100%}
.nav-link[aria-current="page"]::after{width:100%}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;font-size:13.5px;font-weight:550;letter-spacing:.01em;
  border:1px solid transparent;transition:all .25s var(--ease);cursor:pointer;
  white-space:nowrap;font-family:inherit;
}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ink:hover{background:var(--copper);border-color:var(--copper)}
.btn-line{border-color:rgba(255,255,255,.26);color:#fff}
.btn-line:hover{border-color:#fff;background:rgba(255,255,255,.07)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn svg{transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.menu-btn{display:none;background:none;border:none;cursor:pointer;padding:6px}

/* ---------- page hero ---------- */
.phero{
  background:var(--dark);color:#fff;position:relative;overflow:hidden;
  padding:calc(78px + 76px) 0 78px;
}
.phero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 420px at 78% 8%, rgba(156,107,51,.16), transparent 62%),
    radial-gradient(620px 380px at 6% 92%, rgba(90,120,140,.13), transparent 64%);
}
.phero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.045;
  background:repeating-linear-gradient(98deg,#fff 0 1px,transparent 1px 9px);
}
.phero .wrap{position:relative;z-index:2}
.phero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:64px;align-items:end}
.phero h1{color:#fff;font-size:clamp(33px,4.4vw,56px);letter-spacing:-0.04em;line-height:1.04;font-weight:480}
.phero h1 em{font-style:normal;color:var(--copper-lt)}
.phero p{margin-top:24px;font-size:16.5px;line-height:1.72;color:rgba(255,255,255,.62);max-width:620px}
.phero-meta{display:grid;gap:18px;border-left:1px solid rgba(255,255,255,.14);padding-left:30px}
.phero-meta div span{display:block;font-size:10px;letter-spacing:.17em;text-transform:uppercase;color:rgba(255,255,255,.35);margin-bottom:5px}
.phero-meta div strong{display:block;font-size:14.5px;color:#fff;font-weight:500;letter-spacing:-.01em}
.crumb{display:flex;gap:9px;align-items:center;font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:rgba(255,255,255,.34);margin-bottom:30px}
.crumb a{color:rgba(255,255,255,.5)}
.crumb a:hover{color:#fff}

/* ---------- sections ---------- */
.sec{padding:96px 0}
.sec.tight{padding:74px 0}
.sec.alt{background:var(--paper-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec.dark{background:var(--dark);color:rgba(255,255,255,.6)}
.sec.dark h2,.sec.dark h3{color:#fff}
.sec.dark .lede{color:rgba(255,255,255,.6)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;margin-bottom:56px}
.sec-head .side{font-size:14px;line-height:1.7;max-width:330px;color:var(--ink-40)}

/* ---------- grids ---------- */
.g2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.split{display:grid;grid-template-columns:.92fr 1.08fr;gap:72px;align-items:center}

/* ---------- cards ---------- */
.card{
  border:1px solid var(--line);padding:34px 30px;background:#fff;
  transition:border-color .3s var(--ease),transform .35s var(--ease),box-shadow .35s var(--ease);
}
.card:hover{border-color:var(--ink-25);transform:translateY(-3px);box-shadow:0 18px 40px -28px rgba(11,17,22,.5)}
.card .num{font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--copper);margin-bottom:20px;display:block}
.card h3{font-size:18.5px;margin-bottom:12px;letter-spacing:-.02em}
.card p{font-size:14.6px;line-height:1.72}
.card ul{list-style:none;margin-top:16px;display:grid;gap:9px}
.card ul li{font-size:13.8px;line-height:1.6;padding-left:16px;position:relative;color:var(--ink-60)}
.card ul li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border:1px solid var(--copper)}

/* ---------- stats ---------- */
.stats{border-top:1px solid var(--ink);border-bottom:1px solid var(--line);padding:40px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stats div{padding:0 28px;border-left:1px solid var(--line)}
.stats div:first-child{border-left:none;padding-left:0}
.stats b{display:block;font-size:clamp(24px,2.8vw,34px);color:var(--ink);font-weight:500;letter-spacing:-.04em;line-height:1}
.stats b i{font-style:normal;font-size:.55em;color:var(--copper);margin-left:3px}
.stats span{display:block;font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-40);margin-top:10px}

/* ---------- table ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:600px}
th,td{text-align:left;padding:15px 20px;border-bottom:1px solid var(--line-soft)}
th{
  font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-40);
  font-weight:600;background:var(--paper-2);border-bottom:1px solid var(--line);white-space:nowrap;
}
td{color:var(--ink-60);vertical-align:top}
td strong{color:var(--ink);font-weight:550}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover td{background:var(--paper-2)}
.table-note{font-size:12.5px;color:var(--ink-40);margin-top:14px;line-height:1.65}

/* ---------- definition rows ---------- */
.kv{border-top:1px solid var(--line)}
.kv > div{display:grid;grid-template-columns:220px 1fr;gap:28px;padding:19px 0;border-bottom:1px solid var(--line-soft)}
.kv dt,.kv > div > span{font-size:12px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-40)}
.kv dd,.kv > div > div{font-size:15px;color:var(--ink-80);line-height:1.7}

/* ---------- timeline ---------- */
.steps{counter-reset:s;border-top:1px solid var(--ink)}
.step{
  counter-increment:s;display:grid;grid-template-columns:60px 1.05fr 1.4fr;
  gap:36px;padding:30px 0;border-bottom:1px solid var(--line);align-items:start;
}
.step::before{
  content:counter(s,decimal-leading-zero);font-size:12px;font-weight:600;
  color:var(--copper);letter-spacing:.1em;padding-top:4px;
}
.step h3{font-size:16.5px;letter-spacing:-.015em;margin-bottom:6px}
.step .sm{font-size:12.5px;color:var(--ink-40);letter-spacing:.02em}
.step p{font-size:14.4px;line-height:1.72}
.step .out{font-size:12.5px;color:var(--ink-40);margin-top:10px;padding-top:10px;border-top:1px dotted var(--line);line-height:1.6}

/* ---------- callout ---------- */
.note{
  border-left:2px solid var(--copper);background:var(--paper-2);
  padding:22px 26px;font-size:14.2px;line-height:1.75;color:var(--ink-60);
}
.note strong{color:var(--ink)}
.quote{border-left:2px solid var(--line);padding-left:28px;font-size:19px;line-height:1.62;color:var(--ink-80);letter-spacing:-.015em}
.quote cite{display:block;font-style:normal;font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-40);margin-top:18px}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#fff;padding:84px 0;position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(680px 340px at 80% 30%, rgba(156,107,51,.18), transparent 62%);
}
.cta-band .wrap{position:relative;display:flex;justify-content:space-between;align-items:center;gap:56px}
.cta-band h2{color:#fff;font-size:clamp(25px,3vw,36px);letter-spacing:-.035em;line-height:1.14;max-width:640px}
.cta-band p{color:rgba(255,255,255,.56);font-size:15px;margin-top:16px;max-width:520px;line-height:1.7}
.cta-actions{display:flex;gap:12px;flex:none}

/* ---------- forms ---------- */
.form-card{border:1px solid var(--line);background:#fff;padding:40px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}
.frow.one{grid-template-columns:1fr}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-40);font-weight:600}
.field label .req{color:var(--copper)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:14.5px;color:var(--ink);
  background:#fff;border:1px solid var(--line);padding:12px 14px;
  transition:border-color .2s,box-shadow .2s;width:100%;border-radius:0;
}
.field textarea{resize:vertical;min-height:110px;line-height:1.65}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(11,17,22,.06);
}
.field .hint{font-size:11.5px;color:var(--ink-40);letter-spacing:0}
.form-foot{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line-soft)}
.form-foot p{font-size:12.4px;color:var(--ink-40);max-width:400px;line-height:1.6}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-60);margin-top:18px;line-height:1.6}
.check input{width:15px;height:15px;margin-top:3px;flex:none;accent-color:var(--ink)}
.form-msg{display:none;margin-top:18px;padding:14px 16px;background:var(--paper-3);border-left:2px solid var(--copper);font-size:13.5px;line-height:1.65;color:var(--ink-80)}
.form-msg.show{display:block}

/* ---------- misc ---------- */
.pill{display:inline-flex;align-items:center;gap:7px;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-40);border:1px solid var(--line);padding:5px 11px;margin:0 6px 6px 0}
.pill.ok{border-color:rgba(156,107,51,.35);color:var(--copper)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:550;color:var(--ink);border-bottom:1px solid var(--ink);padding-bottom:3px}
.link-arrow:hover{color:var(--copper);border-color:var(--copper)}

/* ---------- footer ---------- */
footer{background:#060A0E;color:rgba(255,255,255,.42);padding:72px 0 34px;font-size:13px}
.foot-top{display:grid;grid-template-columns:1.6fr .8fr .8fr .9fr;gap:44px;padding-bottom:52px;border-bottom:1px solid rgba(255,255,255,.09)}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(255,255,255,.36)}
.foot-brand p{max-width:300px;line-height:1.72;font-size:12.8px;margin-top:22px;color:rgba(255,255,255,.4)}
.fc h5{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:18px}
.fc ul{list-style:none;display:grid;gap:11px}
.fc a,.fc li{font-size:12.8px;color:rgba(255,255,255,.42);transition:color .2s}
.fc a:hover{color:#fff}
.foot-bot{display:flex;justify-content:space-between;align-items:center;padding-top:26px;font-size:11.8px;color:rgba(255,255,255,.3);flex-wrap:wrap;gap:14px}
.foot-bot .legal{display:flex;gap:26px}
.foot-bot .legal a:hover{color:#fff}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.07s}
.rv.d2{transition-delay:.14s}
.rv.d3{transition-delay:.21s}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .phero-grid{grid-template-columns:1fr;gap:44px}
  .phero-meta{border-left:none;border-top:1px solid rgba(255,255,255,.14);padding-left:0;padding-top:26px;grid-template-columns:repeat(2,1fr)}
  .split,.g2{gap:44px}
  .g4{grid-template-columns:repeat(2,1fr)}
  .step{grid-template-columns:44px 1fr;gap:20px}
  .step > div:last-child{grid-column:2}
}
@media(max-width:860px){
  :root{--gut:22px}
  .nav-right .nav-link{display:none}
  .nav-right{gap:14px}
  .menu-btn{display:block}
  .sec{padding:68px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:22px;margin-bottom:38px}
  .g2,.split,.g3{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:26px 0}
  .stats div:nth-child(3){border-left:none;padding-left:0}
  .frow{grid-template-columns:1fr}
  .form-card{padding:26px 22px}
  .cta-band .wrap{flex-direction:column;align-items:flex-start;gap:32px}
  .kv > div{grid-template-columns:1fr;gap:6px}
  .foot-top{grid-template-columns:1fr;gap:36px}
  .phero{padding-top:calc(78px + 52px)}
  .body p,.body li{font-size:15.2px}
}

/* ---------- mobile panel ---------- */
.mobile-panel{
  position:fixed;top:78px;left:0;right:0;z-index:99;background:#fff;
  border-bottom:1px solid var(--line);padding:10px 22px 26px;display:none;
  box-shadow:0 30px 50px -34px rgba(11,17,22,.45);
}
.mobile-panel.open{display:block}
.mobile-panel a{display:block;padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:15px;color:var(--ink-80)}
.mobile-panel a:last-child{border-bottom:none}
.mobile-panel a.btn{margin-top:16px;border-bottom:none;padding:14px 24px}

/* ---------- RFQ page ---------- */
.rfq-grid{display:grid;grid-template-columns:1.5fr .9fr;gap:56px;align-items:start}
.fs{border:none;margin:0 0 34px}
.fs legend{
  display:flex;align-items:center;gap:14px;width:100%;
  font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--copper);font-weight:600;margin-bottom:20px;
}
.fs legend::after{content:"";flex:1;height:1px;background:var(--line)}
.preset{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.preset button{
  font-family:inherit;font-size:12.5px;padding:9px 14px;border:1px solid var(--line);
  background:#fff;cursor:pointer;color:var(--ink-80);transition:all .2s var(--ease);text-align:left;
}
.preset button:hover{border-color:var(--ink);background:var(--paper-2)}
.preset button b{font-weight:600;color:var(--ink)}
.aside-card{border:1px solid var(--line);padding:32px 28px;background:var(--paper-2);position:sticky;top:100px}
.aside-card + .aside-card{margin-top:20px}
.aside-card h3{font-size:15px;margin-bottom:18px;letter-spacing:-.015em}
.aside-card ol{list-style:none;counter-reset:q;display:grid;gap:17px}
.aside-card ol li{counter-increment:q;font-size:13.3px;line-height:1.65;padding-left:30px;position:relative;color:var(--ink-60)}
.aside-card ol li::before{content:counter(q,decimal-leading-zero);position:absolute;left:0;top:2px;font-size:10px;letter-spacing:.08em;color:var(--copper);font-weight:600}
.aside-card ol li strong{display:block;color:var(--ink);font-size:13.4px;margin-bottom:3px}
.aside-card .direct{font-size:13.4px;line-height:1.8}
.aside-card .direct a{color:var(--copper);border-bottom:1px solid rgba(156,107,51,.3)}
.aside-card .direct span{display:block;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-40);margin-bottom:3px;margin-top:16px}
.aside-card .direct span:first-child{margin-top:0}
@media(max-width:1080px){
  .rfq-grid{grid-template-columns:1fr;gap:36px}
  .aside-card{position:static}
}
@media(max-width:860px){
  .nav-right .btn{display:none}
  .mobile-panel a.btn{display:inline-flex}
}