/* =============================================
   SPRINGWELL PARTS — site stylesheet
   ============================================= */

:root{
  --ink:#101418;
  --steel:#1d252d;
  --muted:#5d6b78;
  --line:#e3e7ea;
  --line-strong:#cfd6dc;
  --bg:#ffffff;
  --bg-soft:#f6f7f8;
  --bg-deep:#101418;
  --accent:#c2410c;
  --accent-dark:#9a3207;
  --accent-soft:#fdf1ea;
  --radius:4px;
  --max:1140px;
  --font:"Inter","Segoe UI","Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.18;font-weight:650;letter-spacing:-.015em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.center{text-align:center}

/* ---------- top bar ---------- */
.topbar{
  background:var(--bg-deep);
  color:#c9d2da;
  font-size:12.5px;
  letter-spacing:.02em;
}
.topbar .wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:38px;
}
.topbar .tb-left{display:flex;gap:18px;align-items:center;min-width:0}
.topbar a{color:#e8eef3}
.topbar a:hover{color:#fff}
.topbar .dot{width:3px;height:3px;border-radius:50%;background:#4d5a66}
.topbar .tb-right{white-space:nowrap}
@media(max-width:820px){.topbar .tb-left span.hide-s{display:none}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}

.brand{display:flex;align-items:center;gap:11px}
.brand .mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:3px;background:var(--bg-deep);
  display:grid;place-items:center;
}
.brand .mark svg{width:20px;height:20px}
.brand .word{display:flex;flex-direction:column;line-height:1}
.brand .word b{font-size:16.5px;letter-spacing:.10em;font-weight:700}
.brand .word span{font-size:9.5px;letter-spacing:.30em;color:var(--muted);margin-top:4px}

.nav{display:flex;align-items:center;gap:6px}
.nav a{
  font-size:14px;color:#33404c;padding:9px 12px;border-radius:3px;
  font-weight:500;white-space:nowrap;
}
.nav a:hover{background:var(--bg-soft);color:var(--ink)}
.nav a.active{color:var(--ink);font-weight:600}
.nav a.active::after{
  content:"";display:block;height:2px;background:var(--accent);
  margin-top:6px;border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:10px}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);
  background:#fff;border-radius:3px;cursor:pointer;padding:0;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto;border-radius:2px}
@media(max-width:980px){
  .nav{
    display:none;position:absolute;top:70px;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:2px;
  }
  .nav.open{display:flex}
  .nav a{padding:12px 8px;border-bottom:1px solid var(--line)}
  .nav a.active::after{display:none}
  .burger{display:block}
  .header-cta .btn{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:3px;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;transition:.16s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink);background:#fff}
.btn-ghost:hover{border-color:var(--ink);background:var(--bg-soft)}
.btn-dark{background:var(--bg-deep);color:#fff}
.btn-dark:hover{background:#000}
.btn-sm{height:38px;padding:0 16px;font-size:13px}

/* ---------- hero ---------- */
.hero{
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,#fbfbfc 0%,#ffffff 100%);
  padding:76px 0 68px;
  position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  mask-image:radial-gradient(ellipse at 78% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 78% 30%,#000 0%,transparent 72%);
  pointer-events:none;
}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
@media(max-width:980px){.hero{padding:52px 0 46px}.hero .wrap{grid-template-columns:1fr;gap:36px}}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);
}
.eyebrow::before{content:"";width:22px;height:1.5px;background:var(--accent)}
.hero h1{
  font-size:clamp(32px,4.4vw,52px);
  margin:20px 0 18px;
  letter-spacing:-.028em;
  font-weight:700;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero .lede{font-size:17px;color:var(--muted);max-width:52ch;line-height:1.68}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-note{
  margin-top:22px;font-size:13px;color:var(--muted);
  display:flex;align-items:center;gap:8px;
}
.hero-note svg{width:15px;height:15px;flex:0 0 15px}

/* lookup card */
.lookup{
  background:#fff;border:1px solid var(--line);border-radius:6px;
  box-shadow:0 18px 44px -28px rgba(16,20,24,.30);
  padding:26px;
}
.lookup h3{font-size:15px;letter-spacing:.01em}
.lookup p.small{font-size:13px;color:var(--muted);margin-top:6px}
.field{display:flex;flex-direction:column;gap:7px;margin-top:16px}
.field label{font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#3d4b57}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line-strong);border-radius:3px;
  padding:11px 12px;font-size:14.5px;font-family:inherit;color:var(--ink);background:#fff;
  outline:none;transition:.15s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--ink);box-shadow:0 0 0 3px rgba(16,20,24,.07);
}
.lookup .btn{width:100%;margin-top:14px}
.lookup .hint{
  margin-top:12px;font-size:12px;color:var(--muted);
  font-family:var(--mono);letter-spacing:.01em;
}

/* ---------- trust strip ---------- */
.strip{border-bottom:1px solid var(--line);background:#fff}
.strip .wrap{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.strip .item{
  padding:26px 24px;border-left:1px solid var(--line);
}
.strip .item:first-child{border-left:0;padding-left:0}
.strip .num{font-size:26px;font-weight:700;letter-spacing:-.02em}
.strip .num span{font-size:15px;font-weight:600;color:var(--accent);margin-left:2px}
.strip .lbl{font-size:12.5px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
@media(max-width:820px){
  .strip .wrap{grid-template-columns:1fr 1fr}
  .strip .item{padding:20px;border-top:1px solid var(--line)}
  .strip .item:nth-child(odd){border-left:0;padding-left:0}
  .strip .item:nth-child(-n+2){border-top:0}
}

/* ---------- sections ---------- */
.section{padding:78px 0}
.section.soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:660px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-top:14px;letter-spacing:-.022em}
.section-head p{color:var(--muted);margin-top:12px;font-size:15.5px}

/* ---------- category cards ---------- */
.cards{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
@media(max-width:1080px){.cards{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.cards{grid-template-columns:1fr 1fr}}
@media(max-width:480px){.cards{grid-template-columns:1fr}}

.card{
  border:1px solid var(--line);border-radius:5px;background:#fff;
  padding:22px 20px;display:flex;flex-direction:column;
  transition:.18s ease;min-height:214px;
}
.card:hover{border-color:var(--line-strong);box-shadow:0 14px 30px -22px rgba(16,20,24,.35);transform:translateY(-2px)}
.card .ico{
  width:38px;height:38px;border-radius:3px;background:var(--accent-soft);
  display:grid;place-items:center;margin-bottom:16px;color:var(--accent);
}
.card .ico svg{width:19px;height:19px}
.card h3{font-size:15.5px;letter-spacing:-.01em;margin-bottom:8px}
.card p{font-size:13px;color:var(--muted);line-height:1.6}
.card .more{
  margin-top:auto;padding-top:16px;font-size:12.5px;font-weight:650;
  color:var(--accent);letter-spacing:.02em;display:flex;align-items:center;gap:6px;
}
.card .more svg{width:13px;height:13px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;counter-reset:s}
@media(max-width:820px){.steps{grid-template-columns:1fr;gap:22px}}
.step{padding-top:22px;border-top:2px solid var(--ink);position:relative}
.step .n{
  font-family:var(--mono);font-size:12px;color:var(--accent);
  font-weight:600;letter-spacing:.08em;
}
.step h3{font-size:17px;margin:9px 0 8px}
.step p{font-size:14px;color:var(--muted);line-height:1.65}

/* ---------- split panel ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:6px;overflow:hidden}
@media(max-width:900px){.split{grid-template-columns:1fr}}
.split .pane{padding:44px}
.split .pane.dark{background:var(--bg-deep);color:#dfe6ec}
.split .pane.dark h2{color:#fff}
.split .pane h2{font-size:26px;letter-spacing:-.02em}
.split .pane p{margin-top:14px;font-size:14.5px;line-height:1.7}
.split .pane.dark p{color:#a9b6c1}
.split .pane.dark .btn{margin-top:26px}
.split .pane .btn{margin-top:26px}
.split ul.list{margin-top:20px;display:grid;gap:11px}
.split ul.list li{display:flex;gap:10px;font-size:14px;color:#33404c;align-items:flex-start}
.split .pane.dark ul.list li{color:#c2cedb}
.split ul.list svg{width:16px;height:16px;flex:0 0 16px;margin-top:3px;color:var(--accent)}
@media(max-width:640px){.split .pane{padding:30px 22px}}

/* ---------- page header ---------- */
.page-head{
  padding:56px 0 44px;border-bottom:1px solid var(--line);background:#fbfbfc;
}
.page-head h1{font-size:clamp(28px,3.6vw,40px);letter-spacing:-.025em;margin-top:16px}
.page-head p{color:var(--muted);margin-top:14px;max-width:64ch;font-size:16px}
.crumb{font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.crumb a:hover{color:var(--accent)}
.crumb span{margin:0 7px;color:#b9c2ca}

/* ---------- product detail ---------- */
.cat-block{
  display:grid;grid-template-columns:300px 1fr;gap:44px;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.cat-block:last-of-type{border-bottom:0}
@media(max-width:900px){.cat-block{grid-template-columns:1fr;gap:20px;padding:32px 0}}
.cat-block .aside h2{font-size:22px;letter-spacing:-.02em}
.cat-block .aside .tag{
  display:inline-block;margin-top:12px;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);border:1px solid var(--line);
  padding:4px 9px;border-radius:2px;
}
.cat-block .aside p{font-size:13.5px;color:var(--muted);margin-top:14px;line-height:1.65}
.parts{display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
@media(max-width:640px){.parts{grid-template-columns:1fr}}
.parts li{
  display:flex;justify-content:space-between;gap:14px;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:14px;
}
.parts li span:first-child{color:#26313b}
.parts li span:last-child{
  font-family:var(--mono);font-size:11.5px;color:var(--muted);
  white-space:nowrap;padding-top:2px;
}

/* ---------- table ---------- */
.table-wrap{border:1px solid var(--line);border-radius:5px;overflow:auto;background:#fff}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:680px}
thead th{
  text-align:left;font-size:11px;letter-spacing:.10em;text-transform:uppercase;
  color:var(--muted);font-weight:700;padding:13px 16px;background:var(--bg-soft);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fafbfc}
td.mono,.mono{font-family:var(--mono);font-size:12.5px;letter-spacing:.01em}
td .make{font-size:11px;color:var(--muted);display:block;margin-top:2px;letter-spacing:.04em;text-transform:uppercase}
.pill{
  display:inline-block;font-size:11px;font-weight:650;padding:3px 8px;border-radius:2px;
  background:#eef6f0;color:#256c43;letter-spacing:.02em;white-space:nowrap;
}
.pill.warn{background:#fdf4e7;color:#9a6407}

/* ---------- search ---------- */
.searchbar{
  display:flex;gap:10px;align-items:center;flex-wrap:wrap;
  padding:18px;border:1px solid var(--line);border-radius:5px;background:#fff;
  margin-bottom:18px;
}
.searchbar .grow{flex:1 1 260px;position:relative}
.searchbar .grow svg{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;color:#8b98a4;
}
.searchbar input{
  width:100%;height:44px;border:1px solid var(--line-strong);border-radius:3px;
  padding:0 12px 0 38px;font-size:14.5px;font-family:inherit;outline:none;
}
.searchbar input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(16,20,24,.07)}
.searchbar select{
  height:44px;border:1px solid var(--line-strong);border-radius:3px;
  padding:0 30px 0 12px;font-size:14px;font-family:inherit;background:#fff;outline:none;color:#33404c;
}
.result-meta{font-size:13px;color:var(--muted);margin:14px 2px}
.result-meta b{color:var(--ink)}
.empty{
  padding:44px 20px;text-align:center;border:1px dashed var(--line-strong);
  border-radius:5px;color:var(--muted);font-size:14px;background:#fbfbfc;
}

/* ---------- notices ---------- */
.notice{
  border-left:3px solid var(--accent);background:var(--accent-soft);
  padding:16px 20px;border-radius:0 3px 3px 0;font-size:13.5px;color:#5a3418;
}
.notice.grey{border-color:var(--line-strong);background:var(--bg-soft);color:var(--muted)}
.notice b{color:#3d2410}

/* ---------- prose ---------- */
.prose{max-width:720px}
.prose h2{font-size:24px;margin-top:44px;letter-spacing:-.02em}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:16.5px;margin-top:28px}
.prose p{margin-top:14px;color:#2f3b46;font-size:15.5px;line-height:1.75}
.prose ul{margin-top:14px;display:grid;gap:9px}
.prose ul li{
  position:relative;padding-left:18px;font-size:15px;color:#2f3b46;
}
.prose ul li::before{
  content:"";position:absolute;left:0;top:10px;width:6px;height:6px;
  background:var(--accent);border-radius:1px;
}
.prose strong{font-weight:650}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr;gap:36px}}
.form-card{border:1px solid var(--line);border-radius:6px;padding:32px;background:#fff}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.form-row{grid-template-columns:1fr}.form-card{padding:22px}}
.form-card .field{margin-top:0}
.form-card .grid-gap{display:grid;gap:16px;margin-top:16px}
.form-card textarea{min-height:110px;resize:vertical}
.form-card .btn{width:100%;margin-top:20px;height:48px}
.form-foot{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.6}

.info-block{border-top:2px solid var(--ink);padding-top:20px;margin-bottom:30px}
.info-block h3{font-size:13px;letter-spacing:.10em;text-transform:uppercase;color:var(--muted);font-weight:700}
.info-block .v{font-size:16px;margin-top:8px;font-weight:600}
.info-block .v.small{font-size:14px;font-weight:400;color:var(--muted);margin-top:4px}

/* ---------- CTA band ---------- */
.band{
  background:var(--bg-deep);color:#fff;padding:64px 0;
}
.band .wrap{display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap}
.band h2{font-size:clamp(22px,2.6vw,30px);letter-spacing:-.02em;max-width:24ch}
.band p{color:#9fb0bd;margin-top:10px;font-size:14.5px;max-width:46ch}
.band .btn-primary{height:48px;padding:0 26px}

/* ---------- footer ---------- */
.site-footer{background:#0b0f12;color:#8d9ba7;padding:56px 0 26px;font-size:13.5px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr}}
.site-footer .brand .word b{color:#fff}
.site-footer .brand .word span{color:#6f7f8c}
.site-footer .brand .mark{background:#1b232b}
.foot-about{margin-top:18px;max-width:34ch;line-height:1.7}
.foot-col h4{
  color:#fff;font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
  font-weight:700;margin-bottom:14px;
}
.foot-col li{margin-bottom:9px}
.foot-col a:hover{color:#fff}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid #1e272e;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#66757f;
}
.foot-bottom .legal span{margin-left:14px}