/* TaiSpring Precision — site styles */
:root{
  --navy:#0d2137; --navy2:#16324f; --steel:#3d5a80; --ink:#1c2b3a;
  --body:#3a4a5a; --line:#dde5ec; --bg:#ffffff; --bg-alt:#f4f7fa;
  --accent:#e8630a; --accent-dk:#c85408; --ok:#1a7f4e;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",
  "Hiragino Sans","Yu Gothic",Roboto,Helvetica,Arial,sans-serif;
  color:var(--body);background:var(--bg);line-height:1.75;font-size:16.5px}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
a{color:var(--steel)}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}

/* header */
.site-head{position:sticky;top:0;z-index:50;background:var(--navy);
  box-shadow:0 1px 6px rgba(0,0,0,.25)}
.site-head .wrap{display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  padding-top:10px;padding-bottom:10px;max-width:1400px}
.logo{color:#fff;font-weight:800;text-decoration:none;font-size:17px;
  display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo-mark{width:26px;height:26px;flex-shrink:0}
.nav{display:flex;gap:4px;flex-wrap:nowrap;flex:1}
.nav a{color:#cfdce8;text-decoration:none;padding:6px 10px;border-radius:6px;
  font-size:14.5px;white-space:nowrap}
.nav a:hover{background:var(--navy2);color:#fff}
.langs{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.lang{white-space:nowrap}
/* 選單放不下一行時，整排移到第二行，不要讓單一項目被擠下去 */
@media(max-width:1359px){
  .nav{order:3;flex:none;flex-basis:100%;width:100%}
}
.lang{color:#9fb3c4;text-decoration:none;font-size:12.5px;padding:4px 8px;
  border:1px solid #33506b;border-radius:20px}
.lang.on{background:#fff;color:var(--navy);border-color:#fff;font-weight:700}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;
  text-decoration:none;padding:10px 22px;border-radius:8px;border:none;
  font-size:15.5px;cursor:pointer}
.btn:hover{background:var(--accent-dk)}
.btn.ghost{background:transparent;border:2px solid #fff;}
.head-cta{padding:7px 16px;font-size:14px}

/* hero */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 55%,var(--steel) 100%);
  color:#dce7f1;padding:72px 0 64px}
.hero .kicker{color:var(--accent);font-weight:800;letter-spacing:1.5px;
  text-transform:uppercase;font-size:13.5px;margin-bottom:14px}
.hero h1{color:#fff;font-size:clamp(28px,4.6vw,46px);max-width:22em;
  margin-bottom:18px}
.hero .sub{font-size:18.5px;max-width:44em;margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap}
.hero-badges span{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);
  border-radius:30px;padding:5px 14px;font-size:13.5px}

/* hero media (photo/video proof, right side of hero on wide screens) */
.hero .wrap.hero-split{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;max-width:1080px}
@media(max-width:900px){.hero .wrap.hero-split{grid-template-columns:1fr}}
.hero-media{border-radius:14px;overflow:hidden;box-shadow:0 12px 34px rgba(0,0,0,.35);
  border:1px solid rgba(255,255,255,.15)}
.hero-media video,.hero-media img{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover}

/* sections */
.block{padding:56px 0}
.wrap.block{padding-left:22px;padding-right:22px}
.alt{background:var(--bg-alt)}
.block h2{font-size:27px;margin-bottom:24px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:24px;box-shadow:0 1px 3px rgba(13,33,55,.06)}
.card h3{font-size:18.5px;margin-bottom:10px}
.card.svc{text-decoration:none;display:block;color:var(--body);
  transition:transform .15s, box-shadow .15s}
.card.svc:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(13,33,55,.12)}
.card .more{color:var(--accent);font-weight:700;font-size:14.5px;
  display:inline-block;margin-top:10px}
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:44px}
@media(max-width:820px){.twocol{grid-template-columns:1fr}}
.checks{list-style:none}
.checks li{padding:9px 0 9px 32px;position:relative;border-bottom:1px dashed var(--line)}
.checks li:before{content:"✓";position:absolute;left:2px;color:var(--ok);
  font-weight:800}

/* tables */
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{border:1px solid var(--line);padding:10px 14px;text-align:left;
  vertical-align:top}
thead th,.specs th{background:var(--bg-alt);color:var(--ink);width:38%}
tbody tr:nth-child(even){background:#fafcfe}

/* page head */
.pagehead{background:linear-gradient(120deg,var(--navy),var(--navy2));
  color:#dce7f1;padding:52px 0 44px}
.pagehead h1{color:#fff;font-size:clamp(26px,3.6vw,38px);margin-bottom:12px}
.pagehead .sub{font-size:17.5px;max-width:50em}

/* prose / article */
.prose h2{font-size:24px;margin:38px 0 14px}
.prose h3{font-size:19px;margin:28px 0 10px}
.prose p{margin:14px 0}
.prose ul,.prose ol{margin:14px 0 14px 26px}
.prose li{margin:6px 0}
.prose table{margin:16px 0}
.article h1{font-size:clamp(25px,3.4vw,34px);margin:14px 0 8px}
.article .meta{color:#7b8b9a;font-size:14px;margin-bottom:20px}
.crumb{font-size:13.5px;color:#7b8b9a}
.crumb a{color:#7b8b9a}
.answer{background:#eef6ee;border-left:5px solid var(--ok);border-radius:0 10px 10px 0;
  padding:16px 20px;margin:6px 0 10px;color:#254432;font-size:16px}
.related{background:var(--bg-alt);border-radius:12px;padding:20px 24px;margin-top:36px}
.related h2{font-size:17px;margin-bottom:10px}
.related ul{margin-left:20px}

/* FAQ */
.faq{max-width:1080px;margin:0 auto;padding:20px 22px 56px}
.faq h2{font-size:25px;margin-bottom:18px}
.faq details{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;
  background:#fff}
.faq summary{cursor:pointer;font-weight:700;color:var(--ink);padding:15px 18px;
  list-style:none;position:relative;padding-right:40px}
.faq summary:after{content:"+";position:absolute;right:18px;top:12px;
  font-size:20px;color:var(--accent)}
.faq details[open] summary:after{content:"–"}
.faq details>div{padding:0 18px 15px}
.article .faq{padding:20px 0 8px}

/* CTA */
.cta{background:linear-gradient(120deg,var(--navy),var(--steel));color:#dce7f1;
  text-align:center;padding:56px 22px;margin-top:30px}
.cta h2{color:#fff;font-size:26px;margin-bottom:10px}
.cta p{max-width:40em;margin:0 auto 24px}

/* articles index */
.artgroup{margin-bottom:34px}
.artgroup h2{font-size:21px;border-left:5px solid var(--accent);
  padding-left:12px;margin-bottom:12px}
.artlist{list-style:none;columns:2;column-gap:40px}
@media(max-width:720px){.artlist{columns:1}}
.artlist li{margin:7px 0;break-inside:avoid}
.artlist a{text-decoration:none}
.artlist a:hover{text-decoration:underline}

/* form */
.rfq{display:flex;flex-direction:column;gap:14px}
.rfq label{display:flex;flex-direction:column;gap:6px;font-weight:600;
  color:var(--ink);font-size:14.5px}
.rfq input,.rfq select,.rfq textarea{padding:11px 12px;border:1px solid #c3cfda;
  border-radius:8px;font-size:15.5px;font-family:inherit;background:#fff}
.rfq input:focus,.rfq textarea:focus,.rfq select:focus{outline:2px solid var(--steel)}
.formnote{font-size:13px;color:#7b8b9a}
.sidecard{background:var(--bg-alt);border-radius:14px;padding:28px;height:fit-content}
.sidecard h2{font-size:20px;margin-bottom:14px}
.sidecard h3{margin:22px 0 6px;font-size:16px}
.steps{margin-left:20px}
.steps li{margin:10px 0}

/* footer */
.site-foot{background:var(--navy);color:#9fb3c4;margin-top:0;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px;
  padding:46px 22px 30px}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-brand{color:#fff;font-weight:800;margin-bottom:10px;display:flex;
  align-items:center;gap:8px}
.site-foot h4{color:#fff;font-size:14px;margin-bottom:10px;letter-spacing:.5px}
.site-foot a{color:#c3d3e0;text-decoration:none;display:block;margin:6px 0}
.site-foot a:hover{color:#fff}
.phone-note{font-size:12px;color:#7b8b9a;margin:-2px 0 8px}
.copyright{line-height:1.7}
.copyright{border-top:1px solid #24405c;padding:16px 22px;font-size:13px}

@media(max-width:900px){
  .site-head .wrap{gap:10px}
  .nav{order:3;flex-basis:100%;width:100%;justify-content:flex-start;
    flex-wrap:wrap}
  .head-cta{display:none}
}

/* on-page media gallery (process photos/video, factory proof) */
.media-gallery h2{font-size:22px;margin-bottom:6px}
.media-gallery .media-note{color:#5c6b7a;font-size:14.5px;margin-bottom:20px}
.media-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.media-cell{border-radius:12px;overflow:hidden;background:#0d2137;
  box-shadow:0 3px 10px rgba(13,33,55,.12)}
.media-cell video,.media-cell img{display:block;width:100%;height:100%;
  aspect-ratio:4/3;object-fit:cover}
.media-cell figcaption{padding:9px 12px;font-size:13px;color:#5c6b7a;background:#fff}

/* product-page capability icons/mini nav (springs hub -> compression/torsion/extension) */
.grid3.products .card.svc{border-top:3px solid var(--accent)}

/* 韓文依詞斷行，避免把一個詞從中間切開 */
html[lang="ko"] body{word-break:keep-all;overflow-wrap:break-word}