:root{--brand:#0078CF;--brand-deep:#005a9c;--brand-soft:#e6f2fb;--brand-tint:#f4f9fd;--ink:#111418;--ink-2:#2a2e35;--ink-3:#555a63;--ink-4:#8a8f97;--rule:#e6e8ec;--rule-2:#f0f2f5;--bg:#ffffff;--bg-soft:#f8f9fb;--radius:14px;--radius-lg:24px;--radius-pill:999px;--shadow-sm:0 1px 2px rgba(15,20,30,.05);--shadow-md:0 4px 12px rgba(15,20,30,.06),0 2px 4px rgba(15,20,30,.04);--font-sans:'Open Sans','Noto Sans TC',sans-serif;--font-display:'Noto Sans TC','Open Sans',sans-serif}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.65;color:var(--ink-2);background:var(--bg);-webkit-font-smoothing:antialiased}img{max-width:100%;display:block;height:auto}a{color:var(--brand);text-decoration:none;transition:color .2s}a:hover{color:var(--brand-deep)}::selection{background:var(--brand);color:#fff}
.container{max-width:1280px;margin:0 auto;padding:0 32px}@media(max-width:720px){.container{padding:0 20px}}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--rule)}.site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px}.site-logo{display:flex;align-items:center;gap:12px}.site-logo img{height:36px;width:36px;border-radius:8px;object-fit:contain}.site-logo .name{display:block;font-weight:700;color:var(--ink);font-size:16px;line-height:1.2}.site-logo .name small{display:block;font-weight:500;font-size:10px;color:var(--ink-4);letter-spacing:.2em;text-transform:uppercase;margin-top:4px}.site-nav{display:flex;align-items:center;gap:4px}.site-nav a{color:var(--ink-2);font-size:14.5px;font-weight:500;padding:10px 16px;border-radius:8px;transition:all .15s}.site-nav a:hover{background:var(--rule-2);color:var(--ink)}.site-nav a.active{color:var(--brand)}.header-cta{display:inline-flex;align-items:center;gap:8px;margin-left:12px;padding:10px 18px;background:#00a2e9;color:#111418;border-radius:var(--radius-pill);font-size:14px;font-weight:600;transition:all .2s}.header-cta:hover{color:#111418;background:#0088c5;transform:translateY(-1px)}.header-cta span{display:inline-block;transition:transform .2s}.header-cta:hover span{transform:translateX(3px)}

.breadcrumb{padding:16px 0 0;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-4)}
.breadcrumb a{color:var(--ink-4)}.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--rule)}.breadcrumb .cur{color:var(--ink-2);font-weight:500}

.page-hero{padding:32px 0 48px}
.page-eyebrow{font-size:13px;color:var(--brand);font-weight:600;letter-spacing:.18em;text-transform:uppercase;margin-bottom:12px}
.page-title{font-family:var(--font-display);font-size:44px;font-weight:700;line-height:1.1;letter-spacing:-.02em;color:var(--ink);margin:0 0 14px}
.page-desc{font-size:16px;color:var(--ink-3);line-height:1.7;max-width:780px;margin:0}

.rule{border:0;border-top:1px solid var(--rule);margin:0}

/* CTA */
.cta-band{margin:24px 0 56px;padding:40px 44px;background:var(--ink);color:#fff;border-radius:var(--radius-lg);display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;right:-100px;top:-100px;width:400px;height:400px;background:radial-gradient(circle,var(--brand) 0%,rgba(0,120,207,0) 70%);opacity:.35}
.cta-band h2{position:relative;z-index:1;margin:0 0 12px;font-family:var(--font-display);font-size:28px;font-weight:700;color:#fff}
.cta-band p{margin:0;color:rgba(255,255,255,.7);font-size:15px;line-height:1.65;position:relative;z-index:1}
.cta-actions{display:flex;gap:12px;justify-content:flex-end;z-index:1;position:relative;flex-wrap:wrap}
.btn-on-dark{background:#fff;color:var(--ink);display:inline-flex;align-items:center;gap:10px;padding:13px 24px;border-radius:var(--radius-pill);font-size:15px;font-weight:600;transition:all .15s}
.btn-on-dark:hover{background:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-on-dark-ghost{color:#fff;border:1px solid rgba(255,255,255,.24);padding:13px 20px;border-radius:var(--radius-pill);font-size:15px;font-weight:600}
.btn-on-dark-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
@media(max-width:960px){.cta-band{grid-template-columns:1fr;padding:32px 24px}.cta-actions{justify-content:flex-start}}

/* FOOTER */
.site-footer{border-top:1px solid var(--rule);padding:24px 0 18px}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:36px;margin-bottom:20px}
.footer-brand p{color:var(--ink-3);font-size:14px;line-height:1.75;margin:12px 0;max-width:280px}
.footer-brand .socials{display:flex;gap:10px}
.footer-brand .socials a{width:34px;height:34px;border-radius:8px;background:var(--bg-soft);color:var(--ink-3);display:inline-flex;align-items:center;justify-content:center;transition:all .15s}
.footer-brand .socials a:hover{background:var(--brand);color:#fff}
.footer-brand .socials svg{width:16px;height:16px}
.footer-col h5{margin:0 0 12px;font-size:14px;font-weight:700;color:var(--ink)}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{padding:4px 0}
.footer-col li a{color:var(--ink-3);font-size:14px}
.footer-col li a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--rule);padding-top:20px;display:flex;justify-content:space-between;color:var(--ink-4);font-size:13px;flex-wrap:wrap;gap:12px}
@media(max-width:960px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:720px){.footer-grid{grid-template-columns:1fr}}

:root{--font-sans:'Noto Sans TC','Microsoft JhengHei',system-ui,sans-serif;--font-display:var(--font-sans)}
[hidden]{display:none!important}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #005a9c;outline-offset:4px}a{text-underline-offset:4px}.answer a,.references a{text-decoration:underline}section,details,li[id],#questions,.faq-alias{scroll-margin-top:100px}.skip-link{position:fixed;top:-100px;left:20px;z-index:100;background:#fff;padding:12px}.skip-link:focus{top:10px}.faq-hero{display:grid;grid-template-columns:1.3fr 1fr;gap:70px;align-items:center;padding:64px 0 48px}.faq-hero h1{font-size:clamp(34px,4.4vw,56px);line-height:1.3;letter-spacing:-.04em;margin:0 0 22px;color:var(--ink)}.faq-hero p{color:var(--ink-3);margin:12px 0}.faq-hero .hero-lead{font-size:21px;color:var(--ink-2);font-weight:600}.hero-link{display:inline-block;margin-top:18px;font-weight:700}.layer-card{background:var(--bg-soft);border:1px solid var(--rule);border-radius:24px;padding:30px}.card-label{font-size:14px;font-weight:700;margin-bottom:24px}.layer{padding:17px 20px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px;border-radius:10px}.layer span{font-size:13px}.gold{background:#f3e2ab;color:#55420e}.nickel{background:#dce4eb;color:#324451}.brass{background:#e3ceaa;color:#59452c}.layer-card p{font-size:12px;margin:20px 0 0}.key-note{display:flex;gap:24px;align-items:baseline;padding:22px 28px;border:1px solid #c7e0f3;background:var(--brand-tint);border-radius:14px}.key-note>strong{white-space:nowrap;color:var(--brand-deep)}.key-note p{margin:0;font-size:15px}.faq-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:56px;padding:56px 0}.topic-nav{position:sticky;top:100px;align-self:start}.topic-nav h2{font-size:14px;color:var(--ink-3);margin:0 0 18px}.topic-nav nav a{display:block;padding:12px 0;color:var(--ink-2);border-bottom:1px solid var(--rule)}.topic-nav nav a:hover{color:var(--brand-deep)}.topic-nav span{font-size:12px;color:var(--brand);margin-right:12px}.related{display:block;font-size:14px;margin-top:20px}.tools{padding:24px;background:var(--bg-soft);border-radius:14px;margin-bottom:38px}.tools label{display:block;font-size:14px;font-weight:700;margin-bottom:10px}.search-row{display:flex;gap:10px}.search-row input{min-width:0;width:100%;padding:12px 14px;border:1px solid #bac4ce;border-radius:8px;background:#fff}.tools button{background:#fff;border:1px solid #bac4ce;border-radius:8px;padding:8px 12px;white-space:nowrap;color:var(--ink-2)}.tools button:hover{background:var(--brand-soft)}.results-row{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap}.results-row p{font-size:13px;color:var(--ink-3);margin:0 auto 0 0}.results-row button{font-size:13px}.faq-group{margin-bottom:42px}.group-heading{display:flex;gap:16px;align-items:baseline;margin-bottom:18px}.group-heading>span{font-size:14px;color:var(--brand);font-weight:700}.group-heading h2{font-size:26px;margin:0 0 5px;color:var(--ink)}.group-heading p{margin:0;font-size:14px;color:var(--ink-3)}.faq-item{border-bottom:1px solid var(--rule)}summary{padding:20px 32px 20px 0;cursor:pointer;position:relative;font-weight:600;color:var(--ink-2);list-style:none}summary::-webkit-details-marker{display:none}summary::after{content:'+';position:absolute;right:4px;top:17px;font-size:23px;font-weight:400;color:var(--brand)}details[open] summary::after{content:'−'}details[open] summary{color:var(--brand-deep)}.answer{padding:0 24px 22px 0;font-size:15px;line-height:1.9}.answer p{margin:0 0 12px}.permalink{font-size:12px}.spec-check{padding:32px;background:var(--brand-tint);border-radius:20px;display:grid;grid-template-columns:1.1fr 1fr;gap:32px}.spec-check h2{font-size:25px;margin:0}.spec-check p{font-size:14px;color:var(--ink-3)}.spec-check ul{padding-left:20px;margin:0}.spec-check li{padding:5px 0}.references{padding:40px 0 24px;max-width:960px;color:var(--ink-3);font-size:13px}.references h2{font-size:18px;color:var(--ink-2)}.references ul{padding-left:20px}.references li{padding:5px 0}.footer-bottom,.site-logo .name small{color:#606771}
@media(max-width:1000px){.site-nav a{padding:10px}.faq-hero{gap:30px}.faq-layout{gap:28px;grid-template-columns:190px minmax(0,1fr)}}
@media(max-width:760px){.site-header .container{height:auto;min-height:72px;flex-wrap:wrap;padding-top:12px;padding-bottom:10px;gap:12px}.site-nav{display:flex;flex-wrap:wrap;gap:0}.site-nav a{padding:6px 10px;font-size:13px}.site-nav a.header-cta{margin-left:0}.site-logo .name{font-size:15px}.faq-hero{grid-template-columns:1fr;padding:36px 0 28px;gap:24px}.layer-card{padding:24px}.key-note{display:block;padding:20px}.key-note p{margin-top:8px}.faq-layout{display:block;padding:28px 0}.topic-nav{position:static;margin-bottom:28px}.topic-nav nav{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.topic-nav .related{display:inline-block;margin-right:16px}.group-heading h2{font-size:23px}.tools{padding:18px}.spec-check{grid-template-columns:1fr;padding:24px;gap:12px}.site-header{position:relative}section,details,li[id],#questions,.faq-alias{scroll-margin-top:20px}.desktop-break{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
@media print{.site-header,.site-footer,.tools,.topic-nav,.cta-band,.permalink,.skip-link{display:none!important}.container{max-width:none;padding:0}.faq-layout{display:block}.faq-hero{padding:0;gap:24px}.faq-hero h1{font-size:30px}.faq-group[hidden],.faq-item[hidden]{display:block!important}.answer{display:block!important}details{break-inside:avoid}.references a{color:inherit}body{font-size:11pt}.layer-card{padding:16px}}

/* Product-based FAQ categories */
.product-categories{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:0 0 28px}.product-categories a{display:flex;flex-direction:column;gap:10px;padding:28px 30px;border:1px solid #c7e0f3;border-radius:20px;background:var(--brand-tint);color:var(--ink-2)}.product-categories a:hover{border-color:var(--brand);background:var(--brand-soft)}.product-categories strong{font-size:28px;color:var(--ink)}.product-categories .category-label{font-size:12px;letter-spacing:.08em;color:var(--brand-deep);font-weight:700}.product-categories b{font-size:14px;color:var(--brand-deep);margin-top:6px}@media(max-width:600px){.product-categories{grid-template-columns:1fr;gap:12px}.product-categories a{padding:22px}.product-categories strong{font-size:24px}}@media print{.product-categories{display:none}}

/* Compact, keyboard-accessible technical references. */
.references{padding:24px 0;max-width:none}.reference-disclosure{border:1px solid var(--rule);border-radius:14px;background:var(--bg-soft)}.reference-disclosure>summary{padding:18px 52px 18px 22px}.reference-disclosure>summary h2{display:inline;margin:0;font-size:16px}.reference-disclosure>summary::after{content:'›';right:24px;top:50%;font-size:28px;line-height:1;transform:translateY(-50%);transition:transform .2s}.reference-disclosure[open]>summary::after{content:'›';transform:translateY(-50%) rotate(90deg)}.reference-content{padding:0 22px 20px;max-width:960px}.reference-content>p:first-child{margin-top:0}.reference-content ul{margin-bottom:0}@media print{.reference-disclosure{background:none;border:0}.reference-disclosure>summary{padding:8px 0}.reference-disclosure>summary::after{display:none}.reference-content{padding:0}}

/* Distinct product families and restored language navigation. */
.product-categories a[href="#comb-pins"]{background:#fff2d6;border-color:#e3c58b;border-top:4px solid #b88324}.product-categories a[href="#comb-pins"]:hover{background:#ffe9ba;border-color:#b88324}.product-categories a[href="#comb-pins"] .category-label,.product-categories a[href="#comb-pins"] b{color:#805412}.product-categories a[href="#electronic-pins"]{background:#e3f1ff;border-color:#a9cdee;border-top:4px solid #0078cf}.product-categories a[href="#electronic-pins"]:hover{background:#d0e7ff;border-color:#0078cf}
.site-nav a{white-space:nowrap}@media(min-width:761px) and (max-width:960px){.site-header .container{height:auto;min-height:72px;flex-wrap:wrap;gap:10px;padding-top:12px;padding-bottom:12px}.site-nav{flex-wrap:wrap}.site-nav a{padding:8px 10px}.site-nav .header-cta{margin-left:4px}.topic-nav{top:140px}section,details,li[id],#questions,.faq-alias{scroll-margin-top:150px}}