/* =========================================================
 * 印南多頁網站版型 (2026-11)：精簡首頁、圖卡導覽、子頁
 * ========================================================= */
:root {
  --font-default: "Segoe UI", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", Roboto, Arial, sans-serif;
  --font-primary: "Segoe UI", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", Roboto, Arial, sans-serif;
  --font-secondary: "Segoe UI", "Microsoft JhengHei", "PingFang TC", "Noto Sans TC", Roboto, Arial, sans-serif;
}
body, h1, h2, h3, h4, h5, h6 { font-family: var(--font-default); }
h1, h2, h3, h4 { color: var(--yn-navy); }

/* ---------- 頁首 ---------- */
.header { transition: background .25s, padding .25s; padding: 22px 0; }
.header.header-solid { position: relative; background: var(--yn-navy); padding: 14px 0; }
.header.scrolled { position: fixed; background: rgba(14, 25, 41, .96); padding: 10px 0; box-shadow: 0 4px 18px rgba(0,0,0,.2); }
.yn-logo { font-size: 34px; font-weight: 800; color: var(--yn-red); letter-spacing: .5px; line-height: 1; }
.yn-since { color: #c9d1da; font-size: 14px; margin-left: 8px; align-self: flex-start; }
.navbar .yn-lang {
  border: 1px solid rgba(255,255,255,.45); border-radius: 4px; padding: 4px 12px !important; margin-left: 10px;
}
.navbar .yn-lang:before { display: none !important; }
@media (max-width: 1279px) {
  .navbar .yn-lang { margin: 10px 20px; display: inline-block; border-color: rgba(255,255,255,.5); color: #fff !important; }
  .yn-logo { font-size: 28px; }
}

/* ---------- 子頁標題帶 ---------- */
.yn-pagehead {
  background: linear-gradient(120deg, #14243a 0%, #1d3556 60%, #2f5d8a 100%); color: #fff; padding: 46px 0 40px;
  position: relative; overflow: hidden;
}
.yn-pagehead:after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 300px; height: 300px; border-radius: 50%;
  border: 40px solid rgba(255,255,255,.04);
}
.yn-pagehead h1 { color: #fff; font-size: 36px; font-weight: 800; margin: 8px 0 6px; }
.yn-pagehead p { color: #c9d6e3; margin: 0; font-size: 17px; max-width: 760px; }
.yn-crumbs { font-size: 14px; color: #a9c1d9; }
.yn-crumbs a { color: #fff; }
.yn-crumbs i { font-size: 11px; margin: 0 6px; }
@media (max-width: 575px) { .yn-pagehead h1 { font-size: 27px; } }

/* ---------- 首頁主視覺 ---------- */
.yn-hero .carousel { min-height: 78vh; }
.yn-hero .carousel-item img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.yn-hero .carousel-item::before { z-index: 1; background: linear-gradient(180deg, rgba(10,18,30,.72), rgba(10,18,30,.6)); }
.yn-hero .info { padding-top: 60px; }
.yn-hero h1 { color: #fff; font-size: 52px; font-weight: 800; margin-bottom: 16px; }
.yn-hero .yn-kicker { color: #ff8a96 !important; font-weight: 700; letter-spacing: 1px; margin-bottom: 10px; font-size: 16px !important; }
.yn-hero .yn-hero-text { font-size: 19px !important; max-width: 720px; margin: 0 auto 26px; color: #e3e9ef !important; }
@media (max-width: 768px) { .yn-hero h1 { font-size: 34px; } .yn-hero .carousel { min-height: 88vh; } .yn-hero .info { padding: 60px 18px 0; } }

/* ---------- 數字 ---------- */
.yn-stats { background: var(--yn-red); color: #fff; padding: 22px 0; }
.yn-stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; text-align: center; }
.yn-stats strong { display: block; font-size: 34px; font-weight: 800; line-height: 1.1; }
.yn-stats span { font-size: 14px; opacity: .9; }
@media (max-width: 575px) { .yn-stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 16px; } .yn-stats strong { font-size: 28px; } }

/* ---------- 首頁圖卡 ---------- */
.yn-sec-tight { padding: 44px 0 56px; }
.yn-tiles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 991px) { .yn-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575px) { .yn-tiles { grid-template-columns: minmax(0, 1fr); } }
.yn-tile {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--yn-line); border-radius: 12px; overflow: hidden;
  color: inherit; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.yn-tile:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(20,36,58,.12); border-color: transparent; color: inherit; }
.yn-tile-media { height: 180px; background: #fff; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid var(--yn-line); }
.yn-tile-media img { max-width: 92%; max-height: 160px; object-fit: contain; }
.yn-tile-media.icon { background: linear-gradient(135deg, #14243a, #2f5d8a); }
.yn-tile-media.icon i { font-size: 64px; color: #fff; }
.yn-tile-body { padding: 18px 20px 20px; position: relative; flex: 1; }
.yn-tile-body h3 { font-size: 19px; font-weight: 700; margin: 0 0 6px; padding-right: 40px; }
.yn-tile-body p { color: var(--yn-muted); font-size: 15px; margin: 0; }
.yn-tile-go {
  position: absolute; right: 18px; top: 18px; width: 32px; height: 32px; border-radius: 50%; background: var(--yn-red-soft);
  color: var(--yn-red); display: flex; align-items: center; justify-content: center; transition: background .2s, color .2s;
}
.yn-tile:hover .yn-tile-go { background: var(--yn-red); color: #fff; }

/* ---------- 認證 / 為什麼 ---------- */
.yn-certs { display: flex; flex-wrap: wrap; gap: 14px 22px; justify-content: center; align-items: center; }
.yn-certs img { height: 48px; width: auto; filter: grayscale(.15); }
.yn-why { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 991px) { .yn-why { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.yn-why-item { background: #fff; border: 1px solid var(--yn-line); border-radius: 12px; padding: 22px; text-align: center; }
.yn-why-item i { font-size: 34px; color: var(--yn-red); }
.yn-why-item h3 { font-size: 18px; font-weight: 700; margin: 10px 0 6px; }
.yn-why-item p { color: var(--yn-muted); font-size: 14px; margin: 0; }

/* ---------- 常見問題 ---------- */
.yn-faq-list { max-width: 860px; margin: 0 auto; }
.yn-faq-item { background: #fff; border: 1px solid var(--yn-line); border-radius: 10px; margin-bottom: 10px; }
.yn-faq-item summary {
  cursor: pointer; padding: 16px 48px 16px 20px; font-weight: 700; color: var(--yn-navy); list-style: none; position: relative; font-size: 17px;
}
.yn-faq-item summary::-webkit-details-marker { display: none; }
.yn-faq-item summary:after { content: "+"; position: absolute; right: 20px; top: 12px; font-size: 24px; color: var(--yn-red); }
.yn-faq-item[open] summary:after { content: "−"; }
.yn-faq-item p { padding: 0 20px 18px; margin: 0; color: var(--yn-ink); }

/* ---------- 底部詢價帶 ---------- */
.yn-ctaband { background: var(--yn-navy); color: #fff; padding: 36px 0; }
.yn-ctaband .container { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; }
.yn-ctaband h2 { color: #fff; font-size: 24px; font-weight: 800; margin: 0 0 4px; }
.yn-ctaband p { color: #c9d1da; margin: 0; }
.yn-ctaband-btns { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- 產品頁 ---------- */
.yn-prods { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 767px) { .yn-prods { grid-template-columns: minmax(0, 1fr); } }
.yn-prod { display: grid; grid-template-columns: 220px minmax(0, 1fr); background: #fff; border: 1px solid var(--yn-line); border-radius: 12px; overflow: hidden; scroll-margin-top: 90px; }
@media (max-width: 480px) { .yn-prod { grid-template-columns: minmax(0, 1fr); } }
.yn-prod-media { background: #fff; display: flex; align-items: center; justify-content: center; padding: 12px; border-right: 1px solid var(--yn-line); min-height: 200px; }
.yn-prod-media img { max-width: 100%; max-height: 190px; object-fit: contain; }
.yn-prod-media.icon { background: linear-gradient(135deg, #14243a, #2f5d8a); }
.yn-prod-media.icon i { font-size: 70px; color: #fff; }
.yn-prod-body { padding: 18px 20px; }
.yn-prod-body h2 { font-size: 19px; font-weight: 700; margin: 0 0 6px; }
.yn-prod-body p { color: var(--yn-muted); font-size: 14px; margin-bottom: 8px; }
.yn-prod-body ul { padding-left: 18px; margin: 0 0 10px; font-size: 14px; color: var(--yn-ink); }
.yn-more { font-weight: 700; font-size: 14px; color: var(--yn-red); }

/* ---------- 共用 ---------- */
.yn-btnrow { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 18px; }
.yn-btnrow.left { justify-content: flex-start; }
.yn-h2l { font-size: 26px; font-weight: 800; color: var(--yn-navy); margin-bottom: 12px; }
.yn-box h3, .yn-type h3 { font-size: 18px; font-weight: 700; color: var(--yn-navy); }
.yn-type h3 { font-size: 17px; margin-bottom: 6px; }
.yn-svcgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 991px) { .yn-svcgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 575px) { .yn-svcgrid { grid-template-columns: minmax(0, 1fr); } }
.yn-svc h2 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.page-electromagnet .yn-types, .page-web .yn-types { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
@media (max-width: 360px) { .page-electromagnet .yn-types, .page-web .yn-types { grid-template-columns: minmax(0, 1fr); } }
.yn-sec .text-center .yn-mit { margin-bottom: 22px; }

/* ---------- 關於 / 新聞 / 聯絡 ---------- */
.yn-about { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 36px; align-items: start; }
@media (max-width: 767px) { .yn-about { grid-template-columns: minmax(0, 1fr); } }
.yn-about-img img { width: 100%; height: auto; max-width: 300px; border-radius: 12px; border: 1px solid var(--yn-line); }
.yn-about-text p { color: var(--yn-ink); font-size: 16px; line-height: 1.8; }
.yn-about-text .yn-certs { justify-content: flex-start; margin-top: 22px; }
.yn-newsgrid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 767px) { .yn-newsgrid { grid-template-columns: minmax(0, 1fr); } }
.yn-news a { display: block; background: #fff; border: 1px solid var(--yn-line); border-radius: 12px; overflow: hidden; color: inherit; height: 100%; }
.yn-news a:hover { box-shadow: 0 10px 24px rgba(20,36,58,.1); }
.yn-news img { width: 100%; height: 180px; object-fit: cover; }
.yn-news div { padding: 14px 16px; }
.yn-news time { font-size: 13px; color: var(--yn-red); font-weight: 700; }
.yn-news h3 { font-size: 16px; font-weight: 700; margin: 4px 0; }
.yn-news span { font-size: 13px; color: var(--yn-muted); }
.yn-contact { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 20px; }
@media (max-width: 991px) { .yn-contact { grid-template-columns: minmax(0, 1fr); } }
.yn-contact-list { list-style: none; padding: 0; margin: 0 0 6px; }
.yn-contact-list li { display: grid; grid-template-columns: 28px 64px minmax(0, 1fr); gap: 6px; padding: 9px 0; border-bottom: 1px solid var(--yn-line); align-items: start; }
.yn-contact-list i { color: var(--yn-red); font-size: 18px; }
.yn-contact-list span { color: var(--yn-muted); }
.yn-contact-list address { margin: 0; }
.yn-map { margin-top: 20px; border-radius: 12px; overflow: hidden; border: 1px solid var(--yn-line); }
.yn-map iframe { width: 100%; height: 360px; border: 0; display: block; }

/* 頁尾 */
.footer { padding: 60px 0 30px; }
.footer .footer-links h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.footer .footer-links ul { list-style: none; padding: 0; margin: 0; }
.footer .footer-links li { padding: 4px 0; }
.footer .footer-links a, .footer .footer-info a { color: #c9d1da; }
.footer .footer-links a:hover, .footer .footer-info a:hover { color: #fff; }
.footer .footer-info h3 { color: #fff; font-size: 22px; }
.footer .footer-info p { color: #c9d1da; }

/* 磁學實驗室頁 */
.page-lab .yn-lab-sec { padding-top: 40px; }