/* ==========================================================================
   Huayang Silicone (silicone-hy.com) — English site redesign
   Design replicated from huayang.jp (華陽株式会社)
   Colors: navy #1a2a4a / #0f1a30, accent red #c8102e, light grey #f8f9fa
   Fully responsive
   ========================================================================== */

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans SC", "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #222;
  background: #fff;
  font-size: 14px;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; transition: all .3s ease; }
img { max-width: 100%; border: 0; }
ul, ol, li { list-style: none; margin: 0; padding: 0; }
p, h1, h2, h3, h4, h5, h6 { margin: 0; }

.container { width: 1200px; max-width: 92%; margin: 0 auto; }
.clearfix::after { content: ""; display: table; clear: both; }

/* ============ HEADER ============ */
.hy-header {
  background: rgba(0,0,0,0.55);
  position: absolute; top: 0; left: 0; right: 0; z-index: 100;
  color: #fff;
}
.hy-header .hy-header-inner { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; flex-wrap: wrap; }
.hy-header-left { font-size: 13px; letter-spacing: 1px; color: #fff; }
.hy-logo img { height: 46px; display: block; }
.hy-header-right { display: flex; align-items: center; gap: 20px; }
.hy-tel { color: #fff; font-size: 18px; font-weight: 700; }
.hy-tel i { margin-right: 6px; }
.hy-mess-btn a { display: inline-block; background: #c8102e; color: #fff; padding: 9px 22px; border-radius: 3px; font-size: 13px; }
.hy-mess-btn a:hover { background: #a50d26; }

/* desktop nav */
.hy-nav { width: 100%; border-top: 1px solid rgba(255,255,255,0.18); margin-top: 6px; }
.hy-nav ul { display: flex; }
.hy-nav > ul > li { position: relative; }
.hy-nav > ul > li > a { display: block; padding: 12px 24px; color: #fff; font-size: 15px; }
.hy-nav > ul > li:hover > a, .hy-nav > ul > li.active > a { color: #ffb0bb; }
.hy-nav .hy-dropdown { position: absolute; top: 100%; left: 0; background: #fff; min-width: 200px; box-shadow: 0 6px 20px rgba(0,0,0,0.12); display: none; z-index: 50; }
.hy-nav > ul > li:hover .hy-dropdown { display: block; }
.hy-nav .hy-dropdown a { display: block; padding: 10px 18px; color: #333; font-size: 14px; border-bottom: 1px solid #f0f0f0; }
.hy-nav .hy-dropdown a:hover { color: #c8102e; background: #fafafa; }

/* mobile nav */
.hy-m-nav { display: none; background: #0f1a30; }
.hy-m-top { display: none; background: #0f1a30; color: #fff; padding: 12px 15px; align-items: center; justify-content: space-between; }
.hy-m-top .hy-m-logo img { height: 34px; }
.hy-menu-btn { width: 34px; height: 34px; position: relative; cursor: pointer; }
.hy-menu-btn span { position: absolute; left: 5px; right: 5px; height: 2px; background: #fff; top: 16px; }
.hy-menu-btn::before, .hy-menu-btn::after { content: ""; position: absolute; left: 5px; right: 5px; height: 2px; background: #fff; }
.hy-menu-btn::before { top: 9px; } .hy-menu-btn::after { bottom: 9px; }
.hy-m-nav ul li a { display: block; padding: 13px 20px; color: #fff; border-bottom: 1px solid rgba(255,255,255,0.08); font-size: 15px; }
.hy-m-nav ul li a:hover { color: #ffb0bb; }
.hy-m-nav .hy-m-tel { padding: 14px 20px; color: #fff; font-weight: 700; }

/* ============ BANNER ============ */
.hy-banner { height: 620px; position: relative; overflow: hidden; }
.hy-banner .hy-slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; transition: opacity .8s; }
.hy-banner .hy-slide.active { opacity: 1; }
.hy-banner .hy-dots { position: absolute; bottom: 24px; left: 0; right: 0; text-align: center; z-index: 10; }
.hy-banner .hy-dots span { display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.6); margin: 0 5px; cursor: pointer; }
.hy-banner .hy-dots span.active { background: #c8102e; }

/* ============ SECTION TITLE ============ */
.hy-sec-title { text-align: center; margin-bottom: 40px; }
.hy-sec-title h2 { font-size: 32px; font-weight: 700; color: #222; display: inline-block; position: relative; padding-bottom: 14px; }
.hy-sec-title h2::after { content: ""; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: #c8102e; }
.hy-sec-title.white h2 { color: #fff; }
.hy-sec-title p { margin-top: 14px; color: #888; font-size: 14px; }
.hy-sec-title.white p { color: #aaa; }

/* ============ COMPANY OVERVIEW ============ */
.hy-about { padding: 60px 0; }
.hy-about .hy-about-desc { text-align: center; font-size: 15px; color: #555; line-height: 2; max-width: 900px; margin: 0 auto 40px; }
.hy-about-icons { display: flex; justify-content: center; gap: 60px; flex-wrap: wrap; }
.hy-about-icon { text-align: center; }
.hy-about-icon .ico { width: 70px; height: 70px; border-radius: 50%; background: #1a2a4a; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; }
.hy-about-icon .ico svg { width: 30px; height: 30px; stroke: #fff; }
.hy-about-icon .name { font-size: 15px; font-weight: 700; color: #1a2a4a; }
.hy-about-btn { text-align: center; margin-top: 40px; }
.hy-about-btn a { display: inline-block; padding: 12px 40px; border: 2px solid #1a2a4a; color: #1a2a4a; font-size: 14px; border-radius: 4px; }
.hy-about-btn a:hover { background: #1a2a4a; color: #fff; }

/* ============ PRODUCTS ============ */
.hy-products { background: linear-gradient(135deg, #1a2a4a, #0f1a30); padding: 70px 0; }
.hy-products-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 30px; }
.hy-product-card { width: 22%; min-width: 200px; text-align: center; padding: 20px; }
.hy-product-card .ico { width: 80px; height: 80px; border-radius: 50%; background: #fff; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.hy-product-card .ico svg { width: 36px; height: 36px; stroke: #c8102e; }
.hy-product-card h3 { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.hy-product-card p { font-size: 13px; color: #999; line-height: 1.8; }
.hy-product-card .more { display: inline-block; margin-top: 15px; color: #c8102e; font-size: 13px; }
.hy-product-card .more:hover { color: #ff6b7f; }
.hy-products-btn { text-align: center; margin-top: 30px; }
.hy-products-btn a { display: inline-block; padding: 12px 40px; border: 2px solid #c8102e; color: #fff; font-size: 14px; border-radius: 4px; }
.hy-products-btn a:hover { background: #c8102e; }

/* ============ CERTIFICATIONS ============ */
.hy-cert { background: #fff; padding: 60px 0; }
.hy-cert-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; }
.hy-cert-item { width: 200px; text-align: center; }
.hy-cert-item .pic { height: 220px; display: flex; align-items: center; justify-content: center; overflow: hidden; background: #fff; border: 1px solid #e6e6e6; border-radius: 4px; padding: 10px; }
.hy-cert-item .pic img { max-width: 100%; max-height: 200px; object-fit: contain; display: block; }
.hy-cert-item .name { margin-top: 12px; font-size: 14px; font-weight: 700; color: #333; }

/* ============ CONCEPT / SPLIT ============ */
.hy-concept { display: flex; align-items: stretch; width: 100%; }
.hy-concept-img { flex: 0 0 48%; position: relative; overflow: hidden; background: #fff; }
.hy-concept-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hy-concept-text { flex: 1; display: flex; align-items: center; padding: 60px 8% 60px 5%; }
.hy-concept-text h2 { font-size: 36px; font-weight: 300; color: #333; margin: 0 0 16px; letter-spacing: 2px; }
.hy-concept-text .sub { color: #4a90d9; font-size: 15px; margin: 0 0 24px; padding-bottom: 16px; border-bottom: 1px solid #e0e0e0; }
.hy-concept-text p { color: #666; font-size: 15px; line-height: 1.8; }

/* ============ GREETING LIST ============ */
.hy-ys { margin: 0; }
.hy-ys > li { display: flex; align-items: center; }
.hy-ys > li .pic { flex: 0 0 50%; }
.hy-ys > li .pic img { width: 100%; display: block; }
.hy-ys > li .text { flex: 1; padding: 40px 5%; }
.hy-ys > li .text h2 { font-size: 24px; font-weight: 700; color: #333; margin-bottom: 14px; }
.hy-ys > li .text h3 { font-size: 18px; color: #333; font-weight: 700; line-height: 1.7; margin-bottom: 12px; }
.hy-ys > li .text p { color: #666; font-size: 15px; line-height: 1.9; }
.hy-ys > li:nth-child(even) .pic { order: 2; }

/* ============ PLANT / FAQ CARDS ============ */
.hy-cards { display: flex; gap: 30px; padding: 60px 0; }
.hy-card { flex: 1; position: relative; overflow: hidden; border-radius: 6px; min-height: 360px; display: flex; align-items: flex-end; }
.hy-card .bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hy-card .txt { position: relative; z-index: 2; color: #fff; padding: 30px; background: linear-gradient(to top, rgba(0,0,0,0.7), transparent); width: 100%; }
.hy-card .txt h2 { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.hy-card .txt h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.hy-card .txt p { font-size: 13px; color: #e6e6e6; line-height: 1.8; }

/* ============ FEATURE ============ */
.hy-feature { padding: 60px 0; text-align: center; }
.hy-feature .section-title strong { display: block; font-size: 28px; color: #222; }
.hy-feature .txt { color: #c8102e; font-size: 17px; margin: 12px 0; }
.hy-feature .desc p { color: #666; font-size: 15px; line-height: 2; max-width: 800px; margin: 6px auto; }
.hy-feature .btns { margin-top: 24px; }
.hy-feature .btns a { display: inline-block; padding: 12px 32px; border: 1px solid #1a2a4a; color: #1a2a4a; border-radius: 4px; }
.hy-feature .btns a:hover { background: #1a2a4a; color: #fff; }

/* ============ NEWS ============ */
.hy-news { background: #f8f9fa; padding: 60px 0; }
.hy-news-list { column-count: 2; column-gap: 40px; margin-top: 20px; }
.hy-news-item { break-inside: avoid; border-bottom: 1px solid #e0e0e0; padding: 12px 0; }
.hy-news-item a { display: flex; align-items: center; }
.hy-news-item .date { color: #999; font-size: 13px; margin-right: 15px; white-space: nowrap; }
.hy-news-item .title { font-size: 14px; color: #333; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hy-news-item a:hover .title { color: #c8102e; }
.hy-news-btn { text-align: center; margin-top: 28px; }
.hy-news-btn a { display: inline-block; padding: 12px 32px; border: 1px solid #1a2a4a; color: #1a2a4a; border-radius: 4px; }
.hy-news-btn a:hover { background: #1a2a4a; color: #fff; }

/* ============ PARTNERS ============ */
.hy-partner { padding: 40px 0 60px; }
.hy-partner .swiper-slide { background: #fff; border: 1px solid #eee; border-radius: 8px; height: 120px; display: flex; align-items: center; justify-content: center; padding: 20px; transition: box-shadow .3s; }
.hy-partner .swiper-slide:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.hy-partner .img-center { width: 100%; text-align: center; }
.hy-partner .img-center img { max-width: 100%; max-height: 80px; object-fit: contain; margin: 0 auto; }

/* ============ FOOTER ============ */
.hy-footer { background: #0f1a30; color: #cfd6e4; }
.hy-footer .hy-f-contact { border-bottom: 1px solid rgba(255,255,255,0.1); padding: 18px 0; }
.hy-footer .hy-f-contact-con { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.hy-footer .hy-f-tel { font-size: 22px; font-weight: 700; color: #fff; }
.hy-footer .hy-f-tel i { margin-right: 8px; }
.hy-footer .hy-f-contact .hy-f-btns a { display: inline-block; background: #c8102e; color: #fff; padding: 9px 22px; border-radius: 3px; margin-left: 10px; }
.hy-footer .hy-f-btns .top { background: transparent; border: 1px solid rgba(255,255,255,0.4); }
.hy-footer .hy-f-mid { padding: 40px 0 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
.hy-footer .hy-f-logo img { height: 50px; }
.hy-footer .hy-f-nav { display: flex; flex-wrap: wrap; gap: 10px 26px; }
.hy-footer .hy-f-nav a { color: #cfd6e4; font-size: 14px; }
.hy-footer .hy-f-nav a:hover { color: #fff; }
.hy-footer .hy-f-info { font-size: 13px; color: #9aa4b8; line-height: 1.9; margin-top: 12px; }
.hy-footer .hy-copyright { border-top: 1px solid rgba(255,255,255,0.1); padding: 16px 0; text-align: center; font-size: 13px; color: #9aa4b8; }

/* ============ RESPONSIVE ============ */
@media (max-width: 992px) {
  .hy-header { display: none; }
  .hy-m-top { display: flex; }
  .hy-m-nav { display: none; }
  .hy-banner { height: 300px; }
  .hy-product-card { width: 45%; }
  .hy-concept { flex-direction: column; }
  .hy-concept-img { flex: 0 0 auto; width: 100%; }
  .hy-concept-img img { height: auto; max-height: 400px; }
  .hy-concept-text { padding: 30px 20px; }
  .hy-concept-text h2 { font-size: 28px; }
  .hy-ys > li { flex-direction: column; }
  .hy-ys > li .pic, .hy-ys > li .text { flex: 0 0 auto; width: 100%; }
  .hy-ys > li:nth-child(even) .pic { order: 0; }
  .hy-cards { flex-direction: column; }
  .hy-card { min-height: 260px; }
  .hy-news-list { column-count: 1; }
  .hy-cert-item { width: 45%; }
  .hy-about-icons { gap: 30px; }
}
@media (max-width: 560px) {
  .hy-product-card { width: 100%; }
  .hy-sec-title h2 { font-size: 26px; }
  .hy-about-icon .ico { width: 56px; height: 56px; }
  .hy-banner { height: 240px; }
}