@charset "utf-8";
@font-face
{font-family: OpenSans;
src: url('OpenSans.ttf')}
@font-face
{font-family: Bold;
src: url('OpenSans-Bold.ttf')}
@font-face
{font-family: ExtraBold;
src: url('OpenSans-Extrabold.ttf')}
@font-face
{font-family: Semibold;
src: url('OpenSans-Semibold.ttf')}
@font-face {
  font-family: 'iconfont';
  src: url('iconfont/iconfont.woff2?t=1705108683799') format('woff2'),
       url('iconfont/iconfont.woff?t=1705108683799') format('woff'),
       url('iconfont/iconfont.ttf?t=1705108683799') format('truetype');
}
.iconfont {
  font-family: "iconfont" !important;
  font-size: inherit;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

    /* ===== RESET & BASE ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { font-size: 17px; scroll-behavior: smooth; }
    body { font-family: 'OpenSans', Arial, sans-serif; color: #222; background: #fff; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    img { max-width: 100%; display: block; }
    button { cursor: pointer; border: none; outline: none; }

    /* ===== VARIABLES ===== */
    :root {
      --red: #D60011;
      --red-dark: #a80016;
      --gray-bg: #f5f5f5;
      --gray-light: #e8e8e8;
      --gray-mid: #999;
      --text-dark: #1a1a1a;
      --text-mid: #444;
      --text-light: #777;
      --white: #ffffff;
      --max-w: 1360px;
      --radius: 6px;
      --shadow: 0 2px 12px rgba(0,0,0,0.10);
    }

    /* ===== UTILITY ===== */
    .container {
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .section-sub {
      font-size: 0.95rem;
      color: var(--text-light);
      margin-bottom: 36px;
      max-width: 620px;
    }
    .btn-red {
      background: var(--red);
      color: #fff;
      padding: 12px 28px;
      border-radius: var(--radius);
      font-size: 1rem;
      font-weight: 600;
      transition: background 0.2s;
      display: inline-block;
    }
    .btn-red:hover { background: var(--red-dark); }

    /* ===== TOP BAR ===== */
    .top-bar {
      background: #fff;
      border-bottom: 1px solid var(--gray-light);
      padding: 8px 0;
      font-size: 0.88rem;
      color: var(--text-light);
      position: sticky;
      z-index: 2000;
      top: 0;
    }
    .top-bar-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-bar-left { display: flex; align-items: center; gap: 6px; }
    .top-bar-logo {
      display: flex;
      align-items: center;
      gap: 6px;
      font-weight: 800;
      font-size: 1.4rem;
      color: var(--red);
      letter-spacing: 1px;
    }
    .top-bar-logo span.logo-icon {
      width: 32px; height: 32px;
      background: var(--red);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 0.85rem; font-weight: 900;
    }
    .search-bar {
      display: flex;
      align-items: center;
      border: 1px solid var(--gray-light);
      border-radius: 4px;
      overflow: hidden;
      margin-left: 16px;
    }
    .search-bar input {
      border: none; outline: none;
      padding: 6px 12px;
      font-size: 0.85rem;
      width: 220px;
      color: var(--text-mid);
    }
    .search-bar button {
      background: var(--red);
      color: #fff;
      padding: 6px 14px;
      font-size: 0.85rem;
      font-weight: 600;
    }
    .top-bar-right {
      display: flex; align-items: center; gap: 16px;
      font-size: 0.88rem; color: var(--text-mid);
    }
    .top-bar-right a:hover { color: var(--red); }
    .btn-rfq {
      background: var(--red);
      color: #fff;
      padding: 5px 14px;
      border-radius: 4px;
      font-size: 0.88rem;
      font-weight: 600;
    }
    .btn-rfq:hover { background: var(--red-dark); }

    /* ===== NAV ===== */
    .main-nav {
      background: #fff;
      border-bottom: 2px solid var(--gray-light);
      /* position: sticky;  */
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      gap: 0;
      overflow-x: auto;
    }
    .nav-inner a {
      padding: 14px 18px;
      font-size: 1rem;
      font-weight: 500;
      color: var(--text-mid);
      white-space: nowrap;
      border-bottom: 3px solid transparent;
      transition: color 0.2s, border-color 0.2s;
    }
    .nav-inner a:hover, .nav-inner a.active {
      color: var(--red);
      border-bottom-color: var(--red);
    }

    /* ===== HERO ===== */
    .hero {
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #1a1a1a;
    }
    .hero-img-wrap {
    position: absolute;
    inset: 0;
    overflow: hidden;
    }
    .hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    }
    .hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(20, 12, 4, 0.01);
    }
    .idx-ban .swiper-container{height: 100%;}
    .hero-inner {
      position: relative;
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 32px;
      width: 100%;
      max-width: var(--max-w);
      margin: 0 auto;
      padding: 60px 20px;
      flex-wrap: wrap;
      z-index: 1000;
    }
    .hero-content { flex: 1; min-width: 280px; }
    .hero-content h1 {
      font-size: 3rem;
      font-weight: 800;
      color: #fff;
      line-height: 1.25;
      margin-bottom: 28px;
    }
    .hero-features { display: flex; flex-direction: column; gap: 10px; }
    .hero-features li {
      display: flex; align-items: center; gap: 10px;
      color: #f0f0f0; font-size: 1.15rem;
    }
    .hero-features li::before {
      content: '✓';
      width: 20px; height: 20px;
      background: var(--red);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      font-size: 0.7rem; color: #fff; font-weight: 700;
      flex-shrink: 0;
    }

    /* Leave Message Card */
    .leave-msg-card {
      background: #fff;
      border-radius: 8px;
      padding: 28px 24px;
      width: 400px;
      flex-shrink: 0;
      box-shadow: 0 4px 24px rgba(0,0,0,0.18);
    }
    .leave-msg-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--text-dark);
    }
    .leave-msg-card p {
      font-size: 0.88rem;
      color: var(--text-light);
      margin-bottom: 16px;
    }
    .leave-msg-card input,
    .leave-msg-card textarea {
      width: 100%;
      border: 1px solid var(--gray-light);
      border-radius: 4px;
      padding: 9px 12px;
      font-size: 1rem;
      color: var(--text-mid);
      margin-bottom: 10px;
      outline: none;
      transition: border-color 0.2s;
      font-family: inherit;
    }
    .leave-msg-card input:focus,
    .leave-msg-card textarea:focus { border-color: var(--red); }
    .leave-msg-card textarea { resize: vertical; min-height: 110px; }
    .leave-msg-card button {
      width: 100%;
      background: var(--red);
      color: #fff;
      padding: 12px;
      border-radius: 4px;
      font-size: 1rem;
      font-weight: 700;
      letter-spacing: 1px;
      transition: background 0.2s;
    }
    .leave-msg-card button:hover { background: var(--red-dark); }

    /* ===== STATS BAR ===== */
    .stats-bar-outer {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: center;
  /* 上浮高度，根据视觉调整 */
  margin-top: -40px;
  margin-bottom: 0;
  padding: 0 20px;
}

/* 内层卡片：版心宽度、白底、圆角、阴影 */
.stats-bar {
  width: 100%;
  max-width: var(--max-w);
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.13);
  padding: 28px 32px;
}

/* 原 .stats-bar 里的 .container 包裹已去掉，直接用 .stats-inner */
.stats-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 16px;
}
.stat-item {
  text-align: center;
  padding: 0 16px;
  border-right: 1px solid var(--gray-light);
  flex: 1;
  min-width: 120px;
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--red);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num .counter{font-style: normal;}
.stat-label {
  font-size: 0.78rem;
  color: var(--text-light);
  line-height: 1.4;
}

    /* ===== COLLABORATION CASES ===== */
    .collab-section {
      padding: 64px 0 48px;
      background: #fff;
    }
    .collab-layout {
      display: flex;
      gap: 24px;
      align-items: flex-start;
      flex-wrap: wrap;
    }
    .collab-image-wrap {
      flex: 1.2;
      min-width: 280px;
      position: relative;
      border-radius: 8px;
      overflow: hidden;
    }
    .collab-image-wrap img {
      width: 100%;
      /* height: 320px; */
      object-fit: cover;
      display: block;
    }
    .collab-img-label {
      position: absolute;
      bottom: 0; left: 0; right: 0;
      background: rgba(0,0,0,0.55);
      color: #fff;
      padding: 10px 16px;
      font-size: 1rem;
      font-weight: 600;
    }
    .collab-products {
  flex: 1;
  min-width: 240px;
  display: flex;
  flex-direction: column;
  gap: 0;                    /* 手风琴紧凑排列 */
  border: 1px solid var(--gray-light);
  border-radius: 8px;
  overflow: hidden;
}

/* 每一项 */
.prod-accordion {
  border-bottom: 1px solid var(--gray-light);
  background: #fff;
  transition: background 0.2s;
}
.prod-accordion:last-child { border-bottom: none; }

/* 展开状态：header 变红 */
.prod-accordion.open { background: #fff; }

/* Header 行 */
.prod-acc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s;
}
.prod-acc-header:hover { background: #fef2f2; }

/* 展开时 header 背景红色 */
.prod-accordion.open .prod-acc-header {
  background: var(--red);
}
.prod-accordion.open .p-num,
.prod-accordion.open .p-name,
.prod-accordion.open .p-arrow {
  color: #fff;
}

.p-num {
  width: 22px; height: 22px;
  background: var(--gray-bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
  color: var(--text-light);
  flex-shrink: 0;
  transition: background 0.2s, color 0.2s;
}
.prod-accordion.open .p-num {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

.p-name {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: color 0.2s;
}

.p-arrow {
  font-size: 1rem;
  color: var(--text-light);
  transition: transform 0.25s, color 0.2s;
  flex-shrink: 0;
}
.prod-accordion.open .p-arrow {
  transform: rotate(180deg);
  color: #fff;
}

/* 内容区：max-height 动画 */
.prod-acc-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.prod-accordion.open .prod-acc-body {
  max-height: 300px;
}

/* 内容内部 */
.prod-acc-inner {
  padding: 14px 16px 16px 48px;
  background: #fff9f9;
  border-top: 1px solid #fde8e8;
}
.prod-acc-subtitle {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.prod-acc-inner ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.prod-acc-inner ul li {
  font-size: 0.88rem;
  color: var(--text-mid);
  display: flex;
  align-items: flex-start;
  gap: 6px;
  line-height: 1.5;
}
.prod-acc-inner ul li::before {
  content: '•';
  color: var(--red);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: -1px;
}

    /* ===== COOPERATION PROJECTS ===== */
    .coop-section {
      padding: 64px 0;
      background: var(--gray-bg);
    }
    .coop-cards {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .coop-card {
      flex: 1;
      min-width: 220px;
      background: #fff;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform 0.2s, box-shadow 0.2s;
    }
    .coop-card:hover {
      transform: scale(1.04);

      /* transform: translateY(-4px); */
      box-shadow: 0 8px 24px rgba(0,0,0,0.13);
    }
    .coop-card img {
      width: 100%; height: 260px;
      object-fit: cover;
    }
    .coop-card-body { padding: 16px; }
    .coop-card-body h4 {
      font-size: 0.92rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-dark);
    }
    .coop-card-body p {
      font-size: 0.8rem;
      color: var(--text-light);
      line-height: 1.55;
    }

    /* ===== TESTIMONIALS ===== */
    .testimonials-section {
      background: var(--red);
      padding: 64px 0;
    }
    .testimonials-section .section-title { color: #fff; }
    .testimonials-section .section-sub { color: rgba(255,255,255,0.75); }
    .testimonials-cards {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .testimonial-card {
      flex: 1;
      min-width: 240px;
      background: rgba(255,255,255,0.12);
      border-radius: 10px;
      padding: 24px 20px;
      color: #fff;
      position: relative;
    }
    .stars {
      display: flex; gap: 3px; margin-bottom: 14px;
    }
    .star {
      width: 22px; height: 22px;
      background: #FFD700;
      clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    }
    .star.half { opacity: 0.5; }
    .testimonial-card blockquote {
      font-size: 1rem;
      line-height: 1.65;
      color: rgba(255,255,255,0.92);
      margin-bottom: 16px;
      font-style: italic;
    }
    .testimonial-card .project-tag {
      font-size: 0.8rem;
      font-weight: 700;
      color: rgba(255,255,255,0.7);
      border-top: 1px solid rgba(255,255,255,0.2);
      padding-top: 12px;
    }

    /* ===== CERTIFICATE ===== */
    .cert-section {
      padding: 64px 0;
      background: #fff;
    }
    .cert-section .section-title,
    .cert-section .section-sub { text-align: center; margin-left: auto; margin-right: auto; }
    .cert-cards {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
      justify-content: center;
    }
    .cert-card {
      width: 23%;
      border: 1px solid var(--gray-light);
      border-radius: 8px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform 0.2s;
      background: #fff;
    }
    .cert-card:hover { transform: scale(1.04); }
    .cert-card-img {
      /* height: 140px; */
      display: flex; align-items: center; justify-content: center;
      background: var(--gray-bg);
      /* padding: 16px; */
    }
    .cert-card-img .cert-logo {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--text-mid);
      letter-spacing: 1px;
    }
    .cert-card-body {
        display: none;
      padding: 10px 12px;
      font-size: 0.78rem;
      color: var(--text-light);
      text-align: center;
      line-height: 1.4;
    }

    /* ===== FAQ ===== */
    .faq-section {
      padding: 64px 0;
      background: var(--gray-bg);
    }
    .faq-section .section-title,
    .faq-section .section-sub { text-align: center; margin-left: auto; margin-right: auto; }
    .faq-list { display: flex; flex-direction: column; gap: 10px; }
    .faq-item {
      background: #fff;
      border-radius: 6px;
      border: 1px solid var(--gray-light);
      overflow: hidden;
      box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      cursor: pointer;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-dark);
      user-select: none;
      transition: background 0.15s;
    }
    .faq-question:hover { background: #fafafa; }
    .faq-question .q-badge {
      width: 24px; height: 24px;
      background: var(--red);
      border-radius: 50%;
      color: #fff;
      font-size: 0.78rem;
      font-weight: 700;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      margin-right: 12px;
    }
    .faq-question-text { flex: 1; }
    .faq-arrow {
      font-size: 1rem;
      color: var(--text-light);
      transition: transform 0.25s;
      flex-shrink: 0;
    }
    .faq-item.open .faq-arrow { transform: rotate(180deg); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s;
      padding: 0 20px 0 56px;
      font-size: 1rem;
      color: var(--text-mid);
      line-height: 1.7;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 20px 16px 56px;
    }

    /* ===== FOOTER ===== */
    .footer {
      background: #1a1a1a;
      color: #ccc;
      padding: 48px 0 24px;
    }
    .footer-top {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
      margin-bottom: 36px;
    }
    .footer-col { flex: 1; min-width: 160px; }
    .footer-col h5 {
      font-size: 0.92rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-col ul { display: flex; flex-direction: column; gap: 7px; }
    .footer-col ul li a {
      font-size: 0.88rem;
      color: #aaa;
      transition: color 0.2s;
    }
    .footer-col ul li a:hover { color: var(--red); }
    .footer-subscribe h5 { color: #fff; font-size: 0.92rem; font-weight: 700; margin-bottom: 14px; }
    .footer-subscribe .sub-row {
      display: flex; gap: 8px; flex-wrap: wrap;
    }
    .footer-subscribe input {
      flex: 1; min-width: 160px;
      padding: 9px 12px;
      border: 1px solid #444;
      background: #2a2a2a;
      color: #fff;
      border-radius: 4px;
      font-size: 0.85rem;
      outline: none;
    }
    .footer-subscribe input:focus { border-color: var(--red); }
    .footer-subscribe button {
      background: var(--red);
      color: #fff;
      padding: 9px 18px;
      border-radius: 4px;
      font-size: 0.85rem;
      font-weight: 600;
      transition: background 0.2s;
    }
    .footer-subscribe button:hover { background: var(--red-dark); }
    .footer-contact { margin-top: 12px; font-size: 0.8rem; color: #888; }
    .footer-contact a { color: #aaa; }
    .footer-contact a:hover { color: var(--red); }
    .footer-brands {
      border-top: 1px solid #333;
      padding-top: 24px;
      display: flex;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
    }
    .footer-brands span { font-size: 0.98rem; color: #fff; }
    .brand-badge {
      padding: 5px 0px;
      /* border: 1px solid #444; */
      border-radius: 4px;
      font-size: 1rem;
      font-weight: 700;
      color: #ccc;
    }
    .brand-badge.oyh { /* color: var(--red); border-color: var(--red);  */}
    .footer-bottom {
      border-top: 1px solid #2a2a2a;
      margin-top: 24px;
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 0.78rem;
      color: #666;
    }
    .footer-bottom a { color: #888; }
    .footer-bottom a:hover { color: var(--red); }

    .footer .social{display: flex;justify-content: space-between;}
    .footer .social a{font-size: 1.2rem;margin-left: 20px;}
    .footer .social a:hover{color:#D60011;}

    .whatsappbox{position: fixed;right: 5px;bottom: 20%;width: 120px;z-index: 1000;}
    /* ===== MOBILE MENU ===== */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 4px;
    }
    .hamburger span {
      display: block;
      width: 24px; height: 2px;
      background: var(--text-mid);
      border-radius: 2px;
      transition: all 0.3s;
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 900px) {
      .hero-content h1 { font-size: 1.8rem; }
      .leave-msg-card { width: 100%; }
      .stat-item { min-width: 100px; }
    }

    @media (max-width: 680px) {
      .top-bar-left .search-bar { display: none; }
      .hamburger { display: flex; }
      .nav-inner { flex-direction: column; display: none; }
      .nav-inner.open { display: flex; }
      .nav-inner a { padding: 12px 20px; border-bottom: 1px solid var(--gray-light); border-right: none; }
      .hero { min-height: auto; }
      .hero-inner { padding: 36px 16px; }
      .hero-content h1 { font-size: 1.5rem; }
      .section-title { font-size: 1.5rem; }
      .stat-num { font-size: 1.5rem; }
      .coop-card { min-width: 100%; }
      .testimonial-card { min-width: 100%; }
      .cert-card { width: 150px; }
      .footer-col { min-width: 140px; }
      .stats-bar-outer { margin-top: -24px; padding: 0 12px; }
      .stats-bar { padding: 20px 16px; border-radius: 8px; }
    }

    @media (max-width: 480px) {
      /* .collab-image-wrap img { height: 220px; } */
      .stats-bar-outer { margin-top: -16px; }
        .stat-item {
            border-right: none;
            border-bottom: 1px solid var(--gray-light);
            padding: 12px 0;
        }
        .stat-item:last-child { border-bottom: none; }
    }