/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0A4D8C;
    --primary-light: #1565C0;
    --primary-dark: #063B6E;
    --accent: #00B4D8;
    --accent-glow: rgba(0, 180, 216, 0.15);
    --text-dark: #1a2332;
    --text-body: #4a5568;
    --text-light: #8896a8;
    --bg-white: #ffffff;
    --bg-light: #f7f9fc;
    --bg-gray: #eef2f7;
    --border: #e2e8f0;
    --shadow-sm: 0 2px 8px rgba(10, 77, 140, 0.06);
    --shadow-md: 0 8px 30px rgba(10, 77, 140, 0.10);
    --shadow-lg: 0 20px 60px rgba(10, 77, 140, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Navbar ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.navbar.scrolled { box-shadow: var(--shadow-sm); }
.nav-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    height: 72px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 14px; }
.nav-logo .logo-img {
    height: 64px; width: auto; display: block;
    transition: var(--transition);
}
.nav-logo .logo-img-footer {
    height: 88px; width: auto; display: block;
}
.nav-logo:hover .logo-img { opacity: 0.85; }
/* Fallback styles for old logo-icon/logo-text (used in product-detail.html) */
.nav-logo .logo-icon {
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: 20px; letter-spacing: -1px;
}
.nav-logo .logo-text { display: flex; flex-direction: column; }
.nav-logo .logo-text .cn { font-size: 20px; font-weight: 700; color: var(--text-dark); letter-spacing: 0.5px; }
.nav-logo .logo-text .en { font-size: 12px; color: var(--text-light); letter-spacing: 1.5px; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
.nav-links a { font-size: 15px; color: var(--text-body); font-weight: 500; position: relative; transition: var(--transition); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -6px; left: 0; width: 0; height: 2px;
    background: var(--primary); border-radius: 2px; transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after { width: 100%; }
.nav-cta {
    background: var(--primary); color: #fff !important;
    padding: 10px 24px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; transition: var(--transition);
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(10, 77, 140, 0.3); }
.nav-cta::after { display: none; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text-dark); border-radius: 2px; transition: var(--transition); }

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--accent); color: #fff;
    padding: 14px 32px; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 600; transition: var(--transition);
    border: none; cursor: pointer;
}
.btn-primary:hover { background: #00a0c4; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 180, 216, 0.35); }
.btn-outline {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: #fff;
    padding: 14px 32px; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 600;
    border: 1.5px solid rgba(255, 255, 255, 0.3); cursor: pointer; transition: var(--transition);
}
.btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

/* ===== Section Common ===== */
section { padding: 100px 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-tag {
    display: inline-block; font-size: 13px; font-weight: 600; color: var(--accent);
    letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px;
    padding: 6px 16px; background: var(--accent-glow); border-radius: 50px;
}
.section-title { font-size: 36px; font-weight: 800; color: var(--text-dark); line-height: 1.3; margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--text-light); line-height: 1.7; }

/* ===== Hero (Homepage) ===== */
.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center;
    background: #063B6E url('../images/hero/hero-bg.png') center/cover no-repeat;
    overflow: hidden; padding-top: 72px;
}
.hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background:
        linear-gradient(110deg, rgba(6, 59, 110, 0.95) 0%, rgba(10, 77, 140, 0.85) 35%, rgba(21, 101, 192, 0.45) 70%, rgba(0, 180, 216, 0.15) 100%),
        radial-gradient(circle at 20% 50%, rgba(0, 180, 216, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.12) 0%, transparent 50%);
}
.hero::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.3));
    -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.3));
}
.hero-content {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
    align-items: center; width: 100%;
}
.hero-text .badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 18px; border-radius: 50px;
    font-size: 13px; color: rgba(255, 255, 255, 0.9);
    margin-bottom: 28px; backdrop-filter: blur(6px);
}
.hero-text .badge .dot {
    width: 8px; height: 8px; background: var(--accent);
    border-radius: 50%; animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-text h1 {
    font-size: 48px; font-weight: 800; color: #fff;
    line-height: 1.25; margin-bottom: 24px; letter-spacing: -0.5px;
}
.hero-text h1 .highlight {
    background: linear-gradient(135deg, var(--accent), #80dffa);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-text .subtitle {
    font-size: 17px; color: rgba(255, 255, 255, 0.75);
    line-height: 1.8; margin-bottom: 40px; max-width: 520px;
}
.hero-buttons { display: flex; gap: 16px; }
.hero-visual { position: relative; height: 460px; }
.hero-card {
    position: absolute; background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius); padding: 24px;
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    transition: var(--transition);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}
.hero-card:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(0, 180, 216, 0.5); transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 180, 216, 0.25);
}
.hero-card .card-icon {
    width: 48px; height: 48px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px; font-size: 24px;
}
.hero-card .card-title { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.hero-card .card-desc { color: rgba(255, 255, 255, 0.6); font-size: 13px; line-height: 1.5; }
.hero-card.c1 { top: 0; left: 0; width: 240px; }
.hero-card.c1 .card-icon { background: rgba(0, 180, 216, 0.2); color: var(--accent); }
.hero-card.c2 { top: 40px; right: 0; width: 220px; }
.hero-card.c2 .card-icon { background: rgba(124, 179, 66, 0.2); color: #8bc34a; }
.hero-card.c3 { bottom: 80px; left: 40px; width: 230px; }
.hero-card.c3 .card-icon { background: rgba(255, 167, 38, 0.2); color: #ffa726; }
.hero-card.c4 { bottom: 0; right: 30px; width: 210px; }
.hero-card.c4 .card-icon { background: rgba(186, 104, 200, 0.2); color: #ba68c8; }

.hero-stats { position: absolute; bottom: -100px; left: 0; right: 0; z-index: 3; }
.stats-bar {
    background: #fff; border-radius: var(--radius);
    box-shadow: var(--shadow-lg); padding: 36px 48px;
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.stat-item { text-align: center; position: relative; }
.stat-item:not(:last-child)::after {
    content: ''; position: absolute; right: -16px; top: 50%;
    transform: translateY(-50%); width: 1px; height: 40px; background: var(--border);
}
.stat-item .num { font-size: 36px; font-weight: 800; color: var(--primary); line-height: 1; }
.stat-item .num .suffix { font-size: 18px; color: var(--accent); }
.stat-item .label { font-size: 14px; color: var(--text-light); margin-top: 8px; }

/* ===== Products Grid (Homepage) ===== */
.products { background: var(--bg-light); }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
    background: #fff; border-radius: var(--radius);
    overflow: hidden; border: 1px solid var(--border);
    transition: var(--transition); cursor: pointer;
    position: relative;
}
.product-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0); transform-origin: left; transition: var(--transition);
    z-index: 3;
}
.product-card:hover { border-color: transparent; box-shadow: var(--shadow-md); transform: translateY(-6px); }
.product-card:hover::before { transform: scaleX(1); }
.product-img-wrap {
    position: relative; height: 200px; overflow: hidden;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
}
.product-img-wrap img {
    width: 100%; height: 100%; object-fit: contain; padding: 16px;
    transition: var(--transition);
    position: relative; z-index: 2;
}
.product-card:hover .product-img-wrap img { transform: scale(1.08); }
.product-icon-badge {
    position: absolute; bottom: 12px; right: 12px;
    width: 36px; height: 36px; border-radius: 10px;
    background: rgba(10, 77, 140, 0.9); color: #fff;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(4px); z-index: 3;
    box-shadow: 0 4px 12px rgba(10, 77, 140, 0.3);
    transition: var(--transition);
}
.product-card:hover .product-icon-badge { background: var(--accent); transform: scale(1.1); }
.product-body { padding: 24px 24px 28px; }
.product-body h3 { font-size: 19px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.product-body p { font-size: 14px; color: var(--text-light); line-height: 1.65; margin-bottom: 20px; }
.product-body .more-link {
    font-size: 14px; color: var(--primary); font-weight: 600;
    display: inline-flex; align-items: center; gap: 6px; transition: var(--transition);
}
.product-card:hover .more-link { gap: 10px; }

/* ===== Industries (Homepage) - image card styles at bottom ===== */
.industries-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

/* ===== Selection Guide (Homepage) ===== */
.guide { background: var(--bg-light); }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.guide-card {
    background: #fff; border-radius: var(--radius);
    padding: 40px 32px; text-align: center;
    border: 1px solid var(--border); transition: var(--transition); cursor: pointer;
}
.guide-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--accent); }
.guide-card .guide-num {
    width: 56px; height: 56px; margin: 0 auto 24px;
    border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 22px; font-weight: 800;
}
.guide-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.guide-card p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 20px; }
.guide-card .guide-link { font-size: 14px; color: var(--primary); font-weight: 600; }

/* ===== About (Homepage) ===== */
.about { position: relative; overflow: hidden; }
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }
.about-text .section-tag, .about-text .section-title { text-align: left; }
.about-text .section-header { text-align: left; margin: 0 0 32px; }
.about-text p { font-size: 16px; color: var(--text-body); line-height: 1.9; margin-bottom: 24px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 36px; }
.about-feature { display: flex; align-items: flex-start; gap: 14px; }
.about-feature .check {
    width: 24px; height: 24px; border-radius: 6px;
    background: var(--accent-glow); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 14px; font-weight: 700; margin-top: 2px;
}
.about-feature .ft-text { font-size: 14px; color: var(--text-body); font-weight: 500; }
.about-visual { position: relative; }
.about-img-main {
    border-radius: var(--radius); overflow: hidden; margin-bottom: 16px;
    box-shadow: var(--shadow-md); height: 260px;
}
.about-img-main img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.about-img-main:hover img { transform: scale(1.05); }
.about-img-box {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius); padding: 36px; position: relative; overflow: hidden;
}
.about-img-box::before {
    content: ''; position: absolute; top: -50%; right: -30%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
}
.about-img-box .box-stat { position: relative; margin-bottom: 32px; }
.about-img-box .box-stat:last-child { margin-bottom: 0; }
.about-img-box .box-stat .bs-num { font-size: 40px; font-weight: 800; color: #fff; line-height: 1; }
.about-img-box .box-stat .bs-num .suffix { font-size: 20px; color: var(--accent); }
.about-img-box .box-stat .bs-label { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }
.about-img-box .box-divider { height: 1px; background: rgba(255, 255, 255, 0.1); margin: 28px 0; }

/* ===== News (Homepage) ===== */
.news { background: var(--bg-light); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition); cursor: pointer;
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card .news-img {
    height: 200px; position: relative; overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.news-card .news-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: var(--transition);
}
.news-card:hover .news-img img { transform: scale(1.08); }
.news-card .news-img::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 60px;
    background: linear-gradient(to top, rgba(255,255,255,1) 0%, transparent 100%);
}
.news-card .news-body { padding: 28px 24px; }
.news-card .news-date { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 12px; }
.news-card h3 {
    font-size: 16px; font-weight: 700; color: var(--text-dark);
    line-height: 1.5; margin-bottom: 12px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-card .news-excerpt {
    font-size: 13px; color: var(--text-light); line-height: 1.6;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===== CTA Banner ===== */
.cta-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    position: relative; overflow: hidden;
}
.cta-bg-img {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover; background-position: center;
    opacity: 0.35;
}
.cta-banner::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}
.cta-content { position: relative; text-align: center; }
.cta-content h2 { font-size: 36px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-content p { font-size: 17px; color: rgba(255, 255, 255, 0.7); margin-bottom: 36px; }
.cta-content .btn-primary { background: #fff; color: var(--primary); }
.cta-content .btn-primary:hover { background: var(--accent); color: #fff; }

/* ===== Contact (Homepage V2) ===== */
.contact-section {
    background:
        radial-gradient(circle at 0% 0%, rgba(10, 77, 140, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(0, 180, 216, 0.04) 0%, transparent 50%),
        var(--bg-light);
}
.contact-layout {
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: 40px; align-items: start;
}

/* Left info column */
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.info-card {
    background: #fff; border-radius: 12px; padding: 20px 24px;
    display: flex; align-items: center; gap: 20px;
    border: 1px solid var(--border); transition: var(--transition);
    position: relative; overflow: hidden;
}
.info-card::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transform: scaleY(0); transform-origin: top; transition: transform 0.3s ease;
}
.info-card:hover { box-shadow: var(--shadow-md); transform: translateX(4px); border-color: transparent; }
.info-card:hover::before { transform: scaleY(1); }
.info-card.primary {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-color: transparent;
}
.info-card.primary::before { display: none; }
.info-card.primary .info-label,
.info-card.primary .info-note { color: rgba(255, 255, 255, 0.7); }
.info-card.primary .info-value { color: #fff; font-size: 22px; }
.info-card.primary .info-icon {
    background: rgba(255, 255, 255, 0.18); color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
}
.info-icon {
    width: 52px; height: 52px; border-radius: 12px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center; font-size: 22px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
    color: var(--primary);
}
.info-body { flex: 1; min-width: 0; }
.info-label {
    font-size: 12px; color: var(--text-light);
    text-transform: uppercase; letter-spacing: 1px;
    font-weight: 600; margin-bottom: 4px;
}
.info-value {
    font-size: 18px; font-weight: 700; color: var(--text-dark);
    margin-bottom: 2px; display: block;
    font-family: 'Courier New', monospace;
}
a.info-value { transition: var(--transition); }
a.info-value:hover { color: var(--primary); }
.info-card.primary a.info-value:hover { color: var(--accent); }
.info-note { font-size: 12px; color: var(--text-light); }

/* QR Card */
.qr-card {
    background: #fff; border-radius: 12px; padding: 24px;
    display: flex; align-items: center; gap: 20px;
    border: 1px solid var(--border); transition: var(--transition);
}
.qr-card:hover { box-shadow: var(--shadow-md); border-color: var(--accent); }
.qr-code {
    width: 100px; height: 100px; border-radius: 10px;
    background: #fff; padding: 6px; flex-shrink: 0;
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
}
.qr-code svg { width: 100%; height: 100%; display: block; }
.qr-img { width: 100%; height: 100%; object-fit: contain; display: block; border-radius: 6px; }
.qr-info { flex: 1; }
.qr-title { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.qr-desc { font-size: 12px; color: var(--text-light); line-height: 1.5; margin-bottom: 6px; }
.qr-num {
    font-size: 14px; font-weight: 700; color: var(--primary);
    font-family: 'Courier New', monospace;
}

/* Right form column */
.contact-form-card {
    background: #fff; border-radius: 16px;
    padding: 40px; border: 1px solid var(--border);
    box-shadow: var(--shadow-md); position: relative; overflow: hidden;
}
.contact-form-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}
.form-header { margin-bottom: 28px; }
.form-header h3 {
    font-size: 22px; font-weight: 800; color: var(--text-dark); margin-bottom: 10px;
    display: flex; align-items: center; gap: 10px;
}
.form-header h3::before {
    content: ''; width: 5px; height: 22px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: 3px;
}
.form-header .form-desc { font-size: 14px; color: var(--text-light); line-height: 1.7; }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label {
    font-size: 13px; font-weight: 600; color: var(--text-dark);
}
.form-group label .required { color: #ef4444; }
.form-group input, .form-group select, .form-group textarea {
    padding: 12px 14px; border: 1.5px solid var(--border); border-radius: 8px;
    font-size: 14px; font-family: inherit;
    background: var(--bg-light); transition: var(--transition);
    color: var(--text-dark);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(10, 77, 140, 0.08);
}
.form-group textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-group select {
    cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234a5568'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center;
    background-size: 18px; padding-right: 36px;
}

.form-submit {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 32px; border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; font-size: 15px; font-weight: 600; border: none; cursor: pointer;
    transition: var(--transition); margin-top: 4px;
    box-shadow: 0 4px 16px rgba(10, 77, 140, 0.2);
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(10, 77, 140, 0.35);
}
.form-submit:active { transform: translateY(0); }

.form-tips {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--text-light);
    padding-top: 12px; border-top: 1px dashed var(--border);
    margin-top: 4px;
}

/* ===== Independent Pages (products / industries / guide / about / news / contact) ===== */
.page-hero-content { max-width: 760px; }
.page-section { padding: 80px 0; }
.page-section.alt-bg { background: var(--bg-light); }

/* Advantages (products.html) */
.advantage-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-card {
    background: #fff; border-radius: var(--radius); padding: 36px 28px;
    border: 1px solid var(--border); transition: var(--transition); text-align: center;
}
.advantage-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--accent); }
.adv-icon { font-size: 40px; margin-bottom: 18px; }
.advantage-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.advantage-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* Industry detail (industries.html) */
.industry-detail {
    display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
    padding: 44px 0; border-bottom: 1px solid var(--border);
}
.industry-detail:last-child { border-bottom: none; }
.industry-detail.reverse .ind-detail-img { order: 2; }
.ind-detail-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); }
.ind-detail-img img { width: 100%; height: 100%; object-fit: cover; display: block; aspect-ratio: 4 / 3; }
.ind-detail-content h2 { font-size: 26px; font-weight: 700; color: var(--text-dark); margin-bottom: 16px; }
.ind-detail-content > p { font-size: 15px; color: var(--text-light); line-height: 1.85; margin-bottom: 20px; }
.ind-detail-tag { display: inline-block; font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.ind-products { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.ind-prod-tag {
    font-size: 13px; color: var(--text-dark); background: var(--bg-light);
    border: 1px solid var(--border); border-radius: 20px; padding: 6px 14px;
}

/* Guide points / process / faq (guide.html) */
.guide-points { list-style: none; margin: 0 0 18px; padding: 0; }
.guide-points li { font-size: 13px; color: var(--text-light); padding: 5px 0 5px 18px; position: relative; line-height: 1.5; }
.guide-points li::before { content: ''; position: absolute; left: 0; top: 12px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-step { text-align: center; padding: 32px 20px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); transition: var(--transition); }
.process-step:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.step-num {
    width: 52px; height: 52px; margin: 0 auto 18px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 800;
}
.process-step h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px 28px; margin-bottom: 16px; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: var(--accent); }
.faq-q { display: flex; align-items: center; gap: 12px; font-size: 16px; font-weight: 700; color: var(--text-dark); }
.faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 7px; background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 800; }
.faq-icon.a { background: var(--bg-light); color: var(--primary); border: 1px solid var(--border); }
.faq-a { display: flex; align-items: flex-start; gap: 12px; margin-top: 14px; font-size: 14px; color: var(--text-light); line-height: 1.8; }
.faq-a .faq-icon.a { margin-top: 2px; }

/* Culture / Team / Promise cards (about.html, contact.html) */
.culture-grid, .team-grid, .promise-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.culture-card, .team-card, .promise-card {
    background: #fff; border-radius: var(--radius); padding: 36px 28px;
    border: 1px solid var(--border); transition: var(--transition); text-align: center;
}
.culture-card:hover, .team-card:hover, .promise-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--accent); }
.culture-icon, .team-icon, .promise-icon { font-size: 38px; margin-bottom: 16px; }
.culture-card h3, .team-card h3, .promise-card h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.culture-card p, .team-card p, .promise-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* Updates list (news.html) */
.updates-list { max-width: 860px; margin: 0 auto; }
.update-item { display: flex; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--border); }
.update-item:last-child { border-bottom: none; }
.update-date { flex-shrink: 0; text-align: center; width: 72px; }
.update-day { font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1; }
.update-month { font-size: 13px; color: var(--text-light); margin-top: 4px; }
.update-content h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.update-content p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* Independent-page responsive */
@media (max-width: 1024px) {
    .advantage-grid, .process-steps, .culture-grid, .team-grid, .promise-grid { grid-template-columns: repeat(2, 1fr); }
    .industry-detail { gap: 32px; }
}
@media (max-width: 768px) {
    .page-section { padding: 56px 0; }
    .advantage-grid, .process-steps, .culture-grid, .team-grid, .promise-grid { grid-template-columns: 1fr; }
    .industry-detail { grid-template-columns: 1fr; gap: 24px; padding: 32px 0; }
    .industry-detail.reverse .ind-detail-img { order: 0; }
    .ind-detail-content h2 { font-size: 22px; }
    .update-item { flex-direction: column; gap: 12px; }
    .update-date { width: auto; display: flex; align-items: baseline; gap: 8px; text-align: left; }
    .update-day { font-size: 24px; }
}

/* Contact responsive */
@media (max-width: 1024px) {
    .contact-layout { grid-template-columns: 1fr; }
    .contact-form-card { padding: 32px 28px; }
}
@media (max-width: 768px) {
    .info-card { padding: 16px 20px; gap: 16px; }
    .info-icon { width: 44px; height: 44px; font-size: 18px; }
    .info-value { font-size: 16px; }
    .info-card.primary .info-value { font-size: 18px; }
    .qr-card { padding: 20px; }
    .qr-code { width: 80px; height: 80px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form-card { padding: 24px 20px; }
}

/* ===== Footer ===== */
footer { background: #0d1b2a; color: rgba(255, 255, 255, 0.6); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .nav-logo { margin-bottom: 20px; }
.footer-brand .nav-logo .logo-text .cn { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { font-size: 14px; transition: var(--transition); }
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08); padding-top: 32px;
    display: flex; justify-content: space-between; align-items: center; font-size: 13px;
}
.footer-bottom a { color: var(--accent); }

/* ===== Product Detail Page ===== */
.page-hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #063B6E 0%, #0A4D8C 40%, #1565C0 100%);
    position: relative; overflow: hidden;
}
.page-hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}
.page-hero::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.1) 0%, transparent 50%);
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex; align-items: center; gap: 8px;
    font-size: 14px; color: rgba(255, 255, 255, 0.5); margin-bottom: 28px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.7); transition: var(--transition); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { color: rgba(255, 255, 255, 0.3); }
.breadcrumb .current { color: #fff; }
.page-hero h1 { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.3; margin-bottom: 20px; }
.page-hero p, .page-hero .hero-desc { font-size: 17px; color: #fff; line-height: 1.8; max-width: 680px; }

/* Product intro section */
.product-intro { padding: 80px 0; background: var(--bg-white); }
.product-intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.product-intro-text h2 { font-size: 28px; font-weight: 800; color: var(--text-dark); margin-bottom: 20px; }
.product-intro-text p { font-size: 16px; color: var(--text-body); line-height: 1.9; margin-bottom: 16px; }
.product-features-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 28px; }
.feature-item { display: flex; align-items: flex-start; gap: 12px; font-size: 14px; color: var(--text-body); font-weight: 500; }
.feature-item .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; margin-top: 7px; }
.product-intro-visual {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius); padding: 48px; position: relative; overflow: hidden; min-height: 380px;
}
.product-intro-visual::before {
    content: ''; position: absolute; top: -50%; right: -30%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    border-radius: 50%;
}
.product-intro-visual .pv-stat { position: relative; margin-bottom: 28px; }
.product-intro-visual .pv-stat:last-child { margin-bottom: 0; }
.product-intro-visual .pv-stat .num { font-size: 36px; font-weight: 800; color: #fff; line-height: 1; }
.product-intro-visual .pv-stat .num .suffix { font-size: 18px; color: var(--accent); }
.product-intro-visual .pv-stat .label { font-size: 14px; color: rgba(255, 255, 255, 0.6); margin-top: 8px; }
.product-intro-visual .pv-divider { height: 1px; background: rgba(255, 255, 255, 0.1); margin: 24px 0; }

/* Sub-product list */
.sub-products { background: var(--bg-light); }
.sub-category-tabs { display: flex; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; justify-content: center; }
.sub-tab {
    padding: 10px 24px; border-radius: 50px; font-size: 14px; font-weight: 600;
    background: #fff; border: 1px solid var(--border); color: var(--text-body);
    cursor: pointer; transition: var(--transition);
}
.sub-tab:hover, .sub-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.product-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.product-detail-card {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
    display: flex; flex-direction: column;
}
.product-detail-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
.pdc-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 28px 32px; position: relative; overflow: hidden;
}
.pdc-header::before {
    content: ''; position: absolute; top: 0; right: 0; width: 120px; height: 120px;
    background: radial-gradient(circle, rgba(0,180,216,0.1) 0%, transparent 70%);
}
.pdc-tag {
    display: inline-block; font-size: 11px; font-weight: 600; color: var(--accent);
    letter-spacing: 1px; text-transform: uppercase; margin-bottom: 10px;
    padding: 4px 12px; background: rgba(0, 180, 216, 0.1); border-radius: 50px;
}
.pdc-header h3 { font-size: 19px; font-weight: 700; color: #fff; line-height: 1.4; }
.pdc-body { padding: 28px 32px; flex: 1; display: flex; flex-direction: column; }
.pdc-body .pdc-desc { font-size: 14px; color: var(--text-body); line-height: 1.75; margin-bottom: 20px; flex: 1; }
.pdc-specs {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px;
    padding-top: 20px; border-top: 1px solid var(--border);
}
.pdc-spec-item { font-size: 13px; }
.pdc-spec-item .spec-label { color: var(--text-light); font-size: 12px; margin-bottom: 2px; }
.pdc-spec-item .spec-value { color: var(--text-dark); font-weight: 600; }
.pdc-footer { display: flex; align-items: center; justify-content: space-between; }
.pdc-link {
    font-size: 14px; color: var(--primary); font-weight: 600;
    display: inline-flex; align-items: center; gap: 6px; transition: var(--transition);
}
.pdc-link:hover { gap: 10px; }

/* Product card image */
.pdc-image {
    width: 100%; height: 240px; overflow: hidden;
    background: #ffffff;
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--border); position: relative;
}
.pdc-image img {
    max-width: 85%; max-height: 85%; object-fit: contain;
    transition: transform 0.5s ease;
    position: relative; z-index: 2;
}
.product-detail-card:hover .pdc-image img { transform: scale(1.06); }

/* Application section */
.applications-section { background: var(--bg-white); }
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.app-card {
    background: var(--bg-light); border-radius: var(--radius);
    padding: 36px 28px; text-align: center; transition: var(--transition);
    border: 1px solid transparent;
}
.app-card:hover { background: #fff; border-color: var(--border); box-shadow: var(--shadow-md); transform: translateY(-4px); }
.app-card .app-icon {
    width: 60px; height: 60px; border-radius: 14px; margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center; font-size: 28px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
}
.app-card h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.app-card p { font-size: 14px; color: var(--text-light); line-height: 1.6; }

/* ===== Animations ===== */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== Clickable Card Wrappers ===== */
.card-cover {
    display: block;
    color: inherit;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
}
.card-cover:hover { color: inherit; }
.card-cover:focus { outline: none; }
.card-cover:focus-visible .product-card,
.card-cover:focus-visible .industry-card,
.card-cover:focus-visible .news-card {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Single-image links (products / industries / news / about pages) */
.img-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
    cursor: pointer;
    position: relative;
}
.img-link::after {
    content: '查看详情 →';
    position: absolute;
    left: 50%;
    bottom: 12px;
    transform: translateX(-50%) translateY(6px);
    background: linear-gradient(135deg, var(--accent), #0096b8);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 999px;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 6px 18px rgba(0,180,216,0.45);
    z-index: 5;
}
.img-link:hover::after,
.img-link:focus-visible::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.img-link:hover img { transform: scale(1.05); }
.img-link:focus { outline: none; }
.img-link:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius);
}

/* Product detail: main image zoom cursor */
.pd-gallery-main img { cursor: zoom-in; }

.hero-card-link {
    display: block;
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}
.hero-card-link:hover .hero-card {
    transform: translateY(-6px) scale(1.04);
    box-shadow: 0 16px 32px -8px rgba(10, 77, 140, 0.32);
}

.about-img-link {
    display: block;
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    color: inherit;
    text-decoration: none;
}
.about-img-link .img-link-hint {
    position: absolute;
    bottom: 16px; right: 16px;
    background: rgba(10, 77, 140, 0.92);
    color: #fff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition);
    pointer-events: none;
    backdrop-filter: blur(4px);
}
.about-img-link:hover .img-link-hint { opacity: 1; transform: translateY(0); }
.about-img-link:hover .about-img-main img { transform: scale(1.05); }

/* ===== All Products Scroll Gallery ===== */
.ap-filter-bar {
    display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
    margin-bottom: 28px;
}
.ap-tab {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 18px; border: 2px solid #dce4ed; border-radius: 999px;
    background: #fff; color: var(--text-light); font-size: 14px; font-weight: 600;
    cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.ap-tab .ap-tab-count {
    display: inline-block; min-width: 20px; padding: 1px 6px;
    background: #eef2f7; color: var(--text-light); border-radius: 999px;
    font-size: 12px; font-weight: 700; line-height: 1.4;
}
.ap-tab:hover { border-color: var(--primary); color: var(--primary); }
.ap-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary); color: #fff;
}
.ap-tab.active .ap-tab-count { background: rgba(255,255,255,0.25); color: #fff; }

.ap-gallery-wrap { position: relative; }
.ap-gallery {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
    padding: 10px 4px;
}

.ap-card {
    display: flex; flex-direction: column;
    background: #fff; border-radius: var(--radius);
    overflow: hidden; text-decoration: none; color: inherit;
    box-shadow: 0 4px 16px rgba(10,77,140,0.08);
    transition: var(--transition); position: relative;
}
.ap-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px -8px rgba(10,77,140,0.22);
}
.ap-card:focus { outline: none; }
.ap-card:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

.ap-card-img {
    position: relative; height: 200px; overflow: hidden;
    background: #ffffff;
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--border);
}
.ap-card-img img {
    max-width: 90%; max-height: 170px; object-fit: contain;
    transition: transform 0.4s ease;
    position: relative; z-index: 2;
}
.ap-card:hover .ap-card-img img { transform: scale(1.08); }
.ap-card-cat {
    position: absolute; top: 10px; left: 10px;
    padding: 3px 10px; border-radius: 999px;
    background: rgba(0,180,216,0.95); color: #fff;
    font-size: 11px; font-weight: 700; z-index: 3;
    box-shadow: 0 2px 8px rgba(0,180,216,0.35);
}
.ap-card-body { padding: 16px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.ap-card-body h4 { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
.ap-card-body p { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; flex: 1;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ap-card-cta {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 13px; font-weight: 700; color: var(--primary);
    transition: gap 0.3s ease;
}
.ap-card:hover .ap-card-cta { gap: 8px; }

.ap-loading { padding: 60px 20px; text-align: center; color: var(--text-light); font-size: 15px; width: 100%; grid-column: 1 / -1; }
.ap-hint { text-align: center; color: var(--text-light); font-size: 13px; margin-top: 8px; }

/* ===== Product Inquiry Banner (contact.html) ===== */
.inquiry-banner {
    background: linear-gradient(135deg, #e8f1fa, #f0f5fa);
    border-bottom: 2px solid var(--primary);
    padding: 16px 0;
}
.inquiry-banner-inner {
    display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.inquiry-icon { font-size: 28px; }
.inquiry-text { flex: 1; min-width: 200px; }
.inquiry-label { font-size: 14px; color: var(--text-light); }
.inquiry-product { font-size: 18px; color: var(--primary); font-weight: 700; }
.inquiry-back {
    font-size: 14px; color: var(--text-light); text-decoration: none;
    padding: 6px 16px; border: 1px solid #dce4ed; border-radius: 999px;
    transition: var(--transition); white-space: nowrap;
}
.inquiry-back:hover { border-color: var(--primary); color: var(--primary); }

@media (max-width: 1024px) {
    .ap-gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .ap-gallery { grid-template-columns: 1fr; }
    .ap-card-img { height: 170px; }
    .ap-card-img img { max-height: 140px; }
    .ap-tab { padding: 6px 14px; font-size: 13px; }
    .ap-gallery { gap: 14px; }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .hero-text h1 { font-size: 38px; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .industries-grid { grid-template-columns: repeat(2, 1fr); }
    .guide-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .stat-item:nth-child(2)::after { display: none; }
    .product-intro-grid { grid-template-columns: 1fr; }
    .product-list { grid-template-columns: 1fr; }
    .app-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .nav-links.active {
        display: flex; flex-direction: column; position: absolute;
        top: 72px; left: 0; right: 0; background: #fff;
        padding: 24px; gap: 20px; box-shadow: var(--shadow-md);
    }
    section { padding: 64px 0; }
    .section-title, .page-hero h1 { font-size: 28px; }
    .page-hero { padding: 120px 0 60px; }
    .hero-text h1 { font-size: 30px; }
    .hero-text .subtitle { font-size: 15px; }
    .hero-buttons { flex-direction: column; }
    .products-grid { grid-template-columns: 1fr; }
    .industries-grid { grid-template-columns: 1fr; }
    .guide-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .contact-layout { grid-template-columns: 1fr; gap: 28px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .stats-bar { grid-template-columns: 1fr 1fr; padding: 24px; }
    .stat-item::after { display: none !important; }
    .about-features { grid-template-columns: 1fr; }
    .about-img-main { height: 200px; }
    .cta-content h2 { font-size: 26px; }
    .hero { min-height: auto; padding: 120px 0 160px; }
    .hero-stats { position: relative; bottom: 0; margin-top: 60px; }
    .app-grid { grid-template-columns: 1fr; }
    .product-features-list { grid-template-columns: 1fr; }
    .pdc-specs { grid-template-columns: 1fr; }
    .pdc-image { height: 180px; }
    .product-list { grid-template-columns: 1fr; }
}

/* ===== Sitemap / Visual Site Map ===== */
.sitemap-hero {
    position: relative; min-height: 340px;
    display: flex; align-items: center; justify-content: center;
    text-align: center; padding-top: 72px;
    background: linear-gradient(135deg, #063B6E 0%, #0A4D8C 40%, #1565C0 100%);
    overflow: hidden;
}
.sitemap-hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 180, 216, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 180, 216, 0.1) 0%, transparent 50%);
}
.sitemap-hero::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}
.sitemap-hero .container { position: relative; z-index: 2; }
.sitemap-hero h1 { font-size: 42px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.sitemap-hero p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto; }

/* Tree layout */
.sitemap-tree { padding: 80px 0; background: var(--bg-light); }

.tree-root {
    display: flex; flex-direction: column; align-items: center;
    position: relative;
}

/* Root node */
.tree-node-root {
    position: relative; z-index: 5;
    background: #fff; border-radius: 16px;
    padding: 28px 48px; box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary);
    text-align: center; transition: var(--transition);
    display: block; max-width: 320px; width: 100%;
}
.tree-node-root:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 70px rgba(10, 77, 140, 0.25);
}
.tree-node-root .root-icon {
    width: 64px; height: 64px; margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 16px; display: flex; align-items: center; justify-content: center;
    font-size: 28px; font-weight: 800; color: #fff;
}
.tree-node-root .root-title { font-size: 22px; font-weight: 800; color: var(--text-dark); margin-bottom: 6px; }
.tree-node-root .root-desc { font-size: 14px; color: var(--text-light); }
.tree-node-root .root-url { font-size: 12px; color: var(--accent); margin-top: 8px; font-family: monospace; }

/* Connector lines */
.tree-connector {
    width: 2px; height: 48px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    margin: 0 auto;
}
.tree-branch-bar {
    width: 100%; max-width: 1000px; height: 2px;
    background: linear-gradient(to right, transparent, var(--accent), var(--accent), transparent);
    margin: 0 auto;
}

/* Level 2 — Products */
.tree-level-2 {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    max-width: 1100px; margin: 0 auto; width: 100%;
    margin-top: 0;
}
.tree-stems {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    max-width: 1100px; margin: 0 auto; width: 100%;
}
.tree-stem {
    display: flex; justify-content: center;
}
.tree-stem::before {
    content: ''; width: 2px; height: 32px;
    background: linear-gradient(to bottom, var(--accent), var(--primary-light));
}

.tree-leaf {
    background: #fff; border-radius: 12px;
    padding: 20px 16px; box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    text-align: center; transition: var(--transition);
    display: block; position: relative; overflow: hidden;
}
.tree-leaf::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    transform: scaleX(0); transition: var(--transition);
}
.tree-leaf:hover {
    transform: translateY(-6px); box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.tree-leaf:hover::before { transform: scaleX(1); }
.tree-leaf .leaf-icon {
    width: 48px; height: 48px; margin: 0 auto 12px;
    border-radius: 12px; display: flex; align-items: center; justify-content: center;
    font-size: 22px; background: var(--accent-glow); color: var(--primary);
}
.tree-leaf .leaf-title { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.tree-leaf .leaf-count { font-size: 12px; color: var(--accent); font-weight: 600; margin-bottom: 6px; }
.tree-leaf .leaf-desc { font-size: 12px; color: var(--text-light); line-height: 1.5; }
.tree-leaf .leaf-arrow {
    margin-top: 10px; font-size: 13px; color: var(--primary); font-weight: 600;
    opacity: 0; transform: translateY(4px); transition: var(--transition);
}
.tree-leaf:hover .leaf-arrow { opacity: 1; transform: translateY(0); }

/* Sections panel */
.sitemap-sections { padding: 80px 0; background: #fff; }
.sections-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
    margin-top: 48px;
}
.section-tile {
    display: flex; align-items: center; gap: 16px;
    padding: 24px; border-radius: 12px;
    background: var(--bg-light); border: 1px solid var(--border);
    transition: var(--transition);
}
.section-tile:hover {
    background: #fff; border-color: var(--primary-light);
    box-shadow: var(--shadow-md); transform: translateX(4px);
}
.section-tile .st-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; flex-shrink: 0;
}
.section-tile .st-info h4 { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 2px; }
.section-tile .st-info p { font-size: 13px; color: var(--text-light); }

/* External links */
.sitemap-external { padding: 80px 0; background: var(--bg-light); }
.ext-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
    margin-top: 48px;
}
.ext-card {
    display: flex; align-items: center; gap: 16px;
    padding: 24px; border-radius: 12px;
    background: #fff; border: 1px solid var(--border);
    transition: var(--transition);
}
.ext-card:hover {
    box-shadow: var(--shadow-md); border-color: var(--accent);
    transform: translateY(-3px);
}
.ext-card .ext-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; background: var(--accent-glow); color: var(--primary);
    flex-shrink: 0;
}
.ext-card .ext-info h4 { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 2px; }
.ext-card .ext-info p { font-size: 13px; color: var(--text-light); }
.ext-card .ext-link { font-size: 12px; color: var(--accent); font-family: monospace; }

/* Stats bar in sitemap */
.smap-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
    padding: 40px; background: #fff; border-radius: 16px;
    box-shadow: var(--shadow-md); margin-top: 48px;
}
.smap-stat { text-align: center; }
.smap-stat .num { font-size: 40px; font-weight: 800; color: var(--primary); }
.smap-stat .num .suffix { font-size: 20px; color: var(--accent); }
.smap-stat .label { font-size: 14px; color: var(--text-light); margin-top: 4px; }

/* Sitemap responsive */
@media (max-width: 900px) {
    .tree-level-2 { grid-template-columns: repeat(2, 1fr); }
    .tree-stems { grid-template-columns: repeat(2, 1fr); }
    .sections-grid { grid-template-columns: repeat(2, 1fr); }
    .ext-grid { grid-template-columns: 1fr; }
    .smap-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .sitemap-hero h1 { font-size: 30px; }
    .tree-level-2 { grid-template-columns: 1fr; }
    .tree-stems { grid-template-columns: 1fr; }
    .sections-grid { grid-template-columns: 1fr; }
    .smap-stats { grid-template-columns: 1fr 1fr; }
}

/* ===== Product Detail Page V2 (Optimized) ===== */

/* Sub-category filter tabs */
.pdt-tabs {
    display: flex; gap: 10px; margin-bottom: 40px; flex-wrap: wrap; justify-content: center;
}
.pdt-tab {
    padding: 10px 22px; border-radius: 50px; font-size: 14px; font-weight: 600;
    background: #fff; border: 1.5px solid var(--border); color: var(--text-body);
    cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: 8px;
}
.pdt-tab .pdt-tab-count {
    font-size: 12px; padding: 2px 8px; border-radius: 50px;
    background: var(--bg-gray); color: var(--text-light); transition: var(--transition);
}
.pdt-tab:hover { border-color: var(--accent); color: var(--primary); }
.pdt-tab:hover .pdt-tab-count { background: var(--accent-glow); color: var(--accent); }
.pdt-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; border-color: transparent; box-shadow: 0 4px 16px rgba(10, 77, 140, 0.25);
}
.pdt-tab.active .pdt-tab-count { background: rgba(255,255,255,0.25); color: #fff; }

/* New horizontal product card */
.product-list-v2 { display: grid; grid-template-columns: 1fr; gap: 28px; }
.pdc2-card {
    background: #fff; border-radius: 16px; overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
    display: grid; grid-template-columns: 300px 1fr; position: relative;
}
.pdc2-card:hover {
    box-shadow: 0 16px 48px rgba(10, 77, 140, 0.12);
    transform: translateY(-3px); border-color: transparent;
}
.pdc2-card::after {
    content: ''; position: absolute; top: 0; left: 0; bottom: 0; width: 5px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    transform: scaleY(0); transform-origin: top; transition: transform 0.4s ease;
}
.pdc2-card:hover::after { transform: scaleY(1); }

/* Card image area */
.pdc2-image {
    background: #ffffff;
    display: flex; align-items: center; justify-content: center;
    padding: 32px; position: relative; overflow: hidden;
    border-right: 1px solid var(--border);
}
.pdc2-image img {
    max-width: 100%; max-height: 220px; object-fit: contain;
    transition: transform 0.5s ease;
    position: relative; z-index: 2;
}
.pdc2-card:hover .pdc2-image img { transform: scale(1.08); }

/* Card content */
.pdc2-content { padding: 32px 36px; display: flex; flex-direction: column; }
.pdc2-top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.pdc2-tag {
    display: inline-block; font-size: 12px; font-weight: 600; color: var(--accent);
    letter-spacing: 0.5px; padding: 5px 14px;
    background: var(--accent-glow); border-radius: 50px;
}
.pdc2-num {
    font-size: 13px; font-weight: 700; color: var(--text-light);
    font-family: 'Courier New', monospace; margin-left: auto;
}
.pdc2-content h3 {
    font-size: 21px; font-weight: 800; color: var(--text-dark);
    line-height: 1.35; margin-bottom: 14px;
}
.pdc2-desc {
    font-size: 15px; color: var(--text-body); line-height: 1.8;
    margin-bottom: 24px; flex: 1;
}
/* Spec chips */
.pdc2-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.pdc2-chip {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: 8px;
    background: var(--bg-light); border: 1px solid var(--border);
    transition: var(--transition);
}
.pdc2-card:hover .pdc2-chip { border-color: rgba(0, 180, 216, 0.2); }
.pdc2-chip .chip-label { font-size: 12px; color: var(--text-light); }
.pdc2-chip .chip-value { font-size: 13px; font-weight: 700; color: var(--primary); }
.pdc2-chip .chip-sep { font-size: 12px; color: var(--text-light); }

/* Card footer */
.pdc2-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.pdc2-link {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 28px; border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; font-size: 14px; font-weight: 600; transition: var(--transition);
}
.pdc2-link:hover {
    transform: translateX(4px); box-shadow: 0 6px 20px rgba(10, 77, 140, 0.3);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.pdc2-link .arrow { transition: transform 0.3s ease; }
.pdc2-link:hover .arrow { transform: translateX(4px); }
.pdc2-quick { font-size: 13px; color: var(--text-light); }
.pdc2-quick a { color: var(--primary); font-weight: 600; }

/* Comparison table */
.compare-section { background: #fff; padding: 80px 0; }
.compare-table-wrap { overflow-x: auto; border-radius: 12px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.compare-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.compare-table th, .compare-table td { padding: 14px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--border); }
.compare-table thead th {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff; font-weight: 700; font-size: 13px; letter-spacing: 0.3px;
    position: sticky; top: 0; z-index: 1;
}
.compare-table tbody tr { transition: var(--transition); }
.compare-table tbody tr:hover { background: var(--bg-light); }
.compare-table tbody tr:nth-child(even) { background: #fafbfd; }
.compare-table tbody tr:nth-child(even):hover { background: var(--bg-light); }
.compare-table td:first-child { font-weight: 600; color: var(--text-dark); }
.compare-table td .ct-tag { font-size: 11px; padding: 2px 8px; border-radius: 4px; background: var(--accent-glow); color: var(--accent); font-weight: 600; margin-left: 6px; }
.compare-table .ct-link { color: var(--primary); font-weight: 600; }
.compare-table .ct-link:hover { color: var(--accent); }

/* Related products */
.related-section { background: var(--bg-light); padding: 80px 0; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.related-card {
    background: #fff; border-radius: 12px; padding: 28px 20px;
    border: 1px solid var(--border); text-align: center; transition: var(--transition);
    position: relative; overflow: hidden;
}
.related-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    transform: scaleX(0); transform-origin: left; transition: var(--transition);
}
.related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
.related-card:hover::before { transform: scaleX(1); }
.related-card .rc-icon {
    width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center; font-size: 24px;
    background: linear-gradient(135deg, rgba(10, 77, 140, 0.08), rgba(0, 180, 216, 0.08));
    transition: var(--transition);
}
.related-card:hover .rc-icon { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.related-card .rc-icon svg { stroke: var(--primary); transition: var(--transition); }
.related-card:hover .rc-icon svg { stroke: #fff; }
.related-card h4 { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 6px; }
.related-card p { font-size: 13px; color: var(--text-light); line-height: 1.5; margin-bottom: 14px; }
.related-card .rc-link { font-size: 13px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; transition: var(--transition); }
.related-card:hover .rc-link { gap: 8px; }

/* Page sub-nav (sticky) */
.page-subnav {
    position: sticky; top: 72px; z-index: 99;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 12px 0; box-shadow: 0 2px 8px rgba(10, 77, 140, 0.04);
}
.page-subnav-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.page-subnav-links { display: flex; gap: 6px; flex-wrap: wrap; }
.page-subnav-links a {
    font-size: 13px; color: var(--text-light); font-weight: 500;
    padding: 6px 14px; border-radius: 6px; transition: var(--transition);
}
.page-subnav-links a:hover { background: var(--bg-gray); color: var(--primary); }
.page-subnav-cta {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 13px; color: #fff; font-weight: 600;
    padding: 8px 20px; border-radius: 6px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    transition: var(--transition); white-space: nowrap;
}
.page-subnav-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(10, 77, 140, 0.3); }

/* Enhanced product intro */
.product-intro-v2 { padding: 64px 0; background: #fff; }
.product-intro-v2 .pi2-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.pi2-text h2 { font-size: 30px; font-weight: 800; color: var(--text-dark); margin-bottom: 20px; line-height: 1.3; }
.pi2-text p { font-size: 16px; color: var(--text-body); line-height: 1.9; margin-bottom: 16px; }
.pi2-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 28px; }
.pi2-feature {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px; border-radius: 10px;
    background: var(--bg-light); border: 1px solid var(--border);
    transition: var(--transition);
}
.pi2-feature:hover { border-color: var(--accent); background: #fff; box-shadow: var(--shadow-sm); }
.pi2-feature .pf-icon {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 14px; font-weight: 800; flex-shrink: 0;
}
.pi2-feature .pf-text { font-size: 14px; color: var(--text-dark); font-weight: 600; }
.pi2-visual {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: 16px; padding: 40px; position: relative; overflow: hidden;
    min-height: 360px; display: flex; flex-direction: column; justify-content: center;
}
.pi2-visual::before {
    content: ''; position: absolute; top: -40%; right: -30%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(0,180,216,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.pi2-visual::after {
    content: ''; position: absolute; bottom: -30%; left: -20%;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(0,180,216,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.pi2-stats { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.pi2-stat { text-align: center; }
.pi2-stat:not(:last-child)::after {
    content: ''; position: absolute; right: 0; top: 50%;
    transform: translateY(-50%); width: 1px; height: 48px; background: rgba(255,255,255,0.1);
}
.pi2-stat .num { font-size: 34px; font-weight: 800; color: #fff; line-height: 1; }
.pi2-stat .num .suffix { font-size: 16px; color: var(--accent); }
.pi2-stat .label { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 8px; }

/* V2 responsive */
@media (max-width: 1024px) {
    .pdc2-card { grid-template-columns: 240px 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .pi2-grid { grid-template-columns: 1fr; }
    .pi2-visual { min-height: 280px; }
}
@media (max-width: 768px) {
    .pdc2-card { grid-template-columns: 1fr; }
    .pdc2-image { border-right: none; border-bottom: 1px solid var(--border); padding: 24px; }
    .pdc2-image img { max-height: 180px; }
    .pdc2-content { padding: 24px; }
    .pdc2-content h3 { font-size: 18px; }
    .pdc2-chips { gap: 8px; }
    .pdc2-chip { padding: 6px 12px; }
    .related-grid { grid-template-columns: 1fr; }
    .pi2-features { grid-template-columns: 1fr; }
    .pi2-stats { grid-template-columns: 1fr; gap: 16px; }
    .pi2-stat:not(:last-child)::after { display: none; }
    .page-subnav-inner { flex-direction: column; align-items: flex-start; }
    .page-subnav-links { overflow-x: auto; flex-wrap: nowrap; }
    .pdt-tabs { overflow-x: auto; flex-wrap: nowrap; justify-content: flex-start; }
    .pdt-tab { white-space: nowrap; }
}

/* ===== Single Product Detail Page ===== */
.pd-hero {
    background: linear-gradient(135deg, #0a4d8c 0%, #0d5fa3 60%, #00b4d8 100%);
    padding: 48px 0 56px; color: #fff; position: relative; overflow: hidden;
}
.pd-hero::before {
    content: ''; position: absolute; top: -60%; right: -20%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(0,180,216,0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.pd-breadcrumb {
    font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 20px;
    display: flex; align-items: center; gap: 8px; position: relative; z-index: 2;
}
.pd-breadcrumb a { color: rgba(255,255,255,0.7); transition: color 0.2s; }
.pd-breadcrumb a:hover { color: #fff; }
.pd-breadcrumb .sep { opacity: 0.5; }
.pd-hero-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
    align-items: center; position: relative; z-index: 2;
}
.pd-hero-info h1 {
    font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 16px;
}
.pd-hero-info .pd-cat-badge {
    display: inline-block; font-size: 13px; font-weight: 600;
    padding: 6px 16px; border-radius: 20px;
    background: rgba(255,255,255,0.15); margin-bottom: 20px;
}
.pd-hero-desc {
    font-size: 16px; line-height: 1.8; color: rgba(255,255,255,0.85);
    margin-bottom: 28px;
}
.pd-hero-meta { display: flex; gap: 24px; flex-wrap: wrap; }
.pd-hero-meta .meta-item {
    display: flex; flex-direction: column; gap: 4px;
}
.pd-hero-meta .meta-label { font-size: 12px; color: rgba(255,255,255,0.5); }
.pd-hero-meta .meta-value { font-size: 15px; font-weight: 600; color: #fff; }

.pd-gallery {
    background: #fff; border-radius: 16px; padding: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.pd-gallery-main {
    width: 100%; height: 360px; border-radius: 10px; overflow: hidden;
    background: #ffffff;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 12px; position: relative;
    border: 1px solid var(--border);
}
.pd-gallery-main img {
    max-width: 100%; max-height: 100%; object-fit: contain;
    transition: transform 0.3s ease;
    position: relative; z-index: 2;
}
.pd-gallery-main img:hover { transform: scale(1.05); }
.pd-gallery-thumbs {
    display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px;
}
.pd-gallery-thumb {
    width: 72px; height: 72px; border-radius: 8px; overflow: hidden;
    border: 2px solid transparent; cursor: pointer;
    background: #ffffff;
    flex-shrink: 0; transition: border-color 0.2s;
    position: relative; outline: 1px solid var(--border);
}
.pd-gallery-thumb.active { border-color: var(--accent); }
.pd-gallery-thumb:hover { border-color: var(--primary); }
.pd-gallery-thumb img { width: 100%; height: 100%; object-fit: contain; }

/* Product content section */
.pd-content-section { padding: 64px 0; background: #fff; }
.pd-content-grid { display: grid; grid-template-columns: 1fr 320px; gap: 48px; }
.pd-main-content h2 {
    font-size: 22px; font-weight: 700; color: var(--text-dark);
    margin-bottom: 20px; padding-bottom: 12px;
    border-bottom: 2px solid var(--border); position: relative;
}
.pd-main-content h2::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 60px; height: 2px; background: var(--accent);
}
.pd-content-text {
    font-size: 15px; line-height: 2; color: var(--text-body);
    white-space: pre-wrap; word-break: break-word;
}
.pd-content-text .pd-line { margin-bottom: 8px; }

/* Spec sidebar */
.pd-sidebar {
    position: sticky; top: 90px; align-self: start;
}
.pd-spec-card {
    background: var(--bg-light); border-radius: 12px;
    padding: 28px; border: 1px solid var(--border);
}
.pd-spec-card h3 {
    font-size: 16px; font-weight: 700; color: var(--text-dark);
    margin-bottom: 20px; display: flex; align-items: center; gap: 8px;
}
.pd-spec-card h3::before {
    content: ''; width: 4px; height: 18px;
    background: linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius: 2px;
}
.pd-spec-list { display: flex; flex-direction: column; gap: 14px; }
.pd-spec-item {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 12px; padding-bottom: 14px; border-bottom: 1px dashed var(--border);
}
.pd-spec-item:last-child { border-bottom: none; padding-bottom: 0; }
.pd-spec-key { font-size: 13px; color: var(--text-light); font-weight: 500; white-space: nowrap; }
.pd-spec-val { font-size: 13px; color: var(--text-dark); font-weight: 600; text-align: right; }

/* CTA box on detail page */
.pd-cta-box {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: 12px; padding: 28px; color: #fff;
    margin-top: 24px; text-align: center;
}
.pd-cta-box h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.pd-cta-box p { font-size: 13px; color: rgba(255,255,255,0.7); margin-bottom: 20px; }
.pd-cta-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 8px; font-size: 14px; font-weight: 600;
    background: #fff; color: var(--primary);
    transition: var(--transition);
}
.pd-cta-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.2); }

/* Related products on detail page */
.pd-related { padding: 64px 0; background: var(--bg-light); }
.pd-related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pd-related-card {
    background: #fff; border-radius: 10px; overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
    cursor: pointer; text-decoration: none; color: inherit;
}
.pd-related-card:hover {
    box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent;
}
.pd-related-img {
    height: 160px;
    background: #ffffff;
    display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.pd-related-img img { max-width: 90%; max-height: 90%; object-fit: contain; transition: transform 0.3s; }
.pd-related-card:hover .pd-related-img img { transform: scale(1.08); }
.pd-related-body { padding: 16px 18px; }
.pd-related-body h4 { font-size: 14px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.pd-related-body p { font-size: 12px; color: var(--text-light); line-height: 1.5; }

/* Loading state */
.pd-loading {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 400px; gap: 16px;
}
.pd-loading .spinner {
    width: 48px; height: 48px; border: 4px solid var(--border);
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.pd-loading p { color: var(--text-light); font-size: 14px; }

/* Error state */
.pd-error {
    text-align: center; padding: 80px 20px;
}
.pd-error h2 { font-size: 24px; color: var(--text-dark); margin-bottom: 12px; }
.pd-error p { color: var(--text-light); margin-bottom: 24px; }
.pd-error a {
    display: inline-block; padding: 12px 28px; border-radius: 8px;
    background: var(--primary); color: #fff; font-weight: 600;
    text-decoration: none; transition: var(--transition);
}
.pd-error a:hover { background: var(--primary-dark); }

/* ===== Parameter Table (Detail Page) ===== */
.pd-summary-box {
    background: linear-gradient(135deg, #f0f6ff, #e8f0fe);
    border-left: 4px solid var(--primary, #0a4d8c);
    border-radius: 10px;
    padding: 28px 32px;
    margin-bottom: 36px;
}
.pd-summary-box h2 { font-size: 20px; font-weight: 700; color: var(--text-dark, #1a2a3a); margin-bottom: 14px; }
.pd-summary-box p { font-size: 15px; line-height: 1.8; color: var(--text, #3a4a5a); }

.pd-specs-section { margin-bottom: 40px; }
.pd-specs-section h2 {
    font-size: 22px; font-weight: 700; color: var(--text-dark, #1a2a3a);
    margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--primary, #0a4d8c);
}

.pd-table-wrap {
    overflow-x: auto;
    margin-bottom: 24px;
    border-radius: 10px;
    border: 1px solid #e0e6ed;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    -webkit-overflow-scrolling: touch;
}
.pd-table-sep { border: none; border-top: 1px solid #e0e6ed; margin: 32px 0; }

.pd-param-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 600px;
}
.pd-param-table thead { background: linear-gradient(135deg, var(--primary-dark, #063563), var(--primary, #0a4d8c)); }
.pd-param-table thead th {
    color: #fff;
    font-weight: 600;
    padding: 14px 16px;
    text-align: left;
    white-space: nowrap;
    font-size: 14px;
}
.pd-param-table tbody tr {
    border-bottom: 1px solid #eef1f5;
    transition: background 0.15s;
}
.pd-param-table tbody tr:nth-child(even) { background: #f8fafd; }
.pd-param-table tbody tr:hover { background: #e8f1fb; }
.pd-param-table tbody td {
    padding: 12px 16px;
    color: var(--text, #3a4a5a);
    line-height: 1.6;
    vertical-align: top;
}
.pd-param-table tbody th {
    padding: 12px 16px;
    color: var(--text-dark, #1a2a3a);
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
    background: #f0f4f8;
}
.pd-no-img {
    display: flex; align-items: center; justify-content: center;
    width: 100%; height: 100%; color: #999; font-size: 14px;
    background: #f5f5f5; border-radius: 10px;
}

/* Table responsive scrollbar */
.pd-table-wrap::-webkit-scrollbar { height: 6px; }
.pd-table-wrap::-webkit-scrollbar-track { background: #f0f0f0; border-radius: 3px; }
.pd-table-wrap::-webkit-scrollbar-thumb { background: #bbb; border-radius: 3px; }
.pd-table-wrap::-webkit-scrollbar-thumb:hover { background: #999; }

/* ===== Detail page responsive ===== ===== */
@media (max-width: 1100px) {
    .pd-hero-info h1 { font-size: 28px; }
    .pd-hero-grid { gap: 32px; }
    .pd-gallery-main { height: 320px; }
}
@media (max-width: 900px) {
    .pd-hero-grid { grid-template-columns: 1fr; gap: 32px; }
    .pd-gallery { max-width: 560px; margin: 0 auto; width: 100%; }
    .pd-content-grid { grid-template-columns: 1fr; }
    .pd-sidebar { position: static; }
    .pd-related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .pd-hero { padding: 32px 0 40px; }
    .pd-hero-info h1 { font-size: 24px; }
    .pd-gallery-main { height: 260px; }
    .pd-gallery-thumb { width: 56px; height: 56px; }
    .pd-content-section { padding: 40px 0; }
    .pd-related-grid { grid-template-columns: 1fr; }
    .pd-summary-box { padding: 20px; }
    .pd-param-table { font-size: 12px; min-width: 400px; }
    .pd-param-table thead th { padding: 10px 8px; }
    .pd-param-table tbody td { padding: 8px; }
    .pd-param-table tbody th { padding: 8px; }
}

/* ===== Homepage Industry Cards with Images ===== */
.industry-card-img {
    width: 100%; height: 200px; overflow: hidden;
    position: relative; border-radius: 10px 10px 0 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.industry-card-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s ease;
}
.industry-card:hover .industry-card-img img { transform: scale(1.1); }
.industry-card-img::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to bottom, transparent 40%, rgba(10, 77, 140, 0.7) 100%);
}
.industry-card-img .ind-icon-overlay {
    position: absolute; bottom: 16px; left: 20px; z-index: 2;
    font-size: 32px; filter: drop-shadow(0 2px 8px rgba(0,0,0,0.3));
}
.industry-card {
    background: #fff; border-radius: 10px; overflow: hidden;
    border: 1px solid var(--border); transition: var(--transition);
    display: flex; flex-direction: column;
}
.industry-card:hover {
    box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: transparent;
}
.industry-card .ind-content { padding: 24px; flex: 1; }
.industry-card .ind-content h3 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.industry-card .ind-content p { font-size: 14px; color: var(--text-light); line-height: 1.7; }

@media (max-width: 768px) {
    .industry-card-img { height: 160px; }
}