/* * Main Stylesheet 
 * Version: 2.1.0
 * Build Date: 2024

*/
:root { --primary-color:#ff6600; --secondary-color:#aa0006; --dark-bg:#111111; --light-bg:#f8f9fa; --text-main:#333333; --text-light:#999999; --white:#ffffff; --font-stack:system-ui,-apple-system,sans-serif; }

/* Base Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body { 
    font-family: var(--font-stack); 
    color: var(--text-main); 
    line-height: 1.6; 
    background-color: var(--white); 
    overflow-x: hidden; 
    font-size: 16px;
}
a { text-decoration: none; color: inherit; transition: color 0.25s ease-in-out; }
ul, li { list-style: none; }
img { display: block; max-width: 100%; height: auto; object-fit: cover; }

/* Layout Utilities */
.container { width: 100%; max-width: 1440px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
.section-box { padding: 5rem 0; position: relative; }

/* Backgrounds */
.bg-dark { background-color: #1a1a1a; color: var(--white); }
.bg-darker { background-color: var(--dark-bg); color: var(--white); }
.bg-gray { background-color: var(--light-bg); }
.bg-pattern { 
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../images/bg.png') no-repeat fixed center center/cover;
}

/* Header & Navigation */
.header-wrapper { 
    position: fixed; top: 0; left: 0; width: 100%; height: 100px; 
    background: var(--white); z-index: 1000; 
    box-shadow: 0 4px 20px rgba(0,0,0,0.08); 
}
.nav-box { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.logo-area { display: flex; align-items: center; }
.logo-img { height: 60px; width: auto; margin-right: 15px; }
.logo-name { display: flex; flex-direction: column; justify-content: center; }
.logo-name span { font-size: 1.5rem; font-weight: 800; color: #000; letter-spacing: 0.05em; line-height: 1.2; }
.logo-name small { font-size: 1rem; color: #444; font-weight: 500; }

.nav-menu { flex: 1; display: flex; justify-content: center; margin: 0 1rem; }
.nav-menu a { 
    font-size: 0.95rem; font-weight: 600; color: #333; margin: 0 15px; 
    position: relative; padding: 5px 0;
}
.nav-menu a:hover { color: var(--secondary-color); }

.nav-contact { 
    display: flex; align-items: center; height: 50px; 
    border-left: 1px solid #e0e0e0; padding-left: 25px; 
}
.tel-icon { width: 32px; height: 32px; margin-right: 10px; }
.tel-info { display: flex; flex-direction: column; }
.tel-label { font-size: 0.75rem; color: var(--text-light); text-transform: uppercase; }
.tel-number { font-size: 1.35rem; font-weight: 700; color: var(--primary-color); font-family: sans-serif; line-height: 1; margin-top: 2px; }

.mobile-btn { display: none; font-size: 1.8rem; cursor: pointer; color: #333; padding: 5px; }

/* Hero Slider */
.hero-slider { position: relative; height: 100vh; width: 100%; overflow: hidden; margin-top: 100px; background: #000; }
.slide { 
    position: absolute; inset: 0; 
    background-size: cover; background-position: center; 
    opacity: 0; transition: opacity 1.2s ease-in-out; 
    display: flex; align-items: center; justify-content: center; 
}
.slide.active { opacity: 1; z-index: 1; }
.slide-mask { position: absolute; inset: 0; background: rgba(0,0,0,0.4); z-index: 1; }
.slide-content { position: relative; z-index: 3; text-align: center; color: var(--white); padding: 0 20px; }
.slide-content h1 { font-size: 3.5rem; font-weight: 800; margin-bottom: 1.5rem; line-height: 1.2; text-shadow: 0 2px 10px rgba(0,0,0,0.3); }
.slide-content p { font-size: 1.4rem; letter-spacing: 3px; font-weight: 300; }

.slide-dots { position: absolute; bottom: 3rem; left: 0; width: 100%; text-align: center; z-index: 10; }
.dot { 
    display: inline-block; width: 12px; height: 12px; margin: 0 8px; 
    background: rgba(255,255,255,0.4); border-radius: 50%; cursor: pointer; 
    transition: all 0.3s ease; 
}
.dot.active { background: var(--primary-color); transform: scale(1.4); }

/* Common Section Headers */
.sec-header { text-align: center; margin-bottom: 4rem; }
.sec-header h2 { font-size: 2.2rem; margin-bottom: 1rem; font-weight: 700; }
.header-white h2 { color: var(--white); }
.sec-line { width: 50px; height: 3px; background: var(--primary-color); margin: 0 auto; border-radius: 2px; }

/* Advantage Grid */
.adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
.adv-item { text-align: center; padding: 20px; }
.adv-char-icon { 
    width: 70px; height: 70px; margin: 0 auto 1.5rem; 
    border: 2px solid var(--primary-color); border-radius: 50%; 
    display: grid; place-items: center; 
    font-size: 1.8rem; color: var(--primary-color); transition: 0.4s; 
}
.adv-item:hover .adv-char-icon { background: var(--primary-color); color: var(--white); border-color: transparent; }
.adv-item h3 { font-size: 1.2rem; margin-bottom: 0.8rem; color: inherit; }
.adv-item p { font-size: 0.9rem; color: #888; line-height: 1.7; }

/* Business Scope */
.scope-content { text-align: center; max-width: 900px; margin: 0 auto; }
.scope-desc { font-size: 1rem; color: #bbb; margin-bottom: 2.5rem; line-height: 1.8; }
.scope-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.scope-list span { 
    padding: 8px 24px; border: 1px solid #333; border-radius: 50px; 
    font-size: 0.9rem; background: rgba(255,255,255,0.02); color: #ddd; 
}

/* Products */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.prod-card { 
    background: var(--white); border: 1px solid #f0f0f0; 
    border-radius: 6px; overflow: hidden; transition: transform 0.3s, box-shadow 0.3s; 
}
.prod-card:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(0,0,0,0.08); border-color: var(--primary-color); }
.prod-card img { width: 100%; height: 240px; object-fit: cover; }
.prod-info { padding: 15px; text-align: center; font-weight: 600; font-size: 0.95rem; color: #222; }

/* Process */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.proc-box { 
    padding: 40px 20px; border: 1px solid rgba(255,255,255,0.1); 
    background: rgba(255,255,255,0.02); text-align: center; 
    transition: 0.3s; 
}
.proc-box:hover { background: rgba(255,255,255,0.06); border-color: var(--primary-color); }
.proc-img { width: 50px; height: 50px; margin-bottom: 15px; }
.proc-box .no { font-size: 2.5rem; font-weight: 700; color: #333; margin-bottom: 5px; display: block; }
.proc-box:hover .no { color: var(--primary-color); }
.proc-box h4 { font-size: 1.2rem; margin-bottom: 10px; color: var(--white); }
.proc-box p { font-size: 0.85rem; color: #777; }

/* Cases */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.case-item { position: relative; height: 300px; overflow: hidden; border-radius: 6px; cursor: pointer; }
.case-item img { width: 100%; height: 100%; transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.case-item:hover img { transform: scale(1.1); }
.case-item .hover { 
    position: absolute; bottom: 0; left: 0; right: 0; 
    padding: 15px; background: linear-gradient(to top, rgba(0,0,0,0.8), transparent); 
    color: var(--white); text-align: center; font-weight: 600; 
}

/* About Section */
.about-flex { display: flex; align-items: flex-start; gap: 50px; }
.about-text { flex: 1; }
.about-img { flex: 0.8; }
.about-img img { border-radius: 8px; box-shadow: 0 10px 25px rgba(0,0,0,0.15); }

/* Footer */
footer { background: #0a0a0a; color: #ccc; padding: 70px 0 40px; border-top: 4px solid var(--primary-color); }
.foot-layout { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 30px; }
.f-left h3 { color: var(--white); margin-bottom: 1.5rem; font-size: 1.4rem; }
.f-left p { margin-bottom: 0.8rem; font-size: 0.9rem; color: #888; }
.f-right { text-align: right; }
.f-nav a { margin-left: 20px; color: #999; font-size: 0.9rem; transition: color 0.3s; }
.f-nav a:hover { color: var(--primary-color); }
.copy { margin-top: 40px; font-size: 0.8rem; color: #555; text-align: right; border-top: 1px solid #222; padding-top: 20px; width: 100%; }

/* Responsive */
@media (max-width: 1200px) {
    .prod-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-menu { display: none; }
    .mobile-btn { display: block; }
}

@media (max-width: 768px) {
    .header-wrapper { height: 70px; }
    .hero-slider { margin-top: 70px; height: 60vh; }
    .slide-content h1 { font-size: 2rem; }
    .adv-grid, .process-grid, .case-grid { grid-template-columns: 1fr; }
    .about-flex { flex-direction: column; }
    .nav-contact { display: none; }
    .f-layout { flex-direction: column; text-align: left; }
    .f-right, .copy { text-align: left; }
    .f-nav a { margin-left: 0; margin-right: 15px; }
}

/* FAQ Section Styling */
.faq-item {
    border-bottom: 1px solid #f0f0f0;
    padding: 25px 0;
    transition: background 0.3s;
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-q {
    font-weight: 700;
    font-size: 1.1rem;
    color: #333;
    cursor: pointer;
    position: relative;
    padding-right: 20px;
}
.faq-q::after {
    content: '+';
    position: absolute;
    right: 0;
    color: var(--primary-color);
    font-weight: bold;
}
.faq-item:hover .faq-q {
    color: var(--primary-color);
}
.faq-a {
    margin-top: 15px;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.8;
    display: none; /* Simple JS-free interaction via hover in CSS if desired, or leave open */
    padding-left: 10px;
    border-left: 3px solid #eee;
}
/* Allow hover to show answer for simple interaction */
.faq-item:hover .faq-a {
    display: block;
    animation: fadeIn 0.5s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Footer Links Styling */
.footer-links {
    margin-top: 15px;
}
.footer-links a {
    color: #888;
    text-decoration: none;
    margin-left: 15px;
    font-size: 0.85rem;
    transition: color 0.3s;
}
.footer-links a:hover {
    color: var(--white);
    text-decoration: underline;
}

/* Enhanced Product Card Text */
.prod-info h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: #222;
}
.prod-info span {
    display: block;
    font-size: 0.85rem;
    color: #888;
}

/* Contact Boxes Hover Effect */
#contact div:hover {
    transform: translateY(-5px);
    transition: transform 0.3s;
    border-color: var(--primary-color) !important;
}