:root {
    --primary-deep: #060e1f;
    --primary: #0f1f3d;
    --primary-light: #1a3558;
    --primary-surface: #152240;
    --accent-gold: #c8963e;
    --accent-gold-light: #d4a853;
    --accent-gold-pale: #f5ecd7;
    --accent-gold-bright: #e0b860;
    --white: #ffffff;
    --off-white: #f8f9fb;
    --light-gray: #eef0f4;
    --mid-gray: #d1d5db;
    --text-dark: #1a1d24;
    --text-body: #3a3f4a;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    --success: #10b981;
    --blue-accent: #2563eb;
    --soft-blue: #3b82f6;
    --shadow-sm: 0 1px 2px rgba(6, 14, 31, 0.06);
    --shadow-md: 0 4px 16px rgba(6, 14, 31, 0.08);
    --shadow-lg: 0 12px 40px rgba(6, 14, 31, 0.12);
    --shadow-xl: 0 20px 60px rgba(6, 14, 31, 0.16);
    --shadow-gold: 0 8px 32px rgba(200, 150, 62, 0.25);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --max-width: 1280px;
    --nav-height: 76px;
    --nav-height-scrolled: 66px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-sans);
    color: var(--text-body);
    background-color: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
    opacity: 1;
    transition: opacity 0.5s ease;
}
body.loading {
    opacity: 0;
}
body.loaded {
    opacity: 1;
}

.preloader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: var(--primary-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    transition: opacity 0.6s ease, visibility 0.6s ease;
    pointer-events: all;
}
.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}
.preloader-logo {
    width: 70px;
    height: 70px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent-gold);
    border-radius: 50%;
    animation: preloaderSpin 1s linear infinite;
    margin-bottom: 1.5rem;
    position: relative;
}
.preloader-logo::after {
    content: '';
    position: absolute;
    inset: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-bottom-color: var(--accent-gold-light);
    animation: preloaderSpin 1.5s linear infinite reverse;
}
@keyframes preloaderSpin { to { transform: rotate(360deg); } }
.preloader-text {
    color: rgba(255, 255, 255, 0.7);
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.08em;
    animation: preloaderPulse 1.5s ease-in-out infinite;
}
@keyframes preloaderPulse { 0%,100%{opacity:0.4;} 50%{opacity:1;} }

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--accent-gold-light), #e8c97a);
    z-index: 1001;
    transition: width 0.1s linear;
    border-radius: 0 2px 0 0;
    box-shadow: 0 0 12px rgba(200,150,62,0.5);
}
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-deep);
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.2);
    cursor: pointer;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-smooth);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    box-shadow: var(--shadow-lg);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}
.back-to-top svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}
.back-to-top:hover svg {
    transform: translateY(-2px);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--off-white); }
::-webkit-scrollbar-thumb { background: var(--mid-gray); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }
::selection { background-color: var(--accent-gold); color: var(--white); }

/* NAVIGATION */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0 2rem;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-smooth);
    background: transparent;
}
.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 2px 24px rgba(6,14,31,0.08);
    height: var(--nav-height-scrolled);
}
.navbar .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    z-index: 1001;
    flex-shrink: 0;
    position: relative;
}
.logo-img {
    height: 50px;
    width: auto;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    object-fit: contain;
    background: transparent;
    transition: all var(--transition-smooth);
    display: block;
}
/* 默认深色背景：显示 logo2.png */
.logo-dark { display: block; }
.logo-light { display: none; }

/* 滚动后浅色背景：显示 logo.png */
.navbar.scrolled .logo-dark { display: none; }
.navbar.scrolled .logo-light { display: block; }

.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a {
    text-decoration: none;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
    letter-spacing: 0.01em;
}
.navbar.scrolled .nav-links a { color: var(--text-dark); }
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition-smooth);
    border-radius: 1px;
}
.nav-links a:hover::after, .nav-links a:focus-visible::after { width: 100%; }
.nav-links a:hover { color: var(--accent-gold-light) !important; }
.navbar.scrolled .nav-links a:hover { color: var(--accent-gold) !important; }
.nav-cta {
    display: inline-block;
    padding: 10px 22px;
    background: var(--accent-gold);
    color: var(--white) !important;
    border-radius: 50px;
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    transition: all var(--transition-smooth) !important;
    text-decoration: none;
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.nav-cta:hover {
    background: var(--accent-gold-light) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
    color: var(--white) !important;
}
.nav-cta::after { display: none !important; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; z-index: 1001; background: none; border: none; padding: 6px; }
.hamburger span { display: block; width: 28px; height: 2.5px; background: var(--white); border-radius: 2px; transition: all var(--transition-smooth); }
.navbar.scrolled .hamburger span { background: var(--primary-deep); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* HERO */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(170deg, #040b1a 0%, #060e1f 25%, #0a1628 50%, #0f1f3d 75%, #0d1a35 100%);
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; z-index: 1; }
.hero-particle { position: absolute; border-radius: 50%; background: rgba(255,255,255,0.5); animation: particleFloat linear infinite; }
@keyframes particleFloat { 0%{ transform: translateY(0) translateX(0) scale(1); opacity:0; } 10%{opacity:1;} 90%{opacity:1;} 100%{ transform: translateY(-100vh) translateX(60px) scale(0.3); opacity:0; } }
.hero-bg-pattern { position: absolute; inset: 0; pointer-events: none; opacity: 0.05; background-image: radial-gradient(circle at 20% 30%, #fff 1px, transparent 1px), radial-gradient(circle at 75% 60%, #fff 1px, transparent 1px), radial-gradient(circle at 40% 80%, #fff 0.5px, transparent 0.5px), radial-gradient(circle at 60% 20%, #fff 0.8px, transparent 0.8px); background-size: 80px 80px, 100px 100px, 60px 60px, 90px 90px; }
.hero-orb { position: absolute; border-radius: 50%; pointer-events: none; filter: blur(90px); opacity: 0.1; }
.hero-orb.orb1 { width: 550px; height: 550px; background: #2563eb; top: -18%; right: -12%; animation: floatOrb 14s ease-in-out infinite; }
.hero-orb.orb2 { width: 380px; height: 380px; background: var(--accent-gold); bottom: -15%; left: -10%; animation: floatOrb 18s ease-in-out infinite reverse; opacity: 0.07; }
@keyframes floatOrb { 0%,100%{ transform: translate(0,0) scale(1); } 25%{ transform: translate(50px,-40px) scale(1.1); } 50%{ transform: translate(-30px,30px) scale(0.9); } 75%{ transform: translate(20px,-20px) scale(1.05); } }
.hero-content { position: relative; z-index: 3; text-align: center; max-width: 900px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.15); border-radius: 50px; color: var(--accent-gold-light); font-weight: 500; font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 1.5rem; animation: fadeInUp 0.8s ease-out; }
.hero h1 { font-family: var(--font-display); font-size: clamp(2.6rem, 5.5vw, 4.4rem); font-weight: 700; color: var(--white); line-height: 1.12; margin-bottom: 1.5rem; }
.hero h1 .gold-text { color: var(--accent-gold-light); }
.hero-subtitle { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: rgba(255,255,255,0.7); max-width: 650px; margin: 0 auto 2.5rem; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 30px; font-weight: 600; font-size: 1rem; border-radius: 50px; text-decoration: none; cursor: pointer; border: none; transition: all 0.3s; }
.btn-primary { background: var(--accent-gold); color: var(--white); }
.btn-primary:hover { background: var(--accent-gold-light); transform: translateY(-3px); box-shadow: var(--shadow-gold); }
.btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.35); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.06); transform: translateY(-3px); }

/* SECTIONS */
.section { padding: 5rem 2rem; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-tag { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-gold); margin-bottom: 0.75rem; }
.section-title { font-family: var(--font-display); font-size: clamp(2rem, 3.5vw, 2.8rem); font-weight: 700; color: var(--primary-deep); margin-bottom: 1rem; }
.section-desc { font-size: 1.05rem; color: var(--text-light); max-width: 600px; margin: 0 auto; }
.container { max-width: var(--max-width); margin: 0 auto; }

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.about-image-wrapper { position: relative; border-radius: var(--radius-xl); overflow: hidden; aspect-ratio: 4/3; box-shadow: var(--shadow-lg); background: #e8ecf2; }
.about-image-wrapper img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-image-badge { position: absolute; bottom: 20px; right: 20px; background: var(--white); padding: 14px 20px; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); text-align: center; font-weight: 700; z-index: 2; }
.about-image-badge .badge-number { font-size: 2rem; color: var(--accent-gold); font-family: var(--font-display); }
.about-text h3 { font-family: var(--font-display); font-size: 1.8rem; color: var(--primary-deep); margin-bottom: 1.2rem; }
.about-features { list-style: none; display: grid; gap: 0.8rem; margin-top: 1.5rem; }
.about-features li { display: flex; align-items: flex-start; gap: 10px; font-weight: 500; color: var(--text-dark); }
.about-features .check-icon { width: 22px; height: 22px; background: var(--accent-gold-pale); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--accent-gold); flex-shrink: 0; font-size: 0.75rem; }

/* SERVICES REDESIGN */
.services-section {
    background: var(--off-white);
    position: relative;
    overflow: hidden;
}
.services-section::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at 25% 30%, rgba(200,150,62,0.03) 0%, transparent 45%),
                radial-gradient(circle at 75% 70%, rgba(37,99,235,0.03) 0%, transparent 45%);
}
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}
.service-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.8rem 2rem 2.2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    position: relative;
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}
.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(200,150,62,0.2);
}
.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}
.service-card:hover::after { transform: scaleX(1); }
.service-card.materials::after { background: #4f46e5; }
.service-card.chemical::after { background: #d97706; }
.service-card.biomedical::after { background: #059669; }

.service-icon-wrap {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.8rem;
    font-size: 2rem;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
}
.service-card.materials .service-icon-wrap { background: #eef2ff; color: #4f46e5; }
.service-card.chemical .service-icon-wrap { background: #fef3e4; color: #d97706; }
.service-card.biomedical .service-icon-wrap { background: #ecfdf5; color: #059669; }

.service-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-deep);
    margin-bottom: 0.6rem;
    transition: color 0.3s;
}
.service-card p {
    font-size: 0.98rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.2rem;
    flex: 1;
}
.service-card .service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1.8rem;
}
.service-tag {
    font-size: 0.7rem;
    padding: 6px 14px;
    background: var(--off-white);
    border-radius: 50px;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s;
    border: 1px solid transparent;
}
.service-card:hover .service-tag {
    background: var(--white);
    border-color: var(--mid-gray);
    color: var(--text-body);
}
.service-link {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent-gold);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s;
    text-decoration: none;
    letter-spacing: 0.01em;
}
.service-link span { transition: transform 0.3s; }
.service-card:hover .service-link { gap: 10px; }
.service-card:hover .service-link span { transform: translateX(3px); }

/* EQUIPMENT SECTION */
.equipment-section {
    background: linear-gradient(175deg, #060e1f 0%, #0a1628 30%, #0f1f3d 60%, #0d1a35 100%);
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem;
}
.equipment-section::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.03;
    background-image: radial-gradient(circle at 15% 25%, #fff 1px, transparent 1px), radial-gradient(circle at 70% 55%, #fff 0.8px, transparent 0.8px), radial-gradient(circle at 35% 75%, #fff 0.6px, transparent 0.6px), radial-gradient(circle at 80% 15%, #fff 1.2px, transparent 1.2px);
    background-size: 70px 70px, 90px 90px, 55px 55px, 100px 100px;
}
.equipment-section .section-title { color: var(--white); }
.equipment-section .section-desc { color: rgba(255,255,255,0.65); }
.equipment-section .section-tag { color: var(--accent-gold-light); }
.equipment-orbs { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.equipment-orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.06; }
.equipment-orb.eq-orb1 { width: 400px; height: 400px; background: #3b82f6; top: -10%; left: -8%; animation: floatOrb 16s ease-in-out infinite; }
.equipment-orb.eq-orb2 { width: 320px; height: 320px; background: var(--accent-gold); bottom: -12%; right: -6%; animation: floatOrb 20s ease-in-out infinite reverse; opacity: 0.05; }
.equipment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.8rem; position: relative; z-index: 1; }
.equipment-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-smooth);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.equipment-card:hover {
    transform: translateY(-8px);
    border-color: rgba(200,150,62,0.45);
    box-shadow: 0 16px 48px rgba(0,0,0,0.35), 0 0 0 1px rgba(200,150,62,0.15) inset;
    background: rgba(255,255,255,0.06);
}
.equipment-img-wrap { position: relative; width: 100%; aspect-ratio: 16 / 10; overflow: hidden; background: rgba(255,255,255,0.03); }
.equipment-img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.6s ease; }
.equipment-card:hover .equipment-img-wrap img { transform: scale(1.06); }
.equipment-img-placeholder {
    width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 8px; position: relative;
}
.equipment-img-placeholder .placeholder-icon { font-size: 3rem; opacity: 0.7; transition: all var(--transition-smooth); }
.equipment-card:hover .equipment-img-placeholder .placeholder-icon { opacity: 1; transform: scale(1.1); }
.equipment-img-placeholder .placeholder-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: rgba(255,255,255,0.5); font-weight: 500; }
.placeholder-bg-1 { background: linear-gradient(135deg, #1a2a4a 0%, #1e3558 50%, #162540 100%); }
.placeholder-bg-2 { background: linear-gradient(135deg, #1e2a3d 0%, #223550 50%, #182538 100%); }
.placeholder-bg-3 { background: linear-gradient(135deg, #1d2538 0%, #253248 50%, #181f30 100%); }
.placeholder-bg-4 { background: linear-gradient(135deg, #1f2b42 0%, #263958 50%, #19223a 100%); }
.placeholder-bg-5 { background: linear-gradient(135deg, #1c2840 0%, #24344e 50%, #161e32 100%); }
.placeholder-bg-6 { background: linear-gradient(135deg, #1e2840 0%, #22304c 50%, #172030 100%); }
.equipment-card-body { padding: 1.5rem 1.5rem 1.8rem; }
.equipment-card-body h4 { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 0.35rem; }
.equipment-card-body .equipment-model { font-size: 0.8rem; color: var(--accent-gold-light); font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase; margin-bottom: 0.6rem; }
.equipment-card-body p { font-size: 0.9rem; color: rgba(255,255,255,0.6); line-height: 1.5; margin-bottom: 1rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; white-space: normal; }
.equipment-specs { display: flex; flex-wrap: wrap; gap: 8px; }
.equipment-spec { font-size: 0.7rem; padding: 5px 12px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 50px; color: rgba(255,255,255,0.7); font-weight: 500; }
.equipment-card:hover .equipment-spec { border-color: rgba(200,150,62,0.3); background: rgba(200,150,62,0.08); color: rgba(255,255,255,0.9); }

/* TESTIMONIALS */
.testimonials-section { background: var(--off-white); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.testimonial-card { background: var(--white); border-radius: var(--radius-xl); padding: 2rem; box-shadow: var(--shadow-sm); transition: all 0.3s; }
.testimonial-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }
.testimonial-stars { color: var(--accent-gold); margin-bottom: 1rem; letter-spacing: 2px; font-size: 1.1rem; }
.testimonial-quote { font-style: italic; color: var(--text-body); margin-bottom: 1.5rem; line-height: 1.6; }
.testimonial-author { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--light-gray); padding-top: 1rem; }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; background: var(--primary-light); color: white; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.testimonial-author strong { color: var(--text-dark); font-size: 0.95rem; }
.testimonial-author small { color: var(--text-muted); font-size: 0.8rem; }

/* CONTACT */
.contact-section { background: var(--white); padding: 6rem 2rem; }
.contact-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    max-width: var(--max-width);
    margin: 0 auto;
}
.contact-card-enhanced {
    background: var(--off-white);
    border-radius: var(--radius-xl);
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
    flex: 1 1 280px;
    max-width: 400px;
}
.contact-card-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 0 0 3px 3px;
    transition: width var(--transition-smooth);
}
.contact-card-enhanced:hover::before { width: 60%; }
.contact-card-enhanced:hover {
    background: var(--white);
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
    border-color: rgba(200,150,62,0.2);
}
.contact-card-icon-wrap {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--accent-gold-pale);
    color: var(--accent-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.4rem;
    font-size: 1.8rem;
    transition: all var(--transition-smooth);
}
.contact-card-enhanced:hover .contact-card-icon-wrap {
    background: var(--accent-gold);
    color: var(--white);
    box-shadow: var(--shadow-gold);
    transform: scale(1.08);
}
.contact-card-enhanced h4 { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--primary-deep); margin-bottom: 0.5rem; }
.contact-card-enhanced .contact-detail { font-size: 1rem; color: var(--text-light); line-height: 1.6; font-weight: 500; }
.contact-card-enhanced .contact-sub { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.4rem; }

/* FOOTER */
.site-footer { background: var(--primary-deep); color: rgba(255,255,255,0.7); padding: 4rem 2rem 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 2rem; max-width: var(--max-width); margin: 0 auto; }
.footer-grid h4 { color: var(--white); font-weight: 600; margin-bottom: 1rem; font-size: 1rem; }
.footer-grid ul { list-style: none; }
.footer-grid ul li { margin-bottom: 0.5rem; font-size: 0.9rem; color: rgba(255,255,255,0.55); }
.footer-bottom { max-width: var(--max-width); margin: 2rem auto 0; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); display: flex; justify-content: space-between; font-size: 0.85rem; color: rgba(255,255,255,0.4); }

.reveal { opacity: 0; transform: translateY(30px); transition: 0.7s ease; }
.reveal.revealed { opacity: 1; transform: translateY(0); }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr 1fr; }
    .services-grid, .testimonials-grid, .equipment-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; } .hamburger { display: flex; }
    .services-grid, .testimonials-grid, .equipment-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
    .hero { padding: 5rem 1.5rem 3rem; }
    .section { padding: 3rem 1.5rem; }
    .equipment-section { padding: 4rem 1.5rem; }
    .contact-section { padding: 4rem 1.5rem; }
    .contact-card-enhanced { max-width: none; }
}

.nav-overlay { display: none; position: fixed; inset: 0; background: rgba(6,14,31,0.96); z-index: 999; flex-direction: column; align-items: center; justify-content: center; gap: 2rem; }
.nav-overlay.active { display: flex; }
.nav-overlay a { color: var(--white); font-size: 1.3rem; text-decoration: none; font-weight: 500; letter-spacing: 0.03em; transition: color var(--transition-fast); }
.nav-overlay a:hover { color: var(--accent-gold-light); }
.nav-overlay .nav-cta-mobile { padding: 12px 28px; background: var(--accent-gold); color: var(--white) !important; border-radius: 50px; font-weight: 600; font-size: 1rem !important; }
.equipment-card-body h4 a{    text-decoration: none;

    color: #FFF;}