/* =============================================
   DOVIK COMPANY - STYLESHEET
   File: css/style.css
   Description: Styles chính cho website Công ty TNHH DOVIK
   Author: DOVIK Team
   ============================================= */
/* ===== RESET & BASE ===== */
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root{
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --light: #f8fafc;
    --white: #ffffff;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --success: #16a34a;
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
}
html{
    scroll-behavior: smooth;
}
body{
    font-family: "Google Sans Flex", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-3);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
}
h1, h2, h3, h4{
    font-weight: 600;
    color: var(--dark);
    line-height: 1.3;
}
a{
    text-decoration: none;
    color: inherit;
}
ul{
    list-style: none;
}
img{
    max-width: 100%;
}
/* ===== VENDORS ===== */
/* font awesome */
.fa, .fa-brands, .fa-classic, .fa-regular, .fa-sharp, .fa-solid, .fab, .far, .fas{
    line-height: inherit;
}
/* ===== UTILITY ===== */
.container{
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section{
    padding: 96px 0;
}
.section-header{
    text-align: center;
    margin-bottom: 60px;
}
.section-tag{
    display: inline-block;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.08);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}
.section-title{
    font-size: 2.5rem;
    color: var(--dark);
    margin-bottom: 15px;
    line-height: 1.3;
}
.section-desc{
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}
.highlight{
    color: var(--primary);
}
/* ===== BUTTONS ===== */
.btn{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}
.btn-primary{
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover{
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}
.btn-outline{
    background: transparent;
    color: var(--dark-3);
    border: 2px solid rgba(15, 23, 42, 0.5);
}
.btn-outline:hover{
    background: rgba(15, 23, 42, 0.06);
    transform: translateY(-2px);
}
.btn-lg{
    padding: 16px 36px;
    font-size: 1.1rem;
}
/* ===== HEADER ===== */
.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}
.header.scrolled{
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}
.header-inner{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
/* Brand / Logo */
.brand{
    display: flex;
    align-items: center;
    gap: 12px;
}
.brand-logo{
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.brand-text{
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.brand-name{
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: 1px;
}
.brand-sub{
    font-size: 0.7rem;
    color: var(--gray);
    font-weight: 500;
    letter-spacing: 0.5px;
}
/* Navigation */
.nav-list{
    display: flex;
    gap: 32px;
}
.nav-link{
    font-weight: 500;
    font-size: 1rem;
    color: var(--dark-2);
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}
.nav-link::after{
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}
.nav-link:hover,
.nav-link.active{
    color: var(--primary);
}
.nav-link:hover::after,
.nav-link.active::after{
    width: 100%;
}
/* Header actions */
.header-actions{
    display: flex;
    align-items: center;
    gap: 20px;
}
.hotline{
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
}
.hotline i{
    font-size: 1.1rem;
}
.hotline:hover{
    color: var(--primary-dark);
}
.nav-toggle{
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}
/* ===== HERO ===== */
.hero{
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--light) 0%, #eef2f7 50%, #dbeafe 100%);
    color: var(--dark-3);
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}
.hero::before{
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after{
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-overlay{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(248, 250, 252, 0.4);
    z-index: 1;
}
.hero-content{
    position: relative;
    z-index: 2;
    max-width: 800px;
}
.hero-tagline{
    display: inline-block;
    background: rgba(96, 165, 250, 0.15);
    border: 1px solid rgba(96, 165, 250, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 25px;
    color: var(--primary);
}
.hero-title{
    font-size: 3.2rem;
    line-height: 1.2;
    margin-bottom: 25px;
    color: var(--dark);
}
.hero-title .highlight{
    color: var(--primary);
}
.hero-desc{
    font-size: 1.15rem;
    color: var(--dark-3);
    max-width: 650px;
    margin: 0 auto 35px;
    line-height: 1.8;
}
.hero-buttons{
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}
.scroll-down{
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--primary);
    font-size: 1.5rem;
    z-index: 2;
    animation: bounce 2s infinite;
}
@keyframes bounce{
    0%, 100%{
        transform: translateX(-50%) translateY(0);
    }
    50%{
        transform: translateX(-50%) translateY(10px);
    }
}
/* ===== STATS ===== */
.stats{
    background: var(--white);
    padding: 60px 0;
    position: relative;
    z-index: 10;
}
.stats-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
}
.stat-item{
    text-align: center;
}
.stat-number{
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    display: inline-block;
}
.stat-plus{
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}
.stat-label{
    font-size: 0.95rem;
    color: var(--gray);
    margin-top: 8px;
}
/* ===== SERVICES ===== */
.services{
    background: var(--light);
}
.services .container{
    max-width: 95%;
}
.services-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.service-card{
    background: var(--white);
    border-radius: 16px;
    padding: 35px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-light);
    position: relative;
    overflow: hidden;
}
.service-card::before{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.service-card:hover{
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.service-card:hover::before{
    transform: scaleX(1);
}
.service-head{
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}
.service-icon{
    width: 64px;
    height: 64px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--primary);
    transition: var(--transition);
}
.service-card:hover .service-icon{
    background: var(--primary);
    color: var(--white);
    transform: rotate(-5deg) scale(1.05);
}
.service-title{
    flex: 1 1 auto;
    width: 1%;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    color: var(--dark);
}
.service-desc{
    font-size: 0.95rem;
    color: var(--gray);
    margin-bottom: 15px;
    line-height: 1.7;
}
.service-list{
    margin-top: 10px;
}
.service-list li{
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--dark-3);
}
.service-list li:not(:last-child){
    margin-bottom: 8px;
}
.service-list li i{
    color: var(--success);
    font-size: 0.8rem;
}
/* ===== ABOUT ===== */
.about-grid{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-visual{
    position: relative;
}
.about-image{
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    border-radius: 20px;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: rgba(30, 41, 59, 0.25);
    position: relative;
    overflow: hidden;
}
.about-image::before{
    content: '';
    position: absolute;
    top: -20%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}
.about-badge{
    position: absolute;
    bottom: 30px;
    left: -20px;
    background: var(--white);
    border-radius: 12px;
    padding: 15px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
}
.about-badge i{
    font-size: 1.8rem;
    color: var(--primary);
}
.about-badge strong{
    display: block;
    font-size: 1rem;
    color: var(--dark);
}
.about-badge span{
    font-size: 0.8rem;
    color: var(--gray);
}
.about-content .section-tag{
    margin-bottom: 15px;
}
.about-intro{
    font-size: 1.1rem;
    color: var(--dark-2);
    margin-bottom: 15px;
}
.about-text{
    color: var(--gray);
    margin-bottom: 30px;
    line-height: 1.8;
}
.about-features{
    display: grid;
    gap: 20px;
}
.about-feature{
    display: flex;
    gap: 15px;
    align-items: flex-start;
}
.about-feature i{
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 5px;
}
.about-feature h4{
    font-size: 1.1rem;
    margin-bottom: 5px;
}
.about-feature p{
    font-size: 0.95rem;
    color: var(--gray);
}
/* ===== WHY US ===== */
.why-us{
    background: var(--light);
    color: var(--dark-3);
}
.why-us .section-tag{
    background: rgba(96, 165, 250, 0.15);
    color: var(--primary);
}
.why-us .section-title{
    color: var(--dark);
}
.why-us .section-desc{
    color: var(--gray);
}
.why-grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.why-card{
    background: var(--white);
    border: 1px solid var(--gray-light);
    border-radius: 16px;
    padding: 35px;
    transition: var(--transition);
    text-align: center;
    box-shadow: var(--shadow);
}
.why-card:hover{
    background: rgba(37, 99, 235, 0.04);
    transform: translateY(-5px);
    border-color: var(--primary);
}
.why-icon{
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--primary);
    margin: 0 auto 20px;
}
.why-card h3{
    color: var(--dark);
    font-size: 1.15rem;
    margin-bottom: 12px;
}
.why-card p{
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
}
/* ===== COMMITMENT ===== */
.commitment-grid{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.commitment-item{
    background: var(--white);
    border-radius: 16px;
    padding: 35px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-light);
    transition: var(--transition);
    position: relative;
}
.commitment-item:hover{
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.commitment-number{
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(37, 99, 235, 0.15);
    margin-bottom: 15px;
    line-height: 1;
}
.commitment-item h3{
    font-size: 1.1rem;
    margin-bottom: 10px;
}
.commitment-item p{
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.7;
}
/* ===== CTA ===== */
.cta{
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--dark-3);
}
.cta-title{
    font-size: 2.2rem;
    color: var(--dark);
    margin-bottom: 15px;
}
.cta-desc{
    font-size: 1.1rem;
    color: var(--dark-3);
    margin-bottom: 30px;
}
.cta-buttons{
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}
.cta .btn-outline{
    border-color: rgba(15, 23, 42, 0.5);
}
/* ===== FOOTER ===== */
.footer{
    background: var(--light);
    color: var(--gray);
    padding-top: 80px;
}
.footer-grid{
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 60px;
}
.footer-brand{
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.footer-brand .brand-logo{
    width: 44px;
    height: 44px;
    font-size: 1.4rem;
}
.footer-brand .brand-name{
    color: var(--dark);
}
.footer-brand .brand-sub{
    color: var(--gray);
}
.footer-desc{
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 25px;
    color: var(--gray);
}
.footer-social{
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-social a{
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: var(--transition);
}
.footer-social a:hover{
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
}
.footer-title{
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.footer-title::after{
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary);
}
.footer-links li:not(:last-child){
    margin-bottom: 10px;
}
.footer-links a{
    display: block;
    color: var(--gray);
    font-size: 0.95rem;
    transition: var(--transition);
}
.footer-links a i{
    display: inline-block;
    vertical-align: middle;
    font-size: 0.7rem;
    color: var(--primary-light);
    margin: -1px 0 1px;
    margin-inline-end: .7em;
}
.footer-links a:hover{
    color: var(--primary);
    padding-left: 5px;
}
.footer-contact li{
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 0.95rem;
    align-items: flex-start;
}
.footer-contact i{
    color: var(--primary);
    font-size: 1rem;
}
.footer-contact a{
    color: var(--gray);
    transition: var(--transition);
}
.footer-contact a:hover{
    color: var(--primary);
}
.footer-bottom{
    border-top: 1px solid var(--gray-light);
    padding: 20px 0;
}
.footer-bottom-inner{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--gray);
}
/* ===== BACK TO TOP ===== */
.back-to-top{
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}
.back-to-top.show{
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover{
    background: var(--primary-dark);
    transform: translateY(-3px);
}
/* ===== MAINTENANCE MODE ===== */
.maintenance-overlay{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--light) 0%, #eef2f7 50%, #dbeafe 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: 40px 24px;
}
.maintenance-card{
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--gray-light);
    backdrop-filter: blur(12px);
    border-radius: 24px;
    padding: 50px 45px;
    max-width: 560px;
    width: 100%;
    text-align: center;
    color: var(--dark-3);
    box-shadow: 0 25px 60px rgba(15, 23, 42, 0.12);
    animation: maintenanceFadeIn 0.6s ease;
}
@keyframes maintenanceFadeIn{
    from{
        opacity: 0;
        transform: translateY(30px);
    }
    to{
        opacity: 1;
        transform: translateY(0);
    }
}
.maintenance-logo{
    margin-bottom: 25px;
}
.maintenance-logo-icon{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 68px;
    height: 68px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 18px;
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}
.maintenance-icon{
    width: 90px;
    height: 90px;
    margin: 0 auto 20px;
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: var(--primary);
    animation: maintenancePulse 2s infinite ease-in-out;
}
@keyframes maintenancePulse{
    0%, 100%{
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(96, 165, 250, 0.3);
    }
    50%{
        transform: scale(1.06);
        box-shadow: 0 0 0 15px rgba(96, 165, 250, 0);
    }
}
.maintenance-title{
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
    line-height: 1.3;
}
.maintenance-desc{
    font-size: 1rem;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 30px;
}
.maintenance-admin{
    border-top: 1px solid var(--gray-light);
    padding-top: 25px;
}
.maintenance-admin-text{
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 15px;
}
.maintenance-form{
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.maintenance-input-wrap{
    position: relative;
    display: flex;
    align-items: center;
}
.maintenance-input-wrap > i{
    position: absolute;
    left: 14px;
    color: var(--gray);
    font-size: 0.9rem;
    pointer-events: none;
}
.maintenance-input{
    width: 100%;
    padding: 13px 45px 13px 40px;
    background: var(--white);
    border: 1px solid var(--gray-light);
    border-radius: 10px;
    color: var(--dark);
    font-size: 0.95rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}
.maintenance-input::placeholder{
    color: var(--gray);
}
.maintenance-input:focus{
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.maintenance-toggle{
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    color: var(--gray);
    font-size: 1rem;
    cursor: pointer;
    padding: 8px;
    transition: var(--transition);
}
.maintenance-toggle:hover{
    color: var(--primary);
}
.maintenance-submit{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}
.maintenance-submit:hover{
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}
.maintenance-error{
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(220, 38, 38, 0.12);
    border: 1px solid rgba(220, 38, 38, 0.3);
    color: #f87171;
    font-size: 0.88rem;
    padding: 10px 14px;
    border-radius: 8px;
    margin-top: 4px;
}
.maintenance-error.show{
    display: flex;
    animation: maintenanceShake 0.4s ease;
}
@keyframes maintenanceShake{
    0%, 100%{
        transform: translateX(0);
    }
    25%{
        transform: translateX(-6px);
    }
    50%{
        transform: translateX(6px);
    }
    75%{
        transform: translateX(-3px);
    }
}
.maintenance-footer{
    margin-top: 25px;
    font-size: 0.8rem;
    color: var(--gray);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1500px){
    .services .container{
        max-width: 100%;
    }
    .services-grid{
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 1200px){
    .services-grid{
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 992px){
    .why-grid{
        grid-template-columns: repeat(2, 1fr);
    }
    .commitment-grid{
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid{
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-visual{
        max-width: 500px;
        margin: 0 auto;
    }
    .footer-grid{
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid{
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px){
    .btn{
        padding: 10px 22px;
    }
    .section{
        padding: 64px 0;
    }
    .section-header{
        margin-bottom: 35px;
    }
    .section-title{
        font-size: 2rem;
    }
    .service-card,
    .commitment-item,
    .why-card{
        padding: 30px 20px;
    }
    .service-head{
        gap: 15px;
    }
    .about-visual{
        width: 100%;
    }
    .maintenance-card{
        padding: 35px 25px;
    }
    .maintenance-logo-icon{
        width: 58px;
        height: 58px;
        font-size: 1.7rem;
    }
    .maintenance-icon{
        width: 75px;
        height: 75px;
        font-size: 1.8rem;
    }
    .maintenance-title{
        font-size: 1.4rem;
    }
    .maintenance-desc{
        font-size: 0.95rem;
    }
    .nav{
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        transition: left 0.3s ease;
        z-index: 999;
        border-top: 1px solid var(--gray-light);
    }
    .nav.active{
        left: 0;
    }
    .nav-list{
        flex-direction: column;
        padding: 10px 15px;
        gap: 0;
        max-height: 100%;
        overflow-x: hidden;
    }
    .nav-link{
        display: block;
        padding: 12px 0;
        border-bottom: 1px solid var(--gray-light);
    }
    .nav-toggle{
        display: block;
        width: 22px;
    }
    .hotline span{
        display: none;
    }
    .hero-title{
        font-size: 2.2rem;
    }
    .hero-desc{
        font-size: 1rem;
    }
    .services-grid{
        grid-template-columns: 1fr;
    }
    .why-grid{
        grid-template-columns: 1fr;
    }
    .commitment-grid{
        grid-template-columns: 1fr;
    }
    .stats-grid{
        grid-template-columns: repeat(2, 1fr);
        padding: 25px 15px;
        gap: 15px;
    }
    .stat-label{
        margin-top: 0;
    }
    .footer{
        padding-top: 60px;
    }
    .footer-grid{
        grid-template-columns: 1fr;
        gap: 30px;
        padding-bottom: 30px;
    }
    .footer-bottom-inner{
        flex-direction: column;
        text-align: center;
    }
    .about-image{
        height: 300px;
        font-size: 5rem;
    }
    .about-badge{
        left: 10px;
        bottom: 15px;
    }
}
@media (max-width: 480px){
    .container{
        padding: 0 16px;
    }
    .hero-title{
        font-size: 1.8rem;
    }
    .hero-buttons{
        flex-direction: column;
        width: 100%;
    }
    .hero-buttons .btn{
        width: 100%;
        justify-content: center;
    }
    .stats-grid{
        grid-template-columns: 1fr 1fr;
    }
    .stat-number{
        font-size: 2rem;
    }
    .cta-buttons{
        flex-direction: column;
        width: 100%;
    }
    .cta-buttons .btn{
        width: 100%;
        justify-content: center;
    }
    .back-to-top{
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}