/* ===== CSS Variables ===== */
:root {
    --green: #2E8B2E;
    --green-dark: #1E6B1E;
    --green-light: #e8f5e9;
    --orange: #F57C00;
    --orange-dark: #E65100;
    --orange-light: #fff3e0;
    --text: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg: #ffffff;
    --bg-gray: #f8f9fa;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 48px;
    width: 48px;
    border-radius: 50%;
    object-fit: cover;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
}

.header.scrolled .logo-text {
    color: var(--green);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: #fff;
    padding: 6px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--orange);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.header.scrolled .nav-link {
    color: var(--text);
}

.header.scrolled .nav-link:hover {
    color: var(--green);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    transition: var(--transition);
    border-radius: 2px;
}

.header.scrolled .menu-toggle span {
    background: var(--text);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 50%, #3da33d 100%);
    padding-top: 72px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(245, 124, 0, 0.1);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    padding: 60px 20px;
    gap: 40px;
}

.hero-text {
    flex: 1;
    text-align: left;
}

.hero-truck {
    flex-shrink: 0;
    animation: truckDrive 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

@keyframes truckDrive {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-truck svg {
    max-width: 100%;
    height: auto;
}

/* 货车颠簸动画 */
.truck-body {
    animation: truckBounce 1.2s ease-in-out infinite;
}

@keyframes truckBounce {
    0%, 100% { transform: translateY(0); }
    40% { transform: translateY(-3px); }
    60% { transform: translateY(-1px); }
    80% { transform: translateY(-2px); }
}

/* 车轮旋转 */
.truck-body circle[r="14"],
.truck-body line {
    transform-origin: center;
}

/* 道路虚线移动 */
.road-lines {
    animation: roadMove 1s linear infinite;
}

@keyframes roadMove {
    from { transform: translateX(0); }
    to { transform: translateX(-34px); }
}

/* 速度线闪烁 */
.speed-lines line:nth-child(1) { animation: speedFlash 0.8s ease-in-out infinite; }
.speed-lines line:nth-child(2) { animation: speedFlash 0.8s ease-in-out 0.15s infinite; }
.speed-lines line:nth-child(3) { animation: speedFlash 0.8s ease-in-out 0.3s infinite; }
.speed-lines line:nth-child(4) { animation: speedFlash 0.8s ease-in-out 0.45s infinite; }

@keyframes speedFlash {
    0%, 100% { opacity: 0.3; transform: translateX(0); }
    50% { opacity: 1; transform: translateX(-12px); }
}

/* 包裹浮动 */
.floating-box.box1 { animation: boxFloat1 3s ease-in-out infinite; }
.floating-box.box2 { animation: boxFloat2 3.5s ease-in-out 0.5s infinite; }
.floating-box.box3 { animation: boxFloat3 4s ease-in-out 1s infinite; }

@keyframes boxFloat1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(5px, -4px); }
}

@keyframes boxFloat2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-4px, -5px); }
}

@keyframes boxFloat3 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(4px, -5px); }
}

/* 尾气动画 */
.exhaust circle:nth-child(1) { animation: exhaustPuff 2s ease-out infinite; }
.exhaust circle:nth-child(2) { animation: exhaustPuff 2s ease-out 0.4s infinite; }
.exhaust circle:nth-child(3) { animation: exhaustPuff 2s ease-out 0.8s infinite; }

@keyframes exhaustPuff {
    0% { opacity: 0.2; transform: translate(0, 0) scale(1); }
    50% { opacity: 0.1; transform: translate(-15px, -8px) scale(1.5); }
    100% { opacity: 0; transform: translate(-30px, -15px) scale(2); }
}

.hero-content h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 2px;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--orange);
    color: #fff;
    border-color: var(--orange);
}

.btn-primary:hover {
    background: var(--orange-dark);
    border-color: var(--orange-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 124, 0, 0.4);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-outline:hover {
    background: #fff;
    color: var(--green);
    transform: translateY(-2px);
}

.hero-decoration {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
}

.hero-decoration svg {
    width: 100%;
    height: 80px;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* ===== Section Common ===== */
.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--green), var(--orange));
    margin: 16px auto 0;
    border-radius: 2px;
}

.section-title-light {
    color: #fff;
}

.section-title-light::after {
    background: linear-gradient(90deg, #fff, var(--orange));
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 50px;
}

.section-desc-light {
    color: rgba(255, 255, 255, 0.85);
}

/* ===== Services ===== */
.services {
    padding: 100px 0;
    background: var(--bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 40px 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--green-light);
}

.service-icon {
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    color: var(--green);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.7;
}

.service-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.service-features li {
    font-size: 13px;
    color: var(--text);
    padding-left: 18px;
    position: relative;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--orange);
}

/* ===== Features ===== */
.features {
    padding: 100px 0;
    background: var(--bg-gray);
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 28px;
    border: 2px solid #ddd;
    border-radius: 50px;
    background: #fff;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-light);
}

.tab-btn:hover {
    border-color: var(--green);
    color: var(--green);
}

.tab-btn.active {
    background: var(--green);
    border-color: var(--green);
    color: #fff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.feature-item {
    background: #fff;
    border-radius: var(--radius);
    padding: 30px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.feature-icon-small {
    margin-bottom: 16px;
}

.feature-item h4 {
    font-size: 17px;
    margin-bottom: 8px;
    color: var(--text);
}

.feature-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Advantages ===== */
.advantages {
    padding: 100px 0;
    background: var(--bg);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-card {
    text-align: center;
    padding: 40px 20px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-6px);
}

.advantage-icon {
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 20px;
    color: var(--green);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 100%);
    position: relative;
}

.contact-card {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 50px 40px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    color: #fff;
}

.contact-item h3 {
    font-size: 15px;
    font-weight: 500;
    opacity: 0.85;
    margin-bottom: 4px;
}

.contact-phone {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
}

.contact-phone:hover {
    color: var(--orange);
}

.contact-time {
    font-size: 22px;
    font-weight: 600;
}

/* ===== Footer ===== */
.footer {
    background: #1a1a1a;
    color: #ccc;
    padding: 60px 0 0;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #333;
}

.footer-logo {
    height: 48px;
    width: 48px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 12px;
}

.footer-slogan {
    font-size: 14px;
    color: #999;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: #999;
    padding: 4px 0;
}

.footer-links a:hover {
    color: var(--orange);
}

.footer-contact p {
    font-size: 14px;
    color: #999;
    padding: 4px 0;
}

.footer-contact a {
    color: var(--orange);
}

.footer-contact a:hover {
    color: #ff9800;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 13px;
    color: #666;
}

.footer-bottom a {
    color: #999;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--orange);
}

/* ===== Animations ===== */

/* Fade in up (default) */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.fade-in:nth-child(2) { transition-delay: 0.1s; }
.fade-in:nth-child(3) { transition-delay: 0.2s; }
.fade-in:nth-child(4) { transition-delay: 0.3s; }
.fade-in:nth-child(5) { transition-delay: 0.35s; }
.fade-in:nth-child(6) { transition-delay: 0.4s; }

/* Fade in from left */
.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Fade in from right */
.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale in */
.scale-in {
    opacity: 0;
    transform: scale(0.85);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Hero text animation */
.hero-content h1 {
    animation: heroSlideUp 1s cubic-bezier(0.22, 1, 0.36, 1) 0.2s both;
}

.hero-subtitle {
    animation: heroSlideUp 1s cubic-bezier(0.22, 1, 0.36, 1) 0.5s both;
}

.hero-buttons {
    animation: heroSlideUp 1s cubic-bezier(0.22, 1, 0.36, 1) 0.8s both;
}

@keyframes heroSlideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hero floating decorations */
.hero::before {
    animation: floatSlow 8s ease-in-out infinite alternate;
}

.hero::after {
    animation: floatSlow 10s ease-in-out 1s infinite alternate-reverse;
}

@keyframes floatSlow {
    from { transform: translate(0, 0); }
    to { transform: translate(30px, -30px); }
}

/* Section title underline grow */
.section-title::after {
    width: 0;
    transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.3s;
}

.section-title.visible::after {
    width: 60px;
}

/* Service card icon hover bounce */
.service-card:hover .service-icon svg {
    animation: iconBounce 0.5s ease;
}

.feature-item:hover .feature-icon-small svg {
    animation: iconBounce 0.5s ease;
}

.advantage-card:hover .advantage-icon svg {
    animation: iconBounce 0.5s ease;
}

@keyframes iconBounce {
    0% { transform: scale(1); }
    30% { transform: scale(1.2); }
    50% { transform: scale(0.95); }
    70% { transform: scale(1.08); }
    100% { transform: scale(1); }
}

/* Button pulse glow */
.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-primary:hover::after {
    width: 300px;
    height: 300px;
}

/* Tab button switch animation */
.tab-btn {
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 100%;
    background: var(--green);
    border-radius: 50px;
    transform: translateX(-50%);
    transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: -1;
}

.tab-btn.active::before {
    width: 100%;
}

/* Contact card shimmer */
.contact-card {
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    50% { left: 150%; }
    100% { left: 150%; }
}

/* Advantage card counter animation */
.advantage-card {
    position: relative;
    overflow: hidden;
}

.advantage-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--green), var(--orange));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.advantage-card:hover::after {
    transform: scaleX(1);
}

/* Nav link hover glow */
.nav-link:hover {
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

.header.scrolled .nav-link:hover {
    text-shadow: none;
}

/* Logo hover spin */
.logo img {
    transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.logo:hover img {
    transform: rotate(360deg);
}

/* Smooth scrollbar color for sections */
.services, .features, .advantages, .contact {
    position: relative;
}

/* Parallax-like subtle bg movement for hero */
.hero {
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Number counter style for contact phone */
.contact-phone {
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.8));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.3s ease;
}

.contact-phone:hover {
    background: linear-gradient(90deg, var(--orange), #ff9800);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: scale(1.05);
    display: inline-block;
}

/* Typing cursor effect for hero title */
.hero-content h1::after {
    content: '|';
    animation: blink 1s step-end 3;
    color: var(--orange);
    font-weight: 300;
}

@keyframes blink {
    50% { opacity: 0; }
}

@keyframes numberPop {
    0% { transform: scale(0.8); opacity: 0; }
    60% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); }
}

/* ===== Modal ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: #fff;
    border-radius: var(--radius);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-lighter);
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text);
}

.modal-icon {
    margin-bottom: 16px;
}

.modal h3 {
    font-size: 22px;
    color: var(--text);
    margin-bottom: 24px;
}

.modal-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.modal-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-gray);
    border-radius: 8px;
}

.modal-label {
    font-size: 14px;
    color: var(--text-light);
}

.modal-phone {
    font-size: 20px;
    font-weight: 700;
    color: var(--green);
}

.modal-phone:hover {
    color: var(--orange);
}

.modal-time {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
}

.modal-btn {
    width: 100%;
    text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-text {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-truck svg {
        width: 360px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-truck {
        display: none;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .section-title {
        font-size: 28px;
    }

    .nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .nav.open {
        display: flex;
    }

    .nav-link {
        color: var(--text) !important;
        padding: 14px 0;
        border-bottom: 1px solid #f0f0f0;
        font-size: 16px;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .tabs {
        gap: 8px;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .contact-card {
        padding: 30px 20px;
    }

    .contact-phone {
        font-size: 24px;
    }

    .contact-time {
        font-size: 18px;
    }

    .services,
    .features,
    .advantages,
    .contact {
        padding: 70px 0;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 26px;
    }

    .hero-content {
        padding: 40px 10px;
    }

    .btn {
        padding: 12px 28px;
        font-size: 14px;
    }

    .service-features {
        grid-template-columns: 1fr;
    }
}