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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.6;
    background: #f5f7fa;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* ==================== Header / Navigation ==================== */
.top-bar {
    background: #1a1a2e;
    color: #a0a0b0;
    font-size: 12px;
    padding: 6px 0;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar a {
    color: #a0a0b0;
}

.top-bar a:hover {
    color: #4fc3f7;
}

header {
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #1976d2, #4fc3f7);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
}

.logo-text h1 {
    font-size: 20px;
    color: #1a1a2e;
    line-height: 1.2;
}

.logo-text p {
    font-size: 11px;
    color: #888;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    gap: 0;
}

nav ul li a {
    display: block;
    padding: 28px 24px;
    font-size: 15px;
    color: #444;
    font-weight: 500;
    position: relative;
    transition: all 0.3s;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: #1976d2;
    border-radius: 2px;
    transition: width 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
    color: #1976d2;
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 60%;
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #333;
    transition: 0.3s;
}

/* ==================== Banner / Hero ==================== */
.banner {
    background: linear-gradient(135deg, #0d1b3e 0%, #1a3a6e 50%, #1976d2 100%);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(79, 195, 247, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(25, 118, 210, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.banner-content {
    position: relative;
    z-index: 1;
    color: #fff;
    max-width: 700px;
}

.banner h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
    letter-spacing: 2px;
}

.banner p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 35px;
    line-height: 1.8;
}

.banner-btns {
    display: flex;
    gap: 16px;
}

.btn-primary {
    display: inline-block;
    padding: 14px 36px;
    background: #4fc3f7;
    color: #0d1b3e;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #81d4fa;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 195, 247, 0.4);
}

.btn-outline {
    display: inline-block;
    padding: 14px 36px;
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ==================== Section Common ==================== */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 32px;
    color: #1a1a2e;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #1976d2;
    margin: 12px auto 0;
    border-radius: 2px;
}

.section-title p {
    color: #888;
    font-size: 15px;
    margin-top: 8px;
}

/* ==================== Features Section (Home) ==================== */
.features {
    background: #fff;
}

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

.feature-card {
    text-align: center;
    padding: 40px 25px;
    border-radius: 12px;
    background: #f8f9fc;
    transition: all 0.4s;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(25, 118, 210, 0.1);
    border-color: #e3f2fd;
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1976d2, #4fc3f7);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
}

.feature-card h3 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.feature-card p {
    color: #777;
    font-size: 13px;
    line-height: 1.7;
}

/* ==================== Stats Section ==================== */
.stats {
    background: linear-gradient(135deg, #1976d2, #0d47a1);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
    color: #fff;
}

.stat-item h3 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== Products Preview (Home) ==================== */
.products-preview {
    background: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: #f8f9fc;
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
    border: 1px solid #eee;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #1976d2, #4fc3f7);
    opacity: 0;
    transition: opacity 0.3s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card .product-num {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.product-card h3 {
    font-size: 15px;
    color: #1a1a2e;
    margin-bottom: 8px;
    line-height: 1.5;
}

.product-card p {
    color: #888;
    font-size: 13px;
    line-height: 1.6;
}

/* ==================== News Preview (Home) ==================== */
.news-preview {
    background: #f5f7fa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid #eee;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.news-card-body {
    padding: 24px;
}

.news-date {
    display: inline-block;
    color: #1976d2;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-card h3 {
    font-size: 16px;
    color: #1a1a2e;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-card p {
    color: #777;
    font-size: 13px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==================== About Page ==================== */
.page-banner {
    background: linear-gradient(135deg, #0d1b3e, #1a3a6e);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-banner h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-banner p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text h3 {
    font-size: 24px;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 14px;
}

.about-image {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-radius: 16px;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #1976d2;
}

/* Company milestones */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e3f2fd;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-dot {
    width: 16px;
    height: 16px;
    background: #1976d2;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #1976d2;
}

.timeline-content {
    width: 45%;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 5%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 5%;
}

.timeline-content h4 {
    color: #1976d2;
    font-size: 14px;
    margin-bottom: 6px;
}

.timeline-content p {
    color: #666;
    font-size: 13px;
}

/* ==================== Products Page ==================== */
.product-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.category-btn {
    padding: 10px 24px;
    border: 1px solid #ddd;
    border-radius: 25px;
    background: #fff;
    color: #666;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.category-btn:hover,
.category-btn.active {
    background: #1976d2;
    color: #fff;
    border-color: #1976d2;
}

.products-full-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.product-full-card {
    background: #fff;
    border-radius: 10px;
    padding: 24px;
    border: 1px solid #eee;
    transition: all 0.3s;
}

.product-full-card:hover {
    border-color: #1976d2;
    box-shadow: 0 8px 25px rgba(25, 118, 210, 0.1);
}

.product-full-card .product-num {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    width: 36px;
    height: 36px;
    line-height: 36px;
    text-align: center;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 12px;
}

.product-full-card h3 {
    font-size: 15px;
    color: #1a1a2e;
    margin-bottom: 8px;
    line-height: 1.5;
}

.product-full-card .product-tag {
    display: inline-block;
    padding: 3px 10px;
    background: #f0f7ff;
    color: #1976d2;
    border-radius: 4px;
    font-size: 12px;
    margin-top: 8px;
}

/* ==================== News Page ==================== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-list-item {
    display: flex;
    gap: 24px;
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.3s;
}

.news-list-item:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
}

.news-list-date {
    min-width: 80px;
    text-align: center;
    padding: 12px;
    background: #f8f9fc;
    border-radius: 8px;
}

.news-list-date .day {
    font-size: 28px;
    font-weight: 700;
    color: #1976d2;
    line-height: 1;
}

.news-list-date .month {
    font-size: 12px;
    color: #888;
    margin-top: 4px;
}

.news-list-body h3 {
    font-size: 18px;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.news-list-body p {
    color: #777;
    font-size: 14px;
    line-height: 1.7;
}

/* ==================== Contact Page ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid #eee;
}

.contact-info h3 {
    font-size: 22px;
    color: #1a1a2e;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item-icon {
    width: 44px;
    height: 44px;
    background: #e3f2fd;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1976d2;
    font-size: 18px;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-size: 14px;
    color: #1a1a2e;
    margin-bottom: 4px;
}

.contact-item-text p {
    color: #777;
    font-size: 14px;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid #eee;
}

.contact-form h3 {
    font-size: 22px;
    color: #1a1a2e;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #444;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
    outline: none;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: #1976d2;
    box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.1);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-submit {
    padding: 14px 40px;
    background: #1976d2;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.form-submit:hover {
    background: #1565c0;
    transform: translateY(-1px);
}

/* ==================== Footer ==================== */
footer {
    background: #0d1b3e;
    color: rgba(255, 255, 255, 0.7);
    padding: 50px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-about h3 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-about p {
    font-size: 13px;
    line-height: 1.8;
}

.footer-links h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 16px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    transition: color 0.3s;
}

.footer-links ul li a:hover {
    color: #4fc3f7;
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

/* ==================== 话费充值系统板块 ==================== */
.recharge-section {
    background: linear-gradient(135deg, #0a1628 0%, #1a2d5a 50%, #0d1f44 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.recharge-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(79, 195, 247, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(25, 118, 210, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(129, 212, 250, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.recharge-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.recharge-badge {
    display: inline-block;
    background: linear-gradient(135deg, #4fc3f7, #1976d2);
    color: #fff;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.recharge-header h2 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 2px;
}

.recharge-header h2 span {
    color: #4fc3f7;
}

.recharge-header .subtitle {
    color: rgba(255, 255, 255, 0.6);
    font-size: 15px;
    letter-spacing: 4px;
}

/* 服务企业横幅 */
.recharge-served-banner {
    margin-top: 18px;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    background: rgba(79, 195, 247, 0.1);
    border: 1px solid rgba(79, 195, 247, 0.25);
    border-radius: 8px;
    padding: 10px 22px;
}

.recharge-served-banner .served-count {
    color: #4fc3f7;
    font-size: 26px;
    font-weight: 800;
    line-height: 1;
}

.recharge-served-banner .served-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.4;
}

.recharge-version-tag {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b35, #ff8f65);
    color: #fff;
    padding: 4px 16px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    margin-top: 12px;
}

/* 核心优势高亮标签 */
.hl {
    display: inline-block;
    background: rgba(79, 195, 247, 0.18);
    color: #4fc3f7;
    padding: 1px 8px;
    border-radius: 3px;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
}

.hl-warm {
    display: inline-block;
    background: rgba(255, 107, 53, 0.18);
    color: #ff8f65;
    padding: 1px 8px;
    border-radius: 3px;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
}

.hl-green {
    display: inline-block;
    background: rgba(76, 175, 80, 0.18);
    color: #81c784;
    padding: 1px 8px;
    border-radius: 3px;
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
}

.recharge-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.recharge-features {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 32px;
    backdrop-filter: blur(10px);
}

.recharge-features h3 {
    color: #4fc3f7;
    font-size: 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.recharge-features h3::before {
    content: '';
    width: 4px;
    height: 20px;
    background: #4fc3f7;
    border-radius: 2px;
}

.recharge-features ul {
    list-style: none;
}

.recharge-features ul li {
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    line-height: 1.8;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.recharge-features ul li:last-child {
    border-bottom: none;
}

.recharge-features ul li .num {
    color: #4fc3f7;
    font-weight: 700;
    min-width: 22px;
}

.recharge-specs {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.spec-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px 24px;
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.spec-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(79, 195, 247, 0.3);
    transform: translateX(5px);
}

.spec-card .spec-label {
    color: #4fc3f7;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.spec-card .spec-value {
    color: #fff;
    font-size: 15px;
    line-height: 1.6;
}

.spec-card.price-card {
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.15), rgba(25, 118, 210, 0.15));
    border-color: rgba(79, 195, 247, 0.3);
}

.spec-card.price-card .spec-value {
    font-size: 24px;
    font-weight: 700;
    color: #4fc3f7;
}

.spec-card.price-card .spec-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    margin-top: 8px;
    line-height: 1.6;
}

/* ==================== Back to Top ==================== */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 44px;
    height: 44px;
    background: #1976d2;
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #1565c0;
    transform: translateY(-3px);
}

/* ==================== Loading Animation ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* ==================== Responsive ==================== */
@media (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
}

@media (max-width: 992px) {
    .recharge-content {
        grid-template-columns: 1fr;
    }

    .recharge-header h2 {
        font-size: 28px;
    }

    .recharge-served-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

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

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

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

    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .banner h2 {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    nav ul {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    }

    nav ul.open {
        display: flex;
    }

    nav ul li a {
        padding: 16px 24px;
        border-bottom: 1px solid #f0f0f0;
    }

    nav ul li a::after {
        display: none;
    }

    .features-grid,
    .stats-grid,
    .products-grid,
    .news-grid,
    .products-full-grid {
        grid-template-columns: 1fr;
    }

    .banner {
        padding: 60px 0;
    }

    .banner h2 {
        font-size: 26px;
    }

    .banner p {
        font-size: 15px;
    }

    .banner-btns {
        flex-direction: column;
    }

    .section {
        padding: 50px 0;
    }

    .section-title h2 {
        font-size: 24px;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-dot {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: row;
        padding-left: 50px;
    }

    .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        width: 100%;
        margin: 0;
    }
}