/* ================= css/style.css ================= */

/* ================= 基础变量与重置 ================= */
:root {
    --brand: #1e3a8a; /* 科技深蓝 */
    --brand-dark: #172554;
    --accent: #e60012; /* 亿红 */
    --accent-dark: #b91c1c;
    --purple-red: #AB64CF; /* 高级紫红色 (Alipay页面专属主题) */
    --purple-red-dark: #831843;
    --text-main: #1f2937;
    --text-muted: #4b5563;
    --bg-light: #f9fafb;
    --border-color: #f3f4f6;
    --font-sans: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background: #fff;
    padding-top: 80px;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.svg-icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

/* ================= 顶部导航栏 ================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: #fff;
    z-index: 50;
    display: flex;
    align-items: center;
    transition: box-shadow 0.3s;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* 【核心修改1】：加上 relative 相对定位，为中间的导航链接绝对居中做参考 */
.nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100%;
    position: relative;
}

.logo img {
    height: 50px;
    object-fit: contain;
}

/* 【核心修改2】：使用绝对定位，让主导航菜单完美物理居中 */
.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
    height: 100%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-item {
    font-size: 17px;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.nav-item.active {
    color: var(--brand);
    font-weight: bold;
    border-bottom: 3px solid var(--brand);
}

.nav-item:hover {
    color: var(--accent);
}

/* 【核心修改3】：去掉左侧外边距，因为它现在天然靠右 */
.nav-actions {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: 0.3s;
}

.btn-outline {
    border: 1px solid var(--brand);
    color: var(--brand);
}

.btn-outline:hover {
    background: var(--bg-light);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(230, 0, 18, 0.3);
    border: none;
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 480px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    display: flex;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: 0.3s;
    pointer-events: none;
}

.nav-item.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.nav-item.has-dropdown::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
}

.dropdown-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.dropdown-col:first-child {
    border-right: 1px solid var(--border-color);
    padding-right: 20px;
    margin-right: 20px;
}

.dropdown-title {
    font-size: 14px;
    color: #9ca3af;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 8px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-main);
    padding: 8px 0;
}

.dropdown-item .icon-box {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: 0.3s;
}

.dropdown-item:hover {
    color: var(--accent);
}

.dropdown-item:hover .icon-box {
    transform: scale(1.1);
}

/* 移动端汉堡菜单 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    flex-direction: column;
}

.mobile-menu.active {
    display: flex;
}

.mobile-item {
    padding: 15px 24px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-weight: 500;
}

.mobile-sub-item {
    padding: 10px 24px 10px 40px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-actions {
    padding: 20px 24px;
    display: flex;
    gap: 15px;
    background: var(--bg-light);
}

/* ================= Banner 通用 ================= */
.img-cover, .slide-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    position: absolute;
    top: 0;
    left: 0;
}

.hero-slider {
    height: 650px;
    position: relative;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(30, 58, 138, 0.95) 0%, rgba(30, 58, 138, 0.5) 60%, rgba(0, 0, 0, 0.1) 100%);
}

.slide-overlay.purple-theme {
    background: linear-gradient(to right, rgba(171, 100, 207, 0.95) 0%, rgba(171, 100, 207, 0.6) 60%, rgba(0, 0, 0, 0.1) 100%);
}

.slide-content {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 10;
    color: #fff;
}

.tag {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 6px 16px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.slide-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.slide-subtitle {
    font-size: 24px;
    font-weight: 300;
    border-left: 4px solid var(--accent);
    padding-left: 16px;
    margin-bottom: 40px;
    color: #e5e7eb;
}

.btn-large {
    padding: 14px 40px;
    font-size: 18px;
    background: var(--brand);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: 0.3s;
    font-weight: bold;
}

.btn-large:hover {
    background: var(--brand-dark);
    transform: translateY(-2px);
}

/* Swiper 覆盖 */
.swiper-button-next, .swiper-button-prev {
    color: white !important;
    background: rgba(0, 0, 0, 0.2);
    width: 50px !important;
    height: 70px !important;
    border-radius: 8px;
    transition: 0.3s;
}

.swiper-button-next:hover, .swiper-button-prev:hover {
    background: var(--accent) !important;
}

.swiper-pagination-bullet {
    background: white !important;
    opacity: 0.5;
    width: 8px;
    height: 8px;
}

.swiper-pagination-bullet-active {
    background: var(--accent) !important;
    opacity: 1;
    width: 24px;
    border-radius: 4px;
}

/* ================= 通用内容区块 ================= */
.section {
    padding: 100px 0;
}

.section-bg {
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: bold;
    color: var(--brand);
    letter-spacing: 1px;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--accent);
    margin: 20px auto;
}

.section-desc {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 850px;
    margin: 0 auto;
    line-height: 1.7;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding-top: 40px;
}

.timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 6px;
    background: var(--border-color);
    transform: translateX(-50%);
    border-radius: 3px;
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
    position: relative;
}

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

.timeline-icon {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 56px;
    height: 56px;
    background: #fff;
    border: 4px solid var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: 0.3s;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.timeline-item:hover .timeline-icon {
    border-color: var(--brand);
    transform: translateX(-50%) scale(1.1);
}

.timeline-content {
    width: 45%;
    padding: 0 30px;
}

.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
}

.timeline-content h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-main);
}

.timeline-content p {
    color: var(--text-muted);
    line-height: 1.7;
}

.timeline-img {
    width: 45%;
    padding: 0 30px;
    display: flex;
}

.timeline-item:nth-child(odd) .timeline-img {
    justify-content: flex-start;
}

.timeline-item:nth-child(even) .timeline-img {
    justify-content: flex-end;
}

.timeline-img img {
    width: 100%;
    max-width: 450px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: 0.5s;
}

.feature-cluster {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}

.cluster-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 50px;
    z-index: 2;
}

.cluster-center {
    flex: 1.2;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cluster-center img {
    width: 100%;
    max-width: 480px;
    height: auto;
    display: block;
    margin: 0 auto;
    animation: floatUpDown 6s ease-in-out infinite;
}

@keyframes floatUpDown {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0);
    }
}

.cluster-card {
    background: #fff;
    padding: 24px;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    cursor: default;
}

.cluster-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(30, 58, 138, 0.2);
}

.cluster-card h4 {
    font-size: 18px;
    color: var(--text-main);
    font-weight: bold;
    margin-bottom: 10px;
}

.cluster-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

@media (min-width: 992px) {
    .left-col .cluster-card::after {
        content: '';
        position: absolute;
        right: -40px;
        top: 50%;
        width: 40px;
        height: 1px;
        background: dashed 1px #cbd5e1;
        z-index: -1;
    }

    .right-col .cluster-card::after {
        content: '';
        position: absolute;
        left: -40px;
        top: 50%;
        width: 40px;
        height: 1px;
        background: dashed 1px #cbd5e1;
        z-index: -1;
    }
}

.feature-grid-flex {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    margin-top: 40px;
}

.grid-item {
    flex: 0 0 calc(33.333% - 20px);
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
    cursor: default;
}

.grid-item:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 15px 35px rgba(230, 0, 18, 0.15);
}

.grid-item img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    margin: 0 auto 20px;
    display: block;
}

.grid-item h3 {
    font-size: 19px;
    font-weight: bold;
    color: var(--text-main);
    margin-bottom: 12px;
}

.grid-item p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ================= 支付宝页面专属区块 ================= */
.accordion-container {
    display: flex;
    gap: 20px;
    height: 420px;
    margin-top: 50px;
}

.accordion-item {
    flex: 1;
    background: #f8fafc;
    border-radius: 16px;
    padding: 30px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: flex 0.5s cubic-bezier(0.25, 0.8, 0.25, 1), background 0.5s ease;
    border: 1px solid var(--border-color);
}

.accordion-item.active {
    flex: 2.5;
    background: var(--purple-red);
    color: #fff;
    border-color: var(--purple-red);
    box-shadow: 0 20px 40px rgba(171, 100, 207, 0.3);
}

.acc-num {
    font-size: 50px;
    font-weight: 900;
    opacity: 0.1;
    position: absolute;
    top: 10px;
    right: 20px;
    transition: 0.5s;
    color: var(--brand);
}

.accordion-item.active .acc-num {
    color: #fff;
    opacity: 0.2;
}

.acc-header {
    position: relative;
    z-index: 2;
    transition: 0.3s;
}

.acc-header h3 {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--text-main);
    transition: 0.3s;
}

.accordion-item.active .acc-header h3 {
    color: #fff;
    font-size: 28px;
}

.acc-short {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
}

.accordion-item.active .acc-short {
    display: none;
}

.acc-body {
    display: none;
    margin-top: 30px;
    position: relative;
    z-index: 2;
    animation: fadeIn 0.5s ease forwards;
}

.accordion-item.active .acc-body {
    display: block;
}

.acc-solution {
    display: inline-block;
    background: #fff;
    color: var(--purple-red);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: bold;
    margin-bottom: 20px;
}

.acc-body h4 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #fff;
}

.acc-body p {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    max-width: 55%;
}

.acc-img {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 220px;
    height: 220px;
    object-fit: contain;
    opacity: 0;
    transform: scale(0.8);
    transition: 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    pointer-events: none;
}

.accordion-item.active .acc-img {
    opacity: 1;
    bottom: 20px;
    right: 20px;
    transform: scale(1);
}

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

.ui-showcase-section {
    background: var(--purple-red);
    padding: 100px 0;
    color: #fff;
    overflow: hidden;
}

.ui-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.phone-mockup-container {
    flex: 0 0 350px;
    display: flex;
    justify-content: center;
    position: relative;
    perspective: 1000px;
}

.phone-frame {
    width: 320px;
    height: 660px;
    background: #fff;
    border-radius: 40px;
    border: 12px solid #fff;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    overflow: hidden;
    position: relative;
    transition: transform 0.5s ease;
}

.phone-screen {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease;
}

.ui-content {
    flex: 1;
}

.ui-content h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
}

.ui-content .ui-line {
    width: 60px;
    height: 4px;
    background: #fff;
    margin-bottom: 24px;
    border-radius: 2px;
}

.ui-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 50px;
    max-width: 600px;
}

.ui-tabs {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 20px;
}

.ui-tab-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 16px 20px;
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.3s ease;
}

.ui-tab-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.ui-tab-btn.active {
    background: #fff;
    color: var(--purple-red);
    font-weight: bold;
    border-color: #fff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    transform: translateY(-3px);
}

.ui-tab-btn i {
    font-size: 20px;
}

/* ================= 联系我们专属样式 ================= */
.contact-wrapper {
    display: flex;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid var(--border-color);
    max-width: 1000px;
    margin: 0 auto;
}

.contact-left {
    flex: 1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    border-right: 1px solid var(--border-color);
}

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

.contact-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.contact-text h4 {
    font-size: 18px;
    color: var(--text-main);
    font-weight: bold;
    margin-bottom: 8px;
}

.contact-text p {
    font-size: 16px;
    color: var(--text-muted);
}

.contact-right {
    width: 400px;
    background: var(--bg-light);
    padding: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qr-card {
    text-align: center;
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.qr-card img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    margin-bottom: 16px;
}

.qr-card p {
    font-size: 14px;
    color: var(--text-main);
    font-weight: 500;
}

/* ================= 页脚 ================= */
.footer {
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 24px;
    color: var(--text-main);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 15px;
}

.footer-col ul li a:hover {
    color: var(--brand);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 12px;
}

.qr-box {
    background: #fff;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: inline-block;
}

.qr-box img {
    width: 100px;
    height: 100px;
}

.footer-divider {
    height: 1px;
    background: var(--border-color);
    margin-bottom: 30px;
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    margin-bottom: 30px;
    font-size: 14px;
}

.friend-links span {
    font-weight: bold;
    color: var(--text-main);
}

.friend-links a {
    color: #6b7280;
}

.friend-links a:hover {
    color: var(--brand);
}

.copyright {
    text-align: center;
    color: #9ca3af;
    font-size: 13px;
}

/* ================= 响应式适配 (手机端 H5) ================= */
@media (max-width: 992px) {
    /* 【核心修改4】：手机端同时隐藏中间文字链接和右侧按钮，防止挤破导航栏 */
    .nav-links, .nav-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        padding: 10px;
    }

    .hero-slider, .hero-banner {
        height: 450px !important;
    }

    .slide-title {
        font-size: 40px;
    }

    .accordion-container {
        flex-direction: column;
        height: 600px;
    }

    .accordion-item {
        flex: 1;
        padding: 20px;
    }

    .accordion-item.active {
        flex: 3;
    }

    .acc-img {
        width: 150px;
        height: 150px;
    }

    .accordion-item.active .acc-img {
        bottom: 10px;
        right: 10px;
    }

    .ui-wrapper {
        flex-direction: column;
        text-align: center;
    }

    .ui-content .ui-line {
        margin: 0 auto 24px;
    }

    .ui-content p {
        margin: 0 auto 30px;
    }

    .ui-tabs {
        justify-content: center;
    }

    .timeline-line {
        left: 24px;
        transform: none;
    }

    .timeline-item, .timeline-item:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 60px;
        margin-bottom: 60px;
    }

    .timeline-icon {
        left: 24px;
        transform: translateX(-50%);
        width: 40px;
        height: 40px;
    }

    .timeline-content, .timeline-item:nth-child(odd) .timeline-content {
        width: 100%;
        text-align: left;
        padding: 0;
        margin-bottom: 20px;
    }

    .timeline-img, .timeline-item:nth-child(odd) .timeline-img, .timeline-item:nth-child(even) .timeline-img {
        width: 100%;
        padding: 0;
        justify-content: flex-start;
    }

    .feature-cluster {
        flex-direction: column;
        gap: 30px;
    }

    .cluster-col {
        width: 100%;
        padding: 0;
        gap: 20px;
    }

    .cluster-center {
        order: -1;
        width: 100%;
        margin-bottom: 20px;
        flex: 1;
    }

    .cluster-center img {
        max-width: 100%;
        padding: 0 20px;
    }

    .feature-grid-flex {
        gap: 15px;
    }

    .grid-item {
        flex: 0 0 calc(50% - 8px);
        padding: 20px;
    }

    .contact-wrapper {
        flex-direction: column;
    }

    .contact-left {
        padding: 40px 30px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .contact-right {
        width: 100%;
        padding: 40px 30px;
    }

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

@media (max-width: 576px) {
    .hero-banner-content h1 {
        font-size: 32px;
    }

    .hero-banner-content p {
        font-size: 16px;
    }

    .feature-grid-flex {
        flex-direction: column;
        gap: 15px;
    }

    .grid-item {
        flex: 0 0 100%;
        width: 100%;
    }

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