@font-face {
    font-family: 'HarmonyOS';
    src: url('font/HarmonyOS_Sans_SC/HarmonyOS_Sans_SC_Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'HarmonyOS';
    src: url('font/HarmonyOS_Sans_SC/HarmonyOS_Sans_SC_Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: normal;
}

@font-face {
    font-family: 'HarmonyOS';
    src: url('font/HarmonyOS_Sans_SC/HarmonyOS_Sans_SC_Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
}

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

body {
    font-family: 'HarmonyOS', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

.container {
    max-width: 65.99vw;
    margin: 0 auto;
}

/* Header Styles */
.header {
    background: transparent;
    /* background: rgba(255, 255, 255, 0.95); */
    /* backdrop-filter: blur(10px); */
    padding: 0.781vw 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    /* border-bottom: 1px solid rgba(255, 255, 255, 0.1); */
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.625vw;
}

.logo-icon {
    height: 4.01vw;
    width: 25.469vw;
}

.nav {
    display: flex;
    gap: 4.583vw;
}

.nav-link {
    text-decoration: none;
    color: #FFFFFF;
    font-size: 1.042vw;
    font-weight: 100;
    padding: 0.417vw 0;
    border-bottom: 0.208vw solid transparent;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    border-bottom-color: #FFFFFF;
}

/* Hero Section */
.hero {
    background: url('./img/banner_bg.webp') no-repeat center;
    background-size: cover;
    width: auto;
    height: 55.625vw;
    display: flex;
    align-items: flex-start;
    text-align: left;
    padding-top: 8vw;
    position: relative;
    overflow: hidden;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 65.104vw;
    padding-left: 0;
    margin: 0 auto;
}

.hero-title {
    font-size: 4.167vw;
    font-weight: bold;
    color: #FFFFFF;
    margin-bottom: 1.042vw;
    letter-spacing: 1.5vw;
}

.hero-subtitle {
    font-size: 1.667vw;
    color: #FFFFFF;
    font-weight: 100;
    margin-bottom: 2.083vw;
    letter-spacing: 0.73vw;
}

.cta-button {
    width: 14.115vw;
    height: 3.177vw;
    background: linear-gradient(to right, #FEF0E3, #EECDA4);
    color: #683B33;
    border: none;
    padding: 0.833vw 1.667vw;
    border-radius: 2.344vw;
    font-size: 1.25vw;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 4.167vw;
    box-shadow: 0 0.208vw 0.781vw rgba(255, 107, 53, 0.3);
    letter-spacing: 0.052vw;
    display: inline-block;
}

.cta-button:hover {
    transform: translateY(-0.104vw);
    box-shadow: 0 0.417vw 1.302vw rgba(255, 107, 53, 0.4);
}

/* Hero Content Wrapper */
.hero-content-wrapper {
    display: flex;
    gap: 1.563vw;
    margin-top: 3.125vw;
    align-items: stretch;
    width: calc(100% + 10vw);
    margin-left: -5vw;
    margin-right: -5vw;
}

/* Feature Cards */
.features {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 0;
    background: linear-gradient(to bottom, #F6E0C7 0%, #C4AA87 100%);
    padding: 1.719vw 2.344vw 0.625vw 2.344vw;
    box-shadow: 0 0.3vw 1.5vw rgba(0, 0, 0, 0.2);
    flex: 1;
    width: 50.99vw;
    height: 15.417vw;
    gap: 3.229vw;
}

.feature-card {
    border-radius: 0;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: transparent;
    box-shadow: none;
    transition: all 0.3s ease;
    overflow: visible;
    position: relative;
    border-right: none;
}

.feature-card:last-child {
    border-right: none;
}

.feature-card:hover {
    transform: none;
    box-shadow: none;
}

.feature-efficient {
    background: transparent;
}

.feature-efficient .feature-badge {
    background: transparent;
}

.feature-allinone {
    background: transparent;
}

.feature-allinone .feature-badge {
    background: transparent;
}

.feature-specialized {
    background: transparent;
}

.feature-specialized .feature-badge {
    background: transparent;
}

.feature-badge {
    width: auto;
    height: auto;
    background: transparent;
    border-radius: 0;
    padding: 0;
    position: relative;
    top: 0;
    left: 0;
    box-shadow: none;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 0.833vw;
}

.feature-label {
    display: block;
    font-size: 1.667vw;
    font-weight: bold;
    color: #683B33;
    margin-bottom: 0.885vw;
    line-height: 1;
}

.feature-subtitle {
    font-size: 1.25vw;
    color: #683B33;
    font-weight: 600;
    letter-spacing: 0.1vw;
    position: relative;
    padding-top: 0.625vw;
}

.feature-subtitle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3.125vw;
    height: 0.208vw;
    background: linear-gradient(to right, #FBA25E 0%, #D3610B 100%);
}

.feature-text {
    position: relative;
    top: 0;
    left: 0;
    right: 0;
    font-size: 0.781vw;
    color: #685239;
    font-weight: 400;
    line-height: 1.85;
    padding: 0;
    text-align: center;
    margin-top: 0.833vw;
    max-width: 17.5vw;
}

.plus {
    display: none;
}

/* Building Icon */
.building-icon-wrapper {
    background: #252329;
    padding: 2vw 2.172vw 2vw 1.829vw;
    box-shadow: 0 0.5vw 2vw rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    position: relative;
    width: 20.636vw;
}

.building-icon {
    width: 14.304vw;
    height: 14.506vw;
    filter: drop-shadow(0 0.3vw 0.8vw rgba(0, 0, 0, 0.3));
    position: absolute;
    top: -5.5vw;
    right: -1vw;
}

.building-text {
    display: flex;
    flex-direction: column;
    gap: 0.8vw;
    max-width: 16.635vw;
    margin-top: 3.125vw;
}

.building-text h3 {
    color: #FFFFFF;
    font-size: 1.458vw;
    font-weight: bold;
    line-height: 1.3;
    text-shadow: none;
    letter-spacing: 0.05vw;
    margin: 0;
}

.building-text p {
    color: #FFFFFF;
    font-size: 0.729vw;
    font-weight: 400;
    line-height: 1.7;
    text-shadow: none;
    margin: 0;
}

/* About Section */
.about {
    padding: 2.604vw 0 6.771vw 0;
    background: #151517;
    position: relative;
}

/* About Section - redesigned layout */
.about-container .section-title,
.about-container .section-subtitle {
    text-align: left;
}

.about-header {
    margin-bottom: 1.823vw;
}

.about-wrap {
    position: relative;
    padding-left: 16.563vw;
    /* 留出左侧卡片空间 */
}

.about-right-panel {
    background: #25242B;
    background-size: cover;
    padding: 2.604vw;
    padding-left: 5.521vw;
    box-shadow: 0 0.781vw 2.083vw rgba(0, 0, 0, 0.3);
    width: 49.427vw;
    height: 25.691vw;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    column-gap: 6vw;
    row-gap: 3vw;
}

.about-item {
    display: grid;
    grid-template-columns: 5.5vw 1fr;
    align-items: center;
    column-gap: 1.042vw;
    color: #FFFFFF;
}

.about-icon {
    width: 5.5vw;
    height: 5.5vw;
    object-fit: contain;
}

/* 统一图标尺寸，确保四个条目在同一基线对齐 */

.item-title {
    font-size: 1.25vw;
    font-weight: bold;
    color: #E8C089;
    margin-bottom: 0.521vw;
}

.item-desc {
    font-size: 0.833vw;
    line-height: 1.8;
    color: #D9D9D9;
    max-width: 24vw;
}

/* 左侧卡片（向上偏移） */
.about-left-card {
    position: absolute;
    top: -2.045vw;
    left: 0;
    width: 19.948vw;
    height: 25.313vw;
    overflow: hidden;
    box-shadow: 0 0.781vw 2.083vw rgba(0, 0, 0, 0.35);
    background: url('./img/about-bg.webp') no-repeat center/cover;
}

.left-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    padding: 1.563vw 1.302vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #FFFFFF;
    text-align: center;
}

.left-card-title {
    font-size: 1.667vw;
    font-weight: bold;
    color: #FF9538;
    margin-bottom: 1.75vw;
}

.left-card-sub {
    font-size: 1.25vw;
}

.left-card-desc {
    margin-top: 1.75vw;
}

.left-card-desc p {
    font-size: 0.833vw;
    line-height: 2;
}

.left-card-btn {
    display: inline-block;
    margin-top: 1.563vw;
    width: 10.875vw;
    height: 2.448vw;
    line-height: 2.344vw;
    text-align: center;
    border-radius: 2.344vw;
    background: linear-gradient(90deg, #FEF0E3, #EECDA4);
    color: #683B33;
    font-weight: 500;
    text-decoration: none;
    font-size: 1.25vw;
}

.section-title {
    text-align: center;
    font-size: 2.083vw;
    color: #FFFFFF;
    margin-bottom: 0.781vw;
    font-weight: bold;
    letter-spacing: 0.583vw;
}

.section-subtitle {
    text-align: center;
    font-size: 1.042vw;
    color: #FFFFFF;
    letter-spacing: 0.156vw;
    margin-bottom: 4.167vw;
    text-transform: uppercase;
    letter-spacing: 0.415vw;
}

.about-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(23.438vw, 1fr));
    gap: 2.083vw;
    margin-top: 2.604vw;
}

.about-card {
    background: linear-gradient(to bottom, #FFF4E8 0%, #FFEACA 100%);
    border-radius: 0.781vw;
    padding: 2.083vw 1.563vw;
    text-align: center;
    box-shadow: 0 0.208vw 1.042vw rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.about-card:hover {
    transform: translateY(-0.260vw);
    box-shadow: 0 0.781vw 2.083vw rgba(0, 0, 0, 0.15);
}

.about-card h3 {
    font-size: 1.25vw;
    color: #683B33;
    margin-bottom: 1.302vw;
    font-weight: bold;
}

.about-card p {
    color: #777777;
    line-height: 1.8;
    font-size: 1.042vw;
}

.about-logo {
    position: absolute;
    top: 7.5vw;
    right: -15vw;
    transform: translate(-50%, -50%);
    width: 35.729vw;
    height: 35.729vw;
    opacity: 1;
    z-index: 2;
    pointer-events: none;
}

/* Products Section */
.container-product {
    padding: 0 3.49vw 0 3.177vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.products {
    height: 38.021vw;
    padding: 5.208vw 0;
    background: url('./img/scenario_bg.webp') no-repeat center;
    background-size: cover;
    color: white;
    position: relative;
}

.products .container {
    position: relative;
    z-index: 2;
}

.products-title {
    text-align: center;
    font-size: 2.083vw;
    margin-bottom: 2.5vw;
    font-weight: bold;
}

.products-subtitle {
    text-align: center;
    font-size: 1.042vw;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.7vw;
    margin-top: -2.083vw;
    margin-bottom: 3.125vw;
    text-transform: uppercase;
}

/* Scenarios Cards */
.scenario-cards {
    display: flex;
    justify-content: center;
    gap: 2.083vw;
    max-width: 66.406vw;
}

.scenario-card {
    width: 21.042vw;
    height: 15.26vw;
    border-radius: 0.781vw;
    background: linear-gradient(to bottom, #FFF4E8 0%, #FFEACA 100%);
    box-shadow: 0 0.208vw 1.042vw rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    color: #683B33;
}

.scenario-card:nth-child(1) .scenario-icon {
    width: 7.448vw;
    height: 5.99vw;
}

.scenario-card:nth-child(2) .scenario-icon {
    width: 7.5vw;
    height: 5.99vw;
}

.scenario-card:nth-child(3) .scenario-icon {
    width: 6.406vw;
    height: 6.458vw;
}

.scenario-title {
    font-size: 1.25vw;
    font-weight: bold;
    margin-bottom: 0.625vw;
    color: #683B33;
    margin-top: 1.875vw;
}

.scenario-desc {
    font-size: 0.833vw;
    color: #777777;
}

.product-content-wrapper {
    display: none;
}

.product-cards {
    display: none;
}

.tab-content {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tab-content.active {
    display: grid;
    opacity: 1;
}

.single-item-layout {
    justify-content: center;
    grid-template-columns: 1fr;
}

.single-item {
    width: 54.427vw;
    margin: 0 auto;
}

.product-card {
    width: 30.196vw;
    height: 14.896vw;
    border-radius: 1.042vw;
    padding: 1.563vw;
    display: flex;
    align-items: center;
    gap: 1.042vw;
    transition: all 0.3s ease;
}

#tab1 .product-card:nth-child(1) {
    background: url('./img/service-item_bg1.webp') no-repeat center;
    background-size: cover;
}

#tab1 .product-card:nth-child(2) {
    background: url('./img/service-item_bg2.webp') no-repeat center;
    background-size: cover;
}

#tab1 .product-card:nth-child(3) {
    background: url('./img/service-item_bg3.webp') no-repeat center;
    background-size: cover;
}

#tab2 .product-card {
    width: 54.427vw;
    background: url('./img/tech-item1.webp') no-repeat center;
    background-size: cover;
}

#tab3 .product-card:nth-child(1) {
    background: url('./img/scnario-item1.webp') no-repeat center;
    background-size: cover;
}

#tab3 .product-card:nth-child(2) {
    background: url('./img/scnario-item2.webp') no-repeat center;
    background-size: cover;
}

#tab3 .product-card:nth-child(3) {
    background: url('./img/service-item_bg3.webp') no-repeat center;
    background-size: cover;
}

#tab4 .product-card {
    width: 54.427vw;
    background: url('./img/brand-item1.webp') no-repeat center;
    background-size: cover;
}

.product-card:hover {
    transform: translateY(-0.417vw);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 0.781vw 2.083vw rgba(0, 0, 0, 0.2);
}

.product-content h3 {
    font-size: 1.875vw;
    color: #683B33;
    margin-bottom: 0.938vw;
    font-weight: bold;
    text-shadow: 0.052vw 0.052vw 0.104vw rgba(0, 0, 0, 0.1);
}

.product-content p {
    font-size: 1.042vw;
    color: #777777;
    line-height: 1.7;
    width: 15.281vw;
}

/* Mobile Features Section */
.mobile-features {
    padding: 5.208vw 0;
    background: url('./img/app_bg.webp') no-repeat center;
    background-size: cover;
    position: relative;
    overflow: hidden;
    height: 56.927vw;
}

.mobile-features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 107, 53, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 183, 77, 0.2) 0%, transparent 50%);
    z-index: 1;
}

.mobile-features .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5.208vw;
    align-items: center;
    position: relative;
    z-index: 2;
}

.features-content {
    display: flex;
    flex-direction: column;
    gap: 4.167vw;
}

.feature-item {
    height: 11.042vw;
    width: 36.094vw;
    background: rgba(252, 240, 233, 0.77);
    backdrop-filter: blur(0.781vw);
    border-radius: 1.042vw;
    padding: 2.083vw;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: 0 0.417vw 1.302vw rgba(0, 0, 0, 0.1);
    border: 0.052vw solid rgba(255, 255, 255, 0.5);
}

.feature-item:hover,
.feature-item.active {
    transform: translateX(0.781vw);
    box-shadow: 0 0.781vw 2.083vw rgba(0, 0, 0, 0.15);
    background: url('./img/app-item_bg2.webp') no-repeat center;
    background-size: cover;
    cursor: pointer;
}

.feature-item h3 {
    font-size: 1.875vw;
    color: #683B33;
    margin-bottom: 0.625vw;
    font-weight: bold;
}

.feature-item p {
    color: #777777;
    font-size: 1.042vw;
    line-height: 1.7;
    max-width: 16.667vw;
}

.arrow-btn {
    border: none;
    width: 3.958vw;
    height: 3.958vw;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.arrow-btn:hover {
    background: #FF5722;
    transform: scale(1.15);
    box-shadow: 0 0.313vw 1.042vw rgba(255, 107, 53, 0.4);
}

.arrow-btn img {
    width: 3.958vw;
    height: 3.958vw;
}

.mobile-mockup {
    position: relative;
    text-align: center;
}

.phone-image {
    max-width: 23.251vw;
    height: 44.115vw;
    filter: drop-shadow(0 1.042vw 2.083vw rgba(0, 0, 0, 0.2));
}

.mobile-features-logo {
    position: absolute;
    top: -7.5vw;
    right: -12.5vw;
    width: 35.729vw;
    height: 35.729vw;
    opacity: 1;
    z-index: -1;
    pointer-events: none;
}

/* Footer */
.footer {
    background: #151517;
    padding: 3.125vw 0 1.563vw;
    color: #FFFFFF;
}

.footer .container {
    position: relative;
    z-index: 2;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2.604vw;
}

.footer-left {
    max-width: 21.823vw;
}

.footer-logo {
    margin-bottom: 1.302vw;
    display: flex;
    align-items: center;
    gap: 0.521vw;
}

.footer-logo .logo-icon {
    height: 3.906vw;
    width: 26.302vw;
}

.footer-description {
    font-size: .7292vw;
    line-height: 1.8;
    color: #FFFFFF;
}

.footer-right {
    display: flex;
    gap: 4.167vw;
}

.footer-section h4 {
    font-size: .7292vw;
    font-weight: bold;
    margin-bottom: 1.302vw;
    color: #FFFFFF;
}

.footer-section a {
    display: block;
    color: #FFFFFF;
    text-decoration: none;
    margin-bottom: 0.625vw;
    font-size: 0.911vw;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #FF6B35;
}

.footer-section p {
    font-size: .7292vw;
    color: #FFFFFF;
    margin-bottom: 0.521vw;
}

.footer-bottom {
    border-top: 0.104vw solid rgba(255, 255, 255, 1);
    padding-top: 2.083vw;
    text-align: center;
    font-size: .8333vw;
    color: #FFFFFF;
}

.footer-bottom p {
    margin-bottom: 0.625vw;
}

.footer-links {
    margin-top: 1.042vw;
}

.footer-links a {
    color: #FFFFFF;
    text-decoration: none;
    margin: 0 0.781vw;
    transition: color 0.3s ease;
    font-size: .8333vw;
}

.footer-links a:hover {
    color: #FF6B35;
}

.footer-links span {
    color: #62352D;
}