.full-width {
    width: 100%;
    padding: 0 5%;
}

.section {
    width: 100%;
    padding: 20px 150px;
    position: relative;
    z-index: 2;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--deep-blue);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 3rem;
    font-weight: 300;
}

/* ========= 幻灯片 BANNER ========= */
.banner-carousel {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    background: #001b38;
    box-shadow: inset 0 -20px 30px -10px rgba(0,0,0,0.3);
}
.carousel-slides {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    height: 100%;
}
.slide {
    flex: 0 0 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    position: relative;
    background-size: cover;
    background-position: center;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    /* background: rgba(0,20,50,0.2); */
    /* backdrop-filter: brightness(1.2) blur(1px); */
}
.slide-content {
    position: relative;
    z-index: 5;
    max-width: 900px;
    padding: 30px 50px;
    background: rgba(0,30,60,0.3);
    backdrop-filter: blur(8px);
    border-radius: 60px;
    border: 1px solid rgba(255,255,255,0.2);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    transform: translateY(-10px);
    animation: float 5s infinite alternate;
}
@keyframes float {
    0% { transform: translateY(-5px); }
    100% { transform: translateY(5px); }
}
.slide-content h2 {
    font-size: 3.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0,160,255,0.6);
    letter-spacing: -0.02em;
}
.slide-content p {
    font-size: 1.4rem;
    opacity: 0.95;
    font-weight: 300;
}
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    backdrop-filter: blur(8px);
    transition: 0.2s;
}
.carousel-btn:hover {
    background: var(--primary-blue);
    border-color: white;
}
.prev { left: 40px; }
.next { right: 40px; }
.dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 16px;
    z-index: 10;
}
.dot {
    width: 14px;
    height: 14px;
    border-radius: 20px;
    background: rgba(255,255,255,0.5);
    border: none;
    cursor: pointer;
    transition: 0.3s;
}
.dot.active {
    background: white;
    width: 40px;
    box-shadow: 0 0 15px #00aaff;
}

/* ===== 公司介绍区域 ===== */
.about-company {
    display: flex;
    align-items: center;
    gap: 50px;
    background: var(--card-bg-light);
    backdrop-filter: blur(12px);
    border-radius: 48px;
    box-shadow: var(--shadow);
    padding: 50px;
    /* margin-top: -50px; */
    border: 1px solid rgba(255,255,255,0.7);
}
.left-text {
    flex: 1.2;
}
.left-text h2 {
    font-size: 3rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--deep-blue), #103a68);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}
.company-desc {
    font-size: 1.1rem;
    color: #1f3a5f;
    margin-bottom: 30px;
    line-height: 1.6;
}
.feature-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.feature-list li {
    font-size: 1.1rem;
    font-weight: 500;
    color: #0b2b4f;
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0,102,204,0.05);
    padding: 10px 20px;
    border-radius: 60px;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(0,102,204,0.15);
}
.feature-list i {
    color: var(--primary-blue);
    font-size: 1.6rem;
    width: 32px;
    text-align: center;
}

.right-img {
    flex: 1.2;
    display: flex;
    justify-content: center;
    align-items: center;
    /*background: radial-gradient(circle at 30% 30%, rgba(0,102,204,0.15), transparent 70%);*/
    background: url('https://apk.opencool.top/website/img/bar.png');
    height: 400px;
    background-size: cover;
    border-radius: 40px;
    padding: 30px;
}
.right-img .chip-icon {
    position: relative;
    font-size: 12rem;
    color: var(--primary-blue);
    filter: drop-shadow(0 15px 20px rgba(0,102,204,0.5));
}
.right-img .bolt-icon {
    position: absolute;
    font-size: 4rem;
    color: #ffd966;
    transform: rotate(15deg) translate(30px, 40px);
    filter: drop-shadow(0 0 10px #ffaa33);
}

/* ===== 智能充电解决方案 ===== */
.solution-header {
    text-align: center;
    margin-bottom: 30px;
}
.solution-header h3 {
    font-size: 2.8rem;
    font-weight: 700;
    background: linear-gradient(145deg, #004a99, #1a4f85);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.solution-header p {
    font-size: 1.2rem;
    color: #2d4e72;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
    margin-top: 40px;
}
.product-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: 36px;
    padding: 40px 20px 40px;
    box-shadow: 0 20px 30px -10px rgba(0,60,120,0.4);
    transition: 0.3s ease;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    background-size: cover;
    flex-direction: column;
    position: relative;
    overflow: hidden;

    color: white;

}

.product-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, rgba(0,102,204,0.1), rgba(255,255,255,0.1));
    pointer-events: none;
}


.product-card:hover {
    transform: translateY(-12px) scale(1.01);
    border-color: var(--primary-blue);
    box-shadow: 0 30px 40px -12px #0066cc;
    background: rgba(0, 40, 70, 0.8);
}
.card-icon {
    font-size: 3.2rem;
    color: #9fc9ff;
    margin-bottom: 20px;
    filter: drop-shadow(0 5px 10px #0066cc);
}
.product-card h4 {
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: white;
}
.product-card .sub {
    font-weight: 600;
    color: #b6d6ff;
    margin-bottom: 15px;
    font-size: 1rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.product-card p {
    color: #f0f7ff;
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.5;
}
.card-link {
    color: white;
    font-weight: 600;
    text-decoration: none;
    align-self: flex-start;
    border-bottom: 2px solid transparent;
    transition: 0.2s;
    margin-top: 10px;
}
.card-link:hover {
    border-bottom-color: var(--primary-blue);
    transform: translateX(5px);
}

/* 合并后的品牌与成果展示区 */
.combined-showcase {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(8px);
    border-radius: 60px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.7);
    margin: 40px 0 20px;
}

.milestone-row {
    display: flex;
    justify-content: space-around;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.milestone-item {
    background: white;
    border-radius: 40px;
    padding: 20px 15px;
    min-width: 140px;
    text-align: center;
    box-shadow: 0 10px 20px rgba(0,40,80,0.1);
    border: 1px solid rgba(0,102,204,0.2);
    transition: 0.2s;
    flex: 1 1 160px;
}

.milestone-item i {
    font-size: 2.2rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.milestone-item .num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--deep-blue);
    line-height: 1.2;
}

.milestone-item .label {
    font-size: 1rem;
    color: #1f4970;
}

.brands-title-compact {
    font-size: 2rem;
    font-weight: 600;
    color: var(--deep-blue);
    text-align: center;
    margin: 30px 0 30px;
}

.brands-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 35px 50px;
}

.brand-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100px;
    color: #1a3d62;
    transition: 0.2s;
}

.brand-item:hover {
    transform: scale(1.05);
    color: var(--primary-blue);
}

.brand-icon {
    background: white;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    color: var(--primary-blue);
    box-shadow: 0 10px 15px -5px rgba(0,102,204,0.3);
    border: 2px solid rgba(255,255,255,0.8);
    margin-bottom: 10px;
}

.brand-icon img{
    width: 80px;
}


.brand-item span {
    font-weight: 500;
    font-size: 0.95rem;
}

/* ========= 二维码区域 · 细化卡片 ========= */
.qr-section {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(8px);
    border-radius: 60px;
    padding: 45px 30px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255,255,255,0.7);
}
.qr-title {
    text-align: center;
    font-size: 2rem;
    color: var(--deep-blue);
    margin-bottom: 40px;
    font-weight: 600;
}

.qr-section .qr-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(260px, 1fr));
    gap: 25px;
    justify-content: center;
}

.qr-section .qr-item {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(6px);
    border-radius: 40px;
    padding: 28px 18px 24px;
    box-shadow: 0 20px 30px -12px rgba(0,60,120,0.25);
    transition: transform 0.2s ease, box-shadow 0.2s;
    border: 1px solid rgba(255,255,255,0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.qr-section .qr-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 28px 36px -12px var(--primary-blue);
    border-color: var(--primary-blue);
}

/* 修改为支持图片展示的qr-placeholder，同时保留原样式作为容器 */
.qr-section .qr-placeholder {
    width: 160px;
    height: 160px;
    margin: 0 auto 20px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    border: 4px solid white;
    box-shadow: 0 12px 18px -8px #0066cc50, inset 0 0 0 2px rgba(255,255,255,0.8);
    border: 1px solid rgba(0,102,204,0.2);
    /* box-shadow: 0 12px 0 #001d3d, 0 10px 20px rgba(0,0,0,0.2); */
    transition: 0.2s;
    line-height: 1.2;
    overflow: hidden;   /* 保证图片圆角 */
    position: relative;
}

/* 图片自适应占满容器 */
.qr-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 28px;  /* 稍小于父容器圆角 */
}

/* 如果图片加载失败或没有图片，使用原来的图标+文字样式 */
.qr-placeholder .fallback-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #0b2b4f, #1e4d82);
    border-radius: 32px;
}
.qr-placeholder i {
    font-size: 3.8rem;
    margin-bottom: 6px;
}
.qr-placeholder span {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 1px;
    background: rgba(255,255,255,0.2);
    padding: 4px 12px;
    border-radius: 40px;
    backdrop-filter: blur(2px);
}

.qr-section .qr-item h4 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--deep-blue);
}
.qr-section .qr-item p {
    font-size: 0.9rem;
    color: #1e3b5c;
    margin-bottom: 20px;
    line-height: 1.4;
    padding: 0 5px;
    flex: 1;
}

.qr-section .qr-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 5px;
    width: 100%;
}
.qr-section .qr-buttons .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: #edf5ff;
    border-radius: 40px;
    padding: 8px 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--deep-blue);
    text-decoration: none;
    border: 1px solid rgba(0,102,204,0.2);
    transition: all 0.15s;
    box-shadow: 0 4px 8px rgba(0,60,120,0.05);
    cursor: pointer;
    border: none;
    outline: none;
    white-space: nowrap;
}
.qr-section .qr-buttons .btn i {
    font-size: 1.1rem;
}
.qr-section .qr-buttons .btn.active {
    background: var(--primary-blue);
    color: white;
    border-color: white;
    box-shadow: 0 8px 12px -4px #0066cc;
}
.qr-section .qr-buttons .btn:hover {
    background: var(--primary-blue);
    color: white;
    transform: scale(1.02);
}