/* ===== business_detail.css - 创新业务详情页样式 ===== */

/* ===== Banner ===== */
.bd-banner {
    position: relative;
    width: 100%;
    height: 800px;
    margin-top: 86px;
    overflow: hidden;
}

.bd-banner .banner-bg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.bd-banner .banner-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.bd-banner .banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 60%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0.15) 60%, transparent 100%);
    pointer-events: none;
}

.bd-banner .banner-accent {
    position: absolute;
    bottom: 30px;
    right: 200px;
    width: 427px;
    height: 110px;
    object-fit: contain;
    pointer-events: none;
}

.bd-banner .banner-content {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    padding-left: 302px;
    max-width: 950px;
    z-index: 2;
}

.bd-banner .banner-title {
    font-size: 58px;
    font-weight: bold;
    color: #fff;
    line-height: 1;
    letter-spacing: 0.23px;
    margin-bottom: 28px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.bd-banner .banner-desc {
    font-size: 22px;
    color: #fff;
    line-height: 33px;
    letter-spacing: -0.02px;
}

/* ===== Content Title Section ===== */
.bd-title-section {
    text-align: center;
    padding: 80px 20px 40px;
    background: #fff;
}

.bd-title-section .bd-main-title {
    font-size: 49px;
    font-weight: bold;
    color: var(--color-text);
    letter-spacing: 0.19px;
}

.bd-title-section .bd-main-desc {
    font-size: 16px;
    color: var(--color-text);
    line-height: 28px;
    max-width: 1043px;
    margin: 0 auto;
}

/* ===== Content Image Section ===== */
.bd-image-section {
    padding: 0 168px 80px;
    background: #fff;
}

.bd-image-section .bd-content-img {
    width: 100%;
    max-width: 1581px;
    margin: 0 auto;
    display: block;
    border-radius: 12px;
    overflow: hidden;
}

.bd-image-section .bd-content-img img {
    width: 100%;
    height: 545px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.bd-image-section .bd-content-img:hover img {
    transform: scale(1.02);
}

/* ===== Detail Content Section ===== */
.bd-detail-section {
    padding: 80px 20px;
    background: #fff;
}

.bd-detail-section .container {
    max-width: 1310px;
}

.bd-detail-title {
    font-size: 30px;
    font-weight: bold;
    color: var(--color-text);
    letter-spacing: 0.12px;
    text-align: center;
    margin-bottom: 40px;
}

.bd-detail-text {
    font-size: 16px;
    color: var(--color-text);
    line-height: 28px;
    text-align: center;
    margin-bottom: 30px;
}

/* ===== Stats Section ===== */
.bd-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.bd-stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 220px;
}

.bd-stat-number {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-bottom: 8px;
}

.bd-stat-number .big {
    font-size: 48px;
    font-weight: bold;
    color: var(--color-primary);
    line-height: 1;
}

.bd-stat-number .unit {
    font-size: 22px;
    font-weight: bold;
    color: var(--color-primary);
}

.bd-stat-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 16px;
    color: var(--color-primary);
    font-weight: 500;
}

.bd-stat-label img {
    width: 22px;
    height: 22px;
}

/* Stat item for the 70%+30% */
.bd-stat-item--dual .bd-stat-number .big {
    font-size: 42px;
}

.bd-stat-item--dual .bd-stat-label {
    gap: 10px;
}

.bd-stat-label-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== Divider ===== */
.bd-divider {
    width: 100%;
    max-width: 1320px;
    height: 1px;
    background: #e0e0e0;
    margin: 40px auto;
}

/* ===== Return Button ===== */
.bd-return {
    text-align: right;
    padding: 30px 0;
    max-width: 1320px;
    margin: 0 auto;
}

.bd-return-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 10px 10px 24px;
    border-radius: 22px;
    font-size: 16px;
    color: #fff;
    background: var(--color-primary);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    letter-spacing: 0.25px;
}

.bd-return-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(91, 178, 23, 0.3);
}

.bd-return-btn .btn-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #fff;
}

.bd-return-btn .btn-circle img {
    width: 18px;
    height: auto;
}

/* ===== Scroll Animations ===== */
.bd-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.bd-animate.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.bd-animate--delay-1 { transition-delay: 0.1s; }
.bd-animate--delay-2 { transition-delay: 0.2s; }
.bd-animate--delay-3 { transition-delay: 0.3s; }

/* ===== Responsive - Large Desktop ===== */
@media (max-width: 1600px) {
    .bd-banner .banner-content {
        padding-left: 200px;
    }
    .bd-image-section {
        padding: 0 100px 80px;
    }
}

/* ===== Responsive - Desktop ===== */
@media (max-width: 1400px) {
    .bd-banner .banner-content {
        padding-left: 120px;
    }
    .bd-banner .banner-accent {
        right: 100px;
        width: 350px;
    }
    .bd-image-section {
        padding: 0 60px 60px;
    }
    .bd-stats {
        gap: 40px;
    }
}

/* ===== Responsive - Tablet Landscape ===== */
@media (max-width: 1200px) {
    .bd-banner {
        height: 600px;
    }
    .bd-banner .banner-content {
        padding-left: 80px;
    }
    .bd-banner .banner-title {
        font-size: 48px;
    }
    .bd-banner .banner-desc {
        font-size: 18px;
        line-height: 28px;
    }
    .bd-banner .banner-accent {
        display: none;
    }
    .bd-title-section .bd-main-title {
        font-size: 40px;
    }
    .bd-image-section {
        padding: 0 40px 50px;
    }
    .bd-image-section .bd-content-img img {
        height: 420px;
    }
    .bd-detail-title {
        font-size: 26px;
    }
    .bd-stat-number .big {
        font-size: 40px;
    }
    .bd-stat-number .unit {
        font-size: 18px;
    }
}

/* ===== Responsive - Tablet Portrait ===== */
@media (max-width: 992px) {
    .bd-banner {
        height: 500px;
    }
    .bd-banner .banner-content {
        padding-left: 30px;
        padding-right: 30px;
        max-width: 100%;
    }
    .bd-banner .banner-title {
        font-size: 40px;
    }
    .bd-banner .banner-desc {
        font-size: 16px;
        line-height: 26px;
    }
    .bd-title-section {
        padding: 60px 20px 30px;
    }
    .bd-title-section .bd-main-title {
        font-size: 34px;
    }
    .bd-image-section {
        padding: 0 30px 40px;
    }
    .bd-image-section .bd-content-img img {
        height: 360px;
    }
    .bd-detail-section {
        padding: 50px 20px;
    }
    .bd-stats {
        gap: 30px;
    }
    .bd-stat-item {
        min-width: 180px;
    }
    .bd-stat-number .big {
        font-size: 36px;
    }
    .bd-return {
        padding: 20px 30px;
    }
}

/* ===== Responsive - Mobile ===== */
@media (max-width: 768px) {
    .bd-banner {
        height: 400px;
        margin-top: 60px;
    }
    .bd-banner .banner-content {
        padding-left: 20px;
        padding-right: 20px;
    }
    .bd-banner .banner-title {
        font-size: 32px;
        margin-bottom: 16px;
    }
    .bd-banner .banner-desc {
        font-size: 14px;
        line-height: 24px;
    }
    .bd-title-section {
        padding: 40px 15px 20px;
    }
    .bd-title-section .bd-main-title {
        font-size: 28px;
    }
    .bd-title-section .bd-main-desc {
        font-size: 14px;
        line-height: 24px;
    }
    .bd-image-section {
        padding: 0 15px 30px;
    }
    .bd-image-section .bd-content-img img {
        height: 260px;
    }
    .bd-detail-section {
        padding: 30px 15px;
    }
    .bd-detail-title {
        font-size: 22px;
        margin-bottom: 24px;
    }
    .bd-detail-text {
        font-size: 14px;
        line-height: 24px;
        text-align: left;
    }
    .bd-stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }
    .bd-stat-item {
        min-width: auto;
        align-items: center;
    }
    .bd-stat-number .big {
        font-size: 32px;
    }
    .bd-stat-number .unit {
        font-size: 16px;
    }
    .bd-divider {
        margin: 20px auto;
    }
    .bd-return {
        padding: 15px 15px;
        text-align: center;
    }
    .bd-return-btn {
        font-size: 14px;
        padding: 8px 8px 8px 20px;
    }
    .bd-return-btn .btn-circle {
        width: 30px;
        height: 30px;
    }
}

@media (max-width: 480px) {
    .bd-banner {
        height: 320px;
    }
    .bd-banner .banner-title {
        font-size: 28px;
    }
    .bd-banner .banner-desc {
        font-size: 13px;
    }
    .bd-title-section .bd-main-title {
        font-size: 24px;
    }
    .bd-image-section .bd-content-img img {
        height: 200px;
    }
    .bd-stat-number .big {
        font-size: 28px;
    }
}