/* 合并的广告位与倒计时区域 */
.hero-banner {
    background: rgb(0, 36, 158) /*linear-gradient(rgba(0, 51, 102, 0.85), rgba(0, 153, 204, 0.8)), */ url('../images/wlsc_bg.png') no-repeat;
    background-size: 1920px 750px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 60px;
    color: var(--white);
    text-align: center;
    padding: 4rem 2rem;
    min-height: 500px;
}

.hero-banner h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-banner .subtitle {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.hero-banner .theme {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
}

.hero-info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-info-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.inner-container {
    display: flex;
    align-items: center;
}

.inner-container .hero-info {
    display: block;
    gap: 0.25rem;
    text-align: left;
}

.inner-container .hero-info:first-child {
    display: flex;
    align-items: end;
    gap: 0.8rem;
    flex-direction: column;
}

.inner-container .hero-info h1 {
    font-size: 5rem;
    line-height: 1;
}

.inner-container .hero-info .subtitle {
    font-size: 2.5rem;
    line-height: 1;
    gap: 0.5rem;
}

.inner-container .hero-info .theme {
    font-size: 1.5rem;
    font-weight: normal;
    margin: 0;
}

.inner-container .hero-info .hero-info-item.big {
    font-size: 13rem;
    font-weight: 800;
    line-height: 1;
    margin: -2rem 0 0;
}

.inner-container .hero-info .hero-info-item {
    font-size: 1.5rem;
    line-height: 1;
    margin: 0;
    vertical-align: middle;
}

.inner-container .hero-info .dot {
    display: inline-block;
    width: 0.4rem;
    height: 0.4rem;
    line-height: 1;
    background-color: var(--white);
    border-radius: 50%;
    vertical-align: middle;
    margin: 0 0.5rem;
}

.inner-container .line {
    width: 0.5rem;
    height: 16rem;
    background-color: var(--white);
    margin: 0 1rem;
}

.inner-container .hero-info .hero-info-item:nth-child(2) {
    font-size: 2rem;
    line-height: 1;
    margin: 0;
}

.inner-sm-container {
    display: none;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 2rem 0;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem;
    border-radius: 8px;
    min-width: 80px;
    backdrop-filter: blur(5px);
}

.countdown-number {
    font-size: 2rem;
    font-weight: 700;
}

.countdown-label {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

@media (max-width: 1560px) {
    .hero-banner {
        background-image: url('../images/wlsc_bg1.png');
    }

    .inner-sm-container {
        display: block;
    }

    .inner-container {
        display: none;
    }
}

@media (max-width: 992px) {
    .hero-banner {
        background-image: url('images/wlsc_bg2.jpg');
    }

    .hero-banner h1 {
        font-size: 2.8rem;
    }

    .hero-banner .subtitle {
        font-size: 1.5rem;
    }

    .hero-banner .theme {
        font-size: 1.8rem;
    }
}

/* 手机端广告位优化 */
@media (max-width: 768px) {
    .hero-info {
        flex-direction: column;
        gap: 1.5rem;
    }

    .hero-info-item i {
        display: none; /* 移除图标 */
    }

    .countdown {
        gap: 0.8rem;
        flex-wrap: nowrap; /* 防止换行 */
        overflow-x: auto; /* 允许水平滚动 */
        padding-bottom: 0.5rem;
        /*justify-content: flex-start;*/
        width: 100%;
    }

    .countdown-item {
        min-width: 70px;
        padding: 0.8rem;
        flex-shrink: 0; /* 防止缩小 */
    }

    .countdown-number {
        font-size: 1.5rem;
    }

    .countdown-label {
        font-size: 0.8rem;
    }
}

@media (max-width: 576px) {
    .hero-banner {
        padding: 2rem 1rem;
        min-height: 450px;
    }

    .hero-banner h1 {
        font-size: 2.2rem;
    }

    .hero-banner .subtitle {
        font-size: 1.3rem;
    }

    .hero-banner .theme {
        font-size: 1.5rem;
    }

    .countdown {
        gap: 0.5rem;
    }

    .countdown-item {
        min-width: 60px;
        padding: 0.6rem;
    }

    .countdown-number {
        font-size: 1.3rem;
    }

    .host-organizer {
        padding: 20px;
    }
}