/**
 * 数据治理实战指南购买页
 * 与 dg-guide.html 共用官网公共头尾及基础样式。
 */

.lsd-book-purchase {
    background: #F7FAFF;
}

.lsd-book-purchase-hero {
	position: relative;
    overflow: hidden;
    padding: 64px 0;
    color: #172B4D;
    background:
        linear-gradient(118deg, rgba(20, 105, 232, .12) 0%, rgba(255, 255, 255, .94) 37%, rgba(239, 247, 255, .95) 100%),
        #F4F8FF;
    border-bottom: 1px solid #E5EDF9;
}

.lsd-book-purchase-hero::before,
.lsd-book-purchase-hero::after {
    position: absolute;
    border: 1px solid rgba(29, 112, 235, .16);
    content: '';
    pointer-events: none;
}

.lsd-book-purchase-hero::before {
    top: -120px;
    left: -90px;
    width: 440px;
    height: 440px;
    transform: rotate(18deg);
    background: linear-gradient(135deg, rgba(18, 87, 208, .14), transparent 66%);
}

.lsd-book-purchase-hero::after {
    right: -110px;
    bottom: -220px;
    width: 560px;
    height: 420px;
    transform: rotate(-12deg);
    background: linear-gradient(135deg, rgba(245, 27, 145, .10), rgba(39, 114, 240, .06));
}

.lsd-book-purchase-hero-inner {
	position: relative;
	z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 92px;
    min-height: 440px;
}

.lsd-book-purchase-cover-wrap {
    position: relative;
    width: 260px;
    flex: 0 0 260px;
}

.lsd-book-purchase-cover {
    display: block;
    width: 100%;
}

.lsd-book-purchase-intro {
    max-width: 565px;
}

.lsd-book-purchase-eyebrow {
    display: inline-flex;
    align-items: center;
    height: 30px;
    padding: 0 13px;
    margin-bottom: 22px;
    border: 1px solid #C8D8EE;
    border-radius: 15px;
    background: #FFFFFF;
    color: #3062A4;
    font-size: 14px;
    letter-spacing: 1px;
}

.lsd-book-purchase-title {
    margin: 0;
    font-size: 36px;
    font-weight: 600;
    line-height: 1.35;
}

.lsd-book-purchase-subtitle {
    margin: 16px 0 0;
    color: #0B58B9;
    font-size: 20px;
    font-weight: 500;
    line-height: 1.6;
}

.lsd-book-purchase-features {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 13px;
    padding: 0;
    margin: 25px 0 22px;
    list-style: none;
}

.lsd-book-purchase-features li {
    position: relative;
    padding-left: 17px;
    color: #40546F;
    font-size: 15px;
}

.lsd-book-purchase-features li::before {
    position: absolute;
    top: 8px;
    left: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #2ED8FF;
    content: '';
}

.lsd-book-purchase-authors {
    margin: 0;
    color: #71839A;
    font-size: 15px;
}

.lsd-book-status-section,
.lsd-book-notice-section {
    padding: 64px 0;
}

.lsd-book-platform-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: center;
    gap: 24px;
    max-width: 850px;
    margin: 34px auto 0;
}

.lsd-book-platform-card {
    padding: 28px;
    border: 1px solid #E1E9F5;
    border-radius: 16px;
    background: #FFFFFF;
    box-shadow: 0 12px 34px rgba(31, 71, 140, .07);
    text-align: center;
}

.lsd-book-platform-heading {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
}

.lsd-book-platform-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 92px;
    height: 52px;
    flex: 0 0 92px;
    padding: 7px 10px;
    border: 1px solid #E9EDF3;
    border-radius: 12px;
    background: #FFFFFF;
    box-sizing: border-box;
}

.lsd-book-platform-logo {
    display: block;
    max-width: 100%;
    max-height: 38px;
    object-fit: contain;
}

.lsd-book-platform-logo-tmall {
    width: 72px;
}

.lsd-book-platform-logo-jd {
    width: 54px;
    height: 54px;
}

.lsd-book-platform-heading h3 {
    margin: 0;
    color: #172B4D;
    font-size: 21px;
    font-weight: 600;
}

.lsd-book-platform-heading p {
    margin: 5px 0 0;
    color: #8593A6;
    font-size: 13px;
}

.lsd-book-qr-link {
    display: block;
    width: 202px;
    padding: 10px;
    margin: 25px auto 0;
    border: 1px solid #E6ECF4;
    border-radius: 12px;
    background: #FFFFFF;
}

.lsd-book-platform-qr {
    display: block;
    width: 180px;
    height: 180px;
}

.lsd-book-platform-tip {
    margin: 11px 0 20px;
    color: #8A99AD;
    font-size: 13px;
}

.lsd-book-buy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    border-radius: 8px;
    color: #FFFFFF !important;
    font-size: 15px;
    font-weight: 600;
    transition: transform .2s ease, box-shadow .2s ease;
}

.lsd-book-buy-btn:hover {
    transform: translateY(-1px);
}

.lsd-book-buy-btn-tmall {
    background: #FF0036;
    box-shadow: 0 7px 16px rgba(255, 0, 54, .18);
}

.lsd-book-buy-btn-jd {
    background: #E1251B;
    box-shadow: 0 7px 16px rgba(225, 37, 27, .18);
}

@media screen and (max-width: 768px) {
    .lsd-book-purchase-hero {
        padding: 44px 0 48px;
    }

    .lsd-book-purchase-hero-inner {
        flex-direction: column;
        gap: 34px;
        min-height: 0;
        text-align: left;
    }

    .lsd-book-purchase-cover-wrap {
        width: 205px;
        flex-basis: auto;
    }

    .lsd-book-purchase-title {
        font-size: 26px;
    }

    .lsd-book-purchase-subtitle {
        font-size: 17px;
    }

    .lsd-book-status-section {
        padding: 42px 0;
    }

    .lsd-book-platform-list {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 26px;
    }

    .lsd-book-platform-card {
        padding: 22px 18px;
    }

}