/* =================================================================
   二维码区块 + 模态框
   ================================================================= */

/* ============== 首页中的二维码区块 ============== */
.qr-section {
    max-width: 1280px;
    width: calc(100% - 32px);
    margin: 80px auto;
    padding: 0 16px;
}
.qr-card {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 0;
    align-items: center;
    padding: 0;
    overflow: hidden;
}
.qr-text {
    padding: 50px 48px;
}
.qr-text h2 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    margin: 14px 0 16px;
    color: #1a1a1a;
    border-bottom: 3px solid #76b900;
    padding-bottom: 14px;
    display: inline-block;
}
.qr-text p {
    font-size: 15px;
    color: #4a4a4a;
    line-height: 1.7;
    margin-bottom: 28px;
    max-width: 460px;
}
.qr-trigger {
    cursor: pointer;
    font-family: inherit;
}

/* 右侧预览图（默认不显示，只在桌面端作为装饰） */
.qr-preview {
    height: 100%;
    min-height: 280px;
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(118,185,0,0.04);
    border-left: 1px solid var(--border-soft);
}
.qr-preview img {
    max-width: 220px;
    max-height: 220px;
    width: auto;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 0 5px rgba(0,0,0,0.3);
    border: 1px solid var(--border-soft);
}

/* ============== 模态框 ============== */
.qr-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    pointer-events: none;
    opacity: 0;
    transition: opacity .25s;
}
.qr-modal.is-open {
    pointer-events: auto;
    opacity: 1;
}

/* 背景遮罩 */
.qr-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* 模态框主体（液态玻璃硬质卡） */
.qr-modal-box {
    position: relative;
    width: 100%;
    max-width: 440px;
    padding: 36px 36px 32px;
    text-align: center;
    transform: scale(0.92) translateY(20px);
    transition: transform .3s cubic-bezier(.2,.7,.3,1);
    /* 继承 .glass-card 的液态玻璃效果，额外加深一点对比 */
    box-shadow:
        inset  2px -2px 1px -1px rgba(255,255,255,0.95),
        inset -2px  2px 1px -1px rgba(255,255,255,0.95),
        inset  6px -6px 1px -6px rgba(255,255,255,0.6),
        inset -6px  6px 1px -6px rgba(255,255,255,0.6),
        inset  0  0  2px  rgba(0,0,0,0.1),
        0 25px 60px -10px rgba(0,0,0,0.5);
}
.qr-modal.is-open .qr-modal-box {
    transform: scale(1) translateY(0);
}

/* 关闭按钮 */
.qr-modal-close {
    position: absolute;
    top: 14px; right: 14px;
    width: 32px; height: 32px;
    background: transparent;
    border: 1px solid var(--border-soft);
    border-radius: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
    padding: 0;
}
.qr-modal-close:hover {
    border-color: #76b900;
    background: #76b900;
}
.qr-modal-close span {
    position: absolute;
    width: 14px; height: 2px;
    background: #1a1a1a;
}
.qr-modal-close span:nth-child(1) { transform: rotate(45deg); }
.qr-modal-close span:nth-child(2) { transform: rotate(-45deg); }
.qr-modal-close:hover span { background: #fff; }

.qr-modal-kicker {
    font-size: 11px;
    letter-spacing: 3px;
    color: #76b900;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 8px;
}
.qr-modal-title {
    font-size: 22px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 22px;
    color: #1a1a1a;
}

/* 图片容器：液态玻璃"画框" */
.qr-modal-img-wrap {
    position: relative;
    display: inline-block;
    padding: 18px;
    background: rgba(255,255,255,0.7);
    border: 1px double rgba(51,51,51,0.1);
    border-radius: 8px;
    box-shadow:
        inset  2px -2px 1px -1px rgba(255,255,255,1),
        inset -2px  2px 1px -1px rgba(255,255,255,1),
        inset  4px -4px 1px -4px rgba(255,255,255,0.7),
        inset -4px  4px 1px -4px rgba(255,255,255,0.7),
        inset  0  0  2px  rgba(0,0,0,0.08),
        0 0 5px rgba(0,0,0,0.3);
    overflow: hidden;
}
.qr-modal-img-wrap::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(45deg,
        rgba(255,255,255,0.5) 0%, transparent 35%,
        transparent 65%, rgba(255,255,255,0.4) 100%);
    mix-blend-mode: screen;
    pointer-events: none;
    border-radius: inherit;
}
.qr-modal-img-wrap::before {
    /* 边框上的 NVIDIA 绿高亮 */
    content: '';
    position: absolute;
    inset: 8px;
    border: 1px solid #76b900;
    border-radius: 4px;
    pointer-events: none;
    z-index: 2;
}
.qr-modal-img-wrap img {
    display: block;
    width: 280px;
    height: 280px;
    object-fit: contain;
    border-radius: 4px;
    position: relative;
    z-index: 1;
}

.qr-modal-tip {
    margin-top: 18px;
    font-size: 13px;
    color: #757575;
    font-weight: 400;
}

/* ============== 响应式 ============== */
@media (max-width: 900px) {
    .qr-card {
        grid-template-columns: 1fr;
    }
    .qr-text { padding: 36px 28px; }
    .qr-text h2 { font-size: 24px; }
    .qr-preview { display: none; }
    .qr-modal-img-wrap img { width: 220px; height: 220px; }
}
@media (max-width: 480px) {
    .qr-modal-box { padding: 28px 20px 24px; }
    .qr-modal-img-wrap img { width: 200px; height: 200px; }
    .qr-modal-img-wrap { padding: 14px; }
}