/* ===== 应用中心（.page-products）页面专属样式 ===== */
.page-products {
    --product-primary: var(--color-primary);
    --product-secondary: var(--color-secondary);
    --product-accent: var(--color-accent);
    --product-card-bg: var(--color-card-bg);
    --product-border: var(--color-border);
    --product-text: var(--color-text-primary);
    --product-text-muted: var(--color-text-secondary);

    background-color: var(--color-dark-bg);
    color: var(--product-text);
    line-height: var(--lh-body);
    font-family: var(--font-body);
    font-weight: var(--fw-body);
    letter-spacing: var(--ls-body);
}

/* 面包屑导航 */
.page-products .breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1.5rem 0 0.5rem;
    list-style: none;
    font-size: var(--fs-small);
    color: var(--product-text-muted);
}
.page-products .breadcrumb a {
    color: var(--product-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.page-products .breadcrumb a:hover,
.page-products .breadcrumb a:focus-visible {
    color: var(--product-secondary);
}
.page-products .breadcrumb li + li::before {
    content: "/";
    margin-right: 0.5rem;
    color: var(--product-border);
}
.page-products .breadcrumb li[aria-current="page"] {
    color: var(--product-secondary);
}

/* 标题通用 */
.page-products .section-title {
    font-family: var(--font-heading);
    font-weight: var(--fw-heading);
    font-size: var(--fs-heading);
    line-height: var(--lh-heading);
    letter-spacing: var(--ls-heading);
    color: var(--product-secondary);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}
.page-products .section-desc {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--product-text-muted);
    font-size: 1.1rem;
}

/* 分割装饰 */
.page-products .section-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--product-secondary) 50%, transparent 100%);
    margin: var(--spacing-xl) auto;
    max-width: 200px;
    position: relative;
}
.page-products .section-divider::before {
    content: "";
    position: absolute;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 10px;
    height: 10px;
    background: var(--product-accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--product-accent);
}

/* ===== 英雄区 ===== */
.page-products .app-hero {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    max-width: var(--container-max);
    margin: 0 auto;
    align-items: center;
}
.page-products .hero-text {
    flex: 1;
    padding: 0 var(--spacing-md);
    text-align: center;
}
.page-products .hero-title {
    font-family: var(--font-heading);
    font-weight: var(--fw-heading);
    font-size: clamp(2rem, 6vw, 4.5rem);
    line-height: var(--lh-heading);
    letter-spacing: var(--ls-heading);
    background: linear-gradient(135deg, var(--product-secondary), #fff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--spacing-md);
}
.page-products .hero-desc {
    font-size: 1.15rem;
    color: var(--product-text-muted);
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
}
.page-products .hero-cta {
    display: inline-block;
    background: var(--product-secondary);
    color: #0D0D0D;
    font-weight: var(--fw-bold);
    padding: 0.85rem 2.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 1.1rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}
.page-products .hero-cta:hover,
.page-products .hero-cta:focus-visible {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(255, 215, 0, 0.4);
}
.page-products .hero-note {
    margin-top: var(--spacing-md);
    font-size: var(--fs-small);
    color: var(--product-text-muted);
}
.page-products .hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 var(--spacing-md);
}
.page-products .hero-main-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card), 0 0 30px rgba(106, 13, 173, 0.3);
    border: 1px solid var(--product-border);
}

/* ===== 福利区 + 翻转卡 ===== */
.page-products .benefits-section {
    padding: var(--spacing-xl) 0;
}
.page-products .benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}
.page-products .flip-card {
    perspective: 1000px;
    cursor: pointer;
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
    aspect-ratio: 1 / 1;
}
.page-products .flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
}
.page-products .flip-card:hover .flip-card-inner,
.page-products .flip-card:focus-within .flip-card-inner {
    transform: rotateY(180deg);
}
.page-products .flip-card-front,
.page-products .flip-card-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    border: 1px solid var(--product-border);
    box-shadow: var(--shadow-card);
}
.page-products .flip-card-front {
    background: linear-gradient(145deg, var(--product-card-bg), #2a1a4a);
}
.page-products .flip-card-front img {
    max-width: 70%;
    height: auto;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 15px rgba(255, 215, 0, 0.3));
}
.page-products .flip-trigger {
    font-family: var(--font-accent);
    font-weight: var(--fw-bold);
    font-style: italic;
    color: var(--product-secondary);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}
.page-products .flip-card-back {
    background: linear-gradient(145deg, #2a1a4a, var(--product-card-bg));
    transform: rotateY(180deg);
    text-align: left;
}
.page-products .benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
}
.page-products .benefits-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--product-border);
    font-weight: var(--fw-bold);
    color: var(--product-secondary);
    font-size: 1.1rem;
}
.page-products .benefits-list li:last-child {
    border-bottom: none;
}
.page-products .benefits-list li::before {
    content: "✦ ";
    color: var(--product-accent);
}
.page-products .benefits-intro {
    padding: var(--spacing-lg);
    background: var(--product-card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--product-border);
    box-shadow: var(--shadow-card);
}
.page-products .benefits-intro h3 {
    font-family: var(--font-heading);
    font-weight: var(--fw-heading);
    font-size: 1.5rem;
    color: var(--product-text);
    margin-bottom: var(--spacing-sm);
}
.page-products .benefits-intro p {
    color: var(--product-text-muted);
    margin-bottom: var(--spacing-lg);
}

/* ===== 下载区 ===== */
.page-products .download-section {
    padding: var(--spacing-xl) 0;
}
.page-products .download-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    align-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}
.page-products .qr-code {
    max-width: 280px;
    padding: var(--spacing-md);
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glow);
    border: 2px solid var(--product-accent);
}
.page-products .qr-code img {
    max-width: 100%;
    height: auto;
    display: block;
}
.page-products .download-info {
    text-align: center;
    max-width: 500px;
}
.page-products .download-steps {
    text-align: left;
    margin-bottom: var(--spacing-lg);
    padding-left: 1.5rem;
}
.page-products .download-steps li {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    color: var(--product-text);
    line-height: 1.5;
}
.page-products .download-steps li::marker {
    color: var(--product-secondary);
    font-weight: var(--fw-bold);
}
.page-products .download-tip {
    color: var(--product-text-muted);
    margin-bottom: var(--spacing-lg);
    font-size: var(--fs-small);
}

/* ===== 操作指引区 ===== */
.page-products .guide-section {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
}
.page-products .guide-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto var(--spacing-lg);
    padding: 0 var(--spacing-md);
}
.page-products .guide-step {
    background: var(--product-card-bg);
    border: 1px solid var(--product-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.page-products .guide-step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}
.page-products .step-icon {
    max-width: 100px;
    margin: 0 auto var(--spacing-md);
}
.page-products .step-icon img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.1);
}
.page-products .step-title {
    font-family: var(--font-heading);
    font-weight: var(--fw-heading);
    font-size: 1.25rem;
    color: var(--product-secondary);
    margin-bottom: var(--spacing-sm);
}
.page-products .step-desc {
    color: var(--product-text-muted);
    font-size: var(--fs-small);
    line-height: 1.6;
    margin-bottom: 0;
}
.page-products .guide-cta {
    text-align: center;
    font-size: 1rem;
    color: var(--product-text-muted);
}
.page-products .guide-cta a {
    color: var(--product-accent);
    text-decoration: none;
    font-weight: var(--fw-bold);
    transition: color var(--transition-fast);
}
.page-products .guide-cta a:hover {
    color: var(--product-secondary);
    text-decoration: underline;
}

/* ===== 响应式（桌面） ===== */
@media (min-width: 768px) {
    .page-products .app-hero {
        flex-direction: row;
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: 70vh;
    }
    .page-products .hero-text {
        text-align: left;
        padding: var(--spacing-xl);
    }
    .page-products .hero-desc {
        margin: 0 0 var(--spacing-lg);
    }
    .page-products .hero-title {
        font-size: clamp(2.5rem, 5vw, 4.5rem);
    }
    .page-products .hero-main-img {
        max-width: 90%;
    }

    .page-products .benefits-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    .page-products .benefits-intro {
        padding: var(--spacing-xl);
    }

    .page-products .download-content {
        flex-direction: row;
        justify-content: center;
    }
    .page-products .download-info {
        text-align: left;
    }
    .page-products .download-steps {
        padding-left: 2rem;
    }

    .page-products .guide-steps {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .page-products .app-hero {
        padding: var(--spacing-2xl) var(--spacing-xl);
    }
    .page-products .hero-text {
        padding: var(--spacing-xl) var(--spacing-2xl);
    }
}