/* Landing Page Styles - Dual Product Showcase */
/* Elegant editorial design for 响声播客 + 响声App */

/* ============================================
   HERO SECTION - Split Design
   ============================================ */

.hero-split {
    background: linear-gradient(165deg, var(--color-cream) 0%, var(--color-cream-dark) 50%, #f0e6d8 100%);
    padding: 5rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%238b2635' fill-opacity='0.025'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10-10-4.477-10-10zm0 0c0 5.523-4.477 10-10 10s-10-4.477-10-10 4.477-10 10-10 10 4.477 10 10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.8;
}

.hero-content-wrapper {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-main {
    text-align: center;
    margin-bottom: 4rem;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3.5rem, 10vw, 6rem);
    font-weight: 700;
    color: var(--color-burgundy);
    letter-spacing: 0.15em;
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 20px rgba(139, 38, 53, 0.1);
}

.hero-subtitle {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    font-weight: 400;
    font-style: italic;
    color: var(--color-gray);
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.hero-decoration {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    margin: 1.5rem auto;
}

.hero-tagline {
    font-size: 1.15rem;
    color: var(--color-gray);
    max-width: 400px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ============================================
   PRODUCTS SHOWCASE
   ============================================ */

.products-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .products-showcase {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

.product-card {
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-decoration: none;
    border: 1px solid rgba(139, 38, 53, 0.05);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.product-visual {
    position: relative;
    padding: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
}

.podcast-card .product-visual {
    background: linear-gradient(135deg, #c41e3a 0%, #8b1538 100%);
}

.app-card .product-visual {
    background: linear-gradient(135deg, var(--color-burgundy) 0%, #6b1e2a 100%);
}

.product-image {
    width: 160px;
    height: 160px;
    border-radius: 24px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    transition: transform 0.4s ease;
}

.product-card:hover .product-image {
    transform: scale(1.03);
}

.podcast-image {
    border-radius: 16px;
}

.app-image {
    border-radius: 36px;
}

.product-info {
    padding: 1.75rem 2rem 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gold);
    margin-bottom: 0.5rem;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: 0.75rem;
}

.product-desc {
    font-size: 0.95rem;
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex: 1;
}

.product-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-burgundy);
    font-weight: 600;
    font-size: 0.95rem;
    transition: gap 0.3s ease;
}

.product-card:hover .product-cta {
    gap: 0.75rem;
}

/* ============================================
   SECTION LABELS
   ============================================ */

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-gold);
    margin-bottom: 1rem;
}

/* ============================================
   PODCAST SECTION
   ============================================ */

.section-podcast {
    background: white;
    padding: 6rem 0;
}

.podcast-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    align-items: start;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .podcast-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
}

.podcast-cover-large {
    position: relative;
}

.podcast-cover-large img {
    width: 100%;
    max-width: 280px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(196, 30, 58, 0.25);
}

@media (max-width: 768px) {
    .podcast-cover-large img {
        margin: 0 auto;
        display: block;
    }
}

.podcast-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.podcast-feature {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.feature-number {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.9rem;
    font-weight: 400;
    font-style: italic;
    color: var(--color-gold);
}

.podcast-feature h3 {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin: 0;
}

.podcast-feature p {
    font-size: 1rem;
    color: var(--color-gray);
    margin: 0;
    line-height: 1.7;
}

.podcast-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #c41e3a 0%, #8b1538 100%);
    color: white;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
    width: fit-content;
}

@media (max-width: 768px) {
    .podcast-cta {
        margin: 1rem auto 0;
    }
}

.podcast-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 30, 58, 0.4);
    color: white;
}

/* ============================================
   APP SECTION
   ============================================ */

.section-app {
    background: linear-gradient(to bottom, var(--color-cream-dark), var(--color-cream));
    padding: 6rem 0;
}

.app-content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .app-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }
}

.app-icon-large {
    display: flex;
    justify-content: center;
}

.app-icon-large img {
    width: 200px;
    height: 200px;
    border-radius: 44px;
    box-shadow: 0 25px 70px rgba(139, 38, 53, 0.25);
}

.app-features {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.app-feature {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .app-feature {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

.app-feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-burgundy);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
}

.app-feature-text h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin: 0 0 0.35rem;
}

.app-feature-text p {
    font-size: 0.95rem;
    color: var(--color-gray);
    margin: 0;
    line-height: 1.6;
}

.app-store-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
    padding: 1rem 2rem;
    background: var(--color-charcoal);
    color: white;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    width: fit-content;
}

@media (max-width: 768px) {
    .app-store-badge {
        margin: 0.5rem auto 0;
    }
}

.app-store-badge:hover {
    background: #3d3d3d;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    color: white;
}

.app-store-badge svg {
    width: 22px;
    height: 22px;
}

/* ============================================
   PHILOSOPHY SECTION
   ============================================ */

.section-philosophy {
    background: linear-gradient(135deg, var(--color-burgundy) 0%, #6b1e2a 100%);
    padding: 6rem 0;
    text-align: center;
}

.philosophy-content {
    max-width: 700px;
    margin: 0 auto;
}

.philosophy-quote {
    margin: 0;
    padding: 0;
    border: none;
}

.philosophy-quote p {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 400;
    color: white;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.philosophy-quote footer {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.1rem;
    font-style: italic;
    color: var(--color-gold);
}

/* ============================================
   FOOTER ENHANCEMENTS
   ============================================ */

footer {
    background: #1a1a1a;
}

/* ============================================
   SMOOTH SCROLL
   ============================================ */

html {
    scroll-behavior: smooth;
}

/* ============================================
   NAVIGATION ENHANCEMENTS
   ============================================ */

.nav-links a[href^="#"] {
    position: relative;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .hero-split {
        padding: 3rem 0 4rem;
    }

    .hero-main {
        margin-bottom: 2.5rem;
    }

    .product-visual {
        min-height: 180px;
        padding: 2rem;
    }

    .product-image {
        width: 130px;
        height: 130px;
    }

    .product-info {
        padding: 1.5rem;
    }

    .section-podcast,
    .section-app,
    .section-philosophy {
        padding: 4rem 0;
    }

    .app-icon-large img {
        width: 160px;
        height: 160px;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-card {
    animation: fadeInUp 0.6s ease backwards;
}

.product-card:nth-child(1) {
    animation-delay: 0.1s;
}

.product-card:nth-child(2) {
    animation-delay: 0.2s;
}