/* ================================================
   课程体系专用样式 - courses.css
   藏后品牌官网
   ================================================ */

/* ---- 1. Hero Banner ---- */
.courses-hero {
    position: relative;
    height: 60vh;
    min-height: 400px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.courses-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(17,31,77,0.7) 0%, rgba(17,31,77,0.45) 100%);
}
.courses-hero-content {
    position: relative;
    z-index: 10;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 20px;
}
.courses-hero-tag {
    display: inline-block;
    color: var(--color-gold);
    font-family: var(--font-en);
    font-size: 1rem;
    letter-spacing: 0.3em;
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease both;
}
.courses-hero-title {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: 12px;
    animation: fadeInUp 0.8s 0.2s ease both;
    text-shadow: 0 4px 15px rgba(0,0,0,0.3);
}
.courses-hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.15em;
    animation: fadeInUp 0.8s 0.4s ease both;
}
.courses-hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    line-height: 0;
    z-index: 5;
}
.courses-hero-wave svg {
    width: 100%;
    height: 40px;
    display: block;
}

/* ---- 2. 成长路径 ---- */
.courses-growth {
    padding: 100px 0;
    background: var(--color-bg);
}
.section-sub-desc {
    max-width: 700px;
    margin: 15px auto 0;
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}
.growth-pillars {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 50px;
}
.growth-pillar {
    background: var(--color-white);
    border: 1px solid rgba(201,162,39,0.15);
    border-radius: 6px;
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.growth-pillar::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.growth-pillar:hover::before { transform: scaleX(1); }
.growth-pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--color-gold);
}
.pillar-num {
    display: inline-block;
    font-family: var(--font-en);
    font-size: 2rem;
    font-weight: 900;
    color: rgba(201,162,39,0.2);
    line-height: 1;
    margin-bottom: 10px;
}
.growth-pillar h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}
.pillar-desc {
    font-size: 0.82rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(201,162,39,0.12);
}
.growth-pillar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.growth-pillar ul li {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 2;
    padding-left: 14px;
    position: relative;
}
.growth-pillar ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 5px;
    height: 5px;
    background: var(--color-gold);
    border-radius: 50%;
}

/* ---- 3. 开店路径 ---- */
.courses-opening {
    padding: 100px 0;
    background: var(--color-white);
}
.opening-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}
.opening-step-group {
    background: var(--color-bg);
    border: 1px solid rgba(201,162,39,0.12);
    border-radius: 6px;
    padding: 28px 24px;
    transition: var(--transition);
}
.opening-step-group:hover {
    border-color: var(--color-gold);
    box-shadow: var(--shadow);
}
.opening-step-group h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-gold);
    display: inline-block;
}
.step-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.step-tags span {
    display: inline-block;
    background: var(--color-white);
    border: 1px solid rgba(201,162,39,0.15);
    padding: 6px 14px;
    border-radius: 3px;
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 0.03em;
    transition: var(--transition);
}
.step-tags span:hover {
    background: var(--color-gold);
    color: var(--color-white);
    border-color: var(--color-gold);
}

/* ---- 4. 门店痛点与解决方案 ---- */
.courses-painpoints {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #0d1b3e 100%);
    position: relative;
    overflow: hidden;
}
.courses-painpoints::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        45deg, transparent, transparent 20px,
        rgba(201,162,39,0.02) 20px, rgba(201,162,39,0.02) 40px
    );
    pointer-events: none;
}
.courses-painpoints .section-header .zh-title { color: var(--color-white); }
.courses-painpoints .section-header .en-title { color: var(--color-gold-light); }
.courses-painpoints .section-sub-desc { color: rgba(255,255,255,0.6); }

.courses-painpoints-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    position: relative;
    z-index: 1;
}
.painpoint-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(201,162,39,0.2);
    border-radius: 6px;
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
}
.painpoint-card:hover {
    transform: translateY(-6px);
    background: rgba(255,255,255,0.1);
    border-color: var(--color-gold);
    box-shadow: 0 12px 40px rgba(201,162,39,0.15);
}
.painpoint-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.painpoint-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}
.painpoint-en {
    font-family: var(--font-en);
    font-size: 0.78rem;
    color: var(--color-gold-light);
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}
.painpoint-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    margin-bottom: 16px;
    max-width: 200px;
    margin-left: auto;
    margin-right: auto;
}
.painpoint-desc {
    font-size: 0.88rem;
    line-height: 1.85;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}
.painpoint-solution {
    background: rgba(201,162,39,0.1);
    border: 1px solid rgba(201,162,39,0.25);
    border-radius: 4px;
    padding: 16px;
}
.solution-label {
    display: inline-block;
    background: var(--color-gold);
    color: var(--color-primary-dark);
    padding: 2px 12px;
    border-radius: 2px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}
.painpoint-solution p {
    font-size: 0.82rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.8);
    margin: 0;
}

/* 打法升级路径 */
.painpoint-upgrade {
    margin-top: 50px;
    text-align: center;
    position: relative;
    z-index: 1;
    background: rgba(201,162,39,0.08);
    border: 1px solid rgba(201,162,39,0.2);
    border-radius: 6px;
    padding: 36px 28px;
}
.painpoint-upgrade h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}
.upgrade-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.upgrade-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    color: var(--color-primary-dark);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 10px 28px;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(201,162,39,0.3);
}
.upgrade-arrow {
    color: var(--color-gold-light);
    font-size: 1.4rem;
    font-weight: 700;
}
.painpoint-upgrade > p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

/* ---- 5. 商业赋能体系 ---- */
.courses-business {
    padding: 100px 0;
    background: var(--color-bg);
}
.courses-business-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-top: 50px;
}
.courses-business-card {
    background: var(--color-white);
    border: 1px solid rgba(201,162,39,0.15);
    border-radius: 6px;
    padding: 36px 32px;
    transition: var(--transition);
}
.courses-business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: var(--color-gold);
}
.courses-business-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    margin: 0 0 6px;
}
.business-subtitle {
    font-family: var(--font-en);
    font-size: 0.82rem;
    color: var(--color-gold);
    letter-spacing: 0.15em;
    margin-bottom: 20px;
}
.business-flow {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--color-bg);
    border-radius: 4px;
}
.business-flow span {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
}
.flow-arrow {
    color: var(--color-gold) !important;
    font-weight: 700 !important;
}
.business-desc {
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--color-text-light);
    margin: 0;
}
.business-modules {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}
.biz-module {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 16px;
    background: var(--color-bg);
    border-radius: 4px;
    border-left: 3px solid var(--color-gold);
}
.biz-module-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}
.biz-module span:last-child {
    font-size: 0.8rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* ---- 6. 底部CTA ---- */
.courses-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #0d1b3e 100%);
    position: relative;
    overflow: hidden;
}
.courses-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: repeating-linear-gradient(
        -45deg, transparent, transparent 30px,
        rgba(201,162,39,0.02) 30px, rgba(201,162,39,0.02) 60px
    );
    pointer-events: none;
}
.courses-cta .cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    z-index: 1;
}
.courses-cta .cta-text h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}
.courses-cta .cta-text p {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.65);
    letter-spacing: 0.08em;
}
.courses-cta .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
    color: var(--color-primary-dark);
    padding: 16px 36px;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: 0 4px 20px rgba(201,162,39,0.4);
}
.courses-cta .cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(201,162,39,0.6);
}

/* ---- 7. Reveal滚动动画 ---- */
.reveal {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }

/* ---- 8. 响应式 ---- */
@media (max-width: 1024px) {
    .growth-pillars {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .opening-steps {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .courses-painpoints-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .courses-business-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .courses-cta .cta-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .courses-hero {
        height: 50vh;
        min-height: 320px;
    }
    .courses-growth,
    .courses-opening,
    .courses-painpoints,
    .courses-business {
        padding: 60px 0;
    }
    .growth-pillars {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .upgrade-flow {
        gap: 8px;
    }
    .upgrade-step {
        padding: 8px 18px;
        font-size: 0.88rem;
    }
    .courses-cta {
        padding: 50px 0;
    }
    .courses-cta .cta-text h2 {
        font-size: 1.4rem;
    }
}