/* =========================================================
   痛点对比、解决方案、跑马灯、工作流与 FAQ 样式 (landing-sections.css)
   ========================================================= */

/* 2. 痛点与场景对比 (Pain Points) */
.pain-points-section {
    background: transparent;
    padding-top: 20px;
}

.vs-text {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-style: italic;
    margin: 0 10px;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    perspective: 1000px;
}

.compare-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.5s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.compare-card:hover {
    transform: translateY(-10px) rotateX(2deg) rotateY(2deg);
    box-shadow: var(--glass-shadow);
}

.ai-card {
    border-color: rgba(8, 145, 178, 0.3);
    background: linear-gradient(145deg, var(--glass-bg) 0%, rgba(8, 145, 178, 0.05) 100%);
}

.ai-card:hover {
    box-shadow: 0 15px 35px var(--primary-glow);
    border-color: var(--accent-color);
}

.card-badge {
    position: absolute;
    top: -15px;
    left: 40px;
    background: var(--text-secondary);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.card-badge.highlight {
    background: var(--accent-color);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.compare-card h3 {
    font-size: 1.5rem;
    margin-top: 10px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.compare-list {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
    flex-grow: 1;
}

.compare-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.traditional-card .compare-list li::before {
    content: '✖';
    position: absolute;
    left: 0;
    color: var(--danger-color);
}

.ai-card .compare-list li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: var(--success-color);
}

.data-indicator {
    font-size: 1.25rem;
    font-weight: 700;
    padding: 16px;
    border-radius: 12px;
    text-align: center;
}

.data-indicator.negative {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.data-indicator.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
}

/* 3. 核心解决方案 (AI Solutions) */
.solutions-section {
    position: relative;
}

.solutions-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vw;
    background: radial-gradient(circle, var(--secondary-glow) 0%, transparent 70%);
    opacity: 0.1;
    z-index: 0;
    pointer-events: none;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.solution-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
    backdrop-filter: blur(8px);
}

.solution-item:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: var(--glass-shadow);
}

html.day-theme .solution-item:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: rgba(0, 0, 0, 0.1);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: inline-block;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
    transition: transform 0.3s ease;
}

.solution-item:hover .solution-icon {
    transform: scale(1.1) rotate(5deg);
}

.solution-name {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.solution-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 4. 跑马灯 Marquee */
.marquee-section {
    width: 100%;
    overflow: hidden;
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    padding: 12px 0;
    white-space: nowrap;
    position: relative;
    z-index: 10;
}
.marquee-content {
    display: inline-block;
    animation: marqueeScroll 40s linear infinite;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
}
.marquee-content span {
    display: inline-block;
    vertical-align: middle;
}
.marquee-content .dot {
    margin: 0 40px;
    color: var(--accent-color);
}
@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}
.marquee-section:hover .marquee-content {
    animation-play-state: paused;
}

/* 5. 工作流可视化 Workflow */
.workflow-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}
.workflow-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 40px;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent-color), var(--secondary-glow), transparent);
    opacity: 0.3;
}
.workflow-step {
    position: relative;
    padding-left: 100px;
    margin-bottom: 40px;
}
.workflow-step:last-child {
    margin-bottom: 0;
}
.step-number {
    position: absolute;
    left: 20px;
    top: 0;
    width: 42px;
    height: 42px;
    background: var(--glass-bg);
    border: 1px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: var(--accent-color);
    box-shadow: 0 0 15px rgba(59,130,246,0.3);
    z-index: 2;
}
.step-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 30px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.step-card:hover {
    transform: translateX(10px);
    border-color: rgba(8, 145, 178, 0.4);
    box-shadow: var(--glass-shadow);
}
.step-title {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.step-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 6. 常见问题 FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    backdrop-filter: blur(8px);
}
.faq-question {
    width: 100%;
    text-align: left;
    padding: 24px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s ease;
}
.faq-question:hover {
    background: rgba(255,255,255,0.02);
}
@media (prefers-color-scheme: light) {
    .faq-question:hover {
        background: rgba(0,0,0,0.02);
    }
}
.faq-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}
.answer-inner {
    padding: 0 24px 24px;
    color: var(--text-secondary);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .workflow-timeline::before { left: 20px; }
    .step-number { left: 0; width: 36px; height: 36px; font-size: 0.9rem; }
    .workflow-step { padding-left: 60px; }
}