/* ================= Solutions 页专用样式 ================= */
.solutions-hero {
    padding: 160px 24px 80px 24px;
    background: linear-gradient(180deg, rgba(7, 17, 32, 0.6) 0%, var(--bg-dark) 100%),
                url('https://images.unsplash.com/photo-1522069169874-c58ec4b76be5?auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    background-attachment: fixed;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.solutions-hero h1 {
    font-size: 46px;
    font-weight: 800;
    color: var(--primary-text);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.solutions-hero p.tagline {
    color: var(--accent-danger);
    font-size: 18px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 40px;
}

.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.stat-box h2 {
    font-size: 40px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-box p {
    font-size: 13px;
    color: var(--secondary-text);
    line-height: 1.5;
}

.solutions-content-section {
    padding: 80px 24px;
    max-width: 1100px;
    margin: 0 auto;
}

.solution-title-main {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 50px;
    letter-spacing: -0.5px;
}

.problem-solution-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 45px;
    margin-bottom: 40px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.problem-solution-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.card-top-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 16px;
}

.main-icon-wrapper {
    font-size: 28px;
    display: inline-block;
    line-height: 1;
}

.card-header-badge {
    font-size: 12px;
    font-weight: 800;
    color: var(--accent-danger);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.problem-solution-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary-text);
    line-height: 1.3;
}

.card-inner-split {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    margin-top: 24px;
}

.section-sub-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.pain-points-side .section-sub-title {
    color: var(--accent-danger);
}

.scientific-side .section-sub-title {
    color: var(--accent);
}

.sub-icon {
    font-size: 18px;
}

.pain-list {
    list-style: none;
}

.pain-list li {
    font-size: 14px;
    color: var(--secondary-text);
    margin-bottom: 36px;
    position: relative;
    padding-left: 22px;
    line-height: 1.8;
}

.pain-list li:last-child {
    margin-bottom: 0;
}

.pain-list li::before {
    content: '✖';
    position: absolute;
    left: 0;
    color: var(--accent-danger);
    font-weight: 900;
    font-size: 14px;
}

.scientific-body {
    list-style: none;
}

.scientific-item {
    margin-bottom: 20px;
    position: relative;
    padding-left: 24px;
}

.scientific-item:last-child {
    margin-bottom: 0;
}

.scientific-item::before {
    content: '📖';
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 14px;
}

.scientific-item h5 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-text);
    margin-bottom: 6px;
    line-height: 1.4;
}

.scientific-item p {
    font-size: 14px;
    color: var(--secondary-text);
    line-height: 1.6;
}

.academic-citation {
    margin-top: 25px;
    padding-top: 15px;
    border-top: 1px dashed rgba(255, 255, 255, 0.05);
    font-size: 11px;
    color: rgba(148, 163, 184, 0.5);
    line-height: 1.6;
}

.academic-citation strong {
    color: rgba(255, 255, 255, 0.4);
    display: block;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 1024px) {
    .hero-stats-grid,
    .card-inner-split {
        grid-template-columns: 1fr;
    }

    .pain-list li {
        margin-bottom: 20px;
    }
}

@media (max-width: 576px) {
    .solutions-hero h1 {
        font-size: 32px;
    }
}