:root {
    --primary: #1E5BFF;
    --primary-dark: #0F3FCC;
    --primary-light: #EAF1FF;
    --text-primary: #1A1A1A;
    --text-secondary: #5C6470;
    --text-muted: #8A92A1;
    --border: #E8ECF1;
    --bg-page: #FFFFFF;
    --bg-section: #FAFBFD;
    --card-shadow: 0 2px 12px rgba(15, 30, 80, 0.06);
    --card-shadow-hover: 0 8px 24px rgba(30, 91, 255, 0.12);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --max-width: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
/* ============== Hero Section ============== */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(15, 30, 80, 0.18);
    aspect-ratio: 4 / 3;
    background: var(--bg-section);
}

.hero-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.hero-media:hover img {
    transform: scale(1.03);
}

.hero-content {
    padding: 4px 0;
}

.hero-eyebrow {
    display: inline-block;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 18px;
    letter-spacing: 0.3px;
}

.hero-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-title::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-left: 12px solid var(--primary);
    flex-shrink: 0;
}

.hero-desc {
    font-size: 15.5px;
    line-height: 1.85;
    color: var(--text-secondary);
    margin-bottom: 14px;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    list-style: none;
}

.tag-list li {
    padding: 4px 12px;
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 11px;
    border-radius: 100px;
    transition: var(--transition);
}

.tag-list li:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* ============== Section Title (core equipment) ============== */
.section {
    max-width: var(--max-width);
    margin: 0 auto;
    margin-top: 20px;
    padding: 0;
}

.section-head {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -10px;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.section-sub {
    margin-top: 24px;
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

/* ============== Card Grid ============== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    border-color: transparent;
    box-shadow: var(--card-shadow-hover);
}

.card-media {
    aspect-ratio: 16 / 11;
    overflow: hidden;
    background: var(--bg-section);
}

.card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-media img {
    transform: scale(1.06);
}

.card-body {
    padding: 18px 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-desc {
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ============== Feature Strip ============== */
.feature-strip {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.feature-strip-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 36px 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.feature-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: grid;
    place-items: center;
    flex-shrink: 0;
    font-size: 22px;
}

.feature-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.feature-text {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* ============== Responsive ============== */
@media (max-width: 980px) {
    .hero {
        grid-template-columns: 1fr;
        padding: 40px 24px 32px;
        gap: 32px;
    }
    .hero-title {
        font-size: 28px;
    }
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-strip-wrap {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .nav-menu {
        display: none;
    }
    .menu-toggle {
        display: grid;
        place-items: center;
    }
    .section {
        padding: 24px 24px 60px;
    }
    .section-title {
        font-size: 24px;
    }
}

@media (max-width: 560px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 24px;
    }
    .nav-wrap {
        padding: 14px 20px;
    }
}

/* ============== Utility ============== */
.text-center { text-align: center; }
.mt-8 { margin-top: 32px; }
.mb-8 { margin-bottom: 32px; }