/* ==========================================================================
   page_self_metal.html & page_self_pu.html — Shared material page styles
   Depends on: main.css (CSS variables), product-detail.css (.product-section, .section-title, .contact-cta-box, .related-products)
   ========================================================================== */

/* --- Hero --- */
.spm-hero {
    position: relative;
    background: radial-gradient(circle at 80% 20%, rgba(174, 218, 31, 0.12) 0%, var(--color-primary) 70%);
    color: var(--color-text-light);
    padding: 5rem 0 4rem;
    overflow: hidden;
}
.spm-hero::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, transparent 100%);
}
.spm-hero-inner {
    display: flex;
    align-items: center;
    gap: 3rem;
}
.spm-hero-info {
    flex: 1;
}
.spm-hero-eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1rem;
}
.spm-hero-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: #fff;
}
.spm-hero-sub {
    font-size: 1.05rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    max-width: 580px;
    margin-bottom: 2rem;
}
.spm-hero-breadcrumbs {
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
}
.spm-hero-breadcrumbs a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s;
}
.spm-hero-breadcrumbs a:hover {
    color: var(--color-accent);
}
.spm-hero-breadcrumbs .sep {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0.5rem;
}
.spm-hero-image {
    flex: 0 0 45%;
    max-width: 45%;
}
.spm-hero-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.spm-hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* --- Overview (text + image side by side) --- */
.spm-overview {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
}
.spm-overview-text p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}
.spm-overview-text p:last-child {
    margin-bottom: 0;
}
.spm-overview-text strong {
    color: var(--color-primary);
}
.spm-overview-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.1);
}

/* --- Spec table --- */
.spm-spec-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 31, 71, 0.06);
}
.spm-spec-table th {
    background: var(--color-primary);
    color: #fff;
    text-align: left;
    padding: 0.9rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}
.spm-spec-table td {
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.92rem;
    color: var(--color-text-dark);
    line-height: 1.6;
}
.spm-spec-table tr:nth-child(even) td {
    background: var(--color-bg-light);
}
.spm-spec-table tr:hover td {
    background: rgba(174, 218, 31, 0.08);
}
.spm-spec-table td:first-child {
    font-weight: 600;
    color: var(--color-primary);
    width: 30%;
    white-space: nowrap;
}

/* --- Application grid --- */
.spm-app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.spm-app-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}
.spm-app-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.08);
    border-color: rgba(174, 218, 31, 0.4);
}
.spm-app-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--color-primary);
}
.spm-app-card-icon svg {
    width: 28px;
    height: 28px;
}
.spm-app-card h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}
.spm-app-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

/* --- Two-column content (weaving, hook, etc.) --- */
.spm-twin-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.spm-twin-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}
.spm-twin-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.08);
    border-color: rgba(174, 218, 31, 0.4);
}
.spm-twin-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}
.spm-twin-card-body {
    padding: 1.5rem;
}
.spm-twin-card-body h4 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}
.spm-twin-card-body p {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}
.spm-twin-card-body ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.spm-twin-card-body ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
    color: var(--color-text-dark);
    line-height: 1.5;
}
.spm-twin-card-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* --- Hook style list --- */
.spm-hook-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.spm-hook-item {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.75rem;
    text-align: center;
    transition: all 0.3s ease;
}
.spm-hook-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.08);
    border-color: rgba(174, 218, 31, 0.4);
}
.spm-hook-item svg {
    width: 64px;
    height: 48px;
    color: var(--color-primary);
    margin-bottom: 1rem;
}
.spm-hook-item h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}
.spm-hook-item p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

/* --- Custom section --- */
.spm-custom-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    align-items: start;
}
.spm-custom-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.spm-custom-list li {
    position: relative;
    padding: 1rem 0 1rem 2.5rem;
    border-bottom: 1px solid var(--color-border);
}
.spm-custom-list li:last-child {
    border-bottom: none;
}
.spm-custom-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1.3rem;
    width: 24px;
    height: 24px;
    background: var(--color-accent-light);
    border-radius: 50%;
}
.spm-custom-list li::after {
    content: '';
    position: absolute;
    left: 7px;
    top: 1.55rem;
    width: 10px;
    height: 6px;
    border-left: 2px solid var(--color-accent);
    border-bottom: 2px solid var(--color-accent);
    transform: rotate(-45deg);
}
.spm-custom-list li strong {
    display: block;
    font-family: var(--font-heading);
    color: var(--color-primary);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}
.spm-custom-list li span {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}
.spm-custom-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.1);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .spm-app-grid,
    .spm-hook-list {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .spm-hero {
        padding: 3.5rem 0 3rem;
    }
    .spm-hero-inner {
        flex-direction: column;
    }
    .spm-hero-image {
        flex: none;
        max-width: 100%;
    }
    .spm-hero-title {
        font-size: 2rem;
    }
    .spm-overview,
    .spm-twin-grid,
    .spm-custom-grid {
        grid-template-columns: 1fr;
    }
    .spm-app-grid,
    .spm-hook-list {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   list_self.html — 4 列网格 & 材质对比板块
   ========================================================================== */

/* list_self.html 专属：4 列网格，不影响其他页面（如 list_metal.html） */
.self-grid-4col {
    grid-template-columns: repeat(4, 1fr) !important;
}
/* list_self.html 专属：卡片图片更扁一些 */
.self-grid-4col .weaving-card-img {
    aspect-ratio: 16 / 9 !important;
}
@media (max-width: 1200px) {
    .self-grid-4col {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}
@media (max-width: 768px) {
    .self-grid-4col {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}
@media (max-width: 500px) {
    .self-grid-4col {
        grid-template-columns: 1fr !important;
    }
}

/* list_self.html 专属：材质对比板块 (纯金属 vs 聚氨酯压条) */
.material-compare {
    padding: 4rem 0;
    background: #fff;
}
.material-compare-header {
    text-align: center;
    max-width: 1200px;
    margin: 0 auto 2.5rem;
}
.material-compare-header .section-desc {
    max-width: 900px;
    margin: 0.75rem auto 0;
    color: var(--color-text-muted);
    line-height: 1.7;
}
.material-compare-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}
.material-compare-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--color-bg-white);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    display: flex;
    flex-direction: column;
}
.material-compare-card:hover {
    box-shadow: 0 12px 40px rgba(0, 31, 71, 0.12);
    transform: translateY(-4px);
}
.material-compare-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    position: relative;
}
.material-compare-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.material-compare-card:hover .material-compare-image img {
    transform: scale(1.05);
}
.material-compare-body {
    padding: 1.75rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.material-compare-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 0.4rem 1rem;
    border-radius: 3px;
    margin-bottom: 1rem;
    align-self: flex-start;
}
.material-compare-tag--metal {
    background: var(--color-primary);
    color: #fff;
}
.material-compare-tag--pu {
    background: var(--color-accent);
    color: var(--color-primary);
}
.material-compare-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}
.material-compare-card .mc-desc {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}
.material-compare-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
}
.material-compare-features li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-dark);
    font-size: 0.92rem;
    line-height: 1.5;
}
.material-compare-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.45rem;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}
.material-compare-features li:nth-child(even)::before {
    background: var(--color-primary);
}
.material-compare-card .mc-cta {
    margin-top: auto;
}
@media (max-width: 768px) {
    .material-compare-grid {
        grid-template-columns: 1fr;
    }
}