/**
 * Product Pillar Pages Styles
 * 支柱页公共样式 - 无机布/电动/玻璃挡烟垂壁
 */

/* ============================================
   左侧浮动章节导航样式
   ============================================ */
.pillar-side-nav {
    position: fixed;
    left: 80px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    max-width: 160px;
    display: none;
}

@media (min-width: 1200px) {
    .pillar-side-nav {
        display: block;
    }
}

@media (min-width: 1400px) {
    .pillar-side-nav {
        left: 100px;
    }
}

.pillar-side-nav-title {
    font-size: 12px;
    font-weight: 600;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}

.pillar-side-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pillar-side-nav-list li {
    margin-bottom: 4px;
}

.pillar-side-nav-list li:last-child {
    margin-bottom: 0;
}

.pillar-side-nav-link {
    display: block;
    padding: 8px 12px;
    font-size: 13px;
    color: #666;
    text-decoration: none;
    border-radius: 4px;
    transition: all 150ms;
    border-left: 2px solid transparent;
}

.pillar-side-nav-link:hover {
    color: #DC2626;
    background: rgba(220,38,38,0.05);
}

.pillar-side-nav-link.active {
    color: #DC2626;
    background: rgba(220,38,38,0.08);
    border-left-color: #DC2626;
    font-weight: 500;
}

/* 支柱页容器宽度 */
.pillar-smoke-curtain .container {
    max-width: 950px;
}

/* 支柱页section间距 */
.pillar-smoke-curtain .section {
    padding: 24px 0;
}

@media (max-width: 768px) {
    .pillar-smoke-curtain .section {
        padding: 16px 0;
    }
}

/* 支柱页container背景 */
.pillar-smoke-curtain .section .container {
    background: #f0f0f0;
    padding: 40px 32px;
    border-radius: 8px;
}

@media (max-width: 768px) {
    .pillar-smoke-curtain .section .container {
        padding: 24px 16px;
    }
}

/* 技术参数区无背景色 */
.pillar-specs .container {
    background: transparent;
    padding: 40px 0;
    border-radius: 0;
}

/* ============================================
   英雄区样式
   ============================================ */
.pillar-hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding: 40px 0 80px;
    overflow: hidden;
}

.pillar-hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    z-index: 0;
}

.pillar-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.pillar-hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .pillar-hero-title {
        font-size: 2rem;
    }
}

.pillar-hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 32px;
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .pillar-hero-subtitle {
        font-size: 1rem;
    }
}

.pillar-hero-badges {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.pillar-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    backdrop-filter: blur(8px);
}

.pillar-badge svg {
    color: #22C55E;
}

.pillar-badge-cert {
    background: rgba(34,197,94,0.15);
    border-color: rgba(34,197,94,0.3);
    font-size: 12px;
}

.pillar-certs-row {
    display: flex;
    gap: 12px;
    flex-wrap: nowrap;
}

.pillar-hero-cta {
    font-size: 1.125rem;
    padding: 18px 36px;
    animation: pulse-glow 2s infinite;
}

/* ============================================
   产品介绍区样式
   ============================================ */
.pillar-intro-content {
    font-size: 1rem;
    color: #555;
    line-height: 1.8;
}

.pillar-intro-content p {
    margin-bottom: 16px;
}

.pillar-intro-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: nowrap;
    margin-bottom: 32px;
}

.pillar-flow-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    flex: 1;
    min-width: 0;
}

.pillar-flow-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #DC2626;
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 12px;
    flex-shrink: 0;
}

.pillar-flow-text h3 {
    font-size: 13px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 2px;
}

.pillar-flow-text p {
    font-size: 11px;
    color: #666;
}

.pillar-flow-arrow {
    color: #DC2626;
    font-size: 1rem;
    font-weight: 700;
    flex-shrink: 0;
}

@media (max-width: 640px) {
    .pillar-flow-text p {
        display: none;
    }
    .pillar-flow-text h3 {
        font-size: 12px;
    }
    .pillar-flow-num {
        width: 24px;
        height: 24px;
        font-size: 11px;
    }
    .pillar-flow-item {
        padding: 8px 10px;
    }
    .pillar-intro-flow {
        gap: 4px;
    }
    .pillar-flow-arrow {
        font-size: 0.875rem;
    }
}

/* 价格区样式 */
.pillar-price {
    margin-top: 24px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(34,197,94,0.05), rgba(34,197,94,0.02));
    border-color: rgba(34,197,94,0.2);
}

.pillar-price-title {
    font-size: 1rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-price-grid {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.pillar-price-2col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .pillar-price-2col {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-price-group {
    padding: 20px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-price-group-title {
    font-size: 14px;
    font-weight: 600;
    color: #DC2626;
    margin-bottom: 12px;
}

.pillar-price-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pillar-price-item {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.pillar-price-label {
    font-size: 14px;
    color: #666;
}

.pillar-price-value {
    font-size: 1rem;
    color: #166534;
}

.pillar-price-value strong {
    font-size: 1.5rem;
    color: #DC2626;
}

.pillar-price-note {
    margin-top: 16px;
    font-size: 12px;
    color: #888;
}

/* ============================================
   参数区样式
   ============================================ */

.pillar-specs-intro {
    font-size: 1.125rem;
    color: #555;
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: left;
}

.pillar-specs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (min-width: 768px) {
    .pillar-specs-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-spec-card {
    padding: 32px;
}

.pillar-spec-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e0e0e0;
}

.pillar-spec-thickness {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: #DC2626;
}

.pillar-spec-type {
    padding: 4px 12px;
    background: rgba(220,38,38,0.1);
    color: #DC2626;
    font-size: 13px;
    font-weight: 600;
    border-radius: 4px;
}

.pillar-spec-body {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
}

.pillar-spec-body strong {
    color: #1a1a1a;
}

.pillar-spec-detail {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(220,38,38,0.05), rgba(220,38,38,0.02));
    border-color: rgba(220,38,38,0.2);
}

.pillar-spec-detail-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.1);
    border-radius: 50%;
    color: #DC2626;
}

.pillar-spec-detail-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.pillar-spec-detail-content p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

/* 国标参数表样式 */
.pillar-spec-standard {
    margin-top: 32px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(220,38,38,0.03), rgba(220,38,38,0.01));
    border-color: rgba(220,38,38,0.15);
}

.pillar-spec-standard-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.pillar-spec-standard-intro {
    font-size: 14px;
    color: #666;
    margin-bottom: 24px;
}

.pillar-spec-table-wrap {
    overflow-x: auto;
}

.pillar-spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-spec-table th {
    background: #1a1a2e;
    color: #fff;
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 13px;
}

.pillar-spec-table td {
    padding: 14px 16px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

.pillar-spec-table tbody tr:hover {
    background: rgba(220,38,38,0.03);
}

.pillar-spec-cat {
    background: rgba(220,38,38,0.05);
    font-weight: 600;
    color: #DC2626;
    white-space: nowrap;
}

.pillar-spec-table td strong {
    color: #1a1a1a;
}

.pillar-spec-standard-note {
    margin-top: 20px;
    font-size: 13px;
    color: #888;
    line-height: 1.7;
    padding-left: 16px;
    border-left: 3px solid #DC2626;
}

.pillar-specs-note {
    margin-top: 16px;
    font-size: 13px;
    color: #888;
    text-align: center;
}

/* ============================================
   优势区样式
   ============================================ */
.pillar-advantages-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .pillar-advantages-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-advantages-6 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .pillar-advantages-6 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .pillar-advantages-6 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-adv-card {
    padding: 28px;
}

.pillar-adv-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 8px;
    margin-bottom: 20px;
    color: #DC2626;
}

.pillar-adv-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.pillar-adv-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 8px;
}

.pillar-adv-highlight {
    color: #DC2626 !important;
    font-weight: 600;
}

/* ============================================
   画廊样式
   ============================================ */

.pillar-gallery-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .pillar-gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-gallery-item {
    overflow: hidden;
}

.pillar-gallery-img {
    height: 200px;
    background: linear-gradient(135deg, rgba(220,38,38,0.1), rgba(0,0,0,0.05));
    overflow: hidden;
}

.pillar-gallery-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms;
}

.pillar-gallery-item:hover .pillar-gallery-img img {
    transform: scale(1.05);
}

.pillar-gallery-content {
    padding: 24px;
}

.pillar-gallery-content h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.pillar-gallery-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

.pillar-gallery-cert {
    border-color: rgba(220,38,38,0.3);
}

/* ============================================
   案例区样式
   ============================================ */
.pillar-cases-intro {
    font-size: 1.125rem;
    color: #555;
    margin-bottom: 40px;
}

.pillar-cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

@media (min-width: 768px) {
    .pillar-cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-case-card {
    padding: 28px;
    text-align: center;
}

.pillar-case-card.pillar-case-card--img {
    padding: 0;
    text-align: left;
    overflow: hidden;
}

.pillar-case-img {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.pillar-case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.pillar-case-card--img:hover .pillar-case-img img {
    transform: scale(1.05);
}

.pillar-case-body {
    padding: 20px;
}

.pillar-case-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 50%;
    color: #DC2626;
}

.pillar-case-card--img .pillar-case-icon {
    display: none;
}

.pillar-case-label {
    font-size: 12px;
    color: #DC2626;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.pillar-case-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.pillar-case-card p {
    font-size: 13px;
    color: #666;
    margin: 0;
}

.pillar-cases-note {
    font-size: 13px;
    color: #888;
    text-align: center;
    font-style: italic;
}

/* ============================================
   FAQ样式
   ============================================ */

.pillar-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.pillar-faq-item {
    margin-bottom: 16px;
    overflow: hidden;
}

.pillar-faq-details {
    width: 100%;
}

.pillar-faq-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    list-style: none;
}

.pillar-faq-summary::-webkit-details-marker {
    display: none;
}

.pillar-faq-summary::after {
    content: '';
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23DC2626' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    flex-shrink: 0;
    transition: transform 300ms;
}

.pillar-faq-details[open] .pillar-faq-summary::after {
    transform: rotate(180deg);
}

.pillar-faq-q {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    padding-right: 16px;
}

.pillar-faq-answer {
    padding: 0 24px 20px;
}

.pillar-faq-answer p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

/* ============================================
   对比表样式
   ============================================ */
.pillar-compare-table-wrap {
    padding: 0;
    overflow-x: auto;
}

.pillar-compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-compare-table th {
    background: #1a1a2e;
    color: #fff;
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
}

.pillar-compare-table th span {
    font-weight: 400;
    opacity: 0.7;
    font-size: 12px;
}

.pillar-compare-table td {
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: top;
    line-height: 1.7;
}

.pillar-compare-bad {
    color: #DC2626;
    font-weight: 600;
    white-space: nowrap;
}

.pillar-compare-good {
    background: rgba(34, 197, 94, 0.05);
    color: #166534;
}

.pillar-compare-good strong {
    color: #166534;
}

.pillar-compare-cat {
    background: rgba(220,38,38,0.05);
    font-weight: 600;
    color: #DC2626;
    white-space: nowrap;
}

.pillar-compare-summary {
    margin-top: 16px;
    font-size: 14px;
    color: #555;
    text-align: center;
}

/* ============================================
   流程样式
   ============================================ */

.pillar-process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .pillar-process-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .pillar-process-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.pillar-process-item {
    padding: 28px;
    text-align: center;
    position: relative;
}

.pillar-process-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(220,38,38,0.15);
    margin-bottom: 16px;
}

.pillar-process-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 50%;
    color: #DC2626;
}

.pillar-process-item h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.pillar-process-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* ============================================
   CTA区样式
   ============================================ */
.pillar-cta-section {
    padding: 24px 0;
    text-align: center;
}

.pillar-cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .pillar-cta-section h2 {
        font-size: 1.5rem;
    }
}

.pillar-cta-section > .container > p {
    font-size: 1.125rem;
    color: #666;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.pillar-cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 2.5rem;
    font-weight: 700;
    color: #DC2626;
    text-decoration: none;
    margin-bottom: 48px;
    transition: all 300ms;
}

@media (max-width: 768px) {
    .pillar-cta-phone {
        font-size: 1.75rem;
        flex-direction: column;
        gap: 4px;
    }
}

.pillar-cta-phone:hover {
    color: #B91C1C;
    transform: scale(1.05);
}

.pillar-cta-phone span {
    font-size: 1rem;
    font-weight: 400;
    color: #666;
}

.pillar-cta-form-wrap {
    max-width: 500px;
    margin: 0 auto;
    padding: 32px;
    text-align: left;
}

.pillar-cta-form-title {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 24px;
    text-align: center;
}

.pillar-cta-form input,
.pillar-cta-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 15px;
    margin-bottom: 16px;
    transition: border-color 150ms;
}

.pillar-cta-form input:focus,
.pillar-cta-form textarea:focus {
    outline: none;
    border-color: #DC2626;
    box-shadow: 0 0 0 3px rgba(220,38,38,0.1);
}

.pillar-cta-form textarea {
    resize: none;
    height: 100px;
}

.pillar-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .pillar-form-row {
        grid-template-columns: 1fr;
    }
}

.pillar-form-submit {
    width: 100%;
    justify-content: center;
    padding: 16px;
}

/* ============================================
   内链区样式
   ============================================ */
.pillar-links-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background: #e0e0e0;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

@media (min-width: 640px) {
    .pillar-links-list {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-link-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 16px;
    background: #fff;
    text-decoration: none;
    color: inherit;
    transition: background 150ms;
}

.pillar-link-item:hover {
    background: rgba(220,38,38,0.03);
}

.pillar-link-info {
    flex: 1;
    min-width: 0;
}

.pillar-link-title {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    line-height: 1.5;
    transition: color 150ms;
}

.pillar-link-item:hover .pillar-link-title {
    color: #DC2626;
}

.pillar-link-excerpt {
    font-size: 12px;
    color: #888;
    margin-top: 4px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.pillar-link-date {
    font-size: 12px;
    color: #999;
    flex-shrink: 0;
}

/* ============================================
   硅胶布材质详解样式
   ============================================ */
.pillar-material-content {
    padding: 32px;
}

.pillar-material-intro {
    margin-bottom: 24px;
}

.pillar-material-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-material-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .pillar-material-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-material-card {
    padding: 24px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-material-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 8px;
    margin-bottom: 16px;
    color: #DC2626;
}

.pillar-material-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.pillar-material-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

.pillar-material-compare {
    margin-top: 24px;
}

.pillar-material-compare h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-material-compare-table-wrap {
    overflow-x: auto;
}

.pillar-material-compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-material-compare-table th {
    background: #f5f5f5;
    color: #333;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #e0e0e0;
}

.pillar-material-compare-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

.pillar-material-compare-table tr:hover {
    background: rgba(220,38,38,0.03);
}

/* ============================================
   漏烟量测试样式
   ============================================ */
.pillar-leakage-content {
    padding: 32px;
}

.pillar-leakage-intro {
    margin-bottom: 24px;
}

.pillar-leakage-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-leakage-standard {
    margin-bottom: 32px;
}

.pillar-leakage-standard h3,
.pillar-leakage-method h3,
.pillar-leakage-compare h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-leakage-standard-box {
    background: rgba(220,38,38,0.05);
    border: 1px solid rgba(220,38,38,0.2);
    border-radius: 8px;
    padding: 24px;
    text-align: center;
}

.pillar-leakage-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #DC2626;
    margin-bottom: 8px;
}

.pillar-leakage-source {
    font-size: 13px;
    color: #666;
}

.pillar-leakage-method-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .pillar-leakage-method-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-leakage-method-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-leakage-method-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #DC2626;
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.pillar-leakage-method-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.pillar-leakage-method-content p {
    font-size: 13px;
    color: #666;
}

.pillar-leakage-compare {
    margin-top: 32px;
    margin-bottom: 24px;
}

.pillar-leakage-compare-table-wrap {
    overflow-x: auto;
}

.pillar-leakage-compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-leakage-compare-table th {
    background: #f5f5f5;
    color: #333;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #e0e0e0;
}

.pillar-leakage-compare-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

.pillar-leakage-note {
    padding: 16px;
    background: rgba(34,197,94,0.05);
    border-radius: 8px;
}

.pillar-leakage-note p {
    font-size: 14px;
    color: #555;
}

/* ============================================
   储烟仓计算样式
   ============================================ */
.pillar-calc-content {
    padding: 32px;
}

.pillar-calc-intro {
    margin-bottom: 24px;
}

.pillar-calc-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-calc-formula {
    margin-bottom: 32px;
}

.pillar-calc-formula h3,
.pillar-calc-example h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-formula-box {
    background: rgba(220,38,38,0.05);
    border: 1px solid rgba(220,38,38,0.2);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    margin-bottom: 12px;
}

.pillar-formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.125rem;
    color: #DC2626;
    font-weight: 600;
}

.pillar-formula-note {
    font-size: 13px;
    color: #666;
    text-align: center;
}

.pillar-calc-factors {
    margin-bottom: 32px;
}

.pillar-calc-factors h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-calc-factors-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .pillar-calc-factors-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-calc-factor {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-calc-factor-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 8px;
    color: #DC2626;
    flex-shrink: 0;
}

.pillar-calc-factor-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.pillar-calc-factor-content p {
    font-size: 13px;
    color: #666;
}

.pillar-calc-example {
    margin-top: 32px;
}

.pillar-calc-example-table-wrap {
    overflow-x: auto;
}

.pillar-calc-example-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-calc-example-table th {
    background: #f5f5f5;
    color: #333;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #e0e0e0;
}

.pillar-calc-example-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

.pillar-calc-example-table tr:hover {
    background: rgba(220,38,38,0.03);
}

.pillar-calc-cta {
    margin-top: 24px;
    padding: 16px;
    background: rgba(34,197,94,0.05);
    border-radius: 8px;
    text-align: center;
}

.pillar-calc-cta p {
    font-size: 14px;
    color: #555;
}

.pillar-calc-cta strong {
    color: #DC2626;
}

/* ============================================
   安装构造样式
   ============================================ */
.pillar-install-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

@media (min-width: 640px) {
    .pillar-install-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-install-card {
    padding: 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 12px;
}

.pillar-install-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 8px;
    color: #DC2626;
    flex-shrink: 0;
}

.pillar-install-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    margin: 0;
}

.pillar-install-content {
    width: 100%;
    margin-top: 8px;
}

.pillar-install-content p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    margin-bottom: 8px;
}

.pillar-install-content p:last-child {
    margin-bottom: 0;
}

.pillar-install-content strong {
    color: #333;
}

.pillar-install-tips {
    padding: 24px;
}

.pillar-install-tips h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-install-tips-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 640px) {
    .pillar-install-tips-list {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .pillar-install-tips-list {
        grid-template-columns: repeat(5, 1fr);
    }
}

.pillar-install-tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px;
    background: rgba(255,255,255,0.5);
    border-radius: 6px;
}

.pillar-install-tip-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #DC2626;
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.pillar-install-tip span:last-child {
    font-size: 13px;
    color: #555;
    line-height: 1.5;
}

/* ============================================
   控制器/驱动装置样式（电动挡烟垂壁）
   ============================================ */
.pillar-controller-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .pillar-controller-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-controller-card {
    padding: 28px;
}

.pillar-controller-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.pillar-controller-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 8px;
    color: #DC2626;
}

.pillar-controller-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
}

.pillar-controller-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pillar-controller-spec {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e0e0e0;
}

.pillar-controller-spec:last-child {
    border-bottom: none;
}

.pillar-controller-label {
    font-size: 14px;
    color: #666;
}

.pillar-controller-value {
    font-size: 14px;
    color: #1a1a1a;
    font-weight: 500;
}

/* ============================================
   联动调试样式（电动挡烟垂壁）
   ============================================ */
.pillar-linkage-content {
    padding: 32px;
}

.pillar-linkage-intro {
    margin-bottom: 24px;
}

.pillar-linkage-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-linkage-steps h3,
.pillar-linkage-wiring h3,
.pillar-linkage-troubleshoot h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-linkage-steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .pillar-linkage-steps-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .pillar-linkage-steps-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.pillar-linkage-step {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-linkage-step-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #DC2626;
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.pillar-linkage-step-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.pillar-linkage-step-content p {
    font-size: 13px;
    color: #666;
}

.pillar-linkage-wiring {
    margin-bottom: 32px;
}

.pillar-linkage-wiring-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .pillar-linkage-wiring-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.pillar-linkage-wiring-item {
    padding: 16px;
    background: rgba(220,38,38,0.05);
    border-radius: 8px;
}

.pillar-linkage-wiring-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: #DC2626;
    margin-bottom: 8px;
}

.pillar-linkage-wiring-item p {
    font-size: 13px;
    color: #555;
}

.pillar-linkage-troubleshoot-table-wrap {
    overflow-x: auto;
}

.pillar-linkage-troubleshoot-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.pillar-linkage-troubleshoot-table th {
    background: #f5f5f5;
    color: #333;
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid #e0e0e0;
}

.pillar-linkage-troubleshoot-table td {
    padding: 12px 16px;
    border-bottom: 1px solid #e0e0e0;
    vertical-align: middle;
}

/* ============================================
   主备电源样式（电动挡烟垂壁）
   ============================================ */
.pillar-power-content {
    padding: 32px;
}

.pillar-power-intro {
    margin-bottom: 24px;
}

.pillar-power-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-power-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .pillar-power-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-power-card {
    padding: 24px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
    text-align: center;
}

.pillar-power-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(220,38,38,0.08);
    border-radius: 50%;
    margin: 0 auto 16px;
    color: #DC2626;
}

.pillar-power-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-power-specs p {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
}

.pillar-power-specs p:last-child {
    margin-bottom: 0;
}

.pillar-power-calc h3,
.pillar-power-check h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-power-calc-box {
    background: rgba(220,38,38,0.05);
    border: 1px solid rgba(220,38,38,0.2);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    margin-bottom: 32px;
}

.pillar-power-formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: #DC2626;
    margin-bottom: 8px;
}

.pillar-power-note {
    font-size: 13px;
    color: #666;
}

.pillar-power-check-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 640px) {
    .pillar-power-check-list {
        grid-template-columns: 1fr 1fr;
    }
}

.pillar-power-check-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255,255,255,0.5);
    border-radius: 6px;
}

.pillar-power-check-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #DC2626;
    color: #fff;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.pillar-power-check-item span:last-child {
    font-size: 13px;
    color: #555;
}

/* ============================================
   维护保养样式（电动挡烟垂壁）
   ============================================ */
.pillar-maintenance-content {
    padding: 32px;
}

.pillar-maintenance-intro {
    margin-bottom: 24px;
}

.pillar-maintenance-intro p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

.pillar-maintenance-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .pillar-maintenance-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.pillar-maintenance-card {
    padding: 24px;
    background: rgba(255,255,255,0.5);
    border-radius: 8px;
}

.pillar-maintenance-period {
    font-size: 1rem;
    font-weight: 600;
    color: #DC2626;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(220,38,38,0.2);
}

.pillar-maintenance-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pillar-maintenance-list li {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    padding: 6px 0 6px 16px;
    position: relative;
}

.pillar-maintenance-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    top: 6px;
    color: #DC2626;
    font-weight: bold;
}

.pillar-maintenance-service {
    padding: 24px;
    background: rgba(34,197,94,0.05);
    border-radius: 8px;
}

.pillar-maintenance-service h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 16px;
}

.pillar-maintenance-service-content p {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
}

.pillar-maintenance-service-content p:last-child {
    margin-bottom: 0;
}

/* ============================================
   玻璃类型选择样式（玻璃挡烟垂壁）
   ============================================ */
.pillar-glass-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 24px;
}

@media (min-width: 768px) {
    .pillar-glass-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-glass-card {
    padding: 28px;
    text-align: center;
}

.pillar-glass-thickness {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: #DC2626;
    margin-bottom: 8px;
}

.pillar-glass-type {
    font-size: 14px;
    color: #666;
    margin-bottom: 16px;
}

.pillar-glass-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.pillar-glass-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.7;
}

/* ============================================
   钢板厚度选择样式（镀锌钢板挡烟垂壁）
   ============================================ */
.pillar-steel-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 24px;
}

@media (min-width: 768px) {
    .pillar-steel-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.pillar-steel-card {
    padding: 24px;
    text-align: center;
}

.pillar-steel-thickness {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: #DC2626;
    margin-bottom: 8px;
}

.pillar-steel-type {
    font-size: 14px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.pillar-steel-desc p {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
}

/* ============================================
   动画
   ============================================ */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(220, 38, 38, 0);
    }
}