/* 内页通用样式 */

/* 页面头部 */
.page-header {
    padding: 128px 0 80px;
    background: var(--color-charcoal);
    border-bottom: 1px solid var(--color-gray-800);
}

.page-header h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.page-subtitle {
    font-size: clamp(14px, 1.8vw, 18px);
    color: var(--color-gray-300);
}

/* 页面内容区 */
.page-content {
    padding: var(--spacing-xxl) 0;
    background: url('../images/17_56_26.png') center center / cover no-repeat;
    position: relative;
}

.page-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    z-index: 0;
}

.page-content .container {
    position: relative;
    z-index: 1;
}

/* ========== 关于我们页面 ========== */
.about-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-xxl);
    text-align: center;
}

.about-intro h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.about-intro p {
    font-size: 15px;
    color: var(--color-gray-300);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.company-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}

.value-item {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    text-align: center;
    border-top: 3px solid var(--color-white);
}

.value-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.value-item p {
    font-size: 14px;
    color: var(--color-gray-300);
}

.team-section {
    margin-bottom: var(--spacing-xxl);
}

.team-section h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.team-grid-page {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.team-member {
    background: var(--color-gray-900);
    padding: var(--spacing-lg);
    text-align: center;
    border: 1px solid var(--color-gray-800);
    transition: var(--transition);
}

.team-member:hover {
    border-color: var(--color-white);
    transform: translateY(-4px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: var(--color-gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.member-avatar i {
    font-size: 36px;
    color: var(--color-dark);
}

.team-member h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.member-role {
    font-size: 13px;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-sm);
}

.member-desc {
    font-size: 12px;
    color: var(--color-gray-300);
    line-height: 1.5;
}

.partnership {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-gray-900);
}

.partnership h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.partnership > p {
    font-size: 15px;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-lg);
}

.partner-logo-large {
    display: inline-block;
    padding: var(--spacing-lg);
}

.partner-logo-large i {
    font-size: 60px;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.partner-logo-large p {
    font-size: 16px;
    color: var(--color-gray-200);
}

/* ========== 关于我们重设计 ========== */
.ab2-hero {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 24px;
    margin-bottom: 44px;
}

.ab2-hero-text h2 {
    font-size: clamp(34px, 4.4vw, 54px);
    line-height: 1.12;
    color: var(--color-white);
    margin: 10px 0 14px;
}

.ab2-hero-text p {
    color: var(--color-gray-300);
    line-height: 1.85;
    font-size: 16px;
    margin: 0 0 10px;
    max-width: 860px;
}

.ab2-hero-panel {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    padding: 20px;
    display: grid;
    gap: 12px;
    align-content: start;
}

.ab2-metric {
    padding: 14px;
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.04);
}

.ab2-metric strong {
    display: block;
    font-size: 34px;
    line-height: 1;
    color: var(--color-white);
}

.ab2-metric span {
    display: block;
    margin-top: 5px;
    font-size: 13px;
    color: var(--color-gray-300);
}

.ab2-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 44px;
}

.ab2-value-item {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    padding: 20px;
}

.ab2-value-item h3 {
    font-size: 22px;
    color: var(--color-white);
    margin: 0 0 8px;
}

.ab2-value-item p {
    margin: 0;
    color: var(--color-gray-300);
    line-height: 1.8;
}

.ab2-team {
    margin-bottom: 46px;
}

.ab2-team h2 {
    font-size: 32px;
    color: var(--color-white);
    margin: 0 0 10px;
}

.ab2-team-intro {
    max-width: 980px;
    color: var(--color-gray-300);
    line-height: 1.9;
    margin: 0 0 22px;
}

.ab2-team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.ab2-team-card {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    padding: 20px;
}

.ab2-team-card h3 {
    font-size: 19px;
    color: var(--color-white);
    margin: 0 0 8px;
}

.ab2-team-card p {
    margin: 0;
    color: var(--color-gray-300);
    line-height: 1.8;
}

.ab2-tech {
    margin-top: 18px;
    padding-top: 46px;
    border-top: 1px solid var(--color-gray-800);
}

/* ========== About v3: 图像优先、文字降级 ========== */
.ab3-overview {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 16px;
    margin-bottom: 20px;
}

.ab3-overview-text {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    padding: 18px 18px 16px;
}

.ab3-overview-text h2 {
    margin: 8px 0 10px;
    color: var(--color-white);
    font-size: clamp(24px, 3.2vw, 36px);
    line-height: 1.2;
}

.ab3-overview-text p {
    margin: 0;
    color: var(--color-gray-300);
    font-size: 14px;
    line-height: 1.8;
}

.ab3-overview-photo {
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    overflow: hidden;
    min-height: 240px;
    background: var(--color-gray-900);
}

.ab3-overview-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ab3-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.ab3-shot {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    overflow: hidden;
}

.ab3-shot img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    display: block;
}

.ab3-shot p {
    margin: 0;
    padding: 10px 12px;
    font-size: 13px;
    color: var(--color-gray-300);
}

.ab3-team {
    margin-bottom: 24px;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    padding: 18px;
}

.ab3-team h2 {
    margin: 0 0 8px;
    font-size: 28px;
    color: var(--color-white);
}

.ab3-team p {
    margin: 0 0 12px;
    color: var(--color-gray-300);
    font-size: 14px;
    line-height: 1.8;
}

.ab3-schools {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ab3-schools span {
    padding: 7px 10px;
    border-radius: 999px;
    border: 1px solid var(--color-gray-800);
    color: var(--color-gray-200);
    background: rgba(0, 0, 0, 0.04);
    font-size: 12px;
}

.ab3-tech h2 {
    margin: 0 0 12px;
    font-size: 28px;
    color: var(--color-white);
}

.ab3-tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.ab3-tech-card {
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    border-radius: 10px;
    overflow: hidden;
}

.ab3-tech-photo img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

.ab3-tech-card h3 {
    margin: 10px 12px 6px;
    color: var(--color-white);
    font-size: 18px;
    line-height: 1.35;
}

.ab3-tech-card p {
    margin: 0 12px 12px;
    color: var(--color-gray-300);
    font-size: 14px;
    line-height: 1.75;
}

/* ========== 产品页面 ========== */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.image-placeholder {
    aspect-ratio: 1;
    background: var(--color-gray-900);
    border: 1px solid var(--color-gray-800);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-700);
}

.image-placeholder i {
    font-size: 100px;
    margin-bottom: var(--spacing-md);
}

.image-placeholder p {
    font-size: 16px;
    margin-bottom: var(--spacing-xs);
}

.image-placeholder small {
    font-size: 13px;
    color: var(--color-gray-800);
}

/* 产品图片展示容器 */
.product-images-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.product-image-main {
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-dark);
    border: 1px solid var(--color-gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 4px;
}

.product-image-main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.3s ease;
}

.product-image-thumbnails {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.product-image-thumbnails .thumbnail {
    width: 80px;
    height: 80px;
    object-fit: contain;
    background: var(--color-gray-900);
    border: 2px solid var(--color-gray-800);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    padding: 4px;
}

.product-image-thumbnails .thumbnail:hover {
    border-color: var(--color-gray-500);
    transform: translateY(-2px);
}

.product-image-thumbnails .thumbnail.active {
    border-color: var(--color-white);
    background: var(--color-gray-800);
}

.product-detail-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.product-detail-info > p {
    font-size: 16px;
    color: var(--color-gray-300);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.product-specs,
.product-features-detail {
    margin-bottom: var(--spacing-lg);
}

.product-specs h3,
.product-features-detail h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.product-specs ul {
    list-style: none;
}

.product-specs ul li {
    padding: 12px 0;
    color: var(--color-gray-300);
    font-size: 15px;
    border-bottom: 1px solid var(--color-gray-800);
}

.product-specs ul li strong {
    color: var(--color-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.feature-box {
    background: var(--color-gray-900);
    padding: var(--spacing-md);
    border-left: 2px solid var(--color-white);
}

.feature-box i {
    font-size: 24px;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.feature-box h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.feature-box p {
    font-size: 13px;
    color: var(--color-gray-300);
}

/* ========== 技术板块（合并到关于我们） ========== */
.tech-section {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xxl);
    border-top: 1px solid var(--color-gray-800);
}

.tech-section h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.tech-detail-list {
    max-width: 900px;
    margin: 0 auto;
}

.tech-detail-item {
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    border-bottom: 1px solid var(--color-gray-800);
}

.tech-detail-item:last-child {
    border-bottom: none;
}

.tech-detail-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.tech-label {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-gray-800);
    font-family: var(--font-heading);
}

.tech-detail-item h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-white);
}

.tech-detail-item p {
    font-size: 16px;
    color: var(--color-gray-300);
    line-height: 1.8;
}

/* ========== 联系页面 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.contact-info-section h2,
.contact-form-section h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
}

.contact-detail {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-800);
}

.contact-detail:last-child {
    border-bottom: none;
}

.contact-detail h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-detail p {
    font-size: 15px;
    color: var(--color-gray-200);
    margin: 4px 0;
}

.contact-detail .secondary {
    font-size: 14px;
    color: var(--color-gray-300);
}

.contact-form {
    background: var(--color-gray-900);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-gray-800);
}

.form-field {
    margin-bottom: var(--spacing-md);
}

.form-field input,
.form-field select,
.form-field textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-charcoal);
    border: 1px solid var(--color-gray-800);
    color: var(--color-white);
    font-size: 15px;
    font-family: var(--font-primary);
    transition: var(--transition);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--color-white);
}

.form-field textarea {
    resize: vertical;
}

.btn-block {
    width: 100%;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .product-detail-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .company-values,
    .team-grid-page {
        grid-template-columns: 1fr;
    }

    .ab2-hero,
    .ab2-values,
    .ab2-team-grid,
    .ab3-overview,
    .ab3-tech-grid {
        grid-template-columns: 1fr;
    }
    
    .product-image-thumbnails {
        flex-wrap: wrap;
    }
    
    .product-image-thumbnails .thumbnail {
        width: 70px;
        height: 70px;
    }
}

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

    .product-image-thumbnails .thumbnail {
        width: 60px;
        height: 60px;
    }

    .ab2-hero-text h2 {
        font-size: clamp(28px, 8.5vw, 40px);
    }

    .ab3-gallery {
        grid-template-columns: 1fr 1fr;
    }
}

/* 新闻详情页 */
.news-article {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0 80px;
}

.news-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary, #2563eb);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 32px;
    transition: opacity 0.2s;
}

.news-back-link:hover { opacity: 0.7; }

.news-article-header { margin-bottom: 28px; }

.news-article-date {
    font-size: 14px;
    color: rgba(0,0,0,0.6);
    display: block;
    margin-bottom: 12px;
}

.news-article-title {
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    color: #000;
}

.news-article-image-placeholder {
    width: 100%;
    height: 320px;
    background: #f0f0f0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #ccc;
    margin-bottom: 36px;
}

.news-article-body {
    font-size: 17px;
    line-height: 1.9;
    color: rgba(0,0,0,0.85);
}

.news-article-body p { margin-bottom: 20px; }

/* 新闻列表条目可点击 */
.news-item.clickable {
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
}

.news-item.clickable:hover {
    background: rgba(0,0,0,0.05);
    box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

/* ========== 渡源新版专属样式 ========== */
body.duyuan-page {
    background: #f5f3ee;
    color: #0f0f0d;
}

.duyuan-modern {
    --ink: #0f0f0d;
    --ink-60: rgba(15, 15, 13, 0.6);
    --ink-20: rgba(15, 15, 13, 0.12);
    --paper: #f5f3ee;
    --paper-warm: #ede9e0;
    --accent: #1a4a3a;
    --accent-light: #2d7a5f;
    --gold-light: #d4aa72;
    --rule: rgba(15, 15, 13, 0.1);
    font-family: "Noto Serif SC", serif;
    color: var(--ink);
}

.duyuan-modern em {
    font-style: italic;
    font-family: "Instrument Serif", serif;
}

.dy-container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 2rem;
}

.duyuan-modern .dy-section {
    padding: 6.5rem 0;
}

.duyuan-modern .dy-alt {
    background: var(--paper-warm);
}

.duyuan-modern .dy-deep {
    background: var(--accent);
    color: #fff;
}

.duyuan-modern .dy-label {
    display: inline-block;
    margin-bottom: 1.25rem;
    letter-spacing: 0.16em;
    font-size: 0.72rem;
    font-family: "DM Mono", monospace;
    color: var(--ink-60);
}

.duyuan-modern .dy-header {
    max-width: 740px;
    margin-bottom: 3.4rem;
}

.duyuan-modern .dy-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.duyuan-modern .dy-header p {
    color: var(--ink-60);
    line-height: 1.9;
    font-size: 0.95rem;
}

.duyuan-modern .dy-hero {
    min-height: 100vh;
    padding-top: 72px;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.duyuan-modern .dy-hero-left {
    padding: 6rem 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.duyuan-modern .dy-eyebrow {
    font-size: 0.72rem;
    color: var(--accent-light);
    letter-spacing: 0.18em;
    font-family: "DM Mono", monospace;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.8rem;
}

.duyuan-modern .dy-eyebrow::before {
    content: "";
    width: 32px;
    height: 1px;
    background: var(--accent-light);
}

.duyuan-modern .dy-hero-left h1 {
    font-size: clamp(3rem, 5.2vw, 5.4rem);
    line-height: 1.08;
    font-weight: 300;
    margin: 0;
}

.duyuan-modern .dy-hero-left p {
    max-width: 520px;
    margin: 1.8rem 0 2.6rem;
    color: var(--ink-60);
    line-height: 1.85;
}

.duyuan-modern .dy-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.duyuan-modern .dy-btn-primary,
.duyuan-modern .dy-btn-light {
    padding: 0.9rem 2.2rem;
    border-radius: 2px;
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: all 0.25s ease;
}

.duyuan-modern .dy-btn-primary {
    background: var(--accent);
    color: #fff;
}

.duyuan-modern .dy-btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
}

.duyuan-modern .dy-btn-secondary {
    text-decoration: none;
    color: var(--ink-60);
    font-family: "DM Mono", monospace;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
}

.duyuan-modern .dy-btn-secondary::after {
    content: " →";
}

.duyuan-modern .dy-hero-right {
    background: var(--accent);
    color: #fff;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.duyuan-modern .dy-tooth-wrap {
    position: relative;
    width: 100%;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.duyuan-modern .dy-tooth-glow {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 122, 95, 0.4) 0%, transparent 72%);
    animation: dyPulse 4s ease-in-out infinite;
}

.duyuan-modern .dy-tooth-svg {
    position: relative;
    z-index: 2;
}

.duyuan-modern .dy-scan-line {
    position: absolute;
    left: calc(50% - 80px);
    right: calc(50% - 80px);
    height: 1px;
    background: rgba(45, 122, 95, 0.75);
    box-shadow: 0 0 8px rgba(45, 122, 95, 0.6);
    animation: dyScan 3s ease-in-out infinite;
}

.duyuan-modern .dy-data {
    position: absolute;
    inset: 0;
    font-family: "DM Mono", monospace;
    font-size: 0.66rem;
    color: rgba(184, 255, 220, 0.5);
    z-index: 1;
}

.duyuan-modern .dy-data span {
    position: absolute;
}

.duyuan-modern .dy-data span:nth-child(1) { top: 23%; right: 12%; }
.duyuan-modern .dy-data span:nth-child(2) { top: 42%; left: 8%; }
.duyuan-modern .dy-data span:nth-child(3) { bottom: 29%; right: 12%; }
.duyuan-modern .dy-data span:nth-child(4) { bottom: 14%; left: 13%; }

.duyuan-modern .dy-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
}

.duyuan-modern .dy-stats div {
    padding: 1.2rem 1.4rem;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.duyuan-modern .dy-stats div:last-child {
    border-right: none;
}

.duyuan-modern .dy-stats strong {
    display: block;
    font-size: 1.9rem;
    color: var(--gold-light);
    font-weight: 400;
    line-height: 1.15;
    font-family: "Instrument Serif", serif;
}

.duyuan-modern .dy-stats span {
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.6);
    font-family: "DM Mono", monospace;
}

.duyuan-modern .dy-model-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--ink-20);
    border: 1px solid var(--ink-20);
}

.duyuan-modern .dy-model {
    background: var(--paper);
    padding: 2.6rem 2.2rem;
}

.duyuan-modern .dy-model-accent {
    background: var(--accent);
    color: #fff;
}

.duyuan-modern .dy-model .dy-num {
    display: block;
    margin-bottom: 1.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--ink-60);
    font-family: "DM Mono", monospace;
}

.duyuan-modern .dy-model-accent .dy-num {
    color: rgba(255, 255, 255, 0.7);
}

.duyuan-modern .dy-model h3 {
    font-size: 1.3rem;
    margin-bottom: 0.9rem;
    line-height: 1.35;
    font-weight: 600;
}

.duyuan-modern .dy-model p {
    font-size: 0.9rem;
    line-height: 1.85;
    color: var(--ink-60);
}

.duyuan-modern .dy-model-accent p {
    color: rgba(255, 255, 255, 0.72);
}

.duyuan-modern .dy-workflow {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.duyuan-modern .dy-workflow h2,
.duyuan-modern .dy-trust h2 {
    font-size: clamp(1.9rem, 3.2vw, 2.8rem);
    line-height: 1.25;
    font-weight: 300;
    margin-bottom: 1.4rem;
}

.duyuan-modern .dy-steps {
    margin-top: 1rem;
}

.duyuan-modern .dy-step {
    display: grid;
    grid-template-columns: 58px 1fr;
    gap: 1.1rem;
    padding: 1.2rem 0;
    border-top: 1px solid var(--rule);
}

.duyuan-modern .dy-step:last-child {
    border-bottom: 1px solid var(--rule);
}

.duyuan-modern .dy-step > span {
    font-size: 2rem;
    line-height: 1;
    color: var(--accent-light);
    font-family: "Instrument Serif", serif;
}

.duyuan-modern .dy-step h3 {
    font-size: 1rem;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.duyuan-modern .dy-step p {
    font-size: 0.9rem;
    color: var(--ink-60);
    line-height: 1.8;
}

.duyuan-modern .dy-terminal {
    background: #131313;
    color: rgba(255, 255, 255, 0.78);
    border-radius: 3px;
    padding: 2rem 1.6rem;
    font-family: "DM Mono", monospace;
    font-size: 0.75rem;
    line-height: 2;
    align-self: start;
    position: sticky;
    top: 6rem;
}

.duyuan-modern .dy-terminal .dim { color: rgba(255, 255, 255, 0.35); }
.duyuan-modern .dy-terminal .green { color: #5fbd8a; }
.duyuan-modern .dy-terminal .gold { color: var(--gold-light); }

.duyuan-modern .dy-terminal .cursor {
    display: inline-block;
    width: 7px;
    height: 13px;
    background: var(--accent-light);
    vertical-align: text-bottom;
    animation: dyBlink 1.2s step-end infinite;
}

.duyuan-modern .dy-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.2rem 4rem;
}

.duyuan-modern .dy-feature {
    position: relative;
    padding-left: 1.2rem;
}

.duyuan-modern .dy-feature::before {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    width: 3px;
    height: calc(100% - 5px);
    background: var(--ink-20);
}

.duyuan-modern .dy-feature h3 {
    font-size: 1.05rem;
    margin-bottom: 0.55rem;
    font-weight: 600;
}

.duyuan-modern .dy-feature p {
    color: var(--ink-60);
    line-height: 1.8;
    font-size: 0.9rem;
}

.duyuan-modern .dy-algo-layout {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.2rem;
    align-items: start;
}

.duyuan-modern .dy-algo-stack {
    margin-top: 1.4rem;
    display: grid;
    gap: 0.9rem;
}

.duyuan-modern .dy-algo-item {
    border: 1px solid var(--ink-20);
    background: var(--paper);
    padding: 1rem 1.1rem;
}

.duyuan-modern .dy-algo-item h3 {
    font-size: 0.98rem;
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.duyuan-modern .dy-algo-item p {
    font-size: 0.88rem;
    color: var(--ink-60);
    line-height: 1.75;
}

.duyuan-modern .dy-algo-panel {
    background: #111312;
    border-radius: 3px;
    padding: 1.5rem 1.3rem;
    color: rgba(255, 255, 255, 0.86);
}

.duyuan-modern .dy-algo-panel h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    font-family: "DM Mono", monospace;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.74);
}

.duyuan-modern .dy-flow-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.8rem;
}

.duyuan-modern .dy-flow-list li {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 0.7rem;
    align-items: start;
    border-top: 1px solid rgba(255, 255, 255, 0.09);
    padding-top: 0.8rem;
}

.duyuan-modern .dy-flow-list li:first-child {
    border-top: none;
    padding-top: 0;
}

.duyuan-modern .dy-flow-list span {
    font-family: "Instrument Serif", serif;
    font-size: 1.5rem;
    color: var(--gold-light);
    line-height: 1;
}

.duyuan-modern .dy-flow-list p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.75;
    font-size: 0.88rem;
}

.duyuan-modern .dy-module-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    border: 1px solid var(--ink-20);
    background: var(--ink-20);
}

.duyuan-modern .dy-module {
    background: var(--paper);
    padding: 1.7rem 1.5rem;
}

.duyuan-modern .dy-module h3 {
    font-size: 1.05rem;
    margin-bottom: 0.55rem;
    font-weight: 600;
}

.duyuan-modern .dy-module p {
    font-size: 0.9rem;
    color: var(--ink-60);
    line-height: 1.8;
}

.duyuan-modern .dy-deep .dy-label {
    color: rgba(255, 255, 255, 0.6);
}

.duyuan-modern .dy-deep .dy-header h2 {
    color: #fff;
}

.duyuan-modern .dy-deep .dy-header h2 em {
    color: var(--gold-light);
}

.duyuan-modern .dy-scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.duyuan-modern .dy-scenario {
    background: var(--accent);
    padding: 2rem 1.6rem;
}

.duyuan-modern .dy-scenario h3 {
    font-size: 1.05rem;
    margin-bottom: 0.65rem;
    color: #fff;
}

.duyuan-modern .dy-scenario p {
    font-size: 0.88rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.65);
}

.duyuan-modern .dy-trust {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4.5rem;
    align-items: center;
}

.duyuan-modern .dy-trust-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.duyuan-modern .dy-trust-stats strong {
    display: block;
    font-size: clamp(2.4rem, 4vw, 3.4rem);
    line-height: 1;
    color: var(--accent);
    font-family: "Instrument Serif", serif;
}

.duyuan-modern .dy-trust-stats span {
    color: var(--ink-60);
    font-size: 0.88rem;
}

.duyuan-modern .dy-muted {
    color: var(--ink-60);
    line-height: 1.9;
    max-width: 500px;
}

.duyuan-modern .dy-certs {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.duyuan-modern .dy-certs span {
    border: 1px solid var(--ink-20);
    padding: 0.45rem 0.9rem;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    color: var(--ink-60);
    font-family: "DM Mono", monospace;
}

.duyuan-modern .dy-cta {
    background: #10100f;
    color: #fff;
    text-align: center;
    padding: 7rem 0;
}

.duyuan-modern .dy-cta .dy-label {
    color: rgba(255, 255, 255, 0.45);
}

.duyuan-modern .dy-cta h2 {
    font-size: clamp(2rem, 4vw, 3.8rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.duyuan-modern .dy-cta h2 em {
    color: var(--gold-light);
}

.duyuan-modern .dy-cta p {
    color: rgba(255, 255, 255, 0.6);
    max-width: 580px;
    margin: 0 auto 2.2rem;
    line-height: 1.85;
}

.duyuan-modern .dy-btn-light {
    background: #fff;
    color: #0f0f0d;
}

.duyuan-modern .dy-btn-light:hover {
    background: var(--gold-light);
}

.duyuan-modern .dy-btn-ghost {
    padding: 0.9rem 2.2rem;
    border-radius: 2px;
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: rgba(255, 255, 255, 0.76);
    font-family: "DM Mono", monospace;
    letter-spacing: 0.06em;
}

.duyuan-modern .dy-fade {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.duyuan-modern .dy-fade.dy-visible {
    opacity: 1;
    transform: none;
}

@keyframes dyPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.08); }
}

@keyframes dyScan {
    0% { top: 18%; opacity: 0; }
    12% { opacity: 1; }
    88% { opacity: 1; }
    100% { top: 82%; opacity: 0; }
}

@keyframes dyBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@media (max-width: 980px) {
    .dy-container {
        padding: 0 1.3rem;
    }

    .duyuan-modern .dy-hero {
        grid-template-columns: 1fr;
    }

    .duyuan-modern .dy-hero-left {
        padding: 5rem 1.3rem 3rem;
    }

    .duyuan-modern .dy-hero-right {
        min-height: 460px;
    }

    .duyuan-modern .dy-model-grid,
    .duyuan-modern .dy-scenario-grid,
    .duyuan-modern .dy-workflow,
    .duyuan-modern .dy-trust,
    .duyuan-modern .dy-algo-layout {
        grid-template-columns: 1fr;
    }

    .duyuan-modern .dy-terminal {
        position: static;
    }
}

@media (max-width: 700px) {
    .duyuan-modern .dy-section {
        padding: 4.5rem 0;
    }

    .duyuan-modern .dy-feature-grid,
    .duyuan-modern .dy-trust-stats,
    .duyuan-modern .dy-stats,
    .duyuan-modern .dy-module-grid {
        grid-template-columns: 1fr;
    }

    .duyuan-modern .dy-stats div {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .duyuan-modern .dy-stats div:last-child {
        border-bottom: none;
    }
}

/* ========== 渡源页重设计（对齐首页风格） ========== */
body.duyuan-page {
    background: #f5f5f5;
    color: #0a0a0a;
}

.duyuan-home {
    padding-top: 72px;
    background: #f5f5f5;
}

.duh-hero {
    padding: 64px 0 46px;
    background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.duh-hero-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 24px;
    align-items: stretch;
}

.duh-kicker {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.8px;
    color: #303030;
    background: rgba(0, 0, 0, 0.05);
    margin-bottom: 16px;
}

.duh-hero-left h1 {
    font-size: clamp(34px, 4.8vw, 58px);
    line-height: 1.12;
    font-weight: 700;
    margin: 0 0 14px;
    color: #000;
}

.duh-hero-left h1 span {
    color: #3a3a3a;
}

.duh-hero-left p {
    font-size: 17px;
    line-height: 1.8;
    color: #444;
    margin: 0;
    max-width: 840px;
}

.duh-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

.duh-hero-right {
    display: flex;
}

.duh-stat-card {
    width: 100%;
    background: #ffffff;
    border: 1px solid #d8d8d8;
    border-radius: 10px;
    padding: 20px;
}

.duh-stat-card h3 {
    margin: 0 0 14px;
    font-size: 15px;
    color: #4b4b4b;
    letter-spacing: 0.5px;
}

.duh-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.duh-stats strong {
    display: block;
    font-size: 30px;
    line-height: 1;
    color: #000;
}

.duh-stats span {
    display: block;
    margin-top: 5px;
    font-size: 13px;
    color: #5a5a5a;
}

.duh-section {
    padding: 62px 0;
}

.duh-alt {
    background: #efefef;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.duh-header {
    margin-bottom: 28px;
}

.duh-header .section-label {
    font-size: 12px;
    color: #666;
    letter-spacing: 1.1px;
}

.duh-header h2 {
    margin: 10px 0 0;
    font-size: clamp(28px, 3.6vw, 44px);
    line-height: 1.2;
    color: #0a0a0a;
}

.duh-header p {
    margin: 12px 0 0;
    max-width: 860px;
    color: #505050;
    line-height: 1.8;
}

.duh-cap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.duh-card {
    background: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 10px;
    padding: 22px 20px;
}

.duh-card h3 {
    margin: 0 0 8px;
    font-size: 22px;
    color: #111;
}

.duh-card p {
    margin: 0;
    font-size: 15px;
    line-height: 1.8;
    color: #4a4a4a;
}

.duh-arch-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 18px;
}

.duh-pipeline {
    background: #ffffff;
    border: 1px solid #d7d7d7;
    border-radius: 10px;
    padding: 8px 20px;
}

.duh-step {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 10px;
    padding: 16px 0;
    border-top: 1px solid #e2e2e2;
}

.duh-step:first-child {
    border-top: none;
}

.duh-step span {
    font-size: 30px;
    font-weight: 600;
    color: #a0a0a0;
    line-height: 1;
}

.duh-step h3 {
    margin: 0 0 4px;
    font-size: 19px;
    color: #111;
}

.duh-step p {
    margin: 0;
    color: #4d4d4d;
    line-height: 1.75;
}

.duh-note {
    background: #111;
    color: #f3f3f3;
    border-radius: 10px;
    padding: 22px;
}

.duh-note h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.duh-note ul {
    margin: 0;
    padding-left: 18px;
}

.duh-note li {
    margin: 8px 0;
    color: #d6d6d6;
    line-height: 1.7;
}

.duh-mod-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.duh-mod {
    background: #fff;
    border: 1px solid #d8d8d8;
    border-radius: 10px;
    padding: 20px;
}

.duh-mod h3 {
    margin: 0 0 7px;
    font-size: 20px;
    color: #101010;
}

.duh-mod p {
    margin: 0;
    line-height: 1.8;
    color: #4f4f4f;
}

.duh-safe-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.duh-safe-card {
    background: #fff;
    border: 1px solid #d8d8d8;
    border-radius: 10px;
    padding: 20px;
}

.duh-safe-card h3 {
    margin: 0 0 8px;
    font-size: 20px;
}

.duh-safe-card p {
    margin: 0;
    color: #505050;
    line-height: 1.75;
}

.duh-cta {
    padding: 66px 0 76px;
    background: #0f0f0f;
    color: #f6f6f6;
    text-align: center;
}

.duh-cta h2 {
    margin: 0 0 10px;
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.2;
}

.duh-cta p {
    margin: 0 auto;
    max-width: 760px;
    color: #d0d0d0;
    line-height: 1.8;
}

.duh-cta .duh-actions {
    justify-content: center;
}

@media (max-width: 1100px) {
    .duh-hero-grid,
    .duh-arch-grid {
        grid-template-columns: 1fr;
    }

    .duh-mod-grid,
    .duh-safe-grid,
    .duh-cap-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 760px) {
    .duh-hero {
        padding: 42px 0 32px;
    }

    .duh-hero-left p {
        font-size: 15px;
    }

    .duh-section {
        padding: 46px 0;
    }

    .duh-mod-grid,
    .duh-safe-grid,
    .duh-cap-grid {
        grid-template-columns: 1fr;
    }
}