*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #1a365d;
    --color-primary-light: #2c5282;
    --color-primary-dark: #0f2744;
    --color-accent: #4fd1c5;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-text-muted: #a0aec0;
    --color-bg: #ffffff;
    --color-bg-alt: #f7fafc;
    --color-border: #e2e8f0;
    --color-success: #48bb78;
    --color-warning: #ed8936;
    --color-error: #f56565;
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 15px 40px rgba(26, 54, 93, 0.15);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
}

p {
    margin-bottom: 1em;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    outline: none;
    line-height: 1.4;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 54, 93, 0.25);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: #fff;
}

.page-section {
    padding: 80px 0;
}

.alt-bg {
    background-color: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-title {
    font-size: 34px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 16px;
    color: var(--color-text-light);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.7;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.header.scroll {
    box-shadow: var(--shadow-sm);
    background-color: rgba(255, 255, 255, 0.98);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-primary);
    flex-shrink: 0;
}

.logo-icon {
    font-size: 28px;
    margin-right: 10px;
}

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-link {
    position: relative;
    display: block;
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
    border-radius: var(--border-radius-sm);
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: rgba(26, 54, 93, 0.05);
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    border-radius: 2px;
    background-color: var(--color-primary);
}

/* ===== 导航二级下拉（产品服务专题） ===== */
.nav-caret {
    font-size: 10px;
    margin-left: 4px;
    opacity: 0.7;
    transition: transform var(--transition-fast);
}

.has-dropdown {
    position: relative;
}

.has-dropdown:hover > .nav-link {
    color: var(--color-primary);
    background-color: rgba(26, 54, 93, 0.05);
}

.has-dropdown:hover > .nav-link .nav-caret {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    margin: 0;
    padding: 8px 0;
    list-style: none;
    background: #fff;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: 1100;
}

.has-dropdown:hover > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: var(--color-text);
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.dropdown-link:hover,
.dropdown-link.active {
    color: var(--color-primary);
    background-color: rgba(26, 54, 93, 0.05);
    font-weight: 600;
}

/* 移动端二级手风琴 */
.mobile-has-dropdown > .mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.mobile-has-dropdown > .mobile-nav-link .nav-caret {
    transition: transform var(--transition-fast);
}

.mobile-has-dropdown.open > .mobile-nav-link .nav-caret {
    transform: rotate(180deg);
}

.mobile-dropdown {
    list-style: none;
    margin: 0;
    padding: 0 0 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.mobile-has-dropdown.open > .mobile-dropdown {
    max-height: 320px;
}

.mobile-dropdown .mobile-nav-link {
    font-size: 14px;
    padding: 12px 16px;
    color: var(--color-text-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.hotline {
    display: flex;
    align-items: center;
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    background-color: rgba(26, 54, 93, 0.08);
    border-radius: 24px;
    transition: all var(--transition-fast);
}

.hotline:hover {
    background-color: rgba(26, 54, 93, 0.12);
    transform: translateY(-1px);
}

.hotline i {
    margin-right: 6px;
    font-size: 13px;
}

.mobile-menu-btn {
    display: none;
    padding: 10px;
    font-size: 20px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: rgba(26, 54, 93, 0.08);
    color: var(--color-primary);
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

.mobile-nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mobile-nav-overlay.open {
    display: block;
    opacity: 1;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: #fff;
    z-index: 999;
    transition: right var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.mobile-nav.open {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav-header .logo-text {
    font-size: 18px;
}

.mobile-nav-close {
    padding: 8px;
    font-size: 18px;
    color: var(--color-text-light);
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.mobile-nav-close:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-primary);
}

.mobile-nav-list {
    padding: 16px;
    list-style: none;
}

.mobile-nav-link {
    display: block;
    padding: 14px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    margin-bottom: 4px;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    color: var(--color-primary);
    background-color: rgba(26, 54, 93, 0.06);
    font-weight: 600;
}

.mobile-nav-hotline {
    margin: 16px;
    padding: 16px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--border-radius-md);
    color: #fff;
    text-align: center;
}

.mobile-nav-hotline a {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
    touch-action: pan-y; /* 允许垂直滚动，禁止水平默认行为 */
    user-select: none;
    -webkit-user-select: none;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    background-color: var(--color-primary);
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 220px 24px 0;
}

.hero-title {
    font-size: 52px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 24px;
    line-height: 1.2;
    letter-spacing: -1px;
    animation: heroFadeUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    max-width: 560px;
    line-height: 1.7;
    animation: heroFadeUp 0.8s ease-out 0.15s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: heroFadeUp 0.8s ease-out 0.3s both;
}

.hero-actions .btn {
    margin-right: 0;
    padding: 14px 34px;
    font-size: 15px;
}

.hero-actions .btn-secondary {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.8);
}

.hero-actions .btn-secondary:hover {
    background-color: #fff;
    color: var(--color-primary);
}

@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    padding: 0;
}

.hero-dot.active {
    background-color: #fff;
    width: 32px;
    border-radius: 5px;
}

.hero-prev,
.hero-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
    transition: all var(--transition-normal);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.hero-prev:hover,
.hero-next:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-50%) scale(1.05);
}

.hero-prev {
    left: 32px;
}

.hero-next {
    right: 32px;
}

.trust-bar {
    padding: 60px 0;
    background-color: var(--color-bg-alt);
}

.trust-bar-inner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 40px;
    justify-items: center;
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.trust-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--color-primary);
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.1), rgba(79, 209, 197, 0.15));
    border-radius: 14px;
    margin-bottom: 16px;
}

.trust-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
    line-height: 1;
    letter-spacing: -0.5px;
}

.trust-label {
    font-size: 14px;
    color: var(--color-text-light);
    font-weight: 500;
}

.core-offerings {
    padding: 96px 0;
}

.offerings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.offering-card {
    padding: 40px 32px;
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.offering-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.offering-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

.offering-card:hover::before {
    transform: scaleX(1);
}

.offering-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-primary);
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.08), rgba(79, 209, 197, 0.12));
    border-radius: 16px;
    margin-bottom: 24px;
    transition: all var(--transition-normal);
}

.offering-card:hover .offering-icon {
    transform: scale(1.08);
}

.offering-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 14px;
    letter-spacing: -0.2px;
}

.offering-desc {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 24px;
    line-height: 1.8;
}

.offering-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.offering-link:hover {
    gap: 10px;
    color: var(--color-primary-light);
}

.cta-section {
    padding: 96px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 209, 197, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    position: relative;
}

.cta-content {
    flex: 1;
    max-width: 500px;
}

.cta-title {
    font-size: 36px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.25;
    letter-spacing: -0.5px;
}

.cta-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.cta-form {
    flex: 1;
    max-width: 480px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 28px;
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.cta-form .form-group {
    min-width: auto;
}

.cta-form .form-group:nth-child(5) {
    grid-column: 1 / -1;
}

.cta-form .form-group input,
.cta-form .form-group select {
    width: 100%;
    padding: 13px 18px;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-sm);
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--color-text);
    outline: none;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.cta-form .form-group input:focus,
.cta-form .form-group select:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(79, 209, 197, 0.2);
}

.cta-form .form-group input::placeholder {
    color: var(--color-text-muted);
}

.cta-btn {
    grid-column: 1 / -1;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--color-accent), #38b2ac);
    color: var(--color-primary-dark);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 209, 197, 0.3);
}

.social-proof {
    padding: 96px 0;
    background-color: var(--color-bg-alt);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    margin-bottom: 56px;
}

.case-card {
    background-color: #fff;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.case-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

/* 无缩略图的案例卡片：content 区域占满卡片 */
.case-card.no-thumbnail .case-content {
    padding-top: 36px;
    border-top: 3px solid var(--color-primary);
}

.case-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.case-content {
    padding: 28px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
    line-height: 1.4;
    letter-spacing: -0.2px;
}

.case-desc {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 18px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    overflow: hidden;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-primary);
    background-color: rgba(26, 54, 93, 0.08);
    border-radius: 20px;
}

.partners-section {
    text-align: center;
}

.partners-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 40px;
}

.partners-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.partner-logo {
    width: 120px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-text-muted);
    background-color: #fff;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    filter: grayscale(100%);
    opacity: 0.6;
}

.partner-logo:hover {
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    filter: grayscale(0%);
    opacity: 1;
    transform: translateY(-2px);
}

.news-section {
    padding: 96px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.news-card {
    background-color: #fff;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

/* 无缩略图的新闻卡片 */
.news-card.no-image {
    min-height: auto;
}
.news-card.no-image .news-content {
    padding: 24px;
}
.news-card.no-image:hover {
    transform: translateY(-3px);
}

.news-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.news-content {
    padding: 24px;
}

.news-date {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 10px;
    font-weight: 500;
}

.news-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 12px;
    line-height: 1.5;
    letter-spacing: -0.2px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    overflow: hidden;
    word-break: break-word;
}

.news-desc {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 18px;
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    overflow: hidden;
}

/* 新闻分类筛选 */
.news-categories-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
    justify-content: center;
}

.cat-filter-btn {
    padding: 8px 20px;
    border: 2px solid var(--color-border);
    border-radius: 24px;
    background: #fff;
    color: var(--color-text);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.cat-filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.cat-filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* 新闻元信息 */
.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.news-category {
    display: inline-block;
    padding: 2px 10px;
    background: #e8f0fe;
    color: #1a73e8;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

/* 新闻标签 */
.news-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}

.news-tag {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    border-radius: 10px;
    font-size: 11px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    transition: gap var(--transition-fast);
}

.news-link:hover {
    gap: 10px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.news-link:hover {
    gap: 10px;
    color: var(--color-primary-light);
}

.news-more {
    text-align: center;
    margin-top: 48px;
}

/* 新闻详情页富文本内容自适应 */
.news-body {
    font-size: 15px;
    line-height: 1.9;
    color: var(--color-text);
    word-break: break-word;
    overflow-wrap: break-word;
}
.news-body img {
    max-width: 100%;
    height: auto;
}
.news-body table {
    max-width: 100%;
    display: block;
    overflow-x: auto;
    border-collapse: collapse;
}
.news-body table td,
.news-body table th {
    border: 1px solid #ddd;
    padding: 8px 12px;
}
.news-body pre {
    max-width: 100%;
    overflow-x: auto;
    background: #f5f5f5;
    padding: 16px;
    border-radius: 6px;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
}

.footer {
    padding: 72px 0 28px;
    background-color: var(--color-primary-dark);
    color: #fff;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary-light), var(--color-accent));
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    color: var(--color-accent);
}

.footer-logo .logo-text {
    color: #fff;
    font-size: 20px;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    color: #fff;
    background-color: var(--color-accent);
    transform: translateY(-2px);
}

.footer-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 24px;
    color: #fff;
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.footer-contact i {
    width: 20px;
    margin-right: 10px;
    color: var(--color-accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-hours {
    list-style: none;
}

.footer-hours li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    flex-wrap: wrap;
    gap: 16px;
}

.copyright {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.copyright a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-links-bottom {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links-bottom a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links-bottom a:hover {
    color: var(--color-accent);
}

@media (max-width: 1200px) {
    .footer-inner {
        grid-template-columns: 1.5fr 1fr 1fr;
    }
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }

    .section-title {
        font-size: 30px;
    }

    .cta-inner {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .cta-content {
        max-width: 100%;
    }

    .cta-form {
        max-width: 100%;
        width: 100%;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .main-nav {
        display: none;
    }
    
    .hotline {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-nav-overlay.open {
        display: block;
    }
    
    .mobile-nav {
        display: block;
    }

    .header-inner {
        height: 64px;
    }
    
    .hero {
        min-height: 400px;
        max-height: none;
        height: 50vh;
        padding: 80px 0 60px;
    }

    .hero-slider {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .hero-slide {
        background-size: contain;
        background-position: center center;
    }
    
    .hero-content {
        padding-top: 60px;
        padding-bottom: 20px;
        position: relative;
        z-index: 1;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }
    
    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        margin-right: 0;
    }

    .hero-prev,
    .hero-next {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .hero-prev {
        left: 16px;
    }

    .hero-next {
        right: 16px;
    }

    .hero-dots {
        bottom: 24px;
    }

    .section-title {
        font-size: 26px;
    }

    .section-desc {
        font-size: 15px;
    }

    .page-section {
        padding: 64px 0;
    }

    .trust-bar {
        padding: 48px 0;
    }

    .trust-bar-inner {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    
    .trust-item {
        padding: 0;
        border: none;
    }

    .trust-value {
        font-size: 30px;
    }

    .offerings-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .cases-grid,
    .news-grid {
        margin-bottom: 40px;
    }

    .cta-section {
        padding: 64px 0;
    }

    .cta-title {
        font-size: 28px;
    }

    .cta-form {
        grid-template-columns: 1fr;
        padding: 24px;
    }

    .cta-form .form-group:nth-child(n) {
        grid-column: 1 / -1;
    }
    
    .cta-btn {
        width: 100%;
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 36px;
        margin-bottom: 36px;
    }

    .footer {
        padding: 56px 0 24px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .footer-links-bottom {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }

    .trust-bar-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .cta-title {
        font-size: 24px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #1a365d;
    color: white;
    padding: 8px 16px;
    z-index: 10000;
    text-decoration: none;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

:focus-visible {
    outline: 2px solid #4fd1c5;
    outline-offset: 2px;
}

.page-header {
    position: relative;
    padding: 112px 0 84px;
    background: linear-gradient(135deg, #0f172a 0%, #1a365d 42%, #1e40af 76%, #2563eb 100%);
    color: #fff;
    text-align: center;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -45%;
    right: -15%;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,.16) 0%, transparent 70%);
    pointer-events: none;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -38%;
    left: -10%;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(56,189,248,.10) 0%, transparent 70%);
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: -0.02em;
    line-height: 1.18;
    background: linear-gradient(180deg, #ffffff 0%, rgba(191,219,254,.92) 55%, rgba(147,197,253,.78) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: clamp(15px, 2.2vw, 18px);
    color: rgba(191,219,254,.88);
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.65;
}

.breadcrumb-nav {
    margin-top: 22px;
    font-size: 14px;
}

.breadcrumb-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.breadcrumb-nav span {
    color: rgba(255, 255, 255, 0.6);
    margin: 0 10px;
}

/* 页面头部面包屑：胶囊样式（毛玻璃） */
.page-header .breadcrumb-nav {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 9px 20px;
    background: rgba(15,23,42,.42);
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,.12);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}

.page-header .breadcrumb-nav a:hover {
    color: #fff;
    text-decoration: underline;
}

.page-header .breadcrumb-nav span {
    margin: 0 2px;
}

@media (max-width: 768px) {
    .page-header {
        padding: 92px 0 56px;
    }
}

.page-section {
    padding: 80px 0;
}

.page-section.alt-bg {
    background-color: #f7fafc;
}

/* 子栏目导航 */
.sub-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    border-bottom: 2px solid #e6f0ff;
    padding-bottom: 0;
    flex-wrap: wrap;
}
.sub-nav-item {
    display: inline-block;
    padding: 14px 32px;
    color: #666;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px 8px 0 0;
    transition: all 0.2s;
    margin-bottom: -2px;
    border-bottom: 2px solid transparent;
}
.sub-nav-item:hover {
    color: #1a365d;
}
.sub-nav-item.active {
    color: #1a365d;
    border-bottom-color: #1a365d;
    font-weight: 600;
}
@media (max-width: 768px) {
    .sub-nav-item {
        padding: 12px 20px;
        font-size: 14px;
    }
}

.filter-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: #1a365d;
    color: #fff;
    border-color: #1a365d;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 15px;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    text-decoration: none;
    color: #666;
    font-size: 14px;
    transition: all 0.3s ease;
}

.pagination a:hover,
.pagination .current {
    background-color: #1a365d;
    color: #fff;
    border-color: #1a365d;
}

.detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.detail-content h2 {
    font-size: 28px;
    color: #1a365d;
    margin: 40px 0 20px;
}

.detail-content h3 {
    font-size: 22px;
    color: #2d3748;
    margin: 30px 0 15px;
}

.detail-content p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: #4a5568;
}

.detail-content ul,
.detail-content ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.detail-content li {
    margin-bottom: 10px;
    line-height: 1.8;
    color: #4a5568;
}

.detail-featured-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 40px;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    width: 50%;
    padding-right: 50px;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 50px;
}

.timeline-dot {
    position: absolute;
    right: -8px;
    top: 10px;
    width: 16px;
    height: 16px;
    background: #1a365d;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px #1a365d;
}

.timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -8px;
}

.timeline-date {
    font-size: 18px;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 10px;
}

.timeline-content {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-card {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-name {
    font-size: 18px;
    font-weight: 600;
    color: #1a365d;
    margin-bottom: 5px;
}

.team-position {
    font-size: 14px;
    color: #718096;
    margin-bottom: 15px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.contact-info-list {
    list-style: none;
    margin-bottom: 30px;
}

.contact-info-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-info-list i {
    font-size: 24px;
    color: #1a365d;
    margin-right: 20px;
    margin-top: 5px;
}

.contact-info-list h4 {
    font-size: 16px;
    color: #1a365d;
    margin-bottom: 5px;
}

.contact-info-list p {
    color: #718096;
    font-size: 14px;
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2d3748;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
    outline: none;
    border-color: #1a365d;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* 地图组件 */
.map-section-head {
    text-align: center;
    margin-bottom: 35px;
}

.map-section-head h2 {
    font-size: 28px;
    color: #1a365d;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.map-section-head h2 i {
    color: #2563eb;
}

.map-section-head p {
    color: #718096;
    margin-top: 10px;
    font-size: 15px;
}

.map-layout {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 30px;
    align-items: stretch;
}

.map-box {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
}

.factory-map {
    width: 100%;
    height: 420px;
    background: #e2e8f0;
}

.map-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 16px;
    background: #f7fafc;
    border-top: 1px solid #edf2f7;
}

.map-btn {
    flex: 1 1 auto;
    min-width: 110px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 14px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.map-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    opacity: 0.95;
}

.map-btn-baidu {
    background: #2932e1;
}

.map-btn-amap {
    background: #1a9bfc;
}

.map-btn-tencent {
    background: #1aad19;
}

.map-btn-copy {
    background: #1a365d;
}

.map-btn i {
    font-size: 14px;
}

.map-info {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
}

.map-info h3 {
    font-size: 19px;
    color: #1a365d;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid #edf2f7;
}

.map-info-list {
    list-style: none;
}

.map-info-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 18px;
}

.map-info-list i {
    font-size: 20px;
    color: #2563eb;
    margin-right: 14px;
    margin-top: 3px;
}

.map-info-label {
    display: block;
    font-size: 12px;
    color: #a0aec0;
    margin-bottom: 3px;
}

.map-info-list p {
    color: #2d3748;
    font-size: 14px;
    line-height: 1.5;
}

.map-tips {
    margin-top: auto;
    padding: 14px;
    background: #fffaf0;
    border: 1px solid #f6e2bf;
    border-radius: 8px;
    color: #8a6d3b;
    font-size: 13px;
    line-height: 1.6;
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.map-tips i {
    color: #e0a93b;
    margin-top: 2px;
}

.map-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: #718096;
    text-align: center;
    padding: 20px;
}

.map-fallback i {
    font-size: 40px;
    color: #2563eb;
}

.map-fallback p {
    max-width: 320px;
    font-size: 14px;
}

.factory-pin-inner {
    width: 36px;
    height: 36px;
    background: #2563eb;
    border: 3px solid #fff;
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
}

.factory-pin-inner i {
    transform: rotate(45deg);
    color: #fff;
    font-size: 16px;
}

.map-popup strong {
    display: block;
    margin-bottom: 4px;
    color: #1a365d;
}

.map-popup span {
    font-size: 13px;
    color: #4a5568;
}

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

    .factory-map {
        height: 320px;
    }

    .map-btn {
        min-width: 0;
    }
}

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

.faq-item {
    background: #fff;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #1a365d;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f7fafc;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 25px 20px;
    color: #718096;
    line-height: 1.8;
}

.share-buttons {
    display: flex;
    gap: 10px;
    margin: 30px 0;
    padding: 20px 0;
    border-top: 1px solid #e2e8f0;
    border-bottom: 1px solid #e2e8f0;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f7fafc;
    color: #718096;
    text-decoration: none;
    transition: all 0.3s ease;
}

.share-btn:hover {
    background: #1a365d;
    color: #fff;
}

.related-posts {
    margin-top: 60px;
}

.related-posts h3 {
    font-size: 24px;
    color: #1a365d;
    margin-bottom: 30px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.related-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
}

.related-card:hover {
    transform: translateY(-3px);
}

.related-card-img {
    height: 150px;
    overflow: hidden;
}

.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-card-content {
    padding: 15px;
}

.related-card-content h4 {
    font-size: 14px;
    color: #2d3748;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-clamp: 2;
    overflow: hidden;
}

.branches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.branch-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.branch-card h4 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 15px;
}

.branch-card p {
    font-size: 14px;
    color: #718096;
    margin-bottom: 10px;
    line-height: 1.6;
}

.branch-card i {
    color: #4fd1c5;
    margin-right: 10px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-card {
    text-align: center;
    padding: 40px 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1a365d, #2c5282);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #fff;
}

.value-card h3 {
    font-size: 20px;
    color: #1a365d;
    margin-bottom: 10px;
}

.value-card p {
    font-size: 14px;
    color: #718096;
    line-height: 1.8;
}

/* 品牌历程时间线（含世界冠军背书） */
.timeline {
    list-style: none;
    position: relative;
    margin: 30px 0 0;
    padding: 0 0 0 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(180deg, #1a365d, #2c5282);
}

.timeline-item {
    position: relative;
    padding: 0 0 30px 24px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    border: 3px solid #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.timeline-year {
    display: inline-block;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #1a365d, #2c5282);
    padding: 3px 12px;
    border-radius: 20px;
    margin-bottom: 8px;
}

.timeline-body h4 {
    font-size: 17px;
    color: #1a365d;
    margin-bottom: 6px;
}

.timeline-body p {
    font-size: 14px;
    color: #718096;
    line-height: 1.7;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.cert-item {
    background: #fff;
    padding: 30px 20px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-5px);
}

.cert-icon {
    font-size: 48px;
    color: #1a365d;
    margin-bottom: 15px;
}

.cert-item h4 {
    font-size: 14px;
    color: #2d3748;
    margin-bottom: 5px;
}

.cert-item span {
    font-size: 12px;
    color: #a0aec0;
}

.product-detail-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-detail-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.product-detail-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-detail-info h2 {
    font-size: 36px;
    color: #1a365d;
    margin-bottom: 20px;
}

.product-detail-info .subtitle {
    font-size: 18px;
    color: #718096;
    margin-bottom: 30px;
    line-height: 1.8;
}

.product-features {
    list-style: none;
    margin-bottom: 30px;
}

.product-features li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #4a5568;
}

.product-features i {
    color: #48bb78;
    margin-right: 12px;
    font-size: 18px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-item-icon {
    width: 60px;
    height: 60px;
    background: #ebf8ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #3182ce;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 10px;
}

.feature-item p {
    font-size: 14px;
    color: #718096;
    line-height: 1.8;
}

.case-study-hero {
    background: #1a365d;
    color: #fff;
    padding: 80px 0;
}

.case-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.case-meta-item h4 {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 8px;
}

.case-meta-item p {
    font-size: 18px;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #1a365d;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 14px;
    color: #718096;
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 32px;
    }
    
    .page-header p {
        font-size: 16px;
    }
    
    .page-section {
        padding: 60px 0;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 50px;
    }
    
    .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 12px;
        right: auto;
    }
    
    .product-detail-hero {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .product-detail-info h2 {
        font-size: 28px;
    }
    
    .case-meta {
        grid-template-columns: 1fr 1fr;
    }
    
    .stat-number {
        font-size: 36px;
    }
}
/* ===== Toast 提示组件 ===== */
.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
    max-width: 420px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-left: 4px solid #1a73e8;
    color: #1a1a1a;
    font-size: 14px;
    line-height: 1.5;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: auto;
    min-width: 280px;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast i {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    word-break: break-word;
}

.toast-success {
    border-left-color: #0f9d58;
    color: #0f9d58;
}

.toast-error {
    border-left-color: #d93025;
    color: #d93025;
}

.toast-warning {
    border-left-color: #f9ab00;
    color: #f9ab00;
}

.toast-info {
    border-left-color: #1a73e8;
    color: #1a73e8;
}

@media (max-width: 600px) {
    .toast-container {
        top: 16px;
        right: 16px;
        left: 16px;
        max-width: none;
    }
    .toast {
        min-width: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .toast {
        transition: opacity 0.2s;
        transform: none;
    }
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    aspect-ratio: 16 / 9;
    margin: 16px 0;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}
.video-container iframe,
.video-container video,
.video-container > .polyv-player-wrapper,
.video-container > div[id^="plv_"] {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    border: none;
    margin: 0;
    padding: 0;
}
.video-container .polyv-player-wrapper iframe,
.video-container > div[id^="plv_"] > iframe {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    border: none;
    margin: 0;
    padding: 0;
}

.polyv-video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    margin: 16px 0;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}
.polyv-video-wrapper > div,
.polyv-video-wrapper > iframe {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

.detail-content video {
    max-width: 100%;
    border-radius: 8px;
}
.detail-content .video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.detail-content iframe {
    max-width: 100%;
}