/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: var(--fz-body);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-brand);
    color: #FFFFFF;
    box-shadow: var(--shadow-card);
}

.btn-primary:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(30, 90, 168, 0.12);
    color: var(--color-brand-blue);
}

.btn-outline {
    border: 1px solid rgba(30, 90, 168, 0.4);
    color: var(--color-brand-blue);
    background: transparent;
}

.btn-outline:hover {
    background: rgba(30, 90, 168, 0.08);
}

.btn-ghost {
    background: transparent;
    color: var(--color-slate);
    padding-inline: 16px;
}

.btn-cta {
    background: var(--gradient-cta);
    color: #FFFFFF;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.35);
}

.btn-cta:hover {
    transform: translateY(-2px);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

.link-arrow::after {
    content: '→';
    transition: transform 0.3s ease;
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

/* Header & Nav */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(18px);
    box-shadow: none;
    z-index: 999;
    transition: var(--transition-base);
}

.site-header.is-sticky {
    box-shadow: var(--shadow-nav);
}

.header-inner {
    width: min(1300px, 100% - 48px);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: inherit;
}

.brand-mark {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    font-weight: 700;
    color: #FFFFFF;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-name {
    font-size: 18px;
    font-weight: 700;
}

.brand-desc {
    font-size: 12px;
    color: var(--color-muted);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.site-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.site-nav a {
    color: var(--color-deep-navy);
    font-weight: 600;
    position: relative;
    padding: 10px 4px;
}

.site-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 2px;
    background: var(--color-brand-blue);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.site-nav a:hover::after,
.site-nav a.is-active::after {
    transform: scaleX(1);
}

.has-dropdown {
    position: relative;
}

.dropdown-panel {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: #FFFFFF;
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-base);
}

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

.dropdown-panel a {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
}

.dropdown-panel a:hover {
    background: rgba(30, 90, 168, 0.08);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    border: 1px solid rgba(15, 39, 68, 0.15);
    background: #FFFFFF;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-deep-navy);
    transition: var(--transition-base);
}

/* Hero */
.hero {
    padding-top: calc(var(--space-2xl) + var(--header-height));
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-spring-green);
    font-weight: 600;
}

.hero-title {
    font-size: clamp(40px, 5vw, 64px);
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    font-size: var(--fz-body-lg);
    color: var(--color-slate);
    margin-bottom: var(--space-md);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.hero-visual {
    position: relative;
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    background: radial-gradient(circle at top, rgba(30, 90, 168, 0.25), rgba(15, 39, 68, 0.9));
    overflow: hidden;
    color: #FFFFFF;
}

.floating-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-shapes span {
    position: absolute;
    width: 80px;
    height: 80px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    animation: float 12s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(6deg); }
    100% { transform: translateY(0) rotate(0deg); }
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-sm);
}

.stat-card {
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
}

.stat-label {
    font-size: var(--fz-caption);
    color: rgba(255, 255, 255, 0.8);
}

/* Section Headers */
.section-header {
    max-width: 720px;
    margin: 0 auto var(--space-xl);
    text-align: center;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    background: rgba(15, 39, 68, 0.06);
    color: var(--color-slate);
    font-size: var(--fz-caption);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    margin: 0 auto;
    color: var(--color-slate);
}

/* Grid Utilities */
.grid {
    display: grid;
    gap: var(--space-md);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-auto { grid-auto-flow: column; grid-auto-columns: minmax(240px, 1fr); }

/* Card styles */
.service-card,
.info-card,
.news-card,
.case-card,
.partner-card,
.team-card,
.value-card,
.timeline-card,
.job-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
    transition: var(--transition-base);
}

.service-card:hover,
.info-card:hover,
.news-card:hover,
.case-card:hover,
.partner-card:hover,
.job-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: rgba(30, 90, 168, 0.12);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--color-brand-blue);
    margin-bottom: var(--space-sm);
}

.card-figure {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
}

.badge {
    display: inline-flex;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: var(--fz-small);
    background: rgba(30, 90, 168, 0.1);
    color: var(--color-brand-blue);
}

.badge-outline {
    border: 1px solid rgba(100, 116, 139, 0.3);
    background: transparent;
    color: var(--color-slate);
}

.tag {
    display: inline-flex;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: rgba(15, 39, 68, 0.06);
    font-size: var(--fz-small);
}

.list-check {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-xs);
}

.list-check li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.list-check li::before {
    content: '✔';
    color: var(--color-spring-green);
    font-weight: 700;
}

.timeline {
    position: relative;
    padding-left: var(--space-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(15, 39, 68, 0.2);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -28px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 3px solid #FFFFFF;
    background: var(--color-brand-blue);
    box-shadow: 0 0 0 4px rgba(30, 90, 168, 0.15);
}

.timeline-year {
    font-size: 18px;
    font-weight: 700;
}

.logo-wall {
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: #FFFFFF;
    border: 1px solid rgba(15, 39, 68, 0.06);
}

.logo-track {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-md);
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.logo-item {
    min-width: 140px;
    height: 64px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(15, 39, 68, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-slate);
    font-weight: 600;
}

.logo-item img {
    max-width: 80%;
    max-height: 70%;
    object-fit: contain;
}

.cta-panel {
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    background: var(--gradient-brand);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.cta-panel::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255,255,255,0.3), transparent 50%);
    pointer-events: none;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.breadcrumbs {
    font-size: var(--fz-small);
    color: var(--color-muted);
    margin-bottom: var(--space-md);
}

.detail-layout {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: var(--space-xl);
}

.detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.article {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
}

.article-header {
    margin-bottom: var(--space-lg);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    color: var(--color-muted);
    font-size: var(--fz-small);
}

.share-group {
    display: flex;
    gap: var(--space-xs);
}

.share-group button,
.share-group a {
    border: 1px solid rgba(15, 39, 68, 0.15);
    border-radius: var(--radius-pill);
    padding: 6px 12px;
    font-size: var(--fz-small);
    background: transparent;
}

.data-highlight {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.data-pill {
    padding: 12px 20px;
    border-radius: var(--radius-pill);
    background: rgba(15, 39, 68, 0.06);
    font-weight: 600;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-control,
.select-control,
.textarea-control {
    width: 100%;
    padding: 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    font-size: var(--fz-body);
    font-family: inherit;
    background: #FFFFFF;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-control:focus,
.select-control:focus,
.textarea-control:focus {
    border-color: var(--color-brand-blue);
    box-shadow: 0 0 0 3px rgba(30, 90, 168, 0.15);
    outline: none;
}

.textarea-control {
    min-height: 140px;
    resize: vertical;
}

.form-actions {
    margin-top: var(--space-md);
}

.form-message {
    margin-top: var(--space-sm);
    font-size: var(--fz-small);
}

.form-message.is-error {
    color: #DC2626;
}

.form-message.is-success {
    color: var(--color-spring-green);
}

.status-chip {
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-spring-green);
    font-weight: 600;
}

/* Footer */
.site-footer {
    background: var(--color-surface-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-column h5 {
    margin-bottom: var(--space-sm);
    color: #FFFFFF;
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--fz-small);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: var(--space-sm);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: space-between;
    font-size: var(--fz-small);
}

.footer-social {
    display: flex;
    gap: var(--space-xs);
}

.footer-social a {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 14px;
}