/* ===== 全局导航 & 页脚样式 ===== */

/* Top Bar */
.top-bar {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,0.8);
    font-size: var(--text-sm);
    padding: var(--space-2) 0;
    position: relative;
    z-index: var(--z-sticky);
}

.top-bar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar-left {
    display: flex;
    gap: var(--space-6);
}

.top-bar-left span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.top-bar-left i {
    font-size: 14px;
    color: var(--color-secondary-light);
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    margin-left: auto;
}

.top-bar-right span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.top-bar-right i {
    font-size: 14px;
    color: var(--color-secondary-light);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
    padding: var(--space-4) 0;
}

.navbar.scrolled {
    border-bottom-color: var(--color-gray-100);
    box-shadow: var(--shadow-sm);
    padding: var(--space-3) 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
}

.navbar-logo {
    position: relative;
    top: -5px;
    height: 40px;
    width: auto;
    display: block;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--text-xl);
    font-weight: var(--font-extrabold);
    box-shadow: 0 4px 12px rgba(43,127,255,0.3);
}

.brand-icon.white {
    background: rgba(255,255,255,0.15);
}

.brand-text {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--color-secondary);
    background: rgba(43,127,255,0.06);
}

.nav-link.active {
    color: var(--color-secondary);
    background: rgba(43,127,255,0.08);
    font-weight: var(--font-semibold);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.navbar-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.navbar-toggle:hover {
    background: var(--color-gray-100);
}

/* Footer */
.footer {
    background: var(--gradient-dark);
    color: var(--color-gray-300);
    padding: var(--space-20) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer-logo-img {
    height: 30px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer .brand-text {
    color: var(--color-white);
    font-size: var(--text-2xl);
}

.footer-desc {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
    line-height: var(--leading-relaxed);
}

.footer-contact {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.footer-contact div {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.footer-contact i {
    color: var(--color-secondary-light);
}

.footer-links h4 {
    color: var(--color-white);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-5);
}

.footer-links a {
    display: block;
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    padding: var(--space-1) 0;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-secondary-light);
}

.footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.footer-tags span {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-full);
    color: var(--color-gray-400);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: var(--space-8);
    text-align: center;
}

.footer-guarantees {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-gray-400);
}

.footer-guarantees span {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.footer-guarantees i {
    color: var(--color-success);
}

.footer-copyright {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

/* Responsive */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    .top-bar { display: none; }

    .navbar-toggle { display: flex; align-items: center; justify-content: center; }

    .navbar-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-2);
        padding: var(--space-8);
        transform: translateX(100%);
        transition: transform var(--transition-base);
        z-index: var(--z-overlay);
    }

    .navbar-nav.active {
        transform: translateX(0);
    }

    .nav-link {
        font-size: var(--text-lg);
        padding: var(--space-3) var(--space-6);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-guarantees {
        flex-direction: column;
        gap: var(--space-3);
    }
}

/* ===== 首页 Hero Section ===== */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding: var(--space-16) 0;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.hero-shape-1 {
    width: 500px;
    height: 500px;
    background: rgba(43,127,255,0.15);
    top: -200px;
    right: -100px;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: rgba(255,107,53,0.08);
    bottom: -150px;
    left: -100px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    position: relative;
    z-index: 2;
}

.hero-text {
    flex: 1.2;
}

.hero-visual {
    flex: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    color: rgba(255,255,255,0.9);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-6);
    backdrop-filter: blur(8px);
}

.hero-badge i {
    color: var(--color-accent-light);
}

.hero h1 {
    color: var(--color-white);
    font-size: var(--text-6xl);
    font-weight: var(--font-extrabold);
    line-height: 1.15;
    margin-bottom: var(--space-6);
}

.hero-desc {
    color: rgba(255,255,255,0.75);
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-8);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-metrics {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.hero-metric {
    text-align: center;
}

.hero-metric-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
}

.hero-metric-label {
    font-size: var(--text-sm);
    color: rgba(255,255,255,0.6);
}

.hero-metric-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.15);
}

/* Hero Dashboard Mock */
.hero-dashboard {
    background: rgba(255,255,255,0.95);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0,0,0,0.2);
    overflow: hidden;
    animation: float 6s ease-in-out infinite;
}

.dashboard-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-200);
}

.dashboard-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dashboard-dot.red { background: #EF4444; }
.dashboard-dot.yellow { background: #F59E0B; }
.dashboard-dot.green { background: #10B981; }

.dashboard-title {
    flex: 1;
    text-align: center;
    font-size: var(--text-xs);
    color: var(--color-gray-400);
}

.dashboard-body {
    padding: var(--space-6);
}

.dashboard-stats {
    display: flex;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.dashboard-stat-value {
    display: block;
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
}

.dashboard-stat-label {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
}

.dashboard-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--space-2);
    height: 80px;
    margin-bottom: var(--space-4);
}

.chart-bar {
    flex: 1;
    background: var(--gradient-secondary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    min-height: 8px;
    opacity: 0.7;
}

.dashboard-tags {
    display: flex;
    gap: var(--space-3);
}

.dashboard-tag {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-500);
}

.dashboard-tag.success {
    background: rgba(16,185,129,0.1);
    color: var(--color-success);
}

/* Stats Section */
.section-stats {
    background: var(--gradient-hero);
    padding: var(--space-16) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.stats-grid .stat-card {
    text-align: center;
}

.stats-grid .stat-icon {
    font-size: 28px;
    color: rgba(255,255,255,0.6);
    margin-bottom: var(--space-3);
}

.stats-grid .stat-number {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    color: var(--color-white);
    background: none;
    -webkit-text-fill-color: initial;
}

.stats-grid .stat-label {
    color: rgba(255,255,255,0.7);
    font-size: var(--text-base);
}

/* Feature Number */
.feature-number {
    font-size: var(--text-6xl);
    font-weight: var(--font-extrabold);
    color: var(--color-gray-100);
    margin-bottom: var(--space-4);
    line-height: 1;
}

/* Feature Visual */
.feature-visual {
    position: relative;
}

.feature-visual-card {
    background: var(--gradient-card);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-12);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    overflow: hidden;
}

.feature-visual-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-xl);
    display: block;
}

/* Mission Section */
.section-mission {
    background: var(--color-white);
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.mission-card {
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-base);
}

.mission-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.mission-card-highlight {
    background: var(--gradient-secondary);
    border-color: transparent;
    color: var(--color-white);
}

.mission-card-highlight h4,
.mission-card-highlight p {
    color: var(--color-white);
}

.mission-icon {
    font-size: 32px;
    color: var(--color-secondary);
    margin-bottom: var(--space-4);
}

.mission-card-highlight .mission-icon {
    color: rgba(255,255,255,0.9);
}

.mission-card h4 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.mission-card p {
    color: var(--color-gray-500);
    margin-bottom: 0;
}

/* Honors */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-6);
}

.honor-card {
    padding: var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.honor-card-cover {
    flex-shrink: 0;
    width: 120px;
    height: 80px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.honor-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.honor-card-info {
    flex: 1;
    min-width: 0;
}

.honor-year {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-accent);
    background: rgba(255,107,53,0.1);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

/* CTA Section */
.cta-section {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(43,127,255,0.15);
    filter: blur(80px);
}

/* Responsive Hero */
@media (max-width: 1024px) {
    .hero { min-height: auto; padding: var(--space-16) 0; }
    .hero-content { flex-direction: column; gap: var(--space-8); }
    .hero h1 { font-size: var(--text-4xl); }
    .hero-visual { width: 100%; max-width: 500px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .mission-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: var(--text-3xl); }
    .hero-desc { font-size: var(--text-base); }
    .hero-actions { flex-direction: column; }
    .hero-metrics { flex-wrap: wrap; gap: var(--space-4); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
    .honors-grid { grid-template-columns: 1fr; }
}