:root {
    --primary: #1a3a6c;
    --primary-dark: #0d2240;
    --primary-light: #2a5298;
    --secondary: #0f3460;
    --dark: #0d1b2a;
    --darker: #060e18;
    --accent: #16213e;
    --gold: #c8a45c;
    --gold-light: #dfc07a;
    --gold-dark: #a88a3e;
    --text: #333333;
    --text-light: #ffffff;
    --text-muted: #666666;
    --text-muted-light: rgba(255,255,255,0.6);
    --bg-white: #ffffff;
    --bg-light: #f5f7fa;
    --bg-lighter: #eef1f6;
    --border: #e0e4ea;
    --silver: #a0a8b4;
    --bronze: #b87333;
    --gradient-primary: linear-gradient(135deg, #1a3a6c 0%, #0d2240 100%);
    --gradient-gold: linear-gradient(135deg, #c8a45c 0%, #dfc07a 50%, #c8a45c 100%);
    --gradient-hero: linear-gradient(135deg, #0d2240 0%, #1a3a6c 40%, #2a5298 100%);
    --gradient-dark: linear-gradient(135deg, #0d1b2a 0%, #1a3a6c 100%);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-primary: 0 4px 20px rgba(26, 58, 108, 0.2);
    --shadow-gold: 0 4px 20px rgba(200, 164, 92, 0.3);
    --radius: 8px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-white);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.7;
}

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

::selection {
    background: var(--gold);
    color: var(--primary-dark);
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

#mainNav {
    background: rgba(13, 34, 64, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--gold);
    padding: 8px 0;
    transition: var(--transition);
    z-index: 1050;
}

#mainNav.scrolled {
    background: rgba(13, 34, 64, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-logo-svg {
    flex-shrink: 0;
}

.nav-logo-img {
    height: 36px;
    margin-right: 8px;
}

.footer-logo-img {
    height: 44px;
    margin-bottom: 8px;
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
}

.navbar-brand {
    font-weight: 700;
    font-size: 20px;
    color: #fff !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
    font-weight: 500;
    padding: 8px 18px !important;
    border-radius: 4px;
    transition: var(--transition);
    position: relative;
    font-size: 15px;
}

.nav-link:hover,
.nav-link.active {
    color: #fff !important;
    background: rgba(200, 164, 92, 0.15);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--gold);
    border-radius: 1px;
}

.btn-register {
    background: var(--gradient-gold) !important;
    color: var(--primary-dark) !important;
    font-weight: 700 !important;
    border-radius: 25px !important;
    padding: 8px 24px !important;
    letter-spacing: 1px;
}

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

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    opacity: 0.12;
    overflow: hidden;
}
.hero-overlay img {
    width: 33.333%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 576px) {
    .hero-overlay img {
        width: 100%;
    }
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 100px 20px 80px;
}

.hero-badge {
    display: inline-block;
    background: rgba(200, 164, 92, 0.15);
    border: 1px solid rgba(200, 164, 92, 0.4);
    color: var(--gold-light);
    padding: 8px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInDown 0.8s ease;
}

.hero-title {
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 18px;
    animation: fadeInUp 0.8s ease 0.2s both;
    text-align: center;
}

.title-highlight {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: clamp(1.2rem, 3.5vw, 2.5rem);
    font-weight: 900;
    display: block;
    margin-bottom: 0.15em;
}

.hero-title-sub {
    font-size: clamp(1.1rem, 3vw, 2.2rem);
    font-weight: 700;
    color: #fff;
    display: block;
}

.hero-subtitle {
    font-size: clamp(1.3rem, 3vw, 2.5rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 36px;
    animation: fadeInUp 0.8s ease 0.4s both;
    letter-spacing: 2px;
    text-align: center;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.btn-hero-primary {
    background: var(--gradient-gold);
    color: var(--primary-dark);
    border: none;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow-gold);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(200, 164, 92, 0.4);
    color: var(--primary-dark);
}

.btn-hero-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-hero-secondary:hover {
    border-color: var(--gold);
    color: var(--gold-light);
    background: rgba(200, 164, 92, 0.1);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--gold-light);
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 4px;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.4);
    animation: bounce 2s infinite;
    font-size: 24px;
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-tag {
    display: inline-block;
    background: rgba(26, 58, 108, 0.08);
    color: var(--primary);
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 12px;
    border: 1px solid rgba(26, 58, 108, 0.15);
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.section-desc {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.section-more {
    display: inline-block;
    color: var(--primary);
    font-size: 14px;
    margin-top: 8px;
}

.section-more:hover {
    color: var(--gold);
}

.bg-light {
    background: var(--bg-light) !important;
}

.highlight-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.highlight-card:hover {
    transform: translateY(-8px);
    border-color: var(--gold);
    box-shadow: var(--shadow-gold);
}

.highlight-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: #fff;
}

.highlight-card h4 {
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 12px;
}

.highlight-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--gold), rgba(200, 164, 92, 0.1));
}

.timeline-item {
    position: relative;
    padding: 20px 0;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-white);
    border: 3px solid var(--gold-dark);
    z-index: 2;
    transition: var(--transition);
}

.timeline-item.active .timeline-dot {
    background: var(--gold);
    box-shadow: 0 0 20px rgba(200, 164, 92, 0.5);
}

.timeline-content {
    width: 45%;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--gold);
    box-shadow: var(--shadow-gold);
}

.timeline-date {
    color: var(--gold-dark);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

.timeline-content h4 {
    color: var(--primary-dark);
    font-size: 16px;
    margin-bottom: 6px;
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 13px;
    margin: 0;
}

.prize-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border);
}

.prize-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.prize-gold::before { background: linear-gradient(90deg, transparent, var(--gold), transparent); }
.prize-silver::before { background: linear-gradient(90deg, transparent, var(--silver), transparent); }
.prize-bronze::before { background: linear-gradient(90deg, transparent, var(--bronze), transparent); }
.prize-special::before { background: var(--gradient-primary); }

.prize-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.prize-gold:hover { box-shadow: 0 8px 30px rgba(200, 164, 92, 0.2); }
.prize-silver:hover { box-shadow: 0 8px 30px rgba(160, 168, 180, 0.2); }
.prize-bronze:hover { box-shadow: 0 8px 30px rgba(184, 115, 51, 0.2); }

.prize-medal {
    font-size: 48px;
    margin-bottom: 12px;
}

.prize-card h3, .prize-card h4 {
    color: var(--primary-dark);
    font-weight: 700;
    margin-bottom: 8px;
}

.prize-amount {
    font-size: 28px;
    font-weight: 900;
    color: var(--gold-dark);
    margin-bottom: 16px;
}

.prize-gold .prize-amount { color: var(--gold-dark); }
.prize-silver .prize-amount { color: var(--silver); }
.prize-bronze .prize-amount { color: var(--bronze); }

.prize-count {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.prize-details {
    list-style: none;
    padding: 0;
    margin: 0;
}

.prize-details li {
    color: var(--text-muted);
    font-size: 14px;
    padding: 4px 0;
}

.announcement-card-link {
    display: block;
    text-decoration: none;
}

.announcement-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    position: relative;
    height: 100%;
}

.announcement-card:hover {
    border-color: var(--gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}

.announcement-type-badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 12px;
}

.type-notice { background: rgba(26, 58, 108, 0.1); color: var(--primary); }
.type-news { background: rgba(200, 164, 92, 0.15); color: var(--gold-dark); }
.type-update { background: rgba(40, 167, 69, 0.1); color: #28a745; }

.top-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--gradient-gold);
    color: var(--primary-dark);
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.announcement-card h4 {
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.5;
}

.announcement-card p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.announcement-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-muted);
}

.read-more {
    color: var(--primary);
    font-weight: 500;
}

.announcement-filters {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 25px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

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

.announcement-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.announcement-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    gap: 20px;
}

.announcement-list-item:hover {
    border-color: var(--gold);
    transform: translateX(4px);
    box-shadow: var(--shadow-gold);
}

.announcement-list-left {
    flex: 1;
}

.announcement-type-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 12px;
    margin-right: 8px;
}

.top-tag {
    display: inline-block;
    background: var(--gradient-gold);
    color: var(--primary-dark);
    padding: 2px 8px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    margin-right: 8px;
}

.announcement-list-left h4 {
    color: var(--primary-dark);
    font-size: 17px;
    font-weight: 600;
    margin: 10px 0 8px;
}

.announcement-list-left p {
    color: var(--text-muted);
    font-size: 14px;
    margin: 0;
}

.announcement-list-right {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.announcement-date {
    text-align: center;
    min-width: 56px;
}

.date-day {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.date-month {
    font-size: 13px;
    color: var(--text-muted);
}

.announcement-arrow {
    color: var(--text-muted);
    font-size: 18px;
    transition: var(--transition);
}

.announcement-list-item:hover .announcement-arrow {
    color: var(--gold);
    transform: translateX(4px);
}

.page-hero {
    position: relative;
    padding: 140px 0 60px;
    background: var(--gradient-hero);
    text-align: center;
    overflow: hidden;
}

.page-hero .hero-overlay {
    background: url('/images/campus-gate.jpg') center/cover no-repeat;
    opacity: 0.08;
}

.page-hero .hero-content {
    position: relative;
    z-index: 2;
}

.page-hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.page-hero p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
}

.announcement-type-tag.large {
    font-size: 14px;
    padding: 4px 16px;
    margin-bottom: 16px;
    display: inline-block;
}

.about-block {
    margin-bottom: 20px;
}

.about-img-wrapper {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

.about-img-svg {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-lg);
}

.about-text {
    padding-left: 20px;
}

.about-text h2 {
    color: var(--primary-dark);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.about-text p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.mission-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

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

.mission-icon {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 16px;
}

.mission-card h4 {
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.mission-card p {
    color: var(--text-muted);
    font-size: 14px;
}

.track-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: var(--transition);
    height: 100%;
    position: relative;
}

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

.track-number {
    font-size: 48px;
    font-weight: 900;
    color: rgba(26, 58, 108, 0.08);
    line-height: 1;
    margin-bottom: 12px;
}

.track-card h4 {
    color: var(--primary-dark);
    font-size: 18px;
    margin-bottom: 8px;
}

.track-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 12px;
}

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

.track-tags span {
    background: rgba(26, 58, 108, 0.08);
    color: var(--primary);
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
}

.track-cta {
    text-align: center;
    padding: 40px;
}

.track-cta h4 {
    color: var(--primary-dark);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
}

.judging-criteria {
    max-width: 700px;
    margin: 0 auto;
}

.criteria-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}

.criteria-bar {
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 12px;
    min-width: 80px;
}

.criteria-percent {
    color: #fff;
    font-weight: 700;
    font-size: 14px;
}

.criteria-info h5 {
    color: var(--primary-dark);
    font-size: 15px;
    margin-bottom: 2px;
}

.criteria-info p {
    color: var(--text-muted);
    font-size: 13px;
    margin: 0;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.rule-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}

.rule-item:hover {
    border-color: var(--gold);
    box-shadow: var(--shadow-gold);
}

.rule-icon {
    font-size: 28px;
    color: var(--gold-dark);
    margin-bottom: 12px;
}

.rule-item h5 {
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.rule-item p {
    color: var(--text-muted);
    font-size: 14px;
    margin: 0;
}

.register-form-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.submit-requirements {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 1px solid #dee2e6;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.submit-requirements h4 {
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.submit-requirements p {
    color: #495057;
    margin-bottom: 12px;
}

.submit-requirements ol {
    padding-left: 24px;
    margin-bottom: 0;
}

.submit-requirements li {
    color: #495057;
    margin-bottom: 8px;
    line-height: 1.6;
}

.submit-requirements li strong {
    color: var(--primary);
}

.form-section {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section-title {
    color: var(--primary);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-control,
.form-select {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 10px 14px;
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    background: var(--bg-white);
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(26, 58, 108, 0.15);
    color: var(--text);
}

.form-control::placeholder {
    color: var(--silver);
}

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

.form-check-input {
    background-color: var(--bg-light);
    border-color: var(--border);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-label {
    color: var(--text-muted);
    font-size: 14px;
}

.form-check-label a {
    color: var(--primary);
}

.form-actions {
    text-align: center;
    padding-top: 16px;
}

.form-actions .btn {
    min-width: 200px;
}

.alert {
    border-radius: var(--radius);
    border: none;
}

.alert-danger {
    background: rgba(220, 53, 69, 0.08);
    color: #dc3545;
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.success-card {
    background: var(--bg-white);
    border: 1px solid rgba(40, 167, 69, 0.3);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    text-align: center;
}

.success-icon {
    font-size: 64px;
    color: #28a745;
    margin-bottom: 20px;
}

.success-card h2 {
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.success-card p {
    color: var(--text-muted);
    margin-bottom: 8px;
}

.success-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 24px;
}

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
}

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

.detail-content {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    line-height: 1.8;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.detail-content p {
    color: var(--text);
    font-size: 15px;
    margin-bottom: 12px;
}

.detail-content h1, .detail-content h2, .detail-content h3,
.detail-content h4, .detail-content h5, .detail-content h6 {
    color: var(--primary-dark);
    margin-top: 24px;
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.4;
}

.detail-content h1 { font-size: 1.8em; }
.detail-content h2 { font-size: 1.5em; }
.detail-content h3 { font-size: 1.3em; }
.detail-content h4 { font-size: 1.15em; }

.detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 16px auto;
    display: block;
}

.detail-content a {
    color: var(--primary);
    text-decoration: underline;
}

.detail-content a:hover {
    color: var(--gold-dark);
}

.detail-content blockquote {
    border-left: 4px solid var(--gold);
    padding: 12px 20px;
    margin: 16px 0;
    background: var(--bg-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-muted);
}

.detail-content blockquote p {
    margin-bottom: 0;
}

.detail-content ul, .detail-content ol {
    padding-left: 24px;
    margin-bottom: 12px;
}

.detail-content li {
    margin-bottom: 6px;
    font-size: 15px;
    color: var(--text);
}

.detail-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.detail-content th, .detail-content td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
    font-size: 14px;
}

.detail-content th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--primary-dark);
}

.detail-content pre {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    overflow-x: auto;
    margin: 16px 0;
}

.detail-content code {
    background: var(--bg-lighter);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--primary);
}

.detail-content pre code {
    background: none;
    padding: 0;
    color: var(--text);
}

.detail-content hr {
    border: none;
    border-top: 2px solid var(--border);
    margin: 24px 0;
}

.detail-content strong, .detail-content b {
    font-weight: 700;
    color: var(--primary-dark);
}

.detail-content em, .detail-content i {
    font-style: italic;
}

.detail-content section, .detail-content article {
    margin-bottom: 16px;
}

.detail-content .media-wrapper {
    margin: 16px auto;
    display: block;
    text-align: center;
}

.detail-content .media-wrapper.media-center {
    display: block;
    text-align: center;
}

.detail-content .media-wrapper.media-center img {
    margin-left: auto;
    margin-right: auto;
}

.detail-content .media-toolbar,
.detail-content .media-overlay {
    display: none !important;
}

.detail-content .media-wrapper img {
    margin: 0;
}

.detail-content .video-container {
    position: relative;
    margin: 16px 0;
}

.detail-content iframe,
.detail-content embed,
.detail-content video {
    display: block;
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    margin: 20px auto;
    border-radius: var(--radius);
    border: none;
}

.cta-section {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(200, 164, 92, 0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    text-align: center;
    padding: 40px 20px;
}

.cta-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    margin-bottom: 24px;
}

.btn-cta {
    background: var(--gradient-gold);
    color: var(--primary-dark);
    border: none;
    padding: 14px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow-gold);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(200, 164, 92, 0.4);
    color: var(--primary-dark);
}

.site-footer {
    background: var(--primary-dark);
    border-top: 2px solid var(--gold);
    padding: 60px 0 0;
}

.footer-logo-svg {
    margin-bottom: 8px;
}

.footer-brand-text {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
}

.site-footer h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 10px;
}

.site-footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gold);
}

.site-footer p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact li i {
    color: var(--gold);
}

.footer-contact a {
    color: var(--gold-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    margin-top: 40px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    margin: 0;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-primary);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    background: var(--gradient-gold);
    color: var(--primary-dark);
}

.error-page {
    padding: 60px 20px;
}

.error-code {
    font-size: 120px;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

.error-page h2 {
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.error-page p {
    color: var(--text-muted);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state i {
    font-size: 48px;
    color: var(--silver);
    margin-bottom: 16px;
}

.empty-state h4 {
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-muted);
}

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

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@media (max-width: 992px) {
    .timeline::before { left: 20px; }
    .timeline-item, .timeline-item:nth-child(even) {
        flex-direction: row;
        padding-left: 50px;
    }
    .timeline-dot { left: 20px; }
    .timeline-content { width: 100%; }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 28px; }
}

@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .section-title { font-size: 24px; }
    .hero-content { padding: 100px 16px 60px; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .register-form-card { padding: 24px 16px; }
    .announcement-list-item { flex-direction: column; align-items: flex-start; }
    .announcement-list-right { width: 100%; justify-content: space-between; }
    .about-text { padding-left: 0; margin-top: 24px; }
}