/* 
  东升国际 - 科技赋能场景,让娱乐更有趣
  Black Gold Theme (淡黑金)
*/

:root {
    --gold: #d4af37;
    --gold-light: #f1e5ac;
    --gold-dark: #996515;
    --dark: #0a0a0a;
    --dark-accent: #1a1a1a;
    --light: #f5f5f5;
    --muted: #888;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

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

.img-responsive {
    width: 100%;
    height: auto;
}

.rounded {
    border-radius: 20px;
}

.shadow-gold {
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.15);
}

.text-center { text-align: center; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-50 { margin-bottom: 50px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-50 { margin-top: 50px; }

.bg-dark { background-color: var(--dark); }
.bg-dark-accent { background-color: var(--dark-accent); }
.bg-gold-gradient {
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
}

.gold-text { color: var(--gold); }
.text-muted { color: var(--muted); }
.text-dark { color: var(--dark); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-gold {
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
    color: var(--dark);
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

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

.btn-outline:hover {
    background: rgba(212, 175, 55, 0.1);
    transform: translateY(-3px);
}

.btn-dark {
    background-color: var(--dark);
    color: var(--gold);
}

.btn-lg {
    padding: 15px 45px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-text {
    color: var(--gold);
    border-bottom: 1px solid var(--gold);
    padding-bottom: 2px;
}

.btn-text:hover {
    color: var(--gold-light);
    border-color: var(--gold-light);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-sub {
    font-size: 0.6rem;
    color: var(--gold-dark);
    letter-spacing: 3px;
    margin-top: -5px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--light);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--gold);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--gold);
    font-size: 1.5rem;
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 0%, var(--dark) 100%);
}

.hero-content h1 {
    font-size: 5rem;
    font-weight: 900;
    margin-bottom: 10px;
    letter-spacing: -2px;
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gold-light);
    letter-spacing: 5px;
    margin-bottom: 40px;
    opacity: 0.8;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-tag {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold-dark);
    letter-spacing: 4px;
    margin-bottom: 15px;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 30px;
    color: var(--gold-light);
}

.grid {
    display: grid;
    gap: 30px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.items-center { align-items: center; }

/* Intro */
.intro-image {
    position: relative;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    color: var(--dark);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.experience-badge .num {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
}

.experience-badge .label {
    font-size: 0.9rem;
    font-weight: 700;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    background-color: var(--dark-accent);
    padding: 25px;
    border-radius: 20px;
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.stat-num {
    font-size: 2rem;
    font-weight: 900;
    color: var(--gold);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Cards */
.card {
    background-color: var(--dark-accent);
    border-radius: 25px;
    overflow: hidden;
    border: 1px solid rgba(212, 175, 55, 0.05);
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(212, 175, 55, 0.3);
    transform: translateY(-10px);
}

.card-img {
    height: 250px;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img img {
    transform: scale(1.1);
}

.card-body {
    padding: 30px;
}

.icon-gold {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--gold-light);
}

.card p {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.link-gold {
    color: var(--gold);
    font-weight: 700;
    font-size: 0.9rem;
}

/* News */
.news-item {
    padding: 30px;
    background-color: var(--dark-accent);
    border-radius: 20px;
    border: 1px solid rgba(212, 175, 55, 0.05);
    transition: var(--transition);
}

.news-item:hover {
    border-color: var(--gold);
}

.news-date {
    font-family: monospace;
    color: var(--gold-dark);
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.news-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.news-line {
    width: 40px;
    height: 3px;
    background-color: rgba(212, 175, 55, 0.2);
    transition: var(--transition);
}

.news-item:hover .news-line {
    width: 100%;
    background-color: var(--gold);
}

/* Horizontal Scroll */
.horizontal-scroll {
    display: flex;
    overflow-x: auto;
    gap: 25px;
    padding-bottom: 30px;
}

.horizontal-scroll::-webkit-scrollbar {
    height: 5px;
}

.horizontal-scroll::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 10px;
}

.launch-item {
    flex: 0 0 320px;
    background-color: var(--dark-accent);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.launch-img {
    height: 180px;
}

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

.launch-body {
    padding: 20px;
}

.launch-tag {
    font-size: 0.6rem;
    background-color: rgba(212, 175, 55, 0.1);
    color: var(--gold);
    padding: 3px 8px;
    border-radius: 5px;
    font-weight: 700;
    text-transform: uppercase;
}

/* Promo */
.promo-section {
    overflow: hidden;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    font-weight: 700;
    margin-bottom: 15px;
}

.check-list i {
    font-size: 1.5rem;
}

.glass-card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-align: center;
}

.glass-card .num {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 5px;
}

.glass-card .label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.full-width { grid-column: span 2; }

/* Dynamics */
.dynamics-list {
    max-height: 600px;
    overflow-y: auto;
    padding-right: 15px;
}

.dynamics-list::-webkit-scrollbar {
    width: 5px;
}

.dynamics-list::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 10px;
}

.dynamic-item {
    display: flex;
    gap: 25px;
    padding: 25px;
    background-color: var(--dark-accent);
    border-radius: 20px;
    margin-bottom: 20px;
    border: 1px solid rgba(212, 175, 55, 0.05);
}

.dynamic-id {
    width: 60px;
    height: 60px;
    background-color: rgba(212, 175, 55, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    font-weight: 900;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.dynamic-info h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background-color: var(--dark-accent);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
}

.footer h3 {
    color: var(--gold);
    font-size: 1.2rem;
    margin-bottom: 25px;
}

.footer ul li {
    margin-bottom: 15px;
}

.footer ul li i {
    color: var(--gold);
    margin-right: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: var(--dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.social-icons a:hover {
    border-color: var(--gold);
    color: var(--gold);
}

.qr-code img {
    width: 100px;
    height: 100px;
    padding: 5px;
    background: white;
    margin-bottom: 10px;
}

.qr-code p {
    font-size: 0.7rem;
    color: var(--muted);
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid rgba(212, 175, 55, 0.05);
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
}

/* Floating Service */
.floating-service {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.service-btn {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #d4af37 0%, #f1e5ac 50%, #996515 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    font-size: 1.5rem;
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.service-tooltip {
    position: absolute;
    bottom: 75px;
    right: 0;
    background-color: var(--dark-accent);
    padding: 15px;
    border-radius: 15px;
    border: 1px solid var(--gold);
    width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.floating-service:hover .service-tooltip {
    opacity: 1;
    visibility: visible;
}

.service-tooltip p {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold);
}

.service-tooltip span {
    font-size: 0.7rem;
    color: var(--muted);
}

/* Page Header */
.page-header {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--dark-accent);
    position: relative;
    padding-top: 80px;
}

.page-header h1 {
    font-size: 4rem;
    font-weight: 900;
    color: var(--gold-light);
}

.page-header p {
    letter-spacing: 5px;
    color: var(--gold-dark);
}

/* Product Filter Bar */
.filter-bar {
    padding: 40px;
    margin-bottom: 50px;
}

.search-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    gap: 30px;
}

.search-input {
    flex: 1;
    position: relative;
}

.search-input i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gold-dark);
}

.search-input input {
    width: 100%;
    padding: 15px 20px 15px 50px;
    background-color: var(--dark);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 50px;
    color: var(--light);
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sort-btns {
    display: flex;
    background-color: var(--dark);
    padding: 5px;
    border-radius: 50px;
}

.sort-btn {
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer;
}

.sort-btn.active {
    background: var(--gold-gradient);
    color: var(--dark);
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.filter-group h4 {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gold);
    margin-bottom: 15px;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 5px 15px;
    border-radius: 5px;
    font-size: 0.7rem;
    font-weight: 700;
    background-color: var(--dark);
    border: 1px solid rgba(212, 175, 55, 0.1);
    color: var(--muted);
    cursor: pointer;
}

.filter-btn.active {
    background-color: var(--gold);
    color: var(--dark);
}

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

.page-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
    font-weight: 700;
    cursor: pointer;
}

.page-btn.active {
    background: var(--gold-gradient);
    color: var(--dark);
}

/* About Us */
.about-header {
    background-image: linear-gradient(rgba(10,10,10,0.8), rgba(10,10,10,0.8)), url('https://tse-mm.bing.com/th?q=科技团队合作');
    background-size: cover;
    background-position: center;
}

.mission-card {
    padding: 50px;
    text-align: center;
}

.culture-item {
    text-align: center;
    padding: 30px;
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: var(--gold-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: var(--dark);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    width: 2px;
    height: 100%;
    background-color: rgba(212, 175, 55, 0.2);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
}

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

.timeline-item .year {
    width: 100px;
    height: 100px;
    background: var(--gold-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--dark);
    z-index: 1;
    border: 5px solid var(--dark-accent);
}

.timeline-item .content {
    width: 40%;
    background-color: var(--dark);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.team-img {
    height: 350px;
    overflow: hidden;
    filter: grayscale(1);
    transition: var(--transition);
}

.team-card:hover .team-img {
    filter: grayscale(0);
}

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

.team-info {
    padding: 25px;
    text-align: center;
}

.team-info .role {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--gold);
    letter-spacing: 2px;
    margin-bottom: 15px;
}

/* Contact Us */
.contact-card {
    text-align: center;
    padding: 40px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
    font-weight: 700;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 20px;
    background-color: var(--dark);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 10px;
    color: var(--light);
}

.full-width { grid-column: span 2; }

.info-item {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.info-item i {
    color: var(--gold);
    margin-top: 5px;
}

.map-container {
    position: relative;
    height: 400px;
}

.map-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.map-marker {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: var(--gold);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, -70%); }
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero-content h1 { font-size: 4rem; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 3rem; }
    .hero-content h2 { font-size: 1.5rem; }
    .hero-btns { flex-direction: column; }
    .timeline::before { left: 20px; }
    .timeline-item { flex-direction: row !important; align-items: flex-start; }
    .timeline-item .year { width: 60px; height: 60px; font-size: 1rem; flex-shrink: 0; }
    .timeline-item .content { width: calc(100% - 80px); }
    .form-grid { grid-template-columns: 1fr; }
    .full-width { grid-column: auto; }
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }
.delay-3 { animation-delay: 0.9s; }

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