:root {
    --qt-primary: #0A6E5C;
    --qt-secondary: #14A890;
    --qt-accent: #D4A843;
    --qt-text: #1A2332;
    --qt-text-secondary: #5A6B7F;
    --qt-bg: #F8F9FA;
    --qt-bg-dark: #0F1923;
    --qt-border: #D1D9E0;
    --qt-shadow: rgba(10, 110, 92, 0.1);
    --qt-gradient-start: #0A6E5C;
    --qt-gradient-end: #14A890;
    --qt-jelly: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --qt-metal-light: #e6e9f0;
    --qt-metal-dark: #808080;
}

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

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

a {
    text-decoration: none;
    color: var(--qt-primary);
    transition: color 0.3s var(--qt-jelly);
}

a:hover {
    color: var(--qt-secondary);
}

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

.qt-header-main {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.4s var(--qt-jelly);
}

.qt-header-scrolled {
    box-shadow: 0 4px 30px var(--qt-shadow);
}

.qt-header-scrolled .qt-navbar-main {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
}

.qt-header-top-bar {
    background: var(--qt-bg-dark);
    padding: 8px 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
}

.qt-top-info {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.qt-top-info i {
    color: var(--qt-accent);
}

.qt-navbar-main {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    border-bottom: 1px solid var(--qt-border);
    transition: all 0.3s ease;
}

.qt-navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.qt-brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qt-brand-logo img {
    height: 42px;
    width: auto;
}

.qt-brand-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--qt-primary);
    letter-spacing: 0.02em;
}

.qt-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.qt-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--qt-text);
    border-radius: 2px;
    transition: all 0.3s var(--qt-jelly);
}

.qt-nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 4px;
}

.qt-nav-item {
    position: relative;
}

.qt-nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--qt-text);
    border-radius: 8px;
    transition: all 0.3s var(--qt-jelly);
}

.qt-nav-link:hover,
.qt-nav-item.active .qt-nav-link {
    color: var(--qt-primary);
    background: rgba(10, 110, 92, 0.06);
}

.qt-nav-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s var(--qt-jelly);
}

.qt-nav-item:hover .qt-nav-arrow {
    transform: rotate(180deg);
}

.qt-megamenu-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: 100%;
    max-width: 900px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--qt-jelly);
    border: 1px solid var(--qt-border);
    z-index: 100;
}

.qt-megamenu-dropdown.qt-mega-visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.qt-megamenu-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.qt-megamenu-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--qt-primary);
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--qt-border);
}

.qt-megamenu-link {
    display: block;
    color: var(--qt-text-secondary);
    font-size: 0.875rem;
    padding: 4px 0;
    transition: all 0.2s ease;
}

.qt-megamenu-link:hover {
    color: var(--qt-primary);
    padding-left: 6px;
}

.qt-megamenu-img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-top: 0.8rem;
    transition: transform 0.3s var(--qt-jelly);
}

.qt-megamenu-img:hover {
    transform: scale(1.05);
}

.qt-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.qt-btn-estimate {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--qt-gradient-start), var(--qt-gradient-end));
    color: #fff;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.4s var(--qt-jelly);
    border: none;
}

.qt-btn-estimate:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px var(--qt-shadow);
    color: #fff;
}

.qt-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--qt-gradient-start), var(--qt-gradient-end));
    color: #fff;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.4s var(--qt-jelly);
}

.qt-btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px var(--qt-shadow);
    color: #fff;
}

.qt-btn-primary:active {
    transform: scale(0.95);
}

.qt-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: transparent;
    color: var(--qt-primary);
    border: 2px solid var(--qt-primary);
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s var(--qt-jelly);
}

.qt-btn-outline:hover {
    background: var(--qt-primary);
    color: #fff;
    transform: scale(1.05);
}

.qt-btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.qt-btn-jelly {
    transition: all 0.4s var(--qt-jelly);
}

.qt-metal-card {
    position: relative;
    background: linear-gradient(145deg, #ffffff, var(--qt-metal-light));
    border: 1px solid transparent;
    background-clip: padding-box;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s var(--qt-jelly);
}

.qt-metal-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    padding: 2px;
    background: linear-gradient(135deg, #c0c0c0, #fff, #808080, #fff, #c0c0c0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.qt-metal-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
    pointer-events: none;
}

.qt-metal-card:hover .qt-metal-shine {
    left: 100%;
}

.qt-metal-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px var(--qt-shadow);
}

.qt-section-header {
    text-align: center;
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--qt-jelly);
}

.qt-section-header.qt-revealed {
    opacity: 1;
    transform: translateY(0);
}

.qt-section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--qt-text);
    margin-top: 1rem;
    letter-spacing: -0.02em;
}

.qt-text-accent {
    color: var(--qt-accent);
}

.qt-section-desc {
    font-size: 1.1rem;
    color: var(--qt-text-secondary);
    max-width: 600px;
    margin: 1rem auto 0;
}

.qt-wave-text-svg {
    width: 100%;
    max-width: 600px;
    height: 60px;
    margin: 0 auto;
    display: block;
}

.qt-wave-small {
    max-width: 400px;
    height: 50px;
}

.qt-wave-text {
    font-size: 20px;
    font-weight: 700;
    fill: var(--qt-primary);
    letter-spacing: 2px;
}

section {
    padding: 15vh 0;
    min-height: 70vh;
}

.qt-hero-section {
    padding-top: 20vh;
    min-height: 100vh;
    background: linear-gradient(180deg, rgba(10, 110, 92, 0.03) 0%, var(--qt-bg) 100%);
    position: relative;
}

.qt-hero-terminal {
    position: absolute;
    top: 12vh;
    right: 5%;
    width: 380px;
    background: #0a0a0a;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    z-index: 10;
    transition: all 0.4s var(--qt-jelly);
}

.qt-terminal-closed {
    transform: scale(0.1);
    opacity: 0;
    pointer-events: none;
}

.qt-terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #1a1a1a;
}

.qt-terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.qt-dot-red { background: #ff5f57; }
.qt-dot-yellow { background: #febc2e; }
.qt-dot-green { background: #28c840; }

.qt-terminal-title {
    flex: 1;
    text-align: center;
    font-size: 0.75rem;
    color: #888;
    font-family: monospace;
}

.qt-terminal-close {
    background: none;
    border: none;
    color: #888;
    cursor: pointer;
    font-size: 1rem;
}

.qt-terminal-body {
    padding: 16px;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.8;
}

.qt-terminal-line {
    color: #22c55e;
    margin-bottom: 4px;
}

.qt-prompt {
    color: #22c55e;
    font-weight: bold;
}

.qt-cmd {
    color: #a0e8af;
}

.qt-success {
    color: #22c55e;
    font-weight: bold;
}

.qt-cursor {
    animation: qtBlink 1s step-end infinite;
    color: #22c55e;
}

@keyframes qtBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.qt-hero-title {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.qt-hero-subtitle {
    font-size: 1.15rem;
    color: var(--qt-text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    max-width: 540px;
}

.qt-hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

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

.qt-stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--qt-primary);
    line-height: 1;
}

.qt-stat-unit {
    font-size: 1.2rem;
    color: var(--qt-accent);
    font-weight: 700;
}

.qt-stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--qt-text-secondary);
    margin-top: 4px;
}

.qt-hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.qt-hero-visual {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.qt-hero-card {
    padding: 2rem;
    text-align: center;
}

.qt-hero-card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--qt-gradient-start), var(--qt-gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: #fff;
}

.qt-hero-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.qt-hero-card p {
    font-size: 0.9rem;
    color: var(--qt-text-secondary);
}

.qt-card-delay {
    animation-delay: 0.2s;
}

.qt-timeline-section {
    background: #fff;
}

.qt-timeline-wrapper {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.qt-timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--qt-border);
    transform: translateX(-50%);
}

.qt-timeline-item {
    position: relative;
    display: flex;
    margin-bottom: 4rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--qt-jelly);
}

.qt-timeline-item.qt-tl-visible {
    opacity: 1;
    transform: translateY(0);
}

.qt-tl-left {
    justify-content: flex-start;
    padding-right: 50%;
}

.qt-tl-right {
    justify-content: flex-end;
    padding-left: 50%;
}

.qt-timeline-node {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 2;
}

.qt-node-dot {
    width: 16px;
    height: 16px;
    background: var(--qt-primary);
    border: 3px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(10, 110, 92, 0.2);
    margin: 0 auto;
    transition: all 0.4s var(--qt-jelly);
}

.qt-tl-visible .qt-node-dot {
    transform: scale(1);
}

.qt-node-year {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--qt-primary);
    margin-top: 8px;
    white-space: nowrap;
}

.qt-timeline-content {
    padding: 2rem;
    margin: 0 2rem;
    max-width: 380px;
}

.qt-timeline-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--qt-text);
}

.qt-timeline-content p {
    font-size: 0.9rem;
    color: var(--qt-text-secondary);
    margin-bottom: 1rem;
}

.qt-tl-img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 8px;
}

.qt-physics-section {
    background: linear-gradient(180deg, var(--qt-bg) 0%, #fff 100%);
}

.qt-physics-container {
    position: relative;
    width: 100%;
    height: 450px;
    background: linear-gradient(145deg, #f0f4f8, #e8ecf0);
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--qt-border);
}

.qt-physics-container canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.qt-physics-fallback {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 2rem;
    height: 100%;
    align-content: center;
}

.qt-fallback-item {
    padding: 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.qt-fallback-item i {
    font-size: 2rem;
    color: var(--qt-primary);
}

.qt-fallback-item span {
    font-size: 0.85rem;
    font-weight: 600;
}

.qt-services-section {
    background: #fff;
}

.qt-service-card {
    padding: 2.5rem 1.5rem;
    text-align: center;
    height: 100%;
}

.qt-service-step {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(10, 110, 92, 0.08);
    position: absolute;
    top: 10px;
    right: 20px;
}

.qt-service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--qt-gradient-start), var(--qt-gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.8rem;
    color: #fff;
}

.qt-service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.qt-service-card p {
    font-size: 0.9rem;
    color: var(--qt-text-secondary);
}

.qt-history-section {
    background: var(--qt-bg-dark);
    color: #fff;
    overflow: hidden;
}

.qt-history-section .qt-section-title {
    color: #fff;
}

.qt-history-section .qt-section-desc {
    color: rgba(255, 255, 255, 0.7);
}

.qt-history-retrospective {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    height: 500px;
}

.qt-history-track {
    display: flex;
    height: 100%;
    transition: transform 0.8s var(--qt-jelly);
}

.qt-history-scene {
    min-width: 100%;
    height: 100%;
    position: relative;
}

.qt-scene-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: sepia(30%);
}

.qt-scene-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 25, 35, 0.8), rgba(10, 110, 92, 0.4));
}

.qt-scene-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    padding: 2rem;
}

.qt-scene-year {
    font-size: 4rem;
    font-weight: 900;
    color: var(--qt-accent);
    line-height: 1;
    margin-bottom: 1rem;
}

.qt-scene-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.qt-scene-content p {
    font-size: 1.1rem;
    max-width: 500px;
    color: rgba(255, 255, 255, 0.85);
}

.qt-history-timeline-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    padding: 0 2rem;
}

.qt-history-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--qt-accent);
    transition: width 0.5s var(--qt-jelly);
}

.qt-history-dots {
    display: flex;
    gap: 1rem;
    margin: 0 auto;
}

.qt-h-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s var(--qt-jelly);
}

.qt-h-dot.active {
    background: var(--qt-accent);
    transform: scale(1.3);
}

.qt-testimonials-section {
    background: #fff;
}

.qt-testimonials-carousel {
    position: relative;
    overflow: hidden;
}

.qt-testimonial-track {
    display: flex;
    transition: transform 0.5s var(--qt-jelly);
}

.qt-testimonial-card {
    min-width: 100%;
    padding: 3rem;
    text-align: center;
}

.qt-testimonial-quote {
    font-size: 4rem;
    color: rgba(10, 110, 92, 0.15);
    line-height: 1;
    margin-bottom: 1rem;
}

.qt-testimonial-text {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--qt-text);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.qt-testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.qt-author-avatar {
    font-size: 2.5rem;
    color: var(--qt-primary);
}

.qt-author-info {
    text-align: left;
}

.qt-author-info strong {
    display: block;
    font-size: 1rem;
}

.qt-author-info span {
    font-size: 0.85rem;
    color: var(--qt-text-secondary);
}

.qt-carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.qt-carousel-prev,
.qt-carousel-next {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--qt-border);
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s var(--qt-jelly);
    color: var(--qt-text);
}

.qt-carousel-prev:hover,
.qt-carousel-next:hover {
    border-color: var(--qt-primary);
    color: var(--qt-primary);
    transform: scale(1.1);
}

.qt-carousel-dots {
    display: flex;
    gap: 8px;
}

.qt-carousel-dots .qt-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--qt-border);
    cursor: pointer;
    transition: all 0.3s var(--qt-jelly);
}

.qt-carousel-dots .qt-dot.active {
    background: var(--qt-primary);
    transform: scale(1.3);
}

.qt-partners-section {
    background: var(--qt-bg);
}

.qt-partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 2rem;
}

.qt-partner-card {
    padding: 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.qt-partner-logo {
    max-height: 48px;
    object-fit: contain;
    filter: grayscale(100%);
    transition: all 0.3s var(--qt-jelly);
}

.qt-partner-card:hover .qt-partner-logo {
    filter: grayscale(0);
}

.qt-partner-name {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
    font-weight: 500;
}

.qt-news-section {
    background: #fff;
}

.qt-news-card {
    height: 100%;
    overflow: hidden;
}

.qt-news-img-wrap {
    overflow: hidden;
    border-radius: 16px 16px 0 0;
}

.qt-news-img-wrap img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.4s var(--qt-jelly);
}

.qt-news-card:hover .qt-news-img-wrap img {
    transform: scale(1.05);
}

.qt-news-body {
    padding: 1.5rem;
}

.qt-news-body time {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
}

.qt-news-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0.5rem 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.qt-news-body p {
    font-size: 0.85rem;
    color: var(--qt-text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.qt-news-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--qt-primary);
    margin-top: 1rem;
}

.qt-news-link:hover {
    gap: 8px;
}

.qt-city-section {
    background: var(--qt-bg);
}

.qt-city-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.8rem;
}

.qt-city-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem;
    background: #fff;
    border: 1px solid var(--qt-border);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s var(--qt-jelly);
}

.qt-city-card:hover {
    border-color: var(--qt-primary);
    background: rgba(10, 110, 92, 0.05);
    transform: translateY(-3px);
}

.qt-city-card h5 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--qt-text);
    margin: 0;
}

.qt-cta-section {
    padding: 10vh 0;
    min-height: auto;
}

.qt-cta-card {
    padding: 4rem 3rem;
    background: linear-gradient(135deg, var(--qt-gradient-start), var(--qt-gradient-end));
    text-align: center;
}

.qt-cta-card::before {
    display: none;
}

.qt-cta-card h2 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.5rem;
}

.qt-cta-card p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

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

.qt-cta-card .qt-btn-outline {
    border-color: #fff;
    color: #fff;
}

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

.qt-page-banner {
    padding: 18vh 0 8vh;
    background: linear-gradient(135deg, rgba(10, 110, 92, 0.05), rgba(20, 168, 144, 0.05));
    text-align: center;
}

.qt-breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.qt-breadcrumb a {
    color: var(--qt-text-secondary);
}

.qt-breadcrumb .active {
    color: var(--qt-primary);
}

.qt-page-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.qt-page-desc {
    color: var(--qt-text-secondary);
    font-size: 1.05rem;
}

.qt-news-list-section {
    padding: 10vh 0;
    min-height: auto;
}

.qt-news-list-item {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.qt-news-list-img img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 12px;
}

.qt-news-list-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.qt-news-list-body h3 a {
    color: var(--qt-text);
}

.qt-news-list-body h3 a:hover {
    color: var(--qt-primary);
}

.qt-news-list-body p {
    font-size: 0.9rem;
    color: var(--qt-text-secondary);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.qt-news-list-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.qt-news-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.qt-tag {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(10, 110, 92, 0.08);
    color: var(--qt-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.qt-news-date {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
}

.qt-sidebar {
    position: sticky;
    top: 120px;
}

.qt-sidebar-widget {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.qt-sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--qt-border);
}

.qt-sidebar-recommend {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.qt-sidebar-rec-item {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.qt-sidebar-rec-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.qt-sidebar-rec-item span {
    font-size: 0.85rem;
    color: var(--qt-text);
    line-height: 1.4;
}

.qt-sidebar-rec-item:hover span {
    color: var(--qt-primary);
}

.qt-sidebar-contact p {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.qt-sidebar-contact i {
    color: var(--qt-primary);
}

.qt-sidebar-qr {
    width: 120px;
    margin: 1rem auto;
    display: block;
    border-radius: 8px;
}

.qt-detail-section {
    padding: 8vh 0;
    min-height: auto;
}

.qt-detail-article {
    padding: 3rem;
    margin-bottom: 3rem;
}

.qt-detail-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--qt-border);
}

.qt-detail-header h1 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.qt-detail-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.qt-detail-meta span {
    font-size: 0.85rem;
    color: var(--qt-text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.qt-detail-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.qt-detail-content {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--qt-text);
}

.qt-detail-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1rem 0;
}

.qt-detail-content p {
    margin-bottom: 1.2rem;
}

.qt-related-section {
    margin-top: 3rem;
}

.qt-related-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.qt-related-card {
    padding: 1.2rem;
    display: block;
}

.qt-related-card h5 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--qt-text);
    margin-bottom: 0.5rem;
}

.qt-related-card:hover h5 {
    color: var(--qt-primary);
}

.qt-related-date {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
}

.qt-about-intro {
    padding: 10vh 0;
    min-height: auto;
}

.qt-about-text h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.qt-about-text p {
    font-size: 1rem;
    color: var(--qt-text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.qt-about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.qt-highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.qt-highlight-item i {
    font-size: 1.5rem;
    color: var(--qt-primary);
    flex-shrink: 0;
}

.qt-highlight-item strong {
    display: block;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.qt-highlight-item span {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
}

.qt-about-image {
    padding: 0;
    overflow: hidden;
}

.qt-about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
}

.qt-about-values {
    padding: 10vh 0;
    min-height: auto;
    background: #fff;
}

.qt-value-card {
    padding: 2.5rem 1.5rem;
    text-align: center;
    height: 100%;
}

.qt-value-card i {
    font-size: 2.5rem;
    color: var(--qt-primary);
    margin-bottom: 1rem;
}

.qt-value-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.qt-value-card p {
    font-size: 0.9rem;
    color: var(--qt-text-secondary);
}

.qt-about-address {
    padding: 10vh 0;
    min-height: auto;
}

.qt-address-card {
    padding: 3rem;
}

.qt-address-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.qt-address-card p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

.qt-address-card i {
    color: var(--qt-primary);
}

.qt-about-map img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 12px;
}

.qt-contact-section {
    padding: 10vh 0;
    min-height: auto;
}

.qt-contact-info-card {
    padding: 2.5rem;
    height: 100%;
}

.qt-contact-info-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.qt-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.qt-contact-item i {
    font-size: 1.3rem;
    color: var(--qt-primary);
    margin-top: 3px;
}

.qt-contact-item strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.qt-contact-item span {
    font-size: 0.95rem;
    color: var(--qt-text-secondary);
}

.qt-contact-qr {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--qt-border);
}

.qt-qr-img {
    width: 140px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.qt-contact-qr p {
    font-size: 0.85rem;
    color: var(--qt-text-secondary);
}

.qt-contact-form-wrap {
    padding: 2.5rem;
}

.qt-contact-form-wrap h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.qt-form-desc {
    color: var(--qt-text-secondary);
    margin-bottom: 2rem;
}

.qt-form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.qt-required {
    color: #e74c3c;
}

.qt-form-input,
.qt-form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--qt-border);
    border-radius: 10px;
    font-size: 0.95rem;
    transition: all 0.3s var(--qt-jelly);
    background: #fff;
}

.qt-form-input:focus,
.qt-form-textarea:focus {
    outline: none;
    border-color: var(--qt-primary);
    box-shadow: 0 0 0 4px rgba(10, 110, 92, 0.1);
}

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

.qt-btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 1rem;
}

.qt-form-tips {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(10, 110, 92, 0.05);
    border-radius: 8px;
}

.qt-form-tips p {
    font-size: 0.8rem;
    color: var(--qt-text-secondary);
    margin: 0;
}

.qt-form-tips i {
    color: var(--qt-primary);
}

.qt-footer-main {
    position: relative;
}

.qt-footer-wave {
    position: relative;
    margin-bottom: -2px;
}

.qt-footer-wave svg {
    display: block;
    width: 100%;
    height: 80px;
}

.qt-footer-body {
    background: var(--qt-bg-dark);
    padding: 5rem 0 3rem;
    color: rgba(255, 255, 255, 0.8);
}

.qt-footer-logo {
    height: 40px;
    margin-bottom: 1rem;
}

.qt-footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: rgba(255, 255, 255, 0.6);
}

.qt-footer-contact-info p {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.qt-footer-contact-info i {
    color: var(--qt-accent);
}

.qt-footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1.2rem;
}

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

.qt-footer-links li {
    margin-bottom: 0.6rem;
}

.qt-footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

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

.qt-footer-wechat {
    text-align: center;
    margin-bottom: 1.5rem;
}

.qt-footer-qrcode {
    width: 120px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.qt-footer-wechat p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

.qt-friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.qt-friend-links a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.8rem;
    padding: 2px 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.qt-friend-links a:hover {
    color: var(--qt-accent);
    border-color: var(--qt-accent);
}

.qt-footer-bottom {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.2rem 0;
}

.qt-copyright,
.qt-footer-slogan {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
}

.qt-floating-contact {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.qt-float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.4s var(--qt-jelly);
    position: relative;
}

.qt-float-btn:hover {
    transform: scale(1.15);
    color: #fff;
}

.qt-float-phone {
    background: var(--qt-primary);
}

.qt-float-wechat {
    background: #07c160;
}

.qt-float-top {
    background: var(--qt-accent);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.qt-float-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.qt-float-label {
    position: absolute;
    right: 60px;
    background: var(--qt-text);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.qt-float-btn:hover .qt-float-label {
    opacity: 1;
    visibility: visible;
}

.qt-pagination-wrap {
    margin-top: 3rem;
    text-align: center;
}

.qt-main-index,
.qt-main-news,
.qt-main-detail,
.qt-main-about,
.qt-main-contact {
    padding-top: 0;
}

@media (max-width: 991px) {
    .qt-hero-terminal {
        display: none;
    }
    .qt-hero-title {
        font-size: 2.4rem;
    }
    .qt-megamenu-dropdown {
        display: none;
    }
    .qt-timeline-line {
        left: 20px;
    }
    .qt-tl-left,
    .qt-tl-right {
        padding-left: 50px;
        padding-right: 0;
        justify-content: flex-start;
    }
    .qt-timeline-node {
        left: 20px;
    }
    .qt-timeline-content {
        margin: 0;
        max-width: 100%;
    }
    .qt-megamenu-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    section {
        padding: 10vh 0;
        min-height: auto;
    }
    .qt-mobile-toggle {
        display: flex;
    }
    .qt-nav-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        padding: 1rem;
        border-radius: 0 0 16px 16px;
    }
    .qt-nav-list {
        flex-direction: column;
    }
    .qt-nav-link {
        padding: 12px 16px;
    }
    .qt-header-actions {
        margin-top: 1rem;
    }
    .qt-hero-section {
        padding-top: 16vh;
    }
    .qt-hero-title {
        font-size: 1.8rem;
    }
    .qt-hero-stats {
        gap: 1rem;
    }
    .qt-stat-num {
        font-size: 1.8rem;
    }
    .qt-section-title {
        font-size: 1.8rem;
    }
    .qt-physics-container {
        height: 300px;
    }
    .qt-physics-fallback {
        grid-template-columns: repeat(2, 1fr);
    }
    .qt-history-retrospective {
        height: 400px;
    }
    .qt-scene-year {
        font-size: 2.5rem;
    }
    .qt-scene-content h3 {
        font-size: 1.4rem;
    }
    .qt-partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    .qt-city-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }
    .qt-about-highlights {
        grid-template-columns: 1fr;
    }
    .qt-cta-card {
        padding: 2.5rem 1.5rem;
    }
    .qt-cta-card h2 {
        font-size: 1.5rem;
    }
    .qt-detail-article {
        padding: 1.5rem;
    }
    .qt-detail-header h1 {
        font-size: 1.5rem;
    }
    .qt-contact-form-wrap,
    .qt-contact-info-card {
        padding: 1.5rem;
    }
    .qt-floating-contact {
        right: 12px;
        bottom: 20px;
    }
    .qt-float-btn {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .qt-wave-text animate {
        display: none;
    }
}