* {margin:0;padding:0;box-sizing:border-box;}:root {--primary-color:#4361ee;--primary-dark:#3a56d4;--secondary-color:#7209b7;--accent-color:#f72585;--text-primary:#333333;--text-secondary:#666666;--text-light:#888888;--bg-light:#f8f9fa;--bg-white:#ffffff;--border-color:#e0e0e0;--shadow-sm:0 2px 8px rgba(0, 0, 0, 0.08);--shadow-md:0 4px 12px rgba(0, 0, 0, 0.12);--shadow-lg:0 8px 24px rgba(0, 0, 0, 0.16);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--spacing-xs:8px;--spacing-sm:16px;--spacing-md:24px;--spacing-lg:32px;--spacing-xl:48px;}body {font-family:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;color:var(--text-primary);line-height:1.6;background-color:var(--bg-white);}.container {max-width:1200px;margin:0 auto;padding:0 var(--spacing-md);}.btn {display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:16px;text-decoration:none;cursor:pointer;border:none;transition:all 0.3s ease;}.btn-primary {background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));color:white;box-shadow:var(--shadow-sm);}.btn-primary:hover {transform:translateY(-2px);box-shadow:var(--shadow-md);}.btn-secondary {background:var(--bg-white);color:var(--primary-color);border:2px solid var(--primary-color);}.btn-secondary:hover {background:var(--primary-color);color:white;}.navbar {position:fixed;top:0;left:0;right:0;background:var(--bg-white);box-shadow:var(--shadow-sm);z-index:1000;padding:var(--spacing-sm) 0;}.navbar .container {display:flex;justify-content:space-between;align-items:center;}.nav-brand {display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--primary-color);}.nav-brand i {font-size:24px;}.nav-toggle {display:none;background:none;border:none;font-size:24px;color:var(--text-primary);cursor:pointer;}.nav-menu {display:flex;list-style:none;gap:var(--spacing-lg);align-items:center;}.nav-link {text-decoration:none;color:var(--text-primary);font-weight:500;transition:color 0.3s;padding:8px 0;position:relative;}.nav-link:hover,.nav-link.active {color:var(--primary-color);}.nav-link.active::after {content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--primary-color);}.nav-link.consult-btn {background:var(--primary-color);color:white;padding:8px 16px;border-radius:var(--radius-sm);}.nav-link.consult-btn:hover {background:var(--primary-dark);}.hero {padding:120px 0 80px;background:linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);margin-top:60px;}.hero .container {display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-xl);align-items:center;}.hero-title {font-size:48px;font-weight:800;line-height:1.2;margin-bottom:var(--spacing-sm);background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}.hero-subtitle {font-size:20px;color:var(--text-secondary);margin-bottom:var(--spacing-md);}.hero-description {font-size:18px;color:var(--text-light);margin-bottom:var(--spacing-lg);line-height:1.7;}.hero-buttons {display:flex;gap:var(--spacing-md);}.tech-icons {display:grid;grid-template-columns:repeat(2, 1fr);gap:var(--spacing-lg);}.tech-icon {width:120px;height:120px;background:white;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:48px;color:var(--primary-color);box-shadow:var(--shadow-lg);transition:transform 0.3s;}.tech-icon:hover {transform:translateY(-5px);}.services {padding:var(--spacing-xl) 0;background:var(--bg-white);}.section-header {text-align:center;margin-bottom:var(--spacing-xl);}.section-title {font-size:36px;font-weight:700;margin-bottom:var(--spacing-sm);color:var(--text-primary);}.section-subtitle {font-size:18px;color:var(--text-light);max-width:600px;margin:0 auto;}.services-grid {display:grid;grid-template-columns:repeat(auto-fit, minmax(300px, 1fr));gap:var(--spacing-lg);}.service-card {background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-md);transition:transform 0.3s, box-shadow 0.3s;position:relative;border:1px solid var(--border-color);}.service-card:hover {transform:translateY(-8px);box-shadow:var(--shadow-lg);}.service-card.featured {border:2px solid var(--primary-color);}.service-badge {position:absolute;top:-12px;right:20px;background:var(--accent-color);color:white;padding:4px 12px;border-radius:20px;font-size:14px;font-weight:600;}.service-icon {width:80px;height:80px;background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:var(--spacing-md);font-size:32px;color:white;}.service-title {font-size:24px;font-weight:600;margin-bottom:var(--spacing-md);color:var(--text-primary);}.service-features {list-style:none;margin-bottom:var(--spacing-lg);}.service-features li {display:flex;align-items:center;gap:8px;margin-bottom:8px;color:var(--text-secondary);}.service-features i {color:var(--primary-color);}.service-price {display:flex;align-items:baseline;gap:8px;}.price {font-size:28px;font-weight:700;color:var(--primary-color);}.price-note {font-size:14px;color:var(--text-light);}.portfolio {padding:var(--spacing-xl) 0;background:var(--bg-light);}.portfolio-grid {display:grid;grid-template-columns:repeat(auto-fit, minmax(300px, 1fr));gap:var(--spacing-lg);}.portfolio-card {background:var(--bg-white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:transform 0.3s;}.portfolio-card:hover {transform:translateY(-5px);}.portfolio-image {height:200px;background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));display:flex;align-items:center;justify-content:center;font-size:64px;color:white;}.portfolio-content {padding:var(--spacing-lg);}.portfolio-content h3 {font-size:20px;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--text-primary);}.portfolio-content p {color:var(--text-secondary);margin-bottom:var(--spacing-md);}.portfolio-tags {display:flex;gap:8px;flex-wrap:wrap;}.tag {background:var(--bg-light);color:var(--text-secondary);padding:4px 12px;border-radius:20px;font-size:14px;}.about {padding:var(--spacing-xl) 0;background:var(--bg-white);}.about-description {font-size:18px;color:var(--text-secondary);max-width:800px;margin:0 auto var(--spacing-xl);text-align:center;line-height:1.7;}.stats {display:grid;grid-template-columns:repeat(auto-fit, minmax(150px, 1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);}.stat-item {text-align:center;padding:var(--spacing-md);}.stat-number {font-size:36px;font-weight:700;color:var(--primary-color);margin-bottom:4px;}.stat-label {color:var(--text-secondary);font-size:14px;}.features {display:grid;grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));gap:var(--spacing-lg);}.feature {text-align:center;padding:var(--spacing-md);}.feature i {font-size:40px;color:var(--primary-color);margin-bottom:var(--spacing-sm);}.feature h4 {font-size:18px;font-weight:600;margin-bottom:8px;color:var(--text-primary);}.feature p {color:var(--text-light);font-size:14px;}.contact {padding:var(--spacing-xl) 0;background:var(--bg-light);}.contact-content {display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-xl);}.contact-info {display:grid;gap:var(--spacing-lg);}.contact-item {display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-white);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);}.contact-item i {font-size:24px;color:var(--primary-color);margin-top:4px;}.contact-item h4 {font-size:18px;font-weight:600;margin-bottom:4px;color:var(--text-primary);}.contact-item p {color:var(--text-secondary);margin-bottom:4px;}.contact-note {font-size:14px;color:var(--text-light);}.contact-form {background:var(--bg-white);padding:var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);}.contact-form h3 {font-size:24px;font-weight:600;margin-bottom:var(--spacing-lg);color:var(--text-primary);}.form-group {margin-bottom:var(--spacing-md);}.form-group input,.form-group select,.form-group textarea {width:100%;padding:12px 16px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-family:inherit;font-size:16px;transition:border-color 0.3s;}.form-group input:focus,.form-group select:focus,.form-group textarea:focus {outline:none;border-color:var(--primary-color);}.form-group textarea {resize:vertical;}.footer {background:var(--text-primary);color:white;padding:var(--spacing-xl) 0;text-align:center;}.footer-brand {display:flex;align-items:center;justify-content:center;gap:10px;font-size:24px;font-weight:700;margin-bottom:var(--spacing-md);}.footer-brand i {font-size:28px;}.footer-description {max-width:600px;margin:0 auto var(--spacing-lg);color:rgba(255, 255, 255, 0.8);font-size:16px;}.footer-social {display:flex;justify-content:center;gap:var(--spacing-md);margin-bottom:var(--spacing-lg);}.social-link {display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background:rgba(255, 255, 255, 0.1);border-radius:50%;color:white;font-size:18px;transition:background 0.3s;}.social-link:hover {background:var(--primary-color);}.footer-copyright {color:rgba(255, 255, 255, 0.6);font-size:14px;}.back-to-top {position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--primary-color);color:white;border:none;border-radius:50%;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:all 0.3s;z-index:1000;box-shadow:var(--shadow-md);}.back-to-top.visible {opacity:1;visibility:visible;}.back-to-top:hover {background:var(--primary-dark);transform:translateY(-3px);}.toast {position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);background:var(--primary-color);color:white;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:1001;transition:transform 0.3s;opacity:0;visibility:hidden;}.toast.show {transform:translateX(-50%) translateY(0);opacity:1;visibility:visible;}.toast-content {display:flex;align-items:center;gap:10px;}.toast-content i {font-size:20px;}@media (max-width:992px) {.hero .container {grid-template-columns:1fr;text-align:center;} .tech-icons {justify-content:center;margin-top:var(--spacing-lg);} .contact-content {grid-template-columns:1fr;}}@media (max-width:768px) {body {font-size:16px;} h1 {font-size:32px;} h2 {font-size:28px;} h3 {font-size:24px;} .btn, button, input[type="submit"], input[type="button"] {min-height:44px;padding:12px 20px;} input, textarea, select {font-size:16px;padding:10px;} .nav-toggle {display:block;} .nav-menu {position:fixed;top:70px;left:0;right:0;background:var(--bg-white);flex-direction:column;padding:var(--spacing-lg);box-shadow:var(--shadow-md);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all 0.3s;z-index:999;} .nav-menu.active {transform:translateY(0);opacity:1;visibility:visible;} .hero-title {font-size:36px;} .hero-subtitle {font-size:18px;} .hero-buttons {flex-direction:column;align-items:center;} .section-title {font-size:28px;} .services-grid, .portfolio-grid {grid-template-columns:1fr;} .features {grid-template-columns:1fr;} .stats {grid-template-columns:repeat(2, 1fr);}}@media (max-width:480px) {body {font-size:16px;-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;-ms-text-size-adjust:100%;text-size-adjust:100%;} h1 {font-size:28px;} h2 {font-size:24px;} h3 {font-size:20px;} .hero {padding:100px 0 60px;} .hero-title {font-size:28px;} .tech-icon {width:80px;height:80px;font-size:32px;} .section-title {font-size:24px;} .btn, button, input[type="submit"], input[type="button"] {min-height:44px;min-width:44px;padding:12px 24px;font-size:16px;} input, textarea, select {font-size:16px;padding:12px;min-height:44px;} .btn {width:100%;justify-content:center;} .stats {grid-template-columns:1fr;} body {-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';}}.hidden {display:none !important;}@keyframes fadeIn {from {opacity:0;transform:translateY(20px);} to {opacity:1;transform:translateY(0);}}.fade-in {animation:fadeIn 0.6s ease forwards;}.advantages {padding:var(--spacing-xl) 0;background:var(--bg-light);}.advantages-grid {display:grid;grid-template-columns:repeat(auto-fit, minmax(250px, 1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);}.advantage-card {background:var(--bg-white);border-radius:var(--radius-lg);padding:var(--spacing-lg);text-align:center;box-shadow:var(--shadow-md);transition:transform 0.3s;}.advantage-card:hover {transform:translateY(-5px);}.advantage-icon {width:60px;height:60px;background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto var(--spacing-md);font-size:24px;color:white;}.advantage-card h3 {font-size:18px;font-weight:600;margin-bottom:var(--spacing-sm);color:var(--text-primary);}.advantage-card p {color:var(--text-secondary);font-size:14px;line-height:1.5;}.enterprise-service {background:linear-gradient(135deg, var(--primary-color), var(--secondary-color));border-radius:var(--radius-lg);padding:var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-lg);color:white;}.enterprise-icon {font-size:48px;flex-shrink:0;}.enterprise-content {flex:1;}.enterprise-content h3 {font-size:24px;font-weight:700;margin-bottom:var(--spacing-md);}.enterprise-content ul {list-style:none;margin-bottom:var(--spacing-md);}.enterprise-content li {margin-bottom:8px;display:flex;align-items:center;gap:8px;}.enterprise-content li:before {content:"✓";font-weight:bold;}.enterprise-note {font-size:16px;font-weight:600;background:rgba(255, 255, 255, 0.1);padding:var(--spacing-sm);border-radius:var(--radius-sm);text-align:center;}.hero-features {display:flex;flex-wrap:wrap;gap:10px;margin-bottom:var(--spacing-lg);}.feature-badge {background:rgba(255, 255, 255, 0.2);border:1px solid rgba(255, 255, 255, 0.3);padding:6px 12px;border-radius:20px;font-size:14px;display:flex;align-items:center;gap:6px;backdrop-filter:blur(10px);}.service-coverage {background:white;border-radius:var(--radius-lg);padding:var(--spacing-lg);box-shadow:var(--shadow-lg);}.service-coverage h3 {font-size:20px;font-weight:600;margin-bottom:var(--spacing-md);color:var(--text-primary);display:flex;align-items:center;gap:8px;}.coverage-grid {display:grid;grid-template-columns:repeat(3, 1fr);gap:10px;margin-bottom:var(--spacing-sm);}.coverage-city {background:var(--bg-light);padding:8px 12px;border-radius:var(--radius-sm);text-align:center;font-size:14px;font-weight:500;color:var(--text-secondary);transition:all 0.3s;}.coverage-city:hover {background:var(--primary-color);color:white;transform:translateY(-2px);}.coverage-note {font-size:14px;color:var(--text-light);text-align:center;margin-top:var(--spacing-sm);}@media (max-width:768px) {.hero-features {justify-content:center;} .coverage-grid {grid-template-columns:repeat(2, 1fr);} .enterprise-service {flex-direction:column;text-align:center;} .enterprise-icon {margin-bottom:var(--spacing-md);}}@media (max-width:480px) {.coverage-grid {grid-template-columns:1fr;} .advantages-grid {grid-template-columns:1fr;}}.footer-icp {margin-bottom:var(--spacing-sm);}.footer-icp a {color:rgba(255, 255, 255, 0.8);text-decoration:none;font-size:14px;transition:color 0.3s;}.footer-icp a:hover {color:white;text-decoration:underline;}.footer-links {display:flex;justify-content:center;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg);flex-wrap:wrap;}.footer-link {color:rgba(255, 255, 255, 0.8);text-decoration:none;font-size:14px;transition:color 0.3s;padding:5px 10px;}.footer-link:hover {color:white;text-decoration:underline;}.personal-statement {margin-bottom:var(--spacing-md);padding:var(--spacing-sm);background:rgba(255, 255, 255, 0.1);border-radius:var(--radius-sm);font-size:13px;line-height:1.5;}.personal-statement strong {color:white;}.personal-statement p {margin-bottom:5px;}.contact-notice {background:linear-gradient(135deg, #f8f9fa, #e9ecef);border-radius:var(--radius-lg);padding:var(--spacing-xl);text-align:center;border:2px solid #dee2e6;margin-top:var(--spacing-lg);}.contact-notice h3 {color:var(--primary-color);margin-bottom:var(--spacing-md);font-size:24px;}.notice-content {max-width:600px;margin:0 auto;}.notice-content p {margin-bottom:var(--spacing-md);color:var(--text-secondary);font-size:16px;}.contact-methods {list-style:none;text-align:left;margin:var(--spacing-lg) 0;padding:0;}.contact-methods li {padding:var(--spacing-sm) 0;border-bottom:1px solid #e9ecef;display:flex;align-items:center;font-size:16px;}.contact-methods li:last-child {border-bottom:none;}.contact-methods i {color:var(--primary-color);margin-right:var(--spacing-sm);width:24px;text-align:center;font-size:18px;}.contact-methods strong {color:var(--text-primary);margin-right:var(--spacing-xs);}.notice-tip {background:#e8f4fd;color:#004085;padding:var(--spacing-sm);border-radius:var(--radius-sm);border-left:4px solid var(--primary-color);font-size:15px;margin-top:var(--spacing-lg);}@media (max-width:768px) {.contact-notice {padding:var(--spacing-lg);margin-top:var(--spacing-md);} .contact-notice h3 {font-size:20px;} .contact-methods li {font-size:15px;padding:10px 0;} .notice-content p {font-size:15px;}}