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

:root {
    --deep-blue: #1a2332;
    --pearl-white: #f8f9fa;
    --golden-orange: #ff9f43;
    --fog-gray: #a4b0be;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    color: #2c3e50;
    line-height: 1.6;
}

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 159, 67, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 159, 67, 0.5);
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 35, 50, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(26, 35, 50, 0.95);
}

.navbar-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
    font-weight: 700;
    font-size: 18px;
    transition: transform 0.3s ease;
}

.navbar-logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--golden-orange), #ff6b35);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.navbar-nav {
    display: flex;
    gap: 8px;
    list-style: none;
}

.navbar-nav a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.navbar-nav a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--golden-orange), #ff6b35);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.navbar-nav a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.navbar-nav a:hover::after {
    width: 60%;
}

.navbar-nav a.active {
    color: var(--golden-orange);
}

.main-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 100px 20px 40px;
    min-height: calc(100vh - 80px);
}

.banner {
    background: linear-gradient(135deg, rgba(26, 35, 50, 0.95), rgba(26, 35, 50, 0.85));
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 60px 40px;
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 159, 67, 0.1) 0%, transparent 60%);
    animation: float 6s ease-in-out infinite;
}

.banner h1 {
    font-size: 42px;
    color: white;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.banner p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    position: relative;
    z-index: 1;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
    padding: 24px 30px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.category-title .decorator {
    width: 6px;
    height: 40px;
    background: linear-gradient(180deg, var(--golden-orange), #ff6b35);
    border-radius: 3px;
}

.category-title h2 {
    font-size: 28px;
    color: var(--deep-blue);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.item-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
}

.item-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
    border-color: var(--golden-orange);
}

.item-card .card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, #e8ecf1, #d4d9e0);
}

.item-card .card-content {
    padding: 20px;
}

.item-card .card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-blue);
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-card .card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-card .card-author {
    font-size: 13px;
    color: var(--fog-gray);
}

.item-card .card-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--golden-orange);
}

.item-card-horizontal {
    display: flex;
    flex-direction: row;
}

.item-card-horizontal .card-image {
    width: 200px;
    height: 160px;
    flex-shrink: 0;
}

.item-card-horizontal .card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.detail-image-wrapper {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.detail-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 16px;
    background: linear-gradient(135deg, #e8ecf1, #d4d9e0);
}

.detail-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.detail-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--deep-blue);
}

.detail-price {
    font-size: 32px;
    font-weight: 700;
    color: var(--golden-orange);
}

.detail-section {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.detail-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--deep-blue);
    margin-bottom: 12px;
}

.detail-description {
    color: #5a6c7d;
    line-height: 1.8;
    text-indent: 2em;
}

.detail-author {
    color: var(--fog-gray);
    font-size: 14px;
}

.contact-btn {
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--golden-orange), #ff6b35);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(255, 159, 67, 0.3);
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 159, 67, 0.4);
}

.contact-btn.animate {
    animation: glow 2s ease-in-out infinite;
}

.phone-number {
    display: none;
    text-align: center;
    padding: 20px;
    background: rgba(26, 35, 50, 0.9);
    border-radius: 12px;
    margin-top: 16px;
    animation: slideDown 0.4s ease;
}

.phone-number.show {
    display: block;
}

.phone-number span {
    font-size: 24px;
    font-weight: 700;
    color: var(--golden-orange);
    letter-spacing: 2px;
}

.form-container {
    max-width: 500px;
    margin: 0 auto;
}

.form-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    border-radius: 28px;
    padding: 48px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.form-title {
    text-align: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--deep-blue);
    margin-bottom: 36px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--deep-blue);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid rgba(164, 176, 190, 0.3);
    border-radius: 12px;
    font-size: 15px;
    background: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--golden-orange);
    box-shadow: 0 0 0 4px rgba(255, 159, 67, 0.1);
}

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

.price-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(255, 159, 67, 0.1), rgba(255, 107, 53, 0.1));
    border: 2px solid var(--golden-orange);
    padding: 12px 24px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.price-tag .label {
    font-size: 14px;
    color: var(--deep-blue);
}

.price-tag .price {
    font-size: 22px;
    font-weight: 700;
    color: var(--golden-orange);
}

.submit-btn {
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--golden-orange), #ff6b35);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(255, 159, 67, 0.3);
}

.submit-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 28px rgba(255, 159, 67, 0.4);
}

.form-link {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--fog-gray);
}

.form-link a {
    color: var(--golden-orange);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.form-link a:hover {
    color: #ff6b35;
}

.footer {
    background: linear-gradient(135deg, var(--deep-blue), #0f141c);
    padding: 32px 20px;
    text-align: center;
    margin-top: 60px;
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
}

.footer-divider {
    width: 100px;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 auto 20px;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-company {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 8px;
}

@media (max-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .detail-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 0 16px;
    }
    
    .navbar-nav {
        gap: 4px;
    }
    
    .navbar-nav a {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .item-card-horizontal {
        flex-direction: column;
    }
    
    .item-card-horizontal .card-image {
        width: 100%;
        height: 200px;
    }
    
    .banner h1 {
        font-size: 32px;
    }
    
    .form-card {
        padding: 32px 24px;
    }
    
    .main-container {
        padding: 90px 16px 30px;
    }
}