body {
    margin: 0;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background: var(--main-bg);
    color: var(--main-dark);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.banner{
    width: 100vw;
    height: 90vh;
    background: url(./images/banner.png) no-repeat;
    background-size: cover;
    background-position: center;
}
.navbar {
    background: var(--main-brown);
    box-shadow: 0 2px 8px rgba(160,90,28,0.08);
    opacity: 0.8;
    padding: 0.5em 0;
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-group {
    display: flex;
    align-items: center;
    gap: 0.7em;
}
.logo-img {
    height: 44px;
    width: 44px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(180, 120, 40, 0.10);
    background: #fff7e6;
    border: 2px solid #f7c873;
}
.logo-text {
    color: #a05a1c;
    font-size: 1.7em;
    font-weight: bold;
    letter-spacing: 2px;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 2em;
    margin: 0;
    padding: 0;
}
.nav-links a {
    color: #fffbe9;
    text-decoration: none;
    font-size: 1.1em;
    position: relative;
    transition: color 0.3s;
}
.nav-links a:hover {
    color: var(--main-orange);
}

/* 历史传承区域 */
.history-section {
    background: var(--main-light);
    margin: 2em 0;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(160,90,28,0.07);
    padding: 2em 0 3em 0;
    position: relative;
    overflow: hidden;
}
.history-section h2 {
    text-align: center;
    font-size: 2.2em;
    margin-bottom: 1.5em;
    color: var(--main-brown);
    letter-spacing: 4px;
}
.history-tabs {
    display: flex;
    justify-content: right;
    gap: 2em;
    position: relative;
    z-index: 2;
}
.history-tabs .tab {
    padding: 0.6em 2em;
    background: var(--main-orange);
    color: var(--main-dark);
    border-radius: 24px 24px 0 0;
    cursor: pointer;
    font-size: 1.1em;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(160,90,28,0.08);
    position: relative;
    z-index: 2;
    user-select: none;
}
.history-tabs .tab:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(160,90,28,0.15);
}
.history-tabs .tab.active {
    background: var(--main-brown);
    color: #fffbe9;
    box-shadow: 0 4px 16px rgba(160,90,28,0.10);
}

.history-content {
    position: relative;
    height: 320px;
    margin-top: 0;
    overflow: hidden;
    border-radius: 0 0 16px 16px;
    border: 10px solid #a05a1c;
}
.history-iframe {
    position: absolute;
    left: 0; right: 0;
    top: 0; bottom: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transform: translateY(40px) scale(0.98);
    transition: all 0.6s cubic-bezier(.4,0,.2,1);
    z-index: 1;
    overflow: hidden;
}
.history-iframe.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
    z-index: 2;
}
.history-iframe iframe {
    width: 100%;
    height: 100%;
    border-radius: 0 0 16px 16px;
    border: none;
    box-shadow: 0 4px 24px rgba(160,90,28,0.10);
    background: var(--main-bg);
    object-fit: cover;
    overflow: hidden;
    display: block;
    transform: scale(1);
    transition: transform 0.5s ease-in-out;
}

/* 鼠标悬浮图片放大效果 */
.history-iframe.active:hover iframe {
    transform: scale(1.08);
}

/* 添加渐变遮罩，使放大效果更自然 */
.history-iframe::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, 
        rgba(160,90,28,0) 0%,
        rgba(160,90,28,0.02) 80%,
        rgba(160,90,28,0.05) 100%
    );
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    pointer-events: none;
    z-index: 3;
}

.history-iframe.active:hover::after {
    opacity: 1;
}

/* 底部 */
.footer {
    display: none;
}

/* 联系我们页面表单样式 */
.contact-section {
    background: linear-gradient(120deg, #fffbe9 0%, #fff7e6 100%);
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(160,90,28,0.07);
    padding: 2.5em 0 3em 0;
    margin: 2em 0;
    position: relative;
    overflow: hidden;
}
.contact-section h2 {
    text-align: center;
    font-size: 2em;
    color: var(--main-brown);
    margin-bottom: 1.5em;
    letter-spacing: 2px;
    font-weight: bold;
}
.contact-desc {
    text-align: center;
    color: var(--main-accent);
    font-size: 1.1em;
    margin-bottom: 1.2em;
    letter-spacing: 1px;
}
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5em;
}
.form-row {
    display: flex;
    gap: 1.5em;
    margin-bottom: 0.5em;
}
.form-group {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    gap: 0.4em;
}
.form-group input,
.form-group select,
.form-group textarea {
    font-size: 1em;
    border-radius: 8px;
    border: 1.5px solid var(--main-orange);
    background: var(--main-bg);
    padding: 0.7em 1em;
    transition: border 0.3s, box-shadow 0.3s;
    outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border: 1.5px solid var(--main-brown);
    box-shadow: 0 2px 8px rgba(160,90,28,0.10);
    background: #fff;
}
.form-group label {
    color: var(--main-brown);
    font-size: 1.05em;
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 0.1em;
    display: flex;
    align-items: center;
    gap: 0.3em;
}
.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background: var(--main-bg) url('data:image/svg+xml;utf8,<svg fill="%23a05a1c" height="20" viewBox="0 0 20 20" width="20" xmlns="http://www.w3.org/2000/svg"><path d="M7.293 7.293a1 1 0 011.414 0L10 8.586l1.293-1.293a1 1 0 111.414 1.414l-2 2a1 1 0 01-1.414 0l-2-2a1 1 0 010-1.414z"/></svg>') no-repeat right 0.8em center/1.2em 1.2em;
}
@media (max-width: 900px) {
    .form-row {
        flex-direction: column;
        gap: 0.8em;
    }
}
.form-group input[type="date"]::-webkit-input-placeholder,
.form-group input[type="number"]::-webkit-input-placeholder {
    color: #c9a96a;
}
.form-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.5) sepia(1) saturate(5) hue-rotate(10deg);
}
.form-group input[type="number"]::-webkit-inner-spin-button,
.form-group input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.form-group input[type="number"] {
    -moz-appearance: textfield;
}
.contact-form button {
    background: linear-gradient(90deg, var(--main-orange) 0%, var(--main-brown) 100%);
    color: #fffbe9;
    border: none;
    border-radius: 8px;
    padding: 0.9em;
    font-size: 1.1em;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    font-weight: bold;
    margin-top: 0.5em;
    letter-spacing: 2px;
    box-shadow: 0 2px 8px rgba(160,90,28,0.10);
}
.contact-form button:hover {
    background: linear-gradient(90deg, var(--main-brown) 0%, var(--main-orange) 100%);
    transform: translateY(-2px) scale(1.03);
}
.contact-form input[type="text"]::placeholder,
.contact-form input[type="email"]::placeholder,
.contact-form textarea::placeholder {
    color: #c9a96a;
    font-size: 0.98em;
}

/* 品牌家族区域 */
.brand-family-section {
    background: var(--main-light);
    padding: 2.5em 0 2em 0;
    border-radius: 16px;
    margin-bottom: 2em;
    box-shadow: 0 4px 24px rgba(160,90,28,0.06);
}
.brand-family-section h2 {
    text-align: center;
    font-size: 2em;
    color: var(--main-brown);
    margin-bottom: 2em;
    letter-spacing: 2px;
    font-weight: bold;
}
.brand-family-section h2 span {
    font-size: 0.7em;
    color: var(--main-orange);
    margin-left: 1em;
    font-weight: normal;
}
.brand-family-cards {
    display: flex;
    justify-content: space-between;
    gap: 2em;
    flex-wrap: wrap;
}
.brand-category {
    flex: 1 1 0;
    min-width: 220px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(160,90,28,0.07);
    padding: 1.2em 1em 1.5em 1em;
    margin: 0 0.5em;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: box-shadow 0.3s;
}
.brand-category h3 {
    color: var(--main-accent);
    font-size: 1.2em;
    margin-bottom: 1em;
    letter-spacing: 2px;
}
.brand-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 1em;
    justify-content: center;
}
.brand-card {
    background: linear-gradient(90deg, var(--main-orange) 0%, var(--main-brown) 100%);
    color: #fffbe9;
    border-radius: 8px;
    padding: 0.7em 1.5em;
    font-size: 1em;
    margin: 0.2em 0;
    box-shadow: 0 2px 8px rgba(160,90,28,0.10);
    transition: transform 0.25s, box-shadow 0.25s;
    cursor: pointer;
    font-weight: bold;
    letter-spacing: 1px;
    border: none;
}
.brand-card:hover {
    color: #ffe9b4;
}

/* 页脚样式 */
footer {
    background: var(--main-dark);
    color: #fff;
    margin-top: 3em;
}

.footer-top {
    padding: 3em 0;
    background: linear-gradient(to bottom, 
        rgba(92,44,6,0.98) 0%,
        rgba(92,44,6,0.95) 100%
    );
}

.footer-columns {
    display: flex;
    justify-content: space-between;
    gap: 2em;
}

.footer-column {
    flex: 1;
}

.footer-column h3 {
    color: var(--main-orange);
    font-size: 1.2em;
    margin-bottom: 1.2em;
    position: relative;
    padding-bottom: 0.8em;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--main-orange);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 0.8em;
}

.footer-column ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 0.95em;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 15px;
}

.footer-column ul li a::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--main-orange);
    transition: transform 0.3s ease;
}

.footer-column ul li a:hover {
    color: var(--main-orange);
    padding-left: 20px;
}

.footer-column ul li a:hover::before {
    transform: translateX(5px);
}

.footer-bottom {
    background: rgba(92,44,6,1);
    padding: 1.2em 0;
    text-align: center;
    font-size: 0.9em;
    color: rgba(255,255,255,0.8);
}

.footer-bottom p {
    margin: 0;
}

/* 新主色调（橙、棕、米色） */
:root {
    --main-bg: #fff7e6;
    --main-orange: #f7c873;
    --main-brown: #a05a1c;
    --main-dark: #5c2c06;
    --main-light: #fffbe9;
    --main-accent: #e6a23c;
    --main-hover: #f9e0b7;
}