:root {
    --product-page-bg: #f8f5f0;
    --product-text: #2c2414;
    --product-muted: #6f6558;
    --product-line: rgba(44, 36, 20, 0.12);
    --product-accent: #c9b176;
    --product-accent-deep: #9b895c;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--product-page-bg);
    color: var(--product-text);
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans", Arial, Helvetica, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color 0.25s ease, opacity 0.25s ease; }
button, input, textarea { font: inherit; }
button { border: 0; background: transparent; cursor: pointer; }
img { display: block; width: 100%; max-width: 100%; }
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}
.hidden { display: none !important; }
.index-product-detail,
.index-faq,
.index-faq-intro,
.index-inquiry-cta,
.index-more-products,
.index-rich-detail {
    width: min(1600px, calc(100% - 40px));
    margin: 80px auto;
    padding: 0 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: index-section-fade 0.8s ease forwards;
}
@keyframes index-section-fade { to { opacity: 1; transform: translateY(0); } }
.index-btn-hover { transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease; cursor: pointer; }
.index-btn-hover:hover { transform: translateY(-3px); box-shadow: 0 8px 16px rgba(201, 177, 118, 0.2); }
.index-product-detail {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    gap: 60px;
    margin-top: 128px;
    animation-delay: 0.1s;
}
.index-product-gallery {
    flex: 0 0 740px;
    width: 740px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}
.index-gallery-thumbs {
    width: 120px;
    max-height: 800px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex: 0 0 120px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.index-gallery-thumbs::-webkit-scrollbar { display: none; }
.index-thumb-scrollbar { display: none; }
.index-thumb-scrollbar span { display: block; }
.index-thumb-item {
    width: 100%;
    height: 120px;
    object-fit: cover;
    aspect-ratio: 1 / 1;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color 0.3s ease, transform 0.3s ease;
    border-radius: 4px;
    background: #fff;
}
.index-thumb-item.active,
.index-thumb-item:hover { border-color: var(--product-accent); transform: scale(1.05); }
.index-gallery-main {
    flex: 1 1 600px;
    position: relative;
    max-width: calc(100% - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
    border-radius: 8px;
    background: #fff;
}
.index-main-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: opacity 0.4s ease;
}
.index-product-info { flex: 1 1 auto; max-width: 620px; }
.index-info-title {
    margin-bottom: 20px;
    color: var(--product-accent);
    font-size: 30px;
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: 1px;
}
.index-info-row { margin: 12px 0; color: #666; font-size: 16px; }
.index-info-row strong {
    display: inline-block;
    width: 120px;
    color: #2d2a26;
    font-weight: 500;
}
.index-inquiry-btn {
    margin: 10px 0;
    padding: 14px 40px;
    border-radius: 50px;
    background-color: var(--product-accent);
    color: #fff;
    font-size: 16px;
}
.index-accordion-group { display: flex; flex-direction: column; }
.index-accordion-item { border-bottom: 1px solid #eee; padding-bottom: 5px; }
.index-accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 20px 0;
    color: #2d2a26;
    font-size: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.3s ease;
}
.index-accordion-header:hover,
.index-accordion-header i { color: var(--product-accent); }
.index-accordion-header i { transition: transform 0.3s ease; }
.index-accordion-content {
    max-height: 0;
    overflow: hidden;
    padding-left: 5px;
    transition: max-height 0.5s ease;
}
.index-accordion-item.active .index-accordion-content { max-height: 900px; }
.index-color-card { display: flex; flex-wrap: wrap; gap: 12px; margin: 15px 0; }
.index-color-item {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid #fff;
    box-shadow: 0 0 0 1px #ddd;
}
.index-color-chip { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; }
.index-oem-learn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 14px 0 6px;
    padding: 10px 28px;
    border: 1px solid var(--product-accent);
    border-radius: 999px;
    color: #8f7542;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.index-oem-learn:hover { background: var(--product-accent); color: #fff; }
.index-oem-actions { display: flex; justify-content: flex-start; margin-top: 6px; }
.index-rich-detail {
    max-width: 1180px;
    animation-delay: 0.18s;
}
.index-rich-detail table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}
.index-rich-detail th,
.index-rich-detail td {
    padding: 14px 16px;
    border: 1px solid rgba(44,36,20,0.12);
    text-align: left;
    vertical-align: top;
}
.index-rich-detail img { width: 100%; height: auto; object-fit: contain; }
.index-faq { animation-delay: 0.2s; }
.index-faq-title,
.index-more-title {
    margin-bottom: 50px;
    position: relative;
    color: var(--product-accent);
    font-size: 32px;
    text-align: center;
}
.index-faq-title::after,
.index-more-title::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    width: 80px;
    height: 3px;
    background-color: var(--product-accent);
    transform: translateX(-50%);
}
.index-faq-desc {
    max-width: 1000px;
    margin: 0 auto 40px;
    color: #666;
    font-size: 18px;
    line-height: 1.8;
    text-align: center;
}
.index-faq-list { max-width: 1000px; margin: 0 auto; }
.index-faq .index-accordion-content p { padding: 0 0 16px; color: #666; }
.index-faq-intro {
    max-width: 1000px;
    margin: -40px auto 80px;
    text-align: center;
    animation-delay: 0.25s;
}
.index-faq-intro h3 {
    margin-bottom: 20px;
    color: var(--product-accent);
    font-size: 26px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.index-faq-intro p { color: #666; font-size: 18px; line-height: 1.8; }
.index-inquiry-cta { padding: 60px 40px; border-radius: 12px; animation-delay: 0.3s; }
.index-cta-wrapper { display: flex; justify-content: space-around; align-items: center; flex-wrap: wrap; gap: 30px; }
.index-cta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 220px;
    padding: 30px 20px;
    border-radius: 10px;
    background-color: #fff;
    text-align: center;
}
.index-cta-icon { color: var(--product-accent); font-size: 36px; transition: transform 0.3s ease; }
.index-cta-item:hover .index-cta-icon { transform: scale(1.2) rotate(5deg); }
.index-cta-text { color: #2d2a26; font-size: 18px; font-weight: 500; }
.index-more-products { animation-delay: 0.4s; }
.index-product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.index-product-card {
    display: block;
    overflow: hidden;
    border-radius: 10px;
    background: #fff;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.index-product-card:hover { transform: translateY(-10px); box-shadow: 0 12px 24px rgba(0,0,0,0.1); }
.index-card-img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    background: #fff;
    transition: transform 0.4s ease;
}
.index-product-card:hover .index-card-img { transform: scale(1.08); }
.index-card-info { padding: 20px; text-align: center; }
.index-card-name { margin-bottom: 8px; font-size: 18px; font-weight: 500; }
.index-card-sku { color: #666; font-size: 14px; }
.index-inquiry-modal {
    position: fixed;
    inset: 0;
    z-index: 1002;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0,0,0,0.7);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}
.index-inquiry-modal.active { opacity: 1; visibility: visible; }
.index-modal-content {
    position: relative;
    width: min(600px, calc(100% - 32px));
    padding: 50px;
    border-radius: 12px;
    background-color: #fff;
    transform: scale(0.8);
    transition: transform 0.4s ease;
}
.index-inquiry-modal.active .index-modal-content { transform: scale(1); }
.index-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #666;
    font-size: 24px;
    cursor: pointer;
}
.index-modal-close:hover { color: var(--product-accent); }
.index-modal-title { margin-bottom: 30px; color: var(--product-accent); font-size: 24px; text-align: center; }
.index-modal-form { display: flex; flex-direction: column; gap: 14px; }
.index-modal-form .form-honeypot {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.index-form-input {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}
.index-form-input:focus { border-color: var(--product-accent); }
.index-modal-captcha {
    display: grid;
    grid-template-columns: 92px 1fr auto;
    gap: 10px;
    align-items: center;
}
.index-modal-captcha img {
    width: 86px;
    height: 34px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: #fff;
}
.index-modal-captcha input {
    min-width: 0;
    padding: 11px 12px;
}
.index-modal-captcha button {
    min-height: 38px;
    padding: 0 13px;
    border: 1px solid #d7c493;
    border-radius: 6px;
    background: #f7f0df;
    color: #6b5525;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}
.index-form-submit {
    padding: 15px;
    border-radius: 6px;
    background-color: var(--product-accent);
    color: #fff;
    font-size: 16px;
}
.index-form-notice { min-height: 20px; margin: 0; color: #6f6558; font-size: 14px; line-height: 1.6; }
.index-form-notice.active { display: block; }
.index-form-notice.is-success { color: #27693f; }
.index-form-notice.is-error { color: #a4352b; }
@media (max-width: 1199px) {.index-product-detail { flex-direction: column; gap: 40px; margin-top: 118px; }
    .index-product-gallery, .index-product-info { width: 100%; }
    .index-product-gallery { flex-basis: auto; }
    .index-product-info { max-width: none; }
    .index-product-grid { grid-template-columns: repeat(2, 1fr); }
    .index-gallery-main { flex-basis: 600px; max-width: calc(100% - 140px); }
}
@media (max-width: 767px) {.index-product-detail,
    .index-faq,
    .index-faq-intro,
    .index-inquiry-cta,
    .index-more-products,
    .index-rich-detail { width: 100%; padding: 0 20px; }
    .index-product-detail { margin-top: 104px; }
    .index-product-gallery { flex-direction: column; align-items: center; gap: 14px; }
    .index-gallery-thumbs {
        order: 2;
        width: min(100%, 340px);
        max-height: none;
        flex: 0 0 auto;
        flex-direction: row;
        gap: 10px;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 0 2px 10px;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
    .index-gallery-thumbs::-webkit-scrollbar { display: none; }
    .index-thumb-scrollbar {
        order: 3;
        display: none;
        width: min(100%, 340px);
        height: 4px;
        margin-top: -4px;
        overflow: hidden;
        border-radius: 999px;
        background: rgba(201, 177, 118, 0.18);
    }
    .index-thumb-scrollbar span {
        width: var(--scrollbar-thumb-width, 34%);
        height: 100%;
        border-radius: inherit;
        background: var(--product-accent);
        transform: translateX(var(--scrollbar-thumb-x, 0px));
        transition: transform 0.12s ease, width 0.12s ease;
    }
    .index-thumb-item { flex: 0 0 74px; width: 74px; height: 74px; aspect-ratio: 1 / 1; scroll-snap-align: start; }
    .index-thumb-item.active, .index-thumb-item:hover { transform: none; }
    .index-gallery-main { order: 1; flex: 0 0 auto; width: min(100%, 340px); max-width: 100%; }
    .index-info-title { font-size: 28px; }
    .index-info-row strong { display: block; width: auto; margin-bottom: 3px; }
    .index-product-grid { grid-template-columns: 1fr; }
    .index-modal-content { padding: 30px 20px; }
    .index-modal-captcha { grid-template-columns: 86px 1fr; }
    .index-modal-captcha button { grid-column: 1 / -1; width: 100%; }
    .index-cta-wrapper { flex-direction: column; }
    .index-faq-desc { padding: 0 10px; font-size: 16px; }
    .index-faq-intro h3 { font-size: 22px; }
    .index-faq-intro p { font-size: 16px; }
}