/* ==========================================================================
   中山市日升剥漆设备配件 — 前台样式
   主色沿用原站：深蓝 #01458d / #063a90，Logo 红 #ff0000
   ========================================================================== */

:root {
    --rs-blue: #01458d;
    --rs-blue-light: #0a5aa8;
    --rs-blue-dark: #063a90;
    --rs-blue-deep: #052c66;
    --rs-blue-soft: #eaf1f9;
    --rs-red: #e60012;
    --rs-heading: #1f2733;
    --rs-text: #5b6572;
    --rs-line: #e4e9f0;
    --rs-bg: #f5f8fc;
    --rs-radius: 10px;
    --rs-shadow: 0 10px 30px rgba(1, 69, 141, .08);
    --rs-shadow-hover: 0 18px 40px rgba(1, 69, 141, .16);
    --rs-container: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--rs-text);
    font-size: 15px;
    line-height: 1.75;
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--rs-blue);
    text-decoration: none;
    transition: color .2s ease;
}

a:hover {
    color: var(--rs-blue-light);
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--rs-heading);
    font-weight: 700;
    line-height: 1.45;
}

.container,
.container-lg {
    max-width: var(--rs-container);
}

@media (min-width: 1400px) {
    .container,
    .container-lg {
        max-width: var(--rs-container);
    }
}

/* ---------- 顶部信息条 ---------- */
.rs-topbar {
    background: var(--rs-blue-deep);
    color: rgba(255, 255, 255, .78);
    font-size: 13px;
    padding: 7px 0;
}

.rs-topbar a {
    color: rgba(255, 255, 255, .86);
}

.rs-topbar a:hover {
    color: #fff;
}

.rs-topbar .rs-topbar-item + .rs-topbar-item {
    margin-left: 18px;
}

.rs-topbar .bi {
    margin-right: 5px;
    color: rgba(255, 255, 255, .6);
}

/* ---------- 品牌头部 ---------- */
.rs-header {
    background: #fff;
    transition: box-shadow .25s ease;
    z-index: 1030;
}

.rs-header.is-stuck {
    box-shadow: 0 6px 22px rgba(6, 34, 74, .12);
}

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

.rs-brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 8px;
    background: linear-gradient(140deg, var(--rs-blue) 0%, var(--rs-blue-deep) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -1px;
    flex: 0 0 auto;
}

.rs-brand-logo {
    height: 52px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    border-radius: 4px;
    flex: 0 0 auto;
}

.rs-brand-text {
    line-height: 1.3;
}

.rs-brand-name {
    font-size: 22px;
    font-weight: 700;
    color: var(--rs-blue);
    letter-spacing: .5px;
    margin: 0;
}

.rs-brand-name .rs-red {
    color: var(--rs-red);
}

.rs-brand-sub {
    font-size: 12px;
    color: #8b97a6;
    letter-spacing: 1px;
}

.rs-headline-contact {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
}

.rs-headline-contact .bi {
    font-size: 26px;
    color: var(--rs-blue);
}

.rs-headline-contact small {
    display: block;
    color: #8b97a6;
    font-size: 12px;
    line-height: 1.2;
    white-space: nowrap;
}

.rs-headline-contact strong {
    font-size: 21px;
    color: var(--rs-blue);
    letter-spacing: .5px;
    white-space: nowrap;
}

/* 英文站品牌名较长，缩小字号避免挤压右侧联系号码 */
html[lang="en"] .rs-brand-name {
    font-size: 18px;
    letter-spacing: 0;
}

@media (min-width: 992px) and (max-width: 1199.98px) {
    html[lang="en"] .rs-brand-name {
        font-size: 17px;
    }

    html[lang="en"] .rs-headline-contact .bi {
        font-size: 22px;
    }

    html[lang="en"] .rs-headline-contact strong {
        font-size: 18px;
    }
}

/* 英文导航文案较长，窄屏压缩字号与内边距，避免横向溢出 */
@media (max-width: 1319.98px) {
    html[lang="en"] .rs-nav .nav-link {
        font-size: 13px;
        padding: 15px 10px;
    }

    html[lang="en"] .rs-nav .nav-link::after {
        left: 10px;
        right: 10px;
    }

    html[lang="en"] .rs-nav .rs-nav-search {
        max-width: 170px;
    }
}

/* g-lg-5 栅格负外边距(-24px)大于容器内边距(12px)，收敛为 -12px 避免出现横向滚动条 */
@media (min-width: 992px) {
    .container > .row.g-lg-5 {
        margin-left: -12px;
        margin-right: -12px;
    }
}

@media (min-width: 992px) and (max-width: 1199.98px) {
    html[lang="en"] .rs-nav .nav-link {
        font-size: 12px;
        padding: 15px 8px;
    }

    html[lang="en"] .rs-nav .nav-link::after {
        left: 8px;
        right: 8px;
    }

    html[lang="en"] .rs-nav .rs-nav-search {
        display: none;
    }
}

/* ---------- 导航 ---------- */
.rs-nav {
    background: var(--rs-blue);
    --bs-navbar-padding-y: 0;
}

.rs-nav .navbar-nav {
    width: 100%;
}

.rs-nav .nav-link {
    color: rgba(255, 255, 255, .88);
    font-size: 15px;
    padding: 15px 18px;
    position: relative;
    white-space: nowrap;
}

.rs-nav .nav-link:hover,
.rs-nav .nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, .1);
}

.rs-nav .nav-link::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 0;
    height: 3px;
    background: #fff;
    transform: scaleX(0);
    transition: transform .25s ease;
}

.rs-nav .nav-link:hover::after,
.rs-nav .nav-link.active::after {
    transform: scaleX(1);
}

.rs-nav .rs-nav-search {
    max-width: 220px;
}

.rs-nav .rs-nav-search .form-control {
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .28);
    color: #fff;
    font-size: 13px;
    border-radius: 20px 0 0 20px;
    padding-left: 14px;
}

.rs-nav .rs-nav-search .form-control::placeholder {
    color: rgba(255, 255, 255, .6);
}

.rs-nav .rs-nav-search .btn {
    border-radius: 0 20px 20px 0;
    background: rgba(255, 255, 255, .18);
    border: 1px solid rgba(255, 255, 255, .28);
    border-left: 0;
    color: #fff;
}

.rs-offcanvas {
    --bs-offcanvas-width: 300px;
}

.rs-offcanvas .offcanvas-header {
    background: var(--rs-blue);
    color: #fff;
}

.rs-offcanvas .offcanvas-header .btn-close {
    filter: invert(1);
}

.rs-offcanvas .list-group-item {
    border: 0;
    border-bottom: 1px solid var(--rs-line);
    padding: 14px 20px;
    font-size: 15px;
    color: var(--rs-heading);
    display: flex;
    justify-content: space-between;
}

.rs-offcanvas .list-group-item.active {
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    font-weight: 600;
}

/* ---------- 首页轮播 ---------- */
.rs-hero {
    position: relative;
}

/* banner 原图 1920 × 600 自带文案，按原比例缩放，全屏 / 超宽屏下不裁切 */
.rs-hero .carousel-item {
    height: auto;
    aspect-ratio: 1920 / 600;
    background: var(--rs-blue-deep);
}

.rs-hero .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-hero .carousel-indicators [data-bs-target] {
    width: 26px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, .5);
}

.rs-hero .carousel-indicators .active {
    background: #fff;
}

.rs-hero .carousel-control-prev,
.rs-hero .carousel-control-next {
    width: 6%;
    opacity: .35;
}

.rs-hero .carousel-control-prev:hover,
.rs-hero .carousel-control-next:hover {
    opacity: .9;
}

/* ---------- 通用按钮 ---------- */
.btn-rs {
    background: var(--rs-blue);
    border-color: var(--rs-blue);
    color: #fff;
    border-radius: 6px;
    padding: 9px 22px;
    font-size: 14px;
}

.btn-rs:hover,
.btn-rs:focus {
    background: var(--rs-blue-light);
    border-color: var(--rs-blue-light);
    color: #fff;
}

.btn-rs-outline {
    border: 1px solid rgba(255, 255, 255, .6);
    color: #fff;
    border-radius: 999px;
    padding: 10px 26px;
    font-size: 15px;
    background: transparent;
}

.btn-rs-outline:hover {
    background: #fff;
    color: var(--rs-blue);
    border-color: #fff;
}

.btn-rs-ghost {
    border: 1px solid var(--rs-line);
    color: var(--rs-heading);
    background: #fff;
    border-radius: 6px;
}

.btn-rs-ghost:hover {
    border-color: var(--rs-blue);
    color: var(--rs-blue);
}

/* ---------- 区块 ---------- */
.rs-section {
    padding: 76px 0;
}

.rs-section-sm {
    padding: 48px 0;
}

.rs-section-soft {
    background: var(--rs-bg);
}

.rs-sec-head {
    text-align: center;
    margin-bottom: 44px;
}

.rs-sec-head .eyebrow {
    display: block;
    font-size: 12px;
    letter-spacing: 5px;
    color: rgba(1, 69, 141, .55);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.rs-sec-head h2 {
    font-size: clamp(24px, 2.4vw, 34px);
    margin: 0;
    letter-spacing: 1px;
}

.rs-sec-head .line {
    width: 46px;
    height: 3px;
    background: var(--rs-blue);
    margin: 16px auto 0;
    border-radius: 2px;
}

.rs-sec-head p {
    max-width: 640px;
    margin: 14px auto 0;
    color: #7b8694;
    font-size: 14px;
}

.rs-sec-head.text-start {
    text-align: left;
}

.rs-sec-head.text-start .line {
    margin-left: 0;
}

/* ---------- 特性条 ---------- */
.rs-features {
    background: #fff;
    border-bottom: 1px solid var(--rs-line);
}

.rs-feature {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 26px 18px;
}

.rs-feature-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex: 0 0 auto;
}

.rs-feature h3 {
    font-size: 16px;
    margin: 0;
}

.rs-feature p {
    margin: 2px 0 0;
    font-size: 12.5px;
    color: #93a0af;
}

/* ---------- 产品卡片 ---------- */
.rs-product-card {
    display: block;
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    overflow: hidden;
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.rs-product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--rs-shadow-hover);
    border-color: rgba(1, 69, 141, .35);
}

.rs-product-thumb {
    position: relative;
    aspect-ratio: 4 / 3;
    background: #f7f9fc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.rs-product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 14px;
    transition: transform .4s ease;
}

.rs-product-card:hover .rs-product-thumb img {
    transform: scale(1.05);
}

.rs-product-body {
    padding: 16px 18px 18px;
    border-top: 1px solid var(--rs-line);
}

.rs-product-body h3 {
    font-size: 15.5px;
    margin: 0 0 6px;
    line-height: 1.5;
    min-height: 44px;
}

.rs-product-body p {
    margin: 0;
    font-size: 12.5px;
    color: #8b97a6;
}

.rs-product-arrow {
    color: var(--rs-blue);
    font-size: 13px;
}

.rs-card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    color: var(--rs-blue);
    font-size: 14px;
}

/* ---------- 产品分类卡 ---------- */
.rs-cat-card {
    position: relative;
    display: block;
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 26px 20px;
    text-align: center;
    height: 100%;
    overflow: hidden;
}

.rs-cat-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 3px;
    background: var(--rs-blue);
    transform: scaleX(0);
    transition: transform .25s ease;
}

.rs-cat-card:hover::before {
    transform: scaleX(1);
}

.rs-cat-card:hover {
    box-shadow: var(--rs-shadow);
    border-color: transparent;
}

.rs-cat-icon {
    width: 96px;
    height: 96px;
    margin: 0 auto 12px;
    border-radius: 12px;
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    overflow: hidden;
}

.rs-cat-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-cat-card h3 {
    font-size: 15px;
    margin: 0;
    line-height: 1.55;
}

.rs-cat-card span {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: #98a4b2;
}

/* ---------- 精选设备 ---------- */
.rs-featured {
    background: var(--rs-blue-deep);
    position: relative;
    overflow: hidden;
}

.rs-featured::before {
    content: "";
    position: absolute;
    right: -160px;
    top: -160px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .07);
}

.rs-featured::after {
    content: "";
    position: absolute;
    left: -120px;
    bottom: -180px;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .03);
}

.rs-featured .rs-sec-head h2 {
    color: #fff;
}

.rs-featured .rs-sec-head .eyebrow {
    color: rgba(255, 255, 255, .5);
}

.rs-featured .rs-sec-head .line {
    background: rgba(255, 255, 255, .8);
}

.rs-featured .rs-sec-head p {
    color: rgba(255, 255, 255, .6);
}

.rs-equip-card {
    background: #fff;
    border-radius: var(--rs-radius);
    overflow: hidden;
    height: 100%;
    transition: transform .25s ease, box-shadow .25s ease;
}

.rs-equip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 22px 44px rgba(0, 0, 0, .25);
}

.rs-equip-thumb {
    aspect-ratio: 4 / 3;
    background: #f4f7fb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rs-equip-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 16px;
}

.rs-equip-body {
    padding: 18px 20px 20px;
}

.rs-equip-body .model {
    font-size: 12px;
    letter-spacing: 1px;
    color: var(--rs-blue);
    font-weight: 600;
}

.rs-equip-body h3 {
    font-size: 16px;
    margin: 4px 0 8px;
}

.rs-equip-body p {
    font-size: 13px;
    color: #7b8694;
    margin-bottom: 12px;
}

.rs-equip-body .link {
    font-size: 13px;
    color: var(--rs-blue);
}

/* ---------- 成功案例 ---------- */
.rs-case-main {
    position: relative;
    border-radius: var(--rs-radius);
    overflow: hidden;
    min-height: 300px;
    background: #dfe6ef;
}

.rs-case-main img {
    width: 100%;
    height: 100%;
    min-height: 300px;
    object-fit: cover;
    transition: transform .5s ease;
}

.rs-case-main:hover img {
    transform: scale(1.04);
}

.rs-case-caption {
    position: absolute;
    inset: auto 0 0 0;
    padding: 40px 24px 20px;
    color: #fff;
    background: linear-gradient(180deg, rgba(3, 30, 64, 0) 0%, rgba(3, 30, 64, .86) 100%);
}

.rs-case-caption h3 {
    color: #fff;
    font-size: 18px;
    margin: 0 0 6px;
}

.rs-case-caption p {
    margin: 0;
    font-size: 13px;
    color: rgba(255, 255, 255, .78);
}

.rs-case-side {
    display: flex;
    gap: 14px;
    height: 100%;
}

.rs-case-side .item {
    flex: 1 1 0;
    display: block;
    position: relative;
    border-radius: var(--rs-radius);
    overflow: hidden;
    background: #dfe6ef;
    min-height: 140px;
}

.rs-case-side img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
}

.rs-case-side span {
    position: absolute;
    inset: auto 0 0 0;
    padding: 30px 14px 10px;
    background: linear-gradient(180deg, rgba(3, 30, 64, 0) 0%, rgba(3, 30, 64, .85) 100%);
    color: #fff;
    font-size: 12.5px;
    line-height: 1.5;
}

/* ---------- 关于我们 ---------- */
.rs-about-panel {
    background: linear-gradient(135deg, var(--rs-blue) 0%, var(--rs-blue-deep) 100%);
    color: #fff;
    border-radius: var(--rs-radius);
    padding: 34px 30px;
    position: relative;
    overflow: hidden;
}

.rs-about-panel::after {
    content: "";
    position: absolute;
    right: -70px;
    bottom: -90px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .06);
}

.rs-about-panel h3 {
    color: #fff;
    font-size: 22px;
    margin-bottom: 6px;
}

.rs-about-panel p {
    color: rgba(255, 255, 255, .72);
    font-size: 13px;
    margin-bottom: 22px;
}

.rs-about-stat {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.rs-about-stat li {
    list-style: none;
}

.rs-about-stat strong {
    display: block;
    font-size: 26px;
    line-height: 1.2;
    color: #fff;
}

.rs-about-stat span {
    font-size: 12px;
    color: rgba(255, 255, 255, .62);
}

.rs-about-body p {
    color: var(--rs-text);
    font-size: 14.5px;
    margin-bottom: 18px;
}

.rs-about-points {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 22px 0;
    padding: 0;
}

.rs-about-points li {
    list-style: none;
    background: var(--rs-bg);
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 13.5px;
    color: var(--rs-heading);
}

.rs-about-points .bi {
    color: var(--rs-blue);
    margin-right: 6px;
}

/* ---------- 新闻 ---------- */
.rs-news-tabs {
    display: flex;
    gap: 26px;
    border-bottom: 1px solid var(--rs-line);
    margin-bottom: 24px;
    overflow-x: auto;
}

.rs-news-tabs a {
    position: relative;
    padding: 0 0 12px;
    color: var(--rs-text);
    font-size: 15px;
    white-space: nowrap;
}

.rs-news-tabs a.active {
    color: var(--rs-blue);
    font-weight: 600;
}

.rs-news-tabs a.active::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 3px;
    background: var(--rs-blue);
}

.rs-news-lead {
    display: block;
    border-radius: var(--rs-radius);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--rs-line);
    height: 100%;
}

.rs-news-lead img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.rs-news-lead-body {
    padding: 18px 20px 22px;
}

.rs-news-lead-body h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.rs-news-lead-body p {
    font-size: 13px;
    color: #8b97a6;
    margin: 0;
}

.rs-news-item {
    display: flex;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px dashed var(--rs-line);
}

.rs-news-item:first-child {
    padding-top: 0;
}

.rs-news-date {
    flex: 0 0 66px;
    text-align: center;
    background: var(--rs-bg);
    border-radius: 8px;
    padding: 8px 0;
    height: 66px;
}

.rs-news-date strong {
    display: block;
    font-size: 20px;
    color: var(--rs-blue);
    line-height: 1.1;
}

.rs-news-date span {
    font-size: 11px;
    color: #93a0af;
}

.rs-news-item h3 {
    font-size: 15px;
    margin: 0 0 4px;
    line-height: 1.6;
}

.rs-news-item p {
    font-size: 12.5px;
    color: #93a0af;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 专家解答 ---------- */
.rs-expert-card {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.rs-expert-thumb {
    aspect-ratio: 16 / 9;
    background: var(--rs-blue-soft);
    overflow: hidden;
}

.rs-expert-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-expert-body {
    padding: 18px 20px 22px;
    flex: 1;
}

.rs-expert-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--rs-blue);
    background: var(--rs-blue-soft);
    border-radius: 4px;
    padding: 2px 8px;
    margin-bottom: 10px;
}

.rs-expert-body h3 {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 8px;
}

.rs-expert-body p {
    font-size: 13px;
    color: #8b97a6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 专家解答 - 头条 */
.rs-expert-head {
    display: flex;
    gap: 28px;
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 24px;
    margin-bottom: 28px;
    transition: box-shadow .2s ease, border-color .2s ease;
}

.rs-expert-head:hover {
    box-shadow: var(--rs-shadow);
    border-color: rgba(1, 69, 141, .25);
}

.rs-expert-head-thumb {
    flex: 0 0 42%;
    border-radius: 8px;
    overflow: hidden;
    background: var(--rs-blue-soft);
    aspect-ratio: 4 / 3;
}

.rs-expert-head-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-expert-head-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    min-width: 0;
}

.rs-head-badge {
    display: inline-block;
    font-size: 12px;
    line-height: 1;
    color: #fff;
    background: #d03030;
    border-radius: 4px;
    padding: 4px 8px;
    letter-spacing: 2px;
}

.rs-expert-head-body h2 {
    font-size: 21px;
    line-height: 1.6;
    margin: 4px 0 10px;
}

.rs-expert-head-body h2 a {
    color: var(--rs-text);
}

.rs-expert-head-body h2 a:hover {
    color: var(--rs-blue);
}

.rs-expert-head-body p {
    font-size: 14px;
    color: #7c8794;
    line-height: 1.9;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 专家解答 - 问答列表 */
.rs-qa-item {
    display: flex;
    gap: 22px;
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 18px;
    margin-bottom: 16px;
    transition: box-shadow .2s ease, border-color .2s ease;
}

.rs-qa-item:hover {
    box-shadow: var(--rs-shadow);
    border-color: rgba(1, 69, 141, .25);
}

.rs-qa-thumb {
    flex: 0 0 240px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--rs-blue-soft);
    aspect-ratio: 3 / 2;
}

.rs-qa-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-qa-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.rs-qa-body h3 {
    font-size: 17px;
    line-height: 1.6;
    margin: 2px 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rs-qa-body h3 a {
    color: var(--rs-text);
}

.rs-qa-body h3 a:hover {
    color: var(--rs-blue);
}

.rs-qa-body > p {
    font-size: 13px;
    color: #8b97a6;
    line-height: 1.8;
    margin: 0 0 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rs-qa-foot {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.rs-qa-date {
    font-size: 12px;
    color: #a7b2bf;
}

@media (max-width: 767.98px) {
    .rs-expert-head {
        flex-direction: column;
        gap: 14px;
        padding: 16px;
    }

    .rs-expert-head-thumb {
        flex-basis: auto;
        width: 100%;
    }

    .rs-expert-head-body h2 {
        font-size: 17px;
    }

    .rs-qa-item {
        flex-direction: column;
        gap: 12px;
    }

    .rs-qa-thumb {
        flex-basis: auto;
        width: 100%;
    }
}

/* ---------- 询价 CTA ---------- */
.rs-cta {
    background: linear-gradient(120deg, var(--rs-blue) 0%, #0a5eae 100%);
    color: #fff;
    border-radius: var(--rs-radius);
    padding: 34px 34px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.rs-cta h2 {
    color: #fff;
    font-size: 24px;
    margin: 0 0 6px;
}

.rs-cta p {
    margin: 0;
    color: rgba(255, 255, 255, .75);
    font-size: 13.5px;
}

.rs-cta .btn-light {
    border-radius: 999px;
    padding: 11px 28px;
    color: var(--rs-blue);
    font-weight: 600;
}

/* ---------- 页脚 ---------- */
.rs-footer {
    background: var(--rs-blue-dark);
    color: rgba(255, 255, 255, .68);
    font-size: 13.5px;
}

.rs-footer-main {
    padding: 56px .75rem 34px;
}

.rs-footer h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 18px;
    letter-spacing: .5px;
}

.rs-footer a {
    color: rgba(255, 255, 255, .68);
}

.rs-footer a:hover {
    color: #fff;
}

.rs-footer-links li {
    margin-bottom: 8px;
}

.rs-footer-contact li {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    line-height: 1.6;
}

.rs-footer-contact .bi {
    color: rgba(255, 255, 255, .45);
    margin-top: 3px;
}

.rs-footer-qr {
    text-align: center;
    background: rgba(255, 255, 255, .06);
    border-radius: 8px;
    padding: 12px 8px;
    height: 100%;
}

.rs-footer-qr img {
    width: 100%;
    max-width: 96px;
    background: #fff;
    border-radius: 4px;
    padding: 4px;
}

.rs-footer-qr span {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, .6);
}

.rs-footer-hot {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 16px 0;
    font-size: 12.5px;
}

.rs-footer-hot a {
    margin-right: 14px;
    color: rgba(255, 255, 255, .55);
}

.rs-footer-bottom {
    background: var(--rs-blue-deep);
    padding: 14px 0;
    font-size: 12.5px;
    color: rgba(255, 255, 255, .5);
}

.rs-footer-bottom a {
    color: rgba(255, 255, 255, .5);
}

/* ---------- 悬浮客服 ---------- */
.rs-side {
    position: fixed;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1040;
    display: none;
}

.rs-side a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    width: 56px;
    height: 56px;
    background: var(--rs-blue);
    color: #fff;
    font-size: 11px;
    border-radius: 8px;
    margin-bottom: 4px;
    box-shadow: 0 6px 16px rgba(1, 69, 141, .28);
}

.rs-side a:hover {
    background: var(--rs-blue-light);
    color: #fff;
}

.rs-side a .bi {
    font-size: 18px;
}

.rs-side .rs-side-top {
    background: rgba(1, 69, 141, .55);
}

@media (min-width: 992px) {
    .rs-side {
        display: block;
    }
}

/* ---------- 移动端底部条 ---------- */
.rs-mobile-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1035;
    display: none;
    background: #fff;
    border-top: 1px solid var(--rs-line);
    box-shadow: 0 -4px 16px rgba(1, 69, 141, .08);
    padding-bottom: env(safe-area-inset-bottom);
}

.rs-mobile-bar a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 8px 0;
    font-size: 11px;
    color: var(--rs-heading);
}

.rs-mobile-bar a .bi {
    font-size: 19px;
    color: var(--rs-blue);
}

.rs-mobile-bar a.primary {
    background: var(--rs-blue);
    color: #fff;
    flex: 1.3;
}

.rs-mobile-bar a.primary .bi {
    color: #fff;
}

@media (max-width: 991.98px) {
    .rs-mobile-bar {
        display: flex;
    }

    body {
        padding-bottom: 62px;
    }

    .rs-section {
        padding: 44px 0;
    }

    .rs-sec-head {
        margin-bottom: 28px;
    }

    .rs-topbar {
        display: none;
    }

    .rs-brand-name {
        font-size: 17px;
    }

    html[lang="en"] .rs-brand-name {
        font-size: 16px;
        line-height: 1.25;
    }

    .rs-brand-sub {
        font-size: 11px;
        letter-spacing: .5px;
    }

    .rs-brand-mark {
        width: 44px;
        height: 44px;
        font-size: 20px;
    }

    .rs-brand-logo {
        height: 44px;
        max-width: 130px;
    }

    .rs-hero .carousel-item {
        height: 320px;
    }

    .rs-feature {
        padding: 16px 4px;
    }

    .rs-feature-icon {
        width: 38px;
        height: 38px;
        font-size: 17px;
    }

    .rs-feature h3 {
        font-size: 14px;
    }

    .rs-feature p {
        font-size: 11.5px;
    }

    .rs-case-main,
    .rs-case-main img {
        min-height: 210px;
    }

    .rs-about-points {
        grid-template-columns: 1fr;
    }

    .rs-cta {
        padding: 26px 22px;
        text-align: center;
        justify-content: center;
    }

    .rs-footer-main {
        padding: 38px .75rem 24px;
    }
}

/* ---------- 内页 ---------- */
.rs-page-head {
    background: linear-gradient(120deg, var(--rs-blue) 0%, var(--rs-blue-deep) 100%);
    color: #fff;
    padding: 54px 0 46px;
    position: relative;
    overflow: hidden;
}

.rs-page-head::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -110px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, .12);
}

.rs-page-head h1 {
    color: #fff;
    font-size: clamp(25px, 2.6vw, 36px);
    margin-bottom: 8px;
}

.rs-page-head p {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    margin: 0;
    max-width: 720px;
}

.rs-breadcrumb {
    font-size: 13px;
    margin: 0;
    --bs-breadcrumb-divider-color: rgba(255, 255, 255, .45);
}

.rs-breadcrumb a {
    color: rgba(255, 255, 255, .72);
}

.rs-breadcrumb a:hover {
    color: #fff;
}

.rs-breadcrumb .active {
    color: rgba(255, 255, 255, .95);
}

.rs-breadcrumb-light {
    background: var(--rs-bg);
    padding: 12px 0;
    font-size: 13px;
}

.rs-breadcrumb-light .breadcrumb {
    margin: 0;
}

.rs-breadcrumb-light a {
    color: var(--rs-text);
}

.rs-breadcrumb-light .active {
    color: var(--rs-blue);
}

/* ---------- 侧边栏 ---------- */
.rs-sidebar {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    overflow: hidden;
    margin-bottom: 24px;
}

.rs-sidebar-head {
    background: var(--rs-blue);
    color: #fff;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: 600;
}

.rs-sidebar-head .eyebrow {
    display: block;
    font-size: 10px;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, .55);
    font-weight: 400;
}

.rs-sidebar-list a {
    display: block;
    padding: 13px 20px;
    border-bottom: 1px solid var(--rs-line);
    color: var(--rs-heading);
    font-size: 14px;
    position: relative;
}

.rs-sidebar-list a:last-child {
    border-bottom: 0;
}

.rs-sidebar-list a:hover,
.rs-sidebar-list a.active {
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    font-weight: 600;
}

.rs-sidebar-list a.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--rs-blue);
}

.rs-sidebar-contact {
    background: var(--rs-blue-soft);
    padding: 20px;
    text-align: center;
    border-top: 1px solid var(--rs-line);
}

.rs-sidebar-contact small {
    display: block;
    font-size: 12px;
    color: #8b97a6;
}

.rs-sidebar-contact strong {
    display: block;
    font-size: 20px;
    color: var(--rs-blue);
    margin: 4px 0 12px;
}

/* ---------- 列表/详情通用 ---------- */
.rs-content {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 28px 30px;
    overflow-x: auto;
}

.rs-content h2 {
    font-size: 20px;
    margin: 28px 0 12px;
}

.rs-content h3 {
    font-size: 17px;
    margin: 22px 0 10px;
}

.rs-content p {
    margin-bottom: 14px;
}

.rs-content img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 12px 0;
}

.rs-content iframe,
.rs-content video {
    max-width: 100%;
    border-radius: 6px;
    margin: 12px 0;
}

.rs-content table {
    width: 100%;
    margin-bottom: 18px;
    border-collapse: collapse;
}

.rs-content table th,
.rs-content table td {
    border: 1px solid var(--rs-line);
    padding: 10px 12px;
    font-size: 14px;
}

.rs-content table th {
    background: var(--rs-bg);
    color: var(--rs-heading);
    white-space: nowrap;
}

.rs-content ul,
.rs-content ol {
    padding-left: 1.3em;
}

.rs-article-title {
    font-size: clamp(21px, 2.1vw, 28px);
    margin-bottom: 12px;
}

.rs-article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12.5px;
    color: #98a4b2;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--rs-line);
    margin-bottom: 22px;
}

.rs-article-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    border-top: 1px solid var(--rs-line);
    padding-top: 18px;
    margin-top: 26px;
    font-size: 13.5px;
    flex-wrap: wrap;
}

.rs-news-list-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 18px;
    margin-bottom: 16px;
    transition: box-shadow .2s ease, border-color .2s ease;
}

.rs-news-list-item:hover {
    box-shadow: var(--rs-shadow);
    border-color: rgba(1, 69, 141, .25);
}

.rs-news-list-thumb {
    flex: 0 0 190px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--rs-bg);
    aspect-ratio: 4 / 3;
}

.rs-news-list-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-news-list-body h3 {
    font-size: 17px;
    margin: 0 0 6px;
}

.rs-news-list-body p {
    font-size: 13px;
    color: #8b97a6;
    margin: 0 0 8px;
}

.rs-news-list-body .date {
    font-size: 12px;
    color: #a7b2bf;
}

@media (max-width: 767.98px) {
    .rs-news-list-thumb {
        flex-basis: 110px;
    }

    .rs-news-list-body h3 {
        font-size: 15px;
    }

    .rs-news-list-body p {
        -webkit-line-clamp: 2;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .rs-content {
        padding: 20px 18px;
    }
}

/* ---------- 产品详情 ---------- */
.rs-gallery-main {
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    background: #f7f9fc;
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.rs-gallery-main img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    padding: 18px;
}

.rs-gallery-thumbs {
    display: flex;
    gap: 10px;
    margin-top: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.rs-gallery-thumbs button {
    flex: 0 0 78px;
    width: 78px;
    height: 78px;
    border: 1px solid var(--rs-line);
    border-radius: 6px;
    background: #fff;
    padding: 4px;
    cursor: pointer;
}

.rs-gallery-thumbs button.active,
.rs-gallery-thumbs button:hover {
    border-color: var(--rs-blue);
}

.rs-gallery-thumbs img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.rs-product-info h1 {
    font-size: clamp(21px, 2.2vw, 30px);
    margin-bottom: 10px;
}

.rs-product-badges .badge {
    font-weight: 400;
    font-size: 12px;
    margin-right: 6px;
    padding: 5px 9px;
}

.rs-product-summary {
    font-size: 14px;
    color: #6c7785;
    background: var(--rs-bg);
    border-left: 3px solid var(--rs-blue);
    padding: 14px 16px;
    border-radius: 0 6px 6px 0;
    margin: 16px 0 20px;
}

.rs-spec-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin-bottom: 22px;
}

.rs-spec-table th,
.rs-spec-table td {
    border: 1px solid var(--rs-line);
    padding: 9px 12px;
}

.rs-spec-table th {
    background: var(--rs-bg);
    color: var(--rs-heading);
    width: 26%;
    font-weight: 600;
    white-space: nowrap;
}

.rs-product-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.rs-product-actions .btn {
    padding: 10px 24px;
}

/* ---------- 产品详情（重构） ---------- */
.rs-pd-gallery {
    position: relative;
}

.rs-gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(1, 69, 141, .12);
    border-radius: 50%;
    background: rgba(255, 255, 255, .92);
    color: var(--rs-heading);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    opacity: 0;
    transition: opacity .2s ease, background-color .2s ease, color .2s ease;
}

.rs-gallery-nav.is-prev {
    left: 12px;
}

.rs-gallery-nav.is-next {
    right: 12px;
}

.rs-gallery-main:hover .rs-gallery-nav,
.rs-gallery-nav:focus-visible {
    opacity: 1;
}

.rs-gallery-nav:hover {
    background: var(--rs-blue);
    color: #fff;
}

.rs-gallery-count {
    position: absolute;
    right: 12px;
    bottom: 12px;
    z-index: 3;
    background: rgba(12, 30, 52, .62);
    color: #fff;
    font-size: 12px;
    line-height: 1;
    padding: 6px 10px;
    border-radius: 999px;
    letter-spacing: .04em;
}

.rs-gallery-main img.is-switching {
    opacity: .35;
}

@media (hover: none) {
    .rs-gallery-nav {
        opacity: 1;
        width: 34px;
        height: 34px;
        font-size: 16px;
    }
}

.rs-pd-flag {
    position: absolute;
    z-index: 2;
    top: 14px;
    left: 14px;
    background: var(--rs-red);
    color: #fff;
    font-size: 12px;
    line-height: 1;
    padding: 8px 12px;
    border-radius: 999px;
    box-shadow: 0 6px 16px rgba(230, 0, 18, .28);
}

.rs-gallery-main img {
    transition: transform .35s ease, opacity .18s ease;
}

.rs-gallery-main:hover img {
    transform: scale(1.04);
}

.rs-pd-service {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 12px;
}

.rs-pd-service div {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    background: var(--rs-bg);
    border: 1px solid var(--rs-line);
    border-radius: 8px;
    padding: 11px 8px;
    font-size: 12.5px;
    color: var(--rs-heading);
}

.rs-pd-service i {
    color: var(--rs-blue);
    font-size: 16px;
}

.rs-pd-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-bottom: 16px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--rs-line);
    font-size: 12.5px;
    color: #8b97a6;
}

.rs-pd-meta strong {
    color: var(--rs-heading);
    font-weight: 600;
}

.rs-pd-highlights {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 22px;
}

.rs-pd-highlight {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: 8px;
    padding: 10px 14px;
    min-width: 0;
}

.rs-pd-highlight span {
    display: block;
    font-size: 11.5px;
    color: #98a4b2;
}

.rs-pd-highlight strong {
    display: block;
    font-size: 14px;
    color: var(--rs-heading);
    font-weight: 600;
    line-height: 1.5;
    word-break: break-word;
}

.rs-pd-points li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
    font-size: 13px;
    color: #6c7785;
}

.rs-pd-points i {
    position: absolute;
    left: 0;
    top: 3px;
    color: var(--rs-blue);
}

.rs-pd-detail {
    background: var(--rs-bg);
    padding: 10px 0 48px;
}

.rs-pd-block {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    overflow: hidden;
    margin-bottom: 22px;
}

.rs-pd-block-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--rs-line);
}

.rs-pd-block-head h2 {
    position: relative;
    margin: 0;
    padding-left: 14px;
    font-size: 19px;
}

.rs-pd-block-head h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: var(--rs-blue);
}

.rs-pd-block-head .eyebrow {
    font-size: 11px;
    letter-spacing: 2px;
    color: #a9b4c1;
}

.rs-pd-block-body {
    padding: 22px 24px;
}

.rs-content-flat {
    border: 0;
    border-radius: 0;
    padding: 0;
    background: transparent;
    overflow-x: auto;
}

.rs-pd-note {
    font-size: 12.5px;
    color: #98a4b2;
    margin: 14px 0 0;
}

.rs-pd-empty {
    text-align: center;
    padding: 26px 10px 18px;
}

.rs-pd-empty > i {
    display: block;
    margin-bottom: 12px;
    font-size: 34px;
    color: var(--rs-blue);
    opacity: .35;
}

.rs-pd-empty p {
    max-width: 640px;
    margin: 0 auto 8px;
    color: var(--rs-text);
}

@media (min-width: 992px) {
    .rs-pd-sticky {
        position: sticky;
        top: 152px;
    }
}

@media (max-width: 991.98px) {
    .rs-pd-service {
        gap: 8px;
    }

    .rs-pd-service div {
        flex-direction: column;
        gap: 2px;
        padding: 9px 4px;
        font-size: 11.5px;
        text-align: center;
    }

    .rs-pd-block-head,
    .rs-pd-block-body {
        padding-left: 16px;
        padding-right: 16px;
    }

    .rs-product-actions .btn {
        flex: 1 1 auto;
    }
}

/* ---------- 询价表单 ---------- */
.rs-form-card {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: var(--rs-radius);
    padding: 24px;
}

.rs-form-card h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.rs-form-card .sub {
    font-size: 12.5px;
    color: #93a0af;
    margin-bottom: 18px;
}

.rs-form-card .form-control,
.rs-form-card .form-select {
    font-size: 14px;
    border-color: #dde4ec;
    padding: 9px 12px;
}

.rs-form-card .form-control:focus,
.rs-form-card .form-select:focus {
    border-color: var(--rs-blue);
    box-shadow: 0 0 0 .2rem rgba(1, 69, 141, .1);
}

.rs-form-card .form-label {
    font-size: 13px;
    color: var(--rs-heading);
    margin-bottom: 5px;
}

.rs-form-agree {
    font-size: 12px;
    color: #9aa6b4;
}

/* ---------- 分页 ---------- */
.rs-pagination {
    margin: 30px 0 0;
    gap: 6px;
}

.rs-pagination .page-link {
    color: var(--rs-heading);
    border: 1px solid var(--rs-line);
    border-radius: 6px;
    min-width: 38px;
    text-align: center;
    font-size: 14px;
    padding: 7px 10px;
}

.rs-pagination .page-link:hover {
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    border-color: var(--rs-blue-soft);
}

.rs-pagination .active .page-link {
    background: var(--rs-blue);
    border-color: var(--rs-blue);
    color: #fff;
}

.rs-pagination .disabled .page-link {
    color: #bcc5d0;
    background: #fff;
}

/* ---------- 空状态 ---------- */
.rs-empty {
    text-align: center;
    padding: 60px 20px;
    color: #9aa6b4;
}

.rs-empty .bi {
    font-size: 42px;
    color: #c9d4e0;
    display: block;
    margin-bottom: 10px;
}

/* ---------- 返回顶部 ---------- */
.rs-backtop {
    position: fixed;
    right: 18px;
    bottom: 90px;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: var(--rs-blue);
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    border: 0;
    z-index: 1036;
    box-shadow: 0 6px 16px rgba(1, 69, 141, .25);
}

.rs-backtop.show {
    display: flex;
}

.rs-backtop:hover {
    background: var(--rs-blue-light);
    color: #fff;
}

@media (max-width: 991.98px) {
    .rs-backtop {
        bottom: 78px;
        right: 12px;
        width: 40px;
        height: 40px;
    }
}

/* ---------- 首页产品中心底色 ---------- */
.rs-product-section {
    background: var(--rs-bg);
    position: relative;
}

.rs-product-section::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 210px;
    background: linear-gradient(180deg, rgba(1, 69, 141, .06) 0%, rgba(1, 69, 141, 0) 100%);
    pointer-events: none;
}

/* 文字截断 */
.rs-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rs-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 语言切换 ---------- */
.rs-lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-right: 14px;
}

.rs-lang-switch a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 8px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, .22);
    background: rgba(255, 255, 255, .1);
    color: rgba(255, 255, 255, .86);
    font-size: 12px;
    line-height: 1.7;
}

.rs-lang-switch a img {
    width: 18px;
    height: 12px;
    border-radius: 2px;
    display: block;
}

.rs-lang-switch a:hover {
    color: #fff;
    background: rgba(255, 255, 255, .22);
}

.rs-lang-switch a.active {
    background: #fff;
    color: var(--rs-blue-deep);
    border-color: #fff;
    font-weight: 600;
}

.rs-lang-switch a.active:hover {
    color: var(--rs-blue-deep);
}

/* ---------- 文章详情（优化版） ---------- */
.rs-article-section {
    background: var(--rs-bg);
    padding: 30px 0 56px;
}

.rs-article-card {
    background: #fff;
    border: 1px solid var(--rs-line);
    border-radius: 14px;
    padding: 36px 40px 30px;
    box-shadow: 0 8px 26px rgba(1, 69, 141, .05);
}

.rs-article-head {
    margin-bottom: 24px;
}

.rs-article-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 14px;
    padding: 5px 12px;
    border-radius: 999px;
    background: var(--rs-blue-soft);
    color: var(--rs-blue);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
}

.rs-article-cat:hover {
    background: var(--rs-blue);
    color: #fff;
}

.rs-article-card .rs-article-title {
    font-size: clamp(24px, 2.4vw, 32px);
    line-height: 1.38;
    letter-spacing: .2px;
    margin-bottom: 16px;
}

.rs-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 22px;
    padding-bottom: 0;
    border-bottom: 0;
    margin-bottom: 0;
    font-size: 12.5px;
    color: #98a4b2;
}

.rs-article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.rs-article-meta .bi {
    color: var(--rs-blue);
    opacity: .55;
}

.rs-article-cover {
    margin: 0 0 26px;
    border-radius: 10px;
    overflow: hidden;
    background: #f1f5fa;
}

.rs-article-cover img {
    display: block;
    width: 100%;
    max-height: 420px;
    object-fit: cover;
}

.rs-article-lead {
    position: relative;
    background: linear-gradient(180deg, #f4f8fd 0%, #fbfdff 100%);
    border: 1px solid #e2ecf7;
    border-left: 4px solid var(--rs-blue);
    border-radius: 0 8px 8px 0;
    padding: 16px 22px 16px 20px;
    margin-bottom: 28px;
}

.rs-article-lead .label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--rs-blue);
    margin-bottom: 7px;
}

.rs-article-lead .label .bi {
    font-size: 15px;
    line-height: 1;
}

.rs-article-lead p {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.9;
    color: #5b6572;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rs-article-card .rs-article-body {
    font-size: 16px;
    line-height: 1.95;
    color: #3f4a59;
}

.rs-article-card .rs-article-body p {
    margin-bottom: 18px;
}

.rs-article-card .rs-article-body img {
    display: block;
    margin: 24px auto;
    border-radius: 8px;
}

.rs-article-card .rs-article-body a {
    color: var(--rs-blue);
    border-bottom: 1px solid rgba(1, 69, 141, .22);
}

.rs-article-card .rs-article-body h2 {
    position: relative;
    padding-left: 14px;
    font-size: 21px;
    margin: 32px 0 16px;
}

.rs-article-card .rs-article-body h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 7px;
    bottom: 7px;
    width: 4px;
    border-radius: 2px;
    background: var(--rs-blue);
}

.rs-article-card .rs-article-body h3 {
    font-size: 18px;
    margin: 26px 0 14px;
}

.rs-article-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    background: linear-gradient(120deg, var(--rs-blue) 0%, var(--rs-blue-deep) 100%);
    border-radius: 12px;
    padding: 22px 26px;
    margin: 34px 0 26px;
}

.rs-article-cta h3 {
    color: #fff;
    font-size: 17px;
    margin: 0 0 5px;
}

.rs-article-cta p {
    margin: 0;
    font-size: 13px;
    color: rgba(255, 255, 255, .72);
}

.rs-article-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.rs-article-cta .btn {
    font-size: 13.5px;
    padding: 9px 18px;
    white-space: nowrap;
}

.rs-article-cta .btn-light {
    color: var(--rs-blue);
    font-weight: 600;
}

.rs-article-cta .btn-outline-light {
    border-color: rgba(255, 255, 255, .5);
}

.rs-article-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    padding-top: 24px;
    border-top: 1px solid var(--rs-line);
}

.rs-article-pager-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
    padding: 14px 18px;
    border: 1px solid var(--rs-line);
    border-radius: 9px;
    background: #fff;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

a.rs-article-pager-item:hover {
    border-color: rgba(1, 69, 141, .35);
    box-shadow: 0 8px 20px rgba(1, 69, 141, .07);
    transform: translateY(-1px);
}

.rs-article-pager-item .label {
    font-size: 11.5px;
    letter-spacing: .5px;
    color: #9dabb9;
}

.rs-article-pager-item .title {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.55;
    color: var(--rs-heading);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

a.rs-article-pager-item:hover .title {
    color: var(--rs-blue);
}

.rs-article-pager-item.next {
    text-align: right;
}

.rs-article-pager-item.is-empty {
    background: #fafbfd;
    border-style: dashed;
}

.rs-related-item {
    display: flex;
    gap: 12px;
    padding: 12px 18px;
    border-bottom: 1px solid var(--rs-line);
    color: inherit;
}

.rs-related-item:last-child {
    border-bottom: 0;
}

.rs-related-item:hover {
    background: var(--rs-blue-soft);
}

.rs-related-thumb {
    flex: 0 0 72px;
    width: 72px;
    height: 54px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--rs-bg);
}

.rs-related-thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rs-related-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.rs-related-title {
    font-size: 13.5px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--rs-heading);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rs-related-item:hover .rs-related-title {
    color: var(--rs-blue);
}

.rs-related-date {
    font-size: 11.5px;
    color: #a7b2bf;
}

.rs-sidebar-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 12px;
    font-size: 13px;
    color: var(--rs-blue);
    background: #fafcff;
    border-top: 1px solid var(--rs-line);
}

.rs-article-help {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    border: 1px solid #d8e6f6;
    border-radius: var(--rs-radius);
    background: var(--rs-blue-soft);
}

.rs-article-help > .bi {
    font-size: 30px;
    color: var(--rs-blue);
    opacity: .8;
}

.rs-article-help small {
    display: block;
    font-size: 12px;
    color: #8b97a6;
}

.rs-article-help strong {
    display: block;
    font-size: 20px;
    line-height: 1.35;
    letter-spacing: .4px;
    color: var(--rs-blue);
}

.rs-article-help span {
    font-size: 11.5px;
    color: #9aa6b4;
}

@media (max-width: 767.98px) {
    .rs-article-section {
        padding: 18px 0 40px;
    }

    .rs-article-card {
        padding: 22px 18px 20px;
        border-radius: 12px;
    }

    .rs-article-card .rs-article-title {
        font-size: 22px;
    }

    .rs-article-cover {
        margin-bottom: 20px;
        border-radius: 8px;
    }

    .rs-article-cover img {
        max-height: 240px;
    }

    .rs-article-lead {
        padding: 14px 16px 14px 15px;
        margin-bottom: 22px;
    }

    .rs-article-card .rs-article-body {
        font-size: 15.5px;
        line-height: 1.9;
    }

    .rs-article-cta {
        padding: 18px;
    }

    .rs-article-cta > div {
        flex: 1 1 100%;
    }

    .rs-article-cta-actions .btn {
        flex: 1 1 100%;
    }

    .rs-article-pager {
        grid-template-columns: 1fr;
    }

    .rs-article-pager-item.next {
        text-align: left;
    }
}