/* 公司官网共享样式 - 主题色 #4a6b8d */
:root {
    --body-bg: #f2f4f6;
    --panel-bg: #fff;
    --text-color: #1a1a1a;
    --text-muted: #5c6b7a;
    --text-gray: #6a7a8a;
    --brand-primary: #4a6b8d;
    --brand-primary-hover: #3a5672;
    --brand-light: #e8eef4;
    --link-color: #4a6b8d;
    --link-hover: #3a5672;
    --navbar-bg: #fff;
    --navbar-border: #e2e6eb;
    --navbar-link: #1a1a1a;
    --navbar-link-hover-bg: #f5f7f9;
    --navbar-link-active-bg: #e8eef4;
    --panel-border: #e2e6eb;
    --panel-radius: 10px;
    --border-radius: 8px;
    --default-border: #e2e6eb;
    --heading-bg: #f0f4f8;
    --state-primary-bg: #e8eef4;
    --box-shadow: 0 1px 4px rgba(74, 107, 141, 0.08);
    --font-family: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-size-base: 15px;
    --line-height-base: 1.6;
    --panel-padding: 18px;
    --container-padding: 20px;
    --vertical-gap: 20px;
    --input-height: 38px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
/* 锚点目标上留出固定导航栏高度，避免标题被遮挡 */
[id] { scroll-margin-top: 80px; }
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background: var(--body-bg);
}
a { color: var(--link-color); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--navbar-bg);
    color: var(--navbar-link);
    padding: 0 var(--container-padding);
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 100;
    border-bottom: 1px solid var(--navbar-border);
}
.logo { font-size: 1.1rem; font-weight: 600; }
.logo a { color: var(--navbar-link); }
.logo a:hover { text-decoration: none; color: var(--brand-primary); }
.logo img { height: 38px; vertical-align: middle; }
.nav { display: flex; gap: 0; align-items: center; flex-wrap: wrap; }
.nav a {
    color: var(--navbar-link);
    padding: 20px 16px;
    font-weight: 500;
}
.nav a:hover { text-decoration: none; background: var(--navbar-link-hover-bg); color: var(--brand-primary); }
.nav a.active { background: var(--navbar-link-active-bg); color: var(--brand-primary); }
.nav-cta {
    display: inline-block;
    background: var(--brand-primary);
    color: #fff !important;
    margin-left: 8px;
    padding: 10px 20px !important;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none !important;
    transition: background 0.2s ease, color 0.2s ease;
}
/* 提高优先级，覆盖 .nav a:hover 的浅色背景，保持与免费咨询按钮一致的深色悬浮 */
.nav a.nav-cta:hover {
    background: var(--brand-primary-hover) !important;
    color: #fff !important;
    text-decoration: none !important;
}

/* 产品中心下拉 */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger { display: inline-block; }
.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 140px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 6px 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 101;
}
.nav-dropdown:hover .nav-dropdown-menu { opacity: 1; visibility: visible; }
.nav-dropdown-menu a {
    display: block;
    padding: 10px 18px;
    white-space: nowrap;
    border-radius: 0;
}
.nav-dropdown-menu a:hover { background: var(--navbar-link-hover-bg); color: var(--brand-primary); }

/* 移动端：汉堡菜单按钮（桌面隐藏） */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--navbar-link);
    z-index: 102;
    border-radius: var(--border-radius);
}
.nav-toggle:hover { background: var(--navbar-link-hover-bg); color: var(--brand-primary); }
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端遮罩（点击关闭菜单） */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 98;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}
@media (max-width: 768px) {
    .nav-overlay { display: block; }
    body.nav-open .nav-overlay { opacity: 1; pointer-events: auto; }
}

.hero {
    min-height: 62vh;
    background: linear-gradient(180deg, var(--heading-bg) 0%, var(--body-bg) 100%);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    border-bottom: 1px solid var(--default-border);
}
.hero h1 { font-size: 1.9rem; font-weight: 600; margin-bottom: 1rem; color: var(--text-color); }
.hero p { font-size: var(--font-size-base); color: var(--text-muted); max-width: 580px; margin: 0 auto 1.5rem; line-height: 1.7; }
.hero-custom {
    font-size: 1rem;
    color: var(--brand-primary);
    font-weight: 500;
    margin: -0.5rem auto 1.25rem !important;
    padding: 0.5rem 1rem;
    background: var(--state-primary-bg);
    border: 1px solid var(--brand-primary);
    border-radius: var(--border-radius);
    display: inline-block;
    max-width: 580px;
}
.hero-custom strong { color: var(--brand-primary-hover); }
.hero .cta {
    display: inline-block;
    background: var(--brand-primary);
    color: #fff;
    padding: 10px 22px;
    border-radius: var(--border-radius);
    font-weight: 500;
}
.hero .cta:hover { background: var(--brand-primary-hover); text-decoration: none; color: #fff; }
.cta {
    display: inline-block;
    background: var(--brand-primary);
    color: #fff;
    padding: 10px 22px;
    border-radius: var(--border-radius);
    font-weight: 500;
}
.cta:hover { background: var(--brand-primary-hover); text-decoration: none; color: #fff; }
.cta-secondary {
    margin-left: 12px;
    background: var(--brand-primary);
    color: #fff;
    border: 1px solid var(--brand-primary);
    padding: 10px 22px;
    border-radius: var(--border-radius);
}
.cta-secondary:hover { background: var(--brand-primary-hover); color: #fff; text-decoration: none; border-color: var(--brand-primary-hover); }
.hero .cta-secondary {
    margin-left: 12px;
    background: var(--brand-primary);
    color: #fff;
    border: 1px solid var(--brand-primary);
    padding: 10px 22px;
    border-radius: var(--border-radius);
}
.hero .cta-secondary:hover { background: var(--brand-primary-hover); color: #fff; text-decoration: none; border-color: var(--brand-primary-hover); }
.hero-banner {
    max-width: 820px;
    margin: 2rem auto 0;
    border: 1px solid var(--default-border);
    border-radius: var(--panel-radius);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--panel-bg);
    box-shadow: var(--box-shadow);
}
.hero-banner img { max-width: 100%; height: auto; border-radius: var(--border-radius); }
.hero-banner .placeholder { color: var(--text-muted); font-size: 0.9rem; }

section {
    max-width: 1000px;
    margin: 0 auto;
    padding: calc(var(--vertical-gap) * 2) 2rem;
}
section h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    text-align: center;
}
section .section-desc {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 1.5rem;
    color: var(--text-muted);
}

.about { background: var(--body-bg); }
.about-content { max-width: 680px; margin: var(--vertical-gap) auto 0; }
.about-content p { margin-bottom: 1rem; color: var(--text-muted); }
.about-content .highlight { color: var(--brand-primary); font-weight: 500; }

.products-section { background: var(--body-bg); }
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--vertical-gap);
    margin-top: var(--vertical-gap);
}
.product-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: var(--panel-padding);
    transition: box-shadow 0.2s, border-color 0.2s;
}
.product-card:hover {
    box-shadow: 0 4px 16px rgba(74, 107, 141, 0.12);
    border-color: var(--brand-primary);
}
.product-card .icon {
    width: 52px;
    height: 52px;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    background: var(--state-primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.product-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-color); display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; }
.product-card-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--brand-primary);
    background: var(--state-primary-bg);
    border: 1px solid var(--brand-primary);
    padding: 2px 8px;
    border-radius: 4px;
    white-space: nowrap;
}
.product-card p { font-size: var(--font-size-base); margin: 0; color: var(--text-muted); }
.product-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}
.product-card-link:hover { text-decoration: none; color: inherit; }
.product-card .link { margin-top: 0.75rem; font-weight: 500; color: var(--brand-primary); }
.product-card-link:hover .link { color: var(--link-hover); }
.product-card-quick {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--panel-border);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    font-size: 0.9rem;
}
.product-card-quick a {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 500;
    font-size: 0.85rem;
    background: var(--state-primary-bg);
    color: var(--brand-primary);
    border: 1px solid var(--brand-primary);
}
.product-card-quick a:hover {
    background: var(--brand-primary);
    color: #fff;
    text-decoration: none;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--vertical-gap);
    margin-top: var(--vertical-gap);
}
.service-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: var(--panel-padding);
    text-align: center;
    box-shadow: var(--box-shadow);
}
.service-card .icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
    border-radius: var(--border-radius);
    background: var(--state-primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.service-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-color); }
.service-card p { font-size: var(--font-size-base); margin: 0; color: var(--text-muted); }

.why-us { background: var(--body-bg); }
.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--vertical-gap);
    margin-top: var(--vertical-gap);
}
@media (max-width: 640px) { .why-grid { grid-template-columns: 1fr; } }
.why-item { display: flex; gap: 1rem; align-items: flex-start; }
.why-item .num { font-size: 1.25rem; font-weight: 600; color: var(--brand-primary); flex-shrink: 0; }
.why-item h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.25rem; color: var(--text-color); }
.why-item p { font-size: var(--font-size-base); margin: 0; color: var(--text-muted); }
.why-item .why-benefit { font-size: 0.9rem; color: var(--brand-primary); margin-top: 0.4rem; font-weight: 500; }

.contact { text-align: center; padding: calc(var(--vertical-gap) * 2) 2rem; background: var(--body-bg); }
.contact p { margin-bottom: 0.5rem; }
.contact .email { font-size: 1.1rem; font-weight: 600; }
.contact-in-about { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--panel-border); text-align: center; }
.contact-in-about h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--text-color); }
.contact-in-about p { margin-bottom: 0.5rem; }
.contact-in-about .email { font-size: 1.05rem; font-weight: 600; }
.wechat-id-row { display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; justify-content: center; }
.phone-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-color);
}
.phone-text { font-weight: 700; color: var(--text-color); }
.copy-btn {
    font-size: 0.85rem;
    padding: 4px 12px;
    border: 1px solid var(--brand-primary);
    background: var(--brand-primary);
    color: #fff;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
}
.copy-btn:hover { background: var(--brand-primary-hover); color: #fff; border-color: var(--brand-primary-hover); }
.copy-btn.copied { background: var(--brand-primary-hover); color: #fff; border-color: var(--brand-primary-hover); }

/* 客户案例 */
.cases-section { background: var(--body-bg); }
.cases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--vertical-gap); margin-top: var(--vertical-gap); }
.case-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: var(--panel-padding);
    box-shadow: var(--box-shadow);
}
.case-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-color); }
.case-card p { font-size: var(--font-size-base); margin: 0; color: var(--text-muted); }
.case-card .tag { font-size: 0.8rem; color: var(--brand-primary); margin-bottom: 0.5rem; }

/* 常见问题 FAQ */
.faq-section { background: var(--body-bg); }
.faq-list { max-width: 640px; margin: var(--vertical-gap) auto 0; }
.faq-item { border-bottom: 1px solid var(--panel-border); padding: 1rem 0; }
.faq-item:first-child { padding-top: 0; }
.faq-q { font-weight: 600; color: var(--text-color); margin-bottom: 0.5rem; }
.faq-a { font-size: var(--font-size-base); color: var(--text-muted); margin: 0; }

/* 免费试用选择页 */
.trial-options-list { list-style: none; margin: 0; padding: 0; }
.trial-options-list li { margin-bottom: 1rem; padding: 0.75rem 0; border-bottom: 1px solid var(--panel-border); }
.trial-options-list li:last-child { border-bottom: none; margin-bottom: 0; }
.trial-options-list a { font-weight: 600; }

/* 下载页：醒目下载项 */
.download-items { list-style: none; margin: 0; padding: 0; }
.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    background: var(--heading-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius);
    flex-wrap: wrap;
}
.download-item:last-child { margin-bottom: 0; }
.download-item-info { flex: 1; min-width: 0; }
.download-item-title { font-weight: 600; font-size: 1rem; display: block; color: var(--text-color); }
.download-item-desc { font-size: 0.9rem; color: var(--text-muted); }
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    background: var(--brand-primary);
    color: #fff !important;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none !important;
    white-space: nowrap;
    transition: background 0.2s ease, transform 0.15s ease;
}
.download-btn:hover {
    background: var(--brand-primary-hover);
    color: #fff !important;
    text-decoration: none !important;
    transform: translateY(-1px);
}
.download-btn::before {
    content: "↓";
    font-size: 1.1em;
}

.footer {
    background: var(--navbar-bg);
    color: var(--text-muted);
    text-align: center;
    padding: 1.25rem 2rem;
    font-size: 0.875rem;
    border-top: 1px solid var(--navbar-border);
}
.footer a { color: var(--link-color); }
.footer a:hover { color: var(--link-hover); }
.footer .footer-beian {
    display: inline-flex;
    align-items: center;
    margin-left: 0.65em;
    vertical-align: middle;
    transform: translateY(-2px);
}
.footer .footer-beian img {
    width: 14px;
    height: auto;
    margin-right: 5px;
    flex-shrink: 0;
}
.wechat-qr { margin-top: 1rem; }
.wechat-qr img { display: block; margin: 0 auto 0.25rem; width: 120px; height: 120px; object-fit: contain; }
.wechat-qr span { font-size: 0.8rem; color: var(--text-muted); }

.float-wechat-wrap {
    position: fixed;
    right: 20px;
    bottom: 24px;
    z-index: 999;
}
.float-wechat-trigger {
    display: none;
    padding: 8px 14px;
    background: var(--brand-primary);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.float-wechat-trigger:hover { background: var(--brand-primary-hover); color: #fff; }
.float-wechat-wrap.closed .float-wechat-pop { display: none; }
.float-wechat-wrap.closed .float-wechat-trigger { display: inline-block; }
.float-wechat-pop {
    position: relative;
    padding: 14px;
    padding-top: 32px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.float-wechat-close {
    position: absolute;
    top: 8px;
    right: 10px;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    border-radius: var(--border-radius);
}
.float-wechat-close:hover { color: var(--text-color); background: var(--navbar-link-hover-bg); }
.float-wechat-pop .service_t1 { font-size: 14px; color: var(--text-color); margin-bottom: 4px; }
.float-wechat-pop .service_t2 { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
.float-wechat-id-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 10px;
    font-size: 13px;
}
.float-wechat-id-row .wechat-id-text { font-weight: 600; color: var(--text-color); }
.float-wechat-id-row .copy-btn { padding: 3px 10px; font-size: 12px; }
.float-wechat-pop .code_img { display: block; width: 168px; height: 168px; margin: 0 auto 10px; object-fit: contain; }
.float-wechat-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
}
.float-wechat-actions .save-qr-btn,
.float-wechat-actions .copy-btn { margin: 0; }
.float-wechat-actions .save-qr-btn,
.float-wechat-actions .copy-btn.float-wechat-copy-btn {
    min-height: 36px;
    height: 36px;
    font-size: 13px;
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}
.save-qr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    padding: 0 14px;
    min-height: 36px;
    height: 36px;
    line-height: 1;
    background: var(--brand-primary);
    color: #fff;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
}
.save-qr-btn:hover { background: var(--brand-primary-hover); color: #fff; text-decoration: none; }

/* 产品详情页：多产品块 */
.product-block {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    padding: 2rem;
    margin-bottom: var(--vertical-gap);
    box-shadow: var(--box-shadow);
}
.product-block h3 { font-size: 1.25rem; color: var(--brand-primary); margin-bottom: 0.75rem; }
.product-block ul { margin: 0.5rem 0 0 1.25rem; color: var(--text-muted); }
.product-block p { color: var(--text-muted); margin-bottom: 0.5rem; }
.product-block .product-price {
    font-size: 1.05rem;
    color: var(--text-color);
    background: var(--state-primary-bg);
    border: 1px solid var(--brand-primary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}
.product-block table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.product-block th,
.product-block td {
    border: 1px solid var(--panel-border);
    padding: 10px 12px;
    text-align: left;
}
.product-block th {
    background: var(--heading-bg);
    color: var(--text-color);
    font-weight: 600;
}
.product-block tr:nth-child(even) { background: rgba(0,0,0,0.02); }

/* 产品页顶部锚点导航 */
.product-anchor-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1rem;
    margin-bottom: 2rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--panel-border);
}
.product-anchor-nav a {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 999px;
    font-weight: 500;
    font-size: 0.9rem;
    background: var(--state-primary-bg);
    color: var(--brand-primary);
    border: 1px solid var(--brand-primary);
}
.product-anchor-nav a:hover {
    background: var(--brand-primary);
    color: #fff;
    text-decoration: none;
}

/* 产品详情页：左侧侧栏布局（可复用） */
.product-page-outer {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    width: 100%;
    max-width: min(1320px, 100%);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
    box-sizing: border-box;
}
.product-page-outer > .products-section {
    flex: 1 1 auto;
    width: 100%;
    max-width: 1180px;
    min-width: 0;
}
.product-sidebar {
    flex: 0 0 10.5rem;
    position: sticky;
    top: 80px;
    align-self: flex-start;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    z-index: 5;
}
.product-anchor-nav--sidebar {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
    margin: 0;
    padding: 0.75rem 0.65rem;
    border: 1px solid var(--default-border);
    border-radius: var(--border-radius);
    background: var(--panel-bg);
    box-shadow: var(--box-shadow);
}
.product-anchor-nav--sidebar a {
    display: block;
    padding: 0.45rem 0.6rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    text-align: left;
    background: var(--state-primary-bg);
    color: var(--brand-primary);
    border: 1px solid transparent;
}
.product-anchor-nav--sidebar a:hover {
    background: var(--brand-primary);
    color: #fff;
    text-decoration: none;
    border-color: var(--brand-primary);
}

/* 产品页底部快捷入口 */
.product-quick-links {
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--panel-border);
    text-align: center;
}
.product-quick-links p { margin-bottom: 0.5rem; font-size: 0.9rem; color: var(--text-muted); }
.product-quick-links .links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem 1.25rem;
    margin-top: 0.75rem;
}
.product-quick-links .links a { font-weight: 500; }

/* 非首页左上角返回 */
.page-back {
    padding-top: 5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.page-back a {
    color: var(--text-muted);
    font-weight: 500;
}
.page-back a:hover { color: var(--brand-primary); text-decoration: none; }

.page-title { padding-top: 0.5rem; padding-bottom: 0.5rem; text-align: center; }
.page-title h1 { font-size: 1.75rem; font-weight: 600; color: var(--text-color); }
.page-title .section-desc { margin-top: 0.5rem; }
.page-title-price {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 1.25rem;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--brand-primary);
    background: var(--state-primary-bg);
    border: 1px solid var(--brand-primary);
    border-radius: var(--border-radius);
}

/* 表格横向滚动（小屏不撑破布局） */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0.75rem 0;
}
.table-wrap table { min-width: 480px; }

/* ========== 移动端整体优化（≤768px） ========== */
@media (max-width: 768px) {
    :root {
        --container-padding: 14px;
        --panel-padding: 14px;
        --vertical-gap: 16px;
    }
    body { font-size: 15px; }
    .header { padding: 0 var(--container-padding); min-height: 56px; }
    .logo img { height: 32px; }

    /* 显示汉堡按钮；打开菜单时禁止背景滚动 */
    .nav-toggle { display: flex; }
    body.nav-open { overflow: hidden; }

    /* 导航改为右侧抽屉 */
    .nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(300px, 85vw);
        max-width: 300px;
        flex-direction: column;
        align-items: stretch;
        background: var(--panel-bg);
        border-left: 1px solid var(--panel-border);
        box-shadow: -4px 0 20px rgba(0,0,0,0.1);
        padding: 60px 0 1.5rem;
        z-index: 101;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        overflow-y: auto;
    }
    body.nav-open .nav { transform: translateX(0); }
    .nav a {
        display: block;
        padding: 14px 20px;
        font-size: 1rem;
        border-bottom: 1px solid var(--navbar-border);
    }
    .nav a:hover { background: var(--navbar-link-hover-bg); }
    /* 移动端下拉改为始终展开 */
    .nav-dropdown { position: static; }
    .nav-dropdown-trigger { display: block; }
    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 1rem;
        background: var(--heading-bg);
    }
    .nav-dropdown-menu a { padding: 12px 20px; font-size: 0.95rem; }
    .nav-cta { margin: 0.5rem 20px 0; text-align: center; display: block !important; }

    /* Hero */
    .hero { min-height: 50vh; padding: 5rem 1rem 3rem; }
    .hero h1 { font-size: 1.4rem; line-height: 1.35; }
    .hero p { font-size: 0.95rem; }
    .hero .cta, .hero .cta-secondary { display: inline-block; margin-top: 0.5rem; }
    .hero-banner { margin-top: 1.5rem; }
    .hero-banner img { max-width: 100%; }

    /* 区块通用 */
    .container, .products-section, .why-us, .contact, .faq-section, .cases-section { padding-left: var(--container-padding); padding-right: var(--container-padding); }
    section h2 { font-size: 1.35rem; }
    .section-desc { font-size: 0.95rem; }

    /* 产品网格 */
    .products-grid { grid-template-columns: 1fr; gap: var(--vertical-gap); }
    .product-card { padding: var(--panel-padding); }
    .product-card-quick { flex-wrap: wrap; gap: 0.5rem; }
    .product-card-quick a { padding: 6px 12px; font-size: 0.9rem; }

    /* 功能与优势 */
    .why-grid { grid-template-columns: 1fr; gap: var(--vertical-gap); }
    .why-item { gap: 0.75rem; }

    /* 锚点偏移（导航栏变矮） */
    [id] { scroll-margin-top: 60px; }

    /* 产品详情页 */
    .page-back { padding-top: 4rem; }
    .products-section .product-block { padding: 1.25rem; }
    .page-title h1 { font-size: 1.4rem; }
    .page-title-price { font-size: 0.95rem; padding: 0.5rem 1rem; }
    .product-anchor-nav { gap: 0.5rem; padding: 0.5rem 0; }
    .product-anchor-nav a { padding: 8px 14px; font-size: 0.85rem; }
    .product-page-outer {
        flex-direction: column;
        gap: 0.75rem;
        max-width: 100%;
    }
    .product-page-outer > .products-section { max-width: 100%; }
    .product-sidebar {
        position: sticky;
        top: 72px;
        flex: none;
        width: 100%;
        max-height: none;
        overflow: visible;
        z-index: 40;
    }
    .product-anchor-nav--sidebar {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-start;
        padding: 0.5rem 0.6rem;
    }
    .product-anchor-nav--sidebar a {
        flex: 1 1 auto;
        min-width: 5.5rem;
        text-align: center;
        font-size: 0.8rem;
        padding: 0.4rem 0.5rem;
    }
    .product-block th, .product-block td { padding: 8px 10px; font-size: 0.85rem; }

    /* 下载页 */
    .download-item { flex-direction: column; align-items: stretch; text-align: center; }
    .download-btn { align-self: center; min-height: 44px; }

    /* 试用页 */
    .trial-options-list li { padding: 1rem 0; }

    /* 页脚 */
    .footer { padding: 1rem var(--container-padding); font-size: 0.85rem; }
    .wechat-qr img { width: 100px; height: 100px; }
    .float-wechat-wrap { right: 12px; bottom: 16px; }
    .float-wechat-pop .code_img { width: 140px; height: 140px; }

    /* 触控友好：按钮最小高度 */
    .cta, .nav-cta, .download-btn { min-height: 44px; line-height: 1.2; display: inline-flex; align-items: center; justify-content: center; }
}

/* 更小屏（≤480px）微调 */
@media (max-width: 480px) {
    .hero h1 { font-size: 1.25rem; }
    section h2 { font-size: 1.2rem; }
    .product-block { padding: 1rem !important; }
    .table-wrap table { min-width: 360px; font-size: 0.8rem; }
    .product-block th, .product-block td { padding: 6px 8px; font-size: 0.8rem; }
}