/* ============================================
   app.css - 全站公共样式
   配色源自 Logo（鼎达福联深蓝+橙+绿）+ Banner 2.5D 冰蓝科技风
   所有自定义类名加 zh_ 前缀
   ============================================ */

/* --- CSS 变量 --- */
:root {
    /* 主色（Logo提取） */
    --zh-blue: #1A3F6F;
    --zh-dark-blue: #0F2340;
    --zh-orange: #E8722A;
    --zh-orange-light: #F5A623;
    --zh-green: #5EC26A;
    --zh-sky: #4A9FE5;
    --zh-light-blue: #63B3ED;

    /* 渐变 */
    --zh-gradient: linear-gradient(135deg, #1A3F6F 0%, #2B7BC8 100%);
    --zh-gradient-orange: linear-gradient(135deg, #E8722A 0%, #F5A623 100%);
    --zh-gradient-dark: linear-gradient(180deg, #0F2340 0%, #1A3F6F 100%);
    --zh-gradient-light: linear-gradient(180deg, #F7FBFF 0%, #FFFFFF 100%);
    --zh-gradient-hero: linear-gradient(135deg, #1A3F6F 0%, #2B7BC8 100%);
    --zh-gradient-card: linear-gradient(180deg, #F7FBFF 0%, #FFFFFF 100%);
    --zh-gradient-footer: linear-gradient(180deg, #0F2340 0%, #1A3F6F 100%);

    /* 中性色 */
    --zh-text: #2D3748;
    --zh-text-secondary: #8896A7;
    --zh-text-muted: #A0AEC0;
    --zh-border: #E2E8F0;
    --zh-bg-light: #EDF3FA;
    --zh-bg-ice: #F7FBFF;
    --zh-white: #FFFFFF;
    --zh-bg-dark: #0F2340;

    /* 功能色 */
    --zh-success: #5EC26A;
    --zh-warning: #F5A623;
    --zh-danger: #E53E3E;
    --zh-info: #4A9FE5;

    /* 兼容别名 */
    --zh-primary: #1A3F6F;
    --zh-primary-light: #4A9FE5;
    --zh-primary-bg: #EDF3FA;
    --zh-primary-hover: #143258;
    --zh-accent: #E8722A;
    --zh-gradient-accent: linear-gradient(135deg, #E8722A, #F5A623);
    --zh-gradient-primary: linear-gradient(135deg, #1A3F6F, #2B7BC8);
    --zh-text-primary: #2D3748;
    --zh-cyan: #4A9FE5;
    --zh-purple: #E8722A;

    /* 字体 */
    --zh-font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

    /* 圆角 */
    --zh-radius: 12px;
    --zh-radius-sm: 8px;
    --zh-radius-md: 12px;
    --zh-radius-lg: 16px;
    --zh-radius-xl: 24px;

    /* 阴影（2.5D浮岛感） */
    --zh-shadow: 0 4px 16px rgba(26,63,111,0.06);
    --zh-shadow-sm: 0 2px 8px rgba(26,63,111,0.05);
    --zh-shadow-md: 0 8px 32px rgba(26,63,111,0.08);
    --zh-shadow-lg: 0 12px 40px rgba(26,63,111,0.12);
    --zh-shadow-hover: 0 12px 36px rgba(26,63,111,0.14);
    --zh-shadow-nav: 0 2px 20px rgba(26,63,111,0.06);
    --zh-shadow-orange: 0 6px 20px rgba(232,114,42,0.3);
}

/* --- 全局基础 --- */
* { box-sizing: border-box; }

body {
    font-family: var(--zh-font);
    font-size: 15px;
    line-height: 1.7;
    color: var(--zh-text);
    background: var(--zh-white);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--zh-sky);
    text-decoration: none;
    transition: color 0.3s;
}
a:hover {
    color: var(--zh-orange);
    text-decoration: none;
}

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

.zh_container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   主导航栏 — 单层通栏，透明→吸顶
   ============================================ */
.zh_navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
    background: transparent;
}

/* 非首页默认白底 */
.zh_navbar.zh_navbar_solid {
    background: var(--zh-white);
    box-shadow: var(--zh-shadow-nav);
}
.zh_navbar.zh_navbar_solid .zh_nav_link {
    color: var(--zh-text);
}
.zh_navbar.zh_navbar_solid .zh_nav_link:hover,
.zh_navbar.zh_navbar_solid .zh_nav_link.active {
    color: var(--zh-blue);
}
.zh_navbar.zh_navbar_solid .zh_logo_light { display: none; }
.zh_navbar.zh_navbar_solid .zh_logo_dark { display: block; }
.zh_navbar.zh_navbar_solid .zh_nav_phone { color: var(--zh-text-secondary); }
.zh_navbar.zh_navbar_solid .zh_nav_phone i { color: var(--zh-sky); }
.zh_navbar.zh_navbar_solid .zh_hamburger { color: var(--zh-text); }
.zh_navbar.zh_navbar_solid .zh_nav_search_btn { color: var(--zh-text-secondary); }

/* 滚动后吸顶 */
.zh_navbar.zh_scrolled {
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(26,63,111,0.1);
    height: 64px;
}
.zh_navbar.zh_scrolled .zh_navbar_inner { height: 64px; }
.zh_navbar.zh_scrolled .zh_logo img { height: 34px; }
.zh_navbar.zh_scrolled .zh_nav_link { color: var(--zh-text); }
.zh_navbar.zh_scrolled .zh_nav_link:hover,
.zh_navbar.zh_scrolled .zh_nav_link.active { color: var(--zh-blue); }
.zh_navbar.zh_scrolled .zh_logo_light { display: none; }
.zh_navbar.zh_scrolled .zh_logo_dark { display: block; }
.zh_navbar.zh_scrolled .zh_nav_phone { color: var(--zh-text-secondary); }
.zh_navbar.zh_scrolled .zh_nav_phone i { color: var(--zh-sky); }
.zh_navbar.zh_scrolled .zh_hamburger { color: var(--zh-text); }
.zh_navbar.zh_scrolled .zh_nav_search_btn { color: var(--zh-text-secondary); }

.zh_navbar_inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    transition: height 0.4s;
}

/* Logo双版本 */
.zh_logo { display: flex; align-items: center; flex-shrink: 0; }
.zh_logo img { height: 40px; object-fit: contain; transition: height 0.3s; }
.zh_logo_dark { display: none; }
.zh_logo_light { display: block; }

/* 导航菜单居中 */
.zh_nav_menu {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 4px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}
.zh_nav_link {
    display: inline-block;
    padding: 8px 18px;
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    transition: all 0.3s;
    border-radius: var(--zh-radius-sm);
    white-space: nowrap;
}
.zh_nav_link:hover {
    color: #fff;
    background: rgba(255,255,255,0.12);
}
.zh_nav_link.active {
    color: #fff;
}
.zh_nav_link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--zh-orange);
    border-radius: 2px;
}

/* 右侧操作区 */
.zh_nav_right {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.zh_nav_phone {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}
.zh_nav_phone i { color: var(--zh-orange-light); font-size: 14px; }
.zh_nav_search_btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 17px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}
.zh_nav_search_btn:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
}
.zh_nav_auth {
    display: flex;
    align-items: center;
    gap: 8px;
}
.zh_nav_auth_link {
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.3s;
}
.zh_nav_auth_link:hover { color: #fff; background: rgba(255,255,255,0.1); }
.zh_nav_auth_divider { color: rgba(255,255,255,0.3); font-size: 13px; }

/* 橙色 CTA 按钮 */
.zh_nav_cta {
    background: var(--zh-gradient-orange);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: var(--zh-radius-xl);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(232,114,42,0.3);
    white-space: nowrap;
}
.zh_nav_cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--zh-shadow-orange);
    color: #fff !important;
}

/* solid模式下的auth */
.zh_navbar.zh_navbar_solid .zh_nav_auth_link,
.zh_navbar.zh_scrolled .zh_nav_auth_link {
    color: var(--zh-text);
}
.zh_navbar.zh_navbar_solid .zh_nav_auth_link:hover,
.zh_navbar.zh_scrolled .zh_nav_auth_link:hover {
    color: var(--zh-blue);
    background: var(--zh-bg-light);
}
.zh_navbar.zh_navbar_solid .zh_nav_auth_divider,
.zh_navbar.zh_scrolled .zh_nav_auth_divider { color: var(--zh-border); }

/* 搜索框展开 */
.zh_search_overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15,35,64,0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    align-items: flex-start;
    justify-content: center;
    padding-top: 140px;
}
.zh_search_overlay.zh_show { display: flex; }
.zh_search_box {
    background: var(--zh-white);
    border-radius: var(--zh-radius-lg);
    padding: 8px;
    display: flex;
    width: 640px;
    max-width: 92vw;
    box-shadow: 0 24px 80px rgba(0,0,0,0.25);
}
.zh_search_box input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 22px;
    font-size: 16px;
    border-radius: var(--zh-radius);
    background: transparent;
}
.zh_search_box button {
    background: var(--zh-gradient-orange);
    color: var(--zh-white);
    border: none;
    padding: 14px 32px;
    border-radius: var(--zh-radius);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}
.zh_search_box button:hover {
    box-shadow: var(--zh-shadow-orange);
    transform: translateY(-1px);
}

/* 移动端汉堡菜单 */
.zh_hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: rgba(255,255,255,0.9);
    cursor: pointer;
    padding: 8px;
}

/* 移动端菜单 */
.zh_mobile_menu {
    display: none;
    position: fixed;
    top: 0; right: -300px;
    width: 300px;
    height: 100vh;
    background: var(--zh-white);
    box-shadow: -8px 0 40px rgba(0,0,0,0.15);
    z-index: 3000;
    transition: right 0.35s cubic-bezier(0.4,0,0.2,1);
    overflow-y: auto;
    padding: 0;
}
.zh_mobile_menu.zh_show { right: 0; }
.zh_mobile_menu_header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--zh-border);
}
.zh_mobile_menu_close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--zh-text-secondary);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s;
}
.zh_mobile_menu_close:hover { background: var(--zh-bg-light); }
.zh_mobile_nav_link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    color: var(--zh-text);
    font-size: 15px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}
.zh_mobile_nav_link:hover,
.zh_mobile_nav_link.active {
    color: var(--zh-blue);
    background: var(--zh-bg-light);
    border-left-color: var(--zh-orange);
}
.zh_mobile_nav_link i { width: 20px; text-align: center; font-size: 15px; color: var(--zh-text-secondary); }
.zh_mobile_nav_link.active i,
.zh_mobile_nav_link:hover i { color: var(--zh-blue); }
.zh_mobile_menu_divider {
    height: 1px;
    background: var(--zh-border);
    margin: 8px 20px;
}
.zh_mobile_overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(15,35,64,0.5);
    z-index: 2500;
}
.zh_mobile_overlay.zh_show { display: block; }

/* ============================================
   导航栏占位（防止fixed导航遮挡内容）
   ============================================ */
.zh_nav_spacer {
    height: 72px;
}

/* ============================================
   提示消息
   ============================================ */
/* 全局浮层提示 */
.zh_alert_wrap {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    min-width: 320px;
    max-width: 520px;
    animation: zhAlertIn 0.4s ease;
}
.zh_alert_wrap.zh_alert_hide {
    animation: zhAlertOut 0.35s ease forwards;
}
@keyframes zhAlertIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-20px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes zhAlertOut {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to   { opacity: 0; transform: translateX(-50%) translateY(-20px); }
}
.zh_alert {
    padding: 14px 22px;
    border-radius: var(--zh-radius);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    cursor: pointer;
}
.zh_alert_success {
    background: #F0FFF4;
    color: #276749;
    border: 1px solid #C6F6D5;
}
.zh_alert_error {
    background: #FFF5F5;
    color: #9B2C2C;
    border: 1px solid #FED7D7;
}

/* ============================================
   公共底部 Footer — 深蓝渐变三段式
   ============================================ */
.zh_footer {
    background: var(--zh-gradient-footer);
    padding: 70px 0 0;
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    position: relative;
    overflow: hidden;
}
/* 底部装饰圆 */
.zh_footer::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: rgba(74,159,229,0.06);
    border-radius: 50%;
}
.zh_footer::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 200px;
    height: 200px;
    background: rgba(232,114,42,0.05);
    border-radius: 50%;
}
.zh_footer_inner {
    position: relative;
    z-index: 1;
}
.zh_footer_grid {
    display: grid;
    grid-template-columns: 2.5fr 1.5fr 1.5fr 2fr;
    gap: 50px;
}
.zh_footer_brand img {
    height: 38px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}
.zh_footer_slogan {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 24px;
    color: rgba(255,255,255,0.5);
}
.zh_footer_social {
    display: flex;
    gap: 12px;
}
.zh_footer_social_item {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    font-size: 16px;
    transition: all 0.3s;
}
.zh_footer_social_item:hover {
    background: var(--zh-orange);
    color: #fff;
    transform: translateY(-2px);
}
.zh_footer_title {
    color: var(--zh-white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}
.zh_footer_title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 3px;
    background: var(--zh-gradient-orange);
    border-radius: 2px;
}
.zh_footer_links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.zh_footer_links li {
    margin-bottom: 12px;
}
.zh_footer_links a {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.zh_footer_links a::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    transition: background 0.3s;
    flex-shrink: 0;
}
.zh_footer_links a:hover {
    color: var(--zh-orange-light);
    padding-left: 4px;
}
.zh_footer_links a:hover::before {
    background: var(--zh-orange);
}
.zh_footer_contact_item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    gap: 12px;
}
.zh_footer_contact_item i {
    color: var(--zh-orange-light);
    font-size: 16px;
    margin-top: 3px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}
/* 版权栏 */
.zh_copyright {
    background: rgba(0,0,0,0.2);
    text-align: center;
    padding: 18px 0;
    margin-top: 50px;
    color: rgba(255,255,255,0.35);
    font-size: 13px;
    position: relative;
    z-index: 1;
}
.zh_copyright a {
    color: rgba(255,255,255,0.45);
    transition: color 0.3s;
}
.zh_copyright a:hover {
    color: var(--zh-orange-light);
}

/* ============================================
   回到顶部
   ============================================ */
.zh_back_top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 46px;
    height: 46px;
    background: var(--zh-gradient-orange);
    color: var(--zh-white);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 900;
    box-shadow: var(--zh-shadow-orange);
}
.zh_back_top.zh_show {
    opacity: 1;
    visibility: visible;
}
.zh_back_top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(232,114,42,0.4);
}

/* ============================================
   板块标题组件
   ============================================ */
.zh_section_header {
    text-align: center;
    margin-bottom: 50px;
}
.zh_section_title {
    font-size: 30px;
    font-weight: 700;
    color: var(--zh-blue);
    margin-bottom: 0;
    letter-spacing: -0.5px;
}
.zh_section_line {
    width: 50px;
    height: 4px;
    background: var(--zh-gradient-orange);
    margin: 14px auto;
    border-radius: 2px;
}
.zh_section_subtitle {
    font-size: 15px;
    color: var(--zh-text-secondary);
    margin: 0;
}

/* ============================================
   通用信息卡片
   ============================================ */
.zh_info_card {
    background: var(--zh-white);
    border-radius: var(--zh-radius);
    border: 1px solid rgba(226,232,240,0.6);
    box-shadow: var(--zh-shadow);
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}
.zh_info_card:hover {
    transform: translateY(-6px);
    box-shadow: var(--zh-shadow-hover);
    border-color: transparent;
}
.zh_info_thumb {
    width: 100%;
    height: 180px;
    background: var(--zh-bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.zh_info_thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.zh_info_card:hover .zh_info_thumb img {
    transform: scale(1.06);
}
.zh_info_thumb_placeholder {
    font-size: 42px;
    color: #CBD5E0;
}
.zh_info_body {
    padding: 18px;
}
.zh_info_tag {
    display: inline-block;
    padding: 3px 12px;
    background: var(--zh-bg-light);
    color: var(--zh-blue);
    font-size: 12px;
    border-radius: 20px;
    margin-bottom: 10px;
    font-weight: 500;
}
.zh_info_title {
    font-size: 16px;
    font-weight: 600;
    color: var(--zh-text);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}
.zh_info_title a { color: inherit; }
.zh_info_title a:hover { color: var(--zh-blue); }
.zh_info_desc {
    font-size: 14px;
    color: var(--zh-text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    margin-bottom: 12px;
}
.zh_info_meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--zh-text-muted);
    padding-top: 12px;
    border-top: 1px solid var(--zh-border);
}
.zh_info_meta i { margin-right: 4px; }

/* ============================================
   面包屑
   ============================================ */
.zh_breadcrumb {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 14px;
    flex-wrap: wrap;
}
.zh_breadcrumb a { color: rgba(255,255,255,0.7); transition: color 0.3s; }
.zh_breadcrumb a:hover { color: #fff; }
.zh_breadcrumb span { color: rgba(255,255,255,0.5); }
.zh_breadcrumb_divider { margin: 0 8px; color: rgba(255,255,255,0.3); font-size: 12px; }
.zh_breadcrumb_dark a { color: var(--zh-text-secondary); }
.zh_breadcrumb_dark a:hover { color: var(--zh-blue); }
.zh_breadcrumb_dark span { color: var(--zh-text); }
.zh_breadcrumb_dark .zh_breadcrumb_divider { color: var(--zh-border); }

/* ============================================
   按钮
   ============================================ */
.zh_btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--zh-radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    line-height: 1.4;
}
.zh_btn_sm { padding: 8px 20px; font-size: 14px; }
.zh_btn_primary {
    background: var(--zh-gradient);
    color: var(--zh-white);
}
.zh_btn_primary:hover {
    color: var(--zh-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26,63,111,0.35);
}
.zh_btn_orange {
    background: var(--zh-gradient-orange);
    color: var(--zh-white);
}
.zh_btn_orange:hover {
    color: var(--zh-white);
    transform: translateY(-2px);
    box-shadow: var(--zh-shadow-orange);
}
.zh_btn_outline {
    background: transparent;
    color: var(--zh-blue);
    border: 2px solid var(--zh-blue);
}
.zh_btn_outline:hover {
    background: var(--zh-blue);
    color: var(--zh-white);
}
.zh_btn_ghost {
    background: transparent;
    color: var(--zh-white);
    border: 2px solid rgba(255,255,255,0.5);
}
.zh_btn_ghost:hover {
    background: rgba(255,255,255,0.15);
    color: var(--zh-white);
    border-color: #fff;
}
.zh_btn_text {
    background: none;
    border: none;
    color: var(--zh-sky);
    padding: 0;
    font-weight: 500;
}
.zh_btn_text:hover { color: var(--zh-orange); }
.zh_btn_text i { transition: transform 0.3s; }
.zh_btn_text:hover i { transform: translateX(4px); }

/* ============================================
   通用「查看全部」
   ============================================ */
.zh_view_all {
    text-align: center;
    margin-top: 36px;
}
.zh_view_all a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--zh-sky);
    font-weight: 500;
    font-size: 15px;
    padding: 10px 28px;
    border: 2px solid var(--zh-sky);
    border-radius: var(--zh-radius-xl);
    transition: all 0.3s;
}
.zh_view_all a:hover {
    background: var(--zh-sky);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74,159,229,0.3);
}
.zh_view_all a i { transition: transform 0.3s; }
.zh_view_all a:hover i { transform: translateX(4px); }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1100px) {
    .zh_nav_menu { gap: 0; }
    .zh_nav_link { padding: 8px 12px; font-size: 14px; }
    .zh_nav_phone { display: none; }
}

@media (max-width: 991px) {
    .zh_nav_menu { display: none; }
    .zh_nav_search_btn { display: none; }
    .zh_nav_phone { display: none; }
    .zh_nav_auth { display: none; }
    .zh_hamburger { display: block; }
    .zh_mobile_menu { display: block; }
    .zh_footer_grid {
        grid-template-columns: 1fr 1fr;
        gap: 35px;
    }
    .zh_section_title { font-size: 26px; }
    .zh_section_header { margin-bottom: 35px; }
}

@media (max-width: 767px) {
    .zh_navbar { height: 60px; }
    .zh_navbar_inner { height: 60px; }
    .zh_navbar.zh_scrolled { height: 56px; }
    .zh_navbar.zh_scrolled .zh_navbar_inner { height: 56px; }
    .zh_nav_spacer { height: 60px; }
    .zh_logo img { height: 32px; }
    .zh_footer { padding: 50px 0 0; }
    .zh_footer_grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .zh_section_title { font-size: 22px; }
    .zh_section_header { margin-bottom: 30px; }
    .zh_back_top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 16px;
    }
    .zh_container { padding: 0 16px; }
}