/* ============================================
   量必达 - 全局样式
   绿色科技商务风 | 纯PC端
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --primary: #0f7b3a;
    --primary-dark: #0a5a2a;
    --primary-light: #2a9d5a;
    --primary-bg: #e8f5ee;
    --primary-gradient: linear-gradient(135deg, #0f7b3a 0%, #1a9d5a 100%);
    --gray-100: #f7f9fa;
    --gray-200: #e9edf0;
    --gray-300: #d0d6dc;
    --gray-400: #9aa4b0;
    --gray-500: #6b7a8a;
    --gray-600: #4a5a6a;
    --gray-700: #2d3a48;
    --gray-800: #1a2632;
    --gray-900: #0d141c;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.25s ease;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    --max-width: 1240px;
}

/* ---------- Reset ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(15, 123, 58, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-ghost {
    background: var(--gray-100);
    color: var(--gray-700);
}
.btn-ghost:hover {
    background: var(--gray-200);
}

.btn-gold {
    background: linear-gradient(135deg, #d4a843 0%, #f5d77b 100%);
    color: #7a5c1a;
}
.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(212, 168, 67, 0.4);
}

.btn-sm {
    padding: 6px 16px;
    font-size: 13px;
}
.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}
.btn-block {
    width: 100%;
    justify-content: center;
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 5px;
    color: var(--gray-700);
}
.form-group .required {
    color: #dc3545;
    margin-left: 2px;
}
.form-control {
    width: 100%;
    padding: 11px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font);
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-800);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15, 123, 58, 0.12);
}
.form-control::placeholder {
    color: var(--gray-400);
}
textarea.form-control {
    resize: vertical;
    min-height: 100px;
}
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7a8a' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

/* ---------- Cards ---------- */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-md);
}

/* ---------- Badge / Tag ---------- */
.tag {
    display: inline-block;
    padding: 2px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-600);
}
.tag-primary {
    background: var(--primary-bg);
    color: var(--primary);
}
.tag-gold {
    background: #fdf6e3;
    color: #b8860b;
}
.tag-diamond {
    background: #e8f0fe;
    color: #1a5bbf;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-500);
    padding: 16px 0;
}
.breadcrumb a {
    color: var(--primary);
}
.breadcrumb a:hover {
    text-decoration: underline;
}
.breadcrumb .separator {
    color: var(--gray-300);
}

/* ---------- Section Header ---------- */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}
.section-header h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--gray-800);
}
.section-header h2 span {
    color: var(--primary);
}
.section-header p {
    color: var(--gray-500);
    font-size: 16px;
    margin-top: 8px;
}

/* ---------- Page Hero ---------- */
.page-hero {
    background: var(--primary-gradient);
    padding: 48px 0 40px;
    color: var(--white);
}
.page-hero h1 {
    font-size: 32px;
    font-weight: 700;
}
.page-hero p {
    font-size: 16px;
    opacity: 0.9;
    margin-top: 6px;
}

/* ---------- Modal / Toast ---------- */
.toast-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.toast-overlay.active {
    opacity: 1;
    visibility: visible;
}
.toast-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 48px 32px;
    max-width: 440px;
    width: 90%;
    text-align: center;
    transform: scale(0.95);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}
.toast-overlay.active .toast-box {
    transform: scale(1);
}
.toast-box .icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 12px;
}
.toast-box h3 {
    font-size: 20px;
    color: var(--gray-800);
    margin-bottom: 8px;
}
.toast-box p {
    color: var(--gray-500);
    font-size: 15px;
    margin-bottom: 20px;
}
.toast-box .btn {
    min-width: 120px;
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--gray-500); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--gray-100);
}
::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ---------- Responsive (PC only, minimal) ---------- */
@media (max-width: 1024px) {
    .container { padding: 0 20px; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .section-header h2 { font-size: 24px; }
    .page-hero h1 { font-size: 26px; }
}

/* ============================================
   量必达 - 头部样式
   ============================================ */

.site-header {
    background: var(--white);
    border-bottom: 2px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 22px;
    color: var(--gray-800);
}
.logo-icon {
    font-size: 28px;
}
.logo-text {
    color: var(--primary);
}
.logo-tag {
    font-size: 12px;
    font-weight: 400;
    color: var(--gray-400);
    background: var(--gray-100);
    padding: 2px 10px;
    border-radius: 12px;
    margin-left: 6px;
}
.nav-menu {
    display: flex;
    gap: 32px;
    font-weight: 500;
    font-size: 15px;
}
.nav-menu a {
    color: var(--gray-600);
    position: relative;
}
.nav-menu a:hover {
    color: var(--primary);
}
.nav-menu a.active {
    color: var(--primary);
}
.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .header-actions .btn-ghost,
    .header-actions .btn-outline {
        display: none;
    }
}

/* ============================================
   量必达 - 底部样式（浅色版）
   ============================================ */

.site-footer {
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 44px 0 20px;
    border-top: 4px solid var(--primary);
}
.site-footer a {
    color: var(--gray-500);
    transition: var(--transition);
}
.site-footer a:hover {
    color: var(--primary);
}

/* 品牌顶部 */
.footer-brand-top {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 28px;
}
.footer-brand-top .footer-logo {
    font-size: 26px;
    font-weight: 700;
    color: var(--gray-800);
}
.footer-brand-top .footer-slogan {
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}
.footer-brand-top .footer-company {
    font-size: 13px;
    color: var(--gray-400);
    margin-top: 2px;
}

/* 四列导航 */
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--gray-200);
}
.footer-col h4 {
    color: var(--gray-800);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 5px;
}
.footer-col a:hover {
    color: var(--primary);
}

/* 联系方式行 */
.footer-contact-row {
    display: flex;
    flex-wrap: wrap;
    gap: 24px 48px;
    padding: 20px 0 18px;
    border-bottom: 1px solid var(--gray-200);
}
.footer-contact-row .contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-600);
}
.footer-contact-row .contact-item i {
    color: var(--primary);
    width: 18px;
    font-size: 15px;
}
.footer-contact-row .contact-item strong {
    color: var(--gray-800);
}

/* 标签 + 友情链接 */
.footer-tags {
    padding: 16px 0 14px;
    border-bottom: 1px solid var(--gray-200);
}
.footer-tags .tags-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    font-size: 13px;
    margin-bottom: 6px;
}
.footer-tags .tags-row:last-child {
    margin-bottom: 0;
}
.footer-tags .tags-row .tag-label {
    color: var(--gray-400);
    font-weight: 500;
}
.footer-tags .tags-row a {
    color: var(--gray-500);
    font-size: 13px;
}
.footer-tags .tags-row a:hover {
    color: var(--primary);
}

/* 底部版权 */
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px 12px;
    padding-top: 16px;
    font-size: 13px;
    color: var(--gray-400);
}
.footer-bottom .sep {
    color: var(--gray-300);
}
.footer-bottom a {
    color: var(--gray-400);
}
.footer-bottom a:hover {
    color: var(--primary);
}
.footer-bottom .disclaimer {
    color: var(--gray-400);
    font-size: 12px;
}

/* 响应式 */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .footer-contact-row {
        flex-direction: column;
        gap: 10px;
    }
    .footer-tags .tags-row {
        gap: 4px 10px;
        font-size: 12px;
    }
    .footer-bottom {
        font-size: 12px;
        flex-direction: column;
        gap: 4px;
    }
}
/* ============================================
   量必达 - 顶部导航（两行设计，视觉厚重）
   ============================================ */

.site-header {
    background: var(--white);
    border-bottom: 2px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

/* 第一行 - 增加高度，让第一行更舒展 */
.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;  /* 原 72px，增加 8px */
    gap: 24px;
}

/* ---- Logo（更大更突出） ---- */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    text-decoration: none;
}
.logo .logo-icon {
    font-size: 34px;
    line-height: 1;
}
.logo .logo-text-group {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}
.logo .logo-text {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.logo .logo-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-400);
    letter-spacing: 1px;
    margin-top: -1px;
}

/* ---- 搜索框（更大更醒目） ---- */
.header-search {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 560px;
    min-width: 200px;
    background: var(--white);
    border-radius: 30px;
    border: 2px solid var(--gray-200);
    transition: var(--transition);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.header-search:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(15, 123, 58, 0.12), 0 4px 16px rgba(0,0,0,0.06);
}
.header-search .search-input {
    flex: 1;
    padding: 12px 22px;
    border: none;
    background: transparent;
    font-size: 15px;
    font-family: var(--font);
    color: var(--gray-800);
    outline: none;
    min-width: 100px;
}
.header-search .search-input::placeholder {
    color: var(--gray-400);
    font-weight: 400;
}
.header-search .search-btn {
    flex-shrink: 0;
    padding: 12px 28px;
    background: var(--primary-gradient);
    border: none;
    color: var(--white);
    font-size: 17px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}
.header-search .search-btn:hover {
    opacity: 0.92;
    box-shadow: inset 0 0 20px rgba(255,255,255,0.15);
}

/* ---- 操作按钮 ---- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.header-actions .btn-sm {
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 24px;
}
.header-actions .btn-ghost {
    background: transparent;
    color: var(--gray-600);
}
.header-actions .btn-ghost:hover {
    background: var(--gray-100);
}
.header-actions .btn-outline {
    border-width: 2px;
}
.header-actions .btn-primary {
    padding: 8px 22px;
}
.header-actions .btn-gold {
    padding: 8px 22px;
}

/* ---- 第二行导航（居中，加宽间距，与内容区分离） ---- */
.header-nav {
    display: flex;
    align-items: center;
    justify-content: center;  /* 强制居中 */
    flex-wrap: wrap;          /* 换行时依然居中 */
    gap: 6px 14px;            /* 纵向6px，横向14px，更舒展 */
    min-height: 54px;
    padding: 10px 24px;       /* 增加内边距，让导航有呼吸空间 */
    margin-bottom: 8px;       /* 与下方内容拉开距离，解决"贴边"问题 */
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-100);
}

/* 导航链接样式保持不变，但微调字号和间距 */
.header-nav a {
    padding: 8px 18px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-600);
    border-radius: 6px;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: 0.3px;
}

/* 分隔符样式 */
.header-nav .nav-divider {
    color: var(--gray-300);
    font-size: 18px;
    font-weight: 300;
    padding: 0 2px;
}

/* 分类导航（比主菜单稍细一点，保留层次感） */
.header-nav .nav-cat {
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-500);
}

eader-nav a {
    padding: 8px 18px;
    font-size: 16px;
    font-weight: 700;
    color: var(--gray-600);
    border-radius: 6px;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: 0.3px;
}
.header-nav a:hover {
    color: var(--primary);
    background: var(--white);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.header-nav a.active {
    color: var(--white);
    background: var(--primary-gradient);
    box-shadow: 0 2px 12px rgba(15, 123, 58, 0.25);
}
.header-nav a.active:hover {
    box-shadow: 0 4px 20px rgba(15, 123, 58, 0.35);
}
.header-nav .nav-divider {
    color: var(--gray-300);
    font-size: 18px;
    font-weight: 300;
    padding: 0 4px;
}
.header-nav .nav-cat {
    font-weight: 600;
    font-size: 15px;
    color: var(--gray-500);
}
.header-nav .nav-cat:hover {
    color: var(--primary);
    background: var(--white);
}
.header-nav .nav-cat.active {
    color: var(--white);
    background: var(--primary-gradient);
}

/* ---- 响应式 ---- */
@media (max-width: 1100px) {
    .header-nav a {
        font-size: 14px;
        padding: 6px 14px;
    }
    .header-nav .nav-cat {
        font-size: 13px;
    }
    .header-search {
        max-width: 400px;
    }
}
@media (max-width: 1024px) {
    .header-top {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
        gap: 12px;
    }
    .header-search {
        order: 3;
        max-width: 100%;
        flex-basis: 100%;
    }
    .header-actions {
        gap: 6px;
    }
    .header-actions .btn-sm {
        padding: 6px 14px;
        font-size: 13px;
    }
    .header-nav {
        height: auto;
        padding: 10px 0 14px;
        gap: 4px;
        flex-wrap: wrap;
        border-top: 1px solid var(--gray-200);
    }
    .header-nav a {
        padding: 6px 12px;
        font-size: 14px;
    }
    .header-nav .nav-divider {
        display: none;
    }
    .header-nav .nav-cat {
        font-size: 13px;
    }
}
@media (max-width: 768px) {
    .logo .logo-sub {
        display: none;
    }
    .logo .logo-text {
        font-size: 22px;
    }
    .header-actions .btn-ghost,
    .header-actions .btn-outline {
        display: none;
    }
    .header-nav a:not(.nav-cat) {
        display: none;
    }
    .header-nav .nav-cat {
        font-size: 13px;
        padding: 4px 10px;
    }
    .header-nav .nav-divider {
        display: none;
    }
}