/* ============================================================
   安阳天翔城市配送有限公司 - 官网样式表
   现代专业、科技感、稳重可靠的设计风格
   ============================================================ */

/* --- CSS 变量系统 --- */
:root {
    /* 颜色变量 */
    --color-primary: #2E3A3F;       /* 主色：工业深灰 */
    --color-secondary: #4ECDC4;     /* 辅色：科技蓝绿 */
    --color-accent: #FF6B35;        /* 强调色：活力橙 */
    --color-background: #F9FAFB;    /* 背景色：浅灰蓝 */
    --color-light-bg: #F1F4F6;      /* 浅色背景 */
    --color-text: #1F2933;          /* 正文颜色：冷灰黑 */
    --color-sub-text: #5D6B7A;      /* 次要文本：石板灰 */
    --color-border: #D3D9E0;        /* 边框颜色 */
    --color-hover: #FF8B60;         /* 悬停色：强调色提亮 */

    /* 字体变量 */
    --font-family-primary: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", sans-serif;
    --font-family-code: "Courier New", monospace;
    --font-size-base: 16px;
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.25rem;
    --font-size-h5: 1.1rem;
    --font-size-h6: 1rem;
    --line-height-base: 1.6;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* 间距变量 */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px */
    --spacing-lg: 2rem;     /* 32px */
    --spacing-xl: 4rem;     /* 64px */
    --spacing-xxl: 6rem;    /* 96px */

    /* 圆角变量 */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;

    /* 阴影变量 */
    --box-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --box-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --box-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* 布局变量 */
    --container-width: 1200px;
    --container-padding: 2rem;
    --grid-columns: 12;
    --grid-gap: 1.5rem;
    --header-height: 80px;
    --footer-height: auto;

    /* 过渡和动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* --- 全局重置和基础样式 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(78, 205, 196, 0.18), transparent 45%),
        radial-gradient(circle at 85% 15%, rgba(255, 107, 53, 0.12), transparent 50%);
    min-height: 100vh;
}

/* --- 排版样式 --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }
h5 { font-size: var(--font-size-h5); }
h6 { font-size: var(--font-size-h6); }

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--color-hover);
    text-decoration: underline;
}

ul, ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

li {
    margin-bottom: var(--spacing-sm);
}

/* --- 容器和布局 --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* --- Grid 布局系统 --- */
.grid {
    display: grid;
    grid-template-columns: repeat(var(--grid-columns), 1fr);
    gap: var(--grid-gap);
}

.grid-col-1 { grid-column: span 1; }
.grid-col-2 { grid-column: span 2; }
.grid-col-3 { grid-column: span 3; }
.grid-col-4 { grid-column: span 4; }
.grid-col-5 { grid-column: span 5; }
.grid-col-6 { grid-column: span 6; }
.grid-col-7 { grid-column: span 7; }
.grid-col-8 { grid-column: span 8; }
.grid-col-9 { grid-column: span 9; }
.grid-col-10 { grid-column: span 10; }
.grid-col-11 { grid-column: span 11; }
.grid-col-12 { grid-column: span 12; }

/* --- Flexbox 工具类 --- */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

/* --- 按钮样式 --- */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-align: center;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: #3a494f;
    box-shadow: var(--box-shadow-md);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.btn-secondary:hover {
    background-color: #35b8ae;
    box-shadow: var(--box-shadow-md);
}

.btn-accent {
    background-color: var(--color-accent);
    color: white;
}

.btn-accent:hover {
    background-color: #ff8b60;
    box-shadow: var(--box-shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--color-accent);
    color: white;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* --- 卡片组件 --- */
.card {
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    min-height: 320px;
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-body {
    padding: 0;
}

.card-footer {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* --- 部分组件 --- */
.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.section-title p {
    color: var(--color-sub-text);
    font-size: 1.1rem;
}

/* --- 背景色 --- */
.bg-primary {
    background-color: var(--color-primary);
    color: white;
}

.bg-secondary {
    background-color: var(--color-secondary);
    color: white;
}

.bg-light {
    background-color: var(--color-light-bg);
}

/* --- 文本对齐 --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* --- 文本颜色 --- */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-sub-text); }

/* --- 间距工具类 --- */
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* --- 首页定制样式 --- */
.hero-logistics {
    position: relative;
    padding: calc(var(--spacing-xxl) + var(--header-height)) 0 var(--spacing-xl);
    background: linear-gradient(135deg, rgba(18, 25, 29, 0.96) 0%, rgba(32, 43, 48, 0.94) 45%, rgba(255, 107, 53, 0.55) 100%);
    color: #ffffff;
    overflow: hidden;
}

.hero-logistics::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 20% 20%, rgba(78, 205, 196, 0.22), transparent 55%),
        radial-gradient(circle at 85% 10%, rgba(255, 107, 53, 0.25), transparent 60%);
    opacity: 0.9;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-info {
    grid-column: span 5;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-eyebrow {
    font-size: 0.9rem;
    letter-spacing: 0.3rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.7);
}

.hero-info h1 {
    color: #ffffff;
    margin-bottom: 0;
}

.hero-info p {
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 0;
    font-size: 1.05rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    position: relative;
    background: rgba(17, 24, 28, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-lg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(12px);
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(255, 107, 53, 0.25), transparent 60%);
    z-index: -1;
}

.stat-label {
    font-size: 0.85rem;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    margin: var(--spacing-sm) 0;
}

.stat-trend {
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-secondary);
}

.trend-up {
    color: var(--color-secondary);
}

.trend-stable {
    color: rgba(255, 255, 255, 0.65);
}

.stat-detail {
    display: block;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.hero-visual {
    grid-column: span 7;
    position: relative;
    min-height: 420px;
}

#networkCanvas {
    position: absolute;
    inset: -10%;
    width: 120%;
    height: 120%;
    pointer-events: none;
    opacity: 0.65;
}

.map-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(15, 20, 24, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.35);
}

.hero-map {
    width: 100%;
    height: 420px;
}

.map-status {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(180deg, rgba(10, 15, 18, 0) 0%, rgba(10, 15, 18, 0.85) 100%);
}

.status-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.status-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12rem;
    color: rgba(255, 255, 255, 0.6);
}

.status-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
}

.realtime {
    position: relative;
}

.realtime::after {
    content: '';
    position: absolute;
    top: -4px;
    right: -12px;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 1.8s ease-in-out infinite;
    box-shadow: 0 0 0 6px rgba(255, 107, 53, 0.25);
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.5);
        opacity: 0.25;
    }
    100% {
        transform: scale(0.8);
        opacity: 0.9;
    }
}

.hero-map.leaflet-container {
    background: transparent;
    font-family: var(--font-family-primary);
}

.hero-map.leaflet-container .leaflet-control {
    background: rgba(15, 20, 24, 0.85);
    color: #ffffff;
    border: none;
    border-radius: var(--border-radius-md);
}

.hero-map.leaflet-container .leaflet-bar a {
    background: transparent;
    color: #ffffff;
    border: none;
}

.hero-map.leaflet-container .leaflet-bar a:hover {
    background: rgba(255, 255, 255, 0.15);
}

.section-dashboard .section-title p {
    max-width: 720px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
}

.dashboard-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: #ffffff;
    padding: var(--spacing-xl);
    border-radius: 18px;
    border: 1px solid rgba(46, 58, 63, 0.08);
    box-shadow: 0 20px 40px rgba(12, 19, 24, 0.08);
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(78, 205, 196, 0.1), transparent 65%);
    pointer-events: none;
}

.dashboard-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.badge {
    font-size: 0.75rem;
    letter-spacing: 0.16rem;
    text-transform: uppercase;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    border: 1px solid rgba(46, 58, 63, 0.2);
    font-weight: var(--font-weight-medium);
}

.badge.accent {
    background: rgba(255, 107, 53, 0.12);
    border-color: rgba(255, 107, 53, 0.35);
    color: var(--color-accent);
}

.badge.sky {
    background: rgba(78, 205, 196, 0.12);
    border-color: rgba(78, 205, 196, 0.35);
    color: var(--color-secondary);
}

.badge.hollow {
    background: rgba(46, 58, 63, 0.06);
    border-color: rgba(46, 58, 63, 0.2);
    color: var(--color-primary);
}

.route-visual {
    position: relative;
    margin-top: var(--spacing-md);
}

.route-path {
    stroke-dasharray: 14 18;
    animation: routeFlow 5s linear infinite;
}

.route-node {
    animation: nodePulse 3.5s ease-in-out infinite;
}

.route-pulse {
    animation: pulseFade 3.2s ease-out infinite;
}

@keyframes routeFlow {
    to {
        stroke-dashoffset: -260;
    }
}

@keyframes nodePulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

@keyframes pulseFade {
    0% {
        opacity: 0.6;
        transform: scale(0.6);
    }
    100% {
        opacity: 0;
        transform: scale(1.4);
    }
}

.dashboard-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dashboard-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
    color: var(--color-sub-text);
}

.list-metric {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.sensor-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.sensor-item {
    background: var(--color-light-bg);
    border: 1px solid rgba(46, 58, 63, 0.08);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sensor-label {
    font-size: 0.85rem;
    color: var(--color-sub-text);
    letter-spacing: 0.04rem;
}

.sensor-value {
    font-size: 1.6rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.sensor-trend {
    font-size: 0.85rem;
    color: var(--color-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08rem;
}

.api-pills {
    margin-top: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.pill {
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
    background: rgba(46, 58, 63, 0.08);
    color: var(--color-primary);
    font-size: 0.9rem;
    border: 1px solid rgba(46, 58, 63, 0.15);
}

.pill:nth-child(odd) {
    background: rgba(78, 205, 196, 0.12);
    border-color: rgba(78, 205, 196, 0.3);
}

.services-grid {
    align-items: stretch;
}

.service-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: left;
    height: 100%;
    min-height: 320px;
}

.service-card p {
    color: var(--color-sub-text);
    flex: 1;
}

.service-card a {
    align-self: flex-start;
    margin-top: auto;
}

.service-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

.service-icon-orange {
    background: rgba(255, 107, 53, 0.15);
    color: var(--color-accent);
}

.service-icon-sky {
    background: rgba(78, 205, 196, 0.18);
    color: var(--color-secondary);
}

.service-icon-blue {
    background: rgba(79, 169, 255, 0.15);
    color: #2b7de8;
}

.service-icon-dark {
    background: rgba(46, 58, 63, 0.12);
    color: var(--color-primary);
}

.section-platform-highlight {
    background: linear-gradient(135deg, rgba(249, 250, 251, 1) 0%, rgba(233, 238, 241, 1) 100%);
}

.platform-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-xl);
    align-items: center;
}

.platform-content {
    grid-column: span 6;
}

.section-title-left {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.section-title-left h2,
.section-title-left p {
    text-align: left;
}

.feature-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    color: var(--color-text);
}

.feature-list .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 12px rgba(255, 107, 53, 0.4);
}

.platform-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.platform-visual {
    grid-column: span 6;
    position: relative;
}

.flow-svg {
    width: 100%;
    height: auto;
}

.flow-path {
    stroke-dasharray: 12 18;
    stroke-linecap: round;
    animation: flowDash 6s linear infinite;
}

.flow-node text {
    font-size: 0.85rem;
    fill: var(--color-primary);
    text-anchor: middle;
    letter-spacing: 0.05rem;
}

.node-circle {
    fill: rgba(255, 255, 255, 0.9);
    stroke: rgba(46, 58, 63, 0.25);
    stroke-width: 1.5;
}

.flow-indicator {
    fill: var(--color-accent);
}

@keyframes flowDash {
    to {
        stroke-dashoffset: -260;
    }
}

.section-muted {
    background-color: var(--color-light-bg);
}

.advantages-grid {
    align-items: stretch;
    gap: var(--spacing-lg);
}

.advantage-card {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(46, 58, 63, 0.08);
    box-shadow: var(--box-shadow-sm);
    min-height: 180px;
}

.advantage-card h3 {
    color: var(--color-primary);
}

.advantage-card p {
    margin-bottom: 0;
    color: var(--color-sub-text);
}

.adv-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: rgba(46, 58, 63, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.9rem;
    color: var(--color-primary);
}

.section-muted .advantage-card {
    background: rgba(255, 255, 255, 0.9);
}

.section-cta {
    background: linear-gradient(135deg, rgba(20, 29, 33, 0.95) 0%, rgba(255, 107, 53, 0.88) 100%);
    color: #ffffff;
    text-align: center;
    border-radius: var(--border-radius-xl);
    margin: 0 var(--container-padding);
    box-shadow: 0 30px 60px rgba(12, 19, 24, 0.25);
}

.section-cta h2,
.section-cta p {
    color: #ffffff;
}

.section-cta p {
    font-size: 1.1rem;
    opacity: 0.82;
    margin-bottom: var(--spacing-lg);
}

.site-main {
    margin-top: var(--header-height);
}

.news-image {
    margin-bottom: var(--spacing-md);
}

.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.partner-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    background: #ffffff;
    box-shadow: var(--box-shadow-sm);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-muted .partner-card {
    background: rgba(255, 255, 255, 0.92);
}

.partner-card p {
    color: var(--color-sub-text);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.05rem;
    margin: 0;
}

.metric-updated {
    animation: metricFlash 1s ease;
}

@keyframes metricFlash {
    0% {
        color: var(--color-accent);
    }
    100% {
        color: inherit;
    }
}

.map-legend {
    background: rgba(15, 20, 24, 0.92);
    color: #ffffff;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35);
    min-width: 180px;
    font-size: 0.85rem;
}

.map-legend h4 {
    margin: 0 0 var(--spacing-sm);
    font-size: 0.9rem;
    letter-spacing: 0.1rem;
    text-transform: uppercase;
}

.map-legend ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.4rem;
}

.map-legend li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.85);
}

.map-legend .swatch {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    display: inline-block;
}

.map-legend .swatch-live {
    background: #FF6B35;
}

.map-legend .swatch-cold {
    background: #4ECDC4;
}

.map-legend .swatch-hub {
    background: #2E3A3F;
}

.hero-map .leaflet-popup-content-wrapper {
    background: rgba(15, 20, 24, 0.92);
    color: #ffffff;
    border-radius: var(--border-radius-md);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-map .leaflet-popup-tip {
    background: rgba(15, 20, 24, 0.92);
}

/* --- 响应式设计 --- */
@media (max-width: 1199px) {
    :root {
        --container-width: 960px;
    }
    
    .grid-col-6 { grid-column: span 12; }
    .grid-col-7 { grid-column: span 12; }
    .grid-col-8 { grid-column: span 12; }

    .hero-info {
        grid-column: span 12;
    }

    .hero-visual {
        grid-column: span 12;
        margin-top: var(--spacing-lg);
    }

    .hero-map {
        height: 360px;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .platform-content,
    .platform-visual {
        grid-column: span 12;
    }
}

@media (max-width: 991px) {
    .hero-logistics {
        padding: calc(var(--spacing-xl) + var(--header-height)) 0 var(--spacing-lg);
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .map-status {
        flex-direction: column;
        align-items: flex-start;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .sensor-grid {
        grid-template-columns: 1fr;
    }

    .platform-container {
        gap: var(--spacing-lg);
    }

    .section-cta {
        margin: 0 var(--spacing-md);
    }
}

@media (max-width: 767px) {
    :root {
        --container-width: 100%;
        --container-padding: 1rem;
        --grid-gap: 1rem;
        --header-height: 60px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .grid-col-3 { grid-column: span 6; }
    .grid-col-4 { grid-column: span 12; }
    .grid-col-6 { grid-column: span 12; }
    
    .section {
        padding: var(--spacing-lg) 0;
    }

    .hero-logistics {
        padding: calc(var(--spacing-lg) + var(--header-height)) 0 var(--spacing-lg);
    }

    .hero-info {
        gap: var(--spacing-md);
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-map {
        height: 300px;
    }

    .map-status {
        gap: var(--spacing-sm);
    }

    .services-grid .grid-col-3 {
        grid-column: span 12;
    }

    .dashboard-card {
        padding: var(--spacing-lg);
    }

    .section-cta {
        margin: 0;
        border-radius: var(--border-radius-lg);
    }
}

/* --- 图片样式 --- */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-responsive {
    width: 100%;
    height: auto;
}

.img-rounded {
    border-radius: var(--border-radius-lg);
}

.img-shadow {
    box-shadow: var(--box-shadow-md);
}

/* --- 表格样式 --- */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    background-color: var(--color-light-bg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

tr:hover {
    background-color: var(--color-light-bg);
}

/* --- 表单样式 --- */
input, textarea, select {
    width: 100%;
    padding: var(--spacing-sm);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 74, 173, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

/* --- 页脚样式 --- */
footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
}

footer a {
    color: white;
}

footer a:hover {
    text-decoration: underline;
}

/* --- 实用类 --- */
.hidden { display: none; }
.visible { display: block; }
.clearfix::after { content: ""; display: table; clear: both; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }