/*
 * 山西骏晟科技有限公司 - 绿色建筑环保科技主题样式
 * 风格：Green Architecture Eco-Tech（自然绿 + 建筑蓝图 + 节能数据）
 */

:root {
    /* 色彩体系 */
    --color-primary: #2E7D32;       /* 生态绿 */
    --color-secondary: #81C784;     /* 嫩叶绿 */
    --color-accent: #00ACC1;        /* 清新青 */
    --color-earth: #795548;         /* 大地棕 */
    --color-background-light: #E8F5E9; /* 绿白背景 */
    --color-surface: #FFFFFF;
    --color-surface-muted: #F3F7F3;
    --color-text-dark: #1B5E20;
    --color-text-muted: #4B6651;
    --color-border: #C8E6C9;
    --color-divider: #D9E8D9;
    --color-shadow: rgba(46, 125, 50, 0.12);
    --gradient-eco: linear-gradient(135deg, #2E7D32, #00ACC1);
    --gradient-soft: linear-gradient(135deg, #E8F5E9 0%, #FFFFFF 60%, #E3F2ED 100%);

    /* 字体与排版 */
    --font-family-main: "HarmonyOS Sans SC", "Source Han Sans CN", "PingFang SC", "Microsoft YaHei", "Poppins", sans-serif;
    --font-size-base: 16px;
    --font-size-h1: 2.75rem;
    --font-size-h2: 2.1rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.2rem;
    --font-size-small: 0.95rem;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    /* 间距与圆角 */
    --spacing-unit: 8px;
    --spacing-xs: calc(var(--spacing-unit) * 1);
    --spacing-sm: calc(var(--spacing-unit) * 2);
    --spacing-md: calc(var(--spacing-unit) * 3);
    --spacing-lg: calc(var(--spacing-unit) * 5);
    --spacing-xl: calc(var(--spacing-unit) * 10);
    --border-radius-sm: 8px;
    --border-radius: 14px;
    --border-radius-lg: 22px;
    --header-height: 92px;
    --container-max-width: 1220px;
}

/* 基础样式 */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font-family-main);
    font-size: var(--font-size-base);
    line-height: 1.65;
    color: var(--color-text-dark);
    background: radial-gradient(circle at 20% 20%, rgba(0, 172, 193, 0.08), transparent 30%),
                radial-gradient(circle at 80% 10%, rgba(46, 125, 50, 0.08), transparent 32%),
                var(--color-background-light);
    padding-top: var(--header-height);
}

img { max-width: 100%; display: block; border-radius: var(--border-radius-sm); }
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--color-accent); }

ul { padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
li + li { margin-top: var(--spacing-xs); }

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.row {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

@media (max-width: 992px) {
    .row { gap: var(--spacing-sm); }
    .col-md-12 { grid-column: span 12; }
    .col-md-6 { grid-column: span 6; }
    .col-md-4 { grid-column: span 4; }
    .col-md-3 { grid-column: span 3; }
    .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11 { grid-column: span 12; }
}

@media (max-width: 576px) {
    .logo-full { font-size: 1.05rem; }
    .logo-tagline { font-size: 0.75rem; letter-spacing: 0.08em; }
}

@media (max-width: 576px) {
    :root {
        --font-size-base: 14px;
        --spacing-md: calc(var(--spacing-unit) * 2);
    }
    .container { padding: 0 var(--spacing-sm); }
    .col-sm-12 { grid-column: span 12; }
    .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12, .col-md-6, .col-md-4, .col-md-3 { grid-column: span 12; }
}

/* 顶部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(46, 125, 50, 0.12);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    gap: var(--spacing-lg);
}

.nav-content nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    min-width: 0;
}

.logo-block {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    text-decoration: none;
    line-height: 1.2;
    height: var(--header-height);
}

.logo-full {
    font-size: 1.2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 1px;
}

.logo-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 2px;
    letter-spacing: 0.12em;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: nowrap;
    white-space: nowrap;
}
.nav-item { position: relative; }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 var(--spacing-sm);
    height: var(--header-height);
    line-height: 1;
    color: var(--color-text-dark);
    font-weight: var(--font-weight-medium);
    position: relative;
    padding-bottom: 4px;
    white-space: nowrap;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: var(--spacing-sm);
    bottom: 14px;
    width: calc(100% - 2 * var(--spacing-sm));
    height: 3px;
    background: var(--gradient-eco);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
    border-radius: 99px;
}

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

.dropdown-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    min-width: 180px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
    list-style: none;
    padding: var(--spacing-xs) 0;
    z-index: 1001;
}

.nav-item:hover > .dropdown-menu { display: block; }
.dropdown-item a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-dark);
    white-space: nowrap;
}

.dropdown-item a:hover { background: var(--color-surface-muted); color: var(--color-primary); }

.menu-toggle { display: none; font-size: var(--font-size-h2); cursor: pointer; }

@media (max-width: 992px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-surface);
        box-shadow: 0 12px 30px rgba(0,0,0,0.08);
        white-space: normal;
    }
    .nav-menu.active { display: flex; }
    .nav-item { padding: 0; border-bottom: 1px solid var(--color-border); }
    .nav-link {
        height: 48px;
        line-height: 1;
        padding: 0 var(--spacing-md);
        align-items: center;
    }
    .dropdown-menu { position: static; box-shadow: none; border: none; padding-left: var(--spacing-lg); }
    .menu-toggle { display: block; }
    .nav-content { flex-wrap: wrap; align-items: flex-start; }
    .logo-block { width: 100%; }
}

/* 公共组件 */
.section-padding { padding: var(--spacing-xl) 0; }
.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-md);
}
.section-title .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient-eco);
    box-shadow: 0 0 0 6px rgba(0, 172, 193, 0.12);
}

.section-intro {
    color: var(--color-text-muted);
    max-width: 860px;
    margin-bottom: var(--spacing-lg);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(0, 172, 193, 0.12);
    color: var(--color-accent);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-small);
    letter-spacing: 0.5px;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: 0 14px 40px var(--color-shadow);
    padding: var(--spacing-lg);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover { transform: translateY(-4px); box-shadow: 0 18px 50px rgba(0,0,0,0.08); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 12px;
    font-weight: var(--font-weight-bold);
    border: none;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    text-decoration: none;
}

.btn-eco {
    background: var(--gradient-eco);
    color: #fff;
    box-shadow: 0 12px 30px rgba(46, 125, 50, 0.25);
}

.btn-eco:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(0,0,0,0.12); }

.btn-ghost {
    background: rgba(255,255,255,0.7);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover { background: #fff; }

.badge-pill {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    background: rgba(46, 125, 50, 0.12);
    color: var(--color-primary);
    border-radius: 999px;
    font-weight: var(--font-weight-medium);
}

.table, table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

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

th { background: var(--color-surface-muted); font-weight: var(--font-weight-bold); }

/* 首页 - 英雄区 */
.hero-eco-building {
    position: relative;
    padding: var(--spacing-xl) 0;
    background: var(--gradient-soft);
    overflow: hidden;
}

.hero-eco-building::before,
.hero-eco-building::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(0,172,193,0.08) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(0,172,193,0.08) 1px, transparent 1px);
    background-size: 220px 220px;
    opacity: 0.35;
    pointer-events: none;
}

.hero-eco-building::after {
    background-image: radial-gradient(circle at 20% 20%, rgba(46,125,50,0.08), transparent 35%),
                      radial-gradient(circle at 80% 70%, rgba(0,172,193,0.12), transparent 32%);
    opacity: 0.45;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-visual {
    position: relative;
    background: radial-gradient(circle at 30% 30%, rgba(0,172,193,0.2), transparent 50%),
                radial-gradient(circle at 80% 60%, rgba(46,125,50,0.18), transparent 45%),
                rgba(255,255,255,0.82);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    box-shadow: 0 24px 60px rgba(0,0,0,0.08);
}

.hero-visual img { border-radius: var(--border-radius); box-shadow: 0 10px 30px rgba(0,0,0,0.12); }

.hero-content h1 { font-size: var(--font-size-h1); margin: var(--spacing-sm) 0; line-height: 1.2; }
.hero-content .sub { color: var(--color-text-muted); font-size: 1.05rem; }
.hero-content p { color: var(--color-text-muted); margin-top: var(--spacing-sm); }

.hero-badges { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; margin-top: var(--spacing-sm); }

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.stat-card {
    padding: var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-align: left;
    box-shadow: 0 8px 26px rgba(0,0,0,0.06);
}

.stat-card .value { font-size: 1.6rem; font-weight: var(--font-weight-bold); color: var(--color-primary); }
.stat-card .label { color: var(--color-text-muted); font-size: var(--font-size-small); }

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

/* 首页 - 价值主张与数据 */
.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.value-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 14px 40px rgba(0,0,0,0.06);
    height: 100%;
}

.value-card h3 { margin: var(--spacing-sm) 0; }
.value-card p { color: var(--color-text-muted); }

.value-list {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-sm);
}

.value-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    color: var(--color-text-dark);
}

.value-list li::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}

.value-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.metric-card {
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
}

.metric-title {
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.metric-value {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: var(--spacing-xs) 0;
}

.metric-card p { color: var(--color-text-muted); }

/* 首页 - 产品展示 */
.products-showcase { position: relative; }
.products-showcase .product-compare {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.product-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 18px 40px rgba(0,0,0,0.08);
    overflow: hidden;
}

.product-card .tag { position: absolute; top: var(--spacing-sm); right: var(--spacing-sm); padding: 6px 12px; background: rgba(46,125,50,0.12); color: var(--color-primary); border-radius: 999px; font-weight: var(--font-weight-medium); }

.material-cross-section { position: relative; margin-bottom: var(--spacing-md); overflow: hidden; border-radius: var(--border-radius); }
.material-cross-section img { width: 100%; height: auto; }
.layer-label {
    position: absolute;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: var(--font-size-small);
    backdrop-filter: blur(4px);
}
.layer-label.l1 { top: 12%; left: 10%; }
.layer-label.l2 { top: 46%; left: 18%; }
.layer-label.l3 { bottom: 12%; left: 10%; }

.specs { display: flex; flex-wrap: wrap; gap: 10px; margin: var(--spacing-sm) 0 var(--spacing-md); }
.spec { padding: 6px 10px; background: var(--color-surface-muted); border-radius: 10px; color: var(--color-text-muted); font-size: var(--font-size-small); }

/* 首页 - 节能数据 */
.energy-savings {
    background: var(--color-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    box-shadow: 0 18px 42px rgba(0,0,0,0.08);
}

.comparison-chart { display: grid; gap: var(--spacing-md); }
.chart-bar {
    display: grid;
    grid-template-columns: 160px 1fr;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-dark);
}
.chart-bar .bar {
    position: relative;
    height: 16px;
    background: var(--color-surface-muted);
    border-radius: 999px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}
.chart-bar .bar span { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--color-text-dark); }
.chart-bar.traditional .bar::after {
    content: "";
    position: absolute;
    inset: 0;
    width: 100%;
    background: linear-gradient(90deg, #c8c8c8, #9e9e9e);
}
.chart-bar.junsheng .bar::after {
    content: "";
    position: absolute;
    inset: 0;
    width: 65%;
    background: var(--gradient-eco);
}
.chart-bar.junsheng .saving {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-size: 12px;
    font-weight: var(--font-weight-bold);
}

/* 首页 - 应用场景 */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.app-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: 0 12px 30px rgba(0,0,0,0.08);
}

.app-item img { height: 220px; object-fit: cover; border-radius: var(--border-radius); }
.app-item h4 { position: absolute; left: 16px; bottom: 18px; color: #fff; font-size: 1.1rem; }
.app-item .case-count {
    position: absolute;
    right: 12px;
    top: 12px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
}

/* 首页 - 协同流程 */
.flow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.flow-step {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 14px 36px rgba(0,0,0,0.06);
}

.step-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 999px;
    background: var(--gradient-eco);
    color: #fff;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    box-shadow: 0 12px 28px rgba(0,0,0,0.08);
}

.flow-step h4 { margin-bottom: var(--spacing-xs); }
.flow-step p { color: var(--color-text-muted); }

.flow-support {
    margin-top: var(--spacing-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    box-shadow: 0 14px 36px rgba(0,0,0,0.06);
}

.flow-support h3 { margin-bottom: var(--spacing-xs); }
.flow-support p { color: var(--color-text-muted); max-width: 520px; }

.flow-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* 首页 - 洞察 */
.insight-board {
    background: var(--color-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    box-shadow: 0 18px 40px rgba(0,0,0,0.08);
}

.insight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.insight-card {
    color: var(--color-text-dark);
    text-decoration: none;
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.insight-card h4 { font-size: 1.2rem; color: var(--color-text-dark); }
.insight-card p { color: var(--color-text-muted); flex-grow: 1; }
.insight-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(0,0,0,0.1); }

.insight-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-small);
    color: var(--color-text-muted);
}

/* 子页面 - 通用横幅 */
.page-hero {
    position: relative;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: linear-gradient(120deg, rgba(46,125,50,0.92), rgba(0,172,193,0.9));
    color: #fff;
    overflow: hidden;
}

.page-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 180px 180px;
    opacity: 0.6;
}

.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { font-size: var(--font-size-h1); margin: var(--spacing-sm) 0; }
.page-hero p { max-width: 760px; color: rgba(255,255,255,0.9); }
.page-hero .hero-meta { display: flex; gap: var(--spacing-md); flex-wrap: wrap; margin-top: var(--spacing-md); }
.page-hero .meta-pill { padding: 8px 14px; border-radius: 999px; background: rgba(255,255,255,0.12); color: #fff; font-weight: var(--font-weight-medium); }
.subpage-hero { position: relative; padding: var(--spacing-xl) 0 var(--spacing-lg); background: linear-gradient(120deg, rgba(46,125,50,0.92), rgba(0,172,193,0.9)); color: #fff; text-align: center; overflow: hidden; }
.subpage-hero::after { content: \"\"; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px); background-size: 180px 180px; opacity: 0.6; }
.subpage-hero .container { position: relative; z-index: 1; }
.subpage-hero h1 { font-size: var(--font-size-h1); margin-bottom: var(--spacing-sm); }
.subpage-hero p { font-size: var(--font-size-h4); opacity: 0.9; }

/* 子页面布局 */
.content-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-lg);
}

.sidebar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 14px 36px rgba(0,0,0,0.06);
}

.sidebar h4 { margin-bottom: var(--spacing-sm); color: var(--color-text-dark); }
.sidebar ul { list-style: none; padding: 0; }
.sidebar li { margin-bottom: var(--spacing-xs); }
.sidebar a {
    display: block;
    padding: 10px 12px;
    border-radius: 10px;
    color: var(--color-text-dark);
    border: 1px solid transparent;
}
.sidebar a:hover, .sidebar a.active {
    background: rgba(46,125,50,0.08);
    border-color: var(--color-border);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.content-area { display: grid; gap: var(--spacing-md); }

.info-block {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 12px 32px rgba(0,0,0,0.06);
}

.info-block h3 { margin-bottom: var(--spacing-sm); }
.info-block p { color: var(--color-text-muted); }

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-sm);
}

.highlight-card {
    padding: var(--spacing-md);
    background: var(--color-surface-muted);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.timeline {
    position: relative;
    padding-left: 18px;
    border-left: 3px solid var(--color-border);
    display: grid;
    gap: var(--spacing-md);
}

.timeline-item { position: relative; padding-left: var(--spacing-sm); }
.timeline-item::before {
    content: "";
    position: absolute;
    left: -27px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gradient-eco);
    box-shadow: 0 0 0 6px rgba(0,172,193,0.16);
}

/* 案例卡片 */
.case-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--spacing-md); }
.case-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    background: var(--color-surface);
}
.case-card img { height: 220px; object-fit: cover; }
.case-card .content { padding: var(--spacing-md); }
.case-card h3 { margin-bottom: var(--spacing-xs); color: var(--color-primary); }
.case-card p { color: var(--color-text-muted); }

/* 新闻列表 */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--spacing-md); }
.news-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: 0 10px 28px rgba(0,0,0,0.06);
}

.news-card h4 { margin-bottom: var(--spacing-xs); }
.news-card .meta { color: var(--color-text-muted); font-size: var(--font-size-small); margin-bottom: var(--spacing-sm); }
.news-card p { color: var(--color-text-muted); }

/* CTA 与联系 */
.cta-panel {
    background: linear-gradient(120deg, rgba(46,125,50,0.95), rgba(0,172,193,0.9));
    color: #fff;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
    box-shadow: 0 18px 46px rgba(0,0,0,0.16);
}

.cta-panel .btn-ghost { background: rgba(255,255,255,0.18); color: #fff; border: 1px solid rgba(255,255,255,0.24); }

@media (max-width: 768px) { .cta-panel { grid-template-columns: 1fr; } }

/* 页脚 */
.footer {
    background: #0f1f13;
    color: #dfe8df;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.footer h4 { color: #d4ead7; margin-bottom: var(--spacing-sm); }
.footer a { color: #dfe8df; opacity: 0.9; }
.footer a:hover { color: #fff; }
.footer ul { list-style: none; padding: 0; }
.footer li { margin-bottom: 6px; }

.footer .copyright {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: 0.9rem;
}

/* 其他小组件 */
.table-note { color: var(--color-text-muted); font-size: var(--font-size-small); }
.flex { display: flex; gap: var(--spacing-sm); align-items: center; }

/* 移动端微调 */
@media (max-width: 900px) { .content-grid { grid-template-columns: 1fr; } }