/* ============================================
   扬飞智能企业官网 - 蓝绿渐变风格
   ============================================ */

/* ---- 基础变量 ---- */
:root {
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --secondary: #00C9A7;
    --secondary-dark: #00A885;
    --gradient: linear-gradient(135deg, #0066FF 0%, #00C9A7 100%);
    --gradient-hover: linear-gradient(135deg, #0052CC 0%, #00A885 100%);
    --dark: #0A1628;
    --dark-light: #1A2B4A;
    --gray: #6B7B93;
    --gray-light: #E8ECF2;
    --white: #FFFFFF;
    --bg: #F8FAFF;
    --shadow: 0 4px 24px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 12px 48px rgba(0, 102, 255, 0.18);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

/* ---- 重置与基础 ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

[id] { scroll-margin-top: 88px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--dark);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul { list-style: none; }

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- 按钮样式 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 36px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.btn-primary:hover {
    background: var(--gradient-hover);
    box-shadow: 0 6px 24px rgba(0, 102, 255, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.1);
}

.btn-sm { padding: 10px 28px; font-size: 14px; }

.btn-block { width: 100%; }

/* ---- 区块标题 ---- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light { color: var(--white); }

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-header.light .section-tag {
    color: rgba(255,255,255,0.7);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header.light .section-title {
    -webkit-text-fill-color: var(--white);
    background: none;
}

.solutions .section-header.light .section-title {
    -webkit-text-fill-color: transparent;
    background: var(--gradient);
    -webkit-background-clip: text;
    background-clip: text;
}

.section-desc {
    font-size: 17px;
    color: var(--gray);
    max-width: 560px;
    margin: 0 auto;
}

.section-header.light .section-desc {
    color: rgba(255,255,255,0.8);
}

/* ============================================
   导航栏
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo img { height: 44px; width: auto; }

.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    position: relative;
}

.nav-item > a {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--dark);
    border-radius: var(--radius-sm);
}

.nav-item > a:hover,
.nav-item.active > a {
    color: var(--primary);
    background: rgba(0,102,255,0.06);
}

.nav-item .fa-chevron-down {
    font-size: 11px;
    transition: transform 0.3s;
}

.nav-item:hover .fa-chevron-down {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.nav-item:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: var(--white);
}

.dropdown li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    font-size: 14px;
    color: var(--dark);
    transition: var(--transition);
}

.dropdown li a i {
    width: 20px;
    text-align: center;
    color: var(--primary);
}

.dropdown li a:hover {
    background: rgba(0,102,255,0.05);
    color: var(--primary);
    padding-left: 28px;
}

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   Hero Banner
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../images/banner-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.85;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,102,255,0.12) 0%, rgba(0,201,167,0.08) 100%);
}

.hero-slider {
    position: absolute;
    inset: 0;
}

.hero-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide .hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.1);
}

.hero-slide .hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    width: 100%;
    max-width: 800px;
}

.hero-dots {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-dot.active {
    background: var(--white);
    transform: scale(1.2);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 0 24px;
    max-width: 800px;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: 2px;
    line-height: 1.2;
    animation: fadeInUp 0.8s ease;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-btns .btn-outline {
    background: transparent;
    border: none;
    position: relative;
    padding: 14px 36px;
    border-radius: 50px;
}

.hero-btns .btn-outline::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50px;
    padding: 2px;
    background: var(--gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

.hero-btns .btn-outline span {
    position: relative;
    z-index: 1;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-btns .btn-outline:hover::before {
    background: var(--gradient-hover);
}

.hero-btns .btn-outline:hover span {
    background: var(--gradient-hover);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 滚动提示 */
.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-down span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 12px;
    position: relative;
}

.scroll-down span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--white);
    border-radius: 2px;
    animation: scrollBounce 1.5s infinite;
}

@keyframes scrollBounce {
    0%, 100% { opacity: 1; top: 8px; }
    50% { opacity: 0.3; top: 20px; }
}

/* ============================================
   核心数据
   ============================================ */
.stats {
    background: var(--white);
    padding: 80px 0;
    color: var(--dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    flex-wrap: wrap;
}

.stat-num, .stat-unit {
    font-size: 52px;
    font-weight: 800;
    line-height: 1;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-unit { font-size: 36px; }

.stat-label {
    width: 100%;
    font-size: 16px;
    margin-top: 12px;
    font-weight: 600;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   主营业务
   ============================================ */
.business {
    position: relative;
    padding: 96px 0 108px;
    background:
        linear-gradient(180deg, #F7FAFD 0%, #FFFFFF 100%);
    overflow: hidden;
}

.business::before {
    content: '';
    position: absolute;
    inset: 0 auto auto 0;
    width: 32%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 102, 255, 0.08), rgba(0, 201, 167, 0));
    pointer-events: none;
}

.business .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
    gap: 42px;
    align-items: start;
}

.business-header {
    position: sticky;
    top: 96px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 460px;
    padding: 34px;
    border-radius: 8px;
    background:
        linear-gradient(155deg, rgba(10, 22, 40, 0.96), rgba(0, 80, 135, 0.94));
    box-shadow: 0 24px 64px rgba(10, 22, 40, 0.16);
    text-align: left;
    margin-bottom: 0;
    overflow: hidden;
}

.business-header::after {
    content: '硬件 / 平台 / 场景';
    display: block;
    margin-top: 42px;
    padding-top: 22px;
    border-top: 1px solid rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.56);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
}

.business-header .section-title {
    color: var(--white);
    background: none;
    -webkit-text-fill-color: currentColor;
    margin-bottom: 0;
}

.business-header .section-tag {
    color: rgba(255,255,255,0.62);
}

.business-header .section-desc {
    max-width: none;
    margin: 24px 0 0;
    color: rgba(255,255,255,0.78);
    font-size: 16px;
    line-height: 1.95;
}

.business-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.business-card {
    position: relative;
    display: grid;
    grid-template-columns: 66px minmax(120px, 170px) minmax(0, 1fr) auto;
    align-items: center;
    gap: 22px;
    min-height: 132px;
    padding: 22px 24px;
    border: 1px solid rgba(107, 123, 147, 0.15);
    border-radius: 8px;
    background: rgba(255,255,255,0.92);
    box-shadow: 0 12px 32px rgba(10, 22, 40, 0.06);
    overflow: hidden;
    transition: var(--transition);
}

.business-card::after {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

.business-card:hover {
    transform: translateX(6px);
    border-color: rgba(0, 102, 255, 0.3);
    box-shadow: 0 18px 46px rgba(0, 102, 255, 0.12);
}

.business-card:hover::after {
    opacity: 1;
}

.business-card-feature {
    min-height: 156px;
    color: var(--white);
    border-color: transparent;
    background:
        linear-gradient(135deg, rgba(0, 102, 255, 0.96), rgba(0, 184, 174, 0.94));
    box-shadow: 0 20px 52px rgba(0, 102, 255, 0.2);
}

.business-card-top {
    position: relative;
    z-index: 1;
    grid-column: 1;
    grid-row: 1 / span 2;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 0;
}

.business-icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(0, 102, 255, 0.09);
    color: var(--primary);
    font-size: 22px;
}

.business-label {
    display: inline-flex;
    align-items: center;
    min-height: auto;
    padding: 0;
    border: none;
    border-radius: 0;
    color: var(--gray);
    background: transparent;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.business-card-feature .business-icon {
    color: var(--white);
    background: rgba(255, 255, 255, 0.16);
}

.business-card-feature .business-label {
    color: rgba(255,255,255,0.88);
    background: transparent;
}

.business-card h3 {
    position: relative;
    z-index: 1;
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0;
}

.business-card-feature h3 {
    color: var(--white);
    font-size: 24px;
    margin-bottom: 0;
}

.business-card p {
    position: relative;
    z-index: 1;
    grid-column: 3;
    grid-row: 1;
    color: var(--gray);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 0;
}

.business-card-feature p {
    max-width: none;
    color: rgba(255,255,255,0.86);
    font-size: 15px;
}

.business-card a {
    position: relative;
    z-index: 1;
    grid-column: 4;
    grid-row: 1 / span 2;
    justify-self: end;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
}

.business-card a i {
    font-size: 12px;
    transition: transform 0.25s ease;
}

.business-card a:hover {
    color: var(--secondary-dark);
}

.business-card a:hover i {
    transform: translateX(4px);
}

.business-card-feature a {
    color: var(--white);
}

.business-card-feature a:hover {
    color: rgba(255,255,255,0.82);
}

.business-points {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    grid-column: 3 / 4;
    grid-row: 2;
    gap: 8px;
    margin: -10px 0 0;
}

.business-points li {
    padding: 7px 12px;
    border-radius: 999px;
    background: rgba(255,255,255,0.14);
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    font-weight: 600;
}

.business .container {
    display: block;
}

.business-heading {
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 52px;
}

.business-showcase {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(460px, 0.92fr);
    gap: 28px;
    align-items: stretch;
}

.business-visual {
    position: relative;
    min-height: 560px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--dark);
    box-shadow: 0 24px 70px rgba(10, 22, 40, 0.18);
}

.business-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.business-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(10, 22, 40, 0.08), rgba(10, 22, 40, 0.72)),
        linear-gradient(90deg, rgba(0, 102, 255, 0.25), rgba(0, 201, 167, 0.12));
}

.business-visual:hover img {
    transform: scale(1.04);
}

.business-visual-content {
    position: absolute;
    z-index: 1;
    left: 34px;
    right: 34px;
    top: 34px;
    color: var(--white);
}

.business-visual-content > span {
    display: inline-flex;
    margin-bottom: 16px;
    padding: 7px 12px;
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 999px;
    background: rgba(255,255,255,0.12);
    font-size: 13px;
    font-weight: 600;
}

.business-visual-content h3 {
    max-width: 560px;
    margin-bottom: 14px;
    font-size: 34px;
    line-height: 1.25;
    font-weight: 800;
}

.business-visual-content p {
    max-width: 560px;
    color: rgba(255,255,255,0.82);
    font-size: 16px;
    line-height: 1.85;
}

.business-visual-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.business-visual-tags em {
    font-style: normal;
    padding: 8px 13px;
    border-radius: 999px;
    background: rgba(255,255,255,0.16);
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    font-weight: 600;
}

.business-modules {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.business-module {
    display: flex;
    gap: 16px;
    min-height: 168px;
    padding: 24px;
    border: 1px solid rgba(107, 123, 147, 0.14);
    border-radius: 8px;
    background: var(--white);
    box-shadow: 0 12px 34px rgba(10, 22, 40, 0.06);
    transition: var(--transition);
}

.business-module-main {
    grid-column: span 2;
    min-height: 154px;
    background:
        linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 201, 167, 0.08)),
        var(--white);
}

.business-module:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 102, 255, 0.28);
    box-shadow: 0 18px 48px rgba(0, 102, 255, 0.12);
}

.business-module .business-icon {
    flex: 0 0 auto;
    width: 50px;
    height: 50px;
    margin: 0;
    border-radius: 8px;
    background: rgba(0, 102, 255, 0.09);
    color: var(--primary);
}

.business-module span {
    display: block;
    margin-bottom: 6px;
    color: var(--secondary-dark);
    font-size: 13px;
    font-weight: 700;
}

.business-module h3 {
    margin-bottom: 10px;
    color: var(--dark);
    font-size: 20px;
    font-weight: 750;
}

.business-module p {
    margin-bottom: 16px;
    color: var(--gray);
    font-size: 14px;
    line-height: 1.75;
}

.business-module a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
}

.business-module a i {
    font-size: 12px;
    transition: transform 0.25s ease;
}

.business-module a:hover i {
    transform: translateX(4px);
}

.business-panorama {
    position: relative;
    min-height: 680px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--dark);
    box-shadow: 0 30px 80px rgba(10, 22, 40, 0.18);
}

.business-panorama-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.business-panorama-shade {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(248, 250, 255, 0.98) 0%, rgba(248, 250, 255, 0.76) 34%, rgba(248, 250, 255, 0.15) 62%, rgba(10, 22, 40, 0.12) 100%),
        linear-gradient(180deg, rgba(10, 22, 40, 0.02), rgba(10, 22, 40, 0.35));
}

.business-panorama-head {
    position: absolute;
    z-index: 1;
    left: 46px;
    top: 42px;
    width: min(410px, calc(100% - 92px));
}

.business-panorama-head h2 {
    margin: 6px 0 16px;
    color: var(--dark);
    font-size: 42px;
    line-height: 1.14;
    font-weight: 800;
}

.business-panorama-head p {
    color: var(--gray);
    font-size: 16px;
    line-height: 1.9;
}

.business-hub {
    position: absolute;
    z-index: 2;
    left: 46px;
    bottom: 124px;
    width: 300px;
    padding: 24px;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 8px;
    background: rgba(255,255,255,0.78);
    box-shadow: 0 20px 54px rgba(0, 102, 255, 0.16);
    backdrop-filter: blur(14px);
}

.business-hub span,
.business-hub small {
    display: block;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.business-hub strong {
    display: block;
    margin: 8px 0;
    color: var(--dark);
    font-size: 24px;
    line-height: 1.25;
}

.business-hub small {
    color: var(--gray);
    font-weight: 600;
}

.business-pin {
    position: absolute;
    z-index: 2;
    display: grid;
    grid-template-columns: 34px max-content;
    align-items: center;
    gap: 10px;
    width: auto;
    min-width: 148px;
    padding: 10px 14px;
    border: 1px solid rgba(255,255,255,0.56);
    border-radius: 8px;
    color: var(--dark);
    background: rgba(255,255,255,0.84);
    box-shadow: 0 14px 38px rgba(10, 22, 40, 0.12);
    backdrop-filter: blur(12px);
}

.business-pin::before {
    content: '';
    position: absolute;
    left: 24px;
    bottom: -18px;
    width: 1px;
    height: 18px;
    background: rgba(0, 102, 255, 0.42);
}

.business-pin::after {
    content: '';
    position: absolute;
    left: 18px;
    bottom: -29px;
    width: 12px;
    height: 12px;
    border: 3px solid rgba(255,255,255,0.82);
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(0, 102, 255, 0.16);
}

.business-pin i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    color: var(--primary);
    background: rgba(0, 102, 255, 0.1);
    font-size: 15px;
}

.business-pin span,
.business-pin em {
    display: block;
}

.business-pin span {
    margin-bottom: 0;
    font-size: 16px;
    font-weight: 800;
    white-space: nowrap;
}

.business-pin em {
    display: none;
}

.business-pin:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 102, 255, 0.34);
    box-shadow: 0 18px 48px rgba(0, 102, 255, 0.18);
}

.pin-access { left: 45%; top: 28%; }
.pin-elevator { left: 56%; top: 58%; }
.pin-energy { left: 72%; top: 30%; }
.pin-parking { right: 5%; bottom: 14%; }
.pin-park { left: 36%; bottom: 18%; }
.pin-robot { right: 9%; top: 52%; }

.business-panorama-foot {
    position: absolute;
    z-index: 2;
    left: 46px;
    bottom: 44px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.business-panorama-foot a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    border-radius: 999px;
    color: var(--white);
    background: var(--gradient);
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 10px 28px rgba(0, 102, 255, 0.24);
}

.business-panorama-foot a:last-child {
    color: var(--primary);
    background: rgba(255,255,255,0.86);
}

.business-mobile-list {
    display: none;
}

/* ============================================
   智能硬件产品
   ============================================ */
.products {
    padding: 100px 0;
    background: var(--bg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-img {
    height: 240px;
    overflow: hidden;
    position: relative;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-img img {
    transform: scale(1.08);
}

.product-info {
    padding: 28px;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--dark);
}

.product-info p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

.product-link i {
    transition: transform 0.3s;
}

.product-link:hover i {
    transform: translateX(4px);
}

/* ============================================
   解决方案
   ============================================ */
.solutions {
    padding: 80px 0 30px;
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.solutions::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,102,255,0.1) 0%, transparent 70%);
}

.solutions .container { position: relative; z-index: 1; }

.solutions-list { display: flex; flex-direction: column; gap: 30px; }

.solution-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-item.reverse { direction: rtl; }

.solution-item.reverse > * { direction: ltr; }

.solution-img {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.solution-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.solution-img:hover img { transform: scale(1.05); }

.solution-content { color: var(--white); }

.solution-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 16px;
}

.solution-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.solution-header .solution-icon { margin-bottom: 0; }
.solution-header h3 { margin-bottom: 0; margin-top: 12px; }

.solution-content h3 {
    font-size: 32px;
    margin-bottom: 12px;
}

.solution-content > p {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.85;
    margin-bottom: 16px;
}

.solution-features {
    margin-bottom: 16px;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
    font-size: 15px;
    opacity: 0.9;
}

.solution-features li i {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0,201,167,0.2);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    flex-shrink: 0;
}

/* 更多解决方案卡片 */
.more-solutions {
    padding: 60px 0 100px;
    background: var(--dark);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card {
    background: linear-gradient(var(--dark-light), var(--dark-light)) padding-box,
                var(--gradient) border-box;
    border: 2px solid transparent;
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    color: var(--white);
    transition: var(--transition);
}

.solution-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.3),
                0 0 24px rgba(0,102,255,0.15);
}

.solution-card-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 0 auto 24px;
    box-shadow: 0 8px 24px rgba(0,102,255,0.3);
}

.solution-card h4 {
    font-size: 20px;
    margin-bottom: 14px;
}

.solution-card p {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.75;
}

/* ============================================
   关于扬飞
   ============================================ */
.about {
    padding: 80px 0;
    background: var(--white);
}

.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-img {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.about-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient);
    opacity: 0.1;
    z-index: 1;
}

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

.about-content .section-tag,
.about-content .section-title {
    text-align: left;
    margin-bottom: 12px;
}

.about-content .section-title { margin-bottom: 24px; }

.about-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
}

.about-lead {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.about-content > p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--gray);
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 32px 0;
}

.about-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.about-feature:hover {
    background: var(--gradient);
    color: var(--white);
}

.about-feature i {
    font-size: 24px;
    color: var(--primary);
}

.about-feature:hover i { color: var(--white); }

.about-feature span {
    font-size: 13px;
    font-weight: 500;
}

.about-card {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-top: 60px;
    padding: 40px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-light);
}

.about-card-icon {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white);
    box-shadow: 0 8px 24px rgba(0,102,255,0.3);
}

.about-card-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.about-card-content p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--gray);
}

@media (max-width: 768px) {
    .about-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 32px 24px;
        gap: 24px;
    }
}
.honors {
    padding: 50px 0;
    background: var(--bg);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.honor-item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
}

.honor-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.honor-item img {
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: contain;
    transition: transform 0.4s;
}

.honor-item-wide img {
    aspect-ratio: 4 / 3;
}

.honor-item:hover img { transform: scale(1.05); }

/* ============================================
   联系我们
   ============================================ */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #eafff9 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    background: transparent;
    border-radius: 0;
    overflow: visible;
    box-shadow: none;
}

.contact-info {
    padding: 50px;
    background: var(--gradient);
    color: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
}

.contact-info .section-tag {
    color: rgba(255,255,255,0.8);
}

.contact-info .section-title {
    -webkit-text-fill-color: var(--white);
    color: var(--white);
    background: none;
    text-align: left;
    margin-bottom: 12px;
}

.contact-info > p {
    font-size: 15px;
    color: rgba(255,255,255,0.9);
    line-height: 1.7;
    margin-bottom: 40px;
}

.contact-list { display: flex; flex-direction: column; gap: 24px; }

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-item > i {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255,255,255,0.15);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.contact-item span {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.75);
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 16px;
    font-weight: 500;
    color: var(--white);
}

.contact-address { padding-left: 0; }

.address-block { width: 100%; }

.address-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--white);
}

.address-title i {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(255,255,255,0.15);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.address-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.address-item {
    padding: 16px 18px;
    background: rgba(255,255,255,0.12);
    border-radius: var(--radius-sm);
    border-left: 3px solid rgba(255,255,255,0.6);
}

.address-item h4 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--white);
}

.address-item p {
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    color: rgba(255,255,255,0.9);
    opacity: 1;
}

.contact-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.contact-title-row .section-title {
    margin-bottom: 0;
}

.contact-qr {
    width: 90px;
    height: 90px;
    border-radius: 8px;
    object-fit: cover;
    background: #fff;
    padding: 4px;
    box-shadow: var(--shadow);
    position: absolute;
    top: 45px;
    right: 50px;
}

.contact-form-wrapper {
    padding: 50px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
}

.contact-form-header {
    margin-bottom: 32px;
}

.contact-form-header .section-tag {
    color: var(--primary);
}

.contact-form-header .section-title {
    -webkit-text-fill-color: var(--dark);
    color: var(--dark);
    background: none;
    text-align: left;
    margin-bottom: 12px;
}

.contact-form-header > p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
    margin: 0;
}

.contact-form .btn-block {
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0,102,255,0.25);
    transition: var(--transition);
    margin-top: 8px;
    background: var(--gradient);
    color: var(--white);
    border: none;
}

.contact-form .btn-block:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0,102,255,0.35);
    background: var(--gradient);
    color: var(--white);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row .form-group {
    margin-bottom: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 14px;
    border: 1px solid var(--gray-light);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--dark);
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0,102,255,0.08);
    background: var(--white);
}

.form-group textarea {
    resize: vertical;
    min-height: 160px;
}

/* ============================================
   页脚
   ============================================ */
.footer { background: var(--dark); color: var(--white); }

.footer-main { padding: 80px 0 50px; }

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
}

.footer-brand img { height: 44px; margin-bottom: 24px; }

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.footer-qr-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-qr-label {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
    white-space: nowrap;
    margin-top: -10px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-social .footer-qr {
    width: 125px;
    height: 125px;
    min-width: 125px;
    min-height: 125px;
    border-radius: 8px;
    background: #fff;
    box-sizing: border-box;
    padding: 4px;
    flex-shrink: 0;
    display: block;
    object-fit: contain;
}

.footer-links h4 {
    font-size: 16px;
    margin-bottom: 24px;
    color: var(--white);
}

.footer-links li { margin-bottom: 14px; }

.footer-links a {
    font-size: 14px;
    opacity: 0.65;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    opacity: 0.5;
}

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .business-showcase { grid-template-columns: 1fr; }
    .business-visual { min-height: 460px; }
    .business .container { grid-template-columns: 1fr; gap: 26px; }
    .business-header {
        position: relative;
        top: auto;
        min-height: auto;
    }
    .business-header::after { margin-top: 28px; }
    .business-card {
        grid-template-columns: 64px minmax(120px, 160px) minmax(0, 1fr) auto;
    }
    .honors-grid { grid-template-columns: repeat(2, 1fr); }
    .about-wrapper { gap: 40px; }
}

@media (max-width: 768px) {
    .hero-title { font-size: 40px; }
    .hero-subtitle { font-size: 17px; }
    .hero-btns { flex-direction: column; align-items: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .products-grid { grid-template-columns: 1fr; }
    .business { padding: 72px 0; }
    .business-heading { margin-bottom: 34px; }
    .business-visual { min-height: 430px; }
    .business-visual-content {
        left: 24px;
        right: 24px;
        top: 24px;
        bottom: auto;
    }
    .business-visual-content h3 { font-size: 24px; }
    .business-modules { grid-template-columns: 1fr; }
    .business-module,
    .business-module-main {
        grid-column: auto;
        min-height: auto;
    }
    .business-header { padding: 28px; }
    .business-header::after { font-size: 12px; }
    .business-card,
    .business-card-feature,
    .business-card-compact {
        grid-template-columns: 1fr;
        align-items: start;
        gap: 14px;
        min-height: auto;
        padding: 24px;
    }
    .business-card-top {
        grid-column: auto;
        grid-row: auto;
        flex-direction: row;
        justify-content: space-between;
        width: 100%;
    }
    .business-card h3,
    .business-card p,
    .business-card a,
    .business-points {
        grid-column: auto;
        grid-row: auto;
    }
    .business-card a { justify-self: start; }
    .business-card-feature h3 { font-size: 26px; }
    .business-header .section-desc { font-size: 15px; }
    .business-card p { margin-bottom: 4px; }
    .business-points {
        grid-column: auto;
        margin: 0;
    }
    .solution-item,
    .solution-item.reverse { grid-template-columns: 1fr; direction: ltr; }
    .solution-item > * { direction: ltr; }
    .solutions-grid { grid-template-columns: 1fr; }
    .about-wrapper { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: repeat(2, 1fr); }
    .contact-wrapper { grid-template-columns: 1fr; }
    .contact-info { padding: 40px; }
    .contact-form-wrapper { padding: 40px; }
    .contact-form-header { margin-bottom: 24px; }
    .address-item { padding: 14px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
    .section-title { font-size: 28px; }

    /* 移动端导航 */
    .mobile-toggle { display: flex; }
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--white);
        padding: 20px 24px;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: opacity 0.3s ease, visibility 0.3s ease;
        overflow-y: auto;
    }
    .nav.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
    .nav-item > a { padding: 14px 0; justify-content: space-between; border-radius: 0; }
    .dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        padding: 0 0 0 20px;
        display: none;
    }
    .dropdown::before { display: none; }
    .nav-item.open .dropdown { display: block; }
    .nav-item.open .fa-chevron-down { transform: rotate(180deg); }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 32px; }
}

/* ============================================
   解决方案二级页面样式
   ============================================ */

.solution-hero {
    position: relative;
    min-height: 300px;
    height: 0;
    padding-bottom: 43.75%; /* 16:7 aspect ratio */
    background: var(--dark);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
    overflow: hidden;
    text-align: center;
}

.solution-hero .page-hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
}

.solution-hero .page-hero-content.page-hero-left {
    left: 0;
    transform: translateY(-50%);
    text-align: left;
    padding: 0 8%;
    z-index: 2;
    position: relative;
}

.solution-hero .page-hero-content.page-hero-left .page-hero-title {
    margin-bottom: 20px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    font-size: 48px;
    font-weight: 800;
}

.solution-hero .page-hero-content.page-hero-left .page-hero-desc {
    max-width: 700px;
    margin: 0;
    text-shadow: 0 1px 4px rgba(0,0,0,0.5);
    font-size: 18px;
    color: rgba(255,255,255,0.9);
    line-height: 1.6;
}

.solution-hero .page-hero-overlay {
    background: rgba(0, 0, 0, 0.1);
    position: absolute;
    inset: 0;
    z-index: 1;
}

.solution-hero .container {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    padding: 0 8%;
    box-sizing: border-box;
}

/* 面包屑导航 */
.breadcrumb {
    background: var(--bg);
    padding: 16px 0;
    font-size: 14px;
}

.breadcrumb a {
    color: var(--gray);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: var(--primary);
}

.breadcrumb span {
    margin: 0 12px;
    color: var(--gray-light);
}

/* 解决方案内容区域 */
.solution-content {
    padding: 80px 0;
}

.solution-content .container {
    max-width: 1200px;
}

.solution-overview {
    margin-bottom: 60px;
    text-align: center;
}

.solution-overview h2,
.solution-features h2,
.solution-scenarios h2,
.solution-products h2,
.solution-advantages h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-overview h2::after,
.solution-features h2::after,
.solution-scenarios h2::after,
.solution-products h2::after,
.solution-advantages h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.solution-overview p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray);
    max-width: 900px;
    margin: 0 auto;
}

/* 核心功能 */
.solution-features {
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-item {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.feature-item .feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-item .feature-icon i {
    font-size: 32px;
    color: var(--white);
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* 适用场景 */
.solution-scenarios {
    margin-bottom: 40px;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.scenario-item {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.scenario-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.scenario-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.scenario-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    padding: 20px 20px 8px;
}

.scenario-item p {
    font-size: 14px;
    color: var(--gray);
    padding: 0 20px 20px;
}

/* 开门到位 */
.solution-door {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-door h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-door h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.solution-door-desc {
    color: var(--gray);
    font-size: 1rem;
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 30px;
}

.door-image img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 30px;
}

.door-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.highlight-card {
    background: var(--bg);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.1);
}

.highlight-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.highlight-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.highlight-card h3 {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 10px;
}

.highlight-card p {
    font-size: 0.9rem;
    color: var(--gray);
}

/* 专业API对接 */
.solution-api {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-api h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-api h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.api-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.api-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 梯控系统拓扑图 */
.solution-topology {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-topology h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-topology h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.topology-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.topology-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 通行场景应用 */
.solution-scenarios {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.scenarios-desc {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 32px;
}

.scenarios-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.scenarios-image img {
    width: 100%;
    height: auto;
    display: block;
}

.scenario-item {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.scenario-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.scenario-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.scenario-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    padding: 20px 20px 8px;
}

.scenario-item p {
    font-size: 14px;
    color: var(--gray);
    padding: 0 20px 20px;
}

/* 多种认证方式 */
.solution-auth {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-auth h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-auth h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.auth-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.auth-item {
    text-align: center;
}

.auth-item .auth-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--bg);
}

.auth-item .auth-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.auth-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
}

/* 权限管理：离线也能正常通行 */
.solution-offline {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-offline h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-offline h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.offline-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.offline-item {
    text-align: center;
}

.offline-item .offline-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--bg);
}

.offline-item .offline-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.offline-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.offline-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* VIP乘梯通行 */
.solution-vip {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-vip h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-vip h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.vip-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.vip-desc {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 32px;
}

.vip-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* AI智能分析 */
.solution-ai {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-ai h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-ai h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.ai-item {
    text-align: center;
}

.ai-item .ai-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--bg);
}

.ai-item .ai-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.ai-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* 访客通行 */
.solution-visitor {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-visitor h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-visitor h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.visitor-desc {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.8;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 32px;
}

.visitor-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.visitor-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 适用场景 */
.solution-applications {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-applications h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-applications h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.applications-item {
    text-align: center;
}

.applications-item .applications-image {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 16px;
    background: var(--bg);
}

.applications-item .applications-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.applications-item h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.applications-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* 相关产品 */
.solution-products {
    margin-bottom: 40px;
}

.solution-products .products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.solution-products .product-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.solution-products .product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.solution-products .product-img {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.solution-products .product-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.solution-products .product-info {
    padding: 20px;
    text-align: center;
}

.solution-products .product-model {
    display: block;
    font-size: 12px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.solution-products .product-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.solution-products .product-info p {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 16px;
}

/* 方案优势 */
.solution-advantages {
    margin-bottom: 40px;
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 24px;
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.advantage-num {
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    min-width: 80px;
}

.advantage-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.advantage-content p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* 梯控系统架构 */
.solution-architecture {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-architecture h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-architecture h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.architecture-content p {
    font-size: 16px;
    color: var(--gray);
    text-align: center;
    margin-bottom: 32px;
}

.architecture-diagram {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.arch-layer {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px;
    background: var(--bg);
    border-radius: 12px;
}

.arch-layer-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    min-width: 80px;
    text-align: center;
}

.arch-layer-items {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.arch-layer-items span {
    padding: 8px 16px;
    background: var(--gradient);
    color: var(--white);
    border-radius: 50px;
    font-size: 14px;
}

.architecture-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.architecture-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 机器人与梯控系统对接方案 */
.solution-integration {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-integration h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-integration h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.integration-content {
    display: flex;
    gap: 24px;
}

.integration-item {
    flex: 1;
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg);
    border-radius: 12px;
}

.integration-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.integration-icon i {
    font-size: 24px;
    color: var(--white);
}

.integration-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.integration-info p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.integration-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.integration-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 机器人乘梯流程 */
.solution-process {
    margin-bottom: 40px;
    padding: 40px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

.solution-process h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 24px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-process h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.process-steps {
    display: flex;
    gap: 24px;
}

.process-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px;
    background: var(--bg);
    border-radius: 12px;
}

.step-num {
    width: 48px;
    height: 48px;
    background: var(--gradient);
    color: var(--white);
    font-size: 24px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

.process-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.process-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 客户案例 */
.solution-cases {
    margin-bottom: 40px;
}

.solution-cases h2 {
    font-size: 40px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 48px;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.solution-cases h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
    margin: 16px auto 0;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-item {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.case-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-info {
    padding: 24px;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.case-info p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
}

/* 底部联系区域 */
.solution-contact {
    padding: 80px 0;
    background: var(--gradient);
}

.solution-contact .container {
    max-width: 1200px;
}

.contact-box {
    text-align: center;
    color: var(--white);
}

.contact-box h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-box p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.9;
}

.contact-box .btn-primary {
    background: var(--white);
    color: var(--primary);
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    display: inline-block;
    transition: var(--transition);
}

.contact-box .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* 响应式 */
@media (max-width: 992px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
    .solution-products .products-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .integration-content { flex-direction: column; }
    .process-steps { flex-wrap: wrap; }
    .process-step { min-width: calc(50% - 12px); }
}

@media (max-width: 768px) {
    .solution-hero { padding: 160px 0 80px; }
    .solution-content { padding: 60px 0; }
    .solution-overview h2,
    .solution-features h2,
    .solution-architecture h2,
    .solution-integration h2,
    .solution-process h2,
    .solution-cases h2 { font-size: 32px; }
    .features-grid { grid-template-columns: 1fr; }
    .scenarios-grid { grid-template-columns: 1fr; }
    .solution-products .products-grid { grid-template-columns: 1fr; }
    .advantage-item { flex-direction: column; text-align: center; }
    .cases-grid { grid-template-columns: 1fr; }
    .arch-layer { flex-direction: column; text-align: center; }
    .process-steps { flex-direction: column; }
}

@media (max-width: 1024px) {
    .business-panorama {
        min-height: auto;
        padding: 34px;
    }

    .business-panorama-img,
    .business-panorama-shade {
        position: absolute;
    }

    .business-panorama-head,
    .business-hub,
    .business-panorama-foot {
        position: relative;
        left: auto;
        right: auto;
        top: auto;
        bottom: auto;
    }

    .business-panorama-head {
        width: min(520px, 100%);
        margin-bottom: 28px;
    }

    .business-hub {
        width: min(360px, 100%);
        margin-bottom: 26px;
    }

    .business-pin {
        display: none;
    }

    .business-mobile-list {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .business-mobile-list a {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 16px;
        border: 1px solid rgba(255,255,255,0.55);
        border-radius: 8px;
        background: rgba(255,255,255,0.86);
        box-shadow: 0 12px 30px rgba(10, 22, 40, 0.1);
        backdrop-filter: blur(12px);
    }

    .business-mobile-list i {
        flex: 0 0 auto;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 8px;
        color: var(--primary);
        background: rgba(0, 102, 255, 0.1);
    }

    .business-mobile-list strong,
    .business-mobile-list span {
        display: block;
    }

    .business-mobile-list strong {
        margin-bottom: 4px;
        color: var(--dark);
        font-size: 17px;
    }

    .business-mobile-list span {
        color: var(--gray);
        font-size: 13px;
        line-height: 1.55;
    }

    .business-panorama-foot {
        margin-top: 22px;
    }
}

@media (max-width: 768px) {
    .business-panorama {
        padding: 24px;
    }

    .business-panorama-head h2 {
        font-size: 34px;
    }

    .business-hub {
        padding: 20px;
    }

    .business-hub strong {
        font-size: 22px;
    }

    .business-mobile-list {
        grid-template-columns: 1fr;
    }

    .business-panorama-foot {
        flex-direction: column;
    }

    .business-panorama-foot a {
        width: 100%;
        justify-content: center;
    }
}

/* Business section: image field with service cards */
.business-bg-section {
    position: relative;
    padding: 112px 0 118px;
    background:
        linear-gradient(90deg, rgba(10, 22, 40, 0.88) 0%, rgba(10, 22, 40, 0.62) 48%, rgba(10, 22, 40, 0.78) 100%),
        url('/images/ying-yong-chang-jing-qi-ye-yuan-qu.png') center / cover no-repeat;
    color: var(--white);
    isolation: isolate;
}

.business-bg-section::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(180deg, rgba(0, 102, 255, 0.12), rgba(0, 201, 167, 0.06)),
        linear-gradient(0deg, rgba(10, 22, 40, 0.26), rgba(10, 22, 40, 0));
    pointer-events: none;
}

.business-bg-section .container {
    position: relative;
    z-index: 1;
    display: block;
}

.business-bg-header {
    width: min(920px, 100%);
    margin-bottom: 34px;
}

.business-bg-header .section-tag {
    color: rgba(83, 226, 211, 0.92);
}

.business-bg-header h2 {
    margin: 0 0 16px;
    color: var(--white);
    font-size: 44px;
    line-height: 1.18;
    font-weight: 800;
}

.business-bg-header p {
    max-width: 900px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 17px;
    line-height: 1.85;
}

.business-bg-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.business-bg-card {
    position: relative;
    min-height: 252px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 26px;
    border: 1px solid rgba(255, 255, 255, 0.34);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 18px 44px rgba(4, 12, 24, 0.22);
    color: var(--dark);
    overflow: hidden;
    backdrop-filter: blur(14px);
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.business-bg-card::after {
    content: '';
    position: absolute;
    left: 26px;
    right: 26px;
    bottom: 0;
    height: 3px;
    background: var(--gradient);
    opacity: 0.8;
}

.business-bg-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.72);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 24px 58px rgba(0, 102, 255, 0.24);
}

.business-bg-card.card-primary {
    color: var(--white);
    background:
        linear-gradient(135deg, rgba(0, 102, 255, 0.9), rgba(0, 168, 133, 0.78)),
        rgba(10, 22, 40, 0.55);
}

.business-bg-card.card-primary::after {
    background: rgba(255, 255, 255, 0.88);
}

.business-bg-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    border-radius: 8px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    font-size: 22px;
}

.business-bg-card.card-primary .business-bg-icon {
    background: rgba(255, 255, 255, 0.18);
    color: var(--white);
}

.business-bg-card span {
    display: block;
    margin-bottom: 8px;
    color: var(--secondary-dark);
    font-size: 13px;
    font-weight: 700;
}

.business-bg-card.card-primary span {
    color: rgba(255, 255, 255, 0.76);
}

.business-bg-card h3 {
    margin: 0 0 12px;
    color: inherit;
    font-size: 24px;
    line-height: 1.25;
    font-weight: 750;
}

.business-bg-card.card-primary h3 {
    font-size: 26px;
}

.business-bg-card p {
    margin: 0 0 24px;
    color: rgba(10, 22, 40, 0.68);
    font-size: 15px;
    line-height: 1.75;
}

.business-bg-card.card-primary p {
    color: rgba(255, 255, 255, 0.84);
    font-size: 15px;
}

.business-bg-card em {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: auto;
    color: var(--primary);
    font-style: normal;
    font-size: 14px;
    font-weight: 700;
}

.business-bg-card.card-primary em {
    color: var(--white);
}

.business-bg-card em i {
    font-size: 12px;
    transition: transform 0.25s ease;
}

.business-bg-card:hover em i {
    transform: translateX(4px);
}

@media (max-width: 1024px) {
    .business-bg-section {
        padding: 92px 0 98px;
        background-position: 42% center;
    }

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

}

@media (max-width: 768px) {
    .business-bg-section {
        padding: 72px 0 78px;
    }

    .business-bg-header h2 {
        font-size: 34px;
    }

    .business-bg-header p {
        font-size: 15px;
    }

    .business-bg-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .business-bg-card {
        min-height: auto;
        padding: 22px;
    }

    .business-bg-card.card-primary h3 {
        font-size: 25px;
    }
}