/* ================================
   武汉辰丰凯信息科技有限公司 - 官网样式
   简约欧美SaaS风格
   ================================ */

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

:root {
    /* 品牌色系 */
    --primary: #2563EB;
    --primary-dark: #1E40AF;
    --primary-light: #3B82F6;
    --primary-lighter: #DBEAFE;
    --accent: #06B6D4;
    --accent-light: #67E8F9;

    /* 中性色 */
    --dark: #0F172A;
    --dark-soft: #1E293B;
    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F8FAFC;
    --white: #FFFFFF;

    /* 渐变 */
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #1E40AF 100%);
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
    --gradient-accent: linear-gradient(135deg, #2563EB 0%, #06B6D4 100%);
    --gradient-soft: linear-gradient(180deg, #F8FAFC 0%, #EFF6FF 100%);

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-blue: 0 10px 30px -5px rgba(37, 99, 235, 0.3);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* 布局 */
    --header-height: 72px;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: var(--gray-700);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

.container-narrow {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.6);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

.navbar .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: -0.02em;
}

.nav-logo .logo-icon {
    width: 38px;
    height: 38px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    font-weight: 800;
    box-shadow: var(--shadow-blue);
}

.nav-logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.nav-logo .logo-text .en {
    font-size: 0.7rem;
    color: var(--gray-400);
    font-weight: 500;
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-600);
    position: relative;
    padding: 8px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-actions .btn-contact {
    padding: 10px 24px;
    background: var(--dark);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-actions .btn-contact:hover {
    background: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-blue);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

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

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== 按钮通用 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-blue);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px -5px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--dark);
    border: 1.5px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-dark:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}

/* ===== CSS图标替代方案 ===== */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    line-height: 1;
    font-style: normal;
}

/* ===== Hero区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -300px;
    left: -200px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    color: white;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, #60A5FA 0%, #22D3EE 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat .number {
    font-size: 2rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
}

.hero-stat .label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}

/* Hero视觉区域 — 主流 Grid 布局：大卡 + 双小卡 */
.hero-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 14px;
    align-content: center;
}

.hero-card {
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    transition: var(--transition-slow);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.hero-card:hover {
    background: rgba(255, 255, 255, 0.11);
    border-color: rgba(255, 255, 255, 0.18);
    transform: translateY(-3px);
}

/* 大卡：跨满整行，用 ::before 实现渐变顶边，保留圆角 */
.hero-card-1 {
    grid-column: 1 / -1;
    position: relative;
    overflow: hidden;
    animation: float 7s ease-in-out infinite;
    display: flex;
    gap: 24px;
    align-items: center;
    justify-content: space-between;
}

.hero-card-1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #3B82F6, #22D3EE);
    border-radius: 0;
}

/* 小卡1 */
.hero-card-2 {
    animation: float 7s ease-in-out infinite 2.5s;
}

/* 小卡2 */
.hero-card-3 {
    animation: float 7s ease-in-out infinite 5s;
    background: rgba(37, 99, 235, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* 大卡内部左右布局辅助 */
.hero-card-1 .card-main {
    flex: 1;
}

.hero-card-1 .card-stat {
    text-align: right;
    flex-shrink: 0;
}

.hero-card .card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: white;
    margin-bottom: 6px;
}

.hero-card .card-desc {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
    margin-bottom: 8px;
}

.hero-card .card-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    margin: 0 0 4px;
}

.hero-card .card-trend {
    font-size: 0.75rem;
    color: #34D399;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

.hero-card .card-trend::before {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 6px solid #34D399;
}

/* ===== 通用Section ===== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-soft {
    background: var(--gradient-soft);
}

.section-dark {
    background: var(--dark);
    color: white;
}

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-lighter);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-dark .section-tag {
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary-light);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-dark .section-header h2 {
    color: white;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-500);
    line-height: 1.7;
}

.section-dark .section-header p {
    color: rgba(255, 255, 255, 0.6);
}

/* ===== 业务卡片 ===== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.business-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.business-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.business-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.business-card:hover::before {
    transform: scaleX(1);
}

.business-card .icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 24px;
    transition: var(--transition);
    font-weight: 700;
}

.business-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.business-card p {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}

.business-card .card-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.business-card .card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--gray-600);
}

.business-card .card-features li::before {
    content: '';
    width: 20px;
    height: 20px;
    background: var(--primary-lighter);
    border-radius: 50%;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232563EB' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

/* ===== 优势区域 ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 32px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.advantage-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(37, 99, 235, 0.3);
    transform: translateX(4px);
}

.advantage-item .adv-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
    min-width: 60px;
}

.advantage-item .adv-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.advantage-item .adv-content p {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

/* ===== 数据展示 ===== */
.stats-section {
    background: var(--gradient-soft);
    padding: 80px 0;
}

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

.stat-item {
    padding: 24px;
}

.stat-item .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-item .stat-label {
    font-size: 0.95rem;
    color: var(--gray-500);
    margin-top: 12px;
    font-weight: 500;
}

/* ===== 发展愿景 ===== */
.vision-section {
    position: relative;
    padding: 90px 0;
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    overflow: hidden;
}

.vision-subquote {
    max-width: 760px;
    margin: 0 auto;
    font-size: 1.05rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.vision-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.vision-card {
    background: #FFFFFF;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
}

.vision-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    transition: var(--transition);
}

.vision-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 25px -5px rgba(37, 99, 235, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    border-color: rgba(37, 99, 235, 0.25);
}

.vision-card:hover::before {
    background: var(--gradient-primary);
}

.vision-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.vision-card:hover .vision-icon-wrapper {
    transform: scale(1.08);
}

.vision-icon-blue {
    background: #EFF6FF;
    color: #2563EB;
}

.vision-icon-cyan {
    background: #ECFEFF;
    color: #06B6D4;
}

.vision-icon-emerald {
    background: #ECFDF5;
    color: #10B981;
}

.vision-icon-purple {
    background: #F5F3FF;
    color: #8B5CF6;
}

.vision-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.vision-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .vision-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 640px) {
    .vision-cards-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* 兼容原有样式 */
.vision-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

/* ===== CTA区域 ===== */
.cta-section {
    padding: 80px 0;
}

.cta-box {
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-box::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-box h2 {
    position: relative;
    font-size: 2.2rem;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-box p {
    position: relative;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
}

.cta-box .hero-actions {
    position: relative;
    justify-content: center;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.6);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-brand .nav-logo {
    margin-bottom: 20px;
}

.footer-brand .nav-logo .logo-text {
    color: white;
}

.footer-brand p {
    font-size: 0.88rem;
    line-height: 1.75;
    max-width: 340px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col ul a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.45);
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: var(--primary-light);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 12px;
    line-height: 1.6;
}

.footer-contact li:last-child {
    margin-bottom: 0;
}

.footer-contact li .contact-icon {
    flex-shrink: 0;
    margin-top: 2px;
    width: 15px;
    height: 15px;
    display: inline-block;
}

.footer-contact li .contact-icon svg {
    width: 100%;
    height: 100%;
}

/* 底部信息栏：版权 + 备案 + 许可证 统一整合 */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 28px 0 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-bottom .footer-copyright {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px 20px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom .footer-copyright a {
    color: rgba(255, 255, 255, 0.35);
    transition: var(--transition);
}

.footer-bottom .footer-copyright a:hover {
    color: var(--primary-light);
}

.footer-bottom .footer-licenses {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 20px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.25);
}

.footer-bottom .footer-licenses a {
    color: rgba(255, 255, 255, 0.25);
}

.footer-bottom .footer-licenses a:hover {
    color: var(--primary-light);
}

/* ===== 资质展示区（样式定义在文件末尾统一管理） ===== */

/* ===== 表单隐私声明 ===== */
.form-privacy {
    margin-top: 16px;
    font-size: 0.78rem;
    color: var(--gray-400);
    line-height: 1.6;
}

.form-privacy input[type="checkbox"] {
    width: 14px;
    height: 14px;
    margin-right: 6px;
    vertical-align: middle;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-privacy a {
    color: var(--primary);
    text-decoration: underline;
}

/* ===== 页面Banner ===== */
.page-banner {
    padding: calc(var(--header-height) + 80px) 0 80px;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: white;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.page-banner p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.65);
    max-width: 600px;
    line-height: 1.7;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover {
    color: white;
}

/* ===== 业务详情页 ===== */
.detail-section {
    padding: 80px 0;
}

.detail-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.detail-block:last-child {
    margin-bottom: 0;
}

.detail-block.reverse {
    direction: rtl;
}

.detail-block.reverse > * {
    direction: ltr;
}

.detail-text .section-tag {
    margin-bottom: 16px;
}

.detail-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    line-height: 1.3;
}

.detail-text p {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.8;
    margin-bottom: 24px;
}

.detail-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.detail-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.detail-feature .feature-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-lighter);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.detail-feature .feature-icon svg {
    width: 20px;
    height: 20px;
}

.detail-feature .feature-text h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.detail-feature .feature-text p {
    font-size: 0.88rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin: 0;
}

/* 详情页视觉 */
.detail-visual {
    position: relative;
    height: 400px;
    background: var(--gradient-soft);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.detail-visual .visual-icon-wrap {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-blue);
    position: relative;
    z-index: 2;
}

.detail-visual .visual-icon-wrap svg {
    width: 56px;
    height: 56px;
    color: white;
}

.detail-visual .visual-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
}

/* 详情页视觉装饰 */
.detail-visual .visual-deco {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
}

.detail-visual .visual-deco-1 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
    top: 20px;
    left: 20px;
}

.detail-visual .visual-deco-2 {
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    bottom: 20px;
    right: 20px;
}

/* ===== 关于我们页 ===== */
.about-intro {
    padding: 80px 0;
}

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

.about-intro-text h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.about-intro-text p {
    font-size: 1.05rem;
    color: var(--gray-500);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-intro-visual {
    height: 420px;
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-intro-visual::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.about-intro-visual::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.about-intro-visual .company-initial {
    font-size: 8rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.15);
    letter-spacing: -0.05em;
    position: relative;
    z-index: 2;
}

/* 时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--gray-200), transparent);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 20px 40px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 28px;
    width: 14px;
    height: 14px;
    background: white;
    border: 3px solid var(--primary);
    border-radius: 50%;
    z-index: 2;
}

.timeline-item:nth-child(odd)::before {
    right: -7px;
}

.timeline-item:nth-child(even)::before {
    left: -7px;
}

.timeline-item .timeline-year {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-item .timeline-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
}

.timeline-item .timeline-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== 联系我们页 ===== */
.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
}

.contact-info-card {
    background: var(--gradient-hero);
    border-radius: var(--radius-xl);
    padding: 48px;
    color: white;
    position: relative;
    overflow: hidden;
}

.contact-info-card::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}

.contact-info-card h3 {
    position: relative;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.contact-info-card .contact-subtitle {
    position: relative;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 40px;
}

.contact-info-list {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

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

.contact-info-item .info-icon {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-item .info-icon svg {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.8);
}

.contact-info-item .info-content .info-label {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.contact-info-item .info-content .info-value {
    font-size: 1rem;
    color: white;
    font-weight: 500;
    line-height: 1.6;
}

/* 联系表单 */
.contact-form-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-lg);
}

.contact-form-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.contact-form-card .form-subtitle {
    font-size: 0.95rem;
    color: var(--gray-500);
    margin-bottom: 32px;
}

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

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--gray-800);
    font-family: inherit;
    transition: var(--transition);
    background: var(--gray-50);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-submit {
    width: 100%;
    margin-top: 8px;
}

/* ===== 滚动动画 ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .hero-visual {
        height: 500px;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

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

    .nav-toggle {
        display: flex;
    }

    .nav-menu.mobile-open {
        display: flex;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        box-shadow: var(--shadow-xl);
        border-bottom: 1px solid var(--gray-200);
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + 40px);
        padding-bottom: 60px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .hero-visual {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .hero-card {
        animation: none;
    }

    .hero-card-1 {
        flex-direction: column;
        gap: 12px;
    }

    .hero-card-1 .card-stat {
        text-align: left;
    }

    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }

    .hero-stat .number {
        font-size: 1.5rem;
    }

    .section {
        padding: 64px 0;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header {
        margin-bottom: 40px;
    }

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

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-item .stat-number {
        font-size: 2rem;
    }

    .detail-block,
    .detail-block.reverse {
        grid-template-columns: 1fr;
        gap: 32px;
        direction: ltr;
        margin-bottom: 60px;
    }

    .detail-visual {
        height: 280px;
    }

    .about-intro-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-intro-visual {
        height: 280px;
    }

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

    .contact-info-card,
    .contact-form-card {
        padding: 32px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .vision-content .vision-quote {
        font-size: 1.3rem;
    }

    .vision-values {
        gap: 24px;
    }

    .page-banner {
        padding: calc(var(--header-height) + 40px) 0 40px;
    }

    .page-banner h1 {
        font-size: 2rem;
    }

    .cta-box {
        padding: 40px 24px;
    }

    .cta-box h2 {
        font-size: 1.6rem;
    }

    /* 时间线移动端 */
    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 56px;
        padding-right: 0;
    }

    .timeline-item::before {
        left: 13px !important;
        right: auto !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

/* ===== 关于我们 - 数据亮点行 ===== */
.about-stats {
    display: flex;
    gap: 36px;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.about-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.about-stat-num {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
    line-height: 1;
}

.about-stat-num small {
    font-size: 1rem;
    font-weight: 700;
}

.about-stat-label {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 500;
}

/* 社会信用代码内联徽章 */
.credit-code {
    display: inline-block;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.88em;
    font-style: normal;
    background: var(--primary-lighter);
    color: var(--primary-dark);
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.15);
}

/* ===== 企业理念 - 重新设计两栏布局 ===== */
.vision-redesign {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.vision-left .vision-title {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.03em;
    margin: 16px 0 20px;
    line-height: 1.2;
}

.vision-left .vision-sub {
    font-size: 1rem;
    color: var(--gray-500);
    line-height: 1.85;
    margin-bottom: 28px;
}

.vision-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.vision-tags span {
    padding: 6px 16px;
    background: var(--primary-lighter);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 600;
    border: 1px solid rgba(37, 99, 235, 0.15);
}

/* 右侧 2×2 价值卡片 */
.value-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.value-card {
    background: var(--card-bg, #EFF6FF);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--card-accent, var(--primary));
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
    border-color: var(--card-accent, var(--primary));
}

.value-card-name {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--card-accent, var(--primary));
    margin-bottom: 8px;
}

.value-card-desc {
    font-size: 0.82rem;
    color: var(--gray-500);
    line-height: 1.65;
}

@media (max-width: 768px) {
    .vision-redesign {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .vision-left .vision-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .value-cards-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 关于我们 - 资质证书区块 ===== */
.qualifications-section {
    padding: 80px 0;
    background: var(--gradient-soft);
}

.qualifications-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 32px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
}

.qualification-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qualification-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: var(--transition);
}

.qualification-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.qualification-card:hover::after {
    transform: scaleX(1);
}

.qualification-card .qual-icon {
    width: 52px;
    height: 52px;
    background: var(--primary-lighter);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    transition: var(--transition);
}

.qualification-card:hover .qual-icon {
    background: var(--gradient-primary);
}

.qualification-card .qual-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    transition: var(--transition);
}

.qualification-card:hover .qual-icon svg {
    color: white;
}

.qualification-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
    line-height: 1.4;
}

.qualification-card .qual-number {
    font-size: 0.78rem;
    color: var(--gray-400);
    margin-bottom: 10px;
    font-family: monospace;
}

.qualification-card .qual-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    background: #D1FAE5;
    color: #065F46;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
}

.qualification-card .qual-status::before {
    content: '';
    width: 6px;
    height: 6px;
    background: #10B981;
    border-radius: 50%;
    flex-shrink: 0;
}

.qualification-note {
    text-align: center;
    font-size: 0.88rem;
    color: var(--gray-500);
    line-height: 1.7;
}

.qualification-note a {
    color: var(--primary);
    font-weight: 500;
}

.qualification-note a:hover {
    text-decoration: underline;
}

@media (max-width: 1024px) {
    .qualifications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .about-stats {
        gap: 20px;
    }

    .about-stat-num {
        font-size: 1.4rem;
    }
}

@media (max-width: 768px) {
    .qualifications-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--dark);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-blue);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .back-to-top svg {
        width: 20px;
        height: 20px;
    }

    /* vision-redesign 响应式 gap 修复 */
    .vision-redesign {
        gap: 36px;
    }
}