/* ============================================
   Jujing Tech Theme - Main Stylesheet
   信息技术公司科技主题样式系统
   ============================================ */

/* ---- 色彩系统 ---- */
:root {
    --color-primary: #0A2463;
    --color-primary-light: #1A3A7A;
    --color-primary-dark: #061B4A;
    --color-secondary: #00B4D8;
    --color-secondary-light: #48CAE4;
    --color-secondary-dark: #0096C7;
    --color-accent: #FF6B35;
    --color-gradient: linear-gradient(135deg, #0A2463, #00B4D8);
    --color-gradient-reverse: linear-gradient(135deg, #00B4D8, #0A2463);
    --color-dark: #0D1321;
    --color-dark-2: #1D2D44;
    --color-gray-900: #1a1a2e;
    --color-gray-800: #2d2d44;
    --color-gray-700: #4a4a5a;
    --color-gray-600: #6c6c80;
    --color-gray-500: #8e8e9e;
    --color-gray-400: #b0b0bc;
    --color-gray-300: #d0d0da;
    --color-gray-200: #e8e8ee;
    --color-gray-100: #f4f4f8;
    --color-white: #ffffff;
    --color-bg: #f8f9fc;
    --color-bg-alt: #f0f2f8;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 30px rgba(0,180,216,0.3);

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --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);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-gray-800);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
    list-style: none;
}

/* ---- 排版 ---- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1rem, 2vw, 1.25rem); }

p { margin-bottom: 1rem; }

.section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-secondary);
    margin-bottom: 0.75rem;
    position: relative;
}

.section-title {
    margin-bottom: 1rem;
    max-width: 600px;
}

.section-desc {
    color: var(--color-gray-600);
    font-size: 1.1rem;
    max-width: 540px;
    line-height: 1.7;
}

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

.text-center .section-title,
.text-center .section-desc {
    margin-left: auto;
    margin-right: auto;
}

/* ---- 容器 ---- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: left 0.6s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--color-gradient);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(0,180,216,0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,180,216,0.45);
    color: var(--color-white);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

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

.btn-outline-light:hover {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
}

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

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-sm {
    padding: 10px 22px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.05rem;
}

/* ============================================
   导航栏
   ============================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
    padding: 20px 0;
}

.site-header.scrolled {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0,0,0,0.08);
    padding: 12px 0;
}

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

.site-branding {
    flex-shrink: 0;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--color-white);
    transition: var(--transition);
}

.scrolled .site-logo {
    color: var(--color-dark);
}

.site-logo .logo-icon {
    display: flex;
    align-items: center;
}

.main-nav {
    display: flex;
    align-items: center;
}

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

.nav-list a {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    padding: 6px 0;
    position: relative;
    transition: var(--transition);
}

.scrolled .nav-list a {
    color: var(--color-gray-700);
}

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

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

.nav-list a:hover,
.nav-list a.active {
    color: var(--color-secondary);
}

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

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

.header-cta {
    display: none;
}

/* 语言切换按钮 */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-right: 4px;
}

.lang-btn {
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255,255,255,0.7);
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.scrolled .lang-btn {
    color: var(--color-gray-600);
}

.lang-btn.active {
    color: var(--color-white);
    background: rgba(255,255,255,0.15);
}

.scrolled .lang-btn.active {
    color: var(--color-primary);
    background: rgba(10,36,99,0.1);
}

.lang-btn:hover {
    color: var(--color-white);
}

.scrolled .lang-btn:hover {
    color: var(--color-primary);
}

.lang-divider {
    color: rgba(255,255,255,0.25);
    font-size: 0.75rem;
    font-weight: 300;
}

.scrolled .lang-divider {
    color: var(--color-gray-400);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: var(--transition);
}

.scrolled .hamburger span {
    background: var(--color-dark);
}

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

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

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

/* ============================================
   英雄区域
   ============================================ */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--color-dark);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 0% 50%, rgba(10,36,99,0.8), transparent),
        radial-gradient(ellipse 60% 50% at 100% 50%, rgba(0,180,216,0.3), transparent);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-secondary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 6s infinite;
}

.hero-particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.hero-particle:nth-child(2) { left: 25%; top: 60%; animation-delay: 1s; width: 3px; height: 3px; }
.hero-particle:nth-child(3) { left: 45%; top: 30%; animation-delay: 2s; width: 5px; height: 5px; }
.hero-particle:nth-child(4) { left: 65%; top: 70%; animation-delay: 0.5s; }
.hero-particle:nth-child(5) { left: 80%; top: 25%; animation-delay: 1.5s; width: 3px; height: 3px; }
.hero-particle:nth-child(6) { left: 90%; top: 55%; animation-delay: 2.5s; }
.hero-particle:nth-child(7) { left: 35%; top: 80%; animation-delay: 3s; width: 5px; height: 5px; }
.hero-particle:nth-child(8) { left: 55%; top: 15%; animation-delay: 3.5s; }

@keyframes particleFloat {
    0%, 100% { opacity: 0; transform: translateY(20px); }
    50% { opacity: 0.8; transform: translateY(0); }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 60px 0;
}

.hero-text {
    color: var(--color-white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,180,216,0.15);
    border: 1px solid rgba(0,180,216,0.3);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--color-secondary-light);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--color-secondary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: 1.2rem;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title .highlight {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 520px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 2.5rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-white);
}

.hero-stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
    margin-top: 2px;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease 0.3s both;
}

.hero-illustration {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    position: relative;
}

.hero-shape {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,180,216,0.15), transparent 70%);
    animation: floatShape 6s ease-in-out infinite;
}

.hero-shape:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    animation-delay: -2s;
    background: radial-gradient(circle, rgba(10,36,99,0.2), transparent 70%);
}

.hero-shape:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    animation-delay: -4s;
    background: radial-gradient(circle, rgba(0,180,216,0.2), transparent 70%);
}

.hero-code-display {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    background: rgba(13, 19, 33, 0.9);
    border: 1px solid rgba(0,180,216,0.2);
    border-radius: var(--radius-md);
    padding: 20px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-xl);
}

.hero-code-header {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.hero-code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.hero-code-dot:nth-child(1) { background: #FF5F56; }
.hero-code-dot:nth-child(2) { background: #FFBD2E; }
.hero-code-dot:nth-child(3) { background: #27C93F; }

.hero-code-line {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
    white-space: pre;
}

.hero-code-line .keyword { color: #FF79C6; }
.hero-code-line .function { color: #50FA7B; }
.hero-code-line .string { color: #F1FA8C; }
.hero-code-line .comment { color: #6272A4; }

@keyframes floatShape {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

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

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

/* ============================================
   通用章节
   ============================================ */

.section {
    padding: 100px 0;
}

.section-header {
    margin-bottom: 60px;
}

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

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

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

.section-bg-dark .section-desc {
    color: rgba(255,255,255,0.7);
}

/* ============================================
   业务板块卡片
   ============================================ */

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

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    transition: var(--transition);
    border: 1px solid var(--color-gray-200);
    position: relative;
    overflow: hidden;
    cursor: default;
}

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

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    background: var(--color-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--color-white);
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--color-gray-600);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.service-card .service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    margin-top: 1rem;
}

.service-card .service-link svg {
    transition: var(--transition);
}

.service-card .service-link:hover svg {
    transform: translateX(4px);
}

/* ============================================
   关于我们
   ============================================ */

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

.about-image {
    position: relative;
}

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

.about-image-wrapper img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--color-gradient);
    color: var(--color-white);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.about-image-badge span {
    font-size: 2rem;
    font-weight: 800;
    display: block;
    line-height: 1;
}

.about-image-badge small {
    font-size: 0.8rem;
    opacity: 0.9;
}

.about-features {
    display: grid;
    gap: 16px;
    margin-top: 1.5rem;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.about-feature-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    background: rgba(0,180,216,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    font-size: 0.8rem;
}

.about-feature-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.about-feature-text p {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ============================================
   统计数字
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px 20px;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.stat-item h4 {
    color: var(--color-gray-600);
    font-size: 0.95rem;
    font-weight: 500;
    margin-top: 8px;
}

/* ============================================
   工作流程
   ============================================ */

.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 40px 24px;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 50px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: var(--color-gray-300);
    background-image: linear-gradient(90deg, var(--color-gray-300), transparent);
}

.process-step:last-child::after {
    display: none;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(0,180,216,0.3);
}

.process-step h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.process-step p {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ============================================
   案例展示
   ============================================ */

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

.case-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

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

.case-image {
    height: 220px;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 24px;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0,180,216,0.1);
    color: var(--color-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    margin-bottom: 10px;
}

.case-content h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.case-content p {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

/* ============================================
   评价/客户见证
   ============================================ */

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

.testimonial-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 32px;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

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

.testimonial-stars {
    display: flex;
    gap: 3px;
    margin-bottom: 16px;
    color: #F59E0B;
    font-size: 0.9rem;
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--color-gray-700);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.testimonial-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}

.testimonial-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.testimonial-role {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

/* ============================================
   CTA 区域
   ============================================ */

.cta-section {
    background: var(--color-gradient);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.08), transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255,255,255,0.08), transparent 50%);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: var(--color-white);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255,255,255,0.85);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto 2rem;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============================================
   联系我们
   ============================================ */

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

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

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

.contact-item-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: rgba(0,180,216,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
}

.contact-item h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 0.9rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

.contact-form {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--color-white);
    color: var(--color-dark);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(0,180,216,0.15);
}

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

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

/* ============================================
   页脚
   ============================================ */

.site-footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.8);
}

.footer-wave svg {
    display: block;
    width: 100%;
    height: 60px;
}

.footer-wave path {
    fill: var(--color-dark);
}

.footer-main {
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-white);
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

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

.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 14px;
}

.footer-contact li svg {
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--color-secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 0;
}

/* ============================================
   移动端导航
   ============================================ */

@media (max-width: 991px) {
    .header-cta {
        display: inline-flex;
    }

    .hamburger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 320px;
        height: 100vh;
        background: var(--color-white);
        padding: 100px 30px 30px;
        box-shadow: -10px 0 40px rgba(0,0,0,0.1);
        transition: right 0.4s ease;
        z-index: 999;
    }

    .main-nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .nav-list a {
        color: var(--color-dark);
        padding: 14px 0;
        font-size: 1.05rem;
        display: block;
        width: 100%;
        border-bottom: 1px solid var(--color-gray-200);
    }

    .nav-list a::after {
        display: none;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

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

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

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

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

    .process-step::after {
        display: none;
    }

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

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

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

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

@media (max-width: 767px) {
    .header-cta {
        display: none !important;
    }

    .section {
        padding: 60px 0;
    }

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

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

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

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

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

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

    .contact-form {
        padding: 24px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

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

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

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

/* ---- 滚动动画 ---- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   登录页 / 通用页面
   ============================================ */

.page-hero {
    background: var(--color-dark);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 50% 100%, rgba(0,180,216,0.15), transparent);
}

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

.page-hero h1 {
    color: var(--color-white);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 0.75rem;
}

.page-hero p {
    color: rgba(255,255,255,0.7);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto;
}

.page-content {
    padding: 80px 0;
}

/* ---- 面包屑 ---- */
.breadcrumbs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 1rem;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.breadcrumbs a {
    color: rgba(255,255,255,0.7);
}

.breadcrumbs a:hover {
    color: var(--color-secondary);
}

/* ---- 文章内容样式 ---- */
.post-content h2,
.post-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.post-content p {
    margin-bottom: 1.2rem;
    line-height: 1.8;
    color: var(--color-gray-700);
}

.post-content ul,
.post-content ol {
    margin-bottom: 1.2rem;
    padding-left: 1.5rem;
}

.post-content ul {
    list-style: disc;
}

.post-content ol {
    list-style: decimal;
}

.post-content li {
    margin-bottom: 0.5rem;
    color: var(--color-gray-700);
}

.post-content blockquote {
    border-left: 4px solid var(--color-secondary);
    padding: 16px 24px;
    margin: 1.5rem 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.post-content blockquote p {
    margin-bottom: 0;
    font-style: italic;
}

/* ---- 博客布局 ---- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

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

.blog-card-image {
    height: 200px;
    background: var(--color-bg-alt);
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: 20px;
}

.blog-card-date {
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-bottom: 8px;
}

.blog-card-content h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.blog-card-content h3 a {
    color: var(--color-dark);
}

.blog-card-content h3 a:hover {
    color: var(--color-secondary);
}

.blog-card-content p {
    font-size: 0.85rem;
    color: var(--color-gray-600);
    margin-bottom: 0;
}

@media (max-width: 991px) {
    .blog-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 767px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}

/* ---- 加载动画 ---- */
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---- 回到顶部 ---- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--color-gradient);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

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

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

/* ---- 业务标签页 ---- */
.services-tab {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 22px;
    border: 1px solid var(--color-gray-300);
    background: var(--color-white);
    border-radius: 50px;
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-gray-700);
}

.tab-btn:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

.tab-btn.active {
    background: var(--color-gradient);
    border-color: transparent;
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(0,180,216,0.3);
}

.tab-panel {
    display: none;
    animation: fadeInUp 0.5s ease;
}

.tab-panel.active {
    display: block;
}

.tab-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.tab-text h3 {
    margin-bottom: 16px;
}

.tab-text p {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

.tab-text ul {
    display: grid;
    gap: 10px;
}

.tab-text ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--color-gray-700);
}

.tab-text ul li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-secondary);
    border-radius: 50%;
    flex-shrink: 0;
}

.tab-image {
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    overflow: hidden;
    height: 300px;
}

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

@media (max-width: 767px) {
    .tab-content {
        grid-template-columns: 1fr;
    }
    .tab-image {
        order: -1;
        height: 220px;
    }
}