/* ========================================
   Mitech风格 IT解决方案科技公司官网
   配色: 深蓝主色 + 青色辅助 + 暗夜底色
   ======================================== */

/* CSS 变量 */
:root {
    --color-primary: #2540e6;
    --color-primary-dark: #1a2fb8;
    --color-primary-light: #4d63f0;
    --color-accent: #00d0c0;
    --color-accent-dark: #00a89b;
    --color-dark: #0a0f2c;
    --color-dark-2: #131836;
    --color-dark-3: #1e2444;
    --color-body: #4a5170;
    --color-heading: #0a0f2c;
    --color-white: #ffffff;
    --color-off-white: #f6f7fb;
    --color-border: #e5e7ed;
    --color-gray: #9ca3af;
    --color-gray-light: #d1d5db;
    --gradient-primary: linear-gradient(135deg, #2540e6 0%, #4d63f0 100%);
    --gradient-accent: linear-gradient(135deg, #00d0c0 0%, #00a89b 100%);
    --gradient-dark: linear-gradient(160deg, #0a0f2c 0%, #131836 50%, #1e2444 100%);
    --gradient-hero: linear-gradient(125deg, #0a0f2c 0%, #1a1f4a 40%, #2540e6 100%);
    --shadow-sm: 0 2px 8px rgba(10, 15, 44, 0.06);
    --shadow-md: 0 8px 30px rgba(10, 15, 44, 0.08);
    --shadow-lg: 0 20px 60px rgba(10, 15, 44, 0.12);
    --shadow-primary: 0 12px 40px rgba(37, 64, 230, 0.3);
    --shadow-accent: 0 12px 40px rgba(0, 208, 192, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --container-max: 1200px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-body);
    background: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

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

.section-sm {
    padding: 60px 0;
}

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

.bg-dark {
    background: var(--gradient-dark);
    color: rgba(255, 255, 255, 0.85);
}

.bg-gradient-primary {
    background: var(--gradient-primary);
    color: #fff;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-heading);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4, .bg-dark h5, .bg-dark h6 {
    color: #fff;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.4rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.3rem; }

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

.text-accent {
    color: var(--color-accent);
}

/* Section header */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 60px;
}

.section-header .subtitle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-primary);
    background: rgba(37, 64, 230, 0.08);
    padding: 8px 20px;
    border-radius: 50px;
    margin-bottom: 20px;
}

.bg-dark .section-header .subtitle {
    color: var(--color-accent);
    background: rgba(0, 208, 192, 0.12);
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.05rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 48px rgba(37, 64, 230, 0.4);
    color: #fff;
}

.btn-accent {
    background: var(--gradient-accent);
    color: #fff;
    box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 48px rgba(0, 208, 192, 0.4);
    color: #fff;
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-3px);
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    background: transparent;
}

.btn-outline-light:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.btn-lg {
    padding: 18px 42px;
    font-size: 1rem;
}

/* ========================================
   导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--color-border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

/* 头部容器加宽，保证完整导航一行放下 */
.header .container {
    max-width: 1400px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-heading);
    /* 防止被导航挤压导致换行/裁切 */
    flex-shrink: 0;
    white-space: nowrap;
    min-width: 0;
}

.logo-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.3rem;
}

/* 企业名始终与 logo 图标保持一行，不被折成两行 */
.logo-text {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    line-height: 1.2;
}

.logo-text span {
    color: var(--color-primary);
}

/* Nav menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 12px 16px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-heading);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    /* 保证中文标题（四个字）始终一行显示，不被压缩折行 */
    white-space: nowrap;
}

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

.nav-link .arrow {
    font-size: 0.7rem;
    transition: var(--transition);
}

.nav-item:hover .nav-link .arrow {
    transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: var(--transition);
    z-index: 100;
}

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

.dropdown a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-body);
    transition: var(--transition);
}

.dropdown a:hover {
    background: var(--color-off-white);
    color: var(--color-primary);
    padding-left: 20px;
}

.dropdown a .dd-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: rgba(37, 64, 230, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

/* Header CTA */
.header-cta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--color-heading);
    font-size: 0.9rem;
}

.header-phone .phone-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(37, 64, 230, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

/* Mobile toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.mobile-toggle span {
    width: 26px;
    height: 3px;
    background: var(--color-heading);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: 80px;
}

/* Animated background orbs */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: floatOrb 8s ease-in-out infinite;
}

.hero::before {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #2540e6 0%, transparent 70%);
    top: -100px;
    right: -100px;
}

.hero::after {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #00d0c0 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -4s;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.1); }
}

/* Particle grid overlay */
.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: 50px 50px;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-content {
    color: #fff;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.9);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-content h1 {
    color: #fff;
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-content h1 .highlight {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
    line-height: 1.8;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat .num {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.hero-stat .label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 6px;
}

/* Hero visual */
.hero-visual {
    position: relative;
    height: 500px;
}

.hero-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 24px;
    color: #fff;
    box-shadow: var(--shadow-lg);
}

.hero-card-1 {
    top: 0;
    left: 0;
    width: 260px;
    animation: floatCard 5s ease-in-out infinite;
}

.hero-card-2 {
    top: 120px;
    right: 0;
    width: 220px;
    animation: floatCard 5s ease-in-out infinite;
    animation-delay: -2.5s;
}

.hero-card-3 {
    bottom: 0;
    left: 80px;
    width: 280px;
    animation: floatCard 5s ease-in-out infinite;
    animation-delay: -1.5s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-card .card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 14px;
}

.hero-card h5 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 6px;
}

.hero-card p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    margin: 0;
}

/* Scrolling brand strip */
.brand-strip {
    background: var(--color-dark);
    padding: 30px 0;
    overflow: hidden;
}

.brand-strip-inner {
    display: flex;
    gap: 60px;
    align-items: center;
    animation: scrollBrands 30s linear infinite;
    width: max-content;
}

@keyframes scrollBrands {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.brand-item {
    color: rgba(255, 255, 255, 0.4);
    font-size: 1.3rem;
    font-weight: 700;
    white-space: nowrap;
    transition: var(--transition);
}

.brand-item:hover {
    color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   服务卡片
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    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: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: rgba(37, 64, 230, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: #fff;
    transform: rotate(-5deg) scale(1.1);
}

.service-card h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-card .service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-primary);
}

.service-card .service-link:hover {
    gap: 14px;
}

.service-sub-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.service-sub-items .tag {
    font-size: 0.8rem;
    padding: 4px 12px;
    background: var(--color-off-white);
    border-radius: 50px;
    color: var(--color-body);
    font-weight: 500;
}

.service-card:hover .service-sub-items .tag {
    background: rgba(37, 64, 230, 0.06);
    color: var(--color-primary);
}

/* ========================================
   关于我们 / 特性区
   ======================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-img {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--gradient-dark);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.about-img .code-mockup {
    font-family: var(--font-mono);
    color: rgba(255, 255, 255, 0.15);
    font-size: 1rem;
    line-height: 1.6;
    padding: 30px;
}

.about-badge {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.about-badge .big-num {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.about-badge .text {
    font-size: 0.85rem;
    color: var(--color-body);
    margin-top: 6px;
}

.about-content .subtitle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.about-content h2 {
    margin-bottom: 20px;
}

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

.about-features {
    display: grid;
    gap: 16px;
    margin-bottom: 32px;
}

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

.about-feature .check {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0, 208, 192, 0.12);
    color: var(--color-accent-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.about-feature h5 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 0.9rem;
    margin: 0;
}

/* ========================================
   统计数字
   ======================================== */
.stats-section {
    background: var(--gradient-dark);
    padding: 80px 0;
}

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

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -15px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
}

.stat-item .stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 16px;
}

.stat-item .stat-num {
    font-size: 2.8rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.stat-item .stat-num .suffix {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item .stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 8px;
}

/* ========================================
   案例展示
   ======================================== */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-body);
    background: var(--color-off-white);
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

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

.case-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.case-img {
    aspect-ratio: 16/10;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-img .case-mockup {
    color: rgba(255, 255, 255, 0.08);
    font-size: 4rem;
}

.case-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.case-card:hover .case-img::after {
    opacity: 0.85;
}

.case-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    z-index: 2;
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-overlay .btn-view {
    padding: 12px 28px;
    border-radius: 50px;
    background: #fff;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.case-body {
    padding: 24px;
}

.case-body .case-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent-dark);
    margin-bottom: 10px;
}

.case-body h4 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.case-body p {
    font-size: 0.88rem;
    margin: 0;
}

/* ========================================
   工作流程
   ======================================== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-grid::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0.2;
}

.process-item {
    text-align: center;
    position: relative;
    z-index: 2;
}

.process-num {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
    transition: var(--transition);
    position: relative;
}

.process-item:hover .process-num {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    transform: scale(1.1);
    box-shadow: var(--shadow-primary);
}

.process-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.process-item p {
    font-size: 0.9rem;
}

/* ========================================
   新闻动态
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

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

.news-img {
    aspect-ratio: 16/9;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-img .news-icon {
    color: rgba(255, 255, 255, 0.08);
    font-size: 3rem;
}

.news-date {
    position: absolute;
    top: 16px;
    left: 16px;
    background: #fff;
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.news-date .day {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.news-date .month {
    font-size: 0.7rem;
    color: var(--color-body);
}

.news-body {
    padding: 24px;
}

.news-body .news-cat {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent-dark);
    margin-bottom: 10px;
}

.news-body h4 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    line-height: 1.4;
    transition: var(--transition);
}

.news-card:hover .news-body h4 {
    color: var(--color-primary);
}

.news-body p {
    font-size: 0.88rem;
    margin-bottom: 16px;
}

.news-body .news-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-body .news-link:hover {
    gap: 12px;
}

/* ========================================
   CTA 区域
   ======================================== */
.cta-section {
    position: relative;
    background: var(--gradient-primary);
    padding: 80px 0;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    color: #fff;
}

.cta-inner h2 {
    color: #fff;
    margin-bottom: 10px;
}

.cta-inner p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
}

/* ========================================
   联系表单
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info-list {
    display: grid;
    gap: 24px;
}

.contact-info-item {
    display: flex;
    gap: 18px;
    align-items: flex-start;
}

.contact-info-item .ci-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(37, 64, 230, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-info-item h5 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-info-item p {
    font-size: 0.9rem;
    margin: 0;
}

.contact-form {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--color-heading);
    background: var(--color-off-white);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(37, 64, 230, 0.08);
}

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

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

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.6);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    /* 品牌 + 五列导航(网站建设/安全运维/AI工具/SEO优化/网络推广) + 联系方式(最右) */
    /* 整块限宽 1100px 并在容器内水平居中；联系方式列比例较大以容纳地址/邮箱 */
    max-width: 1100px;
    margin: 0 auto 60px;
    grid-template-columns: 1.4fr 0.88fr 0.88fr 0.88fr 0.88fr 0.88fr 1.6fr;
    gap: 12px;
}

.footer-contact-col h5 {
    margin-bottom: 20px;
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.1rem;
}

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

.footer-col h5 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 18px;
    font-weight: 600;
}

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

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-col ul li a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

.footer-contact-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 16px;
    font-size: 0.88rem;
}

.footer-contact-item .icon {
    color: var(--color-accent);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a:hover {
    color: var(--color-accent);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

/* ========================================
   移动端底部导航
   ======================================== */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    z-index: 999;
    padding: 8px 0;
    padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
    box-shadow: 0 -4px 20px rgba(10, 15, 44, 0.08);
}

.mobile-bottom-nav-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.mb-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    color: var(--color-body);
    font-size: 0.7rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.mb-nav-item .icon {
    font-size: 1.3rem;
    line-height: 1;
    transition: var(--transition);
}

.mb-nav-item.active,
.mb-nav-item:hover {
    color: var(--color-primary);
}

.mb-nav-item.active .icon {
    transform: translateY(-2px) scale(1.1);
}

.mb-nav-item .badge-dot {
    position: absolute;
    top: 2px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* Page banner (subpages) */
.page-banner {
    background: var(--gradient-dark);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37,64,230,0.3) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0,208,192,0.2) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(60px);
}

.page-banner .breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.page-banner .breadcrumb a:hover {
    color: var(--color-accent);
}

.page-banner h1 {
    color: #fff;
    position: relative;
    z-index: 2;
}

.page-banner p {
    color: rgba(255, 255, 255, 0.65);
    max-width: 600px;
    margin: 16px auto 0;
    position: relative;
    z-index: 2;
}

/* Content layout for subpages */
.content-section {
    padding: 80px 0;
}

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

.content-main h2 {
    margin-bottom: 20px;
}

.content-main p {
    margin-bottom: 20px;
}

.content-main img {
    border-radius: var(--radius-md);
    margin: 24px 0;
}

.content-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-widget {
    background: var(--color-off-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 24px;
}

.sidebar-widget h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--color-border);
}

.sidebar-widget ul li {
    margin-bottom: 10px;
}

.sidebar-widget ul li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-body);
}

.sidebar-widget ul li a:hover,
.sidebar-widget ul li a.active {
    background: var(--gradient-primary);
    color: #fff;
}

.sidebar-cta {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    padding: 32px;
    color: #fff;
    text-align: center;
}

.sidebar-cta h4 {
    color: #fff;
    margin-bottom: 12px;
}

.sidebar-cta p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* FAQ */
.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-heading);
    transition: var(--transition);
}

.faq-header:hover {
    color: var(--color-primary);
}

.faq-header .faq-icon {
    font-size: 1.2rem;
    transition: var(--transition);
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
}

.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.open .faq-body {
    max-height: 300px;
}

.faq-body-inner {
    padding: 0 24px 24px;
    font-size: 0.92rem;
    color: var(--color-body);
}

/* Service detail cards */
.service-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.service-detail-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
    background: #fff;
}

.service-detail-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-detail-card .sdc-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.service-detail-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.service-detail-card p {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.service-detail-card ul {
    display: grid;
    gap: 8px;
}

.service-detail-card ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-body);
}

.service-detail-card ul li::before {
    content: '✓';
    color: var(--color-accent-dark);
    font-weight: 700;
}

/* Scroll animations */
.fade-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Scroll to top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: var(--shadow-primary);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 998;
}

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

.scroll-top:hover {
    transform: translateY(-4px);
}

/* WhatsApp/Contact floating button */
.float-contact {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: var(--shadow-accent);
    z-index: 998;
    transition: var(--transition);
}

.float-contact:hover {
    transform: scale(1.1);
}

/* ========================================
   响应式 - 平板
   ======================================== */
@media (max-width: 992px) {
    h1 { font-size: 2.4rem; }
    h2 { font-size: 2rem; }

    .section { padding: 70px 0; }

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

    .hero-content h1 { font-size: 2.6rem; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { display: none; }

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

    .about-badge {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: 20px;
        display: inline-block;
    }

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

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

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

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

    .process-grid::before { display: none; }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 20px;
    }

    .stat-item:nth-child(2)::after { display: none; }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .cta-inner {
        flex-direction: column;
        text-align: center;
    }

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

    .content-sidebar {
        position: static;
    }

    .service-detail-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   响应式 - 中宽桌面（≤1450px）：隐藏电话、压缩导航间距
   覆盖常见笔记本 1366/1440 宽度，避免导航标题折行
   ======================================== */
@media (min-width: 993px) and (max-width: 1450px) {
    .header-phone { display: none; }
    .header-cta { gap: 10px; }
    .nav-menu { gap: 2px; }
    .nav-link { padding: 12px 13px; font-size: 0.86rem; white-space: nowrap; }
}

/* 更窄的中宽桌面（≤1180px）：再隐藏右侧咨询按钮，进一步让位 */
@media (min-width: 993px) and (max-width: 1180px) {
    .header-cta { display: none; }
    .nav-link { padding: 12px 10px; font-size: 0.82rem; }
}

/* ========================================
   响应式 - 平板：导航转为抽屉菜单
   ======================================== */
@media (max-width: 992px) {
    .mobile-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        max-width: 85vw;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 100px 24px 40px;
        gap: 0;
        overflow-y: auto;
        transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

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

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link {
        padding: 16px 12px;
        justify-content: space-between;
        font-size: 1rem;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-item.expanded .dropdown { max-height: 600px; }

    .header-cta { display: none; }
    .header-inner { height: 70px; }

    .nav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s;
    }

    .nav-overlay.active {
        display: block;
        opacity: 1;
    }
}

/* ========================================
   响应式 - 手机
   ======================================== */
@media (max-width: 768px) {
    /* Show mobile toggle */
    .mobile-toggle {
        display: flex;
    }

    /* Hide desktop nav */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        max-width: 85vw;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 100px 24px 40px;
        gap: 0;
        overflow-y: auto;
        transition: right 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

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

    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link {
        padding: 16px 12px;
        justify-content: space-between;
        font-size: 1rem;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0 0 0 20px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav-item.expanded .dropdown {
        max-height: 500px;
    }

    .header-cta {
        display: none;
    }

    .header-inner {
        height: 70px;
    }

    /* Mobile overlay */
    .nav-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s;
    }

    .nav-overlay.active {
        display: block;
        opacity: 1;
    }

    /* Body padding for bottom nav */
    body {
        padding-bottom: 70px;
    }

    /* Show mobile bottom nav */
    .mobile-bottom-nav {
        display: block;
    }

    /* Adjust scroll top position */
    .scroll-top {
        bottom: 80px;
        right: 16px;
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }

    .float-contact {
        bottom: 80px;
        left: 16px;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    /* Typography */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }
    h3 { font-size: 1.35rem; }

    .hero { min-height: auto; padding: 100px 0 60px; }
    .hero-content h1 { font-size: 2rem; }
    .hero-content p { font-size: 1rem; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 1.6rem; }

    .section { padding: 60px 0; }
    .section-header { margin-bottom: 40px; }

    .services-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr; gap: 40px; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 30px 20px; }
    .stat-item::after { display: none !important; }
    .stat-item .stat-num { font-size: 2rem; }

    .cases-filter { gap: 8px; }
    .filter-btn { padding: 8px 16px; font-size: 0.82rem; }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        margin-bottom: 40px;
    }

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

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .contact-form { padding: 24px; }

    .cta-inner { padding: 0; }
    .cta-inner .btn { width: 100%; justify-content: center; }

    .page-banner { padding: 110px 0 50px; }
    .page-banner h1 { font-size: 1.8rem; }

    .service-card,
    .service-detail-card { padding: 28px 20px; }

    .btn { padding: 12px 24px; font-size: 0.88rem; }
    .btn-lg { padding: 14px 32px; }

    .about-features { grid-template-columns: 1fr; }

    .hero-badge { font-size: 0.75rem; padding: 6px 14px; }
}

/* Extra small phones */
@media (max-width: 380px) {
    .container { padding: 0 16px; }
    .hero-content h1 { font-size: 1.7rem; }
    .hero-stat .num { font-size: 1.4rem; }
    .stats-grid { grid-template-columns: 1fr; }
    .mb-nav-item { font-size: 0.65rem; }
    .mb-nav-item .icon { font-size: 1.1rem; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   法律条款页 / 网站地图 通用排版
   ======================================== */
.legal-wrap {
    max-width: 980px;
    margin: 0 auto;
}

.legal-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    box-shadow: var(--shadow-sm);
}

.legal-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
    padding: 16px 20px;
    margin-bottom: 32px;
    background: var(--color-off-white);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    color: var(--color-body);
}

.legal-meta strong { color: var(--color-heading); }

.legal-item {
    padding: 26px 0;
    border-bottom: 1px solid var(--color-border);
    scroll-margin-top: 120px;
}

.legal-item:last-child { border-bottom: 0; }

.legal-item h2 {
    font-size: 1.35rem;
    margin-bottom: 14px;
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.legal-item h2 .sec-no {
    color: var(--color-primary);
    font-weight: 800;
    flex-shrink: 0;
}

.legal-item h3 {
    font-size: 1.05rem;
    margin: 18px 0 8px;
    color: var(--color-heading);
}

.legal-item p { margin: 10px 0; line-height: 1.9; color: var(--color-body); }

.legal-item ul, .legal-item ol { margin: 10px 0 10px 4px; padding-left: 20px; }
.legal-item li { margin: 7px 0; line-height: 1.85; color: var(--color-body); }

.legal-note {
    background: rgba(37, 64, 230, 0.05);
    border: 1px solid rgba(37, 64, 230, 0.18);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin: 16px 0;
    font-size: 0.92rem;
    color: var(--color-heading);
}

.legal-note.warn {
    background: rgba(255, 152, 0, 0.07);
    border-color: rgba(255, 152, 0, 0.3);
}

.legal-contact {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-top: 14px;
}

.legal-contact .lc-item {
    background: var(--color-off-white);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
}

.legal-contact .lc-item .lc-label { font-size: 0.82rem; color: var(--color-muted, #667); }
.legal-contact .lc-item .lc-value { font-weight: 600; color: var(--color-heading); margin-top: 2px; }

/* 条款页目录 */
.legal-toc {
    columns: 2;
    column-gap: 40px;
    margin: 6px 0 10px;
}
.legal-toc a {
    display: block;
    padding: 6px 0;
    color: var(--color-body);
    text-decoration: none;
    break-inside: avoid;
    font-size: 0.95rem;
    border-bottom: 1px dashed var(--color-border);
}
.legal-toc a:hover { color: var(--color-primary); }

/* 网站地图 */
.sitemap-page .sm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 22px;
}
.sitemap-page .sm-col {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 22px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.sitemap-page .sm-col:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.sitemap-page .sm-col h2 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-heading);
}
.sitemap-page .sm-col h2 .sm-ico { width: 34px; height: 34px; border-radius: 10px; background: rgba(37,64,230,.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.sitemap-page .sm-col > a { font-weight: 600; color: var(--color-primary); }
.sitemap-page .sm-col ul { list-style: none; padding: 8px 0 0; margin: 0; }
.sitemap-page .sm-col ul li { border-top: 1px dashed var(--color-border); }
.sitemap-page .sm-col ul li a { display: block; padding: 8px 2px; color: var(--color-body); font-size: 0.93rem; transition: var(--transition); }
.sitemap-page .sm-col ul li a:hover { color: var(--color-primary); padding-left: 8px; }
.sitemap-page .sm-home {
    text-align: center;
    margin-bottom: 30px;
}
.sitemap-page .sm-home a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient-primary);
    color: #fff;
    padding: 12px 34px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-primary);
    transition: var(--transition);
}
.sitemap-page .sm-home a:hover { transform: translateY(-3px); }

@media (max-width: 768px) {
    .legal-card { padding: 26px 22px; }
    .legal-item h2 { font-size: 1.15rem; }
    .legal-toc { columns: 1; }
}