/* ============================================
   华奥科技 - Hua'ao Technology 主样式 (v2.0)
   全面升级版 - 更大气、更现代
   ============================================ */

/* ========== CSS 变量 ========== */
:root {
    /* 主色 */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --secondary: #0f172a;
    --secondary-800: #1e293b;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #2563eb, #06b6d4);
    --gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4, #8b5cf6);
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-card: linear-gradient(135deg, rgba(37,99,235,.04), rgba(6,182,212,.04));
    
    /* 中性色 */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* 语义色 */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow: 0 4px 20px rgba(0,0,0,.06), 0 1px 3px rgba(0,0,0,.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.04);
    --shadow-xl: 0 20px 60px rgba(0,0,0,.1);
    --shadow-glow: 0 4px 30px rgba(37,99,235,.25);
    
    /* 过渡 */
    --transition: all .35s cubic-bezier(.4,0,.2,1);
    --transition-slow: all .6s cubic-bezier(.4,0,.2,1);
    --bounce: cubic-bezier(.34,1.56,.64,1);
    
    /* 字体 */
    --font: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
    --font-mono: 'SF Mono','Fira Code','Consolas',monospace;
    
    /* 布局 */
    --max-width: 1200px;
}

/* ========== 重置基础 ========== */
*,*::before,*::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    color: var(--gray-800);
    line-height: 1.7;
    background: #fff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 按钮系统 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    letter-spacing: .3px;
}
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.15);
    transform: translateX(-100%);
    transition: transform .4s ease;
}
.btn:hover::after { transform: translateX(100%); }
.btn:active { transform: scale(.96); }

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(37,99,235,.3);
}
.btn-primary:hover {
    box-shadow: 0 8px 30px rgba(37,99,235,.4);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37,99,235,.3);
}

.btn-outline-light {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,.4);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,.12);
    border-color: #fff;
    transform: translateY(-3px);
}

.btn-ghost {
    background: rgba(37,99,235,.08);
    color: var(--primary);
    border: none;
}
.btn-ghost:hover {
    background: rgba(37,99,235,.15);
    transform: translateY(-2px);
}

.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-lg { padding: 18px 40px; font-size: 17px; border-radius: var(--radius); }
.btn-block { width: 100%; justify-content: center; }

.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-300); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }

/* ========== 头部导航 (升级版) ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.88);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(226,232,240,.5);
    transition: var(--transition);
}
.header.scrolled {
    background: rgba(255,255,255,.95);
    box-shadow: 0 4px 30px rgba(0,0,0,.06);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary);
}
.logo-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    font-size: 22px;
    color: #fff;
    box-shadow: 0 4px 12px rgba(37,99,235,.25);
}
.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2px;
}
.nav-list li a {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
    position: relative;
}
.nav-list li a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-list li a:hover::after,
.nav-list li a.active::after { width: 20px; }
.nav-list li a:hover,
.nav-list li a.active {
    color: var(--primary);
    background: rgba(37,99,235,.06);
}

.header-actions { display: flex; align-items: center; gap: 10px; }

/* 用户下拉菜单 */
.user-dropdown { position: relative; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: var(--transition);
    overflow: hidden;
    border: 1px solid var(--gray-100);
}
.user-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    color: var(--gray-700);
    font-size: 14px;
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
}
.dropdown-menu a:hover { background: var(--primary-50); color: var(--primary); }
.dropdown-menu a:last-child { border-bottom: none; }

/* 移动端按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-left: 8px;
}
.mobile-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--gray-700);
    border-radius: 3px;
    transition: var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,6px); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-6px); }

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(20px);
    padding: 30px;
    transform: translateY(-110%);
    opacity: 0;
    transition: var(--transition);
    z-index: 999;
}
.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
}
.mobile-menu ul li a {
    display: block;
    padding: 16px 20px;
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
}
.mobile-menu ul li a:hover {
    background: var(--primary-50);
    color: var(--primary);
    padding-left: 28px;
}

/* ========== Hero 区域 (豪华升级版) ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 130px 0 80px;
    background: var(--gradient-dark);
    overflow: hidden;
}

/* 动态粒子背景 */
.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}
.hero-bg::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,.2) 0%, transparent 70%);
    top: -100px;
    left: -100px;
    animation: floatOrb 8s ease-in-out infinite;
}
.hero-bg::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(6,182,212,.15) 0%, transparent 70%);
    bottom: -80px;
    right: -80px;
    animation: floatOrb 10s ease-in-out infinite reverse;
}

@keyframes floatOrb {
    0%,100% { transform: translate(0,0) scale(1); }
    33% { transform: translate(40px,-40px) scale(1.1); }
    66% { transform: translate(-20px,30px) scale(.95); }
}

/* 网格线装饰 */
.hero-bg .grid-lines {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* 浮动粒子 - JS 生成 */

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 40px 0;
}
.hero-title {
    font-size: clamp(40px,6vw,72px);
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}
.hero-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: clamp(17px,2vw,22px);
    color: rgba(255,255,255,.65);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.8;
    font-weight: 400;
}
.hero-actions {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-actions .btn {
    animation: heroPulse 3s ease-in-out infinite;
}
@keyframes heroPulse {
    0%,100% { box-shadow: 0 4px 15px rgba(37,99,235,.3); }
    50% { box-shadow: 0 4px 30px rgba(37,99,235,.5), 0 0 60px rgba(37,99,235,.15); }
}

/* 统计数字 (豪华版) */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 30px;
    margin-top: 70px;
    padding: 45px 40px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}
.hero-stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37,99,235,.08), transparent);
    pointer-events: none;
}
.stat-item {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}
.stat-number {
    font-size: clamp(36px,4vw,52px);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline;
}
.stat-plus {
    font-size: 30px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,.55);
    margin-top: 8px;
    letter-spacing: .5px;
}

/* ========== 通用 Section ========== */
.section { padding: 110px 0; }
.bg-gray { background: var(--gray-50); }
.bg-primary-light { background: var(--primary-50); }
.bg-dark { background: var(--secondary); color: #fff; }

/* SVG 分隔器 */
.section-divider {
    position: relative;
    height: 80px;
    margin-top: -1px;
}
.section-divider svg {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 80px;
}

.section-header {
    text-align: center;
    margin-bottom: 65px;
    position: relative;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 22px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(37,99,235,.08);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 1px solid rgba(37,99,235,.1);
}
.section-tag i { font-size: 14px; }
.section-title {
    font-size: clamp(28px,3.2vw,40px);
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 18px;
    line-height: 1.25;
    letter-spacing: -.5px;
}
.bg-dark .section-title { color: #fff; }
.section-desc {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.8;
}
.bg-dark .section-desc { color: rgba(255,255,255,.6); }
.section-header .deco-line {
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
    margin: 16px auto 0;
}
.section-footer { text-align: center; margin-top: 55px; }

/* ========== 关于我们 (升级版) ========== */
.about-section { position: relative; }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}
.about-image { position: relative; }
.about-img-placeholder {
    width: 100%;
    height: 450px;
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 90px;
    color: rgba(255,255,255,.2);
    position: relative;
    overflow: hidden;
}
.about-img-placeholder::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 30px,
        rgba(255,255,255,.03) 30px,
        rgba(255,255,255,.03) 31px
    );
    animation: slideBg 20s linear infinite;
}
@keyframes slideBg {
    to { transform: translate(-50%,-50%); }
}
.about-image::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid rgba(37,99,235,.15);
    border-radius: var(--radius-xl);
    top: -16px;
    left: 16px;
    z-index: -1;
}

.about-text h3 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 18px;
    color: var(--secondary);
    line-height: 1.3;
}
.about-text p {
    color: var(--gray-600);
    margin-bottom: 18px;
    font-size: 16px;
    line-height: 1.9;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 28px 0;
}
.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--gray-700);
    padding: 8px 0;
}
.about-feature i {
    color: var(--success);
    font-size: 18px;
    width: 22px;
}

/* ========== 服务卡片 (豪华版) ========== */
.services-section { position: relative; }
.services-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 28px;
}
.service-card {
    background: #fff;
    padding: 38px 28px 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}
.service-card:hover::before { transform: scaleX(1); }
.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}
.service-icon {
    width: 76px;
    height: 76px;
    border-radius: var(--radius);
    background: var(--gradient-card);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 22px;
    font-size: 34px;
    color: var(--primary);
    transition: var(--transition);
    position: relative;
}
.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: #fff;
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 25px rgba(37,99,235,.3);
}
.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}
.service-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.75;
    margin-bottom: 18px;
}
.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.service-link i { transition: var(--transition); }
.service-link:hover i { transform: translateX(6px); }

/* ========== 服务详情页 ========== */
.services-detail-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.service-detail-card {
    background: #fff;
    padding: 40px 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.service-detail-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: transparent;
}
.sd-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 16px;
}
.sd-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(37,99,235,.25);
}
.sd-header h3 { font-size: 20px; font-weight: 700; color: var(--secondary); }
.sd-subtitle { font-size: 15px; color: var(--primary); font-weight: 600; margin-bottom: 12px; }
.sd-desc {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.85;
    margin-bottom: 18px;
}
.sd-features h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 10px;
}
.sd-features ul li {
    font-size: 14px;
    color: var(--gray-600);
    padding: 5px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sd-features ul li i { color: var(--success); }

/* ========== 为什么选择我们 (升级版) ========== */
.why-section { position: relative; }
.why-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 28px;
}
.why-card {
    padding: 40px 30px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}
.why-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(37,99,235,.04) 0%, transparent 70%);
    pointer-events: none;
}
.why-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}
.why-number {
    font-size: 48px;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
    line-height: 1;
}
.why-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}
.why-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.75;
}

/* ========== 案例展示 (豪华版) ========== */
.cases-section { position: relative; }
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 28px;
}
.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}
.case-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}
.case-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 52px;
    color: var(--primary);
    opacity: .6;
    transition: var(--transition-slow);
}
.case-card:hover .case-placeholder { transform: scale(1.1); }
.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,23,42,.85), rgba(37,99,235,.7));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}
.case-card:hover .case-overlay { opacity: 1; }
.case-link-btn {
    padding: 12px 28px;
    background: #fff;
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    transform: translateY(20px);
}
.case-card:hover .case-link-btn { transform: translateY(0); }
.case-link-btn:hover { background: var(--primary); color: #fff; }
.case-info { padding: 24px; }
.case-category {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(37,99,235,.08);
    margin-bottom: 10px;
    letter-spacing: .5px;
}
.case-info h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--secondary);
    line-height: 1.4;
}
.case-info p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.65;
}

/* 分类过滤 */
.case-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 45px;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 10px 26px;
    border-radius: var(--radius-full);
    border: 1px solid var(--gray-200);
    background: #fff;
    color: var(--gray-600);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.filter-btn.active {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(37,99,235,.3);
}

/* ========== 合作流程 (升级版) ========== */
.process-section {
    position: relative;
    background: linear-gradient(180deg, #fff 0%, var(--gray-50) 100%);
}
.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    position: relative;
}
.process-step {
    text-align: center;
    padding: 35px 30px;
    flex: 1;
    position: relative;
    transition: var(--transition);
}
.process-step:hover { transform: translateY(-8px); }
.step-number {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 700;
    font-size: 17px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    position: relative;
    z-index: 2;
    box-shadow: 0 4px 15px rgba(37,99,235,.3);
}
.step-icon {
    font-size: 44px;
    color: var(--primary);
    margin-bottom: 18px;
    transition: var(--transition);
}
.process-step:hover .step-icon { transform: scale(1.15); }
.process-step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--secondary);
}
.process-step p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}
.step-line {
    flex: 0 0 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
    margin-top: 56px;
    position: relative;
    opacity: .4;
}

/* ========== CTA 区域 (豪华版) ========== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--secondary) 0%, #1e3a5f 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(37,99,235,.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(6,182,212,.1) 0%, transparent 50%);
}
.cta-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}
.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}
.cta-content h2 {
    font-size: clamp(26px,3.2vw,40px);
    font-weight: 800;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: -.5px;
}
.cta-content p {
    font-size: 18px;
    color: rgba(255,255,255,.65);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.cta-actions {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== 页面横幅 ========== */
.page-banner {
    padding: 140px 0 70px;
    background: var(--gradient-dark);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 50%, rgba(37,99,235,.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(6,182,212,.1) 0%, transparent 50%);
}
.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}
.page-banner h1 {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    position: relative;
    letter-spacing: -.5px;
}
.page-banner-sm { padding: 120px 0 50px; }
.page-banner-sm h1 { font-size: 32px; }
.breadcrumb {
    font-size: 14px;
    color: rgba(255,255,255,.55);
    position: relative;
}
.breadcrumb a { color: rgba(255,255,255,.8); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { margin: 0 8px; color: rgba(255,255,255,.3); }

/* ========== 关于页面 ========== */
.about-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}
.about-detail-text h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 22px;
    color: var(--secondary);
    line-height: 1.3;
}
.about-detail-text p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.85;
    margin-bottom: 18px;
}
.text-primary { color: var(--primary); }
.about-stats-row {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 20px;
    margin-top: 36px;
}
.stat-box {
    text-align: center;
    padding: 24px 16px;
    border-radius: var(--radius);
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}
.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.stat-num {
    display: block;
    font-size: 30px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-lbl { font-size: 13px; color: var(--gray-500); margin-top: 6px; }
.about-img-box {
    width: 100%;
    height: 450px;
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 110px;
    color: rgba(255,255,255,.15);
    position: relative;
    overflow: hidden;
}

/* 价值观 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 28px;
}
.value-card {
    text-align: center;
    padding: 45px 28px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.value-card i {
    font-size: 48px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 18px;
}
.value-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.value-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* 时间线 (升级版) */
.timeline {
    position: relative;
    max-width: 750px;
    margin: 0 auto;
    padding: 30px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--accent), var(--primary));
    border-radius: 3px;
}
.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 50px;
    position: relative;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item:nth-child(odd) { flex-direction: row; }
.timeline-item:nth-child(even) { flex-direction: row-reverse; }
.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: 4px solid #fff;
    box-shadow: 0 0 0 5px rgba(37,99,235,.2), 0 4px 15px rgba(37,99,235,.3);
    z-index: 2;
}
.timeline-date {
    width: 50%;
    text-align: right;
    padding-right: 40px;
    font-size: 22px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.timeline-item:nth-child(even) .timeline-date {
    text-align: left;
    padding-left: 40px;
    padding-right: 0;
}
.timeline-content {
    width: 50%;
    padding-left: 40px;
}
.timeline-item:nth-child(even) .timeline-content {
    padding-right: 40px;
    padding-left: 0;
}
.timeline-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 6px;
}
.timeline-content p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
}

/* 团队 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 28px;
}
.team-card {
    text-align: center;
    padding: 45px 24px 35px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.team-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 40px;
    color: #fff;
    box-shadow: 0 4px 15px rgba(37,99,235,.25);
}
.team-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.team-role {
    display: block;
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 10px;
}
.team-card p { font-size: 14px; color: var(--gray-500); line-height: 1.7; }

/* ========== 新闻列表 ========== */
.news-list { max-width: 820px; margin: 0 auto; }
.news-item {
    display: flex;
    gap: 28px;
    padding: 32px;
    margin-bottom: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.news-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}
.news-date {
    text-align: center;
    min-width: 80px;
    flex-shrink: 0;
    padding-top: 4px;
}
.news-day {
    display: block;
    font-size: 36px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}
.news-month { font-size: 13px; color: var(--gray-400); text-transform: uppercase; letter-spacing: 1px; }
.news-content { flex: 1; }
.news-meta {
    display: flex;
    gap: 18px;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--gray-400);
}
.news-category {
    color: var(--primary);
    font-weight: 600;
}
.news-views i { margin-right: 4px; }
.news-content h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.news-content h3 a { color: var(--secondary); transition: var(--transition); }
.news-content h3 a:hover { color: var(--primary); }
.news-content p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.75;
    margin-bottom: 14px;
}
.read-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.read-more i { transition: var(--transition); }
.read-more:hover i { transform: translateX(6px); }

/* 文章详情 */
.article-wrap { max-width: 820px; margin: 0 auto; }
.article-detail .article-header {
    margin-bottom: 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}
.article-meta {
    display: flex;
    gap: 18px;
    margin-bottom: 14px;
    font-size: 14px;
    color: var(--gray-400);
    flex-wrap: wrap;
}
.article-category {
    color: var(--primary);
    font-weight: 600;
}
.article-detail h1 {
    font-size: 30px;
    font-weight: 800;
    color: var(--secondary);
    line-height: 1.3;
}
.article-body {
    line-height: 2;
    color: var(--gray-700);
    font-size: 16px;
}
.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 36px 0 18px;
    color: var(--secondary);
}
.article-body h3 {
    font-size: 19px;
    font-weight: 700;
    margin: 28px 0 14px;
}
.article-body p { margin-bottom: 18px; }
.article-body img {
    border-radius: var(--radius);
    margin: 24px 0;
    box-shadow: var(--shadow);
}
.article-footer {
    margin-top: 50px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

/* ========== 联系我们 (升级版) ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}
.contact-info-side h2 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--secondary);
}
.contact-info-side > p {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 40px;
    line-height: 1.8;
}
.contact-info-item {
    display: flex;
    gap: 18px;
    margin-bottom: 28px;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}
.contact-info-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow);
}
.ci-icon {
    width: 54px;
    height: 54px;
    border-radius: var(--radius);
    flex-shrink: 0;
    background: var(--gradient-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 12px rgba(37,99,235,.2);
}
.ci-text h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 4px;
}
.ci-text p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}
.contact-qr { margin-top: 30px; }
.contact-qr h4 { font-size: 15px; font-weight: 700; margin-bottom: 14px; }
.qr-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius);
    border: 2px solid var(--gray-200);
    overflow: hidden;
    background: #fff;
    transition: var(--transition);
    box-shadow: var(--shadow);
}
.qr-image:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.qr-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.qr-tip {
    margin-top: 10px;
    font-size: 14px;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 6px;
}
.qr-tip i { color: #07C160; font-size: 18px; }

/* 备用占位（未上传二维码时显示） */
.qr-placeholder {
    width: 200px;
    height: 200px;
    border-radius: var(--radius);
    border: 2px dashed var(--gray-300);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--gray-400);
    font-size: 14px;
    transition: var(--transition);
    background: var(--gray-50);
}
.qr-placeholder:hover {
    border-color: var(--primary);
    background: var(--primary-50);
}
.qr-placeholder i { font-size: 52px; }

/* 联系表单 */
.contact-form-side {
    background: #fff;
    padding: 45px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
}
.contact-form-side h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 28px;
    color: var(--secondary);
}

/* ========== 表单 ========== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}
.required { color: var(--danger); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: #fff;
    color: var(--gray-800);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.input-disabled {
    background: var(--gray-100) !important;
    color: var(--gray-400) !important;
    cursor: not-allowed;
}

.form-error {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
    margin-bottom: 18px;
    font-size: 14px;
}
.form-success {
    text-align: center;
    padding: 50px 20px;
}
.form-success i {
    font-size: 64px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 18px;
}
.form-success h3 { font-size: 24px; margin-bottom: 10px; color: var(--secondary); }
.form-success p { color: var(--gray-500); margin-bottom: 24px; }

/* Alert */
.alert {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert i { font-size: 18px; }
.alert-error { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #059669; border: 1px solid #bbf7d0; }

/* ========== Auth 认证 ========== */
.auth-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 85vh;
    padding: 130px 0 70px;
    background: linear-gradient(180deg, var(--gray-50) 0%, #fff 100%);
}
.auth-box {
    width: 100%;
    max-width: 440px;
    margin: 0 auto;
    background: #fff;
    padding: 45px 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}
.auth-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}
.auth-header {
    text-align: center;
    margin-bottom: 32px;
}
.auth-header i {
    font-size: 60px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 14px;
}
.auth-header h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--secondary);
    margin-bottom: 8px;
}
.auth-header p { color: var(--gray-500); font-size: 14px; }
.auth-links {
    display: flex;
    justify-content: space-between;
    margin-top: 18px;
    font-size: 14px;
}
.auth-links a { color: var(--primary); }
.auth-links a:hover { text-decoration: underline; }

/* ========== 百度地图 ========== */
.map-section { padding: 0 0 70px; }
.map-wrap {
    width: 100%;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}
.map-container {
    width: 100%;
    height: 400px;
    background: var(--gray-100);
}
.map-container .map-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    gap: 10px;
}
.map-container .map-placeholder i { font-size: 52px; }
.map-container .map-placeholder p { font-size: 16px; }
.map-container .map-placeholder small { font-size: 13px; color: var(--gray-500); }
.map-container .map-placeholder small a { color: var(--primary); text-decoration: underline; }
.map-address-bar {
    margin-top: 16px;
    padding: 14px 20px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    box-shadow: var(--shadow);
}
.map-address-bar i { font-size: 18px; }

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 50px;
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    transition: var(--transition);
}
.pagination a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-50);
}
.pagination .current {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(37,99,235,.25);
}

/* ========== 会员中心 ========== */
.member-dashboard {
    display: grid;
    grid-template-columns: 270px 1fr;
    gap: 30px;
}
.member-sidebar {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 35px 25px;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
    text-align: center;
    position: sticky;
    top: 100px;
}
.member-avatar i {
    font-size: 80px;
    color: var(--gray-300);
}
.member-sidebar h3 {
    font-size: 18px;
    font-weight: 700;
    margin-top: 10px;
    color: var(--secondary);
}
.member-email { font-size: 13px; color: var(--gray-400); }
.member-nav { margin-top: 20px; text-align: left; }
.member-nav li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-600);
    transition: var(--transition);
}
.member-nav li a:hover,
.member-nav li a.active {
    background: rgba(37,99,235,.06);
    color: var(--primary);
}
.member-content {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 35px;
    border: 1px solid var(--gray-100);
    box-shadow: var(--shadow-sm);
}
.member-welcome { margin-bottom: 28px; }
.member-welcome h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary);
}
.member-welcome p { color: var(--gray-500); }
.member-stats {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 18px;
}
.member-stat-card {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 24px 20px;
    border-radius: var(--radius);
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}
.member-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}
.member-stat-card i {
    font-size: 32px;
    color: var(--primary);
}
.ms-label {
    display: block;
    font-size: 12px;
    color: var(--gray-400);
}
.ms-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-700);
}

/* ========== 页脚 (豪华版) ========== */
.footer {
    background: var(--secondary);
    color: rgba(255,255,255,.65);
    padding: 80px 0 0;
    position: relative;
}
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 50px;
    margin-bottom: 50px;
}
.footer-logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-logo i {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.9;
    max-width: 320px;
}
.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}
.footer-social a {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255,255,255,.06);
    color: rgba(255,255,255,.55);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,.06);
}
.footer-social a:hover {
    background: var(--gradient-primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(37,99,235,.3);
}
.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,.55);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col ul li a:hover {
    color: #fff;
    padding-left: 6px;
}
.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    line-height: 1.6;
}
.contact-info li i {
    width: 18px;
    color: var(--primary-light);
    margin-top: 3px;
}
.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255,255,255,.06);
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}
.footer-bottom a {
    color: rgba(255,255,255,.5);
    transition: var(--transition);
}
.footer-bottom a:hover { color: #fff; }

/* 回到顶部 */
.scroll-top {
    position: fixed;
    bottom: 35px;
    right: 35px;
    z-index: 99;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
}
.scroll-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.scroll-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 70px 20px;
    color: var(--gray-400);
}
.empty-state i { font-size: 72px; margin-bottom: 18px; opacity: .5; }
.empty-state p { font-size: 16px; }

/* ========== 动画系统 ========== */
.animate-fadeInUp {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp .7s cubic-bezier(.4,0,.2,1) forwards;
}
.delay-1 { animation-delay: .15s; }
.delay-2 { animation-delay: .3s; }
.delay-3 { animation-delay: .5s; }
.delay-4 { animation-delay: .7s; }

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

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(.95); }
    to { opacity: 1; transform: scale(1); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all .7s cubic-bezier(.4,0,.2,1);
}
.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ========== 滚动进度条 ========== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 1001;
    width: 0;
    transition: width .1s linear;
}

/* ========== 响应式 ========== */
@media (max-width: 1200px) {
    .container { padding: 0 20px; }
}

@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2,1fr); }
    .why-grid { grid-template-columns: repeat(2,1fr); }
    .cases-grid { grid-template-columns: repeat(2,1fr); }
    .footer-grid { grid-template-columns: repeat(2,1fr); }
    .services-detail-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: repeat(2,1fr); }
    .team-grid { grid-template-columns: repeat(2,1fr); }
    .about-stats-row { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
    .nav-list { display: none; }
    .mobile-toggle { display: flex; }
    .mobile-menu { display: block; }
    .header .container { height: 64px; }
    .mobile-menu { top: 64px; }
    
    .hero { min-height: auto; padding: 100px 0 60px; }
    .hero-stats { grid-template-columns: repeat(2,1fr); gap: 24px; padding: 28px 20px; margin-top: 50px; }
    .hero-actions { flex-direction: column; align-items: center; }
    
    .section { padding: 70px 0; }
    .section-header { margin-bottom: 45px; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-features { grid-template-columns: 1fr; }
    .about-image::after { display: none; }
    
    .services-grid { grid-template-columns: 1fr; gap: 20px; }
    .why-grid { grid-template-columns: 1fr; gap: 20px; }
    .cases-grid { grid-template-columns: 1fr; gap: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 35px; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .form-row { grid-template-columns: 1fr; }
    .about-detail-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-stats-row { grid-template-columns: repeat(2,1fr); }
    .values-grid { grid-template-columns: 1fr; gap: 20px; }
    .team-grid { grid-template-columns: repeat(2,1fr); gap: 20px; }
    .member-dashboard { grid-template-columns: 1fr; }
    .member-stats { grid-template-columns: 1fr; }
    
    .process-steps { flex-direction: column; align-items: center; }
    .step-line { display: none; }
    .process-step { max-width: 300px; }
    
    .timeline::before { left: 24px; }
    .timeline-item,
    .timeline-item:nth-child(even) { flex-direction: row !important; }
    .timeline-dot { left: 24px; }
    .timeline-date {
        width: auto;
        text-align: left;
        padding-left: 55px !important;
        padding-right: 0 !important;
        font-size: 18px;
    }
    .timeline-content {
        width: 100%;
        padding-left: 55px !important;
        padding-right: 0 !important;
    }
    
    .news-item { flex-direction: column; gap: 16px; padding: 24px; }
    .news-date { display: flex; gap: 10px; align-items: center; text-align: left; }
    
    .page-banner { padding: 110px 0 50px; }
    .page-banner h1 { font-size: 28px; }
    .cta-section { padding: 60px 0; }
    .contact-form-side { padding: 28px; }
    .contact-info-item { padding: 16px; }
    .auth-box { padding: 32px 24px; }
    
    .stat-cards { grid-template-columns: repeat(2,1fr); }
    .scroll-top { bottom: 20px; right: 20px; width: 44px; height: 44px; }
}

@media (max-width: 480px) {
    .hero-stats { grid-template-columns: repeat(2,1fr); gap: 18px; padding: 20px 16px; }
    .about-stats-row { grid-template-columns: 1fr; }
    .header .container { height: 56px; }
    .mobile-menu { top: 56px; }
    .page-banner { padding: 90px 0 40px; }
    .auth-box { padding: 28px 20px; }
    .team-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 32px; }
    .contact-form-side { padding: 20px; }
    .member-content { padding: 20px; }
}

/* ========== 短信验证弹窗 ========== */
.sms-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.sms-modal.active {
    display: flex;
}
.sms-modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, .55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.sms-modal-box {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 36px 30px 30px;
    animation: smsFadeIn .3s var(--bounce);
}
@keyframes smsFadeIn {
    from { opacity: 0; transform: translateY(24px) scale(.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.sms-modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    border: none;
    background: transparent;
    font-size: 26px;
    line-height: 1;
    color: var(--gray-400);
    cursor: pointer;
    transition: var(--transition);
}
.sms-modal-close:hover { color: var(--gray-700); }
.sms-modal-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    background: var(--gradient-primary);
}
.sms-modal-title {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 8px;
}
.sms-modal-desc {
    text-align: center;
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 22px;
    line-height: 1.6;
}
.sms-field { margin-bottom: 16px; }
.sms-field label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.sms-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    color: var(--gray-800);
}
.sms-field input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,.1);
}
.sms-code-row {
    display: flex;
    gap: 10px;
}
.sms-code-row input { flex: 1; }
.sms-send-btn {
    flex-shrink: 0;
    min-width: 110px;
    white-space: nowrap;
}
.sms-send-btn:disabled {
    opacity: .6;
    cursor: not-allowed;
}
.sms-modal-msg {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    line-height: 1.5;
}
.sms-modal-msg.error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}
.sms-modal-msg.success {
    background: #ecfdf5;
    color: var(--success);
    border: 1px solid #a7f3d0;
}
.sms-modal-actions {
    display: flex;
    gap: 12px;
}
.sms-modal-actions .btn { flex: 1; }
.sms-modal-actions .btn:disabled {
    opacity: .6;
    cursor: not-allowed;
}

@media (max-width: 480px) {
    .sms-modal-box { padding: 28px 20px 24px; }
}