/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background-color: #0a0a14;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 100, 200, 0.1) 0%, transparent 25%),
        radial-gradient(circle at 80% 70%, rgba(0, 195, 255, 0.1) 0%, transparent 25%),
        linear-gradient(to bottom, #0a0a14, #050510);
    background-attachment: fixed;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background: rgba(10, 15, 30, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 0 20px rgba(0, 195, 255, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 195, 255, 0.2);
    animation: fadeInDown 0.8s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    color: #00c3ff;
    font-size: 32px;
    font-weight: 800;
    text-shadow: 0 0 15px rgba(0, 195, 255, 0.8);
    letter-spacing: 1px;
    background: linear-gradient(90deg, #00c3ff, #0066ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    padding-left: 30px;
}

.logo:before {
    content: "🔒";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.7);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 35px;
    position: relative;
}

nav ul li a {
    text-decoration: none;
    color: #aaa;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 10px 15px;
    border-radius: 30px;
    position: relative;
    font-size: 18px;
    letter-spacing: 0.5px;
}

nav ul li a:hover,
nav ul li a.active {
    color: #00c3ff;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.7);
    background: rgba(0, 195, 255, 0.1);
}

nav ul li a.active:after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 15px;
    width: calc(100% - 30px);
    height: 2px;
    background: linear-gradient(90deg, transparent, #00c3ff, transparent);
    border-radius: 2px;
    animation: expandLine 0.5s ease;
}

@keyframes expandLine {
    from { width: 0; }
    to { width: calc(100% - 30px); }
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 30px;
    height: 3px;
    background: linear-gradient(90deg, #00c3ff, #0066ff);
    margin: 5px 0;
    transition: 0.4s;
    border-radius: 2px;
    box-shadow: 0 0 5px rgba(0, 195, 255, 0.5);
}

.menu-toggle span:nth-child(2) {
    width: 25px;
}

/* 主体内容 */
main {
    min-height: calc(100vh - 140px);
    padding: 50px 0;
}

/* 首页英雄区域 */
.hero {
    background: linear-gradient(135deg, rgba(10, 20, 40, 0.9), rgba(5, 15, 30, 0.95)), 
                radial-gradient(circle at center, rgba(0, 100, 200, 0.2), transparent 70%);
    color: white;
    text-align: center;
    padding: 140px 20px;
    border-radius: 20px;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 195, 255, 0.2);
    box-shadow: 0 0 40px rgba(0, 100, 200, 0.4);
    animation: fadeInUp 1s ease;
}

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

.hero:before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 195, 255, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    z-index: -1;
}

.hero:after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 50%, rgba(0, 195, 255, 0.05) 50%),
        linear-gradient(transparent 50%, rgba(0, 195, 255, 0.05) 50%);
    background-size: 20px 20px;
    z-index: -1;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero h2 {
    font-size: 56px;
    margin-bottom: 30px;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.9);
    letter-spacing: 2px;
    background: linear-gradient(90deg, #00c3ff, #00ffaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulseText 2s infinite;
}

@keyframes pulseText {
    0% { text-shadow: 0 0 20px rgba(0, 195, 255, 0.9); }
    50% { text-shadow: 0 0 30px rgba(0, 195, 255, 1), 0 0 40px rgba(0, 195, 255, 0.7); }
    100% { text-shadow: 0 0 20px rgba(0, 195, 255, 0.9); }
}

.hero p {
    font-size: 26px;
    margin-bottom: 50px;
    opacity: 0.95;
    max-width: 850px;
    margin: 0 auto 50px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    line-height: 1.7;
    animation: fadeIn 1.5s ease;
}

/* 统计数据 */
.stats {
    margin-bottom: 70px;
    animation: fadeIn 1s ease;
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.stat-card {
    background: rgba(20, 30, 50, 0.7);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 195, 255, 0.2);
    backdrop-filter: blur(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.stat-card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, #00c3ff, transparent);
}

.stat-card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: 0 20px 40px rgba(0, 100, 200, 0.5);
    border-color: rgba(0, 195, 255, 0.6);
}

.stat-card:hover:before {
    height: 100%;
    opacity: 0.1;
}

.stat-card h3 {
    font-size: 44px;
    color: #00c3ff;
    margin-bottom: 20px;
    text-shadow: 0 0 15px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.stat-card p {
    color: #bbb;
    font-size: 20px;
    letter-spacing: 1px;
    font-weight: 300;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, #00c3ff, #0066ff);
    color: #fff;
    padding: 18px 45px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.4s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 0 25px rgba(0, 195, 255, 0.6);
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    font-size: 18px;
    text-transform: uppercase;
}

.btn:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 195, 255, 0.9);
}

.btn:after {
    content: "";
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20%;
    height: 200%;
    background: rgba(255, 255, 255, 0.4);
    transform: rotate(30deg);
    transition: all 0.8s;
}

.btn:hover:after {
    left: 140%;
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: #00c3ff;
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.4s ease;
    border: 2px solid #00c3ff;
    box-shadow: 0 0 20px rgba(0, 195, 255, 0.4);
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    font-size: 18px;
    text-transform: uppercase;
    cursor: pointer;
}

.btn-outline:hover {
    background: linear-gradient(135deg, #00c3ff, #0066ff);
    color: #fff;
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 195, 255, 0.7);
}

.btn-outline:after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.5s ease;
    z-index: -1;
}

.btn-outline:hover:after {
    transform: scaleX(1);
    transform-origin: left;
}

/* 特色卡片 */
.features {
    margin-bottom: 70px;
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.feature-card {
    background: rgba(20, 30, 50, 0.7);
    padding: 50px 40px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 195, 255, 0.2);
    backdrop-filter: blur(5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
    animation: floatIn 0.8s ease;
}

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

.feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.4s;
}

.feature-card:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, transparent, #00c3ff, transparent);
}

.feature-card:hover {
    transform: translateY(-20px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 100, 200, 0.6);
    border-color: rgba(0, 195, 255, 0.6);
}

.feature-card:hover:before {
    height: 100%;
    opacity: 0.05;
}

.feature-card .icon {
    font-size: 70px;
    margin-bottom: 35px;
    color: #00c3ff;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.8);
    transition: all 0.3s ease;
}

.feature-card:hover .icon {
    transform: scale(1.2) rotate(5deg);
}

.feature-card h3 {
    color: #00c3ff;
    margin-bottom: 30px;
    font-size: 28px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.5);
    font-weight: 700;
}

.feature-card p {
    color: #ccc;
    font-size: 20px;
    margin-bottom: 30px;
    line-height: 1.7;
}

/* 警告区域 */
.warning {
    background: rgba(40, 15, 25, 0.8);
    border-left: 8px solid #ff0055;
    padding: 50px 0;
    border-radius: 0 20px 20px 0;
    margin-bottom: 70px;
    box-shadow: 0 0 30px rgba(255, 0, 85, 0.3);
    animation: fadeIn 1s ease;
}

.warning .container h2 {
    color: #ff0055;
    margin-bottom: 35px;
    text-align: center;
    font-size: 40px;
    text-shadow: 0 0 15px rgba(255, 0, 85, 0.7);
    font-weight: 700;
}

.warning ul {
    max-width: 950px;
    margin: 0 auto;
    padding-left: 50px;
}

.warning ul li {
    margin-bottom: 25px;
    font-size: 24px;
    color: #eee;
    position: relative;
    padding-left: 40px;
    line-height: 1.7;
    transition: all 0.3s ease;
}

.warning ul li:hover {
    transform: translateX(10px);
    color: #ff5588;
}

.warning ul li:before {
    content: "⚠";
    position: absolute;
    left: 0;
    color: #ff0055;
    text-shadow: 0 0 10px rgba(255, 0, 85, 0.9);
    font-size: 28px;
    top: 50%;
    transform: translateY(-50%);
}

/* 页面头部 */
.page-header {
    text-align: center;
    margin-bottom: 60px;
    padding: 50px;
    background: rgba(20, 30, 50, 0.8);
    border-radius: 20px;
    box-shadow: 0 0 30px rgba(0, 100, 200, 0.4);
    border: 1px solid rgba(0, 195, 255, 0.2);
    backdrop-filter: blur(5px);
    animation: fadeInDown 0.8s ease;
}

.page-header h2 {
    font-size: 48px;
    color: #00c3ff;
    margin-bottom: 30px;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.8);
    font-weight: 700;
}

.page-header p {
    font-size: 24px;
    color: #ccc;
    max-width: 750px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 内容区域 */
.content {
    background: rgba(20, 30, 50, 0.8);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 0 30px rgba(0, 100, 200, 0.4);
    margin-bottom: 60px;
    border: 1px solid rgba(0, 195, 255, 0.2);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.8s ease;
}

/* 诈骗类型 */
.fraud-type {
    margin-bottom: 60px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(0, 195, 255, 0.2);
    animation: fadeInUp 0.6s ease;
}

.fraud-type:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.fraud-type h3 {
    color: #00c3ff;
    margin-bottom: 30px;
    font-size: 32px;
    position: relative;
    padding-left: 30px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.fraud-type h3:before {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    width: 12px;
    height: 40px;
    background: linear-gradient(to bottom, #00c3ff, #0066ff);
    border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 195, 255, 0.8);
}

.fraud-content {
    background: rgba(10, 20, 40, 0.6);
    padding: 35px;
    border-radius: 15px;
    border-left: 6px solid #00c3ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.fraud-content p {
    margin-bottom: 30px;
    font-size: 20px;
    line-height: 1.9;
    color: #ddd;
}

.fraud-content strong {
    color: #00c3ff;
    text-shadow: 0 0 8px rgba(0, 195, 255, 0.6);
    font-weight: 600;
}

/* 案例研究 */
.case-study {
    margin-bottom: 60px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(0, 195, 255, 0.2);
    animation: fadeInUp 0.6s ease;
}

.case-study:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.case-study h3 {
    color: #00c3ff;
    margin-bottom: 30px;
    font-size: 32px;
    position: relative;
    padding-left: 30px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.case-study h3:before {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    width: 12px;
    height: 40px;
    background: linear-gradient(to bottom, #00c3ff, #0066ff);
    border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 195, 255, 0.8);
}

.case-content {
    background: rgba(10, 20, 40, 0.6);
    padding: 35px;
    border-radius: 15px;
    border-left: 6px solid #00c3ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.case-content p {
    margin-bottom: 30px;
    font-size: 20px;
    line-height: 1.9;
    color: #ddd;
}

.case-content strong {
    color: #00c3ff;
    text-shadow: 0 0 8px rgba(0, 195, 255, 0.6);
    font-weight: 600;
}

/* 指南部分 */
.guide-section {
    margin-bottom: 60px;
    animation: fadeIn 0.6s ease;
}

.guide-section:last-child {
    margin-bottom: 0;
}

.guide-section h3 {
    color: #00c3ff;
    margin-bottom: 35px;
    font-size: 32px;
    position: relative;
    padding-left: 30px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.guide-section h3:before {
    content: "";
    position: absolute;
    left: 0;
    top: 5px;
    width: 12px;
    height: 40px;
    background: linear-gradient(to bottom, #00c3ff, #0066ff);
    border-radius: 4px;
    box-shadow: 0 0 15px rgba(0, 195, 255, 0.8);
}

.guide-list {
    padding-left: 35px;
}

.guide-list li {
    margin-bottom: 30px;
    font-size: 20px;
    line-height: 1.9;
    position: relative;
    padding-left: 40px;
    color: #ddd;
}

.guide-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00ffaa;
    text-shadow: 0 0 8px rgba(0, 255, 170, 0.8);
    font-weight: bold;
    font-size: 24px;
    top: 50%;
    transform: translateY(-50%);
}

.guide-steps {
    padding-left: 35px;
}

.guide-steps li {
    margin-bottom: 35px;
    font-size: 20px;
    line-height: 1.9;
    color: #ddd;
    position: relative;
    padding-left: 50px;
}

.guide-steps li:before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #00c3ff, #0066ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(0, 195, 255, 0.7);
}

.guide-steps strong {
    color: #00c3ff;
    text-shadow: 0 0 8px rgba(0, 195, 255, 0.6);
    font-weight: 600;
}

.special-groups {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.group {
    background: rgba(10, 20, 40, 0.6);
    padding: 35px;
    border-radius: 15px;
    border-left: 6px solid #00c3ff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.group:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 100, 200, 0.4);
}

.group h4 {
    color: #00c3ff;
    margin-bottom: 30px;
    font-size: 26px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

/* 举报信息 */
.report-info {
    margin-bottom: 60px;
    animation: fadeIn 0.8s ease;
}

.report-info h3 {
    color: #00c3ff;
    margin-bottom: 50px;
    font-size: 40px;
    text-align: center;
    position: relative;
    padding-left: 30px;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.8);
    font-weight: 700;
}

.report-info h3:before {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: -15px;
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, transparent, #00c3ff, transparent);
    border-radius: 3px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 45px;
    margin-bottom: 60px;
}

.contact-item {
    text-align: center;
    padding: 50px 35px;
    background: rgba(20, 30, 50, 0.8);
    border-radius: 15px;
    transition: all 0.4s ease;
    border: 1px solid rgba(0, 195, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
    animation: floatIn 0.8s ease;
}

.contact-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 100, 200, 0.6);
    border-color: rgba(0, 195, 255, 0.6);
}

.contact-item .icon {
    font-size: 60px;
    margin-bottom: 30px;
    color: #00c3ff;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.8);
    transition: all 0.3s ease;
}

.contact-item:hover .icon {
    transform: scale(1.2);
}

.contact-item h4 {
    color: #00c3ff;
    margin-bottom: 30px;
    font-size: 26px;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.phone-number {
    font-size: 40px;
    font-weight: 800;
    color: #ff0055;
    margin: 30px 0;
    text-shadow: 0 0 15px rgba(255, 0, 85, 0.9);
    letter-spacing: 1px;
}

/* 举报表单 */
.report-form {
    background: rgba(20, 30, 50, 0.8);
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 0 30px rgba(0, 100, 200, 0.4);
    border: 1px solid rgba(0, 195, 255, 0.2);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.8s ease;
}

.report-form h3 {
    color: #00c3ff;
    margin-bottom: 50px;
    font-size: 40px;
    text-align: center;
    position: relative;
    padding-left: 30px;
    text-shadow: 0 0 20px rgba(0, 195, 255, 0.8);
    font-weight: 700;
}

.report-form h3:before {
    content: "";
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: -15px;
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, transparent, #00c3ff, transparent);
    border-radius: 3px;
}

.form-section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(0, 195, 255, 0.2);
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section h4 {
    color: #00c3ff;
    margin-bottom: 25px;
    font-size: 24px;
    position: relative;
    padding-left: 20px;
}

.form-section h4:before {
    content: "";
    position: absolute;
    left: 0;
    top: 3px;
    width: 8px;
    height: 25px;
    background: linear-gradient(to bottom, #00c3ff, #0066ff);
    border-radius: 2px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.form-group {
    margin-bottom: 30px;
    position: relative;
}

.form-row .form-group {
    flex: 1 0 0;
    padding: 0 15px;
    min-width: 250px;
}

.form-group.half-width {
    flex: 1 0 0;
    padding: 0 15px;
    min-width: 250px;
}

.form-group label {
    display: block;
    margin-bottom: 15px;
    font-weight: 500;
    color: #eee;
    font-size: 18px;
}

.required {
    color: #ff0055;
    text-shadow: 0 0 5px rgba(255, 0, 85, 0.7);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid rgba(0, 195, 255, 0.3);
    border-radius: 10px;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(10, 20, 40, 0.6);
    color: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00c3ff;
    box-shadow: 0 0 20px rgba(0, 195, 255, 0.6);
    background: rgba(10, 20, 40, 0.8);
}

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

.char-counter {
    text-align: right;
    font-size: 14px;
    color: #aaa;
    margin-top: 8px;
}

.file-upload-container {
    border: 2px dashed rgba(0, 195, 255, 0.3);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    background: rgba(10, 20, 40, 0.3);
}

.file-upload-container.highlight {
    border-color: #00c3ff;
    background: rgba(0, 195, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 195, 255, 0.3);
}

.file-upload-area {
    cursor: pointer;
    padding: 20px;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.file-upload-area p {
    margin: 10px 0;
    color: #ccc;
    font-size: 16px;
}

.file-types {
    font-size: 14px !important;
    color: #888 !important;
}

.file-list {
    margin-top: 20px;
    text-align: left;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    background: rgba(0, 195, 255, 0.1);
    border-radius: 5px;
    margin-bottom: 10px;
}

.file-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-right: 10px;
}

.file-size {
    color: #888;
    font-size: 14px;
    margin-right: 10px;
}

.remove-file {
    background: none;
    border: none;
    color: #ff0055;
    font-size: 20px;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.remove-file:hover {
    background: rgba(255, 0, 85, 0.2);
    transform: scale(1.1);
}

.file-info {
    font-size: 14px;
    color: #888;
    margin-top: 10px;
    text-align: center;
}

.checkbox-group {
    margin: 30px 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: 16px;
    line-height: 1.6;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #00c3ff;
    border-radius: 4px;
    margin-right: 15px;
    position: relative;
    flex-shrink: 0;
    margin-top: 3px;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark:after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #00c3ff;
    font-weight: bold;
    font-size: 16px;
}

.form-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.form-buttons .btn,
.form-buttons .btn-outline {
    min-width: 150px;
    text-align: center;
}

/* 页脚 */
footer {
    background: rgba(5, 10, 20, 0.98);
    color: #aaa;
    padding: 70px 0 50px;
    border-top: 1px solid rgba(0, 195, 255, 0.2);
    animation: fadeIn 1s ease;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-section h3 {
    margin-bottom: 35px;
    font-size: 26px;
    position: relative;
    padding-bottom: 20px;
    color: #00c3ff;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.6);
    font-weight: 700;
}

.footer-section h3:before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, #00c3ff, transparent);
    border-radius: 2px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 20px;
}

.footer-section ul li a {
    color: #bbb;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 20px;
    position: relative;
    padding-left: 15px;
}

.footer-section ul li a:before {
    content: "▶";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: #00c3ff;
    opacity: 0;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: #00c3ff;
    text-shadow: 0 0 10px rgba(0, 195, 255, 0.8);
    padding-left: 25px;
}

.footer-section ul li a:hover:before {
    opacity: 1;
    left: 10px;
}

.footer-section p {
    color: #ccc;
    font-size: 20px;
    line-height: 1.9;
}

.emergency-number {
    font-size: 32px;
    font-weight: 800;
    color: #ff0055;
    margin-bottom: 25px;
    display: block;
    text-shadow: 0 0 15px rgba(255, 0, 85, 0.8);
    letter-spacing: 1px;
}

.footer-bottom {
    border-top: 1px solid rgba(0, 195, 255, 0.1);
    padding-top: 35px;
    text-align: center;
    font-size: 20px;
    color: #888;
}

/* 回到顶部按钮 */
#backToTop {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00c3ff, #0066ff);
    color: white;
    font-size: 32px;
    border: none;
    cursor: pointer;
    display: none;
    z-index: 999;
    box-shadow: 0 0 25px rgba(0, 195, 255, 0.8);
    transition: all 0.4s ease;
    animation: pulse 2s infinite;
}

#backToTop:hover {
    transform: translateY(-8px) scale(1.1);
    box-shadow: 0 0 40px rgba(0, 195, 255, 1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 25px rgba(0, 195, 255, 0.8); }
    50% { box-shadow: 0 0 35px rgba(0, 195, 255, 1); }
    100% { box-shadow: 0 0 25px rgba(0, 195, 255, 0.8); }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h2 {
        font-size: 46px;
    }
    
    .hero p {
        font-size: 22px;
    }
    
    .stat-card h3 {
        font-size: 38px;
    }
    
    .feature-card .icon {
        font-size: 60px;
    }
    
    .warning ul li {
        font-size: 22px;
    }
    
    .page-header h2 {
        font-size: 42px;
    }
    
    .page-header p {
        font-size: 22px;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: row;
        padding: 15px 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    nav ul {
        position: fixed;
        top: 90px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background: rgba(10, 15, 30, 0.98);
        box-shadow: 0 15px 25px rgba(0,0,0,0.4);
        transition: 0.5s ease;
        padding: 30px 0;
        backdrop-filter: blur(10px);
        z-index: 1000;
        border-radius: 0 0 20px 20px;
    }
    
    nav ul.show {
        left: 0;
    }
    
    nav ul li {
        margin: 25px 0;
        text-align: center;
    }
    
    .hero {
        padding: 80px 20px;
    }
    
    .hero h2 {
        font-size: 38px;
    }
    
    .hero p {
        font-size: 20px;
    }
    
    .stats .container {
        grid-template-columns: 1fr 1fr;
    }
    
    .features .container {
        grid-template-columns: 1fr;
    }
    
    .warning ul li {
        font-size: 20px;
        padding-left: 35px;
    }
    
    .page-header {
        padding: 35px 20px;
    }
    
    .page-header h2 {
        font-size: 36px;
    }
    
    .page-header p {
        font-size: 20px;
    }
    
    .content {
        padding: 30px 20px;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .special-groups {
        grid-template-columns: 1fr;
    }
    
    .report-form {
        padding: 35px 20px;
    }
    
    .guide-steps li {
        font-size: 18px;
    }
    
    .guide-list li {
        font-size: 18px;
    }
    
    .form-row {
        flex-direction: column;
        margin: 0;
    }
    
    .form-row .form-group,
    .form-group.half-width {
        padding: 0;
        min-width: 100%;
    }
    
    .form-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .form-buttons .btn,
    .form-buttons .btn-outline {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .logo {
        font-size: 26px;
    }
    
    .hero h2 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .stats .container {
        grid-template-columns: 1fr;
    }
    
    .stat-card h3 {
        font-size: 32px;
    }
    
    .warning ul li {
        font-size: 18px;
    }
    
    .page-header h2 {
        font-size: 30px;
    }
    
    .page-header p {
        font-size: 18px;
    }
    
    .fraud-type h3,
    .case-study h3,
    .guide-section h3 {
        font-size: 26px;
    }
    
    .fraud-content p,
    .case-content p {
        font-size: 18px;
    }
    
    .form-section h4 {
        font-size: 22px;
    }
}