/* ==========================================
   联邦网络安全防御风格 (Federal Cyber Defense)
   主色调：深海重型蓝 (#0B132B)、国防绿 (#00F5D4)、警示红 (#D90429)
   ========================================== */

:root {
    --color-bg-dark: #0B132B;
    --color-bg-navy: #1C2541;
    --color-bg-light: #F8F9FA;
    --color-bg-white: #FFFFFF;
    --color-primary: #1C2541;
    --color-accent-green: #00F5D4;
    --color-accent-green-dark: #2EC4B6;
    --color-alert-red: #D90429;
    --color-text-dark: #1F2937;
    --color-text-muted: #6B7280;
    --color-text-light: #F3F4F6;
    --color-border-double: #3A506B;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.6;
}

/* 顶部跑马灯 */
.marquee-container {
    background-color: var(--color-alert-red);
    color: var(--color-text-light);
    overflow: hidden;
    white-space: nowrap;
    padding: 8px 0;
    font-size: 14px;
    font-weight: bold;
    border-bottom: 2px solid #000;
}

.marquee-content {
    display: inline-block;
    animation: marquee 45s linear infinite;
    padding-left: 100%;
}

@keyframes marquee {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-100%, 0, 0); }
}

/* 头部导航 */
header {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    border-bottom: 3px double var(--color-border-double);
}

.header-top {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-badge {
    background-color: var(--color-alert-red);
    color: white;
    font-size: 12px;
    padding: 2px 8px;
    font-weight: bold;
    border-radius: 3px;
    letter-spacing: 1px;
}

.logo-title {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1px;
}

.header-meta {
    font-size: 12px;
    color: var(--color-accent-green);
    font-family: monospace;
}

nav {
    background-color: var(--color-bg-navy);
}

.nav-links {
    max-width: 1200px;
    margin: 0 auto;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}

.nav-links li a {
    display: block;
    padding: 12px 20px;
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-links li a:hover, .nav-links li.active a {
    background-color: var(--color-bg-dark);
    color: var(--color-accent-green);
    box-shadow: inset 0 -2px 0 var(--color-accent-green);
}

/* 面包屑导航 */
.breadcrumb-nav {
    max-width: 1200px;
    margin: 15px auto 0 auto;
    padding: 0 20px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.breadcrumb-nav a {
    color: var(--color-bg-navy);
    text-decoration: none;
}

.breadcrumb-nav a:hover {
    text-decoration: underline;
}

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

/* 核心验真区 */
.verification-hero {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    border: 4px double var(--color-border-double);
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}

.verification-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(28,37,65,0.8) 0%, rgba(11,19,43,1) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.hero-content p {
    color: var(--color-text-light);
    font-size: 15px;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* 验真搜索框 */
.search-box-container {
    background: rgba(28,37,65,0.6);
    border: 1px solid var(--color-border-double);
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.search-input-group {
    display: flex;
    gap: 10px;
}

.search-input {
    flex: 1;
    padding: 15px 20px;
    font-size: 16px;
    border: 2px solid var(--color-border-double);
    background-color: #0b132b;
    color: white;
    border-radius: 4px;
    outline: none;
}

.search-input:focus {
    border-color: var(--color-accent-green);
}

.search-btn {
    background-color: var(--color-alert-red);
    color: white;
    border: none;
    padding: 0 30px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.search-btn:hover {
    background-color: #b3001e;
}

/* 扫描动效与结果 */
.scan-status {
    margin-top: 15px;
    font-family: monospace;
    font-size: 14px;
    color: var(--color-accent-green);
    display: none;
}

.scan-result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
    display: none;
    font-weight: bold;
    text-align: left;
}

.scan-result.danger {
    background-color: rgba(217, 4, 41, 0.15);
    border: 1px solid var(--color-alert-red);
    color: #ff4d6d;
}

.scan-result.success {
    background-color: rgba(0, 245, 212, 0.1);
    border: 1px solid var(--color-accent-green);
    color: var(--color-accent-green);
}

/* 安全节点发布区 */
.nodes-section {
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 6px;
}

.section-title {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-left: 4px solid var(--color-bg-navy);
    padding-left: 10px;
}

.node-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.node-card {
    border: 1px solid #E5E7EB;
    padding: 15px;
    border-radius: 4px;
    background-color: var(--color-bg-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.node-info h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.node-info p {
    font-size: 12px;
    color: var(--color-text-muted);
    font-family: monospace;
}

.node-status {
    text-align: right;
}

.node-ms {
    font-size: 12px;
    color: var(--color-accent-green-dark);
    font-weight: bold;
    font-family: monospace;
}

.node-badge {
    background-color: #d1fae5;
    color: #065f46;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: bold;
}

/* 图文对比区 */
.comparison-section {
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 6px;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

@media (max-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr;
    }
}

.comparison-box {
    border: 1px solid #E5E7EB;
    border-radius: 6px;
    overflow: hidden;
}

.comparison-box.genuine {
    border-top: 4px solid var(--color-accent-green-dark);
}

.comparison-box.fake {
    border-top: 4px solid var(--color-alert-red);
}

.comparison-header {
    padding: 12px 15px;
    font-weight: bold;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.genuine .comparison-header {
    background-color: #f0fdf4;
    color: #166534;
}

.fake .comparison-header {
    background-color: #fef2f2;
    color: #991b1b;
}

.comparison-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.comparison-body {
    padding: 15px;
}

.comparison-body ul {
    list-style-position: inside;
    font-size: 14px;
    color: var(--color-text-dark);
}

.comparison-body li {
    margin-bottom: 8px;
}

/* 最新维权公告 */
.announcement-section {
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 25px;
    margin-bottom: 30px;
    border-radius: 6px;
}

.announcement-content {
    font-size: 14px;
    color: var(--color-text-dark);
    line-height: 1.8;
}

.announcement-content p {
    margin-bottom: 15px;
    text-indent: 2em;
}

/* 举报与底部栏目 */
.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.action-card {
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 25px;
    border-radius: 6px;
    text-align: center;
}

.action-card h3 {
    margin-bottom: 10px;
    font-size: 18px;
}

.action-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.action-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--color-bg-navy);
    color: white;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    font-size: 14px;
}

.action-btn:hover {
    background-color: var(--color-bg-dark);
}

/* 侧边栏/主区布局（内页用） */
.layout-wrapper {
    display: flex;
    gap: 30px;
}

.main-content {
    flex: 3;
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 30px;
    border-radius: 6px;
}

.sidebar {
    flex: 1;
}

@media (max-width: 992px) {
    .layout-wrapper {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
    }
}

.sidebar-widget {
    background-color: var(--color-bg-white);
    border: 1px solid #E5E7EB;
    padding: 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.sidebar-widget h3 {
    font-size: 16px;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--color-bg-navy);
    padding-bottom: 8px;
}

.widget-links {
    list-style: none;
}

.widget-links li {
    margin-bottom: 10px;
    font-size: 14px;
}

.widget-links li a {
    color: var(--color-text-dark);
    text-decoration: none;
}

.widget-links li a:hover {
    color: var(--color-alert-red);
    text-decoration: underline;
}

/* FAQ页面折叠卡片 */
.faq-item {
    border: 1px solid #E5E7EB;
    border-radius: 4px;
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    background-color: var(--color-bg-light);
    padding: 15px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    padding: 15px;
    border-top: 1px solid #E5E7EB;
    display: none;
    font-size: 14px;
    color: var(--color-text-dark);
    background-color: white;
}

/* 举报表单 */
.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #D1D5DB;
    border-radius: 4px;
    font-size: 14px;
}

.form-control:focus {
    border-color: var(--color-bg-navy);
    outline: none;
}

.form-submit-btn {
    background-color: var(--color-bg-navy);
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 15px;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
}

.form-submit-btn:hover {
    background-color: var(--color-bg-dark);
}

/* APP下载页面专属样式 */
.app-download-hero {
    display: flex;
    align-items: center;
    gap: 40px;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-navy) 100%);
    color: white;
    padding: 40px;
    border-radius: 6px;
    margin-bottom: 30px;
}

@media (max-width: 768px) {
    .app-download-hero {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
}

.app-hero-info {
    flex: 1;
}

.app-hero-info h2 {
    font-size: 28px;
    margin-bottom: 15px;
}

.app-hero-info p {
    font-size: 15px;
    margin-bottom: 25px;
    opacity: 0.9;
}

.app-hero-img {
    width: 280px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3);
}

.download-badge-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .download-badge-group {
        justify-content: center;
    }
}

.download-badge-btn {
    background-color: white;
    color: black;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid #E5E7EB;
    transition: transform 0.2s;
}

.download-badge-btn:hover {
    transform: translateY(-2px);
}

/* 页脚 */
footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    border-top: 3px double var(--color-border-double);
    padding: 40px 20px 20px 20px;
    margin-top: 50px;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 30px;
}

.footer-col h4 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--color-accent-green);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 8px;
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 13px;
    opacity: 0.8;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--color-accent-green);
}

.footer-bottom {
    max-width: 1200px;
    margin: 20px auto 0 auto;
    text-align: center;
    font-size: 12px;
    color: var(--color-text-muted);
}