/* CyberChat APP介绍网站 - 科幻风格CSS */

:root {
    --primary: #00f0ff;
    --secondary: #ff0080;
    --accent: #00ff88;
    --bg-dark: #0a0a1a;
    --bg-card: rgba(26, 26, 46, 0.8);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --gradient-1: linear-gradient(135deg, #00f0ff 0%, #ff0080 100%);
    --gradient-2: linear-gradient(45deg, #00f0ff 0%, #00c0ff 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 粒子背景 */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
    transition: all 0.3s;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s;
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 20px 50px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
    align-items: center;
}

.button-row {
    display: flex;
    gap: 15px;
    justify-content: center;
    width: 100%;
    max-width: 600px;
}

.button-row .btn {
    flex: 1;
    min-width: 0;
    max-width: 290px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 25px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: 2px solid transparent;
    cursor: pointer;
    box-sizing: border-box;
}

.btn-primary {
    background: var(--gradient-2);
    color: var(--bg-dark);
    border-color: transparent;
}

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

.btn-tertiary {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-tertiary:hover {
    background: rgba(0, 255, 136, 0.1);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.btn-web {
    background: transparent;
    color: #ffc107;
    border-color: #ffc107;
}

.btn-web:hover {
    background: rgba(255, 193, 7, 0.1);
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.3);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.3);
}

.btn-icon {
    font-size: 20px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.btn-text small {
    font-size: 12px;
    opacity: 0.8;
}

.btn-text strong {
    font-size: 16px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 手机模型 */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #1a1a3e 0%, #0d0d2a 100%);
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 0 60px rgba(0, 240, 255, 0.2);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    border-radius: 30px;
    overflow: hidden;
    border: 1px solid rgba(0, 240, 255, 0.2);
}

.chat-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: 15px;
    background: rgba(0, 240, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
}

.message {
    margin-bottom: 15px;
}

.message .bubble {
    padding: 12px 16px;
    border-radius: 18px;
    max-width: 80%;
    font-size: 14px;
}

.message.received .bubble {
    background: rgba(255, 255, 255, 0.1);
    border-bottom-left-radius: 4px;
}

.message.sent .bubble {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.message .time {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.chat-input {
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 功能特性 */
.features {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 15px;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 42px;
    margin-bottom: 15px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 240, 255, 0.2);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 22px;
    margin-bottom: 15px;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 界面展示 - 轮播 */
.screenshots {
    padding: 100px 20px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.05) 50%, transparent 100%);
}

.screenshots-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.carousel-container {
    position: relative;
    overflow: hidden;
}

.carousel-slide {
    display: none;
    animation: fadeIn 0.5s ease;
}

.carousel-slide.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* 手机模型 */
.screenshot-mockup {
    perspective: 1000px;
}

.mockup-device {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #1a1a3e 0%, #0d0d2a 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 0 60px rgba(0, 240, 255, 0.3),
        inset 0 0 30px rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s;
}

.mockup-device:hover {
    transform: rotateY(0) rotateX(0);
}

.mockup-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    border-radius: 30px;
    overflow: hidden;
    border: 1px solid rgba(0, 240, 255, 0.2);
}

/* 登录界面预览 */
.app-login {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 30px 20px;
}

.app-header {
    text-align: center;
    margin-bottom: 40px;
}

.app-logo {
    font-size: 48px;
    margin-bottom: 10px;
}

.app-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    background: linear-gradient(45deg, #00f0ff, #ff0080);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 5px;
}

.app-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
}

.login-form-preview {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-field {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 10px;
}

.input-field .icon {
    font-size: 16px;
}

.input-field .placeholder {
    font-size: 13px;
    color: var(--text-secondary);
}

.login-btn {
    padding: 14px;
    background: linear-gradient(45deg, #00f0ff, #00c0ff);
    border-radius: 10px;
    text-align: center;
    color: var(--bg-dark);
    font-weight: bold;
    font-size: 14px;
    margin-top: 10px;
}

.register-link {
    text-align: center;
    font-size: 12px;
    color: var(--primary);
    margin-top: 15px;
}

/* 聊天界面预览 */
.app-chat {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.chat-header-preview {
    padding: 15px;
    background: rgba(0, 240, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.chat-title {
    font-weight: 500;
    font-size: 14px;
}

.online-count {
    font-size: 12px;
    color: var(--accent);
}

.chat-messages-preview {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.msg-item {
    display: flex;
    gap: 10px;
}

.msg-item.self {
    justify-content: flex-end;
}

.msg-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #fff;
    font-weight: bold;
    flex-shrink: 0;
}

.msg-content {
    max-width: 70%;
}

.msg-user {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 3px;
}

.admin-tag {
    background: linear-gradient(45deg, #ff0080, #ff00ff);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 9px;
    color: #fff;
    margin-left: 5px;
}

.msg-text {
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    border-bottom-left-radius: 4px;
}

.msg-item.self .msg-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 4px;
}

.msg-time {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 3px;
}

.chat-input-preview {
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    border-top: 1px solid rgba(0, 240, 255, 0.1);
}

.input-icon {
    font-size: 20px;
}

.input-text {
    flex: 1;
    font-size: 13px;
    color: var(--text-secondary);
}

.send-btn {
    width: 32px;
    height: 32px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--bg-dark);
}

/* 表情面板预览 */
.app-emoji {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: rgba(26, 26, 46, 0.95);
}

.emoji-panel-header {
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    font-weight: 500;
}

.close-btn {
    color: var(--text-secondary);
    font-size: 16px;
}

.emoji-categories {
    display: flex;
    gap: 15px;
    padding: 12px 15px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
}

.emoji-categories span {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 5px 10px;
    border-radius: 15px;
}

.emoji-categories span.active {
    background: rgba(0, 240, 255, 0.2);
    color: var(--primary);
}

.emoji-grid-preview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 15px;
}

.emoji-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: all 0.2s;
}

.emoji-item:hover {
    background: rgba(0, 240, 255, 0.2);
    transform: scale(1.1);
}

/* 管理后台预览 */
.app-admin {
    height: 100%;
    display: flex;
}

.admin-sidebar {
    width: 160px;
    background: rgba(0, 0, 0, 0.3);
    border-right: 1px solid rgba(0, 240, 255, 0.1);
    padding: 15px 10px;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.brand-icon {
    font-size: 20px;
}

.brand-text {
    font-size: 13px;
    font-weight: bold;
}

.admin-menu {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.menu-item.active {
    background: rgba(0, 240, 255, 0.15);
    color: var(--primary);
}

.menu-icon {
    font-size: 14px;
}

.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.admin-header-bar {
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 240, 255, 0.1);
}

.page-title {
    font-size: 14px;
    font-weight: 500;
}

.admin-user {
    font-size: 12px;
    color: var(--text-secondary);
}

.admin-stats-row {
    display: flex;
    gap: 10px;
    padding: 15px;
}

.admin-stat-card {
    flex: 1;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.admin-stat-card .stat-icon {
    font-size: 20px;
    margin-bottom: 5px;
}

.admin-stat-card .stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 2px;
}

.admin-stat-card .stat-label {
    font-size: 10px;
    color: var(--text-secondary);
}

/* 截图信息 */
.screenshot-info {
    text-align: center;
    max-width: 400px;
}

.screenshot-info h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--primary);
}

.screenshot-info p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 轮播指示器 */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(0, 240, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
}

.indicator.active {
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

/* 轮播按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 50%;
    color: var(--primary);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: rgba(0, 240, 255, 0.3);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.carousel-btn.prev {
    left: -70px;
}

.carousel-btn.next {
    right: -70px;
}

@media (max-width: 768px) {
    .carousel-btn.prev {
        left: 10px;
    }
    
    .carousel-btn.next {
        right: 10px;
    }
    
    .mockup-device {
        width: 240px;
        height: 480px;
    }
}

/* 数据统计 */
.stats-section {
    padding: 100px 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.2);
}

.stat-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.stat-number-large {
    font-family: 'Orbitron', sans-serif;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.stat-label-large {
    color: var(--text-secondary);
}

/* 下载区 */
.download {
    padding: 100px 20px;
    text-align: center;
}

.download-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 42px;
    margin-bottom: 15px;
}

.download-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 15px 25px;
    background: var(--bg-card);
    border: 2px solid rgba(0, 240, 255, 0.3);
    border-radius: 12px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    min-width: 170px;
    box-sizing: border-box;
}

.download-btn:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.2);
    transform: translateY(-3px);
}

.download-btn.web {
    border-color: rgba(255, 193, 7, 0.5);
    background: rgba(255, 193, 7, 0.05);
}

.download-btn.web:hover {
    border-color: #ffc107;
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.3);
}

.download-btn .icon {
    font-size: 28px;
}

.download-btn .text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.download-btn .text small {
    font-size: 12px;
    color: var(--text-secondary);
}

.download-btn .text strong {
    font-size: 16px;
}

/* 联系表单 */
.contact {
    padding: 100px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.info-icon {
    font-size: 28px;
    width: 50px;
    height: 50px;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-content h4 {
    margin-bottom: 5px;
}

.info-content p {
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-links a {
    color: var(--primary);
    text-decoration: none;
    transition: opacity 0.3s;
}

.social-links a:hover {
    opacity: 0.8;
}

.contact-arrow-section {
    margin-top: 20px;
    padding: 20px;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.arrow-indicator {
    display: flex;
    align-items: center;
    position: relative;
}

.arrow-line {
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    display: block;
}

.arrow-head {
    font-size: 24px;
    color: var(--primary);
    margin-left: -5px;
    animation: pulse-arrow 1.5s ease-in-out infinite;
}

@keyframes pulse-arrow {
    0%, 100% { transform: translateX(0); opacity: 1; }
    50% { transform: translateX(5px); opacity: 0.7; }
}

.contact-hint {
    flex: 1;
}

.contact-hint p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 5px;
}

.contact-hint p:first-child {
    color: var(--primary);
    font-weight: 500;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-arrow {
    margin-left: 10px;
    transition: transform 0.3s;
}

.btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* 订阅 */
.subscribe {
    padding: 60px 20px;
}

.subscribe-box {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
}

.subscribe-box h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.subscribe-box p {
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.subscribe-form {
    display: flex;
    gap: 10px;
}

.subscribe-form input {
    flex: 1;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
}

.subscribe-form input:focus {
    outline: none;
    border-color: var(--primary);
}

/* 页脚 */
.footer {
    padding: 60px 20px 30px;
    border-top: 1px solid rgba(0, 240, 255, 0.1);
}

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

.footer-content {
    margin-bottom: 40px;
}

.footer-main-row {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 80px;
    flex-wrap: wrap;
}

.footer-brand {
    text-align: left;
    max-width: 280px;
}

.footer-brand .logo {
    margin-bottom: 15px;
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-item {
    text-align: left;
}

.footer-item h4 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--primary);
}

.footer-subitems {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-subitems a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-size: 14px;
}

.footer-subitems a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 240, 255, 0.1);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.admin-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 8px;
    color: var(--primary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s;
    margin-top: 10px;
}

.admin-login-btn:hover {
    background: rgba(0, 240, 255, 0.2);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    transform: translateY(-2px);
}

/* Toast提示 */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 15px 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transition: all 0.3s;
    z-index: 9999;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--accent);
    font-size: 20px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        transform: translateY(-150%);
        transition: transform 0.3s;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 15px 30px;
    }
    
    .hero-title {
        font-size: 28px;
        line-height: 1.3;
    }
    
    .hero-description {
        font-size: 14px;
        padding: 0 10px;
    }
    
    .hero-stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px 15px;
        width: 100%;
        max-width: 340px;
        margin: 0 auto;
    }
    
    .stat-item {
        padding: 10px 5px;
    }
    
    .stat-number {
        font-size: 24px;
        margin-bottom: 5px;
    }
    
    .stat-label {
        font-size: 12px;
        line-height: 1.4;
    }
    
    .hero-buttons {
        width: 100%;
        max-width: 340px;
        margin: 0 auto 30px;
        gap: 10px;
    }
    
    .button-row {
        width: 100%;
        gap: 10px;
    }
    
    .button-row .btn {
        flex: 1;
        min-width: 0;
        padding: 12px 10px;
        justify-content: center;
    }
    
    .btn-icon {
        font-size: 16px;
    }
    
    .btn-text small {
        font-size: 9px;
    }
    
    .btn-text strong {
        font-size: 12px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .section-desc {
        font-size: 14px;
        padding: 0 15px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 0 15px;
    }
    
    .stat-card {
        padding: 25px 15px;
    }
    
    .download-buttons {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        width: 100%;
        max-width: 360px;
        margin: 0 auto;
        padding: 0 15px;
    }
    
    .download-btn {
        width: 100%;
        min-width: 0;
        padding: 12px 15px;
        justify-content: center;
    }
    
    .download-btn .icon {
        font-size: 22px;
    }
    
    .download-btn .text small {
        font-size: 10px;
    }
    
    .download-btn .text strong {
        font-size: 13px;
    }
    
    .subscribe-form {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-grid {
        padding: 0 15px;
    }
    
    .contact-arrow-section {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .arrow-indicator {
        transform: rotate(90deg);
    }
    
    .contact-hint p {
        font-size: 13px;
    }
    
    .contact-form {
        padding: 25px 20px;
    }
    
    .screenshot-info h3 {
        font-size: 20px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .carousel-btn.prev {
        left: 5px;
    }
    
    .carousel-btn.next {
        right: 5px;
    }
    
    .footer-main-row {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }
    
    .footer-item {
        text-align: center;
    }
    
    .footer-subitems {
        flex-direction: row;
        justify-content: center;
        gap: 15px;
        flex-wrap: wrap;
    }
}

/* 动画 */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 240, 255, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 240, 255, 0.6); }
}

.phone-mockup {
    animation: float 6s ease-in-out infinite;
}

.feature-card:hover .feature-glow {
    animation: glow 2s ease-in-out infinite;
}