/* 黄瓜视频官网样式 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #000;
    overflow-x: hidden;
}

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

/* 公告栏样式 */
.announcement-bar {
    background: linear-gradient(135deg, #4CAF50 0%, #8BC34A 100%);
    color: white;
    padding: 12px 0;
    position: relative;
    overflow: hidden;
}

.announcement-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.announcement-text {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.announcement-icon {
    font-size: 1.2em;
    animation: bounce 2s infinite;
}

.keyword-highlight {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    animation: pulse 2s infinite;
}

.announcement-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.announcement-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 48px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
}

.brand-icon {
    font-size: 2em;
    animation: rotate 8s linear infinite;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.5em;
    font-weight: 700;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-subtitle {
    font-size: 0.8em;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

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

.nav-link {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #4CAF50;
    background: rgba(76, 175, 80, 0.1);
    transform: translateY(-2px);
}

.nav-actions .download-btn {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9em;
}

.nav-actions .download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(76, 175, 80, 0.4);
}

/* 英雄区域样式 */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, #000 0%, #1a1a2e 50%, #16213e 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 120px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(76, 175, 80, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(139, 195, 74, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    min-height: 70vh;
}

.hero-text {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 30px;
    border: 1px solid rgba(76, 175, 80, 0.3);
    animation: fadeInUp 1s ease;
}

.badge-icon {
    font-size: 1.1em;
}

.hero-title {
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s both;
}

.title-main {
    display: block;
    font-size: 4em;
    font-weight: 800;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.title-sub {
    display: block;
    font-size: 1.5em;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
}

.hero-description {
    font-size: 1.1em;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
    animation: fadeInUp 1s ease 0.6s both;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.stat-number {
    display: block;
    font-size: 2.5em;
    font-weight: 700;
    color: #4CAF50;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.7);
}

.hero-actions {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1s ease 0.8s both;
}

.cta-primary,
.cta-secondary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    position: relative;
}

.cta-primary {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
}

.cta-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-primary:hover,
.cta-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.btn-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ff4444;
    color: white;
    font-size: 0.7em;
    padding: 2px 6px;
    border-radius: 8px;
    font-weight: 600;
}

.btn-icon {
    font-size: 1.2em;
}

/* 应用展示样式 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    animation: fadeInUp 1s ease 1s both;
}

.app-showcase {
    position: relative;
    z-index: 2;
}

.device-mockup {
    position: relative;
}

.device-frame {
    width: 400px;
    height: 600px;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    border-radius: 30px;
    padding: 20px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
    position: relative;
}

.device-frame::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 6px;
    background: #34495e;
    border-radius: 3px;
}

.device-screen {
    width: 100%;
    height: 100%;
    background: #1a1a2e;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.interface-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-controls {
    display: flex;
    gap: 8px;
}

.control-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control-dot.red { background: #ff5f56; }
.control-dot.yellow { background: #ffbd2e; }
.control-dot.green { background: #27ca3f; }

.header-title {
    color: white;
    font-weight: 600;
    font-size: 0.9em;
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: rgba(255, 255, 255, 0.8);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8em;
}

.interface-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 20px;
}

.video-timeline {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-track {
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    position: relative;
    margin-bottom: 15px;
    overflow: hidden;
}

.timeline-clip {
    position: absolute;
    top: 5px;
    height: 50px;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.7em;
    font-weight: 600;
}

.timeline-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.timeline-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: rgba(255, 255, 255, 0.8);
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

.timeline-btn:hover {
    background: rgba(76, 175, 80, 0.3);
    color: #4CAF50;
}

.play-btn {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
}

.timeline-time {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8em;
    font-family: 'Courier New', monospace;
    margin-left: auto;
}

.video-preview {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.preview-screen {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    border-radius: 8px;
    position: relative;
    margin-bottom: 15px;
    overflow: hidden;
}

.preview-content {
    width: 100%;
    height: 100%;
    position: relative;
}

.preview-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.play-indicator {
    font-size: 2em;
    color: white;
    opacity: 0.8;
    animation: pulse 2s infinite;
}

.preview-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: rgba(255, 255, 255, 0.8);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: rgba(76, 175, 80, 0.3);
    color: #4CAF50;
    transform: scale(1.1);
}

.showcase-features {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-item {
    position: absolute;
    font-size: 2em;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-item:nth-child(1) { top: 20%; left: 10%; }
.floating-item:nth-child(2) { top: 60%; left: 5%; }
.floating-item:nth-child(3) { top: 30%; right: 10%; }
.floating-item:nth-child(4) { top: 70%; right: 15%; }
.floating-item:nth-child(5) { top: 10%; right: 30%; }
.floating-item:nth-child(6) { top: 80%; left: 20%; }

/* 功能特色样式 */
.features-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.section-title {
    font-size: 3em;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.2em;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-showcase {
    margin-top: 60px;
}

.feature-tabs {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.05);
    padding: 5px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 60px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    padding: 12px 24px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    font-size: 0.95em;
}

.tab-btn.active,
.tab-btn:hover {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    transform: translateY(-2px);
}

.feature-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeInUp 0.6s ease;
}

.tab-panel.active {
    display: block;
}

.feature-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.demo-visual {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-interface,
.recording-interface,
.effects-interface,
.collab-interface {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-header,
.recording-header,
.effects-header,
.collab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ai-header h3,
.recording-header h3,
.effects-header h3,
.collab-header h3 {
    color: white;
    font-size: 1.2em;
    font-weight: 600;
}

.ai-status,
.recording-status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-dot.online {
    background: #4CAF50;
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.5);
}

.status-dot.recording {
    background: #ff4444;
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.5);
}

.ai-suggestions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.suggestion-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.suggestion-item:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
}

.suggestion-icon {
    font-size: 1.5em;
    color: #4CAF50;
    flex-shrink: 0;
}

.suggestion-text {
    flex: 1;
}

.suggestion-text h4 {
    color: white;
    font-size: 1em;
    margin-bottom: 5px;
}

.suggestion-text p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.suggestion-btn {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85em;
    transition: all 0.3s ease;
}

.suggestion-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.recording-preview {
    margin-bottom: 20px;
}

.preview-window {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    border-radius: 10px;
    position: relative;
    margin-bottom: 15px;
    overflow: hidden;
}

.recording-overlay {
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rec-indicator {
    background: rgba(255, 68, 68, 0.9);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: 600;
    animation: pulse 1s infinite;
}

.rec-timer {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-family: 'Courier New', monospace;
}

.recording-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.rec-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: rgba(255, 255, 255, 0.8);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1em;
    transition: all 0.3s ease;
}

.rec-btn:hover {
    background: rgba(76, 175, 80, 0.3);
    color: #4CAF50;
    transform: scale(1.1);
}

.recording-settings {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 20px;
}

.setting-item {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85em;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.effects-search {
    display: flex;
    gap: 10px;
    align-items: center;
}

.effects-search input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    outline: none;
    font-size: 0.9em;
    width: 200px;
}

.effects-search input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-btn {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1em;
}

.effects-categories {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.category-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 15px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.85em;
    transition: all 0.3s ease;
}

.category-btn.active,
.category-btn:hover {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border-color: transparent;
}

.effects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.effect-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    cursor: pointer;
}

.effect-item:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-3px);
}

.effect-preview {
    font-size: 2em;
    margin-bottom: 8px;
}

.effect-name {
    color: white;
    font-size: 0.85em;
    font-weight: 500;
}

.effect-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    color: white;
    font-size: 0.6em;
    padding: 2px 6px;
    border-radius: 8px;
    font-weight: 600;
}

.effect-badge:contains("NEW") { background: #ff4444; }
.effect-badge:contains("HOT") { background: #ff6b00; }
.effect-badge:contains("PRO") { background: #4CAF50; }
.effect-badge:contains("FREE") { background: #00ff88; }
.effect-badge:contains("PREMIUM") { background: #8BC34A; }

.team-members {
    display: flex;
    gap: 5px;
    align-items: center;
}

.member-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8em;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.member-add {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.member-add:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.5);
    color: #4CAF50;
}

.collab-workspace {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.workspace-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.workspace-item:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
}

.item-icon {
    font-size: 1.5em;
    color: #4CAF50;
    flex-shrink: 0;
}

.item-info {
    flex: 1;
}

.item-name {
    color: white;
    font-weight: 500;
    margin-bottom: 3px;
    font-size: 0.95em;
}

.item-status {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8em;
}

.item-actions {
    display: flex;
    gap: 8px;
}

.action-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 12px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.8em;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.5);
    color: #4CAF50;
}

.demo-info h3 {
    font-size: 2em;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.demo-description {
    font-size: 1.1em;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 30px;
}

.demo-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.demo-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-feature .feature-icon {
    font-size: 1.3em;
    color: #4CAF50;
}

.demo-feature .feature-text {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.9em;
}

/* 下载中心样式 */
.download-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #16213e 0%, #0f0f23 100%);
}

.download-content {
    margin-top: 60px;
}

.download-platforms {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.platform-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.platform-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.platform-card.featured {
    border-color: rgba(76, 175, 80, 0.5);
    background: rgba(76, 175, 80, 0.1);
    transform: scale(1.05);
}

.platform-icon {
    font-size: 4em;
    margin-bottom: 20px;
    color: #4CAF50;
}

.platform-name {
    font-size: 1.8em;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.platform-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
    line-height: 1.6;
}

.platform-downloads {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

.download-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.download-link:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.5);
    transform: translateY(-2px);
}

.link-icon {
    font-size: 2em;
    flex-shrink: 0;
}

.link-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.link-title {
    font-weight: 600;
    font-size: 1.1em;
}

.link-subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.platform-stats {
    display: flex;
    justify-content: space-around;
    gap: 20px;
}

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

.platform-stats .stat-number {
    display: block;
    font-size: 1.8em;
    font-weight: 700;
    color: #4CAF50;
    margin-bottom: 5px;
}

.platform-stats .stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.download-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
}

.info-section h3 {
    font-size: 1.8em;
    font-weight: 700;
    color: white;
    margin-bottom: 30px;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.requirement-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
}

.requirement-item h4 {
    color: white;
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 15px;
}

.requirement-item ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.requirement-item li {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95em;
    padding-left: 20px;
    position: relative;
}

.requirement-item li::before {
    content: '•';
    color: #4CAF50;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.version-info {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
}

.version-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.version-item:last-child {
    border-bottom: none;
}

.version-label {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.version-number,
.version-date,
.version-size {
    color: white;
    font-weight: 600;
}

.changelog {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
}

.changelog h4 {
    color: white;
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 15px;
}

.changelog ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.changelog li {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95em;
    padding-left: 20px;
    position: relative;
}

.changelog li::before {
    content: '✓';
    color: #4CAF50;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 用户评价样式 */
.reviews-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
}

.reviews-showcase {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-top: 60px;
}

.reviews-stats {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 30px;
    height: fit-content;
}

.stats-overview {
    text-align: center;
    margin-bottom: 40px;
}

.overall-rating {
    margin-bottom: 30px;
}

.rating-score {
    font-size: 4em;
    font-weight: 800;
    color: #4CAF50;
    margin-bottom: 10px;
}

.rating-stars {
    font-size: 1.5em;
    color: #ffd700;
    margin-bottom: 10px;
}

.rating-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1em;
}

.rating-distribution {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rating-bar {
    display: flex;
    align-items: center;
    gap: 15px;
}

.bar-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9em;
    min-width: 30px;
}

.bar-track {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.bar-percent {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8em;
    min-width: 35px;
    text-align: right;
}

.feature-ratings {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}

.feature-ratings h4 {
    color: white;
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 20px;
}

.feature-rating {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-rating:last-child {
    border-bottom: none;
}

.feature-name {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95em;
}

.feature-score {
    display: flex;
    align-items: center;
    gap: 10px;
}

.score-stars {
    color: #ffd700;
    font-size: 0.9em;
}

.score-number {
    color: white;
    font-weight: 600;
    font-size: 0.9em;
}

.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.review-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    transition: all 0.3s ease;
}

.review-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.review-card.featured {
    border-color: rgba(76, 175, 80, 0.5);
    background: rgba(76, 175, 80, 0.1);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.reviewer-info {
    display: flex;
    gap: 15px;
    align-items: center;
}

.reviewer-avatar img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #4CAF50;
}

.reviewer-name {
    font-size: 1.2em;
    font-weight: 600;
    color: white;
    margin-bottom: 5px;
}

.reviewer-title {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
    margin-bottom: 8px;
}

.reviewer-stats {
    display: flex;
    gap: 15px;
}

.stat {
    background: rgba(76, 175, 80, 0.2);
    color: #4CAF50;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.75em;
    font-weight: 500;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.review-meta {
    text-align: right;
}

.review-rating {
    color: #ffd700;
    font-size: 1.1em;
    margin-bottom: 5px;
}

.review-date {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85em;
}

.review-content {
    margin-bottom: 25px;
}

.review-content p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    font-size: 1.05em;
}

.review-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.review-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(139, 195, 74, 0.2);
    color: #8BC34A;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 500;
    border: 1px solid rgba(139, 195, 74, 0.3);
}

.review-actions {
    display: flex;
    gap: 15px;
}

.review-actions .action-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
    padding: 6px 12px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.85em;
    transition: all 0.3s ease;
}

.review-actions .action-btn:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.5);
    color: #4CAF50;
}

.reviews-summary {
    margin-top: 60px;
    text-align: center;
}

.reviews-summary h3 {
    color: white;
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 40px;
}

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

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.highlight-item:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-5px);
}

.highlight-icon {
    font-size: 2em;
    color: #4CAF50;
}

.highlight-text {
    flex: 1;
    color: white;
    font-weight: 500;
    font-size: 1.1em;
}

.highlight-percent {
    color: #8BC34A;
    font-weight: 700;
    font-size: 1.2em;
}

/* 技术支持样式 */
.support-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.support-content {
    margin-top: 60px;
}

.support-channels {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.channel-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.channel-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.channel-icon {
    font-size: 3em;
    margin-bottom: 20px;
    color: #4CAF50;
}

.channel-name {
    font-size: 1.3em;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.channel-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
    line-height: 1.6;
    font-size: 0.95em;
}

.channel-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.status-text {
    color: #4CAF50;
    font-weight: 500;
    font-size: 0.9em;
}

.channel-info {
    margin-bottom: 20px;
}

.info-text {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-family: 'Courier New', monospace;
}

.channel-button {
    width: 100%;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.channel-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(76, 175, 80, 0.4);
}

.support-resources {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.resource-section h3 {
    font-size: 1.8em;
    font-weight: 700;
    color: white;
    margin-bottom: 30px;
}

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

.resource-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.resource-item:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateY(-3px);
}

.resource-icon {
    font-size: 2em;
    color: #4CAF50;
    flex-shrink: 0;
}

.resource-info h4 {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 5px;
}

.resource-info p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.community-section h3 {
    font-size: 1.8em;
    font-weight: 700;
    color: white;
    margin-bottom: 30px;
}

.community-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 30px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.community-stat .stat-number {
    display: block;
    font-size: 2em;
    font-weight: 700;
    color: #4CAF50;
    margin-bottom: 5px;
}

.community-stat .stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.community-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.community-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.community-link:hover {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
    transform: translateX(5px);
}

.link-icon {
    font-size: 1.5em;
    color: #4CAF50;
}

.link-text {
    font-weight: 500;
}

/* 关于我们样式 */
.about-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #16213e 0%, #0f0f23 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-top: 60px;
}

.about-title {
    font-size: 3em;
    font-weight: 700;
    color: white;
    margin-bottom: 30px;
}

.about-description {
    font-size: 1.2em;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 50px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.about-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.about-feature .feature-icon {
    font-size: 2em;
    color: #4CAF50;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 1.3em;
    font-weight: 600;
    color: white;
    margin-bottom: 10px;
}

.feature-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.about-stats {
    display: flex;
    justify-content: center;
    align-items: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.about-stats .stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.about-stats .stat-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.about-stats .stat-icon {
    font-size: 3em;
    color: #4CAF50;
    margin-bottom: 15px;
}

.about-stats .stat-number {
    font-size: 2.5em;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.about-stats .stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1em;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #0f0f23 0%, #000 100%);
    color: white;
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5em;
    font-weight: 700;
}

.brand-icon {
    font-size: 1.2em;
}

.brand-name {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    font-size: 1em;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 1.2em;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link:hover {
    background: rgba(76, 175, 80, 0.2);
    border-color: rgba(76, 175, 80, 0.5);
    color: #4CAF50;
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1.2em;
    font-weight: 600;
    margin-bottom: 25px;
    color: #4CAF50;
}

.link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.link-list a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95em;
}

.link-list a:hover {
    color: #4CAF50;
    padding-left: 5px;
}

.footer-newsletter {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.newsletter-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    font-size: 0.95em;
}

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

.newsletter-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 16px;
    border-radius: 20px;
    outline: none;
    font-size: 0.9em;
}

.newsletter-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-button {
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.newsletter-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
}

.newsletter-note {
    display: flex;
    align-items: center;
    gap: 8px;
}

.note-icon {
    color: #4CAF50;
}

.note-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8em;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9em;
}

.footer-legal {
    display: flex;
    gap: 25px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

.footer-legal a:hover {
    color: #4CAF50;
}

/* 返回顶部和浮动按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2em;
    font-weight: 600;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 5px 20px rgba(76, 175, 80, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(76, 175, 80, 0.6);
}

.floating-actions {
    position: fixed;
    bottom: 100px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}

.floating-btn {
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(10px);
}

.floating-btn:hover {
    background: rgba(76, 175, 80, 0.8);
    border-color: rgba(76, 175, 80, 0.5);
    transform: scale(1.1);
}

.btn-tooltip {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.8em;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.floating-btn:hover .btn-tooltip {
    opacity: 1;
    visibility: visible;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes pulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(120deg);
    }
    66% {
        transform: translateY(10px) rotate(240deg);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-demo {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .download-platforms {
        grid-template-columns: 1fr;
    }
    
    .platform-card.featured {
        transform: none;
    }
    
    .reviews-showcase {
        grid-template-columns: 1fr;
    }
    
    .support-channels {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .title-main {
        font-size: 3em;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-tabs {
        flex-direction: column;
        max-width: none;
    }
    
    .demo-features {
        grid-template-columns: 1fr;
    }
    
    .download-info {
        grid-template-columns: 1fr;
    }
    
    .requirements-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-highlights {
        grid-template-columns: 1fr;
    }
    
    .support-channels {
        grid-template-columns: 1fr;
    }
    
    .support-resources {
        grid-template-columns: 1fr;
    }
    
    .resource-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .title-main {
        font-size: 2.5em;
    }
    
    .section-title {
        font-size: 2.5em;
    }
    
    .device-frame {
        width: 300px;
        height: 450px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
}