:root {
    /* 主色调 - 天蓝色系 */
    --primary-blue: #4FC3F7;
    --primary-blue-light: #81D4FA;
    --primary-blue-dark: #29B6F6;
    --primary-blue-gradient: linear-gradient(135deg, #4FC3F7 0%, #29B6F6 100%);
    
    /* 天蓝色系（原金色位置） */
    --gold: #4FC3F7;
    --gold-light: #81D4FA;
    --gold-dark: #29B6F6;
    --gold-gradient: linear-gradient(135deg, #4FC3F7 0%, #29B6F6 100%);
    
    /* 辅助色 - 土金色 */
    --cyan: #B8860B;
    --cyan-light: #DAA520;
    
    /* 背景色 */
    --bg-dark: #0A1628;
    --bg-dark-light: #0F1D32;
    --bg-card: rgba(30, 136, 229, 0.08);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    /* 文字色 */
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* 边框和阴影 */
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 30px rgba(79, 195, 247, 0.3);
    --shadow-gold: 0 0 30px rgba(79, 195, 247, 0.2);
    
    /* 间距 */
    --section-padding: 100px;
    --container-max-width: 1200px;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family:"微软雅黑", -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
	padding:18px 0;
}

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

.logo-icon {
    width: 56px;
    height: 56px;
    background: var(--gold-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--bg-dark);
    box-shadow: var(--shadow-gold);
}
.logo-icon img {
	width:100%;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, var(--gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 18px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* 导航栏语言选择器 */
.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
	justify-content: center;
    gap: 8px;
    padding: 0 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: normal;
    cursor: pointer;
    transition: all 0.3s ease;
	height: 48px;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.lang-btn i:first-child {
    font-size: 16px;
    color: var(--gold);
}

.lang-btn i:last-child {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.lang-btn.active i:last-child {
    transform: rotate(135deg);
}

.fa-globe {
	width:16px;
	height:16px;
}
.fa-globe img {
	width:100%;
}

.fa-chevron-down {
	width: 9px;  
    height: 9px;  
    border-style: solid;  
    border-width: 1px 1px 0 0;  
    border-color: #4FC3F7;  
    -webkit-transform-origin: 75% 25%;  
    -webkit-transform: rotateZ(45deg);  
    -webkit-transition: 100ms ease-in .1s;  
    transition: 100ms ease-in .1s;
	margin-top: 7px;
}

.fa-download {
	width:22px;
	height:22px;
}
.fa-download img {
	width:100%;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 200px;
    max-height: 320px;
    overflow-y: auto;
    background: var(--bg-dark-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 100;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown::-webkit-scrollbar {
    width: 6px;
}

.lang-dropdown::-webkit-scrollbar-track {
    background: transparent;
}

.lang-dropdown::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-option:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.lang-option.active {
    color: var(--gold);
}

.lang-option i {
    font-size: 12px;
    color: var(--gold);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 24px;
    background: var(--gold-gradient);
    color:#ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: normal;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-gold);
	height:48px;
	justify-content: center;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    width: 28px;
    height: 20px;
    position: relative;
    cursor: pointer;
    padding: 0;
}

.menu-icon-bar {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.menu-icon-bar:nth-child(1) {
    top: 0;
}

.menu-icon-bar:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-icon-bar:nth-child(3) {
    bottom: 0;
}

/* 菜单展开时变成叉 */
.mobile-menu-btn.active .menu-icon-bar:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}

.mobile-menu-btn.active .menu-icon-bar:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .menu-icon-bar:nth-child(3) {
    bottom: 50%;
    transform: translateY(50%) rotate(-45deg);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--bg-dark-light);
    z-index: 1001;
    padding: 24px;
    transition: right 0.3s ease;
    border-left: 1px solid var(--border-color);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-header span {
    font-size: 18px;
    font-weight: 600;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

.mobile-menu-links {
    margin-bottom: 12px;
	display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.mobile-nav-link {
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-nav-link:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.mobile-download {
    width: 100%;
    justify-content: center;
}

.mobile-language-selector {
    margin-bottom: 24px;
    position: relative;
}

.mobile-lang-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-lang-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.mobile-lang-btn i.mobile-globe-icon {
    width:20px;
	height:20px;
}
.mobile-lang-btn i.mobile-globe-icon img {
	width:100%;
}
.mobile-chevron-icon {
	width: 9px;
    height: 9px;
    border-style: solid;
    border-width: 1px 1px 0 0;
    border-color: #4FC3F7;
    -webkit-transform-origin: 75% 25%;
    -webkit-transform: rotateZ(45deg);
    -webkit-transition: 100ms ease-in .1s;
    transition: 100ms ease-in .1s;
    margin-top: 7px;
}

.mobile-lang-btn span {
    flex: 1;
    text-align: left;
}

.mobile-lang-btn i:last-child {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.mobile-lang-btn.active i.mobile-chevron-icond {
    transform: rotate(135deg);
}

.mobile-lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-dark-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 10;
	max-height: 200px;
	overflow-y: auto;
}

.mobile-lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-lang-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-lang-option:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.mobile-lang-option.active {
    color: var(--gold);
}

.mobile-lang-option i {
    width:20px;
	height:20px;
    color: var(--gold);
}
.mobile-lang-option i img {
	width:100%;
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   Hero区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-blue);
    top: -200px;
    right: -100px;
    animation: float 20s infinite ease-in-out;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--gold);
    bottom: -100px;
    left: -100px;
    animation: float 15s infinite ease-in-out reverse;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--cyan);
    top: 50%;
    left: 30%;
    animation: float 18s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 16px;
    color: var(--gold-light);
    margin-bottom: 24px;
}

.hero-badge i {
    color: var(--cyan);
	width:24px;
	height:24px;
}
.hero-badge i img {
	width:100%;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
}

.hero-title .highlight {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 16px;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: 25px;
}

.btn-gold {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--gold-gradient);
    color: var(--bg-dark);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(79, 195, 247, 0.4);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    border-color: var(--gold);
    background: rgba(255, 215, 0, 0.1);
}

.btn-large {
    padding: 16px 40px;
    font-size: 20px;
	border-radius: 40px;
}

.btn-large .fa-download, .btn-large .fa-play-circle {
	width:28px;
	height:28px;
}
.btn-large .fa-play-circle img {
	width:100%;
	height:100%;
}

/* ========================================
   产品简介
   ======================================== */
.product-intro {
    padding: 80px 0;
    background: var(--bg-dark);
}

.intro-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.intro-icon {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 100%);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: #fff;
    transform: rotate(45deg);
}

.intro-icon i {
    transform: rotate(-45deg);
}

.intro-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
}

.intro-left {
    padding-left: 20px;
}

.intro-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.intro-header-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}
.intro-header-icon img {
	width:64%;
}

.intro-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.intro-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.intro-features li {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 16px;
    color: var(--text-secondary);
}

.intro-check {
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #fff;
    flex-shrink: 0;
}
.intro-check img {
	width:56%;
}

.intro-right {
    display: flex;
    justify-content: center;
    align-items: center;
	width:600px;
}

.intro-image {
    position: relative;
    width: 100%;
}
.intro-image img {
	width:100%;
}

.folder-icon {
    position: absolute;
    width: 180px;
    height: 140px;
    background: linear-gradient(135deg, #4A90E2 0%, #5B9BD5 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: #fff;
    bottom: 20px;
    right: 20px;
    box-shadow: 0 20px 40px rgba(74, 144, 226, 0.3);
}

.lock-overlay {
    position: absolute;
    width: 60px;
    height: 60px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #4A90E2;
    bottom: -10px;
    right: -10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.doc-icon {
    position: absolute;
    width: 100px;
    height: 130px;
    background: linear-gradient(135deg, #E8F4FD 0%, #D6E9F8 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: #4A90E2;
    top: 20px;
    left: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: rotate(-15deg);
}

/* ========================================
   加密类型展示
   ======================================== */
.encryption-types {
    padding: 80px 0;
    background: var(--bg-dark);
}

.encryption-title {
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 50px;
}

.encryption-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.encryption-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px 24px;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.encryption-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.encryption-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 20px;
    color: white;
}
.encryption-icon img {
	width:60%;
}

.encryption-icon.blue {
    background: linear-gradient(135deg, #4A90E2 0%, #5B9BD5 100%);
    box-shadow: 0 8px 20px rgba(74, 144, 226, 0.4);
}

.encryption-icon.purple {
    background: linear-gradient(135deg, #7B68EE 0%, #9370DB 100%);
    box-shadow: 0 8px 20px rgba(123, 104, 238, 0.4);
}

.encryption-icon.pink {
    background: linear-gradient(135deg, #FF6B9D 0%, #FF8FAB 100%);
    box-shadow: 0 8px 20px rgba(255, 107, 157, 0.4);
}

.encryption-icon.orange {
    background: linear-gradient(135deg, #FFB347 0%, #FFCC99 100%);
    box-shadow: 0 8px 20px rgba(255, 179, 71, 0.4);
}

.encryption-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.encryption-list {
    list-style: none;
    text-align: left;
}

.encryption-list li {
    font-size: 16px;
    color: var(--text-secondary);
    padding: 6px 0;
    position: relative;
    padding-left: 12px;
}

.encryption-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.encryption-formats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.format-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.format-item:hover {
    transform: translateY(-5px);
}

.format-item i {
	display: flex;
	justify-content: center;
	align-items: center;
    width:72px;
	height:72px;
    transition: all 0.3s ease;
}
.format-item i img {
	width:90%;
}

.format-item:nth-child(1) i {
    color: #2B579A;
}

.format-item:nth-child(2) i {
    color: #217346;
}

.format-item:nth-child(3) i {
    color: #D24726;
}

.format-item:nth-child(4) i {
    color: #999;
}

.format-item:nth-child(5) i {
    color: #E74C3C;
}

.format-item:nth-child(6) i {
    color: #FF6B35;
}

.format-item:nth-child(7) i {
    color: #E34C26;
}

.format-item span {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Hero视觉区域 */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    width: 320px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.card-header i {
    color: var(--gold);
	width:30px;
	height:30px;
}
.card-header i img {
	width:100%;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    margin-bottom: 10px;
}

.file-item i:first-child {
    color: var(--primary-blue-light);
	width:24px;
	height:24px;
}
.file-item i:first-child img {
	width:100%;
}

.file-item span {
    flex: 1;
    font-size: 14px;
}

.lock-icon {
    color: var(--gold);
	width:20px;
	height:20px;
}
.lock-icon img {
	width:100%;
}

.encryption-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    width: 10px;
    height: 10px;
    background: #4CAF50;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.floating-icons {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.float-icon {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--gold);
    animation: float-icon 6s infinite ease-in-out;
}

.float-icon img {
	width:56%;
}

.icon-1 {
    top: 10%;
    right: 0;
    animation-delay: 0s;
}

.icon-2 {
    bottom: 20%;
    left: -20px;
    animation-delay: 2s;
}

.icon-3 {
    top: 50%;
    right: -30px;
    animation-delay: 4s;
}

@keyframes float-icon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* ========================================
   核心功能
   ======================================== */
.features {
    padding: var(--section-padding) 0;
    background: var(--bg-dark-light);
}

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

.section-header.light {
    color: var(--text-primary);
}

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 14px;
    color: var(--gold-light);
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(30, 136, 229, 0.3);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 24px;
    transition: all 0.3s ease;
}
.feature-icon img {
	width:64%;
}

.feature-icon.blue {
    background: rgba(30, 136, 229, 0.15);
    color: var(--primary-blue-light);
}

.feature-icon.gold {
    background: rgba(255, 215, 0, 0.15);
    color: var(--gold);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   解决方案
   ======================================== */
.solutions {
    padding: var(--section-padding) 0;
    background: var(--bg-dark);
}

.solutions-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 30px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--primary-blue-gradient);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.tab-btn i {
	width:28px;
	height:28px;
}
.tab-btn i img {
	width:100%;
}

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.5s ease;
}

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

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

.solution-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 50px;
    align-items: center;
}

.solution-image {
    display: flex;
    justify-content: center;
    align-items: center;
	width: 450px;
}
.solution-image img {
	width:100%;
}

.solution-icon-large {
    width: 200px;
    height: 200px;
    background: var(--primary-blue-gradient);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: white;
    box-shadow: var(--shadow-glow);
}

.solution-info h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.solution-info > p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.solution-features {
    list-style: none;
}

.solution-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text-secondary);
}

.solution-features li i {
    width:18px;
	height:18px;
}
.solution-features li i img {
	width:100%;
}

/* ========================================
   安全保障 - 安全加密无法可解
   ======================================== */
.security {
    padding: var(--section-padding) 0;
    background: var(--bg-dark-light);
}

.security-main-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 50px;
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 40px;
}

.security-left {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.security-tab {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    padding: 20px;
    background: var(--bg-glass);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.security-tab.active {
    background: rgba(79, 195, 247, 0.1);
    border: 1px solid var(--primary-blue);
    box-shadow: 0 4px 20px rgba(79, 195, 247, 0.2);
}

.security-tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.security-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #4FC3F7 0%, #29B6F6 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    flex-shrink: 0;
    transition: all 0.3s ease;
}
.security-icon img {
	width:64%;
}

.security-tab.active .security-icon {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(79, 195, 247, 0.4);
}

.security-text h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.security-tab.active .security-text h3 {
    color: var(--primary-blue-light);
}

.security-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    max-height: 100px;
    opacity: 1;
    transition: all 0.3s ease;
}

.security-tab.active .security-text p {
    max-height: 100px;
    opacity: 1;
}

.security-right {
    position: relative;
}

.security-panel {
    display: none;
    animation: fadeInUp 0.4s ease;
}

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

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

.security-screenshot {
    
}

.security-screenshot img {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 8px;
}

.security-download {
    text-align: center;
}

.btn-security-download {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 48px;
    background: linear-gradient(135deg, #4FC3F7 0%, #29B6F6 100%);
    color: var(--bg-dark);
    border: none;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(79, 195, 247, 0.4);
}

.btn-security-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(79, 195, 247, 0.5);
}
.btn-security-download i {
   width:30px;
	height:30px;
}
.btn-security-download i img {
	width:100%;
}

/* ========================================
   下载区域
   ======================================== */
.download {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-blue-dark) 100%);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.download .container {
    position: relative;
    z-index: 1;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.download-info h2 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.download-info > p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.download-stats {
    display: flex;
    gap: 48px;
}

.dl-stat {
    display: flex;
    flex-direction: column;
}

.dl-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--gold);
}

.dl-label {
    font-size: 16px;
    color: var(--text-muted);
}

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

.platform-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

.platform-card:hover {
    border-color: var(--gold);
    transform: translateY(-5px);
}

.platform-card i {
	display: block;
    margin-bottom: 15px;
	width:56px;
	height:56px;
}

.platform-card i img {
	width:100%;
}

.platform-card span {
    display: block;
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 16px;
}

.btn-download {
    width: 100%;
    padding: 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: var(--gold-gradient);
    border-color: var(--gold);
    color: var(--bg-dark);
}

.web-card i {
    color: var(--primary-blue-light);
}

.btn-experience {
    background:#fff;
    border-color: var(--primary-blue);
    color:#0099FF;
}

.btn-experience:hover {
    background: linear-gradient(135deg, #29B6F6 0%, #0288D1 100%);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    padding: 50px 0 20px;
    background: var(--bg-dark);
    border-top: 1px solid var(--border-color);
}

/* 底部多语言展示区域 */
.footer-languages {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.footer-lang-title {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.footer-lang-title i {
	width: 24px;
	height:24px;
    color: var(--gold);
}

.footer-lang-title i img {
	width:100%;
}

.footer-lang-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-lang-item {
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-lang-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.footer-lang-item.active {
    background: var(--primary-blue-gradient);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

/* 移动端底部语言展开/收起 */
.footer-lang-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-top: 16px;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.footer-lang-toggle:hover {
    background: var(--bg-glass);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.footer-lang-toggle i {
    width: 12px;
    height: 12px;
    transition: transform 0.3s ease;
}

.footer-lang-toggle i img {
    width: 100%;
    height: 100%;
}

.footer-lang-toggle.active i {
    transform: rotate(180deg);
}

.footer-lang-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    transition: max-height 0.3s ease;
}

/* 移动端默认只显示两行 */
@media (max-width: 768px) {
    .footer-lang-toggle {
        display: flex;
    }

    .footer-lang-list {
        max-height: 90px; /* 大约两行的高度 */
        overflow: hidden;
    }

    .footer-lang-list.expanded {
        max-height: 600px; /* 足够显示所有语言 */
    }
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
    margin-bottom: 20px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo i {
    width:48px;
	height:48px;
    color: var(--gold);
}
.footer-logo i img {
	width:100%;
}

.footer-logo span {
    font-size: 20px;
    font-weight: 700;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.link-group h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.link-group a {
    display: block;
    padding: 8px 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.link-group a:hover {
    color: var(--gold-light);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
	text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
	text-align: center;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 18px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--bg-dark);
}

/* ========================================
   返回顶部
   ======================================== */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 50px;
    height: 50px;
    background: var(--gold-gradient);
    border: none;
    border-radius: 50%;
    color: var(--bg-dark);
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-gold);
    z-index: 999;
}
.back-to-top img {
	width:70%;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(79, 195, 247, 0.5);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 48px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .encryption-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu,
    .nav-right .btn-primary {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .solution-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .solution-features {
        display: inline-block;
        text-align: left;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .download-stats {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        max-width: 100%;
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
	.container {
		padding:0 20px;
	}
	.security-card {
		width:86%;
	}
	.icon-2 {
		left:0;
	}
	.icon-3 {
		right:0;
	}
	.intro-right {
		width:100%;
	}
	.solution-image {
		width:100%;
	}

    /* 移动端隐藏导航栏语言选择器 */
    .language-selector {
        display: none;
    }

    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-buttons {
        display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
        align-items: center;
    }
    
    .tab-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
		flex-direction: column;
		display: flex;
		gap:5px;
    }
    
    .solution-card {
        padding: 30px;
    }
    
    .solution-icon-large {
        width: 150px;
        height: 150px;
        font-size: 60px;
    }
    
    .security-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .security-main-title {
        font-size: 28px;
    }
    
    .security-right {
        order: -1;
    }
    
    .security-screenshot {
        padding: 15px;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .intro-right {
        order: -1;
    }
    
    .intro-image {
        width: 100%;
    }
    
    .folder-icon {
        width: 150px;
        height: 120px;
        font-size: 60px;
    }
    
    .doc-icon {
        width: 80px;
        height: 100px;
        font-size: 40px;
    }
    
    .intro-title {
        font-size: 26px;
		margin-bottom: 40px;
    }
    
    .intro-header h3 {
        font-size: 20px;
    }
    
    .download-platforms {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
	.hero-stats {
		gap:20px;
	}
	.stat-label {
		font-size:15px;
	}
	.encryption-types {
		padding:50px 0;
	}
	.download-info h2 {
		font-size:30px;
	}
	.dl-number {
		font-size:30px;
	}
	.footer-links {
		display:none;
	}
	.footer-lang-title {
		justify-content:center;
		align-items: center;
	}
	.navbar-content {
		padding:12px 0;
	}
	.logo-icon {
		width:48px;
		height:48px;
	}
	.footer {
		padding:30px 0 15px 0;
	}
	.footer-languages {
		border-bottom:none;
		padding-bottom: 0;
		margin-bottom: 20px;
	}
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .encryption-title {
        font-size: 20px;
    }
    
    .encryption-grid {
        grid-template-columns: 1fr;
    }
    
    .encryption-card {
        padding: 24px 20px;
    }
    
    .encryption-formats {
        gap: 16px;
        margin-top: 40px;
    }
    
    .format-item i {
        width:64px;
		height:64px;
    }
    
    .format-item span {
        font-size: 12px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-gold,
    .btn-outline {
        width: 100%;
        justify-content: center;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .security-feature {
        padding: 16px;
    }
    
    .security-tab {
        padding: 16px;
    }
    
    .security-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .security-text h3 {
        font-size: 16px;
    }
    
    .btn-security-download {
        padding: 14px 36px;
        font-size: 16px;
    }
    
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 44px;
        height: 44px;
    }
}