/* ==================== 全局样式 ==================== */
:root {
    --primary: #4A7FE9;
    --primary-dark: #2547a0;
    --primary-light: #6B9FFF;
    --secondary: #3a6dd1;
    --accent: #00D9FF;
    --bg-main: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --text: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-main);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* ==================== 骨架屏加载 ==================== */
.skeleton-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-main);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.skeleton-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.skeleton-container {
    width: 100%;
    max-width: 1400px;
    padding: 0 50px;
}

.skeleton-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    margin-bottom: 60px;
}

.skeleton-logo {
    width: 120px;
    height: 32px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 8px;
}

.skeleton-nav-items {
    display: flex;
    gap: 30px;
}

.skeleton-nav-item {
    width: 80px;
    height: 20px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 4px;
}

.skeleton-button {
    width: 120px;
    height: 40px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 8px;
}

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

.skeleton-hero-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.skeleton-badge {
    width: 200px;
    height: 36px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 50px;
}

.skeleton-title {
    width: 100%;
    height: 60px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 8px;
}

.skeleton-title.short {
    width: 80%;
}

.skeleton-text {
    width: 100%;
    height: 24px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 4px;
}

.skeleton-buttons {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.skeleton-button.large {
    width: 180px;
    height: 56px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 12px;
}

.skeleton-button.large.secondary {
    background: linear-gradient(90deg, #F1F5F9 25%, #F8FAFC 50%, #F1F5F9 75%);
    background-size: 200% 100%;
}

.skeleton-hero-visual {
    position: relative;
    height: 500px;
}

.skeleton-card-main {
    width: 100%;
    height: 400px;
    background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s ease-in-out infinite;
    border-radius: 24px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes skeletonLoading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 移动端骨架屏 */
@media (max-width: 1200px) {
    .skeleton-hero {
        grid-template-columns: 1fr;
    }
    
    .skeleton-hero-visual {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .skeleton-container {
        padding: 0 30px;
    }
    
    .skeleton-nav-items {
        display: none;
    }
    
    .skeleton-hero-visual {
        height: 300px;
    }
    
    .skeleton-card-main {
        height: 300px;
    }
    
    .skeleton-buttons {
        flex-direction: column;
    }
    
    .skeleton-button.large {
        width: 100%;
    }
}

/* ==================== 科技背景 ==================== */
.tech-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(74, 127, 233, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74, 127, 233, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.light-beams {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(74, 127, 233, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(0, 217, 255, 0.06) 0%, transparent 50%);
    animation: beamPulse 8s ease-in-out infinite;
}

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

.gradient-orbs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #4A7FE9 0%, transparent 70%);
    top: 10%;
    left: 10%;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #00D9FF 0%, transparent 70%);
    bottom: 10%;
    right: 10%;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #2547a0 0%, transparent 70%);
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(50px, -50px) scale(1.1);
    }
    50% {
        transform: translate(-30px, 50px) scale(0.9);
    }
    75% {
        transform: translate(30px, 30px) scale(1.05);
    }
}

.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

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

.navbar.scrolled {
    padding: 15px 0;
    box-shadow: var(--shadow);
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-img {
    height: 32px;
    transition: filter 0.3s ease;
}

.logo-img:hover {
    filter: drop-shadow(0 2px 8px rgba(74, 127, 233, 0.4));
}

.nav-menu {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    position: relative;
    transition: color 0.3s ease;
}

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

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

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

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

/* 语言切换按钮 */
.language-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
}

.language-button:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 2px 8px rgba(74, 127, 233, 0.15);
}

.language-icon,
.chevron-icon {
    width: 18px;
    height: 18px;
}

.chevron-icon {
    transition: transform 0.3s ease;
}

.language-button.active .chevron-icon {
    transform: rotate(180deg);
}

/* 语言切换弹窗 */
.language-modal,
.security-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.language-modal.show,
.security-modal.show {
    opacity: 1;
    visibility: visible;
}

.language-modal-content,
.security-modal-content {
    background: var(--bg-secondary);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.3s ease-out;
}

.security-modal-content {
    max-width: 900px;
    max-height: 85vh;
}

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

.language-modal-header,
.security-modal-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.language-modal-header h3,
.security-modal-header h3 {
    font-size: 1.25rem;
    color: var(--text);
    font-weight: 700;
}

.language-modal-close,
.security-modal-close {
    width: 36px;
    height: 36px;
    background: var(--bg-main);
    border: none;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.language-modal-close:hover,
.security-modal-close:hover {
    background: var(--border);
    color: var(--text);
}

.language-modal-close svg,
.security-modal-close svg {
    width: 20px;
    height: 20px;
}

.security-modal-body {
    overflow-y: auto;
    padding: 30px;
}

.security-section {
    margin-bottom: 35px;
}

.security-icon-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.security-icon-header svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.security-icon-header h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.security-section > p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
}

.security-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 35px;
}

.security-feature-item {
    padding: 25px;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.security-feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(74, 127, 233, 0.15);
}

.feature-icon-wrapper {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.feature-icon-wrapper svg {
    width: 24px;
    height: 24px;
    color: white;
}

.feature-content h5 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-section h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 15px;
}

.security-list {
    list-style: none;
    padding: 0;
}

.security-list li {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.security-cta {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid var(--border);
}

.security-cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 6px 16px rgba(74, 127, 233, 0.3);
}

.security-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.4);
}

.security-cta-button svg {
    width: 20px;
    height: 20px;
}

.language-search {
    padding: 20px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-icon {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

.language-search input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
    color: var(--text);
}

.language-search input::placeholder {
    color: var(--text-muted);
}

.language-list {
    overflow-y: auto;
    padding: 10px;
    max-height: 400px;
}

.language-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 14px 20px;
    background: transparent;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.language-item:hover {
    background: var(--bg-main);
}

.language-item.active {
    background: rgba(74, 127, 233, 0.1);
}

.language-flag {
    font-size: 24px;
}

.language-name {
    flex: 1;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}

.language-check {
    font-size: 18px;
    color: var(--primary);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.language-item.active .language-check {
    opacity: 1;
}

.btn-nav {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(74, 127, 233, 0.25);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(74, 127, 233, 0.35);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    z-index: 1;
    padding: 120px 50px 120px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-main);
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(74, 127, 233, 0.1);
    border: 1px solid rgba(74, 127, 233, 0.2);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 30px;
    animation: pulse 2s ease-in-out infinite;
}

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

.badge-icon {
    width: 18px;
    height: 18px;
}

.hero-title {
    font-size: 5.2rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 35px;
    letter-spacing: -2.8px;
    color: var(--text);
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, #4A7FE9 0%, #6B9FFF 50%, #4A7FE9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

.hero-description {
    font-size: 1.3rem;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 45px;
    max-width: 620px;
    font-weight: 400;
}

.highlight {
    color: var(--primary);
    font-weight: 600;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    border: 2px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.05), rgba(0, 217, 255, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--primary);
    box-shadow: 0 12px 32px rgba(74, 127, 233, 0.2);
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 0;
    margin-top: 0;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 36px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(74, 127, 233, 0.4);
}

.btn-primary-wide {
    min-width: 280px;
    justify-content: center;
}

.btn-primary-hero {
    padding: 22px 55px;
    font-size: 1.25rem;
    min-width: 260px;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 10px 24px rgba(74, 127, 233, 0.35);
    transition: all 0.3s ease;
}

@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 10px 28px rgba(74, 127, 233, 0.35);
    }
    50% {
        box-shadow: 0 10px 32px rgba(74, 127, 233, 0.45);
    }
}

.btn-primary-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(74, 127, 233, 0.4);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-main);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
}

.btn-security {
    min-width: 160px;
    padding: 18px 28px;
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

/* 统计和信任指示器容器 */
.stats-trust-container {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-top: 0;
}

/* 数据统计区域 */
.hero-stats-mini {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 45px;
}

.trust-indicators {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.stat-mini {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.stat-mini-icon {
    width: 20px;
    height: 20px;
    color: var(--primary);
    flex-shrink: 0;
}

.stat-mini-number {
    font-weight: 800;
    color: var(--text);
    font-size: 1.1rem;
}

.stat-mini-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.trust-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 16px 12px;
    background: rgba(74, 127, 233, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(74, 127, 233, 0.12);
    transition: all 0.3s ease;
    min-height: 75px;
    text-align: center;
}

.trust-item:hover {
    background: rgba(74, 127, 233, 0.1);
    border-color: rgba(74, 127, 233, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(74, 127, 233, 0.15);
}

.trust-item:hover svg {
    transform: scale(1.15);
    filter: drop-shadow(0 2px 6px rgba(74, 127, 233, 0.4));
}

.trust-item svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
    flex-shrink: 0;
}

/* ==================== Hero可视化区域 - 拓扑网络风格 ==================== */
.hero-visual {
    position: relative;
    height: 650px;
    animation: fadeInRight 1s ease-out 0.3s both;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -30px;
}

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

.topology-container {
    position: relative;
    width: 600px;
    height: 600px;
    overflow: visible;
    background-image: 
        linear-gradient(rgba(74, 127, 233, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(74, 127, 233, 0.06) 1px, transparent 1px),
        radial-gradient(ellipse at center, rgba(74, 127, 233, 0.03) 0%, rgba(0, 217, 255, 0.02) 50%, transparent 100%);
    background-size: 30px 30px, 30px 30px, 100% 100%;
    background-position: -1px -1px, -1px -1px, center;
    border-radius: 24px;
}

/* 背景光晕 */
.background-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, 
        rgba(74, 127, 233, 0.12) 0%, 
        rgba(107, 159, 255, 0.08) 25%,
        rgba(74, 127, 233, 0.04) 50%,
        transparent 100%);
    border-radius: 50%;
    animation: glowPulse 6s ease-in-out infinite;
    z-index: 1;
    filter: blur(40px);
}

/* 添加额外的光晕层 */
.background-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, 
        rgba(107, 159, 255, 0.15) 0%, 
        rgba(74, 127, 233, 0.1) 30%,
        transparent 60%);
    border-radius: 50%;
    animation: glowPulse 4s ease-in-out infinite reverse;
    filter: blur(30px);
}

.background-glow::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, 
        rgba(0, 217, 255, 0.12) 0%, 
        rgba(74, 127, 233, 0.08) 40%,
        transparent 70%);
    border-radius: 50%;
    animation: glowPulse 5s ease-in-out infinite;
    filter: blur(35px);
}

@keyframes glowPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.15);
        opacity: 1;
    }
}

/* 中心核心节点 */
.core-node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
}

.node-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring {
    position: absolute;
    border: 1px solid;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring-1 {
    width: 260px;
    height: 260px;
    border-color: rgba(74, 127, 233, 0.1);
    border-width: 1.5px;
    animation: ringExpand 5s ease-in-out infinite;
}

.ring-2 {
    width: 200px;
    height: 200px;
    border-color: rgba(74, 127, 233, 0.18);
    border-width: 1.5px;
    border-style: dashed;
    animation: ringRotate 25s linear infinite;
}

.ring-3 {
    width: 150px;
    height: 150px;
    border-color: rgba(74, 127, 233, 0.22);
    border-width: 2px;
    animation: ringPulse 3.5s ease-in-out infinite;
}

/* 添加更多装饰环 - 已移除 */

@keyframes ringExpand {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 1;
    }
}

@keyframes ringRotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes ringPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
        opacity: 1;
    }
}

.node-center {
    position: relative;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #4A7FE9 0%, #6B9FFF 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 35px rgba(74, 127, 233, 0.5),
                0 0 70px rgba(74, 127, 233, 0.3),
                0 0 100px rgba(74, 127, 233, 0.1),
                inset 0 0 25px rgba(255, 255, 255, 0.15);
    z-index: 2;
    animation: centerGlow 3s ease-in-out infinite;
}

@keyframes centerGlow {
    0%, 100% {
        box-shadow: 0 0 40px rgba(74, 127, 233, 0.5),
                    0 0 80px rgba(74, 127, 233, 0.3),
                    0 0 120px rgba(74, 127, 233, 0.1),
                    inset 0 0 30px rgba(255, 255, 255, 0.15);
    }
    50% {
        box-shadow: 0 0 60px rgba(74, 127, 233, 0.7),
                    0 0 100px rgba(74, 127, 233, 0.5),
                    0 0 150px rgba(74, 127, 233, 0.2),
                    inset 0 0 40px rgba(255, 255, 255, 0.2);
    }
}

.node-icon {
    width: 50px;
    height: 50px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.node-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    animation: nodePulse 2s ease-out infinite;
}

@keyframes nodePulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

/* 周围功能节点 */
.feature-nodes {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    z-index: 5;
    display: none; /* 隐藏功能节点 */
}

.feature-node {
    position: absolute;
    width: 90px;
    height: 66px;
}

/* 节点位置 - 四个方向 */
.node-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.node-2 {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
}

.node-3 {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.node-4 {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

.node-glow {
    position: absolute;
    inset: -10px;
    background: radial-gradient(circle, rgba(74, 127, 233, 0.2) 0%, transparent 70%);
    border-radius: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-node:hover .node-glow {
    opacity: 1;
}

.node-content {
    position: relative;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(74, 127, 233, 0.15);
    border-radius: 14px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: 0 8px 32px rgba(74, 127, 233, 0.1);
    transition: all 0.3s ease;
    opacity: 0.9;
}

.feature-node:hover .node-content {
    transform: scale(1.05);
    border-color: var(--primary);
    box-shadow: 0 12px 48px rgba(74, 127, 233, 0.25);
    opacity: 1;
}

.node-icon-wrapper {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    opacity: 0.85;
}

.node-icon-wrapper.success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.node-icon-wrapper.speed {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.node-icon-wrapper.secure {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.node-icon-wrapper.ai {
    background: linear-gradient(135deg, #a855f7, #9333ea);
}

.node-icon-wrapper svg {
    width: 18px;
    height: 18px;
    color: white;
}

.node-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.node-value {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--text);
    line-height: 1;
}

.node-text {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 600;
    opacity: 0.75;
}

/* 节点连接线 */
.node-connector {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    background: linear-gradient(180deg, rgba(74, 127, 233, 0.5), transparent);
    transform-origin: top center;
}

.node-1 .node-connector {
    height: 210px;
    transform: translate(-50%, calc(100% + 33px)) rotate(0deg);
}

.node-2 .node-connector {
    height: 210px;
    transform: translate(calc(40px + 45px), -50%) rotate(90deg);
    transform-origin: center left;
}

.node-3 .node-connector {
    height: 210px;
    transform: translate(-50%, calc(-100% - 33px)) rotate(180deg);
}

.node-4 .node-connector {
    height: 210px;
    transform: translate(calc(40px + 45px), -50%) rotate(-90deg);
    transform-origin: center left;
}

/* 数据流粒子 */
.data-particles {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
}

/* 添加漂浮粒子 */
.topology-container::before {
    content: '';
    position: absolute;
    width: 7px;
    height: 7px;
    background: rgba(74, 127, 233, 0.75);
    border-radius: 50%;
    top: 15%;
    left: 12%;
    box-shadow: 0 0 14px rgba(74, 127, 233, 1),
                0 0 28px rgba(74, 127, 233, 0.5);
    animation: particleFloat1 10s ease-in-out infinite;
}

.topology-container::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(0, 217, 255, 0.65);
    border-radius: 50%;
    top: 75%;
    right: 18%;
    box-shadow: 0 0 12px rgba(0, 217, 255, 0.9),
                0 0 24px rgba(0, 217, 255, 0.4);
    animation: particleFloat2 8s ease-in-out infinite;
}

@keyframes particleFloat1 {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.5;
    }
    25% {
        transform: translate(25px, -15px);
        opacity: 1;
    }
    50% {
        transform: translate(10px, 20px);
        opacity: 0.3;
    }
    75% {
        transform: translate(-15px, 8px);
        opacity: 0.7;
    }
}

@keyframes particleFloat2 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.4;
    }
    33% {
        transform: translate(-20px, 12px) scale(1.3);
        opacity: 0.9;
    }
    66% {
        transform: translate(15px, -25px) scale(0.7);
        opacity: 0.2;
    }
}

/* 新增更多漂浮粒子 */
.floating-particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 4;
}

.particle-3 {
    width: 4px;
    height: 4px;
    background: rgba(107, 159, 255, 0.6);
    top: 35%;
    right: 15%;
    box-shadow: 0 0 10px rgba(107, 159, 255, 0.8),
                0 0 18px rgba(107, 159, 255, 0.3);
    animation: particleFloat3 12s ease-in-out infinite;
}

.particle-4 {
    width: 5px;
    height: 5px;
    background: rgba(74, 127, 233, 0.65);
    bottom: 25%;
    left: 20%;
    box-shadow: 0 0 11px rgba(74, 127, 233, 0.85),
                0 0 20px rgba(74, 127, 233, 0.35);
    animation: particleFloat4 9s ease-in-out infinite;
}

.particle-5 {
    width: 4px;
    height: 4px;
    background: rgba(0, 217, 255, 0.55);
    top: 50%;
    left: 8%;
    box-shadow: 0 0 9px rgba(0, 217, 255, 0.75),
                0 0 16px rgba(0, 217, 255, 0.3);
    animation: particleFloat5 11s ease-in-out infinite;
}

@keyframes particleFloat3 {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.4;
    }
    33% {
        transform: translate(18px, -22px);
        opacity: 0.85;
    }
    66% {
        transform: translate(-12px, 15px);
        opacity: 0.25;
    }
}

@keyframes particleFloat4 {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.45;
    }
    40% {
        transform: translate(-22px, -10px) scale(1.2);
        opacity: 0.9;
    }
    80% {
        transform: translate(15px, 18px) scale(0.8);
        opacity: 0.3;
    }
}

@keyframes particleFloat5 {
    0%, 100% {
        transform: translate(0, 0);
        opacity: 0.35;
    }
    25% {
        transform: translate(20px, 12px);
        opacity: 0.8;
    }
    50% {
        transform: translate(-8px, -18px);
        opacity: 0.5;
    }
    75% {
        transform: translate(12px, -8px);
        opacity: 0.7;
    }
}

/* 格式轨道 */
.format-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 460px;
    height: 460px;
    transform: translate(-50%, -50%);
    z-index: 4;
}

.format-item {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 65px;
    height: 65px;
    margin: -32.5px 0 0 -32.5px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(74, 127, 233, 0.15);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: 0 6px 20px rgba(74, 127, 233, 0.15),
                0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.format-item:hover {
    transform: scale(1.15) translateY(-3px);
    border-color: var(--primary);
    box-shadow: 0 12px 32px rgba(74, 127, 233, 0.25),
                0 4px 12px rgba(0, 0, 0, 0.12);
    z-index: 10;
}

.format-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    transition: transform 0.3s ease;
}

.format-item:hover svg {
    transform: scale(1.1);
}

.format-item span {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.5px;
}

/* 锁定指示器 */
.lock-indicator {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.lock-indicator.locked {
    background: #4A7FE9;
    box-shadow: 0 0 10px rgba(74, 127, 233, 0.5);
}

.lock-indicator.unlocked {
    background: #4ade80;
    box-shadow: 0 0 10px rgba(74, 222, 128, 0.5);
    animation: unlockPulse 0.5s ease-out;
}

.lock-indicator svg {
    width: 12px;
    height: 12px;
    color: white;
}

@keyframes unlockPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3);
    }
    100% {
        transform: scale(1);
    }
}

/* 文件克隆元素 */
.file-clone {
    animation: none !important;
    pointer-events: none;
}

/* 处理中的文件 */
.format-item.processing,
.file-clone.processing {
    animation: processingBreath 1.5s ease-in-out infinite !important;
    filter: brightness(1.2);
}

@keyframes processingBreath {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1.5);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.7);
    }
}

/* 已解锁状态 */
.format-item.unlocked {
    border-color: #4ade80;
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.3);
}

/* 处理中的中心节点 */
.core-node.processing-active .node-center {
    animation: processingPulse 0.5s ease-in-out infinite;
}

@keyframes processingPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 30px rgba(74, 127, 233, 0.5),
                    0 0 60px rgba(74, 127, 233, 0.3),
                    inset 0 0 20px rgba(255, 255, 255, 0.1);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 40px rgba(74, 127, 233, 0.8),
                    0 0 80px rgba(74, 127, 233, 0.5),
                    inset 0 0 30px rgba(255, 255, 255, 0.2);
    }
}

/* 轨道位置 */
.orbit-1 {
    transform: rotate(0deg) translate(220px) rotate(0deg);
    animation: orbitRotate 30s linear infinite;
}

.orbit-2 {
    transform: rotate(60deg) translate(220px) rotate(-60deg);
    animation: orbitRotate 30s linear infinite;
    animation-delay: -5s;
}

.orbit-3 {
    transform: rotate(120deg) translate(220px) rotate(-120deg);
    animation: orbitRotate 30s linear infinite;
    animation-delay: -10s;
}

.orbit-4 {
    transform: rotate(180deg) translate(220px) rotate(-180deg);
    animation: orbitRotate 30s linear infinite;
    animation-delay: -15s;
}

.orbit-5 {
    transform: rotate(240deg) translate(220px) rotate(-240deg);
    animation: orbitRotate 30s linear infinite;
    animation-delay: -20s;
}

.orbit-6 {
    transform: rotate(300deg) translate(220px) rotate(-300deg);
    animation: orbitRotate 30s linear infinite;
    animation-delay: -25s;
}

@keyframes orbitRotate {
    from {
        transform: rotate(0deg) translate(220px) rotate(0deg);
    }
    to {
        transform: rotate(360deg) translate(220px) rotate(-360deg);
    }
}

/* 状态指示器 - 已移除 */
/* ==================== 通用区块样式 ==================== */
.how-it-works,
.features,
.formats,
.cta-section,
.pricing,
.download {
    position: relative;
    z-index: 1;
    padding: 120px 50px;
}

.how-it-works {
    background: var(--bg-main);
}

.features {
    background: var(--bg-secondary);
}

.formats {
    background: var(--bg-main);
}

.cta-section {
    background: var(--bg-secondary);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.section-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: var(--text);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* ==================== 工作原理 ==================== */
.steps-container {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
}

.step-line {
    position: absolute;
    top: 60px;
    left: 20%;
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 0;
}

.step-item {
    position: relative;
    text-align: center;
    z-index: 1;
}

.step-number {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 5rem;
    font-weight: 900;
    color: rgba(74, 127, 233, 0.08);
    line-height: 1;
}

.step-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}







.step-item:hover .step-icon {
    transform: translateY(-10px) scale(1.05);
    border-color: transparent;
    box-shadow: 0 16px 48px rgba(74, 127, 233, 0.3);
}

.step-icon svg {
    width: 50px;
    height: 50px;
    color: var(--primary);
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text);
}

.step-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 功能特性 ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    padding: 40px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    border: 2px solid var(--border);
    border-radius: 24px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.6s ease;
}

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

.feature-card:hover::after {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 16px 48px rgba(74, 127, 233, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.25);
    position: relative;
    z-index: 1;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
    color: var(--text);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.feature-stats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.stat-badge {
    padding: 6px 14px;
    background: rgba(74, 127, 233, 0.1);
    border: 1px solid rgba(74, 127, 233, 0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
}

/* ==================== 支持格式 ==================== */
.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.format-card {
    padding: 40px 30px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    border: 2px solid var(--border);
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
}

.format-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.05), rgba(0, 217, 255, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.format-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--primary);
    box-shadow: 0 12px 32px rgba(74, 127, 233, 0.2);
}

.format-card:hover::before {
    opacity: 1;
}

.format-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    filter: grayscale(0.3);
    transition: filter 0.3s ease;
}

.format-card:hover .format-icon {
    filter: grayscale(0);
}

.format-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.format-ext {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== 价格方案 ==================== */
.pricing {
    background: var(--bg-main);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.95));
    border: 2px solid var(--border);
    border-radius: 24px;
    padding: 50px 40px;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

/* 第一个卡片（密码恢复）- 蓝色边框 */
.pricing-card:first-of-type {
    border-color: var(--primary);
}

/* 第二个卡片（移除密码&限制）- 灰色边框 */
.pricing-card:last-of-type {
    border-color: var(--border);
}

.pricing-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.03), rgba(0, 217, 255, 0.03));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(74, 127, 233, 0.2);
}

.pricing-card:hover::before {
    opacity: 1;
}

.pricing-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.1), rgba(74, 127, 233, 0.2));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.pricing-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.pricing-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 10px;
}

.pricing-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 30px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 15px;
}

.price-currency {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--text);
    line-height: 1;
}

.price-separator {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin: 0 5px;
}

.price-usd {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.pricing-note {
    margin-bottom: 35px;
    padding-bottom: 35px;
    border-bottom: 1px solid var(--border);
}

.note-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 5px;
}

.note-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.pricing-features h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 35px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-item.disabled {
    opacity: 0.4;
}

.check-icon {
    width: 20px;
    height: 20px;
    color: var(--primary);
    flex-shrink: 0;
}

.feature-item.disabled .check-icon {
    color: var(--text-muted);
}

.file-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.feature-item.disabled .file-icon {
    color: var(--text-muted);
}

.feature-item span {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.pricing-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--bg-main);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}

.pricing-button:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.pricing-button.primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: var(--primary);
    color: white;
}

.pricing-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.3);
}

.pricing-button.recovery-button {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: var(--primary);
    color: white;
}

.pricing-button.recovery-button:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.3);
}

.pricing-button svg {
    width: 20px;
    height: 20px;
}

/* ==================== 数据安全 Section ==================== */
.security {
    padding: 120px 50px;
    background: linear-gradient(180deg, #ffffff 0%, #f8f9ff 100%);
    position: relative;
    z-index: 1;
}

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

.security-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.security-feature-item {
    background: #ffffff;
    padding: 40px 30px;
    border-radius: 20px;
    border: 2px solid rgba(74, 127, 233, 0.1);
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.security-feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 40px rgba(74, 127, 233, 0.15);
}

.security-feature-item .feature-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.security-feature-item .feature-icon-wrapper svg {
    width: 30px;
    height: 30px;
    stroke: white;
}

.security-feature-item .feature-content h5 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}

.security-feature-item .feature-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-commitment {
    background: linear-gradient(135deg, #4A7FE9 0%, #3a6dd1 100%);
    padding: 50px;
    border-radius: 24px;
    color: white;
}

.security-commitment h4 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

.commitment-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.commitment-list li {
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    font-size: 1rem;
}

.commitment-list li::before {
    content: '✓';
    display: inline-block;
    margin-right: 12px;
    color: #4ade80;
    font-weight: bold;
    font-size: 1.2rem;
}

@media (max-width: 768px) {
    .security {
        padding: 80px 20px;
    }
    
    .security-features {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .security-feature-item {
        padding: 30px 20px;
    }
    
    .security-commitment {
        padding: 30px 20px;
    }
    
    .commitment-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

/* ==================== 软件下载 ==================== */
.download {
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.3;
}

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

.download-main-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.03), rgba(0, 217, 255, 0.03));
    border: 2px solid var(--border);
    border-radius: 32px;
    padding: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(74, 127, 233, 0.1);
}

.download-main-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(74, 127, 233, 0.1) 0%, transparent 70%);
    animation: cardGlow 8s ease-in-out infinite;
}

@keyframes cardGlow {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.5; }
    50% { transform: translate(-20px, 20px) scale(1.1); opacity: 1; }
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
    position: relative;
    z-index: 1;
}

.download-feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 25px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.download-feature-item:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(74, 127, 233, 0.15);
}

.download-feature-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(74, 127, 233, 0.3);
}

.download-feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.download-feature-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.download-feature-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.download-card-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 24px;
    padding: 50px 40px;
    position: relative;
    z-index: 1;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.download-icon-large {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.1), rgba(74, 127, 233, 0.2));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    position: relative;
    box-shadow: 0 8px 24px rgba(74, 127, 233, 0.2);
}

.download-icon-large::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 24px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.download-card-main:hover .download-icon-large::before {
    opacity: 0.2;
}

.download-icon-large svg {
    width: 60px;
    height: 60px;
    color: var(--primary);
}

.download-main-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.download-main-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.download-version-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(74, 127, 233, 0.1);
    border: 1px solid rgba(74, 127, 233, 0.2);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 30px;
}

.download-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    width: 100%;
    margin-bottom: 40px;
    padding: 30px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

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

.stat-value {
    font-size: 2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.download-main-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(74, 127, 233, 0.3);
    margin-bottom: 25px;
}

.download-main-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(74, 127, 233, 0.4);
}

.download-main-button svg {
    width: 20px;
    height: 20px;
}

.download-security-note {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 50px;
    color: #059669;
    font-size: 0.9rem;
    font-weight: 600;
}

.download-security-note svg {
    width: 18px;
    height: 18px;
}

/* ==================== CTA区域 ==================== */
.cta-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 60px;
    background: linear-gradient(135deg, rgba(74, 127, 233, 0.05), rgba(0, 217, 255, 0.05));
    border: 1px solid var(--border);
    border-radius: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    margin-bottom: 50px;
}

.cta-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: var(--text);
}

.cta-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    padding: 20px 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(74, 127, 233, 0.3);
}

.cta-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 32px rgba(74, 127, 233, 0.4);
}

.cta-button svg {
    width: 24px;
    height: 24px;
}

.cta-stats {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    text-align: center;
}

.cta-stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.cta-stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==================== 页脚 ==================== */
.footer {
    position: relative;
    z-index: 1;
    padding: 80px 50px 30px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    flex-shrink: 0;
    max-width: 280px;
}

.footer-logo {
    height: 36px;
    margin-bottom: 16px;
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.footer-social {
    display: flex;
    gap: 12px;
}

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

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(74, 127, 233, 0.3);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

.footer-links-grid {
    display: flex;
    gap: 100px;
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 14px;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-visual {
        height: 600px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .step-line {
        display: none;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 0 20px;
    }
    
    .logo-img {
        height: 28px;
    }

    .nav-menu {
        display: none;
    }
    
    .nav-menu.mobile-menu-open {
        display: flex !important;
        flex-direction: column;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        z-index: 999;
        animation: slideDown 0.3s ease-out;
    }
    
    .nav-menu.mobile-menu-open li {
        border-bottom: 1px solid var(--border);
    }
    
    .nav-menu.mobile-menu-open li:last-child {
        border-bottom: none;
    }
    
    .nav-menu.mobile-menu-open .nav-link {
        padding: 15px 0;
        display: block;
        font-size: 16px;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .hero-visual {
        display: none !important;
    }
    
    .stats-trust-container {
        gap: 20px;
    }
    
    .hero-stats-mini {
        gap: 25px;
        padding-bottom: 20px;
    }
    
    .trust-indicators {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .trust-item {
        padding: 14px 10px;
        min-height: 70px;
        font-size: 0.8rem;
    }
    
    .trust-item svg {
        width: 20px;
        height: 20px;
    }

    .language-button {
        padding: 6px 12px;
        min-width: auto;
    }
    
    .language-button .language-text {
        display: none;
    }
    
    .language-icon,
    .chevron-icon {
        width: 16px;
        height: 16px;
    }
    
    .btn-nav {
        padding: 10px 20px;
        font-size: 14px;
        white-space: nowrap;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: 140px 30px 60px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 400px;
        justify-content: center;
    }
    
    .btn-primary-hero {
        padding: 18px 40px;
        font-size: 1.1rem;
    }

    .hero-visual {
        height: 500px;
    }
    
    .topology-container {
        padding: 20px;
    }
    
    .core-node .node-center {
        width: 60px;
        height: 60px;
    }
    
    .node-icon {
        width: 30px;
        height: 30px;
    }
    
    .ring-1 {
        width: 140px;
        height: 140px;
    }
    
    .ring-2 {
        width: 110px;
        height: 110px;
    }
    
    .ring-3 {
        width: 80px;
        height: 80px;
    }
    
    .feature-nodes {
        width: 480px;
        height: 480px;
    }
    
    .feature-node {
        width: 90px;
        height: 65px;
    }
    
    .node-content {
        padding: 10px;
        gap: 5px;
        border-radius: 12px;
    }
    
    .node-icon-wrapper {
        width: 28px;
        height: 28px;
    }
    
    .node-icon-wrapper svg {
        width: 16px;
        height: 16px;
    }
    
    .node-value {
        font-size: 1rem;
    }
    
    .node-text {
        font-size: 0.65rem;
    }
    
    .node-1 .node-connector,
    .node-2 .node-connector,
    .node-3 .node-connector,
    .node-4 .node-connector {
        height: 165px;
    }
    
    .format-orbit {
        width: 300px;
        height: 300px;
    }
    
    .format-item {
        width: 50px;
        height: 50px;
        margin: -25px 0 0 -25px;
    }
    
    .format-item svg {
        width: 18px;
        height: 18px;
    }
    
    .format-item span {
        font-size: 0.6rem;
    }
    
    .lock-indicator {
        width: 16px;
        height: 16px;
        top: -6px;
        right: -6px;
    }
    
    .lock-indicator svg {
        width: 10px;
        height: 10px;
    }
    
    .orbit-1,
    .orbit-2,
    .orbit-3,
    .orbit-4,
    .orbit-5,
    .orbit-6 {
        animation: orbitRotate 25s linear infinite;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .formats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cta-container {
        padding: 60px 30px;
    }

    .cta-title {
        font-size: 2rem;
    }

    .cta-stats {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .footer-links-grid {
        gap: 60px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .language-modal-content,
    .security-modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .language-modal-header,
    .security-modal-header {
        padding: 20px;
    }
    
    .language-search {
        padding: 15px 20px;
    }
    
    .security-modal-body {
        padding: 20px;
    }
    
    .security-features {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .security-feature-item {
        padding: 20px;
    }
    
    .security-icon-header {
        gap: 12px;
    }
    
    .security-icon-header svg {
        width: 28px;
        height: 28px;
    }
    
    .pricing-card {
        padding: 40px 30px;
    }
    
    .price-amount {
        font-size: 2.5rem;
    }
    
    .download-main-card {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px 30px;
    }
    
    .download-features {
        gap: 20px;
    }
    
    .download-feature-item {
        padding: 20px;
    }
    
    .download-stats {
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 15px;
    }
    
    .logo-img {
        height: 24px;
    }
    
    .language-button {
        padding: 5px 10px;
    }
    
    .btn-nav {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .btn-primary-hero {
        padding: 16px 32px;
        font-size: 1rem;
    }
    
    .hero {
        padding: 120px 20px 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-visual {
        height: 550px;
    }
    
    .topology-container {
        padding: 15px;
    }
    
    .core-node .node-center {
        width: 50px;
        height: 50px;
    }
    
    .node-icon {
        width: 24px;
        height: 24px;
    }
    
    .ring-1 {
        width: 120px;
        height: 120px;
    }
    
    .ring-2 {
        width: 90px;
        height: 90px;
    }
    
    .ring-3 {
        width: 65px;
        height: 65px;
    }
    
    .node-pulse {
        width: 50px;
        height: 50px;
    }
    
    .feature-nodes {
        width: 400px;
        height: 400px;
    }
    
    .feature-node {
        width: 80px;
        height: 58px;
    }
    
    .node-content {
        padding: 8px;
        gap: 4px;
        border-radius: 10px;
    }
    
    .node-icon-wrapper {
        width: 24px;
        height: 24px;
        border-radius: 8px;
    }
    
    .node-icon-wrapper svg {
        width: 14px;
        height: 14px;
    }
    
    .node-value {
        font-size: 0.85rem;
    }
    
    .node-text {
        font-size: 0.6rem;
    }
    
    .node-1 .node-connector,
    .node-2 .node-connector,
    .node-3 .node-connector,
    .node-4 .node-connector {
        height: 125px;
    }
    
    .format-orbit {
        width: 260px;
        height: 260px;
    }
    
    .format-item {
        width: 44px;
        height: 44px;
        margin: -22px 0 0 -22px;
    }
    
    .format-item svg {
        width: 16px;
        height: 16px;
    }
    
    .format-item span {
        font-size: 0.55rem;
    }
    
    .lock-indicator {
        width: 14px;
        height: 14px;
        top: -5px;
        right: -5px;
    }
    
    .lock-indicator svg {
        width: 9px;
        height: 9px;
    }
    
    .orbit-1 {
        transform: rotate(0deg) translate(130px) rotate(0deg);
    }
    
    .orbit-2 {
        transform: rotate(60deg) translate(130px) rotate(-60deg);
    }
    
    .orbit-3 {
        transform: rotate(120deg) translate(130px) rotate(-120deg);
    }
    
    .orbit-4 {
        transform: rotate(180deg) translate(130px) rotate(-180deg);
    }
    
    .orbit-5 {
        transform: rotate(240deg) translate(130px) rotate(-240deg);
    }
    
    .orbit-6 {
        transform: rotate(300deg) translate(130px) rotate(-300deg);
    }
    
    @keyframes orbitRotate {
        from {
            transform: rotate(0deg) translate(130px) rotate(0deg);
        }
        to {
            transform: rotate(360deg) translate(130px) rotate(-360deg);
        }
    }

    .section-title {
        font-size: 1.75rem;
    }

    .formats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links-grid {
        flex-direction: column;
        gap: 40px;
    }
    
    .stats-trust-container {
        gap: 15px;
    }
    
    .hero-stats-mini {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        padding-bottom: 15px;
    }
    
    .stat-mini {
        width: 100%;
    }
    
    .trust-indicators {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .trust-item {
        flex-direction: row;
        justify-content: flex-start;
        padding: 12px 15px;
        min-height: auto;
        gap: 12px;
        text-align: left;
    }
    
    .trust-item svg {
        width: 18px;
        height: 18px;
    }
}