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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #0f1620;
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

.stars-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(60, 190, 242, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(60, 190, 242, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(48, 57, 72, 0.2) 0%, transparent 100%);
    z-index: -2;
}

.stars-bg::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(60, 190, 242, 0.02) 50%, transparent 70%),
        linear-gradient(135deg, rgba(60, 190, 242, 0.01) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 0;
    flex-wrap: wrap;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.logo-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.logo {
    display: block;
    filter: drop-shadow(0 4px 12px rgba(60, 190, 242, 0.2));
    transition: filter 0.3s ease;
}

.logo:hover {
    filter: drop-shadow(0 6px 16px rgba(60, 190, 242, 0.3));
}

.tagline {
    font-size: 13px;
    color: #3cbef2;
    font-weight: 500;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    opacity: 0.9;
}

.main-nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

.main-nav a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.25s ease;
    padding: 8px 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3cbef2, transparent);
    transition: width 0.3s ease;
}

.main-nav a:hover {
    color: #3cbef2;
}

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

.main-nav i {
    font-size: 14px;
    opacity: 0.8;
}

.hero {
    text-align: center;
    padding: 100px 0 80px;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(60, 190, 242, 0.08) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
    line-height: 1.1;
    background: linear-gradient(135deg, #FFFFFF 0%, rgba(255, 255, 255, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.accent {
    background: linear-gradient(135deg, #3cbef2 0%, #2a9dcf 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.accent::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #3cbef2, transparent);
    opacity: 0.5;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 680px;
    margin: 0 auto 48px;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.stat {
    text-align: center;
    position: relative;
    padding: 0 20px;
}

.stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 1px;
    height: 100%;
    background: linear-gradient(transparent, rgba(60, 190, 242, 0.3), transparent);
}

.stat:first-child::before {
    display: none;
}

.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: #3cbef2;
    margin-bottom: 4px;
    text-shadow: 0 4px 12px rgba(60, 190, 242, 0.3);
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 500;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-top: 32px;
    padding: 16px 36px;
    background: linear-gradient(135deg, #3cbef2 0%, #2a9dcf 100%);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(60, 190, 242, 0.3);
    position: relative;
    overflow: hidden;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(60, 190, 242, 0.4);
}

.hero-cta:hover::before {
    left: 100%;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw;
    height: 100%;
    background: linear-gradient(180deg, transparent, rgba(15, 22, 32, 0.8), transparent);
    z-index: -1;
    pointer-events: none;
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    color: #FFFFFF;
    font-weight: 700;
}

.section-title i {
    color: #3cbef2;
    font-size: 28px;
    background: rgba(60, 190, 242, 0.1);
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 56px;
    font-size: 1.125rem;
    max-width: 720px;
    line-height: 1.7;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
    margin-bottom: 40px;
}

.link-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(60, 190, 242, 0.15);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(60, 190, 242, 0.05), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.link-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(60, 190, 242, 0.4);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(60, 190, 242, 0.1),
        inset 0 0 40px rgba(60, 190, 242, 0.05);
}

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

.link-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    position: relative;
}

.link-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00a859, #00cc6a);
    box-shadow: 0 0 12px rgba(0, 168, 89, 0.5);
    position: relative;
}

.link-status::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0, 168, 89, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
    70% { transform: translate(-50%, -50%) scale(1.2); opacity: 0; }
    100% { transform: translate(-50%, -50%) scale(0.8); opacity: 0; }
}

.link-latency {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
    font-family: 'SF Mono', Monaco, monospace;
}

.link-url {
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 15px;
    color: #FFFFFF;
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    word-break: break-all;
    line-height: 1.5;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    position: relative;
}

.link-url:hover {
    background: rgba(0, 0, 0, 0.4);
    border-color: rgba(60, 190, 242, 0.2);
}

.link-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.copy-btn, .open-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-size: 14px;
    flex: 1;
    justify-content: center;
}

.copy-btn {
    background: linear-gradient(135deg, #3cbef2, #2a9dcf);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(60, 190, 242, 0.3);
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(60, 190, 242, 0.4);
}

.open-btn {
    background: rgba(255, 255, 255, 0.05);
    color: #3cbef2;
    border: 1px solid rgba(60, 190, 242, 0.3);
    text-decoration: none;
}

.open-btn:hover {
    background: rgba(60, 190, 242, 0.1);
    border-color: #3cbef2;
    transform: translateY(-2px);
}

.link-note {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.section-note {
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 193, 7, 0.05));
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    gap: 16px;
    backdrop-filter: blur(10px);
}

.section-note i {
    color: #ffc107;
    font-size: 20px;
    flex-shrink: 0;
}

.review-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.review-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(60, 190, 242, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.review-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #3cbef2, transparent);
    opacity: 0.6;
}

.review-card:hover {
    border-color: rgba(60, 190, 242, 0.3);
    transform: translateX(4px);
    box-shadow: 20px 0 40px rgba(0, 0, 0, 0.2);
}

.review-card h3 {
    color: #3cbef2;
    margin-bottom: 20px;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.review-card h3 i {
    font-size: 20px;
    background: rgba(60, 190, 242, 0.1);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.review-card p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 16px;
    font-size: 16px;
}

.review-card ul {
    padding-left: 24px;
    margin: 20px 0;
    list-style: none;
}

.review-card li {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    position: relative;
    padding-left: 24px;
}

.review-card li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: #3cbef2;
    font-size: 20px;
    line-height: 1;
}

.pros-cons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 28px;
}

.pros, .cons {
    padding: 28px;
    border-radius: 14px;
    transition: transform 0.3s ease;
}

.pros:hover, .cons:hover {
    transform: translateY(-4px);
}

.pros {
    background: linear-gradient(145deg, rgba(0, 168, 89, 0.1), rgba(0, 168, 89, 0.05));
    border: 1px solid rgba(0, 168, 89, 0.3);
}

.cons {
    background: linear-gradient(145deg, rgba(255, 51, 102, 0.1), rgba(255, 51, 102, 0.05));
    border: 1px solid rgba(255, 51, 102, 0.3);
}

.pros h4, .cons h4 {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: 600;
}

.pros h4 {
    color: #00a859;
}

.cons h4 {
    color: #ff3366;
}

.pros ul, .cons ul {
    list-style: none;
    padding-left: 0;
}

.pros li, .cons li {
    margin-bottom: 12px;
    padding-left: 28px;
    position: relative;
    color: rgba(255, 255, 255, 0.85);
}

.pros li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00a859;
    font-weight: bold;
}

.cons li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: #ff3366;
    font-weight: bold;
}

.verification-box {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(60, 190, 242, 0.2);
    border-radius: 16px;
    padding: 40px;
    max-width: 720px;
    margin: 0 auto 48px;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.input-group {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.link-input {
    flex: 1;
    padding: 18px 24px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    color: #FFFFFF;
    font-size: 16px;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
}

.link-input:focus {
    outline: none;
    border-color: #3cbef2;
    box-shadow: 0 0 0 3px rgba(60, 190, 242, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.link-input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.verify-btn {
    padding: 18px 36px;
    background: linear-gradient(135deg, #3cbef2, #2a9dcf);
    color: #FFFFFF;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(60, 190, 242, 0.3);
}

.verify-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(60, 190, 242, 0.4);
}

.validation-result {
    margin-top: 24px;
    padding: 20px 24px;
    border-radius: 12px;
    display: none;
    align-items: center;
    gap: 16px;
    font-weight: 500;
    font-size: 16px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.validation-result.success {
    display: flex;
    background: linear-gradient(135deg, rgba(0, 168, 89, 0.15), rgba(0, 168, 89, 0.05));
    border: 1px solid rgba(0, 168, 89, 0.4);
    color: #00a859;
}

.validation-result.error {
    display: flex;
    background: linear-gradient(135deg, rgba(255, 51, 102, 0.15), rgba(255, 51, 102, 0.05));
    border: 1px solid rgba(255, 51, 102, 0.4);
    color: #ff3366;
}

.validation-result::before {
    content: '';
    width: 24px;
    height: 24px;
    background-size: contain;
    background-repeat: no-repeat;
    flex-shrink: 0;
}

.validation-result.success::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2300a859'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
}

.validation-result.error::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ff3366'%3E%3Cpath d='M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12z'/%3E%3C/svg%3E");
}

.verification-info {
    margin-top: 28px;
    padding: 20px;
    background: rgba(60, 190, 242, 0.07);
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    line-height: 1.6;
    border: 1px solid rgba(60, 190, 242, 0.2);
}

.verification-info i {
    color: #3cbef2;
    margin-right: 12px;
    font-size: 18px;
    vertical-align: middle;
}

.verification-tips {
    margin-top: 56px;
    padding: 32px;
    background: linear-gradient(145deg, rgba(60, 190, 242, 0.08), rgba(60, 190, 242, 0.03));
    border-radius: 16px;
    border: 1px solid rgba(60, 190, 242, 0.2);
}

.verification-tips h4 {
    color: #3cbef2;
    margin-bottom: 24px;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.verification-tips ul {
    padding-left: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.verification-tips li {
    margin-bottom: 0;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.85);
    font-size: 15px;
    line-height: 1.5;
    transition: all 0.3s ease;
}

.verification-tips li:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(60, 190, 242, 0.3);
    transform: translateX(4px);
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin: 56px 0;
}

.step {
    display: flex;
    gap: 28px;
    align-items: flex-start;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    padding: 32px;
    border-radius: 16px;
    border-left: 4px solid #3cbef2;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.step:hover {
    border-left-width: 8px;
    transform: translateX(8px);
    background: linear-gradient(145deg, rgba(60, 190, 242, 0.05), rgba(60, 190, 242, 0.01));
}

.step-number {
    background: linear-gradient(135deg, #3cbef2, #2a9dcf);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
    flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(60, 190, 242, 0.3);
}

.step-content h3 {
    color: #FFFFFF;
    margin-bottom: 12px;
    font-size: 1.25rem;
    font-weight: 600;
}

.step-content p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.7;
    font-size: 15px;
}

.disclaimer {
    margin-top: 64px;
    padding: 28px;
    background: linear-gradient(145deg, rgba(255, 51, 102, 0.1), rgba(255, 51, 102, 0.05));
    border: 1px solid rgba(255, 51, 102, 0.3);
    border-radius: 16px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    backdrop-filter: blur(10px);
}

.disclaimer i {
    color: #ff3366;
    font-size: 24px;
    margin-top: 4px;
    flex-shrink: 0;
}

.disclaimer p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    line-height: 1.7;
}

.footer {
    text-align: center;
    padding: 64px 0 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 4px;
    background: linear-gradient(90deg, transparent, #3cbef2, transparent);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin: 32px 0;
    flex-wrap: wrap;
}

.footer-links a {
    color: #3cbef2;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 15px;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 8px;
}

.footer-links a:hover {
    background: rgba(60, 190, 242, 0.1);
    transform: translateY(-2px);
}

.footer-seo {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    line-height: 1.6;
}

.footer-seo strong {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
}

.notification {
    position: fixed;
    top: 32px;
    right: 32px;
    background: linear-gradient(135deg, #00a859, #00cc6a);
    color: white;
    padding: 16px 28px;
    border-radius: 12px;
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 12px 32px rgba(0, 168, 89, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(10px);
}

.notification::before {
    content: '✓';
    font-size: 20px;
    font-weight: bold;
}

.notification.show {
    transform: translateX(0);
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .links-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
    
    .pros-cons {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .main-nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
        padding: 0 16px;
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .stat {
        padding: 0 16px;
    }
    
    .stat-number {
        font-size: 2.25rem;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .links-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .verify-btn {
        width: 100%;
    }
    
    .step {
        flex-direction: column;
        gap: 20px;
    }
    
    .step-number {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
    
    .verification-tips ul {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        gap: 20px;
    }
    
    .review-card, .verification-box, .verification-tips, .guide-steps, .disclaimer {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .notification {
        right: 16px;
        left: 16px;
        transform: translateY(150%);
    }
    
    .notification.show {
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
    margin: 48px 0;
}

.feature-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(60, 190, 242, 0.1);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(60, 190, 242, 0.03), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(60, 190, 242, 0.3);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(60, 190, 242, 0.1), rgba(60, 190, 242, 0.05));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon i {
    font-size: 28px;
    color: #3cbef2;
}

.feature-card h3 {
    color: #FFFFFF;
    font-size: 1.25rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.7;
    font-size: 15px;
}

.faq-container {
    margin-top: 48px;
}

.faq-item {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(60, 190, 242, 0.2);
}

.faq-question {
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.01);
}

.faq-question h3 {
    color: #FFFFFF;
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    flex: 1;
}

.faq-question i {
    color: #3cbef2;
    font-size: 16px;
    transition: transform 0.3s ease;
    margin-left: 20px;
    flex-shrink: 0;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 32px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 32px 24px;
    max-height: 500px;
}

.faq-answer p {
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.7;
    font-size: 15px;
    margin: 0;
}

.seo-content {
    background: linear-gradient(145deg, rgba(60, 190, 242, 0.05), rgba(60, 190, 242, 0.02));
    border-radius: 20px;
    margin-top: 80px;
    border: 1px solid rgba(60, 190, 242, 0.15);
}

.seo-text {
    columns: 2;
    column-gap: 48px;
}

.seo-text p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 24px;
    font-size: 16px;
    break-inside: avoid;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    color: #FFFFFF;
    font-size: 1.125rem;
    margin-bottom: 24px;
    font-weight: 600;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    font-size: 14px;
}

.footer-section .footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-section .footer-links a {
    color: #3cbef2;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    padding: 8px 0;
}

.footer-section .footer-links a:hover {
    color: #FFFFFF;
    transform: translateX(4px);
}

.footer-section .footer-links i {
    font-size: 14px;
    width: 20px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    margin-bottom: 20px;
}

@media (max-width: 968px) {
    .seo-text {
        columns: 1;
    }
    
    .footer-content {
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-question {
        padding: 20px 24px;
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
    
    .faq-answer {
        padding: 0 24px;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 24px 20px;
    }
    
    .seo-content {
        padding: 32px !important;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .feature-card {
        padding: 24px;
    }
    
    .feature-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 20px;
    }
    
    .feature-icon i {
        font-size: 24px;
    }
    
    .faq-question {
        padding: 18px 20px;
    }
    
    .faq-answer {
        padding: 0 20px;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 20px 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .feature-card,
    .faq-item,
    .faq-question i,
    .footer-section .footer-links a {
        transition: none;
    }
    
    .faq-answer {
        transition: none;
    }
}

.will-change {
    will-change: transform, opacity;
}

.content-visibility-auto {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

@media (min-width: 1024px) {
    .section:nth-child(n+4) {
        content-visibility: auto;
        contain-intrinsic-size: 0 800px;
    }
}

.lazy-load {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.lazy-loaded {
    opacity: 1;
    transform: translateY(0);
}