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

body {
    background-color: #0a0a0a;
    color: #e0e0e0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    display: flex;
    min-height: 100vh;
    max-width: 1300px;
    margin: 0 auto;
}

.left-nav {
    width: 260px;
    background-color: #0f0f0f;
    padding: 60px 30px 40px;
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid #274372;
    flex-shrink: 0;
    display: none;
    z-index: 10;
}

@media (min-width: 1024px) {
    .left-nav {
        display: block;
    }
}

.nav-logo {
    font-size: 34px;
    font-weight: 800;
    letter-spacing: 8px;
    color: #274372;
    margin-bottom: 80px;
    text-transform: uppercase;
}

.left-nav a {
    display: block;
    color: #aaaaaa;
    text-decoration: none;
    padding: 16px 24px;
    margin-bottom: 8px;
    font-size: 15.5px;
    transition: all 0.25s ease;
    border-left: 3px solid transparent;
}

.left-nav a:hover {
    color: #ffffff;
    background-color: #1a1a1a;
    border-left-color: #274372;
}

main {
    flex: 1;
    padding: 50px 40px;
    max-width: 1040px;
}

header {
    text-align: center;
    margin-bottom: 80px;
    padding-bottom: 55px;
    border-bottom: 1px solid #274372;
}

h1 {
    font-size: 58px;
    font-weight: 700;
    letter-spacing: 12px;
    margin-bottom: 18px;
    color: #ffffff;
    text-shadow: 0 0 40px rgba(39, 67, 114, 0.6);
}

.accent {
    color: #274372;
}

.tagline {
    font-size: 19.5px;
    color: #bbbbbb;
    max-width: 640px;
    margin: 0 auto;
}

.ad-banner {
    margin: 60px auto 75px;
    text-align: center;
    max-width: 1060px;
    border: 1px solid #274372;
    background: #0f0f0f;
    padding: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.ad-banner img {
    max-width: 100%;
    height: auto;
    display: block;
}

section {
    margin-bottom: 120px;
}

h2 {
    font-size: 30px;
    font-weight: 600;
    margin-bottom: 36px;
    color: #274372;
    letter-spacing: 5px;
    position: relative;
    padding-left: 28px;
}

h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background-color: #274372;
    border-radius: 50%;
}

.screenshot {
    margin-bottom: 48px;
    border: 1px solid #274372;
    background-color: #111111;
    padding: 16px;
    transition: all 0.35s ease;
}

.screenshot:hover {
    border-color: #3a5a8c;
    transform: translateY(-6px);
    box-shadow: 0 15px 35px rgba(39, 67, 114, 0.25);
}

.screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

.caption {
    text-align: center;
    padding: 16px 0 8px;
    font-size: 14.8px;
    color: #888888;
    letter-spacing: 1px;
}

.description {
    font-size: 17.2px;
    color: #d0d0d0;
    max-width: 740px;
    margin-top: 22px;
}

.description strong {
    color: #ffffff;
}

.subtext {
    color: #999999;
    font-size: 16.2px;
    margin-bottom: 34px;
    font-style: italic;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

@media (min-width: 820px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-item {
    background-color: #111111;
    border: 1px solid #274372;
    padding: 32px 28px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: #3a5a8c;
    background-color: #161616;
}

.feature-item h3 {
    color: #ffffff;
    margin-bottom: 16px;
    font-size: 21.5px;
    font-weight: 600;
}

.wallet-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 34px;
}

@media (min-width: 820px) {
    .wallet-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.wallet-card {
    border: 1px solid #274372;
    background-color: #111111;
    padding: 28px;
    transition: all 0.3s ease;
}

.wallet-card:hover {
    border-color: #3a5a8c;
    transform: translateY(-4px);
}

.wallet-card img {
    width: 100%;
    height: auto;
    margin-bottom: 26px;
    border: 1px solid #1f1f1f;
}

.wallet-info h3 {
    color: #274372;
    margin-bottom: 14px;
    font-size: 23px;
    font-weight: 600;
}

.mirrors-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin: 40px 0 30px;
}

.mirror-link {
    color: #e0e0e0;
    text-decoration: none;
    padding: 20px 26px;
    background-color: #111111;
    border: 1px solid #274372;
    font-family: ui-monospace, monospace;
    font-size: 15.8px;
    transition: all 0.3s ease;
    word-break: break-all;
}

.mirror-link:hover {
    background-color: #1c1c1c;
    border-color: #ffffff;
    color: #ffffff;
}

.warning {
    color: #ff6666;
    font-size: 15.8px;
    margin-bottom: 12px;
    font-weight: 500;
}

.note {
    color: #888888;
    font-size: 15.2px;
    max-width: 700px;
    margin-top: 40px;
}

footer {
    text-align: center;
    padding: 80px 0 60px;
    border-top: 1px solid #274372;
    color: #666666;
    font-size: 14.8px;
}

.disclaimer {
    margin-top: 18px;
    font-style: italic;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.category-list,
.reason-list {
    margin: 25px 0 35px 20px;
}

.category-list li,
.reason-list li {
    margin-bottom: 14px;
    color: #d0d0d0;
}

ul {
    list-style-type: disc;
}

@media (max-width: 1023px) {
    .container {
        flex-direction: column;
    }
    
    .left-nav {
        width: 100%;
        height: auto;
        position: relative;
        padding: 30px 20px;
        border-right: none;
        border-bottom: 1px solid #274372;
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    
    .nav-logo {
        width: 100%;
        text-align: center;
        margin-bottom: 30px;
    }
    
    main {
        padding: 40px 25px;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 44px;
        letter-spacing: 6px;
    }
    
    .ad-banner {
        margin: 45px auto 55px;
    }
    
    section {
        margin-bottom: 90px;
    }
    
    main {
        padding: 35px 20px;
    }
    
    h2 {
        font-size: 26px;
    }
}