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

body {
    font-family: "MiSans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: linear-gradient(135deg, #0a0e1a 0%, #1a1f3a 50%, #0d1b2a 100%);
    color: #e0e0e0;
    min-height: 100vh;
    line-height: 1.6;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: #7ec8e3;
    letter-spacing: 2px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Container */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Hero */
.hero {
    text-align: center;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 42px;
    color: #ffffff;
    margin-bottom: 16px;
    text-shadow: 0 0 30px rgba(126, 200, 227, 0.3);
}

.hero p {
    font-size: 18px;
    color: #a0b0c0;
    margin-bottom: 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #4a9eff;
    color: #fff;
    border: 2px solid #4a9eff;
}

.btn:hover {
    background: #3a8eef;
    border-color: #3a8eef;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 158, 255, 0.3);
}

.btn-outline {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    color: #e0e0e0;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.1);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.info-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 12px;
    color: #7ec8e3;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-value {
    font-size: 16px;
    color: #ffffff;
    font-weight: 600;
}

/* Version Grid */
.version-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 600px;
    margin: 0 auto;
}

.version-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.version-card:hover {
    transform: translateY(-4px);
    border-color: rgba(74, 158, 255, 0.3);
    box-shadow: 0 8px 30px rgba(74, 158, 255, 0.15);
}

.version-card h3 {
    font-size: 20px;
    color: #7ec8e3;
    margin-bottom: 8px;
}

.version-card p {
    font-size: 16px;
    color: #ffffff;
    font-weight: 600;
    margin-bottom: 8px;
}

.version-desc {
    font-size: 13px !important;
    color: #a0b0c0 !important;
    font-weight: 400 !important;
    line-height: 1.5;
}

/* Section */
.section {
    text-align: center;
    padding: 40px 0;
}

.section-title {
    font-size: 28px;
    color: #7ec8e3;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: #4a9eff;
    margin: 12px auto 0;
    border-radius: 2px;
}

.section p {
    font-size: 16px;
    color: #b0c0d0;
    max-width: 700px;
    margin: 0 auto;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 40px 0;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 32px 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(74, 158, 255, 0.3);
    box-shadow: 0 8px 30px rgba(74, 158, 255, 0.15);
}

.feature-card h3 {
    font-size: 20px;
    color: #7ec8e3;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: #a0b0c0;
    line-height: 1.6;
}

/* Rules Content */
.rules-content {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 28px 32px;
}

.rules-content > ol {
    list-style: none;
    counter-reset: rule-counter;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.rules-content > ol > li {
    counter-increment: rule-counter;
    font-size: 15px;
    color: #c0d0e0;
    line-height: 1.7;
    padding: 8px 0 8px 40px;
    position: relative;
}

.rules-content > ol > li::before {
    content: counter(rule-counter) ".";
    position: absolute;
    left: 0;
    top: 8px;
    font-weight: 700;
    color: #4a9eff;
    font-size: 16px;
}

.rules-content ol ol {
    margin-top: 8px;
    gap: 6px;
    padding-left: 24px;
}

.rules-content ol ol li {
    font-size: 14px;
    color: #a0b0c0;
    line-height: 1.6;
    padding: 2px 0;
}

/* Join Buttons */
.join-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 24px;
}

/* Step Content */
.step-content {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.step-content > p {
    font-size: 16px;
    color: #b0c0d0;
    line-height: 1.8;
}

.step-content .step-buttons {
    text-align: center;
}

.sub-step {
    margin-top: 24px;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
}

.sub-step h3 {
    font-size: 18px;
    color: #7ec8e3;
    margin-bottom: 12px;
}

/* Sub Intro */
.sub-intro {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 28px 32px;
}

.sub-intro p {
    font-size: 16px;
    color: #b0c0d0;
    line-height: 1.8;
}

.sub-intro ul {
    padding-left: 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 12px 0;
}

.sub-intro ul li {
    font-size: 15px;
    color: #c0d0e0;
    line-height: 1.7;
    padding: 2px 0;
    list-style: disc;
}

.sub-intro ul li::marker {
    color: #4a9eff;
}

.instruction-list {
    padding-left: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.instruction-list li {
    font-size: 15px;
    color: #c0d0e0;
    line-height: 1.7;
    padding: 2px 0;
}

.instruction-list li code {
    background: rgba(74, 158, 255, 0.15);
    color: #7ec8e3;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
}

/* Carousel */
.carousel-section {
    padding: 20px 0 40px;
}

.carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.carousel-track {
    display: flex;
    width: 500%;
    transition: transform 0.5s ease;
}

.carousel-slide {
    width: 20%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.carousel-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s ease;
}

.dot.active {
    background: #fff;
}

/* Footer */
.footer {
    text-align: center;
    padding: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 40px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

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

    .container {
        padding: 20px 16px;
    }

    .carousel-section {
        padding: 10px 0 30px;
    }
}

/* Gallery */
.gallery-container {
    text-align: center;
}

.gallery-viewer {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-viewer img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.gallery-viewer img.loaded {
    opacity: 1;
}

.gallery-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #a0b0c0;
    font-size: 15px;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.gallery-loading.hidden {
    opacity: 0;
}

.gallery-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 20px;
}

.gallery-nav button {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #e0e0e0;
    padding: 10px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.gallery-nav button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(74, 158, 255, 0.4);
}

.gallery-nav button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.gallery-counter {
    font-size: 14px;
    color: #a0b0c0;
    min-width: 80px;
    text-align: center;
}

.gallery-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
    max-width: 340px;
    margin-left: auto;
    margin-right: auto;
}

.gallery-dots .dot {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #a0b0c0;
    font-size: 13px;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.gallery-dots .dot:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(74, 158, 255, 0.4);
}

.gallery-dots .dot.active {
    background: #4a9eff;
    border-color: #4a9eff;
    color: #fff;
}

.gallery-caption {
    text-align: center;
    font-size: 15px;
    color: #b0c0d0;
    margin-top: 12px;
    min-height: 24px;
    padding: 0 16px;
}