/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-primary: #050508;
    --bg-section: #0a0a14;
    --bg-card: rgba(15, 25, 40, 0.7);
    --text-primary: #ffffff;
    --text-secondary: #aaaacc;
    --accent-blue: #00d9ff;
    --accent-gold: #ffcc00;
    --accent-purple: #b53cff;
    --accent-red: #ff3c3c;
    --accent-green: #00ff88;
    --border: rgba(255, 255, 255, 0.08);
    --radius: 16px;
    --radius-sm: 10px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(5, 5, 8, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-logo-icon { font-size: 1.3rem; }
.nav-logo-text { font-size: 1.1rem; font-weight: 900; color: #fff; letter-spacing: 2px; }
.nav-logo-sub { font-size: 0.8rem; font-weight: 600; color: var(--accent-blue); opacity: 0.8; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.2s;
}

.nav-links a:hover { color: #fff; }

.nav-cta {
    background: var(--accent-blue) !important;
    color: #000 !important;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 700 !important;
    transition: transform 0.2s, box-shadow 0.2s !important;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.4);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
}

.hero-glow-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-blue);
    top: -200px;
    right: -100px;
    opacity: 0.15;
}

.hero-glow-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-purple);
    bottom: -150px;
    left: -100px;
    opacity: 0.12;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--accent-gold);
    opacity: 0.7;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.btn-primary-hero {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: linear-gradient(135deg, var(--accent-blue), #0099cc);
    color: #000;
    font-weight: 800;
    font-size: 1rem;
    border-radius: 50px;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.4);
}

.btn-secondary-hero {
    display: inline-flex;
    align-items: center;
    padding: 16px 36px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50px;
    text-decoration: none;
    transition: background 0.2s, border-color 0.2s;
}

.btn-secondary-hero:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-stats-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.hero-stat-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.stat-dot.str { background: var(--accent-red); }
.stat-dot.int { background: var(--accent-blue); }
.stat-dot.cha { background: var(--accent-purple); }
.stat-dot.vit { background: var(--accent-green); }
.stat-dot.wlt { background: var(--accent-gold); }
.stat-dot.agi { background: #ff8800; }

/* ===== Features Section ===== */
.features {
    padding: 100px 0;
    background: var(--bg-section);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s, transform 0.6s;
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--accent-blue);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 900;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.5s, transform 0.5s, border-color 0.3s, box-shadow 0.3s;
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }
.feature-card:nth-child(4) { transition-delay: 0.05s; }
.feature-card:nth-child(5) { transition-delay: 0.15s; }
.feature-card:nth-child(6) { transition-delay: 0.25s; }

.feature-card:hover {
    border-color: rgba(0, 217, 255, 0.3);
    box-shadow: 0 8px 40px rgba(0, 217, 255, 0.08);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 18px;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Screenshots Section ===== */
.screenshots-section {
    padding: 100px 0;
    background: var(--bg-primary);
    overflow: hidden;
}

.screenshots-carousel {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
    margin: 0 -24px;
    padding: 0 24px;
}

.screenshots-carousel::-webkit-scrollbar {
    display: none;
}

.screenshots-track {
    display: flex;
    gap: 24px;
    justify-content: center;
    padding: 20px 0;
}

.screenshot-item {
    flex-shrink: 0;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.5s, transform 0.5s;
}

.screenshot-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.screenshot-item:nth-child(2) { transition-delay: 0.1s; }
.screenshot-item:nth-child(3) { transition-delay: 0.2s; }
.screenshot-item:nth-child(4) { transition-delay: 0.3s; }
.screenshot-item:nth-child(5) { transition-delay: 0.4s; }

.screenshot-phone {
    width: 200px;
    border-radius: 20px;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.screenshot-phone:hover {
    transform: translateY(-8px) scale(1.03);
    border-color: rgba(0, 217, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 217, 255, 0.15);
}

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

/* ===== Stats Section ===== */
.stats-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    text-align: center;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.5s, transform 0.5s;
}

.stat-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-card:nth-child(2) { transition-delay: 0.08s; }
.stat-card:nth-child(3) { transition-delay: 0.16s; }
.stat-card:nth-child(4) { transition-delay: 0.04s; }
.stat-card:nth-child(5) { transition-delay: 0.12s; }
.stat-card:nth-child(6) { transition-delay: 0.2s; }

.stat-card-icon { font-size: 2rem; margin-bottom: 12px; }

.stat-card-name {
    font-size: 1.4rem;
    font-weight: 900;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.stat-str .stat-card-name { color: var(--accent-red); }
.stat-int .stat-card-name { color: var(--accent-blue); }
.stat-cha .stat-card-name { color: var(--accent-purple); }
.stat-vit .stat-card-name { color: var(--accent-green); }
.stat-wlt .stat-card-name { color: var(--accent-gold); }
.stat-agi .stat-card-name { color: #ff8800; }

.stat-card-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.stat-card-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.stat-card-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1s ease;
}

.stat-str .stat-card-fill { background: linear-gradient(90deg, var(--accent-red), #ff6666); }
.stat-int .stat-card-fill { background: linear-gradient(90deg, var(--accent-blue), #66e5ff); }
.stat-cha .stat-card-fill { background: linear-gradient(90deg, var(--accent-purple), #d580ff); }
.stat-vit .stat-card-fill { background: linear-gradient(90deg, var(--accent-green), #66ffaa); }
.stat-wlt .stat-card-fill { background: linear-gradient(90deg, var(--accent-gold), #ffe066); }
.stat-agi .stat-card-fill { background: linear-gradient(90deg, #ff8800, #ffaa44); }

/* ===== Recommend Section ===== */
.recommend-section {
    padding: 100px 0;
    background: var(--bg-section);
}

.recommend-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.recommend-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s, transform 0.5s;
}

.recommend-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.recommend-card:nth-child(2) { transition-delay: 0.08s; }
.recommend-card:nth-child(3) { transition-delay: 0.16s; }
.recommend-card:nth-child(4) { transition-delay: 0.24s; }

.recommend-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.recommend-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.recommend-card strong {
    color: var(--text-primary);
}

/* ===== Language Section ===== */
.lang-section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.lang-banner {
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: center;
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.lang-icon { font-size: 2.4rem; }

.lang-text h3 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.lang-text p {
    font-size: 1rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* ===== Download Section ===== */
.download-section {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-section) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.download-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.download-icon {
    width: 120px;
    height: 120px;
    border-radius: 28px;
    margin-bottom: 32px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.download-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 900;
    margin-bottom: 12px;
}

.download-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    padding: 16px 40px;
    background: #fff;
    color: #000;
    border-radius: 14px;
    text-decoration: none;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

.btn-download small {
    display: block;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-align: left;
    opacity: 0.6;
}

.btn-download strong {
    display: block;
    font-size: 1.15rem;
    font-weight: 800;
    text-align: left;
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.footer-logo {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.footer-studio {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent-gold);
    opacity: 0.6;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    transition: color 0.2s;
}

.footer-links a:hover { color: #fff; }

.footer-copy {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.3);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .features-grid,
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .screenshots-track {
        justify-content: flex-start;
    }

    .screenshot-phone {
        width: 180px;
    }
}

@media (max-width: 600px) {
    .nav-links a:not(.nav-cta) { display: none; }

    .hero { padding: 100px 20px 60px; }

    .hero-desc br { display: none; }

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

    .screenshot-phone {
        width: 160px;
    }

    .screenshots-track {
        justify-content: flex-start;
        gap: 16px;
    }

    .lang-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .download-icon {
        width: 96px;
        height: 96px;
        border-radius: 22px;
    }

    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
}