:root {
    --bg-color: #0b0f19;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-color: #00f2fe; /* Neon Blue */
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --nav-height: 80px;
}

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

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

/* Typography */
h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navbar */
.navbar {
    height: var(--nav-height);
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--card-border);
    transition: background 0.3s, box-shadow 0.3s;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
}
.logo img {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    box-shadow: 0 0 18px rgba(170, 255, 0, 0.35);
}
.logo span {
    color: var(--text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}
.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.nav-btn {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    border: 1px solid var(--card-border);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}
.nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-height) + 2rem) 5% 2rem;
    gap: 2rem;
}

.hero-content {
    flex: 1;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.primary-btn {
    background: var(--accent-gradient);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
}
.primary-btn:hover {
    box-shadow: 0 0 30px rgba(0, 242, 254, 0.6);
    transform: translateY(-2px);
}

.secondary-btn {
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}
.secondary-btn:hover {
    background: rgba(0, 242, 254, 0.1);
    transform: translateY(-2px);
}

/* Hero Visual (Glassmorphism Mockup) */
.hero-visual {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    position: relative;
}

.app-logo-showcase {
    width: 180px;
    height: 180px;
    padding: 10px;
    border-radius: 36px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--card-border);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 34px rgba(170, 255, 0, 0.18);
}
.app-logo-showcase img {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 28px;
}

.glass-panel {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    width: 350px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    transform: perspective(1000px) rotateY(-15deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.glass-panel:hover {
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg) scale(1.02);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 1.1rem;
}
.calc-row.result {
    border-bottom: none;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--accent-color);
    margin-top: 0.5rem;
}
.green {
    color: #00ff88;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 5rem 5%;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--accent-color);
}

.feature-card p {
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: calc(var(--nav-height) + 4rem);
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        margin: 0 auto 2rem;
    }
    
    .cta-group {
        justify-content: center;
    }
    .logo {
        gap: 0.5rem;
        font-size: 1rem;
    }
    .logo img {
        width: 36px;
        height: 36px;
        border-radius: 10px;
    }
    .nav-actions {
        gap: 0.75rem;
    }
    .nav-btn {
        padding: 0.45rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .app-logo-showcase {
        width: 140px;
        height: 140px;
    }
    .glass-panel {
        transform: none;
        margin-top: 1rem;
    }
    .glass-panel:hover {
        transform: translateY(-5px);
    }
}

/* Strategy Section */
.strategy {
    padding: 8rem 5%;
    background: linear-gradient(180deg, var(--bg-color) 0%, #0d1326 100%);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

.strategy-timeline {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.strategy-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--card-border);
    z-index: 0;
}

.strategy-step {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--bg-color);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    flex-shrink: 0;
    box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
}

.step-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: 16px;
    flex: 1;
    transition: transform 0.3s ease, background 0.3s ease;
}

.step-content:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.05);
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.step-content p {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .strategy-timeline::before {
        left: 30px;
    }
    .strategy-step {
        gap: 1.5rem;
    }
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }
    .step-content {
        padding: 1.5rem;
    }
}

/* Scenario Section */
.scenario {
    padding: 5rem 5% 8rem;
    background: #0d1326;
}

.scenario-container {
    max-width: 1000px;
    margin: 0 auto;
}

.scenario-header {
    text-align: center;
    margin-bottom: 4rem;
}

.badge {
    display: inline-block;
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.scenario-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.scenario-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Tabs */
.scenario-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    padding: 1rem 2rem;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tab-btn.active {
    background: rgba(0, 242, 254, 0.15);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.scenario-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.scenario-content.active {
    display: block;
}

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

.scenario-case-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--accent-color);
}

.scenario-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.scenario-step-box {
    flex: 1;
    background: rgba(11, 15, 25, 0.6);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.scenario-step-box:hover {
    transform: translateY(-5px);
}

.result-box {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.1) 0%, rgba(11, 15, 25, 0.8) 100%);
    border-color: rgba(0, 242, 254, 0.3);
}

.time-label {
    font-weight: 800;
    color: #fff;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.index-data {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.index-data.leverage {
    color: var(--text-secondary);
    font-size: 1rem;
    padding-top: 0.5rem;
    border-top: 1px dashed rgba(255,255,255,0.1);
}

.profit-data {
    font-size: 3rem;
    font-weight: 800;
    margin: 1rem 0;
}

.value.down { color: #ff4757; }
.value.up { color: #00ff88; text-shadow: 0 0 15px rgba(0, 255, 136, 0.4); }

.scenario-step-box .desc {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.scenario-arrow {
    color: var(--card-border);
    font-size: 2rem;
    font-weight: 300;
}

@media (max-width: 900px) {
    .scenario-card {
        flex-direction: column;
    }
    .scenario-arrow {
        transform: rotate(90deg);
        margin: 1rem 0;
    }
}

/* Warning Box */
.warning-box {
    margin-top: 5rem;
    padding: 2rem;
    background: rgba(255, 71, 87, 0.05);
    border: 1px solid rgba(255, 71, 87, 0.2);
    border-radius: 16px;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.warning-content h4 {
    color: #ff4757;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    font-weight: 800;
}

.warning-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.highlight-red {
    color: #ff4757;
    font-weight: 600;
}

/* Download Section */
.download {
    padding: 6rem 5%;
    background: linear-gradient(180deg, #0d1326 0%, var(--bg-color) 100%);
    text-align: center;
}

.download-container {
    max-width: 760px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem 2rem;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28);
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.download-note {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 1.5rem;
}

/* Footer */
.footer {
    padding: 2rem 5%;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
    text-align: center;
    font-size: 0.9rem;
    background: var(--bg-color);
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .warning-box {
        flex-direction: column;
        gap: 1rem;
    }
    .download-container {
        padding: 2rem 1.25rem;
    }
}