:root {
    --black: #0a0a0a;
    --white: #f5f5f5;
    --gray: #888;
    --dark: #1a1a1a;
    --darker: #111;
    --accent: #ff5722;
    --accent-light: #ff8a65;
    --font-main: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

::selection {
    background: var(--accent);
    color: var(--black);
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--black);
}

::-webkit-scrollbar-thumb {
    background: var(--accent);
}

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
}

.nav-brand {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.dot {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--gray);
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--white);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255, 87, 34, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(255, 87, 34, 0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 6px;
    padding: 0.6rem 2rem;
    border: 1px solid rgba(255, 87, 34, 0.3);
    margin-bottom: 4rem;
    color: var(--accent);
}

.hero-title {
    margin-bottom: 2.5rem;
}

.hero-title .line {
    display: block;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
}

.line-1 {
    font-size: clamp(2.5rem, 8vw, 6rem);
    color: var(--gray);
    opacity: 0.4;
}

.line-2 {
    font-size: clamp(4rem, 14vw, 11rem);
    color: var(--white);
}

.line-3 {
    font-size: clamp(2.5rem, 8vw, 6rem);
    color: var(--gray);
    opacity: 0.4;
}

.line-4 {
    font-size: clamp(4rem, 14vw, 11rem);
    color: var(--accent);
}

.hero-sub {
    font-size: 1.2rem;
    color: var(--gray);
    margin-bottom: 5rem;
    letter-spacing: 12px;
    text-transform: uppercase;
    font-weight: 300;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    margin-bottom: 5rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 3px;
}

.hero-cta {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 3px;
    padding: 1rem 3rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.4s;
}

.hero-cta:hover {
    background: var(--white);
    color: var(--black);
    border-color: var(--white);
}

.scroll-line {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    width: 1px;
    height: 80px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.3; transform: scaleY(0.6); }
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
    padding: 0 2rem;
}

.section-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.section-num {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    letter-spacing: 2px;
}

.section-line {
    width: 60px;
    height: 1px;
    background: rgba(255, 87, 34, 0.3);
}

.section-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1rem;
    color: var(--gray);
    letter-spacing: 2px;
}

.timeline {
    padding: 10rem 2rem;
    background: var(--darker);
}

.timeline-track {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline-track::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 5rem;
    position: relative;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-right: calc(50% + 3rem);
    text-align: right;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: calc(50% + 3rem);
    text-align: left;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 5px;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 0 4px var(--darker), 0 0 0 5px rgba(255, 87, 34, 0.3);
}

.year {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    opacity: 0.15;
    min-width: 100px;
}

.timeline-item:nth-child(odd) .year {
    margin-right: 2rem;
}

.timeline-item:nth-child(even) .year {
    margin-left: 2rem;
}

.content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.content p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-item:nth-child(odd) .tags {
    justify-content: flex-end;
}

.tags span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.3rem 0.7rem;
    background: rgba(255, 87, 34, 0.08);
    border: 1px solid rgba(255, 87, 34, 0.15);
    color: var(--accent);
}

.timeline-item.future .year {
    color: var(--white);
    opacity: 0.3;
}

.evolution {
    padding: 10rem 2rem;
}

.evo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.evo-card {
    background: var(--darker);
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0;
    transform: translateY(30px);
    position: relative;
}

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

.evo-card:hover {
    border-color: rgba(255, 87, 34, 0.2);
    transform: translateY(-5px);
}

.evo-num {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.evo-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.evo-card ul li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
    color: var(--gray);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.evo-card ul li:last-child {
    border-bottom: none;
}

.ver {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    background: rgba(255, 87, 34, 0.1);
    padding: 0.2rem 0.5rem;
    min-width: 35px;
    text-align: center;
}

.impact {
    padding: 10rem 2rem;
    background: var(--darker);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.impact-card {
    background: var(--black);
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.impact-card:hover {
    border-color: rgba(255, 87, 34, 0.2);
}



.impact-num {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    opacity: 0.3;
}

.impact-letter {
    font-family: var(--font-main);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}



.impact-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.impact-stat {
    font-size: 0.95rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

.impact-stat span {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
}

.impact-card p:last-child {
    color: var(--gray);
    font-size: 0.85rem;
    line-height: 1.7;
}

.future {
    padding: 10rem 2rem;
}

.future-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.future-card {
    background: var(--darker);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.03);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

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

.future-card:hover {
    border-color: rgba(255, 87, 34, 0.2);
}

.future-icon {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 87, 34, 0.08);
    border: 1px solid rgba(255, 87, 34, 0.15);
    flex-shrink: 0;
}

.future-content {
    flex: 1;
}

.future-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.future-card p {
    color: var(--gray);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.future-metrics {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.future-metrics span {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.4rem 0.8rem;
    background: rgba(255, 87, 34, 0.05);
    border: 1px solid rgba(255, 87, 34, 0.1);
    color: var(--accent);
}

.footer {
    padding: 5rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand .brand {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 2px;
}

.footer-brand p {
    color: var(--gray);
    margin-top: 0.5rem;
    font-size: 0.85rem;
    letter-spacing: 2px;
}

.footer-links {
    display: flex;
    gap: 2.5rem;
}

.footer-links a {
    color: var(--gray);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-copy {
    color: var(--gray);
    font-size: 0.75rem;
    opacity: 0.5;
}

.back-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 45px;
    height: 45px;
    background: var(--accent);
    color: var(--black);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-top:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .nav {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .timeline-track::before {
        left: 15px;
    }

    .timeline-item,
    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        flex-direction: column;
        padding-left: 45px;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item::before {
        left: 15px;
    }

    .timeline-item:nth-child(odd) .year,
    .timeline-item:nth-child(even) .year {
        margin: 0 0 0.5rem 0;
        font-size: 2rem;
        min-width: auto;
    }

    .timeline-item:nth-child(odd) .tags {
        justify-content: flex-start;
    }

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

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

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}