:root {
    --bg-0: #0a0e14;
    --bg-1: #111c2c;
    --panel: rgba(11, 17, 27, 0.74);
    --panel-strong: rgba(13, 20, 33, 0.92);
    --line: rgba(167, 186, 214, 0.22);
    --line-soft: rgba(167, 186, 214, 0.12);
    --text-main: #edf3ff;
    --text-muted: #b0c1dd;
    --accent-a: #55d6ff;
    --accent-b: #ff9a5a;
    --accent-c: #8ff5b0;
    --shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
    --radius-lg: 28px;
    --radius-md: 18px;
    --font-display: 'Syne', sans-serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background:
        radial-gradient(1200px 700px at 80% -15%, rgba(85, 214, 255, 0.14), transparent 60%),
        radial-gradient(900px 500px at 10% 20%, rgba(255, 154, 90, 0.1), transparent 65%),
        linear-gradient(165deg, var(--bg-0), var(--bg-1));
    min-height: 100vh;
    overflow-x: hidden;
}

.noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.1;
    z-index: -1;
    background-image: radial-gradient(rgba(255, 255, 255, 0.6) 0.45px, transparent 0.45px);
    background-size: 3px 3px;
}

#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.45;
}

h1,
h2,
h3 {
    font-family: var(--font-display);
    letter-spacing: -0.03em;
}

a {
    color: inherit;
}

.mono {
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

.container {
    width: min(1160px, 92vw);
    margin: 0 auto;
}

.section {
    padding: 5.5rem 0;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent-a);
    margin-bottom: 0.85rem;
}

.title-lg {
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.02;
}

.hero-desc {
    color: var(--text-muted);
    font-size: 1.06rem;
    line-height: 1.66;
}

.glass {
    background: var(--panel);
    border: 1px solid var(--line-soft);
    backdrop-filter: blur(14px);
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid var(--line-soft);
}

.nav-container {
    width: min(1220px, 96vw);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 78px;
    gap: 1rem;
}

.logo {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.logo-img {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    object-fit: cover;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.18rem;
    font-weight: 700;
}

.highlight {
    color: var(--accent-a);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.25s ease;
}

.nav-links a:hover,
.nav-links a.nav-item-active {
    color: var(--text-main);
}

.nav-actions {
    display: flex;
    gap: 0.65rem;
}

.menu-toggle {
    display: none;
    width: 42px;
    height: 42px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 10px;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: var(--text-main);
}

.btn {
    border: 1px solid transparent;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.72rem 1.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    color: #081018;
    background: linear-gradient(100deg, var(--accent-a), #8fe8ff 55%, var(--accent-c));
    box-shadow: 0 8px 28px rgba(96, 220, 255, 0.35);
}

.btn-secondary {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--line);
}

.btn-secondary:hover {
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-xl {
    padding: 0.93rem 1.5rem;
    font-size: 0.96rem;
}

.hero {
    padding: 4.2rem 0 3.6rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: stretch;
}

.hero-copy {
    padding-right: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5.4rem);
    line-height: 0.95;
    margin-bottom: 1.2rem;
}

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

.hero-btns {
    margin-top: 2rem;
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.tech-strip {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--text-muted);
}

.tech-logo {
    height: 24px;
    width: auto;
    opacity: 0.95;
}

.walrus-logo {
    height: 26px;
}

.invert-on-dark {
    filter: invert(1) brightness(1.3) contrast(0.92);
}

.hero-panel {
    background: var(--panel-strong);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 1.1rem;
    box-shadow: var(--shadow);
}

.hero-panel header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.status-pill {
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--accent-c);
    border: 1px solid rgba(143, 245, 176, 0.3);
    border-radius: 999px;
    padding: 0.3rem 0.58rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
}

.metric-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--line-soft);
    border-radius: 14px;
    padding: 0.82rem;
}

.metric-card p {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.metric-card strong {
    font-size: 1.25rem;
}

.signal-list {
    margin-top: 0.95rem;
    display: grid;
    gap: 0.4rem;
    font-size: 0.83rem;
    color: var(--text-muted);
}

.signal-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--accent-c);
    margin-right: 0.35rem;
    box-shadow: 0 0 16px rgba(143, 245, 176, 0.7);
}

.section-header {
    margin-bottom: 1.5rem;
}

.center {
    text-align: center;
}

.pipeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.9rem;
}

.pipeline-step {
    background: rgba(13, 20, 33, 0.86);
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
    padding: 1.15rem;
    min-height: 220px;
}

.step-index {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-a);
}

.pipeline-step h3 {
    margin: 0.3rem 0 0.7rem;
    font-size: 1.44rem;
}

.pipeline-step p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 0.92rem;
}

.pipeline-step code {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--accent-b);
    padding: 0.24rem 0.48rem;
    border-radius: 999px;
    background: rgba(255, 154, 90, 0.12);
    border: 1px solid rgba(255, 154, 90, 0.34);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.product-card {
    background: linear-gradient(170deg, rgba(18, 28, 45, 0.92), rgba(12, 18, 28, 0.92));
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-lg);
    padding: 1.3rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.product-card header {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.product-card h3 {
    font-size: 1.8rem;
    line-height: 1.06;
}

.product-card p {
    color: var(--text-muted);
    line-height: 1.62;
    margin-bottom: 0.5rem;
}

.economics-wrap {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 1rem;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    background: rgba(13, 20, 33, 0.74);
}

.economics-list {
    display: grid;
    gap: 0.7rem;
}

.economics-list p {
    border: 1px solid var(--line-soft);
    border-radius: 12px;
    padding: 0.8rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.economics-list span {
    color: var(--accent-a);
    font-family: var(--font-mono);
    margin-right: 0.5rem;
}

.cta-section {
    padding-top: 3rem;
}

.cta-panel {
    border-radius: calc(var(--radius-lg) + 2px);
    border: 1px solid rgba(85, 214, 255, 0.2);
    background: linear-gradient(140deg, rgba(85, 214, 255, 0.1), rgba(255, 154, 90, 0.1) 60%, rgba(143, 245, 176, 0.08));
    padding: 1.6rem;
}

.cta-panel p {
    margin-top: 0.7rem;
    color: var(--text-muted);
}

.footer {
    border-top: 1px solid var(--line-soft);
    margin-top: 3.2rem;
    padding: 3rem 0;
}

.center-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
}

.footer-brand-centered {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.footer-logo {
    width: 36px;
    height: 36px;
    object-fit: cover;
    border-radius: 10px;
}

.footer-nav-centered {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    color: var(--text-muted);
}

.footer-nav-centered a {
    text-decoration: none;
}

.footer-nav-centered a:hover {
    color: var(--text-main);
}

.footer-bottom {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Legacy/shared helpers for demo.html + download.html */
.full-height {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.bento-card {
    border-radius: var(--radius-md);
    padding: 1.15rem;
    border: 1px solid var(--line-soft);
    background: rgba(13, 20, 33, 0.8);
}

.span-2 {
    grid-column: span 2;
}

.card-icon {
    font-size: 1.9rem;
    margin-bottom: 0.8rem;
}

.upload-zone {
    border: 1px dashed rgba(85, 214, 255, 0.45);
    border-radius: 14px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
}

.upload-zone.dragover,
.upload-zone:hover {
    background: rgba(85, 214, 255, 0.08);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.14);
    border-radius: 999px;
    margin-top: 1rem;
    overflow: hidden;
    display: none;
}

.progress-fill {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-a), var(--accent-c));
}

.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .hero-grid,
    .pipeline,
    .product-grid,
    .economics-wrap {
        grid-template-columns: 1fr;
    }

    .hero-copy {
        padding-right: 0;
    }
}

@media (max-width: 840px) {
    .menu-toggle {
        display: inline-block;
    }

    .nav-actions {
        display: none;
    }

    .nav-links {
        position: absolute;
        top: 78px;
        left: 2vw;
        right: 2vw;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        background: rgba(10, 16, 26, 0.96);
        border: 1px solid var(--line);
        border-radius: 14px;
        padding: 0.9rem;
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links a {
        width: 100%;
        padding: 0.35rem 0;
    }

    .hero {
        padding-top: 2.8rem;
    }

    .hero-title {
        line-height: 1;
    }

    .section {
        padding: 4.2rem 0;
    }

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

    .span-2 {
        grid-column: span 1;
    }
}