:root {
    --bg-main: #050b1a;
    --bg-alt: rgba(15, 28, 52, 0.6);
    --card-bg: rgba(18, 34, 66, 0.85);
    --border-glow: rgba(107, 229, 255, 0.5);
    --accent: #6be5ff;
    --accent-strong: #4cf4c5;
    --accent-secondary: #9b5de5;
    --text-primary: #f4f6ff;
    --text-secondary: rgba(236, 241, 255, 0.74);
    --text-muted: rgba(199, 210, 255, 0.5);
    --max-width: 1200px;
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
    --shadow-soft: 0 30px 60px rgba(0, 0, 0, 0.35);
    --shadow-card: 0 18px 38px rgba(6, 12, 29, 0.55);
    --gradient-accent: linear-gradient(135deg, rgba(107, 229, 255, 0.18), rgba(155, 93, 229, 0.16));
    --gradient-strong: linear-gradient(135deg, #6be5ff, #9b5de5);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", sans-serif;
    background: radial-gradient(circle at top left, rgba(107, 229, 255, 0.12), transparent 40%),
                radial-gradient(circle at bottom right, rgba(155, 93, 229, 0.16), transparent 45%),
                var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

img, video {
    max-width: 100%;
    display: block;
}

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

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

.container {
    width: min(92vw, var(--max-width));
    margin: 0 auto;
}

.section {
    padding: 120px 0;
    position: relative;
}

.section h2 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    margin-bottom: 32px;
    letter-spacing: -0.015em;
}

.section p {
    margin: 0 0 18px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(18px);
    background: rgba(5, 11, 26, 0.82);
    border-bottom: 1px solid rgba(107, 229, 255, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-strong);
    color: #040916;
    font-size: 1.4rem;
    box-shadow: 0 0 25px rgba(107, 229, 255, 0.45);
}

.main-nav {
    display: flex;
    gap: 24px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.main-nav a {
    position: relative;
    padding: 6px 0;
    transition: color 0.3s ease;
}

.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: var(--gradient-strong);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
    transform: scaleX(1);
}

.nav-cta {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(107, 229, 255, 0.5);
    color: var(--accent);
    transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

.nav-cta:hover {
    background: rgba(107, 229, 255, 0.12);
    box-shadow: 0 0 20px rgba(107, 229, 255, 0.35);
}

.hero-section {
    padding-top: 160px;
    padding-bottom: 120px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 48px;
    align-items: center;
}

.hero-text {
    grid-column: span 6;
}

.hero-text h1 {
    font-size: clamp(2.6rem, 5vw, 3.6rem);
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.08rem;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 620px;
}

.hero-condition {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    padding: 18px 22px;
    border: 1px solid rgba(107, 229, 255, 0.35);
    border-radius: var(--radius-md);
    background: rgba(10, 20, 41, 0.65);
    box-shadow: 0 18px 60px rgba(6, 14, 33, 0.45);
    margin-bottom: 32px;
}

.hero-condition strong {
    color: var(--accent);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.btn-primary {
    background: var(--gradient-strong);
    color: #040916;
    box-shadow: 0 18px 30px rgba(107, 229, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 26px 40px rgba(155, 93, 229, 0.38);
}

.btn-secondary {
    background: rgba(107, 229, 255, 0.1);
    color: var(--accent);
    border: 1px solid rgba(107, 229, 255, 0.4);
}

.btn-secondary:hover {
    background: rgba(107, 229, 255, 0.18);
    transform: translateY(-2px);
}

.hero-visual {
    grid-column: span 6;
    position: relative;
    min-height: 520px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: radial-gradient(circle at center, rgba(107, 229, 255, 0.06), rgba(7, 13, 28, 0.82));
    border: 1px solid rgba(107, 229, 255, 0.18);
    box-shadow: var(--shadow-soft);
}

#neuroCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.visual-overlay {
    position: absolute;
    bottom: 20px;
    right: 24px;
    padding: 10px 16px;
    background: rgba(4, 13, 26, 0.65);
    border-radius: 999px;
    border: 1px solid rgba(107, 229, 255, 0.3);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.text-columns {
    columns: 2;
    column-gap: 40px;
    font-size: 1.02rem;
}

.text-columns p {
    break-inside: avoid;
    padding: 0 0 24px;
}

.network-visual {
    margin-top: 60px;
    position: relative;
    border-radius: var(--radius-lg);
    padding: 50px 30px;
    background: rgba(12, 22, 42, 0.65);
    border: 1px solid rgba(107, 229, 255, 0.22);
    overflow: hidden;
}

.network-visual svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    stroke: rgba(107, 229, 255, 0.35);
    stroke-width: 2;
    stroke-linecap: round;
    mix-blend-mode: screen;
}

.network-visual .node {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 999px;
    background: rgba(107, 229, 255, 0.12);
    border: 1px solid rgba(107, 229, 255, 0.5);
    margin-right: 20px;
    font-weight: 600;
}

.network-visual .node-author {
    background: rgba(155, 93, 229, 0.18);
    border-color: rgba(155, 93, 229, 0.65);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
    align-items: start;
}

.cases-column h3 {
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.14em;
    color: var(--accent);
    margin-bottom: 20px;
}

.quote-card {
    padding: 20px 24px;
    margin-bottom: 18px;
    border-radius: var(--radius-sm);
    background: rgba(11, 21, 42, 0.75);
    border: 1px solid rgba(107, 229, 255, 0.18);
    box-shadow: var(--shadow-card);
    color: var(--text-secondary);
    font-style: italic;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 18px;
}

.metric {
    padding: 18px 20px;
    border-radius: var(--radius-sm);
    background: rgba(11, 24, 47, 0.7);
    border: 1px solid rgba(107, 229, 255, 0.1);
}

.metric-title {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.metric-value {
    display: block;
    margin-top: 6px;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--accent);
}

.media-thumbs {
    display: flex;
    gap: 16px;
    margin-top: 26px;
}

.thumb {
    flex: 1;
    padding: 16px;
    border-radius: var(--radius-sm);
    background: rgba(9, 18, 36, 0.72);
    border: 1px solid rgba(107, 229, 255, 0.12);
    text-align: center;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

.thumb-video {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--accent);
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.audience-card {
    padding: 32px 28px;
    border-radius: var(--radius-md);
    background: rgba(11, 22, 45, 0.78);
    border: 1px solid rgba(107, 229, 255, 0.14);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.audience-card:hover {
    transform: translateY(-6px);
    border-color: rgba(107, 229, 255, 0.35);
}

.audience-card .icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(107, 229, 255, 0.14);
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    color: var(--accent);
}

.audience-note {
    margin-top: 36px;
    padding: 18px 22px;
    border-radius: var(--radius-md);
    border: 1px dashed rgba(107, 229, 255, 0.35);
    background: rgba(9, 19, 38, 0.6);
    color: var(--text-secondary);
}

.timeline {
    position: relative;
    margin-top: 60px;
    display: grid;
    gap: 28px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, rgba(107, 229, 255, 0.5), rgba(155, 93, 229, 0.2));
}

.timeline-item {
    position: relative;
    margin-left: 40px;
    padding: 22px 26px;
    border-radius: var(--radius-md);
    background: rgba(12, 23, 46, 0.75);
    border: 1px solid rgba(107, 229, 255, 0.16);
    box-shadow: var(--shadow-card);
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: -28px;
    top: 28px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient-strong);
    box-shadow: 0 0 18px rgba(107, 229, 255, 0.6);
}

.step {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 24px;
}

.benefit-card {
    padding: 30px 28px;
    border-radius: var(--radius-md);
    background: rgba(10, 20, 41, 0.8);
    border: 1px solid rgba(107, 229, 255, 0.16);
    box-shadow: var(--shadow-card);
}

.benefit-card h3 {
    margin-top: 0;
    margin-bottom: 18px;
    font-weight: 600;
}

.benefit-card ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-secondary);
}

.lab-section {
    background: radial-gradient(circle at center, rgba(107, 229, 255, 0.08), rgba(5, 11, 26, 0.9));
    text-align: center;
}

.lab-map {
    margin: 60px auto 0;
    position: relative;
    width: min(520px, 80vw);
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(107, 229, 255, 0.3), transparent 60%),
                radial-gradient(circle at 70% 70%, rgba(155, 93, 229, 0.28), transparent 65%),
                rgba(6, 16, 33, 0.9);
    border: 1px solid rgba(107, 229, 255, 0.24);
    overflow: hidden;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.4);
}

.globe {
    position: absolute;
    inset: 12%;
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(107, 229, 255, 0.35), rgba(5, 11, 26, 0.9));
    filter: blur(2px);
}

.pulse {
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 20px rgba(107, 229, 255, 0.8);
    animation: pulse 4s infinite;
}

.pulse-1 { top: 28%; left: 32%; animation-delay: 0s; }
.pulse-2 { top: 62%; right: 26%; animation-delay: 1.2s; }
.pulse-3 { bottom: 22%; left: 52%; animation-delay: 2.4s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.7); opacity: 0; }
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.methodology-grid h3 {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 18px;
}

.methodology-grid ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-secondary);
}

.goal-callout {
    margin-top: 34px;
    padding: 20px 24px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(107, 229, 255, 0.28);
    background: rgba(9, 18, 37, 0.7);
    color: var(--text-secondary);
}

.deadline-section {
    background: rgba(5, 12, 26, 0.9);
}

.deadline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    margin: 50px 0;
}

.deadline-item {
    padding: 24px;
    border-radius: var(--radius-md);
    background: rgba(10, 20, 38, 0.78);
    border: 1px solid rgba(107, 229, 255, 0.16);
    text-align: center;
}

.deadline-item h3 {
    margin-bottom: 10px;
    font-size: 1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.deadline-item.highlight {
    border-color: rgba(107, 229, 255, 0.42);
    background: rgba(8, 18, 38, 0.92);
    box-shadow: 0 0 28px rgba(107, 229, 255, 0.32);
}

#slotCounter {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent);
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin-bottom: 32px;
}

.countdown-unit {
    width: 110px;
    padding: 22px 0;
    border-radius: var(--radius-sm);
    background: rgba(8, 16, 33, 0.78);
    border: 1px solid rgba(107, 229, 255, 0.18);
    text-align: center;
    box-shadow: var(--shadow-card);
}

.countdown-unit .count {
    display: block;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--accent);
}

.countdown-unit .label {
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.cta-cards {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.cta-card {
    padding: 36px 32px;
    border-radius: var(--radius-md);
    background: rgba(11, 22, 42, 0.8);
    border: 1px solid rgba(107, 229, 255, 0.16);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-section details {
    background: rgba(9, 19, 38, 0.76);
    border-radius: var(--radius-md);
    border: 1px solid rgba(107, 229, 255, 0.18);
    margin-bottom: 16px;
    padding: 18px 22px;
    transition: border-color 0.3s ease;
}

.faq-section summary {
    cursor: pointer;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.faq-section details[open] {
    border-color: rgba(107, 229, 255, 0.38);
    box-shadow: 0 16px 30px rgba(6, 14, 31, 0.45);
}

.faq-section p {
    color: var(--text-secondary);
    margin-top: 12px;
}

.author-section {
    background: rgba(6, 15, 32, 0.92);
}

.author-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: center;
}

.author-media {
    display: grid;
    gap: 20px;
}

.author-photo {
    width: 100%;
    aspect-ratio: 3 / 4;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(107, 229, 255, 0.18), rgba(155, 93, 229, 0.22));
    border: 1px solid rgba(107, 229, 255, 0.3);
    display: grid;
    place-items: center;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

.author-video {
    padding: 16px 22px;
    border-radius: 999px;
    background: rgba(12, 24, 46, 0.8);
    border: 1px solid rgba(107, 229, 255, 0.18);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--accent);
}

.author-content blockquote {
    margin: 24px 0 0;
    padding-left: 18px;
    border-left: 3px solid rgba(107, 229, 255, 0.4);
    color: var(--accent);
    font-size: 1.1rem;
    font-style: italic;
}

.site-footer {
    padding: 60px 0 32px;
    background: rgba(4, 8, 18, 0.96);
    border-top: 1px solid rgba(107, 229, 255, 0.12);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
}

.site-footer h3 {
    font-size: 1rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.site-footer ul {
    list-style: none;
    margin: 0;
    padding: 0;
    color: var(--text-secondary);
}

.site-footer li + li {
    margin-top: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(107, 229, 255, 0.12);
    margin-top: 40px;
    padding-top: 24px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

/* Utility */
.section::after {
    content: "";
    position: absolute;
    inset: 20% 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(107, 229, 255, 0.08), transparent);
    pointer-events: none;
}

.section:first-of-type::after,
.section:last-of-type::after {
    display: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-text,
    .hero-visual {
        grid-column: auto;
    }

    .hero-visual {
        min-height: 420px;
    }

    .text-columns {
        columns: 1;
    }
}

@media (max-width: 900px) {
    .main-nav {
        display: none;
    }

    .section {
        padding: 90px 0;
    }

    .countdown {
        gap: 16px;
    }

    .countdown-unit {
        width: 82px;
        padding: 18px 0;
    }

    .countdown-unit .count {
        font-size: 1.6rem;
    }
}

@media (max-width: 600px) {
    .hero-section {
        padding-top: 120px;
    }

    .hero-condition {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
    }

    .media-thumbs {
        flex-direction: column;
    }

    .timeline::before {
        left: 12px;
    }

    .timeline-item {
        margin-left: 30px;
    }
}