:root {
    --bg: #050303;
    --bg-deep: #010000;
    --panel: rgba(18, 10, 9, 0.88);
    --panel-soft: rgba(28, 15, 13, 0.74);
    --line: rgba(255, 190, 140, 0.09);
    --line-strong: rgba(255, 190, 140, 0.18);
    --text: #fff4ee;
    --muted: #c8ada1;
    --muted-soft: #80665d;
    --purple: #8b2f2f;
    --cyan: #ff9f43;
    --green: #ffcf7a;
    --warning: #ffb347;
    --danger: #ff4d2e;
    --radius: 22px;
    --max: 1180px;
    --content-max: 960px;
    --outer-gutter: clamp(20px, 4vw, 44px);
    --section-space: clamp(58px, 8vw, 92px);
    --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: var(--bg-deep);
}

body {
    margin: 0;
    font-family: var(--sans);
    color: var(--text);
    background: radial-gradient(circle at 16% 0%, rgba(255, 77, 46, 0.16), transparent 34%),
    radial-gradient(circle at 86% 12%, rgba(255, 159, 67, 0.10), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(139, 47, 47, 0.16), transparent 42%),
    linear-gradient(180deg, #090302 0%, #050303 44%, #010000 100%);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(circle at 50% 10%, black 0%, transparent 72%);
    opacity: 0.48;
    z-index: -1;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(rgba(255, 255, 255, 0.018) 50%, transparent 50%);
    background-size: 100% 4px;
    opacity: 0.08;
    z-index: 100;
}

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

p {
    color: var(--muted);
    line-height: 1.72;
    margin: 0;
}

strong {
    color: var(--text);
}

.container {
    width: min(calc(100% - (var(--outer-gutter) * 2)), var(--max));
    margin: 0 auto;
}

.narrow {
    max-width: var(--content-max);
    margin: 0 auto;
}

.stack > * + * {
    margin-top: 24px;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(5, 3, 3, 0.76);
    border-bottom: 1px solid var(--line);
}

.nav-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 18px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--mono);
    font-size: 0.84rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 244, 238, 0.94);
}

.brand-mark {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background: var(--warning);
    box-shadow: 0 0 22px rgba(255, 179, 71, 0.9);
    transform: rotate(45deg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--muted);
    font-size: 0.92rem;
}

.nav-links a {
    transition: color 0.2s ease;
}

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

.hero {
    position: relative;
    padding: clamp(92px, 13vw, 152px) 0 clamp(72px, 9vw, 112px);
    overflow: hidden;
}

.hero-shell {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(300px, 0.82fr);
    gap: clamp(36px, 6vw, 72px);
    align-items: center;
}

.status-line {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid rgba(255, 159, 67, 0.26);
    border-radius: 999px;
    background: rgba(255, 77, 46, 0.08);
    color: rgba(255, 219, 184, 0.94);
    font-family: var(--mono);
    font-size: 0.76rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.pulse {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--warning);
    box-shadow: 0 0 18px rgba(255, 179, 71, 0.9);
}

h1 {
    margin: 0;
    font-size: clamp(3.25rem, 7.4vw, 7.1rem);
    line-height: 0.94;
    letter-spacing: -0.075em;
    max-width: 920px;
}

.hero-gradient {
    display: block;
    background: linear-gradient(135deg, #fff4ee 0%, #ffcf7a 30%, #ff6a3d 62%, #8b1e1e 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-kicker {
    margin-top: 30px;
    max-width: 700px;
    font-size: clamp(1.08rem, 1.8vw, 1.36rem);
    line-height: 1.58;
    color: rgba(255, 244, 238, 0.92);
}

.hero-copy {
    max-width: 720px;
    font-size: 1.02rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 34px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 13px 20px;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid transparent;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.button-primary {
    background: linear-gradient(135deg, #ffb347, #ff4d2e);
    color: #120403;
    box-shadow: 0 20px 60px rgba(255, 77, 46, 0.18);
}

.button-secondary {
    color: var(--text);
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.035);
}

.terminal-panel {
    position: relative;
    border-radius: 28px;
    border: 1px solid var(--line-strong);
    background: radial-gradient(circle at 100% 0%, rgba(255, 77, 46, 0.15), transparent 28%),
    radial-gradient(circle at 0% 100%, rgba(255, 179, 71, 0.08), transparent 32%),
    linear-gradient(180deg, rgba(24, 12, 10, 0.94), rgba(7, 4, 3, 0.96));
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.46);
    overflow: hidden;
}

.terminal-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    color: var(--muted-soft);
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
}

.terminal-body {
    padding: 22px;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.8;
    color: rgba(255, 244, 238, 0.86);
}

.terminal-row {
    display: grid;
    grid-template-columns: 128px 1fr;
    gap: 14px;
    padding: 9px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.045);
}

.terminal-row:last-child {
    border-bottom: 0;
}

.terminal-key {
    color: var(--muted-soft);
}

.terminal-value {
    color: rgba(255, 244, 238, 0.92);
}

.ok {
    color: #ffcf7a;
}

.warn {
    color: var(--warning);
}

.danger {
    color: var(--danger);
}

section {
    padding: var(--section-space) 0;
}

.section-head {
    max-width: 780px;
    margin-bottom: 30px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--warning);
    font-family: var(--mono);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h2 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 1.02;
    letter-spacing: -0.055em;
    text-wrap: balance;
}

h3 {
    margin: 0;
    font-size: 1.18rem;
    letter-spacing: -0.02em;
}

.panel {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: radial-gradient(circle at 100% 0%, rgba(255, 77, 46, 0.10), transparent 30%),
    radial-gradient(circle at 0% 100%, rgba(255, 179, 71, 0.055), transparent 34%),
    linear-gradient(180deg, rgba(22, 11, 9, 0.82), rgba(8, 4, 3, 0.9));
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34),
    inset 0 1px 0 rgba(255, 224, 190, 0.04);
}

.problem-panel,
.lab-panel {
    padding: clamp(26px, 4vw, 44px);
}

.problem-grid,
.lab-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(28px, 5vw, 54px);
    align-items: start;
}

.failure-list {
    display: grid;
    gap: 12px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.failure-list li {
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.032);
    color: rgba(255, 244, 238, 0.9);
    font-family: var(--mono);
    font-size: 0.9rem;
}

.thesis {
    font-size: clamp(1.32rem, 2.6vw, 2.05rem);
    line-height: 1.35;
    letter-spacing: -0.03em;
    color: rgba(255, 244, 238, 0.96);
    max-width: 940px;
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.system-card {
    position: relative;
    padding: 22px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
}

.system-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(255, 179, 71, 0.09), transparent 42%),
    linear-gradient(180deg, rgba(255, 77, 46, 0.035), transparent 46%);
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.system-card:hover::before {
    opacity: 1;
}

.system-label {
    font-family: var(--mono);
    color: var(--muted-soft);
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.system-card p {
    font-size: 0.94rem;
    line-height: 1.65;
}

.system-link {
    margin-top: 24px;
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--warning);
    letter-spacing: 0.04em;
}

.research-grid,
.failure-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.research-item,
.failure-item {
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.075);
    background: rgba(255, 255, 255, 0.03);
    font-family: var(--mono);
    font-size: 0.82rem;
    color: rgba(255, 244, 238, 0.88);
    min-height: 82px;
    display: flex;
    align-items: flex-end;
}

.failure-item {
    border-color: rgba(255, 107, 138, 0.16);
    color: rgba(255, 211, 220, 0.9);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.principle {
    padding: 22px;
}

.principle-code {
    display: inline-block;
    margin-bottom: 16px;
    font-family: var(--mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    color: var(--green);
    text-transform: uppercase;
}

.principle p {
    margin-top: 10px;
    font-size: 0.94rem;
}

.diagram {
    padding: clamp(24px, 4vw, 40px);
    overflow: hidden;
}

.flow {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-top: 28px;
}

.flow-step {
    position: relative;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    min-height: 158px;
}

.flow-step:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--warning);
    font-family: var(--mono);
    z-index: 2;
}

.flow-step span {
    display: block;
    margin-bottom: 12px;
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--muted-soft);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.flow-step strong {
    display: block;
    margin-bottom: 8px;
    font-size: 1rem;
}

.flow-step p {
    font-size: 0.88rem;
    line-height: 1.55;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(28px, 5vw, 56px);
    align-items: center;
}

.contact-panel {
    padding: clamp(28px, 5vw, 48px);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: center;
}

.email {
    display: inline-block;
    margin-top: 16px;
    font-family: var(--mono);
    color: var(--warning);
}

.footer {
    border-top: 1px solid var(--line);
    padding: 26px 0 34px;
    color: var(--muted-soft);
    font-size: 0.84rem;
    line-height: 1.6;
}

@media (max-width: 1050px) {
    .hero-shell,
    .problem-grid,
    .lab-grid,
    .split,
    .contact-panel {
        grid-template-columns: 1fr;
    }

    .system-grid,
    .research-grid,
    .failure-grid,
    .flow {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .terminal-panel {
        max-width: 640px;
    }

    .flow-step:not(:last-child)::after {
        display: none;
    }
}

@media (max-width: 720px) {
    .nav-inner {
        grid-template-columns: 1fr;
    }

    .nav-links {
        flex-wrap: wrap;
        gap: 14px;
    }

    .system-grid,
    .research-grid,
    .failure-grid,
    .flow,
    .principles-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: clamp(3rem, 17vw, 4.8rem);
    }

    .hero-actions {
        align-items: stretch;
    }

    .button {
        width: 100%;
    }

    .terminal-row {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}

a.panel {
    display: block;
    color: inherit;
    text-decoration: none;
}

a.panel:hover {
    transform: translateY(-2px);
}