:root {
    --bg: #081018;
    --bg-soft: #0d1721;
    --bg-panel: rgba(12, 20, 31, 0.78);
    --bg-panel-strong: rgba(13, 22, 34, 0.94);
    --line: rgba(126, 171, 204, 0.16);
    --line-strong: rgba(126, 171, 204, 0.28);
    --text: #edf4fb;
    --text-soft: #b8cad9;
    --text-dim: #7f93a3;
    --cyan: #74d7ff;
    --amber: #f3ba4e;
    --red: #f36e6e;
    --green: #58d89a;
    --shadow: 0 22px 80px rgba(0, 0, 0, 0.38);
    --radius: 24px;
    --content-width: min(1320px, calc(100vw - 136px));
    --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Avenir Next", "Segoe UI", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 15% 12%, rgba(116, 215, 255, 0.14), transparent 26%),
        radial-gradient(circle at 84% 18%, rgba(243, 186, 78, 0.14), transparent 22%),
        linear-gradient(180deg, #09111a 0%, #081018 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 85%);
}

a {
    color: inherit;
}

code,
pre {
    font-family: "SFMono-Regular", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.progress-rail {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.03);
    z-index: 50;
}

.progress-bar {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--cyan), var(--amber));
    box-shadow: 0 0 18px rgba(116, 215, 255, 0.4);
    transform-origin: left center;
}

.deck {
    width: 100%;
}

.chapter {
    width: var(--content-width);
    margin: 0 auto;
    padding: 124px 0 108px;
    position: relative;
}

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(380px, 0.95fr);
    align-items: center;
    gap: 64px;
    padding-top: 84px;
}

.hero-copy h1,
.chapter-heading h2,
.close-shell h2 {
    margin: 0;
    line-height: 0.94;
    letter-spacing: -0.05em;
}

.hero-copy h1 {
    font-size: clamp(3.8rem, 8vw, 7.2rem);
    max-width: 10ch;
}

.lead,
.chapter-heading p,
.close-shell p {
    color: var(--text-soft);
    font-size: clamp(1.08rem, 1.6vw, 1.34rem);
    line-height: 1.55;
    max-width: 38rem;
}

.aside {
    margin: 24px 0 0;
    font-family: var(--serif);
    font-size: 1.28rem;
    color: #f7dcc0;
    max-width: 30rem;
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.hero-points span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.hero-points span {
    padding: 9px 12px;
    border-radius: 999px;
    border: 1px solid rgba(116, 215, 255, 0.18);
    background: rgba(13, 25, 37, 0.54);
    color: var(--text-soft);
}

.hero-visual {
    position: relative;
}

.terminal-stack {
    position: relative;
    min-height: 580px;
}

.terminal-card {
    position: absolute;
    border-radius: 22px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(18, 29, 43, 0.98), rgba(11, 18, 27, 0.92));
    box-shadow: var(--shadow);
    overflow: hidden;
}

.terminal-card-primary {
    inset: 0 26px 110px 0;
    transform: rotate(-3deg);
}

.terminal-card-secondary {
    width: 78%;
    right: 0;
    bottom: 0;
    transform: rotate(5deg);
}

.terminal-top {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
}

.terminal-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
}

.terminal-dot:first-child {
    background: rgba(243, 110, 110, 0.72);
}

.terminal-dot:nth-child(2) {
    background: rgba(243, 186, 78, 0.72);
}

.terminal-dot:nth-child(3) {
    background: rgba(88, 216, 154, 0.72);
}

.terminal-title {
    margin-left: 10px;
    color: var(--text-dim);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.terminal-body {
    padding: 22px 24px 26px;
}

.terminal-line {
    padding: 9px 0;
    color: var(--text-soft);
    font-size: 0.98rem;
    line-height: 1.5;
}

.terminal-line.prompt {
    color: var(--text);
}

.terminal-line.warning {
    color: var(--amber);
}

.terminal-line.error {
    color: #f3c2c2;
}

.terminal-line.quiet {
    color: var(--text-dim);
}

.next-link {
    position: absolute;
    left: 0;
    bottom: 28px;
    padding: 10px 14px;
    text-decoration: none;
    border-bottom: 1px solid rgba(116, 215, 255, 0.28);
    color: var(--text-soft);
}

.chapter-heading {
    margin-bottom: 42px;
}

.chapter-heading h2,
.close-shell h2 {
    font-size: clamp(2.8rem, 6vw, 5.3rem);
    max-width: 12ch;
}

.failures {
    padding-top: 48px;
    padding-bottom: 138px;
}

.failure-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.incident-film {
    border-radius: 30px;
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(15, 25, 37, 0.88), rgba(10, 18, 28, 0.96));
    box-shadow: var(--shadow);
    padding: 30px;
}

.incident-stage {
    --incident-loop: 8s;
    position: relative;
    border-radius: 24px;
    border: 1px solid rgba(126, 171, 204, 0.16);
    background:
        radial-gradient(circle at 10% 0%, rgba(116, 215, 255, 0.12), transparent 28%),
        radial-gradient(circle at 82% 10%, rgba(243, 186, 78, 0.1), transparent 24%),
        linear-gradient(180deg, rgba(12, 21, 32, 0.94), rgba(8, 14, 22, 0.98));
    padding: 18px 18px 20px;
    overflow: hidden;
}

.incident-stage::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
    transform: translateX(-120%);
    animation: incident-scan var(--incident-loop) ease-in-out infinite;
    pointer-events: none;
}

.incident-stage-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
    color: var(--text-dim);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.incident-stage-status {
    color: #ffcaca;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(243, 110, 110, 0.24);
    background: rgba(42, 19, 25, 0.7);
}

.incident-viewport {
    position: relative;
    min-height: 480px;
    border-radius: 20px;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(23, 36, 53, 0.98), rgba(10, 17, 26, 0.98));
    border: 1px solid rgba(126, 171, 204, 0.12);
}

.incident-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.32;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.82), transparent 100%);
}

.incident-terminal {
    position: absolute;
    left: 28px;
    top: 28px;
    width: calc(100% - 332px);
    border-radius: 22px;
    border: 1px solid rgba(126, 171, 204, 0.18);
    background: rgba(9, 16, 25, 0.88);
    box-shadow: 0 18px 52px rgba(0, 0, 0, 0.32);
    overflow: hidden;
}

.incident-terminal-top {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    border-bottom: 1px solid rgba(126, 171, 204, 0.12);
    background: rgba(255, 255, 255, 0.03);
}

.incident-terminal-title {
    margin-left: 10px;
    color: var(--text-dim);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.incident-context-chip {
    margin-left: auto;
    padding: 7px 11px;
    border-radius: 999px;
    border: 1px solid rgba(243, 110, 110, 0.28);
    background: rgba(46, 21, 28, 0.7);
    color: #ffd1d1;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    animation: context-pulse calc(var(--incident-loop) / 2) ease-in-out infinite;
}

.incident-terminal-body {
    padding: 18px 20px 20px;
}

.incident-line {
    font-family: "SFMono-Regular", Consolas, Menlo, monospace;
    font-size: 0.96rem;
    line-height: 1.6;
    color: var(--text-soft);
    padding: 6px 0;
}

.incident-line.quiet,
.incident-line.dim {
    color: var(--text-dim);
}

.incident-line.prompt {
    color: var(--text);
    font-size: 0.9rem;
}

.incident-line.alert {
    color: #ffb9b9;
}

.incident-command-text {
    display: inline-block;
    max-width: 0;
    overflow: hidden;
    vertical-align: bottom;
    white-space: nowrap;
    animation: command-type var(--incident-loop) steps(96, end) infinite;
}

.incident-command-text::after {
    content: "";
    display: inline-block;
    width: 8px;
    height: 1.05em;
    margin-left: 3px;
    vertical-align: -0.16em;
    background: var(--cyan);
    animation: caret-blink 900ms step-end infinite;
}

.incident-cluster-lane {
    position: absolute;
    right: 26px;
    top: 28px;
    width: 250px;
    display: grid;
    gap: 16px;
}

.incident-cluster {
    position: relative;
    min-height: 106px;
    padding: 18px 18px 16px;
    border-radius: 18px;
    border: 1px solid rgba(126, 171, 204, 0.14);
    background: rgba(12, 20, 31, 0.62);
    overflow: hidden;
    transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.incident-cluster.is-hot {
    transform: translateY(-3px);
    border-color: rgba(243, 110, 110, 0.34);
    background: rgba(33, 21, 30, 0.72);
}

.incident-cluster-tag {
    position: relative;
    z-index: 1;
    display: inline-flex;
    padding: 7px 11px;
    border-radius: 999px;
    border: 1px solid rgba(116, 215, 255, 0.24);
    color: #d8f1ff;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.incident-cluster-core,
.incident-cluster-ring,
.incident-cluster-cross {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.incident-cluster-core::before {
    content: "";
    position: absolute;
    right: 26px;
    bottom: 26px;
    width: 22px;
    height: 22px;
    border-radius: 8px;
    background: rgba(116, 215, 255, 0.88);
    box-shadow: 0 0 24px rgba(116, 215, 255, 0.22);
}

.incident-cluster-ring::before {
    content: "";
    position: absolute;
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    border: 2px solid rgba(243, 110, 110, 0.5);
    opacity: 0;
    transform: scale(0.7);
}

.incident-cluster-cross::before,
.incident-cluster-cross::after {
    content: "";
    position: absolute;
    right: 19px;
    bottom: 18px;
    width: 36px;
    height: 3px;
    border-radius: 999px;
    background: rgba(243, 110, 110, 0.95);
    opacity: 0;
}

.incident-cluster-cross::before {
    transform: rotate(45deg);
}

.incident-cluster-cross::after {
    transform: rotate(-45deg);
}

.incident-cluster.is-hot .incident-cluster-ring::before {
    animation: cluster-ring 1.35s ease-out infinite;
}

.incident-cluster.is-hot .incident-cluster-cross::before,
.incident-cluster.is-hot .incident-cluster-cross::after {
    animation: cluster-cross 1.35s ease-out infinite;
}

.incident-warning-card {
    position: absolute;
    left: 30px;
    bottom: 70px;
    width: min(360px, calc(100% - 320px));
    display: grid;
    gap: 6px;
    padding: 16px 18px;
    border-radius: 18px;
    border: 1px solid rgba(243, 186, 78, 0.16);
    background: rgba(18, 25, 36, 0.82);
    box-shadow: 0 16px 42px rgba(0, 0, 0, 0.26);
    animation: warning-float calc(var(--incident-loop) * 0.72) ease-in-out infinite;
    transition: border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.incident-warning-card.is-alert {
    border-color: rgba(243, 110, 110, 0.28);
    background: rgba(31, 18, 27, 0.84);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.34), 0 0 0 1px rgba(243, 110, 110, 0.08);
}

.incident-warning-kicker,
.incident-column-title {
    color: var(--amber);
    font-size: 0.76rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.incident-warning-card strong {
    font-size: 1.12rem;
}

.incident-warning-card span:last-child {
    color: var(--text-soft);
    line-height: 1.5;
}

.incident-stage-footer {
    position: absolute;
    left: 30px;
    right: 30px;
    bottom: 22px;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-dim);
    font-size: 0.74rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.failure-panel,
.diagnosis-card,
.proof-card,
.mode-panel,
.policy-panel,
.close-shell {
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(15, 25, 37, 0.88), rgba(10, 18, 28, 0.94));
    box-shadow: var(--shadow);
}

.failure-panel {
    padding: 28px;
    min-height: 100%;
}

.failure-stage {
    margin: 18px 0 20px;
    padding: 10px;
    border-radius: 22px;
    border: 1px solid rgba(126, 171, 204, 0.14);
    background:
        radial-gradient(circle at top left, rgba(116, 215, 255, 0.1), transparent 36%),
        linear-gradient(180deg, rgba(15, 24, 35, 0.86), rgba(10, 16, 24, 0.96));
    overflow: hidden;
}

.failure-stage::after {
    content: "";
    position: absolute;
    inset: -20% auto -20% -36%;
    width: 32%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
    transform: rotate(10deg);
    animation: stage-scan 7.8s ease-in-out infinite;
    pointer-events: none;
}

.failure-stage {
    position: relative;
}

.failure-stage svg {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 16px;
}

.failure-scene-svg .scene-operator,
.failure-scene-svg .scene-db,
.failure-scene-svg .scene-bubble,
.failure-scene-svg .scene-cluster,
.failure-scene-svg .scene-actor,
.failure-scene-svg .scene-connection-pill,
.failure-scene-svg .scene-token-card,
.failure-scene-svg .scene-workflow,
.failure-scene-svg .scene-terminal {
    transform-box: fill-box;
    transform-origin: center;
}

.scene-a .scene-operator,
.scene-b .scene-operator {
    animation: scene-bob 4.4s ease-in-out infinite;
}

.scene-a .scene-bubble,
.scene-b .scene-bubble,
.scene-c .scene-bubble {
    animation: bubble-float 5.4s ease-in-out infinite;
}

.scene-a .scene-db {
    animation: danger-pulse 3.4s ease-in-out infinite;
}

.scene-a .scene-connection-pill {
    animation: pill-flicker 3.2s linear infinite;
}

.scene-a .scene-warning-line {
    stroke-dasharray: 120;
    stroke-dashoffset: 120;
    animation: warning-draw 2.6s ease-out infinite;
}

.scene-b .scene-terminal,
.scene-c .scene-workflow,
.scene-a .scene-terminal {
    animation: console-glow 4.8s ease-in-out infinite;
}

.scene-b .scene-cluster {
    animation: cluster-sway 4.6s ease-in-out infinite;
}

.scene-b .cluster-right {
    animation-delay: 0.45s;
}

.scene-b .scene-strike,
.scene-b .scene-strike-heavy {
    animation: strike-flash 2.2s ease-in-out infinite;
}

.scene-b .scene-strike-heavy {
    animation-delay: 0.12s;
}

.scene-c .scene-token-card {
    animation: token-pulse 3.6s ease-in-out infinite;
}

.scene-c .scene-token-glow {
    animation: token-orbit 2.9s ease-in-out infinite;
    transform-box: fill-box;
    transform-origin: center;
}

.scene-c .scene-actor {
    animation: actor-rise 4.2s ease-in-out infinite;
}

.scene-c .actor-middle {
    animation-delay: 0.35s;
}

.scene-c .actor-right {
    animation-delay: 0.7s;
}

.scene-c .bubble-right {
    animation-delay: 0.4s;
}

.scene-a .scene-command-text,
.scene-b .scene-command-text,
.scene-c .scene-command-text {
    animation: text-flicker 4.1s steps(2, end) infinite;
}

.failure-panel h3,
.diagnosis-card h3,
.proof-card h3,
.mode-panel h3,
.flow-step h3 {
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.15;
}

.command-strip {
    margin: 20px 0 18px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(8, 15, 23, 0.9);
    border: 1px solid rgba(243, 110, 110, 0.18);
    color: #ffe5e5;
    font-family: Consolas, Menlo, monospace;
    line-height: 1.5;
}

.command-strip span {
    color: #d1a9a9;
}

.caption {
    color: var(--text-soft);
    margin: 0 0 18px;
    font-family: var(--serif);
    font-size: 1.05rem;
}

.consequence-list,
.mode-panel ul {
    margin: 0;
    padding-left: 20px;
    color: var(--text-soft);
    line-height: 1.65;
}

.diagnosis-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.diagnosis-card {
    padding: 24px;
}

.diagnosis-card p,
.proof-card p,
.mode-panel p,
.mode-panel li,
.flow-step p,
.policy-note {
    color: var(--text-soft);
    line-height: 1.6;
}

.chain-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
    gap: 24px;
    align-items: start;
}

.chain-flow {
    display: grid;
    gap: 18px;
}

.flow-step {
    display: grid;
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 18px;
    padding: 22px 20px;
    border-bottom: 1px solid rgba(126, 171, 204, 0.12);
    background: rgba(12, 20, 31, 0.32);
    border-radius: 20px;
}

.step-index {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: 16px;
    background: rgba(116, 215, 255, 0.12);
    color: var(--cyan);
    font-size: 0.86rem;
    letter-spacing: 0.18em;
}

.policy-panel {
    padding: 26px;
    position: sticky;
    top: 90px;
    background:
        radial-gradient(circle at top right, rgba(243, 186, 78, 0.12), transparent 34%),
        linear-gradient(180deg, rgba(13, 23, 35, 0.98), rgba(9, 16, 24, 0.98));
}

.policy-shell {
    border-radius: 18px;
    border: 1px solid var(--line-strong);
    background: rgba(8, 14, 22, 0.92);
    overflow: hidden;
}

.policy-row {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    padding: 15px 18px;
    border-bottom: 1px solid rgba(126, 171, 204, 0.12);
}

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

.policy-key {
    color: var(--text-dim);
    font-size: 0.92rem;
}

.policy-value {
    text-align: right;
    color: var(--text);
    font-weight: 600;
}

.risk-high {
    color: var(--amber);
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.proof-card,
.mode-panel {
    padding: 26px;
}

.mode-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.hook-shell {
    padding: 38px;
    border-radius: 30px;
    border: 1px solid var(--line);
    background:
        radial-gradient(circle at 12% 14%, rgba(116, 215, 255, 0.09), transparent 24%),
        radial-gradient(circle at 88% 18%, rgba(243, 186, 78, 0.08), transparent 22%),
        linear-gradient(180deg, rgba(14, 24, 36, 0.92), rgba(9, 16, 24, 0.98));
    box-shadow: var(--shadow);
}

.hook-frame {
    border-radius: 24px;
    border: 1px solid rgba(126, 171, 204, 0.14);
    background: rgba(8, 14, 22, 0.92);
    overflow: hidden;
}

.hook-frame-top {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(126, 171, 204, 0.12);
    background: rgba(255, 255, 255, 0.02);
}

.hook-title {
    margin-left: 10px;
    color: var(--text-dim);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
}

.hook-code {
    margin: 0;
    padding: 22px 24px 28px;
    max-height: 760px;
    overflow: auto;
    color: #dbe9f8;
    font-size: 0.9rem;
    line-height: 1.65;
    background:
        linear-gradient(180deg, rgba(10, 18, 27, 0.98), rgba(7, 13, 20, 0.98));
}

.hook-code code {
    display: block;
    white-space: pre;
}

.hook-code::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.hook-code::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.04);
}

.hook-code::-webkit-scrollbar-thumb {
    background: rgba(116, 215, 255, 0.22);
    border-radius: 999px;
    border: 2px solid rgba(8, 14, 22, 0.9);
}

.gallery-strip {
    display: grid;
    gap: 28px;
}

.gallery-item {
    margin: 0;
    padding: 18px 18px 22px;
    border-radius: 28px;
    border: 1px solid var(--line);
    background: rgba(12, 20, 31, 0.68);
    box-shadow: var(--shadow);
}

.gallery-item img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 18px;
    border: 1px solid rgba(126, 171, 204, 0.16);
}

.gallery-item figcaption {
    margin-top: 14px;
    color: var(--text-soft);
    font-size: 1rem;
}

.close {
    min-height: 100vh;
    display: grid;
    align-items: center;
}

.close-shell {
    padding: 48px;
    background:
        radial-gradient(circle at 12% 14%, rgba(116, 215, 255, 0.1), transparent 22%),
        radial-gradient(circle at 88% 18%, rgba(243, 186, 78, 0.12), transparent 20%),
        linear-gradient(180deg, rgba(15, 24, 35, 0.94), rgba(9, 16, 24, 0.98));
}

.closing-line {
    font-family: var(--serif);
    color: #f4debe;
    font-size: 1.42rem;
}

.cta-block {
    margin-top: 28px;
}

.cta-primary {
    font-size: clamp(1.45rem, 3vw, 2.5rem);
    line-height: 1.15;
    max-width: 18ch;
}

.cta-code {
    margin: 20px 0 0;
    padding: 18px 20px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: rgba(8, 14, 22, 0.94);
    color: var(--text-soft);
    overflow-x: auto;
}

.js .reveal {
    opacity: 0;
    transform: translateY(34px);
    transition:
        opacity 680ms ease,
        transform 680ms ease;
}

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

.js .stagger > * {
    opacity: 0;
    transform: translateY(24px);
    animation: hero-rise 700ms ease forwards;
}

.js .stagger > *:nth-child(1) { animation-delay: 80ms; }
.js .stagger > *:nth-child(2) { animation-delay: 180ms; }
.js .stagger > *:nth-child(3) { animation-delay: 280ms; }
.js .stagger > *:nth-child(4) { animation-delay: 380ms; }
.js .stagger > *:nth-child(5) { animation-delay: 480ms; }

@keyframes hero-rise {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes stage-scan {
    0%, 18% {
        transform: translate3d(0, 0, 0) rotate(10deg);
        opacity: 0;
    }
    32%, 58% {
        transform: translate3d(440%, 0, 0) rotate(10deg);
        opacity: 0.55;
    }
    100% {
        transform: translate3d(620%, 0, 0) rotate(10deg);
        opacity: 0;
    }
}

@keyframes scene-bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@keyframes bubble-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-5px) rotate(-1.5deg); }
}

@keyframes danger-pulse {
    0%, 100% { transform: translateY(0) scale(1); filter: drop-shadow(0 0 0 rgba(243, 110, 110, 0)); }
    45% { transform: translateY(-2px) scale(1.01); filter: drop-shadow(0 0 18px rgba(243, 110, 110, 0.22)); }
    60% { transform: translateY(1px) scale(0.995); }
}

@keyframes pill-flicker {
    0%, 100% { opacity: 1; }
    10% { opacity: 0.95; }
    11% { opacity: 0.62; }
    14% { opacity: 1; }
    58% { opacity: 1; }
    60% { opacity: 0.72; }
    63% { opacity: 1; }
}

@keyframes warning-draw {
    0% {
        stroke-dashoffset: 120;
        opacity: 0.35;
    }
    35%,
    70% {
        stroke-dashoffset: 0;
        opacity: 1;
    }
    100% {
        stroke-dashoffset: -18;
        opacity: 0.5;
    }
}

@keyframes console-glow {
    0%, 100% {
        filter: drop-shadow(0 0 0 rgba(116, 215, 255, 0));
        transform: translateY(0);
    }
    50% {
        filter: drop-shadow(0 0 16px rgba(116, 215, 255, 0.12));
        transform: translateY(-1px);
    }
}

@keyframes cluster-sway {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    30% { transform: translateY(-3px) rotate(-1deg); }
    62% { transform: translateY(2px) rotate(1deg); }
}

@keyframes strike-flash {
    0%, 100% { opacity: 0.7; }
    45% { opacity: 1; }
    55% { opacity: 0.3; }
    70% { opacity: 0.95; }
}

@keyframes token-pulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 0 rgba(116, 215, 255, 0));
    }
    50% {
        transform: scale(1.015);
        filter: drop-shadow(0 0 22px rgba(116, 215, 255, 0.16));
    }
}

@keyframes token-orbit {
    0%, 100% { transform: translateX(0) scale(1); opacity: 0.26; }
    50% { transform: translateX(32px) scale(1.35); opacity: 0.48; }
}

@keyframes actor-rise {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes text-flicker {
    0%, 100% { opacity: 1; }
    48% { opacity: 1; }
    50% { opacity: 0.66; }
    52% { opacity: 1; }
}

@keyframes incident-scan {
    0%, 18% {
        transform: translateX(-120%);
        opacity: 0;
    }
    32%, 62% {
        transform: translateX(120%);
        opacity: 0.72;
    }
    100% {
        transform: translateX(180%);
        opacity: 0;
    }
}

@keyframes context-pulse {
    0%, 100% {
        box-shadow: 0 0 0 rgba(243, 110, 110, 0);
        transform: translateY(0);
    }
    50% {
        box-shadow: 0 0 20px rgba(243, 110, 110, 0.18);
        transform: translateY(-1px);
    }
}

@keyframes command-type {
    0%, 10% {
        max-width: 0;
    }
    42%, 78% {
        max-width: 84ch;
    }
    100% {
        max-width: 84ch;
    }
}

@keyframes caret-blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

@keyframes cluster-ring {
    0%, 28% {
        opacity: 0;
        transform: scale(0.7);
    }
    36% {
        opacity: 0.85;
        transform: scale(1);
    }
    54%, 100% {
        opacity: 0;
        transform: scale(1.42);
    }
}

@keyframes cluster-cross {
    0%, 34% { opacity: 0; }
    42%, 70% { opacity: 1; }
    100% { opacity: 0; }
}

@keyframes warning-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

body.section-chaos .progress-bar {
    background: linear-gradient(90deg, var(--red), var(--amber));
}

body.section-control .progress-bar,
body.section-proof .progress-bar,
body.section-close .progress-bar {
    background: linear-gradient(90deg, var(--cyan), var(--amber));
}

@media (max-width: 1180px) {
    :root {
        --content-width: min(100vw - 56px, 1120px);
    }

    .failure-grid,
    .proof-grid,
    .diagnosis-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .incident-terminal {
        width: calc(100% - 310px);
    }

}

@media (max-width: 980px) {
    :root {
        --content-width: min(100vw - 40px, 1120px);
    }

    .hero,
    .chain-layout,
    .mode-columns {
        grid-template-columns: 1fr;
    }

    .incident-terminal,
    .incident-warning-card {
        width: calc(100% - 56px);
    }

    .incident-cluster-lane {
        position: relative;
        right: auto;
        top: auto;
        width: auto;
        margin: 230px 24px 0;
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .incident-warning-card {
        bottom: 86px;
    }

    .incident-stage-footer {
        bottom: 30px;
    }

    .hero {
        min-height: auto;
        padding-top: 104px;
    }

    .terminal-stack {
        min-height: 440px;
    }

    .policy-panel {
        position: static;
    }
}

@media (max-width: 720px) {
    .chapter {
        padding: 104px 0 84px;
    }

    .chapter-heading h2,
    .close-shell h2 {
        max-width: 100%;
    }

    .failure-grid,
    .proof-grid,
    .diagnosis-grid {
        grid-template-columns: 1fr;
    }

    .incident-film {
        padding: 20px;
    }

    .incident-stage {
        padding: 14px;
    }

    .incident-viewport {
        min-height: 620px;
    }

    .incident-terminal,
    .incident-warning-card {
        left: 18px;
        width: calc(100% - 36px);
    }

    .incident-cluster-lane {
        margin: 258px 18px 0;
        grid-template-columns: 1fr;
    }

    .incident-warning-card {
        bottom: 140px;
    }

    .incident-stage-footer {
        left: 18px;
        right: 18px;
        bottom: 46px;
        flex-direction: column;
        gap: 8px;
    }

    .terminal-card {
        position: relative;
        inset: auto;
        width: 100%;
        transform: none;
    }

    .terminal-card-secondary {
        margin-top: 20px;
        width: 100%;
    }

    .terminal-stack {
        min-height: auto;
    }

    .close-shell {
        padding: 28px;
    }

    .hook-shell {
        padding: 24px;
    }

    .hook-code {
        padding: 18px;
        max-height: 620px;
        font-size: 0.82rem;
    }

    .flow-step {
        grid-template-columns: 56px 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .js .reveal,
    .js .stagger > * {
        opacity: 1;
        transform: none;
        transition: none;
        animation: none;
    }

    .failure-stage::after,
    .failure-scene-svg .scene-operator,
    .failure-scene-svg .scene-db,
    .failure-scene-svg .scene-bubble,
    .failure-scene-svg .scene-cluster,
    .failure-scene-svg .scene-actor,
    .failure-scene-svg .scene-connection-pill,
    .failure-scene-svg .scene-token-card,
    .failure-scene-svg .scene-token-glow,
    .failure-scene-svg .scene-workflow,
    .failure-scene-svg .scene-terminal,
    .failure-scene-svg .scene-warning-line,
    .failure-scene-svg .scene-command-text,
    .failure-scene-svg .scene-strike,
    .failure-scene-svg .scene-strike-heavy,
    .incident-stage::after,
    .incident-context-chip,
    .incident-command-text,
    .incident-command-text::after,
    .incident-cluster-ring::before,
    .incident-cluster-cross::before,
    .incident-cluster-cross::after,
    .incident-warning-card {
        animation: none !important;
    }

}