/* ============================================================
   mysterious.quest — candy-colored conspiracy board
   palette : #0D0221 #150535 #FF6B9D #C44DFF #51E5FF #FFE66D
             #AAFF00 #E8E0F0 #9B8FB4 #F0E6FF
   fonts   : Jost / Josefin Sans / Nunito / IBM Plex Mono
   ============================================================ */

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

:root {
    --bg: #0D0221;
    --bg-2: #150535;
    --bg-deep: #050510;
    --pink: #FF6B9D;
    --violet: #C44DFF;
    --cyan: #51E5FF;
    --yellow: #FFE66D;
    --lime: #AAFF00;
    --text: #E8E0F0;
    --muted: #9B8FB4;
    --orchid: #F0E6FF;
    --dark-purple: #2D1B4E;

    --sidebar-w: 80px;
    --sidebar-w-open: 260px;

    --ease-magnetic: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-approach: cubic-bezier(0.25, 0.46, 0.45, 0.94);

    --font-display: 'Jost', system-ui, sans-serif;
    --font-sub: 'Josefin Sans', system-ui, sans-serif;
    --font-body: 'Nunito', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;
}

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.65;
    overflow-x: hidden;
    scroll-behavior: smooth;
    cursor: none;
}

body {
    background-image:
        radial-gradient(ellipse at 15% 0%, rgba(196, 77, 255, 0.10) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 100%, rgba(81, 229, 255, 0.07) 0%, transparent 55%);
}

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

::selection { background: var(--pink); color: var(--bg); }

/* ------------------------------------------------------------
   PCB ground-plane background pattern (inline SVG data URI)
   ------------------------------------------------------------ */
.pcb-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'><g fill='none' stroke='%2351E5FF' stroke-width='1' opacity='0.5'><path d='M0 40 L60 40 L80 60 L160 60'/><path d='M0 100 L40 100 L60 120 L160 120'/><path d='M40 0 L40 40'/><path d='M120 0 L120 60'/><path d='M80 60 L80 160'/><path d='M60 120 L60 160'/></g><g fill='%2351E5FF' opacity='0.55'><circle cx='40' cy='40' r='2.4'/><circle cx='80' cy='60' r='2.4'/><circle cx='120' cy='60' r='2.4'/><circle cx='60' cy='120' r='2.4'/></g></svg>");
    background-size: 160px 160px;
    opacity: 0.06;
    mix-blend-mode: screen;
}

.pcb-bg-2 { opacity: 0.05; background-position: 40px 80px; }
.pcb-bg-3 { opacity: 0.04; }
.pcb-bg-4 { opacity: 0.10; }
.pcb-bg-5 { opacity: 0.05; background-position: 80px 0; }

/* ============================================================
   SIDEBAR — circuit-board edge connector
   ============================================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    width: var(--sidebar-w);
    background: rgba(13, 2, 33, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-right: 1px solid rgba(196, 77, 255, 0.18);
    z-index: 50;
    overflow: hidden;
    transition: width 0.42s var(--ease-magnetic);
}

.sidebar::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'><g fill='none' stroke='%23C44DFF' stroke-width='1' opacity='0.6'><path d='M20 0 L20 30 L40 30 L40 80'/><path d='M60 0 L60 50 L20 50 L20 80'/></g><g fill='%23C44DFF' opacity='0.5'><circle cx='20' cy='30' r='1.6'/><circle cx='40' cy='30' r='1.6'/><circle cx='60' cy='50' r='1.6'/><circle cx='20' cy='50' r='1.6'/></g></svg>");
    background-size: 80px 80px;
    opacity: 0.08;
}

.sidebar:hover,
.sidebar.is-open {
    width: var(--sidebar-w-open);
}

.sidebar-inner {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 24px 0;
}

.sidebar-top {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 0 22px 24px;
    border-bottom: 1px dashed rgba(196, 77, 255, 0.25);
    margin: 0 18px 28px;
    height: 48px;
}

.logo-mark {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-svg { width: 100%; height: 100%; overflow: visible; }
.logo-core { fill: var(--pink); filter: drop-shadow(0 0 6px var(--pink)); }
.logo-ring { fill: none; stroke: var(--cyan); stroke-width: 1.4; opacity: 0.7; }
.logo-trace { stroke: var(--violet); stroke-width: 1.4; fill: none; }

.logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 14px;
    letter-spacing: -0.01em;
    color: var(--text);
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.3s var(--ease-magnetic) 60ms,
                transform 0.4s var(--ease-magnetic) 60ms;
}
.logo-dot { color: var(--pink); }

.sidebar:hover .logo-text,
.sidebar.is-open .logo-text {
    opacity: 1;
    transform: translateX(0);
}

/* Vertical trace line spine */
.trace-vertical {
    position: absolute;
    left: 38px;
    top: 18px;
    bottom: 18px;
    width: 2px;
    background: linear-gradient(
        to bottom,
        rgba(255, 107, 157, 0) 0%,
        rgba(255, 107, 157, 0.4) 8%,
        rgba(196, 77, 255, 0.6) 30%,
        rgba(81, 229, 255, 0.6) 60%,
        rgba(255, 230, 109, 0.4) 88%,
        rgba(255, 230, 109, 0) 100%
    );
    background-size: 100% 300%;
    animation: traceFlow 8s linear infinite;
    opacity: 0.55;
}

@keyframes traceFlow {
    0%   { background-position: 0% 0%; }
    100% { background-position: 0% 300%; }
}

.sidenav {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px 0;
    flex: 1;
}

.nav-node {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 22px 12px 22px;
    color: var(--muted);
    font-family: var(--font-sub);
    font-weight: 400;
    font-size: 16px;
    letter-spacing: 0.01em;
    transition: color 0.3s var(--ease-magnetic),
                background 0.3s var(--ease-magnetic);
    cursor: none;
}

.node-dot {
    position: relative;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, var(--violet), #6a1d99 70%);
    box-shadow:
        0 0 0 2px rgba(196, 77, 255, 0.18),
        0 0 8px rgba(196, 77, 255, 0.5);
    flex-shrink: 0;
    transition: background 0.4s var(--ease-magnetic),
                box-shadow 0.4s var(--ease-magnetic),
                transform 0.4s var(--ease-magnetic);
    z-index: 2;
}

.node-label {
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-14px);
    transition: opacity 0.3s var(--ease-magnetic),
                transform 0.45s var(--ease-magnetic);
    transition-delay: var(--label-delay, 0ms);
}

.node-id {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--cyan);
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s var(--ease-magnetic),
                transform 0.45s var(--ease-magnetic);
    transition-delay: var(--label-delay, 0ms);
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.5);
}

.sidebar:hover .node-label,
.sidebar.is-open .node-label,
.sidebar:hover .node-id,
.sidebar.is-open .node-id {
    opacity: 1;
    transform: translateX(0);
}

.nav-node:nth-child(2) { --label-delay: 40ms; }
.nav-node:nth-child(3) { --label-delay: 80ms; }
.nav-node:nth-child(4) { --label-delay: 120ms; }
.nav-node:nth-child(5) { --label-delay: 160ms; }
.nav-node:nth-child(6) { --label-delay: 200ms; }

.nav-node:hover {
    color: var(--text);
    background: linear-gradient(
        to right,
        rgba(255, 107, 157, 0.10) 0%,
        rgba(255, 107, 157, 0) 80%
    );
}

.nav-node:hover .node-dot {
    background: radial-gradient(circle at 35% 30%, var(--pink), #b22b62 70%);
    box-shadow:
        0 0 0 2px rgba(255, 107, 157, 0.3),
        0 0 14px rgba(255, 107, 157, 0.8),
        0 0 28px rgba(255, 107, 157, 0.4);
    transform: scale(1.08);
}

.nav-node.is-active { color: var(--text); }
.nav-node.is-active .node-dot {
    background: radial-gradient(circle at 35% 30%, var(--yellow), var(--pink) 70%);
    box-shadow:
        0 0 0 2px rgba(255, 230, 109, 0.35),
        0 0 16px rgba(255, 230, 109, 0.85),
        0 0 32px rgba(255, 107, 157, 0.5);
    animation: pulseHalo 1.8s ease-in-out infinite;
}

@keyframes pulseHalo {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.18); }
}

.sidebar-bottom {
    padding: 18px 22px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-top: 1px dashed rgba(81, 229, 255, 0.22);
    margin: 0 18px;
}

.signal-wave {
    width: 60px;
    height: 16px;
    color: var(--cyan);
    opacity: 0.55;
    flex-shrink: 0;
    filter: drop-shadow(0 0 4px rgba(81, 229, 255, 0.5));
}

.status-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--lime);
    text-shadow: 0 0 6px rgba(170, 255, 0, 0.5);
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-8px);
    transition: opacity 0.3s var(--ease-magnetic),
                transform 0.4s var(--ease-magnetic);
}
.sidebar:hover .status-tag,
.sidebar.is-open .status-tag { opacity: 1; transform: translateX(0); }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.content {
    margin-left: var(--sidebar-w);
    width: calc(100% - var(--sidebar-w));
    position: relative;
}

.scene {
    position: relative;
    min-height: 100vh;
    padding: 80px 64px;
    overflow: hidden;
    isolation: isolate;
}

.scene-bg { z-index: 0; }
.scene > *:not(.scene-bg):not(.letterbox) { position: relative; z-index: 2; }

/* corner brackets */
.corner-bracket {
    position: absolute;
    width: 36px;
    height: 36px;
    border: 0 solid var(--yellow);
    z-index: 3;
    opacity: 0.7;
    filter: drop-shadow(0 0 4px rgba(255, 230, 109, 0.5));
    animation: bracketPulse 3.6s ease-in-out infinite;
}
.br-tl { top: 28px; left: 28px; border-top-width: 2px; border-left-width: 2px; }
.br-tr { top: 28px; right: 28px; border-top-width: 2px; border-right-width: 2px; }
.br-bl { bottom: 28px; left: 28px; border-bottom-width: 2px; border-left-width: 2px; }
.br-br { bottom: 28px; right: 28px; border-bottom-width: 2px; border-right-width: 2px; }

@keyframes bracketPulse {
    0%, 100% { opacity: 0.45; }
    50%      { opacity: 0.95; }
}

/* ============================================================
   SCENE HEADERS
   ============================================================ */
.scene-header {
    position: absolute;
    top: 64px;
    left: 64px;
    display: flex;
    align-items: baseline;
    gap: 16px;
    z-index: 3;
}
.scene-header-right { left: auto; right: 80px; top: 64px; }
.scene-header-corner { top: 80px; left: 80px; }

.scene-num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--cyan);
    text-shadow: 0 0 8px rgba(81, 229, 255, 0.4);
    letter-spacing: 0.18em;
}
.scene-title {
    font-family: var(--font-sub);
    font-weight: 400;
    font-size: 22px;
    color: var(--violet);
    letter-spacing: 0.02em;
}
.scene-sub {
    font-family: var(--font-body);
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
}

/* ============================================================
   SCENE 1 — THE SIGNAL
   ============================================================ */
.scene-1 {
    background: var(--bg);
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.scene1-circuit {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.scene1-circuit .trace {
    fill: none;
    stroke: var(--cyan);
    stroke-width: 1.6;
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    filter: drop-shadow(0 0 4px rgba(81, 229, 255, 0.6));
    transition: stroke-dashoffset 2.4s var(--ease-magnetic);
}
.scene-1.is-visible .scene1-circuit .trace { stroke-dashoffset: 0; }
.scene1-circuit .trace-main      { stroke: var(--pink); transition-delay: 0.1s; filter: drop-shadow(0 0 6px rgba(255, 107, 157, 0.7)); }
.scene1-circuit .trace-secondary { stroke: var(--cyan); transition-delay: 0.45s; }
.scene1-circuit .trace-tertiary  { stroke: var(--violet); transition-delay: 0.75s; filter: drop-shadow(0 0 4px rgba(196, 77, 255, 0.5)); }
.scene1-circuit .trace-extra     { stroke: var(--cyan); transition-delay: 1s; opacity: 0.5; }

.scene1-circuit .via {
    fill: var(--cyan);
    filter: drop-shadow(0 0 6px rgba(81, 229, 255, 0.9));
    opacity: 0;
    transition: opacity 0.6s var(--ease-magnetic);
    transition-delay: 1.4s;
}
.scene1-circuit .via-large { fill: var(--pink); filter: drop-shadow(0 0 10px rgba(255, 107, 157, 1)); }
.scene-1.is-visible .scene1-circuit .via { opacity: 1; }

.scene1-circuit .via-glow {
    opacity: 0;
    transition: opacity 0.8s ease;
    transition-delay: 1.6s;
}
.scene-1.is-visible .scene1-circuit .via-glow { opacity: 1; animation: viaGlowPulse 3.2s ease-in-out infinite; }

@keyframes viaGlowPulse {
    0%, 100% { opacity: 0.55; transform-origin: center; }
    50%      { opacity: 1; }
}

.scene1-circuit .ic-chip rect {
    fill: rgba(13, 2, 33, 0.4);
    stroke: var(--violet);
    stroke-width: 1.2;
    stroke-dasharray: 600;
    stroke-dashoffset: 600;
    transition: stroke-dashoffset 2s var(--ease-magnetic) 1.2s;
    filter: drop-shadow(0 0 4px rgba(196, 77, 255, 0.5));
}
.scene-1.is-visible .scene1-circuit .ic-chip rect { stroke-dashoffset: 0; }

.scene1-circuit .ic-chip line {
    stroke: var(--violet);
    stroke-width: 1.2;
    opacity: 0;
    transition: opacity 0.6s var(--ease-magnetic) 2s;
}
.scene-1.is-visible .scene1-circuit .ic-chip line { opacity: 0.5; }

.scene1-circuit .ic-dot { fill: var(--yellow); filter: drop-shadow(0 0 4px var(--yellow)); }

.scene1-circuit .ic-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 14px;
    fill: var(--cyan);
    text-anchor: middle;
    letter-spacing: 0.1em;
    opacity: 0;
    transition: opacity 0.8s ease 2.2s;
}
.scene-1.is-visible .scene1-circuit .ic-label { opacity: 0.85; }

.scene1-content {
    position: absolute;
    right: 80px;
    bottom: 18%;
    max-width: 680px;
    z-index: 4;
    text-align: right;
}

.clue-id {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--cyan);
    text-shadow: 0 0 8px rgba(81, 229, 255, 0.5);
    letter-spacing: 0.2em;
    margin-bottom: 24px;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.6s var(--ease-magnetic),
                transform 0.6s var(--ease-magnetic);
}
.scene-1.is-visible .clue-id { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }

.display-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(56px, 9vw, 112px);
    line-height: 0.92;
    letter-spacing: -0.03em;
    text-transform: uppercase;
    margin-bottom: 30px;
}

.title-letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(40px) scale(0.7);
    transition: opacity 0.5s var(--ease-magnetic),
                transform 0.7s var(--ease-magnetic);
}

.title-letter:nth-child(1)  { color: var(--pink);   transition-delay: 0.30s; }
.title-letter:nth-child(2)  { color: var(--violet); transition-delay: 0.38s; }
.title-letter:nth-child(3)  { color: var(--cyan);   transition-delay: 0.46s; }
.title-letter:nth-child(5)  { color: var(--yellow); transition-delay: 0.58s; }
.title-letter:nth-child(6)  { color: var(--pink);   transition-delay: 0.66s; }
.title-letter:nth-child(7)  { color: var(--violet); transition-delay: 0.74s; }
.title-letter:nth-child(8)  { color: var(--cyan);   transition-delay: 0.82s; }
.title-letter:nth-child(9)  { color: var(--yellow); transition-delay: 0.90s; }
.title-letter:nth-child(10) { color: var(--pink);   transition-delay: 0.98s; }

.scene-1.is-visible .title-letter {
    opacity: 1;
    transform: translateY(0) scale(1);
    text-shadow:
        0 0 4px currentColor,
        0 0 12px currentColor,
        0 0 32px rgba(255, 107, 157, 0.4);
}

.title-space { display: inline-block; width: 0.35em; }

.lede {
    font-family: var(--font-sub);
    font-weight: 300;
    font-size: 19px;
    color: var(--text);
    line-height: 1.55;
    letter-spacing: 0.005em;
    margin-left: auto;
    max-width: 540px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.7s var(--ease-magnetic),
                transform 0.7s var(--ease-magnetic);
    transition-delay: 1.4s;
}
.scene-1.is-visible .lede { opacity: 1; transform: translateY(0); }

.scroll-hint {
    margin-top: 34px;
    display: inline-flex;
    align-items: center;
    gap: 14px;
    opacity: 0;
    transition: opacity 0.6s ease 2.2s;
}
.scene-1.is-visible .scroll-hint { opacity: 1; }
.scroll-hint-line {
    width: 56px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--cyan));
    box-shadow: 0 0 6px rgba(81, 229, 255, 0.4);
}
.scroll-hint-text {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--cyan);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.4);
}

/* ============================================================
   SCENE 2 — EVIDENCE WALL
   ============================================================ */
.scene-2 {
    background: linear-gradient(140deg, var(--bg) 0%, var(--bg-2) 100%);
}

.evidence-traces {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.ev-trace {
    fill: none;
    stroke: var(--pink);
    stroke-width: 1.4;
    stroke-dasharray: 800;
    stroke-dashoffset: 800;
    filter: drop-shadow(0 0 6px rgba(255, 107, 157, 0.5));
    transition: stroke-dashoffset 1.8s var(--ease-magnetic);
}
.ev-trace:nth-child(1) { transition-delay: 0.2s; stroke: var(--cyan); filter: drop-shadow(0 0 6px rgba(81, 229, 255, 0.5)); }
.ev-trace:nth-child(2) { transition-delay: 0.4s; }
.ev-trace:nth-child(3) { transition-delay: 0.6s; stroke: var(--violet); filter: drop-shadow(0 0 6px rgba(196, 77, 255, 0.5)); }
.ev-trace:nth-child(4) { transition-delay: 0.8s; }
.ev-trace:nth-child(5) { transition-delay: 1.0s; stroke: var(--cyan); }
.ev-trace-faint { opacity: 0.4; stroke-dasharray: 6 6; }
.scene-2.is-visible .ev-trace { stroke-dashoffset: 0; }

.ev-via {
    fill: var(--yellow);
    filter: drop-shadow(0 0 8px rgba(255, 230, 109, 0.9));
    opacity: 0;
    transition: opacity 0.6s ease 1.4s;
}
.scene-2.is-visible .ev-via { opacity: 1; }

.evidence-grid {
    position: relative;
    width: 100%;
    height: calc(100vh - 160px);
    margin-top: 80px;
}

.card {
    position: absolute;
    left: var(--x);
    top: var(--y);
    width: 320px;
    padding: 26px 26px 22px;
    background: rgba(21, 5, 53, 0.78);
    border: 1px solid rgba(196, 77, 255, 0.35);
    border-radius: 4px;
    transform: rotate(var(--rot)) translate(60px, 30px);
    opacity: 0;
    box-shadow:
        0 0 0 1px rgba(255, 107, 157, 0.06),
        0 18px 50px rgba(0, 0, 0, 0.5),
        inset 0 0 60px rgba(196, 77, 255, 0.04);
    transition: transform 1.1s var(--ease-magnetic),
                opacity 0.8s var(--ease-magnetic),
                box-shadow 0.4s var(--ease-magnetic),
                border-color 0.4s var(--ease-magnetic);
    z-index: 4;
}

.card-a { transition-delay: 0.15s; }
.card-b { transition-delay: 0.30s; }
.card-c { transition-delay: 0.45s; }
.card-d { transition-delay: 0.60s; }
.card-e { transition-delay: 0.75s; }

.scene-2.is-visible .card {
    opacity: 1;
    transform: rotate(var(--rot)) translate(0, 0);
}

.card:hover {
    border-color: var(--pink);
    box-shadow:
        0 0 0 1px rgba(255, 107, 157, 0.4),
        0 22px 60px rgba(255, 107, 157, 0.18),
        inset 0 0 60px rgba(196, 77, 255, 0.08);
}

/* IC-chip pin decoration on cards */
.card-pins {
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    overflow: hidden;
}
.card-pins::before,
.card-pins::after {
    content: "";
    position: absolute;
    background-image: linear-gradient(
        to bottom,
        var(--violet) 0,
        var(--violet) 12px,
        transparent 12px,
        transparent 28px
    );
    background-size: 4px 28px;
    background-repeat: repeat-y;
    opacity: 0.3;
    width: 4px;
}
.card-pins::before { left: -4px; top: 24px; bottom: 24px; }
.card-pins::after  { right: -4px; top: 24px; bottom: 24px; }

/* notch on card top-right */
.card::before {
    content: "";
    position: absolute;
    top: -1px;
    right: 24px;
    width: 18px;
    height: 6px;
    background: var(--bg);
    border: 1px solid rgba(196, 77, 255, 0.35);
    border-top: 0;
    border-radius: 0 0 4px 4px;
}

.card-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--cyan);
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.4);
    letter-spacing: 0.18em;
    margin-bottom: 14px;
}

.card-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 26px;
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 14px;
}

.card-body {
    font-family: var(--font-body);
    font-size: 14.5px;
    line-height: 1.55;
    color: var(--muted);
    margin-bottom: 18px;
}

.card-meta {
    display: block;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--violet);
    letter-spacing: 0.12em;
    padding-top: 12px;
    border-top: 1px dashed rgba(196, 77, 255, 0.3);
}

.card-c .card-title { color: var(--pink); }
.card-d .card-title { color: var(--cyan); }
.card-b .card-title { color: var(--yellow); }

/* ============================================================
   SCENE 3 — CLOSE-UP
   ============================================================ */
.scene-3 {
    background: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.closeup-blur {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
    filter: blur(60px);
}

.blur-orb {
    position: absolute;
    width: 540px;
    height: 540px;
    border-radius: 50%;
    opacity: 0.45;
}
.blur-pink   { background: var(--pink);   left: -120px; top: 10%; }
.blur-violet { background: var(--violet); right: -180px; top: 30%; opacity: 0.35; }
.blur-cyan   { background: var(--cyan);   left: 30%;   bottom: -200px; opacity: 0.25; }

.closeup-stage {
    position: relative;
    text-align: center;
    z-index: 5;
}

.closeup-word {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(80px, 14vw, 180px);
    line-height: 0.95;
    letter-spacing: -0.04em;
    color: var(--text);
    transform: scale(0.92);
    opacity: 0;
    transition: opacity 1.1s var(--ease-magnetic),
                transform 1.1s var(--ease-magnetic);
    text-shadow:
        0 0 4px currentColor,
        0 0 14px currentColor,
        0 0 40px rgba(255, 107, 157, 0.5);
}
.scene-3.is-visible .closeup-word { opacity: 1; transform: scale(1); }

.cw-pink { color: var(--pink); text-shadow: 0 0 4px var(--pink), 0 0 16px var(--pink), 0 0 40px rgba(255, 107, 157, 0.6); }
.cw-cyan { color: var(--cyan); text-shadow: 0 0 4px var(--cyan), 0 0 16px var(--cyan), 0 0 40px rgba(81, 229, 255, 0.6); }
.cw-slash {
    color: var(--yellow);
    margin: 0 0.05em;
    text-shadow: 0 0 4px var(--yellow), 0 0 16px var(--yellow);
    display: inline-block;
    transform: translateY(-0.12em);
    font-size: 0.7em;
}

.closeup-tag {
    display: block;
    margin-top: 28px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--cyan);
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.4);
    letter-spacing: 0.28em;
    opacity: 0;
    transition: opacity 0.8s ease 0.8s;
}
.scene-3.is-visible .closeup-tag { opacity: 0.85; }

.closeup-cluster {
    position: absolute;
    left: 100px;
    bottom: 96px;
    max-width: 360px;
    z-index: 6;
    border-left: 2px solid var(--pink);
    padding-left: 22px;
    opacity: 0;
    transform: translateX(-12px);
    transition: opacity 0.8s var(--ease-magnetic) 1.1s,
                transform 0.8s var(--ease-magnetic) 1.1s;
}
.scene-3.is-visible .closeup-cluster { opacity: 1; transform: translateX(0); }

.cluster-mark {
    width: 32px;
    height: 32px;
    color: var(--yellow);
    margin-bottom: 14px;
    filter: drop-shadow(0 0 4px rgba(255, 230, 109, 0.5));
    animation: bracketPulse 2.4s ease-in-out infinite;
}

.cluster-line {
    font-family: var(--font-body);
    font-size: 13.5px;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 10px;
}
.cluster-key {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--violet);
    letter-spacing: 0.14em;
    margin-right: 8px;
    text-transform: uppercase;
}

/* ============================================================
   SCENE 4 — THE CONNECTION (widescreen letterbox)
   ============================================================ */
.scene-4 {
    background: var(--bg-2);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.letterbox {
    position: absolute;
    left: 0;
    right: 0;
    height: 18vh;
    background: var(--bg-deep);
    z-index: 5;
    pointer-events: none;
}
.letterbox-top { top: 0; box-shadow: 0 1px 0 rgba(81, 229, 255, 0.08); }
.letterbox-bottom { bottom: 0; box-shadow: 0 -1px 0 rgba(81, 229, 255, 0.08); }

.scene-4 .scene-header {
    top: 9vh;
    left: 80px;
    z-index: 6;
}

.connection-band {
    position: relative;
    width: min(1200px, calc(100% - 160px));
    display: grid;
    grid-template-columns: auto 1fr 6px 1fr 6px 1fr auto;
    align-items: center;
    gap: 32px;
    padding: 40px 0;
    z-index: 4;
}

.cb-rail {
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--cyan));
    box-shadow: 0 0 6px rgba(81, 229, 255, 0.5);
    align-self: center;
}
.cb-rail-right { background: linear-gradient(to left, transparent, var(--cyan)); }

.cb-col {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cb-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--yellow);
    text-shadow: 0 0 6px rgba(255, 230, 109, 0.4);
    letter-spacing: 0.22em;
    margin-bottom: 6px;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.6s var(--ease-magnetic), transform 0.6s var(--ease-magnetic);
}

.cb-line {
    font-family: var(--font-mono);
    font-size: 13.5px;
    color: var(--cyan);
    line-height: 1.5;
    letter-spacing: 0.02em;
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.3);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.6s var(--ease-magnetic), transform 0.6s var(--ease-magnetic);
}

.cb-divider {
    color: var(--violet);
    width: 6px;
    height: 80px;
    opacity: 0.5;
    align-self: center;
    filter: drop-shadow(0 0 3px rgba(196, 77, 255, 0.6));
}

.scene-4.is-visible .cb-label,
.scene-4.is-visible .cb-line {
    opacity: 1;
    transform: translateY(0);
}
.scene-4.is-visible .cb-col:nth-child(2) .cb-label { transition-delay: 0.10s; }
.scene-4.is-visible .cb-col:nth-child(2) .cb-line:nth-of-type(1) { transition-delay: 0.18s; }
.scene-4.is-visible .cb-col:nth-child(2) .cb-line:nth-of-type(2) { transition-delay: 0.26s; }
.scene-4.is-visible .cb-col:nth-child(2) .cb-line:nth-of-type(3) { transition-delay: 0.34s; }
.scene-4.is-visible .cb-col:nth-child(4) .cb-label { transition-delay: 0.42s; }
.scene-4.is-visible .cb-col:nth-child(4) .cb-line:nth-of-type(1) { transition-delay: 0.50s; }
.scene-4.is-visible .cb-col:nth-child(4) .cb-line:nth-of-type(2) { transition-delay: 0.58s; }
.scene-4.is-visible .cb-col:nth-child(4) .cb-line:nth-of-type(3) { transition-delay: 0.66s; }
.scene-4.is-visible .cb-col:nth-child(6) .cb-label { transition-delay: 0.74s; }
.scene-4.is-visible .cb-col:nth-child(6) .cb-line:nth-of-type(1) { transition-delay: 0.82s; }
.scene-4.is-visible .cb-col:nth-child(6) .cb-line:nth-of-type(2) { transition-delay: 0.90s; }
.scene-4.is-visible .cb-col:nth-child(6) .cb-line:nth-of-type(3) { transition-delay: 0.98s; }

/* ============================================================
   SCENE 5 — THE REVEAL
   ============================================================ */
.scene-5 {
    background: var(--bg);
    min-height: 110vh;
    padding-bottom: 0;
}

.reveal-converge {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.reveal-converge .ghost {
    fill: none;
    stroke: var(--violet);
    stroke-width: 1;
    stroke-dasharray: 1600;
    stroke-dashoffset: 1600;
    opacity: 0.45;
    filter: drop-shadow(0 0 4px rgba(196, 77, 255, 0.4));
    transition: stroke-dashoffset 2.4s var(--ease-magnetic);
}
.scene-5.is-visible .reveal-converge .ghost { stroke-dashoffset: 0; }
.scene-5.is-visible .reveal-converge .ghost:nth-child(2) { transition-delay: 0.1s; stroke: var(--pink); }
.scene-5.is-visible .reveal-converge .ghost:nth-child(3) { transition-delay: 0.2s; stroke: var(--cyan); }
.scene-5.is-visible .reveal-converge .ghost:nth-child(4) { transition-delay: 0.3s; }
.scene-5.is-visible .reveal-converge .ghost:nth-child(5) { transition-delay: 0.4s; stroke: var(--cyan); }
.scene-5.is-visible .reveal-converge .ghost:nth-child(6) { transition-delay: 0.5s; stroke: var(--pink); }
.scene-5.is-visible .reveal-converge .ghost:nth-child(7) { transition-delay: 0.6s; }

.reveal-halo {
    opacity: 0;
    transform-origin: 600px 400px;
    transform: scale(0.6);
    transition: opacity 1.4s ease 1.6s, transform 1.4s var(--ease-magnetic) 1.6s;
}
.scene-5.is-visible .reveal-halo {
    opacity: 1;
    transform: scale(1);
    animation: haloBreathe 4.8s ease-in-out infinite 3s;
}
@keyframes haloBreathe {
    0%, 100% { opacity: 0.85; transform: scale(1); }
    50%      { opacity: 1; transform: scale(1.08); }
}

.reveal-core {
    fill: var(--yellow);
    filter: drop-shadow(0 0 12px var(--yellow)) drop-shadow(0 0 30px rgba(255, 230, 109, 0.6));
    opacity: 0;
    transition: opacity 0.8s ease 2.2s;
}
.scene-5.is-visible .reveal-core { opacity: 1; }

.reveal-ring {
    fill: none;
    stroke: var(--yellow);
    stroke-width: 1.4;
    opacity: 0;
    transition: opacity 0.8s ease 2.4s;
    filter: drop-shadow(0 0 6px rgba(255, 230, 109, 0.6));
}
.reveal-ring-2 { stroke: var(--pink); transition-delay: 2.6s; }
.scene-5.is-visible .reveal-ring { opacity: 0.7; }

.reveal-content {
    position: relative;
    margin-top: 100px;
    margin-left: 80px;
    max-width: 640px;
    z-index: 4;
}

.reveal-tag {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--lime);
    letter-spacing: 0.24em;
    text-shadow: 0 0 8px rgba(170, 255, 0, 0.5);
    margin-bottom: 22px;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.8s var(--ease-magnetic) 0.4s,
                transform 0.8s var(--ease-magnetic) 0.4s;
}
.scene-5.is-visible .reveal-tag { opacity: 1; transform: translateY(0); }

.reveal-statement {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(48px, 7vw, 92px);
    line-height: 0.95;
    letter-spacing: -0.025em;
    text-transform: uppercase;
    margin-bottom: 32px;
}
.rs-line {
    display: block;
    color: var(--text);
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.9s var(--ease-magnetic),
                transform 0.9s var(--ease-magnetic);
    text-shadow: 0 0 4px currentColor, 0 0 14px currentColor;
}
.rs-yellow {
    color: var(--yellow);
    text-shadow: 0 0 6px var(--yellow), 0 0 22px var(--yellow), 0 0 50px rgba(255, 230, 109, 0.4);
}
.scene-5.is-visible .rs-line:nth-of-type(1) { opacity: 1; transform: translateX(0); transition-delay: 0.6s; }
.scene-5.is-visible .rs-line:nth-of-type(2) { opacity: 1; transform: translateX(0); transition-delay: 1.0s; }
.scene-5.is-visible .rs-line:nth-of-type(3) { opacity: 1; transform: translateX(0); transition-delay: 1.4s; }

.reveal-body {
    font-family: var(--font-sub);
    font-weight: 300;
    font-size: 18px;
    line-height: 1.55;
    color: var(--text);
    max-width: 560px;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 1s var(--ease-magnetic) 1.8s,
                transform 1s var(--ease-magnetic) 1.8s;
}
.scene-5.is-visible .reveal-body { opacity: 1; transform: translateY(0); }

.reveal-motif {
    position: absolute;
    right: 90px;
    bottom: 18%;
    width: 320px;
    height: 320px;
    z-index: 4;
    color: var(--cyan);
    opacity: 0;
    transform: translate(20px, 20px) scale(0.85);
    transition: opacity 1.2s var(--ease-magnetic) 2s,
                transform 1.2s var(--ease-magnetic) 2s;
    filter: drop-shadow(0 0 16px rgba(81, 229, 255, 0.4));
}
.scene-5.is-visible .reveal-motif { opacity: 1; transform: translate(0, 0) scale(1); }

.rm-orbit {
    stroke: var(--cyan);
    stroke-width: 1.2;
    stroke-dasharray: 4 6;
    opacity: 0.45;
    transform-origin: 160px 160px;
    animation: orbitSpin 18s linear infinite;
}
.rm-orbit-2 {
    stroke: var(--violet);
    stroke-dasharray: 6 4;
    animation: orbitSpin 11s linear infinite reverse;
    opacity: 0.55;
}
.rm-orbit-3 {
    stroke: var(--pink);
    stroke-dasharray: 2 6;
    animation: orbitSpin 7s linear infinite;
    opacity: 0.7;
}
@keyframes orbitSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}
.rm-core {
    fill: var(--yellow);
    filter: drop-shadow(0 0 8px var(--yellow));
    animation: pulseHalo 2.4s ease-in-out infinite;
    transform-origin: 160px 160px;
}
.rm-spoke {
    stroke: var(--cyan);
    stroke-width: 1.4;
    opacity: 0.6;
    filter: drop-shadow(0 0 4px rgba(81, 229, 255, 0.5));
}

.footer-strip {
    position: relative;
    margin-top: 120px;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 28px 80px;
    border-top: 1px dashed rgba(196, 77, 255, 0.3);
    z-index: 5;
}

.fs-mark {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 14px;
    color: var(--text);
    letter-spacing: -0.01em;
}
.fs-trace {
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--violet), transparent);
    opacity: 0.6;
}
.fs-line {
    font-family: var(--font-sub);
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
    white-space: nowrap;
}
.fs-tick {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--cyan);
    letter-spacing: 0.18em;
    text-shadow: 0 0 6px rgba(81, 229, 255, 0.4);
    white-space: nowrap;
}

/* ============================================================
   CURSOR HALO (magnetic cursor effect)
   ============================================================ */
.cursor-halo {
    position: fixed;
    top: 0;
    left: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 999;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle at 35% 30%, var(--pink), rgba(196, 77, 255, 0.4) 60%, transparent 80%);
    box-shadow:
        0 0 12px rgba(255, 107, 157, 0.7),
        0 0 28px rgba(196, 77, 255, 0.4);
    transition: width 0.35s var(--ease-magnetic),
                height 0.35s var(--ease-magnetic),
                background 0.35s var(--ease-magnetic),
                opacity 0.35s ease;
    mix-blend-mode: screen;
}
.cursor-halo.is-active {
    width: 56px;
    height: 56px;
    background: radial-gradient(circle, rgba(255, 230, 109, 0.7), rgba(255, 107, 157, 0.3) 60%, transparent 80%);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
    .card { width: 280px; }
    .scene { padding: 70px 48px; }
    .scene1-content { right: 48px; }
    .closeup-cluster { left: 80px; max-width: 320px; }
    .reveal-motif { right: 60px; width: 240px; height: 240px; }
}

@media (max-width: 820px) {
    :root { --sidebar-w: 64px; --sidebar-w-open: 240px; }
    html, body { cursor: auto; }
    .cursor-halo { display: none; }
    .scene { padding: 60px 32px; }
    .scene-header { top: 36px; left: 32px; }
    .scene1-content {
        right: 32px;
        bottom: auto;
        top: 50%;
        transform: translateY(-50%);
    }
    .scene-4 .scene-header { top: 4vh; left: 32px; }
    .connection-band {
        grid-template-columns: 1fr;
        gap: 24px;
        width: calc(100% - 80px);
        padding: 36px 0;
    }
    .cb-divider, .cb-rail { display: none; }
    .reveal-content { margin-left: 32px; margin-top: 80px; }
    .reveal-motif { right: 24px; width: 180px; height: 180px; bottom: 8%; }
    .closeup-cluster { left: 32px; bottom: 56px; max-width: 280px; }
    .footer-strip { padding: 24px 32px; flex-wrap: wrap; }
    .fs-trace { display: none; }
    .evidence-grid { height: auto; min-height: 100vh; }
    .card {
        position: relative;
        left: auto !important;
        top: auto !important;
        width: calc(100% - 16px);
        margin: 0 auto 24px;
    }
}

@media (max-width: 540px) {
    .display-title { font-size: 56px; }
    .closeup-word { font-size: 64px; }
    .reveal-statement { font-size: 44px; }
    .scene1-content { max-width: 100%; }
}