:root {
            --bg-0: #080a0f;
            --bg-1: #141820;
            --bg-2: #1f2631;
            --card: rgba(18, 22, 29, 0.9);
            --line: rgba(192, 192, 192, 0.28);
            --silver: #c0c0c0;
            --silver-soft: #9da6b2;
            --accent: #be1e2d;
            --accent-strong: #e32636;
            --text: #e8edf2;
            --metallic-text-gradient: linear-gradient(
                110deg,
                #f8fafc 0%,
                #eef2f7 24%,
                #d3dae3 56%,
                #b4beca 100%
            );
            --metallic-pop-shadow:
                0 1px 0 rgba(250, 252, 255, 0.24),
                0 2px 0 rgba(188, 198, 211, 0.3),
                0 3px 0 rgba(110, 122, 137, 0.32);
            --aura-px-x: 50vw;
            --aura-px-y: 50vh;
            --panel-margin: clamp(10px, 1.4vw, 18px);
            --panel-radius: clamp(10px, 1vw, 14px);
            --panel-padding: clamp(12px, 1.2vw, 18px);
            --panel-gap: clamp(10px, 1vw, 14px);
            --hud-width: clamp(300px, 32vw, 440px);
            --menu-width: clamp(300px, 28vw, 380px);
        }

        * { box-sizing: border-box; }

        body {
            margin: 0;
            overflow: hidden;
            color: var(--text);
            font-family: "Avenir Next", "Segoe UI", sans-serif;
            background:
                radial-gradient(circle at 18% 18%, rgba(190, 30, 45, 0.24), transparent 34%),
                radial-gradient(circle at 85% 82%, rgba(192, 192, 192, 0.08), transparent 42%),
                linear-gradient(135deg, var(--bg-0), var(--bg-1) 48%, #10151e);
        }

        body[data-preload-intro="1"] #hud,
        body[data-preload-intro="1"] #side-menu {
            opacity: 0 !important;
            pointer-events: none !important;
            transform: translateY(-6px);
        }

        body[data-preload-intro="1"] .panel-collapse-tab {
            opacity: 0 !important;
            pointer-events: none !important;
        }

        body.startup-loading #pause-overlay,
        body.startup-loading #ui-shell,
        body.startup-loading #crosshair,
        body.startup-loading #cursor-tint,
        body.startup-loading #model-glow-overlay,
        body.startup-loading .panel-collapse-tab {
            opacity: 0 !important;
            pointer-events: none !important;
        }

        #startup-loading {
            position: fixed;
            inset: 0;
            z-index: 260;
            display: grid;
            place-items: center;
            pointer-events: auto;
            opacity: 1;
            transition: opacity 360ms ease;
            background:
                radial-gradient(circle at 50% 42%, rgba(136, 14, 30, 0.16), transparent 42%),
                linear-gradient(180deg, rgba(4, 7, 12, 0.92), rgba(6, 10, 15, 0.96));
        }

        body.startup-ready #startup-loading {
            opacity: 0;
        }

        #startup-loading[hidden] {
            display: none;
        }

        .startup-loading-card {
            width: min(360px, calc(100vw - 40px));
            border-radius: 12px;
            border: 1px solid rgba(195, 200, 210, 0.26);
            background: rgba(9, 13, 20, 0.8);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
            padding: 16px 16px 14px;
            text-align: center;
            backdrop-filter: blur(6px);
        }

        .startup-loading-title {
            margin: 0;
            font-size: 13px;
            letter-spacing: 0.09em;
            text-transform: uppercase;
            color: var(--silver);
        }

        .startup-loading-subtitle {
            margin: 6px 0 10px;
            font-size: 12px;
            color: var(--silver-soft);
        }

        .startup-loading-track {
            position: relative;
            height: 7px;
            border-radius: 999px;
            background: rgba(18, 24, 34, 0.86);
            border: 1px solid rgba(184, 191, 203, 0.22);
            overflow: hidden;
        }

        #startup-loading-bar {
            display: block;
            width: 6%;
            height: 100%;
            border-radius: inherit;
            background: linear-gradient(90deg, rgba(137, 18, 34, 0.95), rgba(193, 34, 52, 0.95));
            transition: width 240ms ease;
        }

        canvas {
            display: block;
            transition: filter 140ms ease;
        }

        body.paused-view canvas {
            filter: grayscale(0.12) brightness(0.9);
        }

        body.intro-cinematic canvas,
        body.intro-cards-ready canvas {
            filter: saturate(1.05) brightness(1) contrast(1.02);
        }

        #crosshair {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 16px;
            height: 16px;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 50;
        }

        #crosshair::before,
        #crosshair::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: rgba(232, 237, 242, 0.9);
            transform: translate(-50%, -50%);
        }

        #crosshair::before {
            width: 14px;
            height: 1px;
        }

        #crosshair::after {
            width: 1px;
            height: 14px;
        }

        body.paused-view #crosshair {
            opacity: 0.35;
        }

        body.intro-cinematic {
            cursor: none !important;
        }

        body.intro-cinematic #cursor-tint,
        body.intro-cinematic #ui-shell::before {
            opacity: 0 !important;
        }

        #cursor-tint {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 140;
            opacity: 0;
            transition: opacity 120ms ease;
            background:
                radial-gradient(
                    190px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(128, 8, 24, 0.22) 0%,
                    rgba(128, 8, 24, 0.1) 42%,
                    rgba(128, 8, 24, 0.03) 64%,
                    rgba(128, 8, 24, 0) 79%
                ),
                radial-gradient(
                    102px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(224, 156, 168, 0.1) 0%,
                    rgba(224, 156, 168, 0) 72%
                );
            mix-blend-mode: soft-light;
        }

        body.paused-view #cursor-tint {
            opacity: 0.8;
        }

        #model-glow-overlay {
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 80;
            opacity: 0;
            transition: opacity 120ms ease;
            background:
                radial-gradient(
                    172px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(120, 12, 26, 0.18) 0%,
                    rgba(120, 12, 26, 0.08) 44%,
                    rgba(120, 12, 26, 0) 76%
                ),
                radial-gradient(
                    84px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(186, 118, 131, 0.08) 0%,
                    rgba(186, 118, 131, 0) 72%
                );
            mix-blend-mode: screen;
        }

        body:not(.paused-view) #model-glow-overlay {
            opacity: 0;
        }

        body.intro-cinematic #model-glow-overlay {
            opacity: 0 !important;
        }

        #ui-shell::before {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 105;
            opacity: 0;
            transition: opacity 120ms ease;
            background:
                radial-gradient(
                    210px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(172, 28, 46, 0.2) 0%,
                    rgba(120, 10, 24, 0.14) 42%,
                    rgba(120, 10, 24, 0) 78%
                );
            mix-blend-mode: soft-light;
        }

        body.paused-view #ui-shell::before {
            opacity: 0.72;
        }

        #pause-overlay {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 90;
            opacity: 0;
            transition: opacity 140ms ease;
        }

        body.paused-view #pause-overlay {
            opacity: 1;
        }

        body.intro-exiting #pause-overlay {
            opacity: 1 !important;
            pointer-events: none !important;
        }

        #pause-overlay[data-overlay-mode="intro"] {
            pointer-events: auto;
        }

        #pause-overlay[data-overlay-mode="intro"] .pause-card {
            opacity: 0;
            transform: translate(-50%, calc(-50% + 16px)) scale(0.985);
            pointer-events: none;
        }

        #pause-overlay[data-overlay-mode="pause"] #entry-sequence {
            opacity: 0;
            transform: scale(0.99);
            pointer-events: none;
        }

        #pause-overlay[data-overlay-mode="pause"] #entry-sequence::before,
        #pause-overlay[data-overlay-mode="pause"] #entry-sequence::after {
            animation-play-state: paused;
        }

        #entry-sequence {
            position: absolute;
            inset: 0;
            overflow: hidden;
            opacity: 0;
            transform: scale(0.985);
            transition: opacity 280ms ease, transform 380ms cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        #pause-overlay[data-overlay-mode="intro"] #entry-sequence {
            opacity: 1;
            transform: scale(1);
            pointer-events: auto;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] #entry-sequence {
            opacity: 1;
            transform: scale(1);
            pointer-events: none;
        }

        #entry-sequence::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(
                    340px circle at var(--aura-px-x) var(--aura-px-y),
                    rgba(190, 30, 45, 0.2) 0%,
                    rgba(190, 30, 45, 0.1) 32%,
                    rgba(190, 30, 45, 0.036) 56%,
                    rgba(190, 30, 45, 0) 76%
                ),
                linear-gradient(180deg, rgba(2, 4, 8, 0.68), rgba(2, 4, 8, 0.12) 28%, rgba(2, 4, 8, 0.12) 72%, rgba(2, 4, 8, 0.68));
            animation: intro-vignette-breathe 6.8s ease-in-out infinite;
            z-index: 0;
        }

        #entry-sequence::after {
            content: "";
            position: absolute;
            inset: -12% -16%;
            background:
                repeating-linear-gradient(90deg, rgba(174, 41, 56, 0.07) 0 1px, transparent 1px 42px),
                repeating-linear-gradient(0deg, rgba(198, 204, 214, 0.06) 0 1px, transparent 1px 38px);
            transform: perspective(1100px) rotateX(66deg) translate3d(0, 33%, 0) scale(1.22);
            transform-origin: center 84%;
            opacity: 0.5;
            animation: intro-grid-drift 30s linear infinite;
            z-index: 0;
        }

        .entry-content {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: absolute;
            left: 50%;
            top: clamp(22px, 5.2vh, 58px);
            width: min(780px, calc(100vw - 34px));
            transform: translate(-50%, 0);
            padding: 28px 30px 24px;
            border: 1px solid rgba(201, 206, 216, 0.24);
            border-radius: 14px;
            background: rgba(7, 10, 16, 0.74);
            text-align: center;
            backdrop-filter: blur(7px);
            box-shadow: 0 16px 36px rgba(0, 0, 0, 0.42);
            pointer-events: auto;
            z-index: 3;
            opacity: 1;
            transition:
                opacity 980ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 1360ms cubic-bezier(0.16, 1, 0.3, 1),
                filter 1180ms cubic-bezier(0.16, 1, 0.3, 1);
        }

        #pause-overlay[data-overlay-mode="intro"] .entry-content {
            opacity: 0;
            transform: translate(-50%, -20px) scale(0.965);
            filter: blur(7px);
            pointer-events: none;
        }

        body.intro-cards-ready #pause-overlay[data-overlay-mode="intro"] .entry-content {
            opacity: 1;
            transform: translate(-50%, 0) scale(1);
            filter: blur(0);
            pointer-events: auto;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content {
            pointer-events: none;
            animation: entry-card-hide 560ms cubic-bezier(0.28, 0.03, 0.82, 0.16) forwards;
            animation-delay: 12ms;
            transition: none;
        }

        #pause-overlay[data-overlay-mode="intro"] .entry-content > * {
            opacity: 0;
            transform: translateY(14px) scale(0.985);
            filter: blur(5px);
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content > * {
            animation: entry-element-reveal 1320ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content > * {
            animation: entry-element-hide 560ms cubic-bezier(0.28, 0.03, 0.82, 0.16) forwards !important;
            animation-delay: var(--entry-exit-delay, 0ms) !important;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-brandline {
            --entry-exit-delay: 0ms;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-title {
            --entry-exit-delay: 55ms;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-copy {
            --entry-exit-delay: 110ms;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-click-hint {
            --entry-exit-delay: 165ms;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-hint {
            --entry-exit-delay: 220ms;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-brandline {
            animation-delay: 40ms;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-title {
            animation-delay: 180ms;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-copy {
            animation-delay: 320ms;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-click-hint {
            animation-delay: 460ms;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .entry-content .entry-hint {
            animation-delay: 560ms;
        }

        .entry-content::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 3px;
            background:
                radial-gradient(
                    circle at var(--edge-glow-x) var(--edge-glow-y),
                    rgba(246, 248, 251, 0.98) 0%,
                    rgba(255, 84, 104, 0.72) 13%,
                    rgba(190, 30, 45, 0.38) 29%,
                    rgba(190, 30, 45, 0.04) 46%,
                    rgba(190, 30, 45, 0) 58%
                ),
                linear-gradient(
                    120deg,
                    #1e0207 0%,
                    #520a16 10%,
                    #8a1322 19%,
                    #be1e2d 31%,
                    #ff5468 42%,
                    #f6f8fb 50%,
                    #ff5468 58%,
                    #be1e2d 69%,
                    #8a1322 81%,
                    #520a16 90%,
                    #1e0207 100%
                );
            background-size: 140% 140%, 260% 100%;
            background-position: var(--edge-glow-x) var(--edge-glow-y), 0 0;
            animation: panel-edge-glowing 24s linear infinite;
            opacity: 0.92;
            filter:
                drop-shadow(0 0 3px rgba(246, 248, 251, 0.24))
                drop-shadow(0 0 10px rgba(190, 30, 45, 0.34))
                drop-shadow(0 8px 18px rgba(0, 0, 0, 0.4));
            pointer-events: none;
            z-index: 2;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content::before {
            transition: none;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] #entry-sequence::before,
        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] #entry-sequence::after {
            animation-play-state: running;
            opacity: 0;
            transition: opacity 420ms ease;
        }

        .entry-brandline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin: 0 0 10px;
        }

        .entry-logo {
            width: 58px;
            height: 58px;
            object-fit: contain;
            padding: 0;
            border: none;
            background: transparent;
            border-radius: 0;
            box-shadow: none;
            filter: brightness(0.9);
        }

        .entry-kicker,
        .entry-hint {
            margin: 0;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--silver-soft);
            text-shadow:
                0 1px 0 rgba(248, 251, 255, 0.22),
                0 2px 0 rgba(164, 174, 188, 0.26);
        }

        .entry-kicker {
            font-size: 16px;
        }

        .entry-title {
            margin: 0;
            line-height: 1.04;
            letter-spacing: 0.014em;
            text-transform: uppercase;
            color: transparent;
        }

        .entry-title-line {
            display: block;
            color: #e3e9f1;
            background: var(--metallic-text-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            text-shadow: var(--metallic-pop-shadow);
            filter: none;
        }

        .entry-title-main {
            font-size: clamp(33px, 5vw, 50px);
            font-weight: 700;
            letter-spacing: 0.024em;
            white-space: nowrap;
        }

        .entry-title-sub {
            margin-top: 2px;
            font-size: clamp(19px, 2.35vw, 25px);
            font-weight: 600;
            letter-spacing: 0.14em;
            white-space: nowrap;
            opacity: 0.94;
        }

        .entry-copy {
            margin: 12px auto 16px;
            max-width: 620px;
            font-size: 14px;
            line-height: 1.46;
            color: #d3d9e2;
        }

        .entry-action-row {
            display: flex;
            gap: 8px;
            justify-content: center;
            flex-wrap: wrap;
            margin: 0 0 14px;
            font-size: 10px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            color: #a9b1bd;
        }

        .entry-action-row span {
            display: inline-flex;
            align-items: center;
            padding: 4px 8px;
            border-radius: 999px;
            border: 1px solid rgba(176, 184, 198, 0.25);
            background: rgba(9, 13, 20, 0.6);
        }

        .entry-click-hint {
            margin: 0 auto;
            min-width: 230px;
            max-width: 360px;
            padding: 10px 14px;
            border-radius: 9px;
            border: 1px solid rgba(226, 117, 128, 0.58);
            color: #fef8f8;
            background: linear-gradient(
                130deg,
                rgba(115, 12, 26, 0.94),
                rgba(146, 18, 34, 0.96) 56%,
                rgba(164, 22, 40, 0.97)
            );
            box-shadow:
                0 0 0 1px rgba(98, 12, 23, 0.52),
                0 0 22px rgba(190, 30, 45, 0.34);
            font-size: 12px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            text-align: center;
        }

        .entry-hint {
            margin: 10px 0 0;
        }

        .entry-hint strong {
            color: inherit;
        }

        .intro-controls-diagram {
            position: absolute;
            left: 50%;
            top: clamp(69%, 74vh, 86%);
            transform: translate(-50%, -50%) translateY(10px) scale(0.985);
            width: min(520px, calc(100vw - 36px));
            pointer-events: none;
            z-index: 2;
            text-align: center;
            opacity: 0;
            filter: blur(4px);
            transition:
                opacity 520ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 720ms cubic-bezier(0.16, 1, 0.3, 1),
                filter 520ms cubic-bezier(0.16, 1, 0.3, 1);
        }

        .intro-controls-diagram::before {
            content: "";
            position: absolute;
            inset: -12px -14px;
            border-radius: 12px;
            background: rgba(2, 4, 7, 0.58);
            border: 1px solid rgba(202, 209, 220, 0.2);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.24);
            z-index: -1;
        }

        body.intro-cards-ready:not(.intro-exiting) #pause-overlay[data-overlay-mode="intro"] .intro-controls-diagram {
            opacity: 0.74;
            transform: translate(-50%, -50%) translateY(0) scale(1);
            filter: blur(0);
            transition-delay: 220ms;
        }

        body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .intro-controls-diagram {
            opacity: 0;
            transform: translate(-50%, -50%) translateY(-12px) scale(0.985);
            filter: blur(5px);
            transition-duration: 220ms;
        }

        .intro-controls-grid {
            display: inline-grid;
            grid-template-columns: auto auto;
            column-gap: 12px;
            row-gap: 0;
            align-items: start;
            justify-content: center;
        }

        .intro-controls-side {
            display: flex;
            flex-direction: column;
            gap: 8px;
            align-items: center;
            margin: 0;
        }

        .intro-controls-keys {
            display: inline-flex;
            flex-direction: column;
            gap: 7px;
            align-items: center;
            margin: 0;
        }

        .intro-controls-row {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
        }

        .intro-controls-row-stack {
            flex-direction: column;
        }

        .intro-key {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 28px;
            height: 28px;
            padding: 0 10px;
            border-radius: 6px;
            border: 1px solid rgba(209, 216, 226, 0.42);
            background: rgba(7, 10, 14, 0.26);
            color: rgba(238, 243, 250, 0.88);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .intro-controls-keys .intro-key {
            width: 30px;
            min-width: 30px;
            padding: 0;
        }

        .intro-key.intro-key-wide {
            min-width: 124px;
        }

        .intro-key-arrow {
            justify-content: space-between;
            min-width: 132px;
            padding: 0 12px;
            gap: 14px;
        }

        .intro-arrow {
            font-size: 13px;
            color: rgba(246, 250, 255, 0.86);
            line-height: 1;
        }

        .intro-controls-caption {
            margin: 0;
            font-size: 11px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: rgba(209, 216, 226, 0.74);
        }

        .intro-controls-note {
            margin: 10px 0 0;
            font-size: 11px;
            letter-spacing: 0.04em;
            color: rgba(224, 230, 239, 0.68);
        }

        .intro-controls-title {
            margin: 0 0 8px;
            font-size: 12px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: rgba(228, 233, 240, 0.82);
        }

        .pause-card {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: min(420px, calc(100vw - 34px));
            isolation: isolate;
            border: 1px solid rgba(192, 192, 192, 0.28);
            border-radius: 12px;
            padding: 14px 18px;
            background: rgba(8, 10, 15, 0.68);
            backdrop-filter: blur(6px);
            text-align: center;
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3);
            transition: opacity 220ms ease, transform 320ms cubic-bezier(0.22, 0.61, 0.36, 1);
            pointer-events: none;
        }

        .pause-card::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 1.4px;
            background:
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            background-size: 260% 100%;
            pointer-events: none;
            opacity: 0;
            z-index: 2;
            animation: button-glowing 30s linear infinite;
            transition: opacity 0.2s ease;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .pause-card strong {
            display: block;
            font-size: 14px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--silver);
            margin-bottom: 5px;
        }

        .pause-card span {
            display: block;
            font-size: 12px;
            color: var(--silver-soft);
        }

        @keyframes intro-grid-drift {
            0% { transform: perspective(1100px) rotateX(66deg) translate3d(-1.5%, 33%, 0) scale(1.22); }
            100% { transform: perspective(1100px) rotateX(66deg) translate3d(1.5%, 33%, 0) scale(1.22); }
        }

        @keyframes intro-vignette-breathe {
            0%, 100% { filter: saturate(0.96); }
            50% { filter: saturate(1.08); }
        }

        @keyframes entry-element-reveal {
            0% {
                opacity: 0;
                transform: translateY(14px) scale(0.985);
                filter: blur(5px);
            }
            62% {
                opacity: 1;
                transform: translateY(-1px) scale(1.004);
                filter: blur(0);
            }
            100% {
                opacity: 1;
                transform: translateY(0) scale(1);
                filter: blur(0);
            }
        }

        @keyframes entry-element-hide {
            0% {
                opacity: 1;
                transform: translate3d(0, 0, 0) scale(1);
                filter: none;
            }
            14% {
                opacity: 1;
                transform: translate3d(0, 5px, 0) scale(0.996);
                filter: none;
            }
            58% {
                opacity: 0.96;
                transform: translate3d(0, -20vh, 0) scale(0.985);
                filter: none;
            }
            100% {
                opacity: 0;
                transform: translate3d(0, -86vh, 0) scale(0.94);
                filter: blur(1px);
            }
        }

        @keyframes entry-card-hide {
            0% {
                opacity: 1;
                transform: translate3d(-50%, 0, 0) scale(1);
                filter: none;
            }
            14% {
                opacity: 1;
                transform: translate3d(-50%, 5px, 0) scale(0.996);
                filter: none;
            }
            58% {
                opacity: 0.97;
                transform: translate3d(-50%, -20vh, 0) scale(0.985);
                filter: none;
            }
            100% {
                opacity: 0;
                transform: translate3d(-50%, -86vh, 0) scale(0.94);
                filter: blur(1px);
            }
        }

        @keyframes panel-shell-enter-left {
            0% {
                opacity: 0;
                transform: translate3d(-6px, -20vh, 0) scale(0.982);
                filter: blur(3px);
            }
            68% {
                opacity: 1;
                transform: translate3d(0, 6px, 0) scale(1.002);
                filter: blur(0);
            }
            100% {
                opacity: 1;
                transform: translate3d(0, 0, 0) scale(1);
                filter: blur(0);
            }
        }

        @keyframes panel-shell-enter-right {
            0% {
                opacity: 0;
                transform: translate3d(6px, -20vh, 0) scale(0.982);
                filter: blur(3px);
            }
            68% {
                opacity: 1;
                transform: translate3d(0, 6px, 0) scale(1.002);
                filter: blur(0);
            }
            100% {
                opacity: 1;
                transform: translate3d(0, 0, 0) scale(1);
                filter: blur(0);
            }
        }

        @keyframes panel-item-enter {
            0% {
                opacity: 0;
                transform: translateY(-22px) scale(0.986);
                filter: blur(4px);
            }
            62% {
                opacity: 1;
                transform: translateY(3px) scale(1.003);
                filter: blur(0);
            }
            100% {
                opacity: 1;
                transform: translateY(0) scale(1);
                filter: blur(0);
            }
        }

        #ui-shell {
            position: absolute;
            inset: 0;
            pointer-events: none;
            z-index: 100;
        }

        .security-warning-panel {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: absolute;
            left: 50%;
            top: 50%;
            width: min(760px, calc(100vw - 34px));
            min-height: clamp(150px, 21vh, 228px);
            transform: translate(-50%, calc(-50% + 16px)) scale(0.98);
            border: 1px solid rgba(244, 200, 82, 0.62);
            border-radius: 14px;
            padding: clamp(16px, 2.1vh, 24px) clamp(16px, 2vw, 24px) clamp(14px, 1.8vh, 20px);
            background:
                linear-gradient(145deg, rgba(31, 25, 8, 0.92), rgba(17, 14, 5, 0.92)),
                rgba(8, 10, 15, 0.78);
            box-shadow:
                0 0 0 1px rgba(197, 158, 45, 0.28),
                0 0 26px rgba(255, 208, 84, 0.22),
                0 14px 32px rgba(0, 0, 0, 0.42);
            backdrop-filter: blur(8px);
            isolation: isolate;
            display: flex;
            flex-direction: column;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            z-index: 166;
            transition:
                opacity 360ms ease,
                transform 460ms cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0s linear 360ms;
        }

        .security-warning-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 1.5px;
            background:
                radial-gradient(
                    circle at var(--edge-glow-x) var(--edge-glow-y),
                    rgba(255, 247, 194, 0.96) 0%,
                    rgba(255, 227, 118, 0.72) 13%,
                    rgba(255, 197, 48, 0.3) 31%,
                    rgba(255, 197, 48, 0) 50%
                ),
                linear-gradient(
                    118deg,
                    #352205 0%,
                    #82500d 15%,
                    #cc7c10 26%,
                    #f6c349 42%,
                    #fff4be 50%,
                    #f6c349 58%,
                    #cc7c10 74%,
                    #82500d 85%,
                    #352205 100%
                );
            background-size: 140% 140%, 260% 100%;
            background-position: var(--edge-glow-x) var(--edge-glow-y), 0 0;
            animation: panel-edge-glowing 26s linear infinite;
            filter:
                drop-shadow(0 0 4px rgba(255, 233, 144, 0.28))
                drop-shadow(0 0 12px rgba(255, 199, 53, 0.22));
            pointer-events: none;
            z-index: 2;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        body.intro-cards-ready #pause-overlay[data-overlay-mode="intro"] + #ui-shell .security-warning-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: none;
            transform: translate(-50%, -50%) scale(1);
            transition-delay: 0s;
        }

        body.security-warning-docked .security-warning-panel {
            top: clamp(10px, 2.2vh, 18px);
            width: min(880px, calc(100vw - 34px));
            min-height: 0;
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translate(-50%, 0) scale(1);
            padding: 10px 14px 9px;
            justify-content: flex-start;
            transition-delay: 0s;
        }

        .security-warning-head {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0 0 8px;
        }

        .security-warning-icon {
            display: inline-grid;
            place-items: center;
            width: 30px;
            height: 30px;
            border-radius: 999px;
            border: 1px solid rgba(255, 231, 130, 0.65);
            background: radial-gradient(circle at 50% 38%, rgba(255, 246, 200, 0.4), rgba(248, 187, 35, 0.18));
            color: #ffda70;
            font-size: 18px;
            line-height: 1;
            text-shadow: 0 0 10px rgba(255, 225, 120, 0.4);
            box-shadow: 0 0 14px rgba(255, 202, 65, 0.22);
            flex: 0 0 auto;
        }

        .security-warning-panel h2 {
            margin: 0;
            font-size: 14px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: #f3ddb0;
        }

        .security-warning-panel p {
            margin: 0;
            font-size: clamp(13px, 1.4vw, 15px);
            line-height: 1.58;
            color: #ebdeba;
        }

        .security-warning-panel a {
            color: #ffe38e;
            text-underline-offset: 2px;
            text-decoration-thickness: 1px;
        }

        .security-warning-panel a:hover {
            color: #fff2bf;
        }

        #hud {
            position: absolute;
            top: var(--panel-margin);
            left: var(--panel-margin);
            width: min(var(--hud-width), calc(100vw - (var(--panel-margin) * 2)));
            max-width: calc(100vw - (var(--panel-margin) * 2));
            pointer-events: auto;
            opacity: 1;
            transition:
                transform 560ms cubic-bezier(0.22, 0.61, 0.36, 1),
                opacity 420ms ease,
                filter 420ms ease;
            will-change: transform;
        }

        #hud.panel-collapsed {
            transform: translateX(calc(-100% - 32px));
        }

        .brand {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: relative;
            isolation: isolate;
            padding: var(--panel-padding);
            border: 1px solid var(--line);
            border-radius: var(--panel-radius);
            background: var(--card);
            backdrop-filter: blur(6px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
            transition: opacity 320ms ease, transform 460ms cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        #hud.panel-collapsed .brand {
            opacity: 0;
            transform: translateX(-14px);
            pointer-events: none;
        }

        .brand::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 1.4px;
            background:
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            background-size: 260% 100%;
            pointer-events: none;
            opacity: 0;
            z-index: 2;
            animation: button-glowing 30s linear infinite;
            transition: opacity 0.2s ease;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .brand-top {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }

        .brand-logo {
            width: 72px;
            height: 72px;
            object-fit: contain;
            padding: 0;
            border: none;
            background: transparent;
            border-radius: 0;
            box-shadow: none;
            filter: brightness(0.9);
            flex-shrink: 0;
        }

        .brand h1 {
            margin: 0;
            font-size: 18px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #d8dfe9;
        }

        .brand p {
            margin: 0;
            color: var(--silver-soft);
            font-size: 13px;
            line-height: 1.45;
        }

        .brand p strong {
            color: var(--silver);
        }

        .control-instructions {
            color: var(--silver-soft);
        }

        #side-menu {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: absolute;
            top: var(--panel-margin);
            right: var(--panel-margin);
            width: min(var(--menu-width), calc(100vw - (var(--panel-margin) * 2)));
            max-width: calc(100vw - (var(--panel-margin) * 2));
            padding: var(--panel-padding);
            border-radius: var(--panel-radius);
            border: 1px solid var(--line);
            background: var(--card);
            backdrop-filter: blur(8px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
            display: flex;
            flex-direction: column;
            gap: var(--panel-gap);
            pointer-events: auto;
            max-height: calc(100vh - (var(--panel-margin) * 2));
            overflow-y: auto;
            overscroll-behavior: contain;
            opacity: 1;
            transition:
                transform 560ms cubic-bezier(0.22, 0.61, 0.36, 1),
                opacity 420ms ease,
                filter 420ms ease;
            will-change: transform;
        }

        body.intro-cinematic #hud,
        body.intro-cinematic #side-menu,
        body.pre-entry-mode #hud,
        body.pre-entry-mode #side-menu {
            opacity: 0;
            pointer-events: none;
            filter: blur(1.8px);
        }

        body.intro-cinematic #hud {
            transform: translateY(-14px);
        }

        body.intro-cinematic #side-menu {
            transform: translateY(14px);
        }

        body.pre-entry-mode #hud {
            transform: translateY(-16px);
        }

        body.pre-entry-mode #side-menu {
            transform: translateY(16px);
        }

        body.intro-cinematic .panel-collapse-tab,
        body.pre-entry-mode .panel-collapse-tab,
        body.ui-panels-pending .panel-collapse-tab {
            opacity: 0;
            pointer-events: none;
        }

        body.ui-panels-pending #hud,
        body.ui-panels-pending #side-menu {
            opacity: 0 !important;
            pointer-events: none !important;
            filter: blur(1.8px);
        }

        body.ui-panels-pending #hud {
            transform: translateY(-20px);
        }

        body.ui-panels-pending #side-menu {
            transform: translateY(-20px);
        }

        body.ui-panels-entering #hud {
            animation: panel-shell-enter-left 780ms cubic-bezier(0.16, 1, 0.3, 1) both;
        }

        body.ui-panels-entering #side-menu {
            animation: panel-shell-enter-right 780ms cubic-bezier(0.16, 1, 0.3, 1) both;
        }

        body.ui-panels-entering #hud .brand,
        body.ui-panels-entering #side-menu > * {
            opacity: 0;
            transform: translateY(-16px) scale(0.988);
            filter: blur(4px);
            animation: panel-item-enter 620ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
            animation-delay: calc(var(--panel-item-index, 0) * 48ms);
        }

        body.ui-panels-entering #hud .brand > * {
            opacity: 0;
            transform: translateY(-14px) scale(0.992);
            filter: blur(3px);
            animation: panel-item-enter 620ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
            animation-delay: calc(110ms + (var(--hud-item-index, 0) * 56ms));
        }

        body.ui-panels-entering #hud .brand > *:nth-child(1) { --hud-item-index: 0; }
        body.ui-panels-entering #hud .brand > *:nth-child(2) { --hud-item-index: 1; }
        body.ui-panels-entering #hud .brand > *:nth-child(3) { --hud-item-index: 2; }
        body.ui-panels-entering #hud .brand > *:nth-child(4) { --hud-item-index: 3; }

        #side-menu.panel-collapsed {
            transform: translateX(calc(100% + 32px));
        }

        #side-menu > * {
            transition: opacity 320ms ease, transform 460ms cubic-bezier(0.22, 0.61, 0.36, 1);
        }

        #side-menu.panel-collapsed > * {
            opacity: 0;
            transform: translateX(14px);
            pointer-events: none;
            visibility: hidden;
        }

        #side-menu.panel-collapsed::before {
            opacity: 0 !important;
        }

        #side-menu::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            padding: 1.4px;
            background:
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            background-size: 260% 100%;
            pointer-events: none;
            opacity: 0;
            z-index: 2;
            animation: button-glowing 30s linear infinite;
            transition: opacity 0.2s ease;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        #hud:hover .brand::before,
        #side-menu:hover::before {
            opacity: 0.62;
            animation-duration: 24s;
        }

        body.paused-view #pause-overlay[data-overlay-mode="pause"] .pause-card::before {
            opacity: 0.58;
            animation-duration: 24s;
        }

        .brand::before,
        #side-menu::before,
        .pause-card::before {
            background:
                radial-gradient(
                    circle at var(--edge-glow-x) var(--edge-glow-y),
                    rgba(246, 248, 251, 0.96) 0%,
                    rgba(255, 84, 104, 0.56) 14%,
                    rgba(190, 30, 45, 0.25) 29%,
                    rgba(190, 30, 45, 0) 46%
                ),
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            background-size: 140% 140%, 260% 100%;
            background-position: var(--edge-glow-x) var(--edge-glow-y), 0 0;
            animation: panel-edge-glowing 30s linear infinite;
        }

        @media (prefers-reduced-motion: reduce) {
            #entry-sequence::after,
            .entry-content::before {
                animation: none !important;
            }

            body.intro-cards-ready #pause-overlay[data-overlay-mode="intro"] .entry-content > * {
                animation: none !important;
                opacity: 1 !important;
                transform: none !important;
                filter: none !important;
            }

            body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content,
            body.intro-exiting #pause-overlay[data-overlay-mode="intro"] .entry-content > * {
                animation: none !important;
                opacity: 0 !important;
                transform: none !important;
                filter: none !important;
            }

            body.ui-panels-entering #hud,
            body.ui-panels-entering #side-menu,
            body.ui-panels-entering #hud .brand,
            body.ui-panels-entering #hud .brand > *,
            body.ui-panels-entering #side-menu > * {
                animation: none !important;
                opacity: 1 !important;
                transform: none !important;
                filter: none !important;
            }
        }

        @keyframes panel-edge-glowing {
            0% {
                background-position: var(--edge-glow-x) var(--edge-glow-y), 0 0;
            }
            100% {
                background-position: var(--edge-glow-x) var(--edge-glow-y), 260% 0;
            }
        }

        .panel-collapse-tab {
            --edge-glow-x: 50%;
            --edge-glow-y: 50%;
            position: fixed;
            top: 50vh;
            left: 6px;
            transform: translateY(-50%);
            width: 18px;
            height: 28px;
            min-height: 0;
            padding: 0;
            border: none;
            border-radius: 6px;
            background: transparent;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.22);
            z-index: 170;
            display: grid;
            place-items: center;
            flex: 0 0 auto;
            color: var(--silver);
            line-height: 1;
            opacity: 0.88;
            pointer-events: auto;
            transition: opacity 160ms ease, color 160ms ease, transform 180ms ease;
        }

        .panel-collapse-tab::before {
            content: "";
            position: absolute;
            inset: -1px;
            border-radius: inherit;
            padding: 1px;
            background:
                radial-gradient(
                    circle at var(--edge-glow-x) var(--edge-glow-y),
                    rgba(246, 248, 251, 0.96) 0%,
                    rgba(255, 84, 104, 0.56) 14%,
                    rgba(190, 30, 45, 0.25) 29%,
                    rgba(190, 30, 45, 0) 46%
                ),
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            background-size: 140% 140%, 260% 100%;
            background-position: var(--edge-glow-x) var(--edge-glow-y), 0 0;
            pointer-events: none;
            opacity: 0.24;
            z-index: -2;
            animation: panel-edge-glowing 30s linear infinite;
            transition: opacity 160ms ease;
            -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .panel-collapse-tab::after {
            content: "";
            position: absolute;
            inset: 1px;
            border-radius: calc(6px - 1px);
            background: rgba(24, 31, 41, 0.93);
            border: none;
            z-index: -1;
            transition: background 160ms ease, border-color 160ms ease;
        }

        .panel-collapse-tab:hover {
            opacity: 1;
            color: #f2f6fb;
        }

        .panel-collapse-tab:hover::before {
            opacity: 0.62;
            animation-duration: 24s;
        }

        .panel-collapse-tab:hover::after {
            background: rgba(34, 42, 53, 0.96);
        }

        .panel-collapse-tab:active {
            transform: translateY(-50%) scale(0.86);
        }

        .panel-collapse-tab.is-pressed {
            transform: translateY(-50%) scale(0.86);
        }

        #hud-collapse-btn {
            left: 6px;
        }

        #menu-collapse-btn {
            left: auto;
            right: 6px;
        }

        .panel-collapse-glyph {
            font-size: 12px;
            font-weight: 700;
            line-height: 1;
            transform: none;
            pointer-events: none;
            position: relative;
            z-index: 1;
        }

        @media (prefers-reduced-motion: reduce) {
            #hud,
            #side-menu,
            .brand,
            #side-menu > * {
                transition: none !important;
            }
        }

        #side-menu h2 {
            margin: 0;
            font-size: 14px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #d8dfe9;
        }

        .entry-title-line {
            text-shadow: var(--metallic-pop-shadow);
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
            font-smooth: always;
        }

        @supports ((-webkit-background-clip: text) or (background-clip: text)) {
            .entry-kicker,
            .entry-title-line,
            .entry-hint,
            .brand h1,
            #side-menu h2 {
                color: transparent;
                background: var(--metallic-text-gradient);
                -webkit-background-clip: text;
                background-clip: text;
            }
        }

        .stat-row {
            display: flex;
            justify-content: space-between;
            gap: 10px;
            font-size: 13px;
            color: var(--silver-soft);
            border-bottom: 1px solid rgba(192, 192, 192, 0.12);
            padding-bottom: 8px;
        }

        .top-stat-block {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .top-stat-block .stat-row {
            font-size: 12px;
            line-height: 1.2;
            padding-bottom: 4px;
            border-bottom-color: rgba(192, 192, 192, 0.09);
        }

        .top-stat-block .stat-with-note {
            gap: 1px;
        }

        .top-stat-block .stat-note {
            font-size: 9px;
            letter-spacing: 0.03em;
        }

        .stat-row strong {
            color: var(--text);
            font-weight: 600;
        }

        .stat-with-note {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .stat-note {
            margin: 0;
            font-size: 10px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--silver-soft);
        }

        #look-at-val {
            max-width: 180px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            text-align: right;
        }

        .field-label {
            margin: 0;
            font-size: 11px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--silver-soft);
        }

        input[type="text"] {
            width: 100%;
            padding: 9px 10px;
            border: 1px solid rgba(192, 192, 192, 0.24);
            border-radius: 8px;
            background: rgba(8, 10, 15, 0.9);
            color: var(--text);
            outline: none;
        }

        input[type="text"]:focus {
            border-color: rgba(227, 38, 54, 0.75);
            box-shadow: 0 0 0 2px rgba(227, 38, 54, 0.18);
        }

        .room-search-label {
            font-weight: 700;
            color: var(--silver);
        }

        #search-input {
            border-color: rgba(226, 117, 128, 0.58);
            box-shadow: 0 0 0 1px rgba(98, 12, 23, 0.36);
        }

        #search-input:focus {
            border-color: rgba(236, 136, 148, 0.72);
            box-shadow:
                0 0 0 1px rgba(226, 117, 128, 0.58),
                0 0 0 3px rgba(227, 38, 54, 0.18);
        }

        .btn-row {
            display: flex;
            gap: 8px;
        }

        button {
            flex: 1;
            padding: 9px 10px;
            border-radius: 8px;
            border: 1px solid transparent;
            font-weight: 600;
            cursor: pointer;
            position: relative;
            isolation: isolate;
            overflow: hidden;
            background: transparent;
            color: var(--btn-text, var(--text));
            --btn-surface: rgba(26, 33, 44, 0.92);
            --btn-surface-hover: rgba(33, 41, 54, 0.96);
            --btn-border: rgba(189, 196, 209, 0.34);
            --btn-glow:
                linear-gradient(
                    120deg,
                    #2a0208 0%,
                    #7c0d1d 12%,
                    #be1e2d 24%,
                    #ff5468 36%,
                    #f6f8fb 50%,
                    #ff5468 64%,
                    #be1e2d 76%,
                    #7c0d1d 88%,
                    #2a0208 100%
                );
            transition: transform 0.16s ease, opacity 0.16s ease, color 0.16s ease;
        }

        button::before {
            content: "";
            position: absolute;
            inset: -2px;
            border-radius: inherit;
            background: var(--btn-glow);
            background-size: 260% 100%;
            filter: blur(7px);
            opacity: 0;
            z-index: -2;
            animation: button-glowing 30s linear infinite;
            transition: opacity 0.2s ease, filter 0.2s ease;
        }

        button::after {
            content: "";
            position: absolute;
            inset: 1px;
            border-radius: calc(8px - 1px);
            border: 1px solid var(--btn-border);
            background: var(--btn-surface);
            z-index: -1;
            transition: background 0.18s ease, border-color 0.18s ease;
        }

        button:hover::before {
            opacity: 1;
            filter: blur(8px);
            animation-duration: 24s;
        }

        button:hover::after {
            background: var(--btn-surface-hover);
            border-color: rgba(236, 241, 250, 0.52);
        }

        @keyframes button-glowing {
            0% { background-position: 0 0; }
            100% { background-position: 260% 0; }
        }

        button:active {
            transform: translateY(1px) scale(0.992);
        }

        .btn-primary {
            --btn-text: #fef8f8;
            --btn-surface: rgba(132, 15, 30, 0.93);
            --btn-surface-hover: rgba(164, 20, 38, 0.96);
            --btn-border: rgba(226, 117, 128, 0.58);
        }

        .btn-secondary {
            --btn-text: var(--silver);
            --btn-surface: rgba(24, 31, 41, 0.93);
            --btn-surface-hover: rgba(34, 42, 53, 0.96);
            --btn-border: rgba(192, 198, 210, 0.35);
        }

        .toggle-btn.is-on {
            --btn-text: #f6e5e7;
            --btn-surface: rgba(134, 17, 33, 0.94);
            --btn-surface-hover: rgba(166, 22, 40, 0.97);
            --btn-border: rgba(230, 116, 129, 0.62);
        }

        #split-floors-btn {
            --btn-text: #fff;
            --btn-surface: rgba(150, 16, 33, 0.94);
            --btn-surface-hover: rgba(184, 22, 43, 0.97);
            --btn-border: rgba(229, 111, 123, 0.62);
        }

        button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none !important;
        }

        button:disabled::before {
            opacity: 0.08;
            animation-duration: 30s;
        }

        button:disabled::after {
            background: rgba(24, 30, 40, 0.88);
            border-color: rgba(136, 145, 158, 0.24);
        }

        #status {
            margin: 0;
            min-height: 20px;
            font-size: 12px;
            color: var(--silver-soft);
        }

        #search-list-section {
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-height: 0;
            flex: 1 1 auto;
        }

        .search-list-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }

        .compact-btn {
            flex: 0 0 auto;
            padding: 6px 9px;
            font-size: 11px;
            border-radius: 7px;
        }

        #search-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-height: min(44vh, 360px);
            min-height: 0;
            flex: 1 1 auto;
            overflow-y: auto;
            padding-right: 2px;
            overscroll-behavior: contain;
        }

        .search-empty {
            margin: 0;
            font-size: 12px;
            color: var(--silver-soft);
            border: 1px dashed rgba(192, 192, 192, 0.2);
            border-radius: 8px;
            padding: 9px 10px;
        }

        .search-entry {
            border: 1px solid rgba(192, 192, 192, 0.2);
            border-radius: 9px;
            padding: 8px;
            background: rgba(8, 10, 15, 0.58);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .search-entry.is-hidden {
            opacity: 0.62;
        }

        .search-entry-head {
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto auto auto auto;
            align-items: center;
            gap: 4px;
        }

        .search-entry-toggle {
            display: flex;
            align-items: center;
            gap: 6px;
            min-width: 0;
            cursor: pointer;
            user-select: none;
        }

        .search-entry-toggle .search-term {
            flex: 1 1 auto;
        }

        .search-vis-toggle {
            width: 16px;
            height: 16px;
            margin: 0;
            accent-color: var(--accent);
        }

        .search-term {
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .search-term-name {
            font-size: 12px;
            color: var(--text);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .search-term-meta {
            font-size: 10px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            color: var(--silver-soft);
        }

        .entry-btn {
            flex: 0 0 auto;
            padding: 4px 5px;
            font-size: 9px;
            border-radius: 5px;
            min-width: 0;
            --btn-text: var(--silver);
            --btn-surface: rgba(27, 34, 45, 0.93);
            --btn-surface-hover: rgba(36, 44, 56, 0.96);
            --btn-border: rgba(187, 195, 208, 0.3);
        }

        .entry-btn::after {
            border-radius: calc(5px - 1px);
        }

        .entry-btn.is-on {
            --btn-text: #f6e5e7;
            --btn-surface: rgba(134, 17, 33, 0.94);
            --btn-surface-hover: rgba(166, 22, 40, 0.97);
            --btn-border: rgba(230, 116, 129, 0.62);
        }

        .label-toggle-btn {
            min-width: 44px;
            padding-inline: 4px;
        }

        .entry-icon-btn {
            width: 23px;
            height: 23px;
            padding: 3px;
            display: inline-grid;
            place-items: center;
        }

        .entry-icon-img {
            width: 11px;
            height: 11px;
            object-fit: contain;
            filter: brightness(0) saturate(100%) invert(100%);
            pointer-events: none;
        }

        .color-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            min-width: 52px;
        }

        .color-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.5);
            flex-shrink: 0;
        }

        .palette-grid {
            display: none;
            grid-template-columns: repeat(8, minmax(0, 1fr));
            gap: 5px;
        }

        .search-entry.show-palette .palette-grid {
            display: grid;
        }

        .swatch-btn {
            flex: 0 0 auto;
            width: 100%;
            aspect-ratio: 1 / 1;
            border-radius: 6px;
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 0;
            min-width: 0;
            --btn-surface: transparent;
            --btn-surface-hover: transparent;
            --btn-border: transparent;
        }

        .swatch-btn::before,
        .swatch-btn::after {
            display: none;
        }

        .swatch-btn.is-selected {
            outline: 2px solid rgba(255, 255, 255, 0.75);
            outline-offset: 1px;
        }

        .search-object-list {
            display: none;
            flex-direction: column;
            gap: 4px;
            max-height: min(24vh, 220px);
            min-height: 0;
            overflow-y: auto;
            padding-right: 2px;
            border-top: 1px solid rgba(192, 192, 192, 0.15);
            padding-top: 7px;
            overscroll-behavior: contain;
        }

        .search-entry.is-expanded .search-object-list {
            display: flex;
        }

        .search-object-row {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 11px;
            color: var(--silver-soft);
        }

        .search-object-toggle {
            display: flex;
            align-items: center;
            gap: 7px;
            min-width: 0;
            flex: 1 1 auto;
            cursor: pointer;
            user-select: none;
        }

        .search-object-row input {
            margin: 0;
            width: 14px;
            height: 14px;
            accent-color: var(--accent);
            flex: 0 0 auto;
        }

        .search-object-name {
            min-width: 0;
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .object-teleport-btn {
            flex: 0 0 auto;
            min-width: 0;
            padding: 4px 7px;
            font-size: 10px;
            border-radius: 6px;
            --btn-text: #f7d9de;
            --btn-surface: rgba(126, 13, 28, 0.93);
            --btn-surface-hover: rgba(156, 18, 35, 0.96);
            --btn-border: rgba(226, 108, 121, 0.56);
        }

        @media (max-width: 1180px) {
            :root {
                --hud-width: clamp(300px, 40vw, 430px);
                --menu-width: clamp(290px, 36vw, 360px);
            }
        }

        @media (max-width: 960px) {
            :root {
                --panel-margin: clamp(8px, 1.2vw, 14px);
                --panel-padding: clamp(10px, 1.2vw, 14px);
                --hud-width: clamp(240px, 45vw, 410px);
                --menu-width: clamp(240px, 45vw, 380px);
            }

            #side-menu {
                max-height: min(72vh, calc(100vh - (var(--panel-margin) * 2)));
            }
        }

        @media (max-height: 860px) {
            :root {
                --panel-padding: clamp(10px, 1.1vw, 14px);
                --panel-gap: clamp(8px, 0.9vw, 11px);
            }

            .brand h1 {
                font-size: 16px;
            }

            .brand p {
                font-size: 12px;
            }

            #side-menu {
                max-height: min(68vh, calc(100vh - (var(--panel-margin) * 2)));
            }

            #search-list {
                max-height: min(36vh, 280px);
            }
        }

        @media (max-height: 740px) {
            #side-menu {
                max-height: min(62vh, calc(100vh - (var(--panel-margin) * 2)));
            }

            .intro-controls-diagram {
                top: clamp(72%, 77vh, 90%);
            }

            .security-warning-panel {
                min-height: clamp(132px, 26vh, 186px);
            }

            #search-list {
                max-height: min(30vh, 220px);
            }

            .search-object-list {
                max-height: min(18vh, 140px);
            }
        }

        @media (max-width: 780px) {
            :root {
                --panel-margin: 8px;
                --panel-padding: 10px;
                --panel-gap: 9px;
                --hud-width: clamp(200px, 46vw, 320px);
                --menu-width: clamp(200px, 46vw, 320px);
            }

            #side-menu {
                max-height: min(72vh, calc(100vh - (var(--panel-margin) * 2)));
            }

            #entry-sequence::after {
                opacity: 0.36;
                transform: perspective(900px) rotateX(70deg) translate3d(0, 39%, 0) scale(1.28);
            }

            .entry-content {
                width: calc(100vw - 24px);
                top: 14px;
                padding: 18px 16px 16px;
            }

            .entry-logo {
                width: 50px;
                height: 50px;
                padding: 0;
            }

            .entry-title-main,
            .entry-title-sub {
                white-space: normal;
            }

            .entry-title-main {
                font-size: clamp(28px, 8.8vw, 39px);
            }

            .entry-title-sub {
                font-size: clamp(15px, 5.1vw, 21px);
                letter-spacing: 0.08em;
            }

            .entry-copy {
                font-size: 13px;
            }

            .entry-action-row {
                font-size: 9px;
            }

            .intro-controls-diagram {
                top: clamp(73%, 78vh, 90%);
                width: calc(100vw - 24px);
            }

            .intro-controls-diagram::before {
                inset: -10px -10px;
            }

            .intro-controls-grid {
                column-gap: 10px;
                row-gap: 0;
            }

            .intro-key {
                min-width: 25px;
                height: 25px;
                padding: 0 8px;
                font-size: 11px;
            }

            .intro-key.intro-key-wide {
                min-width: 98px;
            }

            .intro-key-arrow {
                min-width: 106px;
                padding: 0 10px;
                gap: 11px;
            }

            .intro-controls-caption,
            .intro-controls-note {
                font-size: 10px;
            }

            .brand-logo {
                width: 58px;
                height: 58px;
            }

            .security-warning-panel {
                width: calc(100vw - 24px);
                min-height: clamp(136px, 24vh, 194px);
                padding: clamp(14px, 2.1vh, 18px) clamp(13px, 3vw, 18px) clamp(12px, 1.8vh, 16px);
            }

            body.security-warning-docked .security-warning-panel {
                top: 8px;
                width: calc(100vw - 24px);
                padding: 9px 11px 8px;
            }

            .security-warning-panel p {
                font-size: 12px;
                line-height: 1.45;
            }

            .security-warning-icon {
                width: 28px;
                height: 28px;
                font-size: 16px;
            }

            .brand h1 {
                font-size: 16px;
            }
        }

        @media (max-width: 600px) {
            :root {
                --panel-margin: 6px;
                --panel-padding: 8px;
                --panel-gap: 8px;
                --hud-width: clamp(170px, 47vw, 280px);
                --menu-width: clamp(170px, 47vw, 280px);
            }

            .brand h1 {
                font-size: 14px;
                letter-spacing: 0.06em;
            }

            .brand p,
            #status,
            .stat-row {
                font-size: 11px;
            }

            .top-stat-block .stat-note,
            .stat-note,
            .field-label {
                font-size: 9px;
            }

            #side-menu {
                max-height: min(74vh, calc(100vh - (var(--panel-margin) * 2)));
            }

            .intro-controls-diagram {
                top: clamp(75%, 80vh, 92%);
            }

            .security-warning-panel {
                min-height: clamp(126px, 21vh, 174px);
            }

            .security-warning-panel h2 {
                font-size: 12px;
                letter-spacing: 0.08em;
            }

            .security-warning-panel p {
                font-size: 11px;
                line-height: 1.42;
            }

            .security-warning-icon {
                width: 24px;
                height: 24px;
                font-size: 14px;
            }
        }

        /* SEO footer — visible to crawlers and screen readers, tucked below the app */
        #seo-content {
            position: absolute;
            left: -9999px;
            top: auto;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0 0 0 0);
            white-space: nowrap;
        }