/* ========================================================
   BUDA OPUS 0 · 全站设计系统 (纯净工业流式自适应)
   ======================================================== */
@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@600;700&family=Kalam:wght@400;700&display=swap');

:root {
    --bg-light: #F4F4F0;
    --bg-dark: #0D0D10;
    --siren-gunship: #7A7F82;
    --ink-black: #141418;
    --ink-gray: #32353B;
    --ink-subtle: #52565E;
    --ink-reject: #D9383A;
    --line-subtle: rgba(0, 0, 0, 0.06);
    --gravity-damping: cubic-bezier(0.16, 1, 0.3, 1);
    --homing-damping: cubic-bezier(0.2, 0.8, 0.2, 1);

    --header-h: 80px;
    --header-gap-bottom: 9px;
    --footer-h: 64px;
    --pad-x: 64px;
    --logo-w: 156px;
    --dock-icon-w: 32px;
    --stage-gap-top: 16px;
    --stage-gap-bottom: 38px;
}

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

html, body {
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-light);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    user-select: none;
    margin: 0;
    padding: 0;
}

/* ========================================================
   核心视窗：纯净工业通栏 (严禁任何阴影与双色块)
   ======================================================== */
#app-frame {
    position: relative;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-light);
    overflow: hidden;
    box-shadow: none !important;
}

/* ========================================================
   [1] 顶部指挥顶栏
   ======================================================== */
#global-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    padding: 0 var(--pad-x) var(--header-gap-bottom) var(--pad-x);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    z-index: 1000;
}

#header-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-subtle);
    opacity: 0;
    transition: opacity 1.0s ease;
}

#header-divider.show {
    opacity: 1;
}

#buda-box {
    width: var(--logo-w);
    transform-origin: center center;
    opacity: 0;
    pointer-events: none;
    cursor: default;
    transition: opacity 0.2s ease;
}

#buda-box.interactive {
    pointer-events: auto;
    cursor: pointer;
}

#buda-box.interactive:hover {
    opacity: 0.7;
}

#buda-box img {
    width: 100%;
    height: auto;
    display: block;
}

.product-dock-matrix {
    display: flex;
    gap: 20px;
    align-items: flex-end;
}

.dock-slot {
    width: var(--dock-icon-w);
    opacity: 0;
    transition: opacity 1.0s ease;
}

.dock-slot img {
    width: 100%;
    height: auto;
    display: block;
}

.dock-slot.show {
    opacity: 1;
}

/* ========================================================
   [2] 核心舞台视窗
   ======================================================== */
#stage-viewport {
    position: absolute;
    top: var(--header-h);
    bottom: var(--footer-h);
    left: 0;
    right: 0;
    overflow: hidden;
    z-index: 100;
    cursor: pointer;
}

.stage-safe-container {
    position: absolute;
    top: var(--stage-gap-top);
    bottom: var(--stage-gap-bottom);
    left: var(--pad-x);
    right: var(--pad-x);
    pointer-events: auto;
    transition: opacity 0.3s ease;
}

.stage-safe-container.stage-exiting {
    opacity: 0;
}

/* ========================================================
   Stage 1: OBS Bento Grid (纯净边缘与无缝压暗闭环)
   ======================================================== */
#obs-bento-grid {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: 3px;
    background-color: var(--bg-light); /* 明亮态：透出白色分割细缝 */
    overflow: hidden;
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.8s ease, background-color 1.0s ease, clip-path 0.4s ease;
}

#obs-bento-grid.active {
    opacity: 1;
}

#obs-bento-grid.defocused {
    /* 核心 1：压暗时背景转黑，内部 3px 白色网格缝自然隐入暗色大盘 */
    background-color: #141418;
    /* 核心 2：内切 1px，剔除外围亚像素浮点溢出黑线 */
    clip-path: inset(1px);
}

#obs-bento-grid.stage1-fadeout,
#obs-logic-overlay.stage1-fadeout {
    opacity: 0 !important;
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.bento-tile {
    position: relative;
    overflow: hidden;
    background: #1A1A1E;
    opacity: 0;
    transform: translateY(32px);
    transition: transform 1.3s var(--gravity-damping), opacity 0.9s ease;
}

.bento-tile.slid-in {
    opacity: 1;
    transform: translateY(0);
}

.bento-tile img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: filter 1.0s ease, transform 1.2s ease;
}

#obs-bento-grid.defocused .bento-tile img {
    filter: brightness(0.48) blur(5px);
    transform: scale(1.04);
}

.tile-hud {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 9px;
    background: rgba(10, 14, 18, 0.88);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11px;
    font-weight: 500;
    color: #E2E8F0;
    border-radius: 2px;
    z-index: 10;
}

.tile-hud span.val {
    color: #00FF7F;
    font-weight: 700;
}

#obs-bento-grid.defocused .tile-hud {
    opacity: 0;
}

.tile-1 { grid-column: 1 / span 5; grid-row: 1 / span 4; }
.tile-5 { grid-column: 6 / span 2; grid-row: 1 / span 4; }
.tile-2 { grid-column: 8 / span 3; grid-row: 1 / span 4; }
.tile-4 { grid-column: 11 / span 2; grid-row: 1 / span 3; }
.tile-3 { grid-column: 11 / span 2; grid-row: 4 / span 3; }
.tile-9 { grid-column: 1 / span 3; grid-row: 5 / span 2; }
.tile-6 { grid-column: 4 / span 2; grid-row: 5 / span 2; }
.tile-7 { grid-column: 6 / span 2; grid-row: 5 / span 2; }
.tile-8 { grid-column: 8 / span 3; grid-row: 5 / span 2; }

#obs-logic-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s ease;
    z-index: 200;
}

#obs-logic-overlay.active {
    opacity: 1;
}

.logic-formula-bar {
    width: 780px;
    background: rgba(244, 244, 240, 0.96);
    backdrop-filter: blur(14px);
    padding: 14px 28px;
    border: 1px solid rgba(0, 0, 0, 0.15);
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.22);
    border-radius: 2px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    opacity: 0;
    transform: translateY(-12px);
    transition: opacity 1.5s ease, transform 1.5s var(--gravity-damping);
}

.logic-formula-bar.show {
    opacity: 1;
    transform: translateY(0);
}

.formula-header {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding-bottom: 8px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 10px;
    color: rgba(20, 20, 24, 0.55);
}

.formula-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 13.5px;
    font-weight: 700;
    color: #141418;
}

.formula-arrow {
    color: rgba(0, 0, 0, 0.35);
    font-weight: bold;
}

.variable-stream {
    width: 780px;
    margin-top: 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.var-line {
    background: rgba(13, 16, 20, 0.94);
    backdrop-filter: blur(10px);
    border-left: 3px solid rgba(255, 255, 255, 0.4);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 11px 18px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11.5px;
    color: #F4F4F0;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.5s ease, transform 0.5s var(--gravity-damping);
}

.var-line.show {
    opacity: 1;
    transform: translateY(0);
}

.var-line span.code {
    color: #CBD5E0;
    font-weight: 700;
    margin-right: 10px;
}

.var-line.trans-buffer {
    border-left: 3px solid #F59E0B;
    background: rgba(28, 20, 10, 0.95);
    color: #FDE68A;
}

.var-line.trans-buffer span.code {
    color: #F59E0B;
}

.pulse-dots::after {
    content: ' .';
    display: inline-block;
    width: 24px;
    text-align: left;
    animation: dotPulse 1.2s infinite steps(1, start);
}

@keyframes dotPulse {
    0% { content: ' .'; }
    33% { content: ' ..'; }
    66% { content: ' ...'; }
    100% { content: ' .'; }
}

.pulse-dots.frozen::after {
    content: ' ...';
    animation: none;
}

.var-line.crash-alert {
    border-left: 3px solid #FF2E4D;
    background: rgba(42, 10, 16, 0.96);
    color: #FFE4E6;
}

.var-line.crash-alert span.code {
    color: #FF2E4D;
}

/* Stage 2: HYP 纯思维推演场 */
#hyp-thinking-space {
    position: absolute;
    inset: 0;
    background-color: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 1.0s ease;
    z-index: 300;
}

#hyp-thinking-space.active {
    opacity: 1;
    pointer-events: auto;
}

#hyp-board {
    position: relative;
    width: 1080px;
    height: 540px;
}

#hyp-chalk-content {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

#hyp-chalk-content.faded {
    opacity: 0 !important;
}

#hyp-sketch-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 320;
}

.hyp-line {
    fill: none;
    stroke: var(--ink-black);
    stroke-width: 1.8px;
    stroke-linecap: round;
}

.hyp-reject-slash {
    fill: none;
    stroke: var(--ink-reject);
    stroke-width: 3.2px;
    stroke-linecap: round;
}

.hyp-encircle-path {
    fill: none;
    stroke: var(--ink-black);
    stroke-width: 1.8px;
    stroke-linecap: round;
}

#hyp-nodes-stage {
    position: absolute;
    inset: 0;
    font-family: 'Kalam', 'Caveat', 'Ink Free', 'Chalkboard SE', 'Segoe Print', cursive, sans-serif;
    z-index: 310;
}

.hyp-node {
    position: absolute;
    padding: 2px 4px;
    color: var(--ink-black);
    white-space: nowrap;
    user-select: none;
    opacity: 0;
    font-family: 'Kalam', 'Caveat', 'Ink Free', 'Chalkboard SE', 'Segoe Print', cursive, sans-serif;
    transition: opacity 0.5s ease;
}

.hyp-node.show {
    opacity: 1;
}

.hyp-node.weight-small {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink-black);
    letter-spacing: 0.02em;
}

.hyp-node.weight-small .val {
    color: var(--ink-gray);
    font-weight: 400;
    margin-left: 8px;
}

.hyp-node.weight-medium {
    font-size: 18px;
    font-weight: 700;
    color: var(--ink-black);
    letter-spacing: 0.02em;
}

.hyp-node.weight-large {
    font-size: 21px;
    font-weight: 700;
    color: var(--ink-black);
    letter-spacing: 0.03em;
}

.hyp-node.weight-ladder {
    position: absolute;
    top: 440px !important;
    bottom: auto !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: auto !important;
    height: auto !important;
    font-size: 23px;
    font-weight: 700;
    font-style: italic;
    color: var(--ink-black);
    display: flex;
    align-items: center;
    gap: 14px;
    letter-spacing: 0.05em;
    white-space: nowrap;
    z-index: 315;
}

.chalk-text {
    display: inline-block;
    clip-path: polygon(0 0, 0 0, 0 100%, 0 100%);
    animation: chalkWipe 0.65s cubic-bezier(0.1, 0.6, 0.3, 1) forwards;
}

@keyframes chalkWipe {
    0% { clip-path: polygon(0 0, 0 0, 0 100%, 0 100%); }
    100% { clip-path: polygon(0 0, 115% 0, 105% 100%, 0 100%); }
}

.ladder-qmark-svg {
    width: 28px;
    height: 38px;
    overflow: visible;
    display: inline-block;
    vertical-align: middle;
    transform: skewX(-12deg);
}

.qmark-hook-path {
    fill: none;
    stroke: var(--ink-black);
    stroke-width: 3.2px;
    stroke-linecap: round;
    stroke-dasharray: 60;
    stroke-dashoffset: 60;
    transition: stroke-dashoffset 0.4s ease;
}

.qmark-hook-path.draw {
    stroke-dashoffset: 0;
}

.qmark-dot-elem {
    fill: var(--ink-black);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.qmark-dot-elem.draw {
    opacity: 1;
}

#hyp-axiom-layer {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 2.0s cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 340;
}

#hyp-axiom-layer.active {
    opacity: 1;
}

#hyp-axiom-layer.closing {
    opacity: 0 !important;
    transition: opacity 1.2s ease !important;
}

#hyp-final-question {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 24px;
    font-weight: 500;
    color: var(--ink-black);
    letter-spacing: -0.01em;
    text-align: center;
}

/* ========================================================
   Stage 3: ACT 空间操作系统
   ======================================================== */
#act-stage-root {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 350;
    background: transparent;
}

.act-launcher {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    transition: opacity 0.5s ease;
}

.act-launch-btn {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.act-launch-svg {
    width: 64px;
    height: 64px;
    opacity: 0;
    transition: opacity 0.8s ease;
    filter: none !important;
}

.act-launch-svg.show {
    opacity: 1;
}

.act-launch-ripple {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 72px;
    height: 72px;
    border: 1.5px solid #00AEEF;
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
}

.act-launch-ripple.expand {
    animation: actRippleAnim 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes actRippleAnim {
    0% { transform: scale(0.6); opacity: 0.9; }
    100% { transform: scale(3.5); opacity: 0; }
}

.act-cursor {
    position: absolute;
    top: 130px;
    left: 110px;
    opacity: 0;
    pointer-events: none;
    z-index: 60;
    transition: transform 0.9s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.3s ease;
}

.act-cursor.move-in {
    opacity: 1;
    transform: translate(-90px, -110px);
}

.act-cursor.click {
    transform: translate(-90px, -110px) scale(0.85);
}

.act-spatial-stage {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    height: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 2px;
    overflow: hidden;
    background: transparent !important;
    box-shadow: none !important;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.act-spatial-stage.show {
    opacity: 1;
}

.act-view {
    position: absolute;
    inset: 0;
    opacity: 0;
    will-change: opacity, transform;
}

#act-aisle-view {
    z-index: 1;
    display: block;
    overflow: hidden;
}

#act-topdown-view {
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

#act-ui-view {
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.act-media-img, .act-topdown-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none !important;
    -webkit-user-drag: none !important;
    user-select: none !important;
}

.act-ui-viewport {
    width: 100%;
    height: 100%;
    transform-origin: center center;
    transition: transform 2.2s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: transform;
}

.act-ui-viewport.zoom-top-left {
    transform: scale(1.52) translate(17%, 17%);
}

.act-ui-viewport.zoom-bottom-right {
    transform: scale(1.52) translate(-17%, -17%);
}

.act-ui-viewport.zoom-return {
    transform: scale(1.0) translate(0%, 0%);
}

.act-ui-viewport.diverge {
    transform: scale(1.22);
    transition: transform 3.0s ease-out;
}

.act-topdown-img {
    will-change: transform;
}

.act-aisle-track {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    transform-origin: center center !important;
    will-change: transform;
    transition: none !important;
}

.act-hud-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 295px;
    z-index: 25;
    pointer-events: none;
    opacity: 0;
    transform: translateX(-14px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.act-hud-overlay.visible {
    opacity: 1;
    transform: translateX(0);
}

.act-tele-panel {
    background: rgba(14, 16, 20, 0.52);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-left: 3px solid #00AEEF;
    padding: 10px 14px;
    border-radius: 3px;
}

.act-tele-head {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 5px;
    margin-bottom: 6px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 9.5px;
    font-weight: 700;
    color: #A0A6AD;
}

.act-tele-head .freq {
    color: #00AEEF;
}

.act-tele-body {
    display: flex;
    flex-direction: column;
    gap: 3px;
    height: 94px;
    overflow: hidden;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 10.5px;
}

.act-tele-row {
    color: #E2E5E8;
    white-space: nowrap;
}

.act-tele-row .sec {
    color: #8F959E;
    margin-right: 5px;
}

.act-alert-box {
    margin-top: 6px;
    padding: 6px 9px;
    background: rgba(255, 60, 60, 0.22);
    border: 1px solid #FF3C3C;
    color: #FF6666;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.35;
    display: none;
    border-radius: 2px;
}

.act-alert-box.show {
    display: block;
    animation: flashActAlert 0.4s alternate infinite ease-in-out;
}

@keyframes flashActAlert {
    from { opacity: 1; }
    to { opacity: 0.65; }
}

.act-requirements-box {
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    width: 285px;
    height: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 30;
    pointer-events: none;
    padding: 12px 16px;
    background: rgba(14, 16, 20, 0.52);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    opacity: 0;
    transition: right 1.5s cubic-bezier(0.25, 1, 0.5, 1), transform 1.5s cubic-bezier(0.25, 1, 0.5, 1), width 1.5s cubic-bezier(0.25, 1, 0.5, 1), background 0.8s ease, backdrop-filter 0.8s ease, -webkit-backdrop-filter 0.8s ease, border-color 0.8s ease, box-shadow 0.8s ease, opacity 0.4s ease;
}

.act-requirements-box.show-box {
    opacity: 1;
}

.act-req-line {
    display: none;
    align-items: center;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.04em;
    opacity: 0;
    transform: translateX(12px);
    transition: opacity 0.35s ease, transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), color 1.2s ease;
}

.act-req-line.visible {
    display: flex;
    opacity: 1;
    transform: translateX(0);
}

.act-req-line .idx {
    color: #00AEEF;
    width: 28px;
    flex-shrink: 0;
}

.act-req-line .val {
    color: #F0F2F5;
    transition: color 1.2s ease;
    white-space: nowrap;
}

.act-requirements-box.centered {
    right: 50% !important;
    transform: translate(50%, -50%) scale(1.16) !important;
    width: 320px !important;
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-color: transparent !important;
    box-shadow: none !important;
    gap: 13px;
}

.act-requirements-box.centered .act-req-line .val {
    color: #141418 !important;
    font-size: 13px;
    font-weight: 700;
}

.act-requirements-box.centered .act-req-line .idx {
    color: #00AEEF !important;
    font-size: 13px;
    font-weight: 700;
}

/* ========================================================
   Stage 4: SIREN 通用机器人底盘
   ======================================================== */
.siren-stage-root {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 360;
    background: transparent;
}

.siren-logo-stage {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    opacity: 0;
    pointer-events: none;
}

.siren-logo-box {
    width: 170px;
    height: 170px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.siren-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 1.4s cubic-bezier(0.16, 1, 0.3, 1), transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.siren-logo-img.visible {
    opacity: 1;
    transform: scale(1.0);
}

.siren-spatial-stage {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    height: 100%;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: transparent !important;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.8s ease;
    container-type: size;
    container-name: sirenStage;
}

.siren-spatial-stage.show {
    opacity: 1;
}

.siren-stage-layout {
    --stage-pad: clamp(24px, 2.8cqw, 44px);
    --stage-gap: clamp(32px, 3.6cqw, 52px);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 1560px;
    height: 88%;
    display: flex;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--stage-gap);
    padding: 0 var(--stage-pad);
    box-sizing: border-box;
}

.siren-chassis-workstation {
    height: 100%;
    display: flex;
    align-items: stretch;
    justify-content: center;
    flex-shrink: 1;
    min-width: 0;
    opacity: 0;
    transform: translateX(calc(50cqw - 50% - var(--stage-pad)));
    transition: transform 1.5s cubic-bezier(0.25, 1, 0.5, 1), opacity 1.0s ease;
    z-index: 20;
}

.siren-chassis-workstation.visible {
    opacity: 1;
}

.siren-chassis-workstation.docked-left {
    transform: translateX(0);
}

.siren-chassis-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
}

.siren-view-indicator {
    font-family: "SF Mono", Consolas, monospace;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #6C737D;
    height: 22px;
    line-height: 22px;
    align-self: flex-start;
    padding-left: 2px;
}

.siren-canvas-box {
    position: relative;
    height: min(calc(100% - 50px), calc((100cqw - 380px - var(--stage-gap) - 2 * var(--stage-pad)) * 5 / 7));
    max-height: calc(100% - 50px);
    aspect-ratio: 7 / 5;
    border-radius: 3px;
    overflow: visible;
}

.siren-img-layer {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(0.97);
    transition: opacity 0.9s cubic-bezier(0.25, 1, 0.5, 1), transform 0.9s cubic-bezier(0.25, 1, 0.5, 1);
    pointer-events: none;
}

.siren-img-layer.active {
    opacity: 1;
    transform: scale(1.0);
    pointer-events: auto;
}

.siren-img-layer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    pointer-events: none;
}

.siren-hitbox {
    position: absolute;
    cursor: crosshair;
    z-index: 30;
    background: rgba(0, 0, 0, 0.001);
}

.siren-floating-card {
    position: absolute;
    width: 320px;
    background: rgba(16, 20, 26, 0.68) !important;
    backdrop-filter: blur(16px) saturate(140%) !important;
    -webkit-backdrop-filter: blur(16px) saturate(140%) !important;
    border: 1px solid rgba(255, 255, 255, 0.18) !important;
    border-left: 3px solid #00AEEF !important;
    border-radius: 4px;
    padding: 14px 18px;
    color: #FFF;
    font-family: "SF Mono", Consolas, monospace;
    pointer-events: none;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 60;
    box-shadow: 0 20px 48px rgba(0, 0, 0, 0.38) !important;
}

.siren-floating-card.active {
    opacity: 1;
    transform: scale(1.0);
}

.siren-floating-card .card-head {
    font-size: 12px;
    font-weight: 700;
    color: #00AEEF;
    letter-spacing: 0.06em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 6px;
    margin-bottom: 8px;
}

.siren-floating-card .card-body {
    font-size: 12px;
    color: #F0F2F5;
    line-height: 1.5;
}

.siren-view-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    height: 24px;
}

.siren-nav-arrow {
    background: transparent;
    border: none;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 16px;
    font-weight: 700;
    color: #6C737D;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
    padding: 2px 6px;
    line-height: 1;
}

.siren-nav-arrow:hover {
    color: #00AEEF;
    transform: scale(1.15);
}

.siren-dots {
    display: flex;
    align-items: center;
    gap: 6px;
}

.siren-dots .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #CBD0D6;
    transition: background 0.3s ease;
}

.siren-dots .dot.active {
    background: #00AEEF;
}

.siren-dots .dot-line {
    width: 20px;
    height: 1px;
    background: #D2D6DC;
}

.siren-specs-panel {
    flex: 1;
    min-width: 380px;
    max-width: 520px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 15;
}

.siren-specs-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

.siren-telemetry-banner {
    background: rgba(14, 16, 20, 0.05);
    border: 1px solid rgba(20, 20, 24, 0.1);
    border-radius: 2px;
    padding: 7px 12px;
    min-height: 36px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex-shrink: 0;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.siren-telemetry-banner.active {
    opacity: 1;
    transform: translateY(0);
}

.siren-telemetry-banner .banner-track {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px 8px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11.5px;
    font-weight: 700;
}

.siren-telemetry-banner .banner-status {
    color: #383F48;
    letter-spacing: 0.04em;
    white-space: nowrap;
    flex-shrink: 0;
}

.siren-telemetry-banner .banner-action {
    background: transparent;
    border: none;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11.5px;
    font-weight: 700;
    color: #00AEEF;
    cursor: pointer;
    padding: 0 4px;
    white-space: nowrap;
    flex-shrink: 0;
    margin-left: auto;
    transition: opacity 0.2s ease;
}

.siren-telemetry-banner .banner-action:hover {
    opacity: 0.75;
}

.siren-telemetry-banner .banner-progress-rail {
    width: 100%;
    height: 3px;
    background: rgba(0, 0, 0, 0.08);
    margin-top: 6px;
    overflow: hidden;
    border-radius: 2px;
}

.siren-telemetry-banner .banner-progress-fill {
    width: 100%;
    height: 100%;
    background: #00AEEF;
    border-radius: 2px;
    box-shadow: 0 0 6px rgba(0, 174, 239, 0.45);
    transition: width 0.1s linear;
}

.siren-specs-content {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    margin-top: 8px;
}

.siren-spec-header {
    flex-shrink: 0;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.siren-spec-header .brand-title {
    font-family: "SF Mono", Consolas, monospace;
    font-size: 18px;
    line-height: 1.25;
    font-weight: 800;
    color: #141418;
    letter-spacing: 0.03em;
    margin-bottom: 3px;
}

.siren-spec-header .brand-motto {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 13px;
    line-height: 1.4;
    font-weight: 600;
    color: #555D68;
}

.siren-spec-grid {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 8px 14px 8px 0;
    margin: 6px 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(20, 20, 24, 0.32) rgba(0, 0, 0, 0.05);
}

.siren-spec-grid::-webkit-scrollbar {
    width: 4px;
}

.siren-spec-grid::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 2px;
}

.siren-spec-grid::-webkit-scrollbar-thumb {
    background: rgba(20, 20, 24, 0.3);
    border-radius: 2px;
}

.siren-spec-grid::-webkit-scrollbar-thumb:hover {
    background: #00AEEF;
}

.spec-block {
    display: flex;
    gap: 10px;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 14px;
    line-height: 1.5;
    color: #383F48;
}

.spec-block .num {
    color: #00AEEF;
    font-weight: 800;
    flex-shrink: 0;
    font-size: 14px;
}

.spec-block .txt strong {
    color: #141418;
    font-weight: 800;
}

.siren-spec-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding-top: 8px;
    flex-shrink: 0;
    margin-top: auto;
}

.siren-spec-footer .quote {
    font-family: 'Newsreader', Georgia, serif;
    font-style: italic;
    font-size: 13px;
    line-height: 1.4;
    color: #5A626F;
    margin-bottom: 3px;
}

.siren-spec-footer .credit {
    font-family: "SF Mono", Consolas, monospace;
    font-size: 12px;
    line-height: 1.4;
    font-weight: 700;
    color: #8C94A0;
    letter-spacing: 0.05em;
    text-align: right;
}

/* ========================================================
   [3] 物理基准线与工控行进导轨
   ======================================================== */
#ground-rail-system {
    position: absolute;
    bottom: var(--footer-h);
    left: 0;
    right: 0;
    height: 1px;
    z-index: 1200;
    pointer-events: none;
}

#ground-divider-line {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-subtle);
}

#siren-chassis {
    position: absolute;
    bottom: 0px;
    left: 0px;
    width: 38px;
    height: 27px;
    opacity: 0;
    transition: opacity 0.5s ease;
    will-change: transform;
    z-index: 1210;
}

#siren-chassis.active {
    opacity: 1;
}

#siren-chassis.chassis-sleeping {
    opacity: 0 !important;
    transition: opacity 1.2s ease;
}

#siren-chassis.chassis-homing {
    transition: transform 1.0s var(--homing-damping) !important;
}

.chassis-svg {
    display: block;
    width: 100%;
    height: 100%;
}

.siren-mat {
    fill: var(--siren-gunship);
    fill-rule: evenodd;
}

.siren-wheel {
    transform-box: fill-box;
    transform-origin: center center;
    animation: wheelForward 1.6s linear infinite;
}

@keyframes wheelForward {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes wheelBackward {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

body.timeline-paused .siren-wheel,
#siren-chassis.chassis-parked .siren-wheel {
    animation-play-state: paused !important;
}

#siren-chassis.chassis-homing .siren-wheel {
    animation: wheelBackward 0.6s linear infinite !important;
}

.radar-emitter {
    position: absolute;
    top: 6.8px;
    left: 37.6px;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 1215;
}

.radar-arc {
    position: absolute;
    top: 0;
    left: 0;
    border: 2px solid var(--siren-gunship);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    clip-path: polygon(50% 50%, 100% 20%, 100% 80%);
    opacity: 0;
    animation: lidarScanPropagate 1.6s cubic-bezier(0.1, 0.6, 0.3, 1) infinite;
}

.radar-arc.arc-1 {
    animation-delay: 0s;
}

.radar-arc.arc-2 {
    animation-delay: 0.8s;
}

@keyframes lidarScanPropagate {
    0% { width: 6px; height: 6px; opacity: 1.0; }
    50% { opacity: 0.75; }
    100% { width: 54px; height: 54px; opacity: 0; }
}

body.timeline-paused .radar-arc {
    animation-play-state: paused !important;
    opacity: 0.6 !important;
}

#siren-chassis.chassis-parked .radar-emitter,
#siren-chassis.chassis-homing .radar-emitter,
#siren-chassis.chassis-sleeping .radar-emitter {
    display: none !important;
}

#station-hotspots {
    position: absolute;
    bottom: -18px;
    left: var(--pad-x);
    right: var(--pad-x);
    height: 36px;
    display: flex;
    pointer-events: auto;
}

.station-slot {
    position: relative;
    flex: 1;
    height: 100%;
    cursor: pointer;
}

.station-slot.locked-slot {
    cursor: default;
}

.slot-tip {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translate(-50%, 0);
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11px;
    font-weight: 600;
    color: #141418;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.station-slot:hover .slot-tip {
    opacity: 1;
    transform: translate(-50%, -2px);
}

.station-slot.locked-slot .slot-tip {
    color: #8A8A93;
}

/* ========================================================
   [4] 底部底栏
   ======================================================== */
#global-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: var(--footer-h);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--pad-x);
    border-top: 1px solid var(--line-subtle);
    font-family: "SF Mono", Consolas, monospace;
    font-size: 11px;
    color: rgba(0, 0, 0, 0.45);
    letter-spacing: 0.06em;
    opacity: 0;
    transition: opacity 1.0s ease;
    z-index: 1000;
}

#global-footer.show {
    opacity: 1;
}

.copyable-text {
    user-select: text;
    cursor: text;
}