/* 拆分说明：本文件由原 HTML 的 <style> 样式块拆分而来；中文注释保留，便于后续维护。 */
/* 路径说明：CSS 位于 css 子文件夹，引用根目录 1.jpg 时使用 ../../shared/background.jpg。 */
:root {
            --bg: #F5F5F3;
            --text: #111111;
            --secondary: #666666;
            --muted: rgba(17, 17, 17, 0.52);
            --accent: #E8FF2A;
            --accent-cyan: #00F0FF;
            --accent-red: #FF2A2A;
            --white: #FFFFFF;
            --black: #000000;
            --border: rgba(17, 17, 17, 0.12);
            --glass: rgba(255, 255, 255, 0.44);
            --glass-strong: rgba(255, 255, 255, 0.68);
            --font-main: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
            --font-cn: 'Noto Sans SC', sans-serif;
            --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
            --ease-circ: cubic-bezier(0.85, 0, 0.15, 1);
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            overflow-x: hidden;
            background-image: url('../../shared/background.jpg');
            background-size: cover;
            background-position: center center;
            /* V6 性能说明：详情页不再使用 fixed 背景，避免滚动时触发大面积重绘。 */
            background-attachment: scroll;
            background-color: #d6cec4;
        }

        body {
            font-family: var(--font-main);
            background: transparent;
            color: var(--text);
            cursor: none;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body.native-cursor {
            cursor: auto;
        }

        /* 性能版说明：关闭自定义光标时，恢复链接和按钮的系统光标，避免 static 档出现“看不见鼠标”的交互问题。 */
        body.native-cursor a,
        body.native-cursor button {
            cursor: pointer;
        }

        body.native-cursor .cursor-dot,
        body.native-cursor .cursor-ring {
            display: none;
        }

        img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        button {
            cursor: none;
            border: none;
            background: none;
            font-family: inherit;
        }

        ul {
            list-style: none;
        }

        #three-canvas {
            position: fixed;
            inset: 0;
            z-index: -3;
            pointer-events: none;
        }

        #liquid-glass {
            position: fixed;
            inset: 0;
            z-index: -2;
            pointer-events: none;
            overflow: hidden;
            isolation: isolate;
        }

        .glass-image-base {
            position: absolute;
            inset: -2%;
            z-index: 0;
            background-image: url('../../shared/background.jpg');
            background-size: cover;
            background-position: center center;
            opacity: 0.56;
            filter: saturate(0.92) contrast(0.96) brightness(1.08);
            transform: scale(1.02);
        }

        .glass-frosted-base {
            position: absolute;
            inset: 0;
            z-index: 1;
            background:
                linear-gradient(115deg, rgba(255,255,255,0.74) 0%, rgba(245,247,246,0.58) 48%, rgba(236,239,235,0.66) 100%),
                radial-gradient(circle at 18% 18%, rgba(255,255,255,0.38), transparent 34%),
                radial-gradient(circle at 78% 36%, rgba(210,255,244,0.18), transparent 42%);
            backdrop-filter: blur(11px) saturate(1.12) contrast(1.02);
            -webkit-backdrop-filter: blur(11px) saturate(1.12) contrast(1.02);
        }

        .glass-frosted-base::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(255,255,255,0.40), transparent 34%, rgba(255,255,255,0.18) 72%, transparent),
                linear-gradient(180deg, rgba(255,255,255,0.34), transparent 28%, rgba(0,0,0,0.045) 100%);
            opacity: 0.62;
        }

        .glass-frosted-base::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, transparent 48%, rgba(255,255,255,0.22) 100%);
            opacity: 0.72;
        }

        .glass-blob {
            position: absolute;
            z-index: 2;
            border-radius: 999px;
            pointer-events: none;
            will-change: transform, opacity;
            filter: blur(26px);
            opacity: 0.42;
            animation: glassBlobFloat 38s ease-in-out infinite alternate;
        }

        .blob-1 {
            width: 38vw;
            height: 32vw;
            top: 8%;
            left: -6%;
            background: radial-gradient(ellipse at 40% 40%, rgba(255,255,255,0.42) 0%, rgba(208,255,244,0.16) 58%, transparent 80%);
        }

        .blob-2 {
            width: 34vw;
            height: 36vw;
            top: 24%;
            right: -7%;
            background: radial-gradient(ellipse at 60% 50%, rgba(255,255,255,0.36) 0%, rgba(225,232,255,0.15) 58%, transparent 80%);
            animation-duration: 44s;
            animation-delay: -12s;
        }

        .blob-3 {
            width: 36vw;
            height: 24vw;
            bottom: 3%;
            left: 28%;
            background: radial-gradient(ellipse at 50% 55%, rgba(255,255,255,0.34) 0%, rgba(246,255,210,0.13) 58%, transparent 80%);
            animation-duration: 52s;
            animation-delay: -22s;
        }

        @keyframes glassBlobFloat {
            0% { transform: translate3d(0, 0, 0) scale(1); opacity: 0.34; }
            100% { transform: translate3d(4%, -3%, 0) scale(1.05); opacity: 0.48; }
        }

        .glass-grid {
            position: absolute;
            inset: 0;
            z-index: 3;
            opacity: 0.28;
            background-image:
                linear-gradient(rgba(255,255,255,0.16) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.16) 1px, transparent 1px),
                linear-gradient(rgba(0,0,0,0.035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0,0,0,0.035) 1px, transparent 1px);
            background-size: 72px 72px, 72px 72px, 24px 24px, 24px 24px;
            mask-image: linear-gradient(90deg, rgba(0,0,0,0.25), rgba(0,0,0,0.82) 42%, rgba(0,0,0,0.55));
            -webkit-mask-image: linear-gradient(90deg, rgba(0,0,0,0.25), rgba(0,0,0,0.82) 42%, rgba(0,0,0,0.55));
        }

        #dense-lines {
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background: repeating-linear-gradient(
                90deg,
                rgba(0, 240, 255, 0.03) 0px,
                rgba(0, 240, 255, 0.03) 1px,
                transparent 1px,
                transparent 5px
            );
            opacity: 0.4;
            mix-blend-mode: screen;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            z-index: 9999;
            pointer-events: none;
            opacity: 0.028;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
            background-size: 256px 256px;
        }

        @keyframes slideUp {
            to { transform: translateY(0); }
        }

        @keyframes fadeIn {
            to { opacity: 1; }
        }

        .cursor-dot {
            position: fixed;
            left: 0;
            top: 0;
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            pointer-events: none;
            z-index: 9998;
            transform: translate3d(-100px, -100px, 0) translate(-50%, -50%);
            will-change: transform;
            transition: width 0.2s, height 0.2s, opacity 0.2s, box-shadow 0.2s;
            box-shadow: 0 0 8px var(--accent), 0 0 16px rgba(232,255,42,0.5);
            mix-blend-mode: screen;
        }

        .cursor-ring {
            position: fixed;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            border: 2.5px solid var(--accent);
            border-radius: 50%;
            pointer-events: none;
            z-index: 9997;
            transform: translate3d(-100px, -100px, 0) translate(-50%, -50%);
            will-change: transform;
            transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out), border-color 0.3s, box-shadow 0.3s;
            box-shadow: 0 0 12px rgba(232,255,42,0.4), inset 0 0 8px rgba(255,255,255,0.2);
        }

        .cursor-ring.hover {
            width: 70px;
            height: 70px;
            border-color: var(--white);
            animation: rainbowPulse 2s ease-in-out infinite;
        }

        .cursor-ring.click {
            width: 24px;
            height: 24px;
            border-color: var(--white);
            box-shadow: 0 0 15px var(--accent), inset 0 0 6px rgba(255,255,255,0.4);
        }

        .cursor-dot.hover-active {
            width: 14px;
            height: 14px;
        }

        @keyframes rainbowPulse {
            0%, 100% { box-shadow: 0 0 20px var(--accent-cyan), 0 0 30px var(--accent), 0 0 40px var(--accent-red); }
            50% { box-shadow: 0 0 30px var(--accent-red), 0 0 40px var(--accent), 0 0 50px var(--accent-cyan); }
        }

        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            z-index: 999;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent), var(--accent-red));
            /* 性能版说明：JS 通过 scaleX 更新进度，避免滚动时修改 width 触发布局。 */
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.1s linear;
        }

        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 500;
            padding: 28px 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: padding 0.4s var(--ease-out), background 0.4s, border-color 0.4s;
        }

        nav.scrolled {
            padding: 18px 60px;
            background: rgba(245,245,243,0.85);
            backdrop-filter: blur(25px);
            -webkit-backdrop-filter: blur(25px);
            border-bottom: 1px solid var(--border);
        }

        .nav-logo {
            font-size: 16px;
            font-weight: 700;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-logo-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--secondary);
            position: relative;
            transition: color 0.3s;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--text);
            transition: width 0.3s var(--ease-out);
        }

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

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta {
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 10px 24px;
            border: 1.5px solid var(--text);
            transition: background 0.3s, color 0.3s;
        }

        .nav-cta:hover {
            background: var(--text);
            color: var(--bg);
        }

        section {
            position: relative;
        }

        .section-label {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 1px;
            background: var(--secondary);
            display: block;
        }

        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
        }

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

        .stagger-1 { transition-delay: 0.1s; }
        .stagger-2 { transition-delay: 0.2s; }
        .stagger-3 { transition-delay: 0.3s; }
        .stagger-4 { transition-delay: 0.4s; }

        #hero {
            min-height: 100vh;
            padding: 120px 60px 0;
            display: grid;
            grid-template-rows: 1fr auto;
            overflow: hidden;
            position: relative;
        }

        #hero-lines-stage,
        #hero-poly-stage {
            position: absolute;
            top: 0;
            height: 100%;
            overflow: hidden;
        }

        #hero-lines-stage {
            inset: 0;
            width: 100%;
            z-index: 1;
            pointer-events: none;
        }

        #hero-poly-stage {
            right: 0;
            width: 54%;
            z-index: 3;
            pointer-events: auto;
        }

        #hero-poly-stage::after {
            content: '';
            position: absolute;
            top: 15%;
            left: 15%;
            width: 75%;
            height: 70%;
            background: radial-gradient(ellipse at 60% 45%, rgba(0,240,255,0.07) 0%, rgba(255,42,140,0.05) 35%, rgba(155,42,255,0.04) 60%, transparent 80%);
            filter: blur(30px);
            z-index: 1;
            pointer-events: none;
            animation: stageGlow 8s ease-in-out infinite;
        }

        @keyframes stageGlow {
            0%, 100% { opacity: 0.6; transform: scale(1) translate(0, 0); }
            33% { opacity: 1; transform: scale(1.05) translate(2%, -2%); }
            66% { opacity: 0.8; transform: scale(0.95) translate(-2%, 3%); }
        }

        #hero-lines-canvas,
        #hero-poly-canvas {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            display: block;
        }

        #hero-lines-canvas {
            z-index: 1;
        }

        #hero-poly-canvas {
            z-index: 3;
            touch-action: none;
        }

        .poly-labels {
            position: absolute;
            bottom: 60px;
            left: 30px;
            right: 20px;
            z-index: 5;
            pointer-events: none;
            display: flex;
            justify-content: space-around;
        }

        .poly-label-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            opacity: 0.6;
            transition: opacity 0.3s;
        }

        .poly-label-item.active {
            opacity: 1;
        }

        .poly-label-cn {
            font-family: var(--font-cn);
            font-size: 11px;
            letter-spacing: 0.12em;
            color: rgba(255,255,255,0.85);
            text-shadow: 0 0 8px rgba(0,0,0,0.8);
        }

        .poly-label-en {
            font-size: 9px;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: rgba(255,255,255,0.45);
            text-shadow: 0 0 6px rgba(0,0,0,0.8);
        }

        .stage-hint {
            position: absolute;
            top: 24px;
            right: 24px;
            z-index: 5;
            pointer-events: none;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 10px;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: rgba(255,255,255,0.3);
        }

        .stage-hint-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            animation: hintPulse 2s ease-in-out infinite;
        }

        @keyframes hintPulse {
            0%, 100% { opacity: 0.4; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.4); }
        }

        .hero-content {
            position: relative;
            z-index: 5;
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            column-gap: 20px;
            align-items: end;
            padding-bottom: 80px;
            pointer-events: none;
        }

        .hero-main {
            grid-column: 1 / 10;
            align-self: center;
        }

        .hero-tag {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--secondary);
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .hero-tag::before {
            content: '';
            width: 20px;
            height: 1px;
            background: var(--secondary);
        }

        .hero-title {
            font-size: clamp(58px, 9vw, 132px);
            font-weight: 700;
            letter-spacing: -0.04em;
            line-height: 0.92;
            color: var(--text);
            max-width: 980px;
        }

        .hero-title .line {
            display: block;
            overflow: hidden;
        }

        .hero-title .line span {
            display: block;
            transform: translateY(110%);
            animation: slideUp 1s var(--ease-out) forwards;
        }

        .hero-title .line:nth-child(1) span { animation-delay: 0.8s; }
        .hero-title .line:nth-child(2) span { animation-delay: 0.95s; }
        .hero-title .line:nth-child(3) span { animation-delay: 1.1s; }
        .hero-title .line:nth-child(4) span { animation-delay: 1.25s; }

        .accent-stroke {
            -webkit-text-stroke: 1.5px var(--text);
            color: transparent;
        }

        .hero-side {
            grid-column: 10 / 13;
            align-self: end;
            padding-bottom: 8px;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--secondary);
            margin-bottom: 24px;
            max-width: 300px;
        }

        .hero-cn {
            font-family: var(--font-cn);
            font-size: 15px;
            line-height: 2;
            color: rgba(17,17,17,0.62);
            margin-bottom: 32px;
        }

        .hero-stats {
            display: flex;
            flex-direction: column;
            gap: 20px;
            border-top: 1px solid var(--border);
            padding-top: 24px;
        }

        .stat-item {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 18px;
        }

        .stat-num {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1;
            white-space: nowrap;
        }

        .stat-label {
            font-size: 14px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--secondary);
            text-align: right;
        }

        .hero-bottom {
            position: relative;
            z-index: 5;
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .hero-scroll-hint {
            font-size: 14px;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 12px;
            animation: bounce 2s ease-in-out infinite 2s;
        }

        .hero-scroll-arrow {
            width: 24px;
            height: 24px;
            border: 1px solid var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        .hero-location {
            font-size: 14px;
            color: var(--secondary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
        }

        .marquee-section {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            overflow: hidden;
            padding: 18px 0;
            background: var(--text);
        }

        .marquee-track {
            display: flex;
            gap: 60px;
            animation: marquee 30s linear infinite;
            white-space: nowrap;
            width: max-content;
        }

        @keyframes marquee {
            from { transform: translateX(0); }
            to { transform: translateX(-50%); }
        }

        .marquee-item {
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--white);
            display: flex;
            align-items: center;
            gap: 60px;
            flex-shrink: 0;
        }

        .marquee-item .dot {
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }

        #overview {
            padding: 150px 60px 120px;
        }

        .overview-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            column-gap: 20px;
        }

        .overview-kicker {
            grid-column: 1 / 3;
            padding-top: 8px;
        }

        .overview-main {
            grid-column: 3 / 9;
        }

        .overview-side {
            grid-column: 10 / 13;
        }

        .overview-headline {
            font-size: clamp(32px, 4vw, 56px);
            font-weight: 500;
            letter-spacing: -0.03em;
            line-height: 1.22;
            margin-bottom: 34px;
        }

        .overview-headline .highlight {
            background: var(--accent);
            padding: 0 6px;
        }

        .overview-copy {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
        }

        .overview-copy p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--secondary);
        }

        .overview-copy p.cn {
            font-family: var(--font-cn);
            line-height: 2.05;
        }

        .meta-panel {
            background: rgba(255,255,255,0.42);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.42);
            border-radius: 8px;
            padding: 28px;
            position: sticky;
            top: 110px;
            overflow: hidden;
        }

        .meta-panel::before,
        .gallery-card::before,
        .process-card::before,
        .next-panel::before {
            content: '';
            position: absolute;
            inset: -2px;
            background: linear-gradient(45deg, var(--accent-cyan), var(--accent), var(--accent-red));
            opacity: 0;
            z-index: -1;
            filter: blur(12px);
            transition: opacity 0.4s var(--ease-out);
            border-radius: 8px;
        }

        .meta-panel:hover::before,
        .gallery-card:hover::before,
        .process-card:hover::before,
        .next-panel:hover::before {
            opacity: 0.45;
        }

        .meta-row {
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }

        .meta-row:first-child {
            padding-top: 0;
        }

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

        .meta-label {
            display: block;
            font-size: 12px;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .meta-value {
            display: block;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.35;
        }

        .tool-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 6px;
        }

        .tool-chip {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            padding: 7px 10px;
            border: 1px solid var(--border);
            border-radius: 4px;
            background: rgba(255,255,255,0.35);
        }

        #gallery {
            padding: 120px 60px 80px;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 60px;
        }

        .section-title {
            font-size: clamp(42px, 6vw, 84px);
            font-weight: 700;
            letter-spacing: -0.04em;
            line-height: 0.98;
        }

        .section-note {
            max-width: 360px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--secondary);
        }

        .featured-image {
            position: relative;
            min-height: 68vh;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.36);
            background: rgba(20,20,20,0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            margin-bottom: 60px;
        }

        .placeholder-art {
            position: relative;
            width: 100%;
            height: 100%;
            min-height: inherit;
            overflow: hidden;
            background:
                linear-gradient(135deg, rgba(10,10,10,0.98), rgba(28,28,28,0.96)),
                radial-gradient(circle at 18% 22%, rgba(0,240,255,0.18), transparent 32%),
                radial-gradient(circle at 80% 72%, rgba(232,255,42,0.16), transparent 28%);
        }

        .placeholder-art::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px),
                linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px);
            background-size: 64px 64px;
            opacity: 0.34;
        }

        .placeholder-art::after {
            content: '';
            position: absolute;
            inset: 9%;
            border: 1px solid rgba(255,255,255,0.22);
            box-shadow:
                inset 0 0 0 1px rgba(232,255,42,0.12),
                0 0 40px rgba(0,240,255,0.10);
        }

        .placeholder-word {
            position: absolute;
            left: 7%;
            bottom: 8%;
            max-width: 72%;
            color: var(--white);
            z-index: 2;
        }

        .placeholder-word .num {
            display: block;
            font-size: 14px;
            letter-spacing: 0.2em;
            color: rgba(255,255,255,0.42);
            margin-bottom: 18px;
        }

        .placeholder-word .title {
            display: block;
            font-size: clamp(50px, 10vw, 150px);
            font-weight: 900;
            letter-spacing: -0.06em;
            line-height: 0.8;
        }

        .placeholder-word .caption {
            display: block;
            margin-top: 18px;
            font-size: 14px;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--accent);
        }

        .featured-caption {
            position: absolute;
            top: 24px;
            right: 24px;
            z-index: 4;
            padding: 10px 14px;
            border-radius: 4px;
            background: rgba(245,245,243,0.90);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 60px;
        }

        .gallery-card {
            position: relative;
            min-height: 420px;
            border-radius: 8px;
            overflow: hidden;
            background: rgba(20,20,20,0.5);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.12);
        }

        .gallery-card.large {
            grid-column: span 7;
            min-height: 520px;
        }

        .gallery-card.medium {
            grid-column: span 5;
        }

        .gallery-card.wide {
            grid-column: span 12;
            min-height: 460px;
        }

        .gallery-card.small {
            grid-column: span 4;
        }

        .gallery-card .placeholder-art {
            min-height: 100%;
            transition: transform 0.8s var(--ease-out);
        }

        .gallery-card:hover .placeholder-art {
            transform: scale(1.04);
        }

        .gallery-caption {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 24px;
            z-index: 5;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            align-items: flex-end;
            color: var(--white);
        }

        .gallery-caption h3 {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 8px;
        }

        .gallery-caption p {
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent);
        }

        .gallery-index {
            font-size: 13px;
            letter-spacing: 0.16em;
            color: rgba(255,255,255,0.54);
            white-space: nowrap;
        }

        .tone-cyan {
            background:
                linear-gradient(135deg, #101014, #1b1d22),
                radial-gradient(circle at 20% 22%, rgba(0,240,255,0.22), transparent 34%),
                radial-gradient(circle at 70% 80%, rgba(232,255,42,0.14), transparent 26%);
        }

        .tone-yellow {
            background:
                linear-gradient(135deg, #181812, #28291a),
                radial-gradient(circle at 22% 70%, rgba(232,255,42,0.22), transparent 32%),
                radial-gradient(circle at 82% 26%, rgba(255,42,42,0.12), transparent 28%);
        }

        .tone-red {
            background:
                linear-gradient(135deg, #140f12, #24191c),
                radial-gradient(circle at 28% 28%, rgba(255,42,42,0.20), transparent 32%),
                radial-gradient(circle at 80% 80%, rgba(0,240,255,0.12), transparent 28%);
        }

        .tone-light {
            background:
                linear-gradient(135deg, #f2f0ea, #d8d3c8),
                radial-gradient(circle at 20% 24%, rgba(255,255,255,0.54), transparent 34%),
                radial-gradient(circle at 78% 72%, rgba(232,255,42,0.20), transparent 30%);
        }

        .tone-light .placeholder-word {
            color: var(--text);
        }

        .tone-light .placeholder-word .num {
            color: rgba(17,17,17,0.44);
        }

        .tone-light .placeholder-word .caption {
            color: var(--secondary);
        }

        #process {
            padding: 130px 60px;
            background: var(--text);
            color: var(--white);
        }

        #process .section-label,
        #process .section-note {
            color: rgba(255,255,255,0.55);
        }

        #process .section-label::before {
            background: rgba(255,255,255,0.55);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-top: 60px;
        }

        .process-card {
            position: relative;
            min-height: 360px;
            padding: 34px;
            border-radius: 8px;
            background: rgba(26,26,26,0.62);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border: 1px solid rgba(255,255,255,0.08);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .process-num {
            font-size: 14px;
            letter-spacing: 0.18em;
            color: rgba(255,255,255,0.42);
        }

        .process-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1.05;
            margin-bottom: 16px;
        }

        .process-card p {
            font-size: 15px;
            line-height: 1.75;
            color: rgba(255,255,255,0.58);
        }

        .process-mark {
            position: absolute;
            right: 24px;
            top: 20px;
            font-size: 80px;
            font-weight: 900;
            letter-spacing: -0.08em;
            color: rgba(255,255,255,0.035);
            pointer-events: none;
        }

        #back {
            padding: 120px 60px 80px;
        }

        .next-panel {
            position: relative;
            min-height: 360px;
            border-radius: 8px;
            padding: 46px;
            background: rgba(255,255,255,0.46);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255,255,255,0.42);
            overflow: hidden;
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            column-gap: 20px;
            align-items: end;
        }

        .next-panel::after {
            content: 'NEXT';
            position: absolute;
            right: -2vw;
            top: 10px;
            font-size: clamp(120px, 20vw, 280px);
            font-weight: 900;
            letter-spacing: -0.08em;
            color: rgba(17,17,17,0.035);
            pointer-events: none;
        }

        .next-copy {
            grid-column: 1 / 7;
            position: relative;
            z-index: 2;
        }

        .next-copy h2 {
            font-size: clamp(42px, 6vw, 86px);
            font-weight: 700;
            line-height: 0.96;
            letter-spacing: -0.05em;
            margin-top: 24px;
        }

        .next-actions {
            grid-column: 8 / 13;
            position: relative;
            z-index: 2;
            display: flex;
            align-items: flex-end;
            justify-content: flex-end;
            gap: 16px;
            flex-wrap: wrap;
        }

        .action-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            min-height: 48px;
            padding: 0 22px;
            border: 1.5px solid var(--text);
            border-radius: 4px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            transition: background 0.3s, color 0.3s, gap 0.3s;
        }

        .action-link.primary {
            background: var(--text);
            color: var(--bg);
        }

        .action-link:hover {
            gap: 15px;
        }

        footer {
            padding: 32px 60px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(245,245,243,0.66);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .footer-logo {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .footer-copy,
        .footer-right a {
            font-size: 13px;
            color: var(--secondary);
            letter-spacing: 0.04em;
        }

        .footer-right {
            display: flex;
            gap: 24px;
        }

        /* V2 单图片详情页补充样式：
           下面这些规则只服务于 project-detail-v2.html 的新结构。
           原 index.html 中的大量 gallery/process/hero CSS 会被保留，
           但 V2 页面不再使用对应 HTML，以便后续需要时仍可参考和回退。 */
        /* V3 说明：本文件复制自 V2；以下覆盖样式继续沿用 V2 基础，并追加紧凑间距与多图浏览器规则。 */
        #overview {
            /* V3 间距说明：overview 不再承担大首屏功能，只作为项目标题/计划区。
               这里去掉 V2 的 min-height，让 gallery 紧跟其后，形成同一段项目叙事。 */
            padding: 132px 60px 44px;
            display: flex;
            align-items: center;
        }

        #gallery {
            /* V3 间距说明：gallery 顶部压缩到 28px，避免 overview 和 gallery 像两个断开的模块。 */
            padding-top: 28px;
            padding-bottom: 130px;
        }

        .single-work-layout {
            display: grid;
            grid-template-columns: minmax(0, 7fr) minmax(320px, 5fr);
            gap: 60px;
            align-items: stretch;
        }

        .single-image-panel,
        .single-copy-panel {
            position: relative;
            border-radius: 8px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.46);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.42);
        }

        .single-image-panel {
            min-height: 72vh;
            background: rgba(20, 20, 20, 0.5);
        }

        .single-copy-panel {
            padding: 42px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 36px;
        }

        .single-image-panel::before,
        .single-copy-panel::before {
            content: '';
            position: absolute;
            inset: -2px;
            background: linear-gradient(45deg, var(--accent-cyan), var(--accent), var(--accent-red));
            opacity: 0;
            z-index: -1;
            filter: blur(12px);
            transition: opacity 0.4s var(--ease-out);
            border-radius: 8px;
        }

        .single-image-panel:hover::before,
        .single-copy-panel:hover::before {
            opacity: 0.42;
        }

        .single-image-frame {
            width: 100%;
            height: 100%;
            min-height: inherit;
            position: relative;
        }

        .single-image-frame .placeholder-art {
            min-height: inherit;
        }

        .single-image-real {
            position: absolute;
            inset: 0;
            z-index: 4;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity 0.6s var(--ease-out);
        }

        .single-image-frame.has-real-image .single-image-real {
            opacity: 1;
        }

        .single-image-frame.has-real-image .placeholder-art {
            opacity: 0;
        }

        .single-image-caption {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 24px;
            z-index: 6;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 24px;
            color: var(--white);
        }

        .single-image-caption h3 {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .single-image-caption p {
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent);
        }

        .single-copy-eyebrow {
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .single-copy-title {
            font-size: clamp(34px, 4.2vw, 62px);
            font-weight: 700;
            letter-spacing: -0.045em;
            line-height: 0.98;
            margin-bottom: 24px;
        }

        .single-copy-lead,
        .single-copy-cn,
        .single-copy-goal {
            font-size: 16px;
            line-height: 1.85;
            color: var(--secondary);
        }

        .single-copy-cn {
            font-family: var(--font-cn);
            line-height: 2;
            color: rgba(17, 17, 17, 0.62);
        }

        .single-copy-block {
            padding-top: 26px;
            border-top: 1px solid var(--border);
        }

        .single-copy-block h3 {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .single-meta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-top: 28px;
        }

        .single-meta-card {
            padding: 16px;
            border: 1px solid var(--border);
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.38);
        }

        .single-meta-label {
            display: block;
            font-size: 11px;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .single-meta-value {
            display: block;
            font-size: 15px;
            font-weight: 700;
            line-height: 1.35;
        }

        /* V3 多图浏览器：
           这组样式只增强 single-image-panel 内部的 article。
           页面仍然只展示一个项目，不恢复多张 gallery-card 的瀑布流。 */
        .single-image-panel {
            user-select: none;
        }

        .single-image-frame {
            cursor: grab;
            touch-action: pan-y;
        }

        .single-image-frame.is-dragging {
            cursor: grabbing;
        }

        .gallery-control-row {
            position: absolute;
            top: 24px;
            left: 24px;
            right: 24px;
            z-index: 7;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            pointer-events: none;
        }

        .gallery-counter {
            padding: 9px 12px;
            border-radius: 4px;
            background: rgba(245, 245, 243, 0.9);
            color: var(--text);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            pointer-events: auto;
        }

        .gallery-buttons {
            display: flex;
            gap: 10px;
            pointer-events: auto;
        }

        .gallery-nav-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.5);
            background: rgba(17, 17, 17, 0.42);
            color: var(--white);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            line-height: 1;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: transform 0.25s var(--ease-out), background 0.25s, border-color 0.25s;
        }

        .gallery-nav-btn:hover {
            transform: scale(1.08);
            background: rgba(17, 17, 17, 0.72);
            border-color: var(--accent);
        }

        .gallery-thumb-track {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 112px;
            z-index: 7;
            display: flex;
            gap: 10px;
            overflow-x: auto;
            padding-bottom: 2px;
            scrollbar-width: thin;
        }

        .gallery-thumb {
            width: 72px;
            height: 48px;
            flex: 0 0 auto;
            border-radius: 4px;
            border: 1px solid rgba(255, 255, 255, 0.34);
            overflow: hidden;
            position: relative;
            background: rgba(17, 17, 17, 0.6);
            opacity: 0.62;
            transition: opacity 0.25s, transform 0.25s var(--ease-out), border-color 0.25s;
        }

        .gallery-thumb:hover,
        .gallery-thumb.active {
            opacity: 1;
            transform: translateY(-2px);
            border-color: var(--accent);
        }

        .gallery-thumb .placeholder-art {
            min-height: 48px;
            transform: scale(1.8);
            transform-origin: center;
        }

        .gallery-thumb-label {
            position: absolute;
            inset: auto 6px 5px auto;
            color: var(--white);
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-shadow: 0 0 8px rgba(0,0,0,0.8);
        }

        /* V4 画面浏览器覆盖样式：
           旧的 V3/CSS 继续保留作为历史参考，这里只在现有 single-image-panel 上叠加新的展示逻辑。
           目标是让主图切换有“滑动淡入”的舞台感，同时让缩略图和说明文字不再直接压在作品画面上。 */
        .single-image-frame {
            overflow: hidden;
            background: rgba(4, 4, 4, 0.32);
        }

        /* V4 主图动画层：
           JS 每次切换都会创建一个 gallery-slide-layer，新图从左/右侧轻微位移进入，
           旧图同步淡出，避免原来直接替换 innerHTML 的生硬跳变。 */
        .gallery-slide-layer {
            position: absolute;
            inset: 0;
            z-index: 1;
            min-height: inherit;
            opacity: 0;
            transform: translate3d(0, 0, 0) scale(1.012);
            transition:
                opacity 0.58s var(--ease-out),
                transform 0.58s var(--ease-out);
            will-change: opacity, transform;
            pointer-events: none;
        }

        .gallery-slide-layer.is-current {
            z-index: 3;
            opacity: 1;
            transform: translate3d(0, 0, 0) scale(1);
        }

        .gallery-slide-layer .placeholder-art {
            width: 100%;
            height: 100%;
            min-height: inherit;
            transition: opacity 0.35s var(--ease-out);
        }

        .gallery-slide-layer.has-real-image .single-image-real {
            opacity: 1;
        }

        .gallery-slide-layer.has-real-image .placeholder-art {
            opacity: 0;
        }

        .gallery-slide-enter-left {
            z-index: 4;
            opacity: 0;
            transform: translate3d(-46px, 0, 0) scale(1.018);
        }

        .gallery-slide-enter-right {
            z-index: 4;
            opacity: 0;
            transform: translate3d(46px, 0, 0) scale(1.018);
        }

        .gallery-slide-active {
            opacity: 1;
            transform: translate3d(0, 0, 0) scale(1);
        }

        .gallery-slide-exit-left {
            opacity: 0;
            transform: translate3d(-34px, 0, 0) scale(0.996);
        }

        .gallery-slide-exit-right {
            opacity: 0;
            transform: translate3d(34px, 0, 0) scale(0.996);
        }

        /* V4 缩略图玻璃外壳：
           缩略图仍保留在图片内部，但先放进半透明背景层，避免小图和作品主体互相混在一起。 */
        .gallery-thumb-shell {
            position: absolute;
            left: 24px;
            right: 24px;
            bottom: 116px;
            z-index: 7;
            padding: 8px;
            border-radius: 8px;
            overflow: hidden;
            background: rgba(8, 8, 8, 0.52);
            border: 1px solid rgba(255, 255, 255, 0.22);
            box-shadow: 0 18px 44px rgba(0, 0, 0, 0.26);
            backdrop-filter: blur(18px) saturate(1.18);
            -webkit-backdrop-filter: blur(18px) saturate(1.18);
        }

        .gallery-thumb-shell::before,
        .gallery-thumb-shell::after {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            width: 34px;
            z-index: 2;
            pointer-events: none;
        }

        .gallery-thumb-shell::before {
            left: 0;
            background: linear-gradient(90deg, rgba(8, 8, 8, 0.74), rgba(8, 8, 8, 0));
        }

        .gallery-thumb-shell::after {
            right: 0;
            background: linear-gradient(270deg, rgba(8, 8, 8, 0.74), rgba(8, 8, 8, 0));
        }

        .gallery-thumb-shell .gallery-thumb-track {
            position: relative;
            left: auto;
            right: auto;
            bottom: auto;
            z-index: 1;
            padding: 1px 2px 3px;
            max-width: 100%;
        }

        .gallery-thumb-shell .gallery-thumb {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.3);
            box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.18);
        }

        /* V4 说明文案玻璃层：
           标题、说明和页码不再裸露覆盖在图像上，而是进入 single-caption-panel，
           这样作品内容、缩略图、说明文字之间的层级会更清楚。 */
        .single-image-caption {
            pointer-events: none;
        }

        .single-caption-panel {
            width: 100%;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 22px;
            padding: 16px 18px;
            border-radius: 8px;
            background: rgba(8, 8, 8, 0.58);
            border: 1px solid rgba(255, 255, 255, 0.24);
            box-shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
            backdrop-filter: blur(18px) saturate(1.16);
            -webkit-backdrop-filter: blur(18px) saturate(1.16);
        }

        .single-caption-panel > div:first-child {
            min-width: 0;
        }

        .single-caption-panel h3 {
            color: var(--white);
            text-shadow: 0 10px 28px rgba(0, 0, 0, 0.36);
        }

        .single-caption-panel p {
            max-width: 720px;
            color: var(--accent);
            text-shadow: 0 8px 22px rgba(0, 0, 0, 0.45);
        }

        .single-caption-panel .gallery-index {
            flex: 0 0 auto;
            color: rgba(255, 255, 255, 0.86);
        }

        @media (max-width: 760px) {
            .gallery-thumb-shell {
                left: 18px;
                right: 18px;
                bottom: 148px;
                padding: 7px;
            }

            .single-caption-panel {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 14px;
            }

            .single-caption-panel p {
                font-size: 12px;
                line-height: 1.55;
            }
        }

        @media (max-width: 1100px) {
            nav {
                padding: 24px 32px;
            }

            nav.scrolled {
                padding: 16px 32px;
            }

            .nav-links {
                gap: 24px;
            }

            #overview,
            #gallery,
            #back {
                padding-left: 32px;
                padding-right: 32px;
            }

            .single-work-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .single-image-panel {
                min-height: 62vh;
            }

            .hero-content,
            .overview-grid {
                grid-template-columns: 1fr;
            }

            .hero-main,
            .hero-side,
            .overview-kicker,
            .overview-main,
            .overview-side {
                grid-column: 1;
            }

            .hero-side {
                max-width: 480px;
                padding-top: 42px;
                border-top: 1px solid var(--border);
            }

            #hero-poly-stage {
                width: 62%;
                opacity: 0.78;
            }

            .overview-kicker {
                margin-bottom: 28px;
            }

            .overview-side {
                margin-top: 50px;
            }

            .meta-panel {
                position: relative;
                top: auto;
            }

            .gallery-grid {
                gap: 32px;
            }

            .gallery-card.large,
            .gallery-card.medium,
            .gallery-card.wide,
            .gallery-card.small {
                grid-column: span 12;
            }

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

            .next-panel {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .next-copy,
            .next-actions {
                grid-column: 1;
            }

            .next-actions {
                justify-content: flex-start;
            }
        }

        @media (max-width: 760px) {
            body {
                cursor: auto;
            }

            a,
            button {
                cursor: pointer;
            }

            .cursor-dot,
            .cursor-ring {
                display: none;
            }

            nav {
                padding: 18px 20px;
            }

            nav.scrolled {
                padding: 14px 20px;
            }

            .nav-links {
                display: none;
            }

            .nav-cta {
                padding: 9px 16px;
                font-size: 12px;
            }

            #overview,
            #gallery,
            #back {
                padding-left: 20px;
                padding-right: 20px;
            }

            #overview {
                padding-top: 104px;
                padding-bottom: 32px;
            }

            #gallery {
                padding-top: 20px;
            }

            .single-image-panel {
                min-height: 56vh;
            }

            .single-copy-panel {
                padding: 28px;
            }

            .single-image-caption {
                align-items: flex-start;
                flex-direction: column;
                bottom: 22px;
            }

            .gallery-control-row {
                top: 18px;
                left: 18px;
                right: 18px;
            }

            .gallery-thumb-track {
                left: 18px;
                right: 18px;
                bottom: 132px;
            }

            .gallery-thumb {
                width: 62px;
                height: 42px;
            }

            .single-meta-grid {
                grid-template-columns: 1fr;
            }

            #process {
                padding-top: 90px;
                padding-bottom: 90px;
            }

            .hero-title {
                font-size: clamp(48px, 18vw, 86px);
            }

            .hero-tag,
            .hero-scroll-hint,
            .hero-location {
                font-size: 12px;
            }

            .hero-bottom {
                align-items: flex-start;
                gap: 20px;
                flex-direction: column;
            }

            #hero-poly-stage {
                width: 100%;
                opacity: 0.42;
            }

            .poly-labels,
            .stage-hint {
                display: none;
            }

            .overview-copy {
                grid-template-columns: 1fr;
            }

            .section-header {
                align-items: flex-start;
                flex-direction: column;
                gap: 22px;
                margin-bottom: 40px;
            }

            .featured-image {
                min-height: 56vh;
                margin-bottom: 32px;
            }

            .gallery-grid {
                gap: 24px;
            }

            .gallery-card,
            .gallery-card.large,
            .gallery-card.medium,
            .gallery-card.wide,
            .gallery-card.small {
                min-height: 360px;
            }

            .gallery-caption {
                align-items: flex-start;
                flex-direction: column-reverse;
            }

            .process-grid {
                gap: 24px;
                margin-top: 40px;
            }

            .process-card {
                min-height: 300px;
                padding: 28px;
            }

            .next-panel {
                min-height: 420px;
                padding: 30px;
            }

            .next-actions {
                align-items: stretch;
                flex-direction: column;
            }

            .action-link {
                justify-content: center;
            }

            footer {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
        }

        /* V5 下置信息区与大屏预览覆盖样式：
           旧 V4 样式仍然保留；这里的规则靠后声明，用来把缩略图、按钮、caption 从图片内部移到图片下方。
           这样主图区域只负责展示作品，不再被任何信息层遮挡。 */
        .single-image-panel {
            min-height: auto;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .single-image-frame {
            min-height: clamp(420px, 62vh, 760px);
            height: clamp(420px, 62vh, 760px);
            flex: 0 0 auto;
            cursor: zoom-in;
        }

        .single-image-frame.is-dragging {
            cursor: grabbing;
        }

        .single-gallery-info {
            position: relative;
            z-index: 8;
            display: flex;
            flex-direction: column;
            gap: 14px;
            padding: 18px;
            background: rgba(8, 8, 8, 0.56);
            border-top: 1px solid rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(18px) saturate(1.14);
            -webkit-backdrop-filter: blur(18px) saturate(1.14);
        }

        /* V5 位置说明：
           这些元素在 V4 中是 absolute 悬浮层；V5 统一改为静态流布局，
           视觉样式保持玻璃质感，但完全不再压住图片。 */
        .single-gallery-info .gallery-control-row,
        .single-gallery-info .gallery-thumb-shell,
        .single-gallery-info .single-image-caption {
            position: relative;
            inset: auto;
            left: auto;
            right: auto;
            top: auto;
            bottom: auto;
            z-index: 1;
        }

        .single-gallery-info .gallery-control-row {
            pointer-events: auto;
            display: flex;
        }

        .single-gallery-info .gallery-thumb-shell {
            width: 100%;
        }

        .single-gallery-info .single-image-caption {
            width: 100%;
            display: block;
            pointer-events: auto;
        }

        .single-gallery-info .single-caption-panel {
            width: 100%;
        }

        /* V5 大屏预览层：
           采用页面内 overlay，而不是浏览器原生 fullscreen API，便于保留同一套视觉语言和关闭按钮。 */
        .image-lightbox {
            position: fixed;
            inset: 0;
            z-index: 12000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: clamp(22px, 5vw, 74px);
            background: rgba(0, 0, 0, 0.78);
            backdrop-filter: blur(18px) saturate(1.12);
            -webkit-backdrop-filter: blur(18px) saturate(1.12);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.34s var(--ease-out);
        }

        .image-lightbox.is-open {
            opacity: 1;
            pointer-events: auto;
        }

        .image-lightbox-stage {
            position: relative;
            width: min(92vw, 1440px);
            height: min(84vh, 920px);
            border-radius: 8px;
            overflow: hidden;
            background: rgba(8, 8, 8, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.18);
            box-shadow: 0 30px 110px rgba(0, 0, 0, 0.55);
        }

        .image-lightbox-stage .placeholder-art {
            width: 100%;
            height: 100%;
            min-height: 100%;
        }

        .image-lightbox-real {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: contain;
            opacity: 0;
            transition: opacity 0.36s var(--ease-out);
        }

        .image-lightbox-stage.has-real-image .image-lightbox-real {
            opacity: 1;
        }

        .image-lightbox-stage.has-real-image .placeholder-art {
            opacity: 0;
        }

        .image-lightbox-close {
            position: absolute;
            top: 24px;
            right: 24px;
            z-index: 2;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.28);
            background: rgba(120, 120, 120, 0.58);
            color: var(--white);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            line-height: 1;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: transform 0.25s var(--ease-out), background 0.25s;
        }

        .image-lightbox-close:hover {
            transform: scale(1.08);
            background: rgba(150, 150, 150, 0.78);
        }

        body.lightbox-open {
            overflow: hidden;
        }

        @media (max-width: 760px) {
            .single-image-frame {
                min-height: 52vh;
                height: 52vh;
            }

            .single-gallery-info {
                padding: 14px;
                gap: 12px;
            }

            .single-gallery-info .gallery-control-row {
                align-items: flex-start;
                gap: 12px;
            }

            .image-lightbox {
                padding: 18px;
            }

            .image-lightbox-stage {
                width: 100%;
                height: 78vh;
            }

            .image-lightbox-close {
                top: 18px;
                right: 18px;
                width: 40px;
                height: 40px;
            }
        }

        /* V6 性能覆盖样式：
           JS 会根据设备能力给 body 加 performance-static 或 performance-balanced。
           static 档保留玻璃、网格、噪点的视觉层次，但关闭 WebGL 和大面积持续动画。 */
        body.performance-static #three-canvas {
            display: none;
        }

        body.performance-static #hero-poly-canvas {
            display: none;
        }

        body.performance-static .marquee-track {
            animation: none !important;
            will-change: auto !important;
        }

        body.performance-static .glass-blob,
        body.performance-reduced-motion .glass-blob {
            animation: none;
            will-change: auto;
            filter: blur(18px);
            opacity: 0.34;
        }

        body.performance-static .glass-frosted-base {
            backdrop-filter: blur(8px) saturate(1.06) contrast(1.01);
            -webkit-backdrop-filter: blur(8px) saturate(1.06) contrast(1.01);
        }

        body.performance-balanced #three-canvas {
            opacity: 0.42;
        }

        body:not(.custom-cursor-enabled) {
            cursor: auto;
        }

        body:not(.custom-cursor-enabled) a,
        body:not(.custom-cursor-enabled) button {
            cursor: pointer;
        }

        body:not(.custom-cursor-enabled) .cursor-dot,
        body:not(.custom-cursor-enabled) .cursor-ring {
            display: none;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                scroll-behavior: auto !important;
            }
        }