/* =========================================================
   TIME TUNNEL · WU XUNMU · OFFICIAL WEBSITE
   Art-Grade CSS — Deep Space × Eastern Ink Aesthetic
   ========================================================= */

/* ── RESET & BASE ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black:       #050508;
  --deep:        #090912;
  --void:        #0d0d1a;
  --ink:         #12121f;
  --dusk:        #1a1a2e;
  --coal:        #1e1e30;
  --muted:       #2a2a40;
  --silver:      #9090a8;
  --pale:        #c8c8d8;
  --white:       #f0f0f5;
  --cream:       #e8e4d8;

  --gold:        #c9a84c;
  --gold-light:  #e8c96a;
  --gold-dim:    #7a6030;
  --amber:       #d4885a;
  --rust:        #8b4513;

  --nebula-1:    #2d1b4e;
  --nebula-2:    #1a2a5e;
  --nebula-3:    #0e2240;
  --nebula-4:    #3d0a2e;

  --glow-gold:   rgba(201,168,76,0.35);
  --glow-blue:   rgba(80,140,220,0.25);
  --glow-violet: rgba(140,70,180,0.2);

  --font-serif-en: 'Cormorant Garamond', 'Georgia', serif;
  --font-display:  'Cinzel', serif;
  --font-cn:       'Noto Serif SC', 'STSong', serif;

  --transition:  cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:    cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  --container:   1280px;
  --nav-h:       80px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--black);
  color: var(--pale);
  font-family: var(--font-cn);
  font-weight: 300;
  line-height: 1.75;
  overflow-x: hidden;
  cursor: none;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 2px; }

/* ── CONTAINER ── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ── COSMOS CANVAS ── */
#cosmos-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* ═══════════════════════════════════════
   CURSOR
═══════════════════════════════════════ */
#cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.1s, opacity 0.3s;
  mix-blend-mode: screen;
}

#cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(201,168,76,0.6);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s var(--ease-out), width 0.3s, height 0.3s, opacity 0.3s;
  mix-blend-mode: screen;
}

body:has(a:hover) #cursor-ring,
body:has(button:hover) #cursor-ring {
  width: 48px;
  height: 48px;
  border-color: var(--gold);
}

/* ═══════════════════════════════════════
   PRELOADER
═══════════════════════════════════════ */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s var(--transition), visibility 0.8s;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
}

.preloader-inner {
  text-align: center;
}

.preloader-tunnel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 24px;
}

.preloader-tunnel span {
  display: block;
  width: 2px;
  background: linear-gradient(to top, transparent, var(--gold), transparent);
  animation: tunnel-bar 1.2s ease-in-out infinite;
  border-radius: 2px;
}

.preloader-tunnel span:nth-child(1) { height: 12px; animation-delay: 0s;    margin: 0 3px; }
.preloader-tunnel span:nth-child(2) { height: 24px; animation-delay: 0.1s;  margin: 0 3px; }
.preloader-tunnel span:nth-child(3) { height: 48px; animation-delay: 0.2s;  margin: 0 3px; }
.preloader-tunnel span:nth-child(4) { height: 48px; animation-delay: 0.3s;  margin: 0 3px; }
.preloader-tunnel span:nth-child(5) { height: 24px; animation-delay: 0.4s;  margin: 0 3px; }
.preloader-tunnel span:nth-child(6) { height: 12px; animation-delay: 0.5s;  margin: 0 3px; }

@keyframes tunnel-bar {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50%       { opacity: 1;   transform: scaleY(1.2); }
}

.preloader-text {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.4em;
  color: var(--gold);
  opacity: 0.8;
  text-transform: uppercase;
}

/* ═══════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════ */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  transition: background 0.4s, backdrop-filter 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}

#main-nav.scrolled {
  background: rgba(5, 5, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: rgba(201,168,76,0.15);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-cn);
}

.logo-cn {
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.1em;
}

.logo-divider {
  color: var(--gold-dim);
  font-weight: 300;
}

.logo-en {
  font-size: 13px;
  font-family: var(--font-serif-en);
  color: var(--silver);
  letter-spacing: 0.1em;
  font-style: italic;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 13px;
  font-family: var(--font-cn);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--silver);
  transition: color 0.3s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s var(--transition);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--pale);
  transition: transform 0.3s, opacity 0.3s;
}

/* ═══════════════════════════════════════
   HERO
═══════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg-layers {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-layer {
  position: absolute;
  inset: 0;
}

.layer-cosmos {
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, var(--nebula-2) 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 80%, var(--nebula-4) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 20%, var(--nebula-1) 0%, transparent 50%),
    var(--black);
}

.layer-mist {
  background: radial-gradient(ellipse 100% 50% at 50% 100%,
    rgba(201,168,76,0.08) 0%, transparent 70%);
  animation: mist-drift 8s ease-in-out infinite alternate;
}

.layer-light {
  background: radial-gradient(circle 400px at 50% 40%,
    rgba(80,120,200,0.12) 0%, transparent 70%);
  animation: light-pulse 6s ease-in-out infinite alternate;
}

@keyframes mist-drift {
  from { transform: translateY(0) scale(1); }
  to   { transform: translateY(-20px) scale(1.05); }
}

@keyframes light-pulse {
  from { opacity: 0.5; }
  to   { opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 40px 80px;
  max-width: 900px;
}

.hero-subtitle-top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.25em;
  color: var(--silver);
  text-transform: uppercase;
  margin-bottom: 32px;
}

.hero-subtitle-top .sep {
  color: var(--gold);
  font-size: 16px;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 32px;
}

.title-cn {
  font-family: var(--font-cn);
  font-size: clamp(56px, 10vw, 120px);
  font-weight: 900;
  letter-spacing: 0.2em;
  color: var(--white);
  text-shadow:
    0 0 80px rgba(201,168,76,0.4),
    0 0 160px rgba(201,168,76,0.15);
  line-height: 1;
}

.title-en {
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 32px);
  font-weight: 400;
  letter-spacing: 0.5em;
  color: var(--gold);
  text-transform: uppercase;
  line-height: 1;
}

.hero-desc {
  font-size: 16px;
  font-weight: 300;
  line-height: 2;
  color: var(--silver);
  margin-bottom: 48px;
}

.hero-desc em {
  font-family: var(--font-serif-en);
  font-style: italic;
  color: var(--pale);
  display: block;
  margin-top: 4px;
  font-size: 15px;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.meta-num {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
}

.meta-label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--silver);
}

.hero-cta {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-family: var(--font-display);
  transition: opacity 0.3s;
}

.hero-cta:hover { opacity: 0.7; }

.hero-cta svg {
  width: 20px;
  animation: bounce 2s ease-in-out infinite;
}

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

.hero-scroll-hint {
  position: absolute;
  right: 48px;
  bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 2;
}

.hero-scroll-hint span {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--silver);
  writing-mode: vertical-lr;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ═══════════════════════════════════════
   REVEAL ANIMATIONS
═══════════════════════════════════════ */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

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

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

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

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.30s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.60s; }

/* ═══════════════════════════════════════
   SECTION HEADERS
═══════════════════════════════════════ */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 64px;
}

.section-number {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
}

.section-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.section-title .cn {
  font-family: var(--font-cn);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.1em;
}

.section-title .en {
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 2vw, 20px);
  font-weight: 300;
  color: var(--silver);
  letter-spacing: 0.2em;
  font-style: italic;
}

.section-title.light .cn { color: var(--white); }
.section-title.light .en { color: rgba(255,255,255,0.5); }

/* ═══════════════════════════════════════
   SECTION · VISION
═══════════════════════════════════════ */
.section-vision {
  position: relative;
  padding: 120px 40px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.vision-wrapper {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.vision-quote-mark {
  font-family: 'Georgia', serif;
  font-size: 160px;
  color: var(--gold-dim);
  opacity: 0.3;
  line-height: 0.6;
  margin-bottom: 24px;
  user-select: none;
}

.vision-quote {
  font-family: var(--font-cn);
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 300;
  line-height: 2;
  color: var(--white);
  letter-spacing: 0.08em;
  border: none;
  font-style: normal;
  margin-bottom: 24px;
}

.vision-quote-en {
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 1.8vw, 19px);
  font-style: italic;
  color: var(--silver);
  line-height: 1.9;
  margin-bottom: 32px;
}

.vision-author {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
  font-style: normal;
}

.vision-bg-text {
  position: absolute;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(80px, 18vw, 220px);
  font-weight: 900;
  color: rgba(201,168,76,0.03);
  letter-spacing: 0.15em;
  user-select: none;
  white-space: nowrap;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* ═══════════════════════════════════════
   SECTION · ARTIST
═══════════════════════════════════════ */
.section-artist {
  position: relative;
  padding: 120px 0;
  z-index: 1;
}

.artist-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  align-items: start;
}

.artist-portrait-frame {
  position: relative;
  aspect-ratio: 3/4;
  border: 1px solid rgba(201,168,76,0.2);
  background: var(--void);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.artist-portrait-frame::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: linear-gradient(135deg,
    rgba(201,168,76,0.3) 0%,
    transparent 40%,
    transparent 60%,
    rgba(201,168,76,0.15) 100%);
  pointer-events: none;
}

.portrait-glow {
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(201,168,76,0.15) 0%, transparent 70%);
  border-radius: 50%;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  animation: portrait-pulse 4s ease-in-out infinite;
}

@keyframes portrait-pulse {
  0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
  50%       { opacity: 1;   transform: translateX(-50%) scale(1.2); }
}

.artist-portrait-placeholder {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  width: 100%;
  height: 100%;
}

.artist-real-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  z-index: 3;
  opacity: 0;
  animation: imgFadeIn 1.2s ease 0.2s forwards;
  border-radius: 4px;
}

.portrait-initials {
  font-family: var(--font-cn);
  font-size: 80px;
  font-weight: 900;
  color: var(--gold);
  text-shadow: 0 0 40px var(--glow-gold);
  line-height: 1;
}

.portrait-rings {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.portrait-rings span {
  display: block;
  border-radius: 50%;
  border: 1px solid rgba(201,168,76,0.25);
  animation: ring-expand 3s ease-in-out infinite;
}

.portrait-rings span:nth-child(1) { width: 40px;  height: 40px;  animation-delay: 0s; }
.portrait-rings span:nth-child(2) { width: 70px;  height: 70px;  animation-delay: 0.5s; }
.portrait-rings span:nth-child(3) { width: 100px; height: 100px; animation-delay: 1s; }

@keyframes ring-expand {
  0%, 100% { opacity: 0.3; transform: scale(0.95); }
  50%       { opacity: 0.8; transform: scale(1.05); }
}

.artist-journey {
  margin-bottom: 48px;
  padding: 32px;
  border: 1px solid rgba(201,168,76,0.12);
  background: rgba(201,168,76,0.03);
  position: relative;
}

.artist-journey::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold), transparent);
}

.journey-title {
  font-family: var(--font-cn);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.journey-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.journey-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--pale);
  font-weight: 300;
  line-height: 1.6;
}

.journey-icon {
  color: var(--gold);
  font-size: 10px;
  flex-shrink: 0;
}

.artist-bio p {
  font-size: 15px;
  line-height: 2;
  color: var(--silver);
  margin-bottom: 20px;
}

.artist-bio p:last-child { margin-bottom: 0; }

/* ═══════════════════════════════════════
   SECTION · NARRATIVE
═══════════════════════════════════════ */
.section-narrative {
  position: relative;
  padding: 120px 0;
  z-index: 1;
  background: linear-gradient(to bottom, transparent, rgba(13,13,26,0.8), transparent);
}

.narrative-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-line {
  position: absolute;
  left: 28px;
  top: 20px;
  bottom: 20px;
  width: 1px;
  background: linear-gradient(to bottom, var(--gold), rgba(201,168,76,0.3), transparent);
}

.narrative-node {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 40px;
  padding: 48px 0;
  border-bottom: 1px solid rgba(201,168,76,0.06);
}

.narrative-node:last-child { border-bottom: none; }

.node-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.node-num {
  width: 56px;
  height: 56px;
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif-en);
  font-size: 18px;
  font-style: italic;
  color: var(--gold);
  background: var(--black);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: background 0.3s, box-shadow 0.3s;
}

.narrative-node:hover .node-num {
  background: rgba(201,168,76,0.1);
  box-shadow: 0 0 24px var(--glow-gold);
}

.node-content {
  padding-top: 8px;
}

.node-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  border: 1px solid rgba(201,168,76,0.3);
  padding: 3px 12px;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-family: var(--font-cn);
}

.node-content h3 {
  font-family: var(--font-cn);
  font-size: 22px;
  font-weight: 400;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.node-content p {
  font-size: 15px;
  line-height: 2;
  color: var(--silver);
  margin-bottom: 20px;
}

.node-spec {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.node-spec span {
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--pale);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 4px 14px;
  border-radius: 2px;
}

/* ═══════════════════════════════════════
   SECTION · WORKS
═══════════════════════════════════════ */
.section-works {
  position: relative;
  padding: 120px 0;
  z-index: 1;
}

.works-filter {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-cn);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--silver);
  background: none;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 24px;
  cursor: pointer;
  transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--gold);
  border-color: rgba(201,168,76,0.4);
  background: rgba(201,168,76,0.06);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.work-card {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  background: var(--void);
  transition: all 0.4s var(--transition);
}

.work-card:hover {
  z-index: 2;
  transform: scale(1.02);
}

.work-canvas {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.work-visual {
  position: absolute;
  inset: 0;
  transition: transform 0.6s var(--transition);
  overflow: hidden;
}

.work-card:hover .work-visual { transform: scale(1.08); }

/* Real artwork image styles */
.work-real-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 1;
  transition: transform 0.6s var(--transition), opacity 0.4s ease;
  opacity: 0;
  animation: imgFadeIn 0.8s ease 0.3s forwards;
}

@keyframes imgFadeIn {
  from { opacity: 0; transform: scale(1.05); }
  to   { opacity: 1; transform: scale(1); }
}

.work-real-img + .work-overlay {
  z-index: 2;
}

.work-real-img + .work-overlay + .work-brush-effect,
.work-real-img ~ .work-brush-effect {
  z-index: 3;
  opacity: 0.15; /* 有真实图片时水墨笔触效果减弱 */
}

.work-real-img ~ .work-ink-strokes {
  z-index: 4;
  opacity: 0.1;
}

/* Work visual backgrounds — art-inspired gradients */
.visual-1 {
  background:
    radial-gradient(ellipse 70% 50% at 30% 60%, rgba(40,20,60,0.9) 0%, transparent 70%),
    radial-gradient(ellipse 50% 80% at 70% 30%, rgba(10,30,70,0.8) 0%, transparent 60%),
    linear-gradient(135deg, #0a0a1a 0%, #1a0d30 40%, #0d1a3a 100%);
}

.visual-2 {
  background:
    radial-gradient(ellipse 80% 60% at 50% 70%, rgba(80,40,10,0.7) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 20%, rgba(40,60,20,0.6) 0%, transparent 60%),
    linear-gradient(160deg, #0d0d08 0%, #1a1200 50%, #2a1500 100%);
}

.visual-3 {
  background:
    radial-gradient(ellipse 100% 60% at 50% 50%, rgba(201,168,76,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 60% at 20% 80%, rgba(80,40,120,0.4) 0%, transparent 60%),
    linear-gradient(0deg, #080808 0%, #0f0f20 50%, #0a0812 100%);
}

.visual-4 {
  background:
    radial-gradient(ellipse 60% 80% at 50% 30%, rgba(20,40,80,0.8) 0%, transparent 70%),
    radial-gradient(ellipse 80% 40% at 60% 80%, rgba(10,30,50,0.6) 0%, transparent 60%),
    linear-gradient(200deg, #030308 0%, #080818 50%, #060c20 100%);
}

.visual-5 {
  background:
    radial-gradient(ellipse 70% 70% at 40% 40%, rgba(60,20,40,0.7) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 70% 70%, rgba(20,40,70,0.7) 0%, transparent 60%),
    linear-gradient(45deg, #100008 0%, #0a1020 60%, #120810 100%);
}

.visual-6 {
  background:
    radial-gradient(ellipse 60% 60% at 30% 50%, rgba(30,20,60,0.8) 0%, transparent 70%),
    radial-gradient(ellipse 70% 40% at 70% 60%, rgba(60,30,10,0.5) 0%, transparent 60%),
    linear-gradient(135deg, #080810 0%, #10080a 50%, #0a1010 100%);
}

/* Ink brush texture effect */
.ink-work::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      -45deg,
      transparent 0px,
      transparent 30px,
      rgba(255,255,255,0.012) 30px,
      rgba(255,255,255,0.012) 32px
    );
  pointer-events: none;
}

.oil-work::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      30deg,
      transparent 0px,
      transparent 20px,
      rgba(201,168,76,0.018) 20px,
      rgba(201,168,76,0.018) 22px
    );
  pointer-events: none;
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
}

.work-brush-effect {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 50%,
    rgba(255,255,255,0.04) 0%, transparent 70%);
  animation: brush-shimmer 4s ease-in-out infinite;
}

@keyframes brush-shimmer {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

.work-hover-info {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity 0.3s;
}

.work-card:hover .work-hover-info { opacity: 1; }

.work-hover-info span {
  font-family: var(--font-cn);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
  border: 1px solid rgba(201,168,76,0.4);
  padding: 8px 20px;
}

.work-info {
  padding: 24px;
  background: var(--void);
  border-top: 1px solid rgba(201,168,76,0.08);
}

.work-title-cn {
  font-family: var(--font-cn);
  font-size: 18px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.work-title-en {
  font-family: var(--font-serif-en);
  font-size: 13px;
  font-style: italic;
  color: var(--silver);
  margin-bottom: 12px;
}

.work-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.work-meta span {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--gold-dim);
  padding: 2px 10px;
  border: 1px solid rgba(201,168,76,0.15);
}

.work-note {
  font-size: 12px;
  color: var(--silver);
  opacity: 0.7;
  font-style: italic;
}

/* Card hidden state */
.work-card.hidden {
  display: none;
}

/* ═══════════════════════════════════════
   SECTION · TUNNEL PROJECT
═══════════════════════════════════════ */
.section-tunnel {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  background: var(--deep);
  z-index: 1;
}

.tunnel-visual-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.tunnel-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(201,168,76,0.06);
  animation: tunnel-ring-pulse calc(var(--i) * 1.5s + 4s) linear infinite;
}

.tunnel-ring:nth-child(1)  { width: 100px;  height: 100px;  }
.tunnel-ring:nth-child(2)  { width: 200px;  height: 200px;  }
.tunnel-ring:nth-child(3)  { width: 320px;  height: 320px;  animation-duration: 6s; }
.tunnel-ring:nth-child(4)  { width: 480px;  height: 480px;  animation-duration: 8s; }
.tunnel-ring:nth-child(5)  { width: 640px;  height: 640px;  animation-duration: 10s; }
.tunnel-ring:nth-child(6)  { width: 820px;  height: 820px;  animation-duration: 13s; }
.tunnel-ring:nth-child(7)  { width: 1100px; height: 1100px; animation-duration: 16s; }

@keyframes tunnel-ring-pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50%       { opacity: 0.7; transform: scale(1.02); }
}

.tunnel-light-beam {
  position: absolute;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, rgba(201,168,76,0.15), transparent);
  animation: beam-swing 8s ease-in-out infinite;
}

@keyframes beam-swing {
  0%, 100% { transform: rotate(-15deg); opacity: 0.3; }
  50%       { transform: rotate(15deg);  opacity: 0.7; }
}

.tunnel-content {
  position: relative;
  z-index: 2;
}

.tunnel-intro {
  text-align: center;
  margin-bottom: 72px;
}

.tunnel-tagline {
  font-family: var(--font-cn);
  font-size: clamp(16px, 2.5vw, 24px);
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--pale);
  margin-bottom: 8px;
}

.tunnel-tagline-en {
  font-family: var(--font-serif-en);
  font-size: 15px;
  font-style: italic;
  color: var(--silver);
  letter-spacing: 0.1em;
}

.tunnel-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  margin-bottom: 72px;
}

.tunnel-card {
  padding: 40px 28px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(201,168,76,0.08);
  transition: all 0.4s var(--transition);
  position: relative;
  overflow: hidden;
}

.tunnel-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(201,168,76,0.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s;
}

.tunnel-card:hover {
  background: rgba(201,168,76,0.05);
  border-color: rgba(201,168,76,0.25);
}

.tunnel-card:hover::before { opacity: 1; }

.tc-icon {
  font-size: 24px;
  color: var(--gold);
  margin-bottom: 20px;
  display: block;
}

.tunnel-card h4 {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.tunnel-card p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--silver);
  margin-bottom: 20px;
}

.tc-spec {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}

.tunnel-cities {
  text-align: center;
  margin-bottom: 60px;
}

.tunnel-cities h3 {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 400;
  color: var(--silver);
  letter-spacing: 0.2em;
  margin-bottom: 24px;
  text-transform: uppercase;
}

.cities-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.city-tag {
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--pale);
  border: 1px solid rgba(201,168,76,0.15);
  padding: 8px 20px;
  transition: all 0.3s;
  cursor: default;
}

.city-tag:hover {
  border-color: rgba(201,168,76,0.4);
  color: var(--gold);
  background: rgba(201,168,76,0.06);
}

.tunnel-timeline-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.timeline-strip-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 32px;
  border: 1px solid rgba(201,168,76,0.15);
  min-width: 160px;
}

.strip-phase {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  text-transform: uppercase;
}

.strip-desc {
  font-size: 14px;
  color: var(--pale);
  letter-spacing: 0.1em;
}

.strip-arrow {
  font-size: 20px;
  color: var(--gold-dim);
}

/* ═══════════════════════════════════════
   SECTION · POEM OPENER
═══════════════════════════════════════ */
.section-poem {
  padding: 80px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(201,168,76,0.06);
  border-bottom: 1px solid rgba(201,168,76,0.06);
  background: rgba(255,255,255,0.01);
}

.poem-inner {
  text-align: center;
}

.poem-dash {
  font-family: var(--font-serif-en);
  font-size: 20px;
  color: var(--gold-dim);
  letter-spacing: 0.2em;
  margin: 8px 0;
}

.poem-cn {
  font-family: var(--font-cn);
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--pale);
  margin-bottom: 10px;
}

.poem-en {
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 2vw, 20px);
  font-style: italic;
  color: var(--silver);
  letter-spacing: 0.15em;
}

/* ═══════════════════════════════════════
   WORK SERIES TAG
═══════════════════════════════════════ */
.work-series-tag {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 6px;
  opacity: 0.8;
}

/* ═══════════════════════════════════════
   WORK VISUAL — NEW SERIES STYLES
═══════════════════════════════════════ */
/* 界外 系列 — deep void blue-indigo ink */
.visual-jiewai-1 {
  background:
    radial-gradient(ellipse 50% 70% at 25% 60%, rgba(15,10,50,0.95) 0%, transparent 65%),
    radial-gradient(ellipse 70% 40% at 75% 30%, rgba(5,20,70,0.85) 0%, transparent 60%),
    radial-gradient(circle 200px at 50% 50%, rgba(80,60,140,0.3) 0%, transparent 70%),
    linear-gradient(170deg, #03030a 0%, #07071a 45%, #0a0520 100%);
}

.visual-jiewai-2 {
  background:
    radial-gradient(ellipse 80% 50% at 50% 80%, rgba(8,6,30,0.9) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 15% 20%, rgba(40,20,90,0.6) 0%, transparent 55%),
    radial-gradient(circle 150px at 70% 40%, rgba(60,40,120,0.25) 0%, transparent 60%),
    linear-gradient(145deg, #040408 0%, #080620 50%, #050318 100%);
}

.visual-jiewai-3 {
  background:
    radial-gradient(ellipse 60% 80% at 60% 40%, rgba(10,8,40,0.9) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 30% 80%, rgba(20,15,70,0.7) 0%, transparent 55%),
    linear-gradient(195deg, #030308 0%, #06051a 50%, #080420 100%);
}

/* 远古童话 系列 — warm earth, ancient ochre */
.visual-guta-1 {
  background:
    radial-gradient(ellipse 70% 50% at 40% 60%, rgba(60,35,10,0.85) 0%, transparent 65%),
    radial-gradient(ellipse 50% 70% at 70% 30%, rgba(40,25,5,0.7) 0%, transparent 60%),
    radial-gradient(circle 180px at 50% 50%, rgba(100,70,20,0.2) 0%, transparent 70%),
    linear-gradient(160deg, #0d0a04 0%, #180f03 45%, #100800 100%);
}

.visual-guta-2 {
  background:
    radial-gradient(ellipse 60% 60% at 50% 70%, rgba(50,30,8,0.8) 0%, transparent 65%),
    radial-gradient(ellipse 70% 40% at 20% 30%, rgba(35,20,5,0.6) 0%, transparent 55%),
    linear-gradient(135deg, #0c0804 0%, #150d02 50%, #0e0700 100%);
}

.visual-guta-3 {
  background:
    radial-gradient(ellipse 80% 50% at 60% 50%, rgba(45,28,8,0.85) 0%, transparent 70%),
    radial-gradient(ellipse 40% 70% at 25% 70%, rgba(30,18,4,0.7) 0%, transparent 55%),
    linear-gradient(180deg, #0a0702 0%, #130b02 50%, #0c0600 100%);
}

/* Extra oil visual */
.visual-oil-2 {
  background:
    radial-gradient(ellipse 60% 60% at 40% 50%, rgba(60,30,10,0.75) 0%, transparent 65%),
    radial-gradient(ellipse 50% 50% at 75% 30%, rgba(80,50,15,0.5) 0%, transparent 55%),
    radial-gradient(circle 200px at 50% 70%, rgba(201,168,76,0.08) 0%, transparent 70%),
    linear-gradient(145deg, #0a0804 0%, #1a1004 50%, #120900 100%);
}

/* ─── Ink stroke texture overlays ─── */
.work-ink-strokes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
}

.strokes-a {
  background-image:
    repeating-linear-gradient(-72deg,
      transparent 0px, transparent 18px,
      rgba(255,255,255,0.018) 18px, rgba(255,255,255,0.018) 19px),
    repeating-linear-gradient(18deg,
      transparent 0px, transparent 28px,
      rgba(255,255,255,0.010) 28px, rgba(255,255,255,0.010) 29px);
}

.strokes-b {
  background-image:
    repeating-linear-gradient(-50deg,
      transparent 0px, transparent 22px,
      rgba(200,200,255,0.015) 22px, rgba(200,200,255,0.015) 23px),
    repeating-linear-gradient(40deg,
      transparent 0px, transparent 35px,
      rgba(255,255,255,0.008) 35px, rgba(255,255,255,0.008) 36px);
}

.strokes-c {
  background-image:
    repeating-linear-gradient(-30deg,
      transparent 0px, transparent 15px,
      rgba(210,170,80,0.02) 15px, rgba(210,170,80,0.02) 16px),
    repeating-linear-gradient(60deg,
      transparent 0px, transparent 25px,
      rgba(210,170,80,0.012) 25px, rgba(210,170,80,0.012) 26px);
}

.strokes-d {
  background-image:
    repeating-linear-gradient(-80deg,
      transparent 0px, transparent 20px,
      rgba(160,180,255,0.015) 20px, rgba(160,180,255,0.015) 21px),
    repeating-linear-gradient(10deg,
      transparent 0px, transparent 30px,
      rgba(255,255,255,0.008) 30px, rgba(255,255,255,0.008) 31px);
}

/* ═══════════════════════════════════════
   SECTION · SERIES IN DEPTH
═══════════════════════════════════════ */
.section-series {
  position: relative;
  padding: 120px 0;
  z-index: 1;
  background: linear-gradient(to bottom, transparent, rgba(9,9,18,0.6), transparent);
}

.series-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  margin-bottom: 100px;
  padding-bottom: 100px;
  border-bottom: 1px solid rgba(201,168,76,0.06);
}

.series-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.series-block-reverse {
  direction: rtl;
}
.series-block-reverse > * {
  direction: ltr;
}

/* Series main visual */
.series-main-visual {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid rgba(201,168,76,0.12);
}

.series-real-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 1;
  opacity: 0;
  animation: imgFadeIn 1s ease 0.5s forwards;
}

.series-real-img + .sv-inner-glow,
.series-real-img + .sv-inner-glow + .sv-brush-marks,
.series-real-img ~ .sv-title-overlay {
  z-index: 2;
}

.series-real-img + .sv-inner-glow {
  opacity: 0.6;
}

.series-real-img + .sv-inner-glow + .sv-brush-marks {
  opacity: 0.08;
}

.sv-jiewai {
  background:
    radial-gradient(ellipse 70% 60% at 30% 50%, rgba(15,10,55,0.9) 0%, transparent 65%),
    radial-gradient(ellipse 60% 80% at 70% 30%, rgba(5,15,65,0.8) 0%, transparent 60%),
    radial-gradient(circle 250px at 55% 55%, rgba(70,50,140,0.25) 0%, transparent 65%),
    linear-gradient(160deg, #030309 0%, #080620 50%, #050318 100%);
}

.sv-guta {
  background:
    radial-gradient(ellipse 70% 60% at 35% 55%, rgba(55,32,8,0.9) 0%, transparent 65%),
    radial-gradient(ellipse 60% 70% at 72% 28%, rgba(38,22,4,0.75) 0%, transparent 60%),
    radial-gradient(circle 220px at 50% 60%, rgba(90,65,18,0.18) 0%, transparent 65%),
    linear-gradient(160deg, #0d0903 0%, #180e02 50%, #0e0800 100%);
}

.sv-inner-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 50%,
    rgba(80,60,160,0.12) 0%, transparent 70%);
  animation: sv-glow-pulse 5s ease-in-out infinite;
}

.glow-warm.sv-inner-glow {
  background: radial-gradient(ellipse 60% 50% at 50% 50%,
    rgba(180,120,40,0.12) 0%, transparent 70%);
}

@keyframes sv-glow-pulse {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 1; }
}

.sv-brush-marks {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.bm-jiewai {
  background-image:
    repeating-linear-gradient(-65deg,
      transparent 0, transparent 40px,
      rgba(120,100,220,0.03) 40px, rgba(120,100,220,0.03) 42px),
    repeating-linear-gradient(25deg,
      transparent 0, transparent 55px,
      rgba(255,255,255,0.015) 55px, rgba(255,255,255,0.015) 56px);
}

.bm-guta {
  background-image:
    repeating-linear-gradient(-40deg,
      transparent 0, transparent 35px,
      rgba(200,160,60,0.03) 35px, rgba(200,160,60,0.03) 37px),
    repeating-linear-gradient(50deg,
      transparent 0, transparent 50px,
      rgba(255,220,100,0.015) 50px, rgba(255,220,100,0.015) 51px);
}

.sv-title-overlay {
  position: absolute;
  bottom: 24px;
  left: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2;
}

.svo-cn {
  font-family: var(--font-cn);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 900;
  color: rgba(255,255,255,0.9);
  letter-spacing: 0.15em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.8);
  line-height: 1;
}

.svo-en {
  font-family: var(--font-serif-en);
  font-size: 13px;
  font-style: italic;
  color: var(--gold);
  letter-spacing: 0.2em;
}

/* Thumbnails row */
.series-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: 4px;
}

.st-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
}

.st-sm.sv-jiewai,
.st-sm.sv-jiewai-2,
.st-sm.sv-jiewai-3 {
  background: var(--sv-jiewai-bg, #080618);
}
.sv-jiewai-2 {
  background:
    radial-gradient(circle 60px at 40% 50%, rgba(40,30,100,0.6) 0%, transparent 70%),
    linear-gradient(145deg, #060512 0%, #0a0820 100%) !important;
}
.sv-jiewai-3 {
  background:
    radial-gradient(circle 80px at 60% 40%, rgba(60,45,130,0.5) 0%, transparent 70%),
    linear-gradient(160deg, #050410 0%, #080618 100%) !important;
}
.st-sm.sv-guta,
.st-sm.sv-guta-2,
.st-sm.sv-guta-3 {
  background: #120900;
}
.sv-guta-2 {
  background:
    radial-gradient(circle 60px at 45% 55%, rgba(70,45,12,0.6) 0%, transparent 70%),
    linear-gradient(145deg, #100800 0%, #1a1002 100%) !important;
}
.sv-guta-3 {
  background:
    radial-gradient(circle 80px at 55% 45%, rgba(80,52,15,0.55) 0%, transparent 70%),
    linear-gradient(160deg, #0e0700 0%, #170e01 100%) !important;
}

.st-label {
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  letter-spacing: 0.15em;
  color: rgba(201,168,76,0.7);
  white-space: nowrap;
  font-family: var(--font-display);
}

/* Series text column */
.series-text-col {
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.series-label {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--gold-dim);
  text-transform: uppercase;
}

.series-title-cn {
  font-family: var(--font-cn);
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.1em;
  line-height: 1;
}

.series-title-en {
  font-family: var(--font-serif-en);
  font-size: clamp(14px, 1.8vw, 20px);
  font-style: italic;
  color: var(--silver);
  letter-spacing: 0.2em;
}

.series-divider {
  width: 48px;
  height: 1px;
  background: linear-gradient(to right, var(--gold), transparent);
}

.series-desc {
  font-size: 15px;
  line-height: 2;
  color: var(--silver);
}

.series-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
  padding: 24px;
  border: 1px solid rgba(201,168,76,0.1);
  background: rgba(201,168,76,0.02);
}

.ss-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ss-k {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
}

.ss-v {
  font-size: 13px;
  color: var(--pale);
  letter-spacing: 0.05em;
}

/* ═══════════════════════════════════════
   SECTION · STATS
═══════════════════════════════════════ */
.section-stats {
  position: relative;
  padding: 100px 0;
  z-index: 1;
  border-top: 1px solid rgba(201,168,76,0.08);
  border-bottom: 1px solid rgba(201,168,76,0.08);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 40px;
  border-right: 1px solid rgba(201,168,76,0.08);
  position: relative;
}

.stat-item:last-child { border-right: none; }

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.8s var(--transition);
}

.stat-item.visible::after { width: 40%; }

.stat-num {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 12px;
}

.stat-num.currency::before { content: '$'; font-size: 0.5em; vertical-align: top; margin-top: 0.3em; display: inline-block; }
.stat-num.currency::after  { content: 'M'; font-size: 0.5em; vertical-align: top; margin-top: 0.3em; display: inline-block; }

.stat-label {
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--pale);
  font-family: var(--font-cn);
  margin-bottom: 4px;
}

.stat-sub {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--silver);
  font-family: var(--font-serif-en);
  font-style: italic;
}

/* ═══════════════════════════════════════
   SECTION · COLLABORATION
═══════════════════════════════════════ */
.section-collaboration {
  position: relative;
  padding: 120px 0;
  z-index: 1;
}

.collab-model {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 60px;
  padding: 48px;
  border: 1px solid rgba(201,168,76,0.1);
  background: rgba(255,255,255,0.01);
}

.collab-side {
  padding: 32px;
}

.collab-a {
  border-right: none;
}

.collab-role {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.collab-side h3 {
  font-family: var(--font-cn);
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: 0.08em;
}

.collab-side ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.collab-side li {
  font-size: 14px;
  color: var(--silver);
  line-height: 1.6;
}

.collab-exchange {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0 20px;
}

.exchange-icon {
  font-size: 36px;
  color: var(--gold);
  animation: exchange-pulse 2s ease-in-out infinite;
}

@keyframes exchange-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.1); }
}

.exchange-label {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--gold-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

.collab-note {
  padding: 32px 40px;
  border: 1px solid rgba(201,168,76,0.12);
  background: rgba(201,168,76,0.03);
  margin-bottom: 48px;
}

.collab-note p {
  font-size: 14px;
  color: var(--pale);
  line-height: 1.9;
  margin-bottom: 8px;
}

.collab-note p:last-child { margin-bottom: 0; }

.collab-note strong {
  color: var(--gold);
  font-weight: 600;
}

.city-targets h3 {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 400;
  color: var(--silver);
  letter-spacing: 0.2em;
  margin-bottom: 24px;
  text-align: center;
}

.city-criteria {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.criterion {
  font-size: 14px;
  color: var(--pale);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 10px 24px;
  transition: all 0.3s;
}

.criterion:hover {
  border-color: rgba(201,168,76,0.3);
  color: var(--gold);
}

/* ═══════════════════════════════════════
   ARTWORK MODAL
═══════════════════════════════════════ */
.work-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
}

.work-modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  cursor: pointer;
}

.modal-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 900px;
  width: 90%;
  max-height: 85vh;
  background: var(--void);
  border: 1px solid rgba(201,168,76,0.2);
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.4s var(--transition);
}

.work-modal.open .modal-inner { transform: scale(1); }

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 3;
  background: none;
  border: 1px solid rgba(201,168,76,0.3);
  color: var(--gold);
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.modal-close:hover {
  background: rgba(201,168,76,0.1);
  border-color: var(--gold);
}

.modal-visual {
  aspect-ratio: 1;
  position: relative;
  overflow: hidden;
  min-height: 300px;
}

.modal-text {
  padding: 40px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-title-cn {
  font-family: var(--font-cn);
  font-size: 28px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.1em;
}

.modal-title-en {
  font-family: var(--font-serif-en);
  font-size: 16px;
  font-style: italic;
  color: var(--silver);
}

.modal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.modal-meta span {
  font-size: 12px;
  color: var(--gold);
  border: 1px solid rgba(201,168,76,0.25);
  padding: 4px 12px;
}

.modal-desc {
  font-size: 14px;
  line-height: 2;
  color: var(--silver);
}

/* ═══════════════════════════════════════
   SECTION · CONTACT
═══════════════════════════════════════ */
.section-contact {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
  z-index: 1;
}

.contact-bg-cosmos {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 80% 20%, rgba(45,27,78,0.4) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 80%, rgba(26,42,94,0.3) 0%, transparent 70%);
  pointer-events: none;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
  position: relative;
  z-index: 2;
}

.contact-statement p {
  font-size: 15px;
  line-height: 2;
  color: var(--silver);
  margin-bottom: 24px;
}

.contact-statement em {
  font-family: var(--font-serif-en);
  font-style: italic;
  color: var(--pale);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  font-size: 12px;
  letter-spacing: 0.25em;
  color: var(--silver);
  font-family: var(--font-cn);
  text-transform: uppercase;
}

.form-field input,
.form-field select,
.form-field textarea {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--pale);
  font-family: var(--font-cn);
  font-size: 14px;
  padding: 12px 16px;
  transition: border-color 0.3s, background 0.3s;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--silver);
  opacity: 0.5;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: rgba(201,168,76,0.4);
  background: rgba(201,168,76,0.03);
}

.form-field select option {
  background: var(--void);
  color: var(--pale);
}

.form-field textarea { resize: vertical; min-height: 120px; }

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: none;
  border: 1px solid rgba(201,168,76,0.4);
  color: var(--gold);
  font-family: var(--font-cn);
  font-size: 14px;
  letter-spacing: 0.2em;
  padding: 16px 40px;
  cursor: pointer;
  transition: all 0.3s;
  align-self: flex-start;
}

.form-submit:hover {
  background: rgba(201,168,76,0.1);
  border-color: var(--gold);
  box-shadow: 0 0 24px rgba(201,168,76,0.2);
}

.form-submit svg {
  width: 18px;
  transition: transform 0.3s;
}

.form-submit:hover svg { transform: translateX(4px); }

.form-success {
  font-size: 14px;
  color: var(--gold);
  letter-spacing: 0.1em;
  line-height: 1.9;
  padding: 16px;
  border: 1px solid rgba(201,168,76,0.2);
  background: rgba(201,168,76,0.04);
  animation: fade-in 0.5s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════
   FOOTER
═══════════════════════════════════════ */
#main-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(201,168,76,0.08);
  background: var(--black);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 60px 48px 40px;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-name-cn {
  font-family: var(--font-cn);
  font-size: 24px;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.15em;
}

.footer-name-en {
  font-family: var(--font-serif-en);
  font-size: 16px;
  font-style: italic;
  color: var(--silver);
}

.footer-tagline {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--gold-dim);
  margin-top: 8px;
  text-transform: uppercase;
}

.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--silver);
  transition: color 0.3s;
}

.footer-nav a:hover { color: var(--gold); }

.footer-bottom {
  padding: 24px 48px;
  border-top: 1px solid rgba(255,255,255,0.04);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--silver);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  font-family: var(--font-serif-en);
  font-style: italic;
}

.footer-bottom .footer-copy {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  font-style: normal;
  margin-bottom: 0;
}

/* ═══════════════════════════════════════
   MOBILE NAV OPEN STATE
═══════════════════════════════════════ */
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */
@media (max-width: 1100px) {
  .artist-grid       { grid-template-columns: 1fr; gap: 48px; }
  .artist-image-col  { max-width: 360px; margin: 0 auto; }
  .tunnel-cards      { grid-template-columns: 1fr 1fr; }
  .stats-grid        { grid-template-columns: 1fr 1fr; }
  .stat-item         { border-bottom: 1px solid rgba(201,168,76,0.08); }
  .stat-item:nth-child(2) { border-right: none; }
  .series-block      { grid-template-columns: 1fr; gap: 48px; }
  .series-block-reverse { direction: ltr; }
}

@media (max-width: 900px) {
  .container         { padding: 0 24px; }
  .works-grid        { grid-template-columns: 1fr 1fr; }
  .contact-content   { grid-template-columns: 1fr; gap: 48px; }
  .collab-model      { grid-template-columns: 1fr; }
  .collab-exchange   { transform: rotate(90deg); margin: 20px 0; }
  .modal-inner       { grid-template-columns: 1fr; }
  .modal-visual      { min-height: 200px; aspect-ratio: auto; }
  .form-row          { grid-template-columns: 1fr; }
  .series-specs      { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  #main-nav {
    padding: 0 24px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(5,5,8,0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: center;
    padding: 32px;
    gap: 24px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.4s var(--transition), opacity 0.4s, visibility 0.4s;
    border-bottom: 1px solid rgba(201,168,76,0.15);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links a {
    font-size: 16px;
  }

  .hero-meta {
    gap: 24px;
  }

  .meta-num { font-size: 28px; }

  .tunnel-cards { grid-template-columns: 1fr; }
  .works-grid   { grid-template-columns: 1fr; }
  .stats-grid   { grid-template-columns: 1fr 1fr; }

  .footer-top   { flex-direction: column; padding: 40px 24px 24px; }
  .footer-bottom { padding: 20px 24px; }
  .footer-nav   { gap: 16px; }

  .hero-scroll-hint { display: none; }

  .narrative-node { grid-template-columns: 40px 1fr; gap: 20px; }
  .node-num       { width: 40px; height: 40px; font-size: 14px; }
  .timeline-line  { left: 19px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item  { border-right: none; }
  .collab-model { padding: 24px 16px; }
}

/* ═══════════════════════════════════════
   UTILITY
═══════════════════════════════════════ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}