/* ARTDUO — 双人艺术现场
   Design system: ink / rice paper / cinnabar. No external assets or fonts. */

:root {
  --bg: #0b0b0c;
  --bg-2: #101011;
  --bg-3: #161617;
  --ink: #efe7da;
  --ink-2: rgba(239, 231, 218, .72);
  --ink-3: rgba(239, 231, 218, .46);
  --line: rgba(239, 231, 218, .16);
  --line-2: rgba(239, 231, 218, .08);
  --red: #ff4a2e;
  --red-2: #d93a21;
  --pink: #f0bfb4;
  --acid: #d8ff3e;
  --card: #121213;
  --glass: rgba(11, 11, 12, .72);
  --serif: "Bodoni 72", "Didot", "Iowan Old Style", "Songti SC", "Noto Serif SC", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --pad: clamp(20px, 4.5vw, 72px);
  --max: 1480px;
  --spring: cubic-bezier(.16, 1, .3, 1);
  --ease: cubic-bezier(.4, 0, .2, 1);
}

html[data-theme="light"] {
  --bg: #efe7da;
  --bg-2: #e7ddcb;
  --bg-3: #dfd2bd;
  --ink: #0b0b0c;
  --ink-2: rgba(11, 11, 12, .74);
  --ink-3: rgba(11, 11, 12, .48);
  --line: rgba(11, 11, 12, .18);
  --line-2: rgba(11, 11, 12, .09);
  --red: #e23a1f;
  --red-2: #bd2e18;
  --pink: #d9a79a;
  --acid: #6d7d00;
  --card: #e9dfcf;
  --glass: rgba(239, 231, 218, .78);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background-color .45s var(--ease), color .45s var(--ease);
}
body.is-locked { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--red); color: #fff; }

.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 200;
  padding: 10px 14px; background: var(--ink); color: var(--bg);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

.grain {
  position: fixed; inset: -20%; z-index: 60; pointer-events: none;
  opacity: .055; mix-blend-mode: overlay;
  background-image: url("/works/grain.svg");
  background-size: 180px 180px;
  animation: grainShift 1.2s steps(2) infinite;
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  50% { transform: translate(-1.5%, 1%); }
  100% { transform: translate(1%, -1.5%); }
}

.cursor {
  position: fixed; left: 0; top: 0; z-index: 120; width: 30px; height: 30px;
  border: 1px solid var(--red); border-radius: 50%; pointer-events: none;
  transform: translate(-50%, -50%); transition: width .25s var(--spring), height .25s var(--spring), background .25s var(--ease), opacity .2s;
  opacity: 0; mix-blend-mode: difference;
}
.cursor span { position: absolute; left: 50%; top: 50%; width: 4px; height: 4px; background: var(--red); border-radius: 50%; transform: translate(-50%, -50%); }
.cursor.is-on { opacity: 1; }
.cursor.is-hover { width: 64px; height: 64px; background: var(--red); border-color: transparent; }
.cursor.is-hover span { background: var(--bg); }
@media (pointer: coarse) { .cursor { display: none; } }

/* ---------- header ---------- */
.site-head {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 18px var(--pad);
  border-bottom: 1px solid transparent;
  transition: background .35s var(--ease), border-color .35s var(--ease), padding .35s var(--ease), backdrop-filter .35s;
}
.site-head.is-scrolled {
  padding-top: 12px; padding-bottom: 12px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 13px; letter-spacing: .16em; font-weight: 600; }
.brand-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(255, 74, 46, .14); }
.brand-name { position: relative; }
.site-nav { display: flex; gap: clamp(16px, 2.6vw, 40px); font-size: 12px; letter-spacing: .12em; color: var(--ink-2); }
.site-nav a { position: relative; padding: 4px 0; transition: color .2s; }
.site-nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 1px; background: var(--red); transition: width .3s var(--spring); }
.site-nav a:hover { color: var(--ink); }
.site-nav a:hover::after { width: 100%; }
.head-actions { display: flex; align-items: center; gap: 12px; }
.theme-btn {
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em;
  padding: 7px 9px; border: 1px solid var(--line); border-radius: 999px;
  color: var(--ink-2); transition: border-color .2s, color .2s, background .2s;
}
.theme-btn:hover { border-color: var(--ink); color: var(--ink); }
.ticket {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: .1em; padding: 9px 14px;
  background: var(--ink); color: var(--bg); border-radius: 999px;
  transition: transform .3s var(--spring), background .2s;
}
.ticket:hover { transform: translateY(-2px); background: var(--red); color: #fff; }
.ticket span { font-size: 13px; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  max-width: var(--max); margin: 0 auto;
  padding: clamp(118px, 15vh, 180px) var(--pad) clamp(70px, 9vh, 120px);
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: space-between;
}
.hero-kicker {
  display: flex; justify-content: space-between; gap: 20px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--ink-3);
  padding-bottom: 18px; border-bottom: 1px solid var(--line);
}
.hero-kicker span { display: inline-flex; align-items: center; gap: 8px; }
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--red); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

.hero-title {
  margin: clamp(34px, 5vh, 64px) 0 clamp(28px, 5vh, 58px);
  font-family: var(--serif); font-size: clamp(86px, 18.2vw, 268px);
  line-height: .76; letter-spacing: -.065em; font-weight: 400;
  display: flex; flex-direction: column;
}
.title-line { display: block; }
.title-line.outline {
  color: transparent;
  -webkit-text-stroke: 1px var(--ink);
  text-stroke: 1px var(--ink);
  margin-left: clamp(40px, 12vw, 190px);
}
.title-line.outline::after { content: ""; display: inline-block; width: .09em; height: .09em; margin-left: .12em; border-radius: 50%; background: var(--red); vertical-align: .08em; }
html[data-theme="light"] .title-line.outline { -webkit-text-stroke-color: var(--ink); }

.hero-grid {
  display: grid; grid-template-columns: 1.05fr 1.35fr .85fr;
  gap: clamp(24px, 4vw, 64px); align-items: start;
}
.hero-copy { padding-bottom: 4px; }
.hero-cn { margin: 0 0 16px; font-family: var(--serif); font-size: clamp(22px, 2.2vw, 34px); line-height: 1.35; letter-spacing: -.01em; }
.lede { max-width: 30ch; margin: 0 0 30px; color: var(--ink-2); font-size: 13px; line-height: 1.75; }
.text-link { display: inline-flex; align-items: center; gap: 18px; padding-bottom: 7px; border-bottom: 1px solid var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.text-link span { color: var(--red); font-size: 15px; transition: transform .3s var(--spring); }
.text-link:hover span { transform: translateY(5px); }

.hero-art { margin: 0; }
.hero-art-frame { position: relative; overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); box-shadow: 0 40px 100px rgba(0,0,0,.35); }
.hero-art-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(255,255,255,.1), transparent 35%); pointer-events: none; }
.hero-art img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; transition: transform 1.2s var(--spring); }
.hero-art:hover img { transform: scale(1.035); }
.hero-art figcaption { display: flex; justify-content: space-between; gap: 12px; padding-top: 10px; color: var(--ink-3); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }

.hero-meta { margin: 0; display: grid; gap: 18px; }
.hero-meta div { padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.hero-meta dt { font-family: var(--mono); font-size: 9px; letter-spacing: .16em; color: var(--ink-3); margin-bottom: 5px; }
.hero-meta dd { margin: 0; font-size: 12px; line-height: 1.5; }
.hero-meta em { font-style: normal; color: var(--ink-3); font-size: 10px; letter-spacing: .04em; }

/* ---------- marquee ---------- */
.marquee { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.marquee-track {
  display: flex; align-items: center; gap: 30px; width: max-content;
  padding: 15px 0; animation: marquee 36s linear infinite;
  font-family: var(--mono); font-size: 10px; letter-spacing: .18em; color: var(--ink-2);
}
.marquee-track .star { color: var(--red); font-size: 14px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
section[id] { scroll-margin-top: 84px; }
.section { max-width: var(--max); margin: 0 auto; padding: clamp(90px, 12vw, 170px) var(--pad) 0; }
.section-head {
  display: grid; grid-template-columns: 52px minmax(0, 1fr) minmax(0, .8fr);
  gap: 24px; align-items: end; padding-bottom: 26px; border-bottom: 1px solid var(--line);
}
.section-index { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: var(--red); padding-bottom: 8px; }
.section-head h2 { margin: 0; font-family: var(--serif); font-size: clamp(40px, 5.4vw, 82px); line-height: .95; letter-spacing: -.035em; font-weight: 400; }
.section-head h2 em { font-style: normal; color: var(--ink-3); font-size: .52em; letter-spacing: 0; margin-left: .12em; }
.section-head p { margin: 0 0 6px; max-width: 40ch; color: var(--ink-2); font-size: 12px; line-height: 1.7; }

/* ---------- works ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; padding: 22px 0 0 76px; }
.filter {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--ink-2);
  transition: color .2s, border-color .2s, background .2s;
}
.filter span { font-size: 8px; color: var(--ink-3); }
.filter:hover { border-color: var(--ink); color: var(--ink); }
.filter.is-active { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.filter.is-active span { color: color-mix(in srgb, var(--bg) 60%, transparent); }

.work-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(48px, 8vw, 110px) clamp(20px, 3vw, 44px); padding-top: clamp(40px, 6vw, 76px); }
.work {
  position: relative; margin-top: var(--stagger, 0px); cursor: pointer;
  transition: opacity .3s var(--ease), transform .55s var(--spring);
}
.work.is-hidden { display: none; }
.work-media { position: relative; overflow: hidden; background: var(--bg-2); border: 1px solid var(--line-2); }
.work-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.24)); opacity: 0; transition: opacity .4s; }
.work:hover .work-media::after, .work:focus-visible .work-media::after { opacity: 1; }
.work-media img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; transition: transform 1s var(--spring), filter .5s var(--ease); }
.work:hover img, .work:focus-visible img { transform: scale(1.035); filter: saturate(1.06); }
.work-no {
  position: absolute; top: 14px; left: 16px; z-index: 2;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  color: var(--ink); mix-blend-mode: difference;
}
.work-tag {
  position: absolute; right: 14px; bottom: 14px; z-index: 2;
  padding: 5px 9px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px;
  color: #fff; font-family: var(--mono); font-size: 8px; letter-spacing: .14em;
  opacity: 0; transform: translateY(6px); transition: opacity .3s, transform .35s var(--spring);
  backdrop-filter: blur(6px);
}
.work:hover .work-tag, .work:focus-visible .work-tag { opacity: 1; transform: none; }
.work-info { display: flex; justify-content: space-between; gap: 16px; padding-top: 14px; }
.work-info h3 { margin: 0 0 4px; font-family: var(--serif); font-size: clamp(20px, 2vw, 28px); font-weight: 400; letter-spacing: -.015em; }
.work-info p { margin: 0; color: var(--ink-3); font-size: 10px; letter-spacing: .04em; }
.work-info > span { padding-top: 4px; font-family: var(--mono); font-size: 9px; letter-spacing: .14em; color: var(--red); }
.work-empty { padding: 40px 0 0 76px; color: var(--ink-3); font-size: 12px; }

/* ---------- duo ---------- */
.duo-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(32px, 6vw, 90px); padding-top: clamp(40px, 6vw, 76px); }
.artist { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1fr); gap: clamp(18px, 2.4vw, 34px); align-items: start; }
.artist:nth-child(2) { margin-top: clamp(40px, 8vw, 110px); }
.artist figure { margin: 0; overflow: hidden; background: var(--bg-2); }
.artist figure img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; transition: transform 1s var(--spring); }
.artist:hover figure img { transform: scale(1.03); }
.artist-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.artist-head h3 { margin: 0; font-family: var(--serif); font-size: clamp(28px, 3vw, 44px); font-weight: 400; letter-spacing: -.03em; }
.artist-head span { font-family: var(--mono); font-size: 9px; letter-spacing: .1em; color: var(--ink-3); }
.artist-copy p { margin: 18px 0 22px; font-family: var(--serif); font-size: clamp(15px, 1.35vw, 19px); line-height: 1.7; color: var(--ink-2); }
.artist-copy ul { margin: 0; padding: 0; list-style: none; }
.artist-copy li { padding: 8px 0; border-top: 1px solid var(--line-2); color: var(--ink-3); font-size: 10px; letter-spacing: .02em; }

/* ---------- visit ---------- */
.visit { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(36px, 7vw, 110px); align-items: start; }
.visit-quote { position: relative; padding: 10px 0 0; }
.quote-mark { position: absolute; left: -8px; top: -38px; font-family: var(--serif); font-size: 140px; line-height: 1; color: var(--red); opacity: .5; }
blockquote { position: relative; margin: 0; font-family: var(--serif); font-size: clamp(34px, 3.6vw, 58px); line-height: 1.22; letter-spacing: -.035em; }
.visit-info { padding-top: 8px; }
.visit-info h2 { margin: 12px 0 26px; font-family: var(--serif); font-size: clamp(36px, 4vw, 60px); font-weight: 400; letter-spacing: -.03em; }
.visit-info h2 em { font-style: normal; color: var(--ink-3); font-size: .55em; }
.info-list { margin: 0 0 28px; }
.info-list div { display: flex; justify-content: space-between; gap: 18px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 11px; }
.info-list dt { color: var(--ink-3); font-family: var(--mono); font-size: 9px; letter-spacing: .1em; }
.info-list dd { margin: 0; text-align: right; }
.info-list a { border-bottom: 1px solid var(--line); }
.cta {
  display: inline-flex; align-items: center; gap: 18px; padding: 12px 18px;
  background: var(--red); color: #fff; border-radius: 999px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  transition: transform .3s var(--spring), background .2s;
}
.cta:hover { transform: translateY(-3px); background: var(--red-2); }
.cta span { font-size: 14px; }

/* ---------- footer ---------- */
.site-foot {
  max-width: var(--max); margin: clamp(100px, 14vw, 180px) auto 0;
  padding: 30px var(--pad) 34px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: flex-end; gap: 24px;
}
.foot-brand { font-family: var(--serif); font-size: clamp(40px, 6vw, 84px); line-height: .8; letter-spacing: -.05em; }
.foot-brand sup { font-family: var(--mono); font-size: 9px; letter-spacing: 0; vertical-align: super; color: var(--red); }
.foot-meta { display: flex; gap: 22px; align-items: center; color: var(--ink-3); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.foot-meta a { color: var(--ink-2); }
.foot-meta a:hover { color: var(--red); }

/* ---------- lightbox ---------- */
.lightbox {
  width: min(1180px, calc(100vw - 32px)); max-width: none;
  padding: 0; border: 1px solid var(--line); background: var(--bg);
  color: var(--ink); overflow: visible;
}
.lightbox::backdrop { background: rgba(0,0,0,.82); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.lb-inner { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); min-height: min(78vh, 760px); }
.lb-figure { margin: 0; background: var(--bg-2); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.lb-figure img { width: 100%; height: 100%; max-height: 82vh; object-fit: contain; }
.lb-copy { padding: clamp(28px, 4vw, 56px); display: flex; flex-direction: column; justify-content: center; }
.lb-index { font-family: var(--mono); font-size: 9px; letter-spacing: .14em; color: var(--red); }
.lb-copy h2 { margin: 14px 0 2px; font-family: var(--serif); font-size: clamp(32px, 3.4vw, 52px); font-weight: 400; line-height: 1; letter-spacing: -.03em; }
.lb-cn { margin: 0 0 26px; color: var(--ink-3); font-size: 12px; letter-spacing: .06em; }
.lb-copy dl { margin: 0 0 24px; }
.lb-copy dl div { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 10px; }
.lb-copy dt { color: var(--ink-3); font-family: var(--mono); letter-spacing: .08em; }
.lb-copy dd { margin: 0; text-align: right; }
.lb-note { margin: 0; color: var(--ink-2); font-family: var(--serif); font-size: 14px; line-height: 1.7; }
.lb-close { position: absolute; top: -44px; right: 0; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--ink-2); }
.lb-close span { font-size: 16px; margin-left: 6px; }
.lb-close:hover { color: var(--red); }
.lb-nav { position: absolute; top: 50%; transform: translateY(-50%); z-index: 2; width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; color: #fff; background: rgba(0,0,0,.35); backdrop-filter: blur(8px); }
.lb-prev { left: 12px; }
.lb-next { right: 12px; }
.lb-nav:hover { background: var(--red); border-color: var(--red); }

/* ---------- reveal ---------- */
html.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--spring); }
html.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .grain { animation: none; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-meta { grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .hero-meta div { border-bottom: 0; padding-bottom: 0; }
  .section-head { grid-template-columns: 40px minmax(0, 1fr); }
  .section-head p { grid-column: 2; margin-top: 10px; }
  .visit { grid-template-columns: 1fr; }
  .visit-info { max-width: 520px; }
}

@media (max-width: 760px) {
  .site-head { padding: 12px var(--pad); }
  .site-nav { display: none; }
  .ticket { padding: 8px 12px; }
  .hero { padding-top: 104px; }
  .hero-title { font-size: clamp(76px, 25vw, 150px); }
  .title-line.outline { margin-left: 14vw; }
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-art { order: 0; max-width: 100%; margin-left: 0; }
  .hero-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-meta div:nth-child(3), .hero-meta div:nth-child(4) { padding-top: 12px; border-top: 1px solid var(--line); }
  .section { padding-top: 84px; }
  .section-head h2 { font-size: clamp(36px, 10vw, 58px); }
  .filters { padding-left: 0; }
  .work-grid { grid-template-columns: 1fr; gap: 54px; }
  .work { margin-top: 0 !important; }
  .work-info h3 { font-size: 24px; }
  .duo-grid { grid-template-columns: 1fr; gap: 60px; }
  .artist { grid-template-columns: 1fr; }
  .artist:nth-child(2) { margin-top: 0; }
  .artist figure img { aspect-ratio: 4 / 3; }
  .visit-quote blockquote { font-size: clamp(30px, 9vw, 52px); }
  .quote-mark { top: -24px; font-size: 100px; }
  .site-foot { flex-direction: column; align-items: flex-start; gap: 18px; }
  .foot-meta { flex-wrap: wrap; gap: 14px; }
  .lightbox { width: calc(100vw - 16px); }
  .lb-inner { grid-template-columns: 1fr; max-height: 86vh; overflow: auto; }
  .lb-figure img { max-height: 48vh; }
  .lb-copy { padding: 24px; }
  .lb-close { top: 8px; right: 12px; z-index: 3; color: #fff; }
  .lb-nav { top: 30%; }
}

@media (max-width: 420px) {
  .theme-btn { padding: 6px 8px; font-size: 9px; }
  .hero-kicker { font-size: 8px; letter-spacing: .12em; }
  .hero-art { max-width: 100%; }
  .work-info { flex-direction: column; gap: 4px; }
  .work-info > span { padding-top: 0; }
}