/* ============================================================
   惊喜之夜 v3 · 共享样式（nav + footer + tokens + utilities）
   来自 Surprise Night v3.html 主页设计语言
   ============================================================ */
:root {
  --bg-0: #05060a;
  --bg-1: #0b0c12;
  --bg-2: #12131c;
  --bg-3: #1a1c28;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.16);
  --text: rgba(255,255,255,0.92);
  --text-2: rgba(255,255,255,0.62);
  --text-3: rgba(255,255,255,0.38);
  --text-4: rgba(255,255,255,0.20);
  --accent: #C4354A;
  --accent-warm: #E8A87C;
  --accent-glow: rgba(196,53,74,0.5);
  --ink: #f7f3ea;
  --sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
  --serif-cn: "Noto Serif SC", "Songti SC", serif;
  --serif-en: "Cormorant Garamond", serif;
  --display: "Syne", "Noto Serif SC", serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --pad: clamp(20px, 4vw, 64px);
  --dur: .7s;
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
body {
  min-height: 100vh;
  position: relative;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: white; }

/* ============================================================
   噪点 + 光标光晕（全局，所有页面复用）
   ============================================================ */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 200;
  opacity: .08; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .6 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}
.cursor-glow {
  position: fixed; pointer-events: none; z-index: 100;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 60%);
  mix-blend-mode: screen;
  transform: translate(-50%, -50%);
  opacity: 0; transition: opacity .6s ease;
  filter: blur(20px);
}
body.has-cursor .cursor-glow { opacity: .45; }

/* ============================================================
   开场幕布（每页一次，localStorage 控制）
   ============================================================ */
.curtain {
  position: fixed; inset: 0; z-index: 500;
  pointer-events: none;
  display: grid; grid-template-columns: 1fr 1fr;
}
.curtain__panel {
  background: linear-gradient(180deg, #0a0a10 0%, #1a0a10 100%);
  transition: transform 1.4s cubic-bezier(.76,0,.24,1);
}
.curtain__panel--l { transform-origin: left; }
.curtain__panel--r { transform-origin: right; }
.curtain__logo {
  position: fixed; left: 50%; top: 50%;
  transform: translate(-50%,-50%);
  z-index: 501;
  font-family: var(--display);
  font-weight: 700; font-size: clamp(24px, 4vw, 44px);
  letter-spacing: .16em;
  color: var(--text);
  transition: opacity .6s ease, letter-spacing 1.2s ease;
  pointer-events: none;
  text-align: center;
}
.curtain__logo small {
  display: block;
  font-family: var(--serif-en); font-style: italic; font-weight: 400;
  font-size: 14px; letter-spacing: .2em; margin-top: 14px;
  opacity: .6;
}
.curtain__logo::after {
  content: ""; display: block;
  margin: 18px auto 0; width: 0; height: 1px;
  background: var(--accent);
  transition: width 1s .4s ease;
}
body.intro-done .curtain__logo { opacity: 0; letter-spacing: .32em; }
body.intro-done .curtain__panel--l { transform: translateX(-100%); }
body.intro-done .curtain__panel--r { transform: translateX(100%); }
body.intro-ready .curtain__logo::after { width: 120px; }
body.no-intro .curtain { display: none; }
body.no-intro .curtain__logo { display: none; }

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 12px var(--pad);
  display: flex; justify-content: space-between; align-items: center;
  transition: background .5s ease, padding .4s ease, border-color .4s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(5,6,10,0.72);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  padding: 14px var(--pad);
  border-bottom-color: var(--line);
}
.nav__brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--display); font-weight: 700;
  letter-spacing: .05em; font-size: 15px;
}
.nav__brand { position: relative; width: 400px; height: 44px; }
.nav__mark {
  position: absolute;
  top: calc(50% + 2px); left: 0;
  transform: translateY(-50%);
  width: 252px; height: 63px;
  background-image: url('../assets/logo.png');
  background-size: contain;
  background-repeat: no-repeat;
  background-position: left center;
  flex-shrink: 0;
  font-size: 0;
  color: transparent;
  pointer-events: none;
}
.nav__brand-cn, .nav__brand-en { display: none; }

.nav__links { display: flex; align-items: center; gap: 38px; }
.nav__link {
  font-size: 13px; letter-spacing: .18em; text-transform: uppercase;
  font-family: var(--display); font-weight: 500;
  position: relative; padding: 8px 0;
  color: var(--text-2);
  transition: color .3s ease;
}
.nav__link::after {
  content: ""; position: absolute; bottom: 2px; left: 0;
  width: 0; height: 1px; background: var(--accent);
  transition: width .4s var(--ease);
}
.nav__link:hover { color: var(--text); }
.nav__link:hover::after { width: 100%; }
.nav__link.is-active { color: var(--text); }
.nav__link.is-active::after { width: 100%; }

.nav__lang {
  display: flex; align-items: center; gap: 4px;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 4px;
}
.nav__lang button {
  width: 28px; height: 24px; border-radius: 999px;
  font-size: 11px; font-family: var(--display); font-weight: 600;
  color: var(--text-3); letter-spacing: .1em;
  transition: all .3s ease;
}
.nav__lang button.is-active { background: var(--text); color: #000; }

/* 旧的 860px 隐藏规则已移除，改为下方统一的汉堡菜单 */

/* ============================================================
   通用 hero（子页面用）
   ============================================================ */
.page-hero {
  position: relative;
  min-height: 70vh;
  display: flex; align-items: center;
  padding: 160px var(--pad) 80px;
  overflow: hidden;
  isolation: isolate;
}
.page-hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(196,53,74,0.12), transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(100,40,200,0.08), transparent 70%),
    linear-gradient(180deg, #05060a 0%, #0a0810 60%, #05060a 100%);
}
.page-hero__bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 75%);
}
.page-hero__inner {
  position: relative; z-index: 2;
  max-width: 1280px; width: 100%; margin: 0 auto;
}
.page-hero__kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-size: 11px; font-weight: 500;
  letter-spacing: .32em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 24px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(12px);
}
.page-hero__kicker-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: .5; transform: scale(.7); } }

.page-hero__title {
  font-family: var(--serif-cn); font-weight: 500;
  font-size: clamp(44px, 7.5vw, 104px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  text-wrap: pretty;
}
.page-hero__title em {
  font-style: italic; font-family: var(--serif-en);
  color: var(--accent); font-weight: 500;
}
.page-hero__lead {
  font-family: var(--serif-cn);
  font-size: clamp(15px, 1.5vw, 19px);
  color: var(--text-2);
  max-width: 640px; line-height: 1.7;
  margin-bottom: 10px;
}
.page-hero__tagline {
  font-family: var(--serif-en); font-style: italic;
  font-size: clamp(13px, 1.1vw, 15px);
  color: var(--text-3); letter-spacing: .02em;
}

.back-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--display); font-size: 11px;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 28px;
  transition: color .3s ease, gap .3s ease;
}
.back-link:hover { color: var(--accent); gap: 14px; }

/* ============================================================
   Section 通用
   ============================================================ */
.section {
  padding: 120px var(--pad);
  position: relative;
}
.section__inner {
  max-width: 1280px; margin: 0 auto;
  position: relative;
}
.section__kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--display); font-size: 11px; font-weight: 500;
  letter-spacing: .32em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 20px;
}
.section__kicker-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.section__title {
  font-family: var(--serif-cn); font-weight: 500;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  margin-bottom: 28px;
}
.section__title em {
  font-style: italic; font-family: var(--serif-en);
  color: var(--accent); font-weight: 500;
}
.section__lead {
  font-size: 16px; line-height: 1.8;
  color: var(--text-2); max-width: 640px;
}

/* ============================================================
   Info grid
   ============================================================ */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.info-cell {
  padding: 28px;
  background: var(--bg-1);
}
.info-cell .label {
  font-family: var(--display); font-size: 10px;
  letter-spacing: .24em; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 10px;
}
.info-cell .value {
  font-family: var(--serif-cn);
  font-size: 20px;
  color: var(--text);
  line-height: 1.4;
}

/* ============================================================
   Gallery
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 4px;
  background: var(--bg-2);
  cursor: pointer;
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .8s var(--ease), filter .6s ease;
  filter: saturate(.9);
}
.gallery-item:hover img {
  transform: scale(1.06);
  filter: saturate(1.1);
}
.gallery-item::after {
  content: ""; position: absolute; inset: 0;
  border: 1px solid transparent;
  transition: border-color .3s ease;
  pointer-events: none;
}
.gallery-item:hover::after { border-color: var(--accent); }

/* ============================================================
   Tag pill
   ============================================================ */
.tag-pill {
  display: inline-flex; align-items: center;
  padding: 6px 14px;
  font-family: var(--display); font-size: 11px;
  letter-spacing: .2em; text-transform: uppercase;
  border-radius: 999px;
  margin-right: 8px;
}
.tag-pill--red {
  background: var(--accent); color: white;
}
.tag-pill--outline {
  border: 1px solid var(--line-strong); color: var(--text-2);
}
.tag-pill--muted {
  background: rgba(255,255,255,0.06); color: var(--text-2);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 60px var(--pad) 40px;
  background: var(--bg-0);
}
.site-footer__inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 24px;
}
.site-footer__brand {
  font-family: var(--display); font-size: 12px;
  letter-spacing: .18em; color: var(--text-3);
}
.site-footer__brand em {
  font-family: var(--serif-en); font-style: italic; color: var(--accent);
}
.site-footer__links { display: flex; gap: 28px; }
.site-footer__links a {
  font-family: var(--display); font-size: 11px;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--text-3);
  transition: color .3s ease;
}
.site-footer__links a:hover { color: var(--accent); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px;
  font-family: var(--display); font-size: 12px;
  letter-spacing: .22em; text-transform: uppercase;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--text);
  cursor: pointer;
  transition: all .3s var(--ease);
}
.btn:hover {
  border-color: var(--accent);
  background: rgba(196,53,74,0.08);
}
.btn--primary {
  background: var(--accent); border-color: var(--accent);
}
.btn--primary:hover {
  background: #a52a3d; border-color: #a52a3d;
}
.btn--ghost { background: transparent; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--accent);
  font-family: var(--display); font-size: 13px;
  letter-spacing: .14em; text-transform: uppercase;
  transition: gap .3s ease;
}
.link-arrow:hover { gap: 18px; }

/* ============================================================
   Highlight list
   ============================================================ */
.hl-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 0;
}
.hl-list li {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px; line-height: 1.7;
  color: var(--text-2);
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  transition: padding .3s ease;
}
.hl-list li:hover { padding-left: 12px; }
.hl-list li::before {
  content: counter(hl-counter, decimal-leading-zero);
  counter-increment: hl-counter;
  font-family: var(--display); font-size: 12px;
  color: var(--accent); letter-spacing: .12em;
  line-height: 1.7;
}
.hl-list { counter-reset: hl-counter; }
.hl-list strong {
  display: block;
  font-family: var(--serif-cn);
  color: var(--text);
  font-size: 17px;
  margin-bottom: 4px;
  font-weight: 600;
}

/* ============================================================
   Sidebar box
   ============================================================ */
.side-box {
  border: 1px solid var(--line);
  padding: 32px;
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(196,53,74,0.04), transparent 60%);
  position: sticky; top: 100px;
}
.side-box h3 {
  font-family: var(--serif-cn); font-weight: 600;
  font-size: 20px;
  margin-bottom: 14px;
}
.side-box p {
  font-size: 14px; line-height: 1.8;
  color: var(--text-2);
  margin-bottom: 18px;
}

/* ============================================================
   2-col detail layout
   ============================================================ */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 60px;
  max-width: 1280px; margin: 0 auto;
  padding: 80px var(--pad);
}
.detail-grid h2 {
  font-family: var(--serif-cn); font-weight: 500;
  font-size: clamp(26px, 3vw, 36px);
  margin: 60px 0 24px;
  line-height: 1.2;
}
.detail-grid h2:first-child { margin-top: 0; }
.detail-grid p {
  font-size: 15px; line-height: 1.9;
  color: var(--text-2);
  margin-bottom: 20px;
}
.detail-grid blockquote {
  border-left: 3px solid var(--accent);
  padding: 8px 0 8px 24px;
  margin: 30px 0;
  font-family: var(--serif-cn);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
  font-style: italic;
}
@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
  .side-box { position: static; }
}

/* ============================================================
   Video modal
   ============================================================ */
.video-card {
  position: relative; aspect-ratio: 16/9;
  border-radius: 8px; overflow: hidden;
  cursor: pointer;
  margin: 30px 0;
}
.video-thumb {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transition: transform .6s ease, filter .4s ease;
  filter: brightness(.55);
}
.video-card:hover .video-thumb {
  transform: scale(1.04);
  filter: brightness(.7);
}
.video-play {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 80px; height: 80px; border-radius: 50%;
  background: rgba(196,53,74,0.95);
  display: grid; place-items: center;
  color: white; font-size: 22px;
  box-shadow: 0 10px 40px rgba(196,53,74,0.5);
  transition: transform .3s ease;
}
.video-card:hover .video-play { transform: translate(-50%,-50%) scale(1.12); }
.video-modal {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.88);
  display: none; place-items: center;
  padding: var(--pad);
  backdrop-filter: blur(8px);
}
.video-modal.is-open { display: grid; }
.video-modal__content {
  position: relative; width: 100%; max-width: 1100px;
  aspect-ratio: 16/9;
}
.video-modal__content iframe {
  width: 100%; height: 100%;
  border: 0; border-radius: 8px;
}
.video-modal__close {
  position: absolute; top: -44px; right: 0;
  color: white; font-size: 28px;
  background: none; border: 0; cursor: pointer;
}

/* ============================================================
   Entrance reveals
   ============================================================ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: translateY(0); }

/* ============================================================
   Mobile · 汉堡菜单（与首页保持一致）
   ============================================================ */
.nav__burger {
  display: none;
  width: 44px; height: 44px;
  background: transparent; border: 0;
  flex-direction: column; justify-content: center; align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 0;
  position: relative;
  z-index: 52;
}
.nav__burger span {
  display: block; width: 22px; height: 1.5px;
  background: var(--text);
  transition: transform .3s ease, opacity .3s ease;
}
.nav.nav--open .nav__burger span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav.nav--open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.nav--open .nav__burger span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav__burger { display: flex; }
  .nav__links {
    display: flex !important;
    position: fixed; top: 0; left: 0; right: 0;
    min-height: 100vh; max-height: 100vh;
    padding: 96px var(--pad) 40px;
    background: rgba(5,6,10,0.97);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    flex-direction: column; align-items: stretch;
    gap: 0;
    z-index: 51;
    transform: translateY(-110%);
    transition: transform .45s cubic-bezier(.2,.8,.2,1);
    pointer-events: none;
    overflow-y: auto;
    counter-reset: navItem;
  }
  .nav.nav--open .nav__links {
    transform: translateY(0);
    pointer-events: auto;
  }
  .nav__link {
    display: flex; align-items: baseline; gap: 20px;
    font-family: var(--serif-cn);
    font-size: 17px;
    font-weight: 500;
    letter-spacing: .03em;
    text-transform: none;
    padding: 16px 2px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    color: var(--text);
  }
  .nav__link::before {
    counter-increment: navItem;
    content: counter(navItem, decimal-leading-zero);
    font-family: var(--display);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: .3em;
    color: var(--text-3);
    min-width: 28px;
  }
  .nav__link::after {
    position: static;
    width: auto; height: auto;
    background: transparent;
    font-family: var(--serif-en);
    font-style: italic;
    font-size: 13px;
    font-weight: 400;
    color: var(--text-3);
    margin-left: auto;
    letter-spacing: .01em;
    transition: none;
  }
  .nav__link[href*="works"]::after { content: "Works"; }
  .nav__link[href*="collaborate"]::after { content: "Collaborate"; }
  .nav__link[href*="about"]::after { content: "About"; }
  .nav__link[href*="collaborators"]::after { content: "Artists"; }
  .nav__link[href*="contact"]::after { content: "Contact"; }
  .nav__link.is-active,
  .nav__link.is-active::before { color: var(--accent); }
  .nav__lang { margin-top: 28px; align-self: flex-start; }
}