@import url("https://fonts.loli.net/css2?family=Instrument+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap");

:root {
  color-scheme: dark;
  --bg: #030303;
  --bg-card: #101010;
  --text: #f5f5f5;
  --muted: #9c9c9c;
  --accent: #fcd34d;
  --border: rgba(255, 255, 255, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: "Space Grotesk", "Instrument Sans", "Inter", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-heading: "Instrument Sans", "Space Grotesk", "Inter", "Noto Sans SC",
    "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Space Grotesk", "Inter", "Noto Sans SC", "PingFang SC",
    "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "Space Mono", "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular",
    ui-monospace, monospace;
  --font-size-base: clamp(1rem, 1.1vw, 1.08rem);
  --font-size-small: clamp(0.78rem, 0.95vw, 0.9rem);
  --font-size-h1: clamp(2.4rem, 5vw, 3.8rem);
  --font-size-h2: clamp(1.9rem, 3.2vw, 2.7rem);
  --font-size-h3: clamp(1.35rem, 2.2vw, 1.8rem);
  --line-height-heading: 1.18;
  --line-height-body: 1.65;
  --tracking-tight: -0.01em;
  --tracking-base: 0.04em;
  --tracking-wide: 0.18em;
  --tracking-wider: 0.28em;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: var(--line-height-body);
  letter-spacing: var(--tracking-base);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  opacity: 1;
  transition: opacity 0.4s ease-in-out;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-width: 320px;
}

img,
svg,
video,
canvas,
picture {
  max-width: 100%;
  height: auto;
}

body.is-page-loading {
  opacity: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--line-height-heading);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 0.6em;
  text-transform: none;
}

h1 {
  font-size: var(--font-size-h1);
  font-weight: 650;
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

p,
li {
  font-size: var(--font-size-base);
  line-height: var(--line-height-body);
  letter-spacing: var(--tracking-base);
}

small,
.eyebrow {
  font-size: var(--font-size-small);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  font-weight: 500;
  color: var(--muted);
}

#site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px clamp(20px, 5vw, 80px);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid transparent;
}

#site-header.is-compact {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: var(--border);
  padding-block: 14px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.logo {
  font-size: 1.12rem;
  letter-spacing: 0.24em;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 800;
  text-transform: uppercase;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--text);
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  position: relative;
  font-weight: 500;
  font-family: var(--font-heading);
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

nav a:hover {
  color: var(--accent);
}

nav a:hover::after {
  transform: scaleX(1);
}

nav a.is-active,
nav a[aria-current="page"] {
  color: var(--accent);
}

nav a.is-active::after,
nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

::where(a, button, .btn, .contact-btn, .filter-button, .mobile-menu-toggle, .back-to-top):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
  transform-origin: center;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

main {
  padding-top: 120px;
}

.home-page main {
  padding-top: 80px;
}

.works-page main {
  padding-top: 70px;
}

.bts-page main {
  padding-top: 70px;
}

.work-detail-page main {
  padding-top: 70px;
}

.work-detail-page .work-hero {
  padding-top: clamp(16px, 3vw, 32px);
  margin-top: 0;
}

.work-detail-page section {
  padding-inline: clamp(24px, 6vw, 120px);
}

.studio-page main {
  padding-top: 70px;
}

.rental-page main {
  padding-top: 70px;
}

section {
  padding: clamp(60px, 10vw, 120px) clamp(20px, 6vw, 100px);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 18px;
  gap: 30px;
}

.section-heading h2 {
  font-size: var(--font-size-h2);
  margin: 0;
  letter-spacing: var(--tracking-tight);
}

.section-heading span {
  font-family: var(--font-heading);
  color: var(--muted);
  letter-spacing: var(--tracking-wide);
  font-size: var(--font-size-small);
  text-transform: uppercase;
  font-weight: 500;
}

.btn {
  padding: 14px 32px;
  border: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text);
  background: transparent;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn.primary {
  background: var(--accent);
  color: #1a1a1a;
  border-color: var(--accent);
  font-weight: 500;
}

.btn.primary:hover {
  background: #fdd835;
  box-shadow: 0 8px 24px rgba(252, 211, 77, 0.3);
}

.btn:hover {
  transform: translateY(-3px);
  border-color: var(--text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.btn:active {
  transform: translateY(-1px);
}

.works-grid {
  display: grid;
  gap: 2px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.works-grid--cinematic {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  column-gap: 18px;
  row-gap: 12px;
  padding-inline: clamp(8px, 2vw, 32px);
}

.works-grid--cinematic .work-card figure {
  aspect-ratio: 2.39 / 1;
}

.work-card {
  overflow: hidden;
  background: transparent;
  position: relative;
  transition: var(--transition);
}

.work-card__link {
  display: block;
  color: inherit;
  text-decoration: none;
  height: 100%;
}

.work-card figure {
  margin: 0;
  position: relative;
  aspect-ratio: 2.39 / 1;
  overflow: hidden;
}

.work-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  filter: saturate(1.05);
}

.work-card-caption {
  padding: 3px 6px 1px;
  text-align: center;
}

.work-meta {
  margin-top: 1px;
}

.work-caption-title {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--font-heading);
  font-weight: 500;
}

.work-label {
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: var(--accent);
  text-transform: uppercase;
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
}

.work-label__tag {
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.video-frame {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: #050505;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.video-frame video {
  width: 100%;
  display: block;
  aspect-ratio: 2.39 / 1;
  background: #000;
}

.video-frame__badge {
  position: absolute;
  top: 18px;
  left: 18px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 0.72rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  font-family: var(--font-heading);
  font-weight: 500;
}

.video-frame__cta {
  position: absolute;
  bottom: 18px;
  right: 18px;
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.75);
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: var(--transition);
}

.video-frame__cta:hover {
  background: var(--accent);
  color: #000;
}

.video-frame__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  font-size: 0.85rem;
  color: var(--muted);
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}

.work-card:hover img {
  transform: scale(1.05);
  filter: brightness(1.05);
}

.quote {
  border: 1px solid var(--border);
  padding: clamp(32px, 5vw, 72px);
  text-align: center;
  font-size: clamp(1.35rem, 3vw, 2.2rem);
  line-height: 1.55;
  letter-spacing: var(--tracking-tight);
  font-family: var(--font-heading);
}

.quote cite {
  display: block;
  margin-top: 16px;
  font-size: 0.8rem;
  letter-spacing: var(--tracking-wider);
  color: var(--muted);
  text-transform: uppercase;
}

footer {
  padding: 60px clamp(20px, 6vw, 100px);
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

footer h4 {
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}

footer p,
footer a {
  color: var(--muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-contact {
  margin: 8px 0 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-style: normal;
  color: var(--text);
}

.footer-contact span {
  letter-spacing: 0.08em;
  font-size: 0.88rem;
  color: var(--muted);
}

footer a:hover {
  color: var(--accent);
}

.copyright {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  margin: 8px 0 0;
}

.icp-record {
  margin-top: 12px;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
  text-decoration: none;
  color: var(--accent);
  letter-spacing: 0.2em;
  font-size: 0.8rem;
  transition: var(--transition);
  position: relative;
}

.contact-btn::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.contact-btn:hover::after {
  width: 100%;
}

.contact-btn:hover {
  gap: 16px;
  color: var(--text);
}

.divider {
  border: none;
  border-bottom: 1px solid var(--border);
  margin-block: 40px;
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--accent);
  color: #1a1a1a;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(252, 211, 77, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(252, 211, 77, 0.4);
}

.back-to-top:active {
  transform: translateY(-2px);
}

/* Cloud data loading / skeleton */
.cloud-loader {
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  justify-content: center;
  padding: clamp(24px, 4vw, 48px);
  border: 1px dashed var(--border);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.02);
  min-height: 120px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.cloud-loader--inline {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 10px;
  padding: 16px;
  border-radius: 14px;
}

.cloud-loader--stacked {
  align-items: flex-start;
}

.cloud-loader[hidden] {
  display: none;
}

.cloud-fallback {
  margin-top: 18px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.cloud-fallback[hidden] {
  display: none;
}

.skeleton-grid {
  display: grid;
  width: 100%;
  gap: 14px;
}

.skeleton-grid--works {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.skeleton-grid--team {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.skeleton-card,
.skeleton-chip {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
}

.skeleton-card {
  min-height: 150px;
  animation: skeletonPulse 1.4s linear infinite;
}

.skeleton-card--hero {
  grid-column: span 2;
  min-height: 220px;
}

.skeleton-chip {
  width: 150px;
  height: 34px;
  border-radius: 999px;
  animation: skeletonPulse 1.4s linear infinite;
}

@keyframes skeletonPulse {
  0% {
    opacity: 0.4;
    transform: translateX(-2%);
  }
  50% {
    opacity: 0.9;
    transform: translateX(0);
  }
  100% {
    opacity: 0.4;
    transform: translateX(2%);
  }
}

/* Works shared grid tweaks (archive + home + detail) */
.related-works__grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.related-works__grid .work-card {
  border-radius: 0;
  overflow: hidden;
  background: transparent;
}

/* CTA / 面板组件，供影棚 & 器材页复用 */
.cta-panel {
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: clamp(24px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  background: linear-gradient(140deg, rgba(18, 18, 18, 0.95), rgba(4, 4, 4, 0.9));
}

.cta-panel p {
  color: var(--muted);
  line-height: 1.7;
}

.cta-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.cta-list li {
  padding-left: 16px;
  position: relative;
}

.cta-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.cta-actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-self: center;
}

.cta-actions .btn {
  justify-content: center;
  text-align: center;
}

.cta-hint {
  margin: 4px 0 0;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* 通用媒体查询 */
@media (max-width: 840px) {
  .mobile-menu-toggle {
    display: flex;
  }

  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(3, 3, 3, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    padding: 80px 40px 40px;
    overflow-y: auto;
  }

  nav.active {
    right: 0;
  }

  nav ul {
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
  }

  nav a {
    font-size: 1rem;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }

  .cta-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  #site-header {
    padding: 16px 20px;
  }

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

  .related-works__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  section {
    padding: clamp(40px, 12vw, 72px) clamp(16px, 6vw, 24px);
  }

  .btn {
    padding: 12px 20px;
  }

  .section-heading {
    gap: 12px;
  }

  .section-heading span {
    letter-spacing: 0.12em;
    line-height: 1.4;
  }

  footer {
    padding: 48px clamp(16px, 6vw, 24px);
  }
}