/* ============================================================
   梁小婷 · 个人作品集
   3 主题：editorial / cinematic / studio
   2 模式：dark / light
   ============================================================ */

:root {
  --accent: #ff5a2e;

  /* tokens populated by [data-theme] + [data-mode] */
  --bg: #fff;
  --bg-elev: #f6f4ef;
  --bg-card: #fff;
  --fg: #111;
  --fg-muted: #6b6b6b;
  --fg-faint: #b5b5b5;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.18);
  --hairline: rgba(0, 0, 0, 0.06);

  --font-display: "Instrument Serif", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-body: "Inter", "PingFang SC", "Helvetica Neue", system-ui, sans-serif;
  --font-serif: "Fraunces", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius-card: 4px;
  --radius-img: 0;
  --shadow-card: none;

  --measure: 68rem;
  --gutter: clamp(20px, 4vw, 56px);
}

/* ─── Theme: Editorial Mono (default) ─────────────────────── */
[data-theme="editorial"][data-mode="light"] {
  --bg: #fafaf8;
  --bg-elev: #f0eeea;
  --bg-card: #ffffff;
  --fg: #0a0a0a;
  --fg-muted: #5c5c5c;
  --fg-faint: #a8a8a4;
  --border: rgba(0, 0, 0, 0.1);
  --border-strong: rgba(0, 0, 0, 0.2);
  --hairline: rgba(0, 0, 0, 0.07);
  --radius-card: 4px;
  --radius-img: 2px;
  --shadow-card: none;
}
[data-theme="editorial"][data-mode="dark"] {
  --bg: #0c0c0c;
  --bg-elev: #161616;
  --bg-card: #141414;
  --fg: #f5f4ef;
  --fg-muted: #a3a3a3;
  --fg-faint: #5c5c5c;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.22);
  --hairline: rgba(255, 255, 255, 0.06);
  --radius-card: 4px;
  --radius-img: 2px;
  --shadow-card: none;
}

/* ─── Theme: Cinematic Dark ───────────────────────────────── */
[data-theme="cinematic"][data-mode="dark"] {
  --bg: #07070a;
  --bg-elev: #111118;
  --bg-card: #0e0e15;
  --fg: #f4f3ee;
  --fg-muted: #9a9aa8;
  --fg-faint: #4a4a58;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.2);
  --hairline: rgba(255, 255, 255, 0.05);
  --radius-card: 14px;
  --radius-img: 10px;
  --shadow-card: 0 30px 60px -30px rgba(0, 0, 0, 0.7);
}
[data-theme="cinematic"][data-mode="light"] {
  --bg: #1a1a1f;
  --bg-elev: #232329;
  --bg-card: #2a2a31;
  --fg: #f4f3ee;
  --fg-muted: #b8b8c2;
  --fg-faint: #6c6c78;
  --border: rgba(255, 255, 255, 0.1);
  --border-strong: rgba(255, 255, 255, 0.22);
  --hairline: rgba(255, 255, 255, 0.06);
  --radius-card: 14px;
  --radius-img: 10px;
  --shadow-card: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}

/* ─── Theme: Studio Light (serif, warm) ───────────────────── */
[data-theme="studio"][data-mode="light"] {
  --bg: #f6f1e8;
  --bg-elev: #ece4d2;
  --bg-card: #fdf9f0;
  --fg: #1f1a14;
  --fg-muted: #6f6353;
  --fg-faint: #b3a78f;
  --border: rgba(31, 26, 20, 0.1);
  --border-strong: rgba(31, 26, 20, 0.25);
  --hairline: rgba(31, 26, 20, 0.06);
  --radius-card: 22px;
  --radius-img: 16px;
  --shadow-card: 0 24px 50px -32px rgba(60, 40, 20, 0.35);
}
[data-theme="studio"][data-mode="dark"] {
  --bg: #1c1812;
  --bg-elev: #26201a;
  --bg-card: #221d17;
  --fg: #f4ecdc;
  --fg-muted: #a89a82;
  --fg-faint: #6a604f;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.22);
  --hairline: rgba(255, 255, 255, 0.05);
  --radius-card: 22px;
  --radius-img: 16px;
  --shadow-card: 0 28px 50px -30px rgba(0, 0, 0, 0.7);
}

/* ─── Base reset ──────────────────────────────────────────── */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

/* per-theme typography overrides */
[data-theme="editorial"] h1,
[data-theme="editorial"] h2,
[data-theme="editorial"] h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}
[data-theme="cinematic"] h1,
[data-theme="cinematic"] h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.025em;
}
[data-theme="studio"] h1,
[data-theme="studio"] h2,
[data-theme="studio"] .display {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  font-style: italic;
}

/* ─── Shared layout primitives ────────────────────────────── */
.wrap {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: clamp(80px, 12vw, 180px) 0;
  position: relative;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border);
  margin-bottom: clamp(36px, 6vw, 72px);
}
.section-head .lhs { max-width: 720px; }
.section-head h2 {
  margin: 14px 0 0;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
}
.vision-section .section-head h2 .vision-title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: inherit;
}
.vision-section .section-head h2 .vision-subline {
  display: inline-block;
  margin-top: 8px;
  font-size: 26px;
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--fg-muted);
}
#fx .section-head h2 .fx-subline {
  display: inline-flex;
  align-items: baseline;
  margin-top: 8px;
  font-size: 26px;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fg-muted);
}
#fx .section-head h2 .fx-subline-years {
  font-family: var(--font-mono);
  font-size: 1em;
  font-weight: 400;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.section-head .en {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-top: 14px;
}
.section-head .rhs {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 360px;
  text-align: left;
}
.section-head .rhs .portrait-rhs-lede {
  margin: 0;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}
@media (max-width: 720px) {
  .section-head { flex-direction: column; align-items: stretch; }
}

.acc { color: var(--accent); }

/* ─── Hero (cinematic, fullscreen video) ──────────────────── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 760px;
  width: 100%;
  overflow: hidden;
  background: hsl(201 100% 13%);
  color: #fff;
  isolation: isolate;
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  /* subtle mood */
  filter: saturate(1.05) contrast(1.02);
}
.hero-video-fallback {
  position: absolute; inset: 0;
  background:
    radial-gradient(120% 90% at 50% 30%, rgba(255,255,255,0.04), transparent 60%),
    linear-gradient(180deg, hsl(201 100% 18%) 0%, hsl(201 100% 9%) 100%);
  z-index: 0;
}
.hero-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: saturate(1.05) contrast(1.02);
  transition: opacity 0.9s ease;
}
.hero-poster.is-hidden {
  opacity: 0;
  pointer-events: none;
}
.hero-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(70% 60% at 50% 55%, rgba(0,0,0,0) 0%, rgba(0,0,0,0.35) 80%, rgba(0,0,0,0.55) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0) 28%, rgba(0,0,0,0) 70%, rgba(0,0,0,0.4) 100%);
  z-index: 1;
  pointer-events: none;
}

/* nav bar */
.hero-nav {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px clamp(20px, 4vw, 48px);
  max-width: 1480px;
  margin: 0 auto;
  color: #fff;
}
.hero-nav .logo {
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0;
  font-weight: 500;
  color: #fff;
}
.hero-nav .logo sup {
  font-size: 9px;
  margin-left: 2px;
  opacity: 0.7;
  vertical-align: super;
}
.hero-nav .menu {
  display: flex;
  gap: 32px;
  align-items: center;
}
.hero-nav .menu a {
  position: relative;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  color: rgba(255,255,255,0.6);
  transition: color 0.25s ease;
  letter-spacing: 0;
  padding-bottom: 4px;
}
.hero-nav .menu a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.hero-nav .menu a:hover,
.hero-nav .menu a.active {
  color: #fff;
}
.hero-nav .menu a:hover::after,
.hero-nav .menu a.active::after {
  transform: scaleX(1);
}
/* Hovering another item hides the default active underline */
.hero-nav .menu:hover a.active:not(:hover) {
  color: rgba(255, 255, 255, 0.6);
}
.hero-nav .menu:hover a.active:not(:hover)::after {
  transform: scaleX(0);
}
@media (max-width: 820px) {
  .hero-nav .menu { display: none; }

  .hero-eyebrow,
  .liquid-glass,
  .hero-cta-download.nav {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(0, 0, 0, 0.38);
  }
}

/* hero copy block (centered) */
.hero-copy {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: clamp(80px, 14vh, 150px) 24px clamp(110px, 18vh, 200px);
  max-width: 1200px;
  margin: 0 auto;
}
.hero-copy .sub br { display: none; }

/* hero copy — CN-only mode (no English h1) */
.hero-copy-cn {
  padding-top: clamp(40px, 7vh, 80px);
  padding-bottom: clamp(80px, 14vh, 150px);
}

/* Hero big title — AI Portrait Designer | VFX & Aesthetic Evaluation */
.hero-bigtitle {
  margin: 22px 0 0;
  padding: 0;
  font-family: var(--font-display, "Instrument Serif", "Songti SC", serif);
  font-weight: 400;
  color: #fff;
  text-wrap: balance;
  line-height: 0.96;
  letter-spacing: -0.025em;
  max-width: 18ch;
  display: grid;
  gap: 4px;
}
.hero-bigtitle .hb-row {
  display: block;
  font-size: clamp(40px, 6.2vw, 92px);
}
.hero-bigtitle .hb-row-1 em {
  font-style: italic;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
}
.hero-bigtitle .hb-div {
  display: block;
  width: 56px;
  height: 1px;
  background: rgba(255,255,255,0.55);
  margin: 12px 0 6px;
  font-size: 0;
  color: transparent;
  overflow: hidden;
}
.hero-bigtitle .hb-row-2 {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: clamp(11px, 1vw, 14px);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
  color: rgba(255,255,255,0.78);
  line-height: 1.4;
  margin-top: 6px;
}
.hero-copy-cn .sub-lead { margin-top: 28px; }
@media (max-width: 720px) {
  .hero {
    min-height: 100svh;
    min-height: 100dvh;
    height: auto;
  }
  .hero-copy.hero-copy-cn {
    height: auto !important;
    width: 100%;
    max-width: 100%;
    padding: clamp(12px, 3vh, 28px) var(--gutter) calc(88px + env(safe-area-inset-bottom, 0px));
  }
  .hero-bigtitle { max-width: none; width: 100%; }
  .hero-bigtitle .hb-row-1 {
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    font-size: clamp(24px, 6.8vw, 40px) !important;
    letter-spacing: -0.02em !important;
    line-height: 1.12 !important;
  }
  .hero-bigtitle .hb-div {
    display: none !important;
  }
  .hero-bigtitle .hb-row-2 {
    display: none;
    letter-spacing: 0.18em;
  }
  .hero-copy-cn .sub-lead {
    width: 100% !important;
    height: auto !important;
    margin: 20px 0 0 !important;
    font-size: clamp(15px, 4.1vw, 18px) !important;
    line-height: 1.6 !important;
    max-width: 100%;
  }
  .hero-copy-cn .sub-lead .sub-en {
    width: 100% !important;
    height: auto !important;
    margin-top: 14px;
    font-size: 9px !important;
    letter-spacing: 0.08em !important;
    line-height: 1.5;
  }
  .hero-eyebrow {
    height: auto !important;
    margin-bottom: 18px;
    font-size: 10px;
    letter-spacing: 0.16em !important;
    padding: 6px 12px;
  }
  .hero-nav {
    padding: 14px var(--gutter);
    gap: 12px;
  }
  .hero-nav .logo { font-size: 13px; flex-shrink: 1; min-width: 0; }
  .hero-cta-download.nav {
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 12px;
  }
  .hero-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 12px var(--gutter) calc(12px + env(safe-area-inset-bottom, 0px));
    font-size: 9px;
    letter-spacing: 0.1em;
    line-height: 1.45;
  }
  .hero-strip .scroll { align-self: flex-end; }
}
.hero-copy-cn .sub-lead {
  margin-top: 32px;
  font-size: clamp(20px, 1.8vw, 26px);
  line-height: 1.55;
  color: rgba(255,255,255,0.86);
  max-width: 38ch;
  font-weight: 300;
}
.hero-copy-cn .sub-lead br { display: inline; }
.hero-copy-cn .sub-lead strong { color: #fff; font-weight: 500; }
.hero-copy-cn .sub-lead .sub-en {
  margin-top: 22px;
  font-size: 11px;
  color: rgba(255,255,255,0.42);
}
@media (max-width: 720px) {
  .hero-copy-cn .sub-lead {
    margin-top: 20px !important;
    font-size: clamp(15px, 4.1vw, 18px) !important;
    line-height: 1.6;
    max-width: 100%;
  }
  .hero-copy-cn .sub-lead .sub-en {
    margin-top: 14px;
    font-size: 9px !important;
    letter-spacing: 0.08em !important;
    line-height: 1.5;
  }
}

/* nav download button (replaces "Begin Journey") */
.hero-cta-download.nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  white-space: nowrap;
}
.hero-cta-download.nav .dl-icon { transition: transform 0.4s cubic-bezier(0.2,0.8,0.3,1); }
.hero-cta-download.nav:hover .dl-icon { transform: translateY(2px); }

/* inline case-card section (between portrait & vision) */
.section.inline-case {
  position: relative;
  padding: 0 0 40px;
}
#case-ai-lighting.section.inline-case {
  margin-top: clamp(-56px, -6vw, -28px);
}
/* Same content width as portrait / rest of site so cover + detail align with rail above */
.section.inline-case .wrap {
  max-width: 1480px;
}
.section.inline-case .inline-case-inner { position: relative; }
.inline-case-corner {
  font-family: var(--font-mono);
  font-size: clamp(11px, 1.05vw, 13px);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  margin: 0 0 14px;
  padding: 0;
}
.inline-case-corner-main {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
}
.inline-case-corner-sep {
  color: var(--fg-faint);
  font-weight: 400;
  letter-spacing: 0.06em;
}
.inline-case-corner-sub {
  color: var(--fg);
  font-weight: 500;
  letter-spacing: 0.1em;
}
.inline-case-corner::before {
  content: "";
  display: inline-block;
  width: 32px;
  height: 2px;
  margin-right: 12px;
  margin-bottom: 4px;
  vertical-align: middle;
  background: var(--accent);
  opacity: 1;
}
.section.inline-case .deepcase { margin: 0 auto; }

/* Match project-detail horizontal inset to cover title band (cover-bottom uses 28px) */
.section.inline-case .deepcase.deepcase-h .deepcase-body {
  padding-left: 28px !important;
  padding-right: 28px !important;
  padding-top: clamp(28px, 4vw, 48px) !important;
  padding-bottom: clamp(28px, 4vw, 48px) !important;
}

/* Match portrait → 光影重塑 gap, tightened upward */
.fx-inline-case {
  margin-top: calc((clamp(80px, 12vw, 180px) + clamp(-56px, -6vw, -28px)) * 0.28 - 20px);
  margin-bottom: 40px;
}
.fx-inline-case .inline-case-corner {
  margin-bottom: 14px;
}
.fx-inline-case .deepcase { margin: 0 auto; }
.hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(56px, 9vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  color: #fff;
  margin: 0;
  max-width: 16ch;
  text-wrap: balance;
}
.hero-copy h1 em {
  font-style: italic;
  font-weight: 400;
  color: rgba(255,255,255,0.62);
}
.hero-copy .sub {
  font-family: var(--font-body);
  margin: 28px 0 0;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.65;
  color: rgba(255,255,255,0.66);
  max-width: 56ch;
  font-weight: 400;
  text-wrap: pretty;
}
.hero-copy .sub strong {
  color: rgba(255,255,255,0.95);
  font-weight: 500;
}
.hero-copy .sub-en {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.42);
}

/* liquid glass button */
.liquid-glass {
  background: rgba(255, 255, 255, 0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  color: #fff;
  transition: transform 0.3s ease;
  cursor: pointer;
}
.liquid-glass:hover { transform: scale(1.03); }
.liquid-glass::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.15) 20%,
    rgba(255,255,255,0) 40%, rgba(255,255,255,0) 60%,
    rgba(255,255,255,0.15) 80%, rgba(255,255,255,0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}
.btn-pill {
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0;
}
.btn-pill.sm  { padding: 10px 22px; font-size: 13px; }
.btn-pill.lg  { padding: 18px 38px; font-size: 15px; margin-top: 44px; }

/* download CTA — icon + label + meta */
.hero-cta-download {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.hero-cta-download .dl-icon {
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.hero-cta-download:hover .dl-icon {
  transform: translateY(2px);
}
.hero-cta-download .dl-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  padding-left: 14px;
  margin-left: 4px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}
@media (max-width: 480px) {
  .hero-cta-download .dl-meta { display: none; }
  .btn-pill.lg { padding: 16px 28px; }
}

/* fade-rise entry animations */
@keyframes fade-rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-rise        { animation: fade-rise 0.9s ease-out both; }
.animate-fade-rise-delay  { animation: fade-rise 0.9s ease-out 0.18s both; }
.animate-fade-rise-delay-2{ animation: fade-rise 0.9s ease-out 0.36s both; }
.animate-fade-rise-delay-3{ animation: fade-rise 0.9s ease-out 0.54s both; }

/* live availability strip at bottom of hero */
.hero-strip {
  position: absolute;
  z-index: 6;
  bottom: 0; left: 0; right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(20px, 4vw, 48px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  border-top: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.4) 100%);
}
.hero-strip .dot {
  display: inline-block;
  width: 7px; height: 7px;
  background: #5cf08f;
  border-radius: 50%;
  margin-right: 9px;
  vertical-align: 1px;
  box-shadow: 0 0 12px rgba(92, 240, 143, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.45); opacity: 0.55; }
}
.hero-strip .scroll {
  display: inline-flex; gap: 10px; align-items: center;
}

/* ─── About strip (after hero) ────────────────────────────── */
.about {
  padding: clamp(60px, 10vw, 140px) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
@media (max-width: 880px) {
  .about-grid { grid-template-columns: 1fr; }
}
.about-grid .eyebrow + h2 {
  margin: 18px 0 0;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  max-width: 14ch;
}
.about-body {
  font-size: clamp(17px, 1.5vw, 22px);
  line-height: 1.55;
  color: var(--fg);
  text-wrap: pretty;
}
.about-body p + p { margin-top: 1.1em; }
.about-skills {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.skill-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--fg-muted);
}
.skill-pill.hot {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ─── AI Portrait — slider compare ────────────────────────── */
/* Card width never shrinks below --pr-card-min; narrower container → fewer columns / more rows */
#portrait .wrap {
  container-type: inline-size;
  container-name: portrait;
}

.portrait-rail {
  --pr-card-min: 156px;
  --pr-gap: 18px;
  display: grid;
  gap: var(--pr-gap);
  grid-template-columns: repeat(5, minmax(var(--pr-card-min), 1fr));
  min-width: 0;
}
.portrait-rail .cmp {
  min-width: 0;
  width: 100%;
}

/* 5×min + 4×gap ≈ 852 — below this, 4 columns */
@container portrait (max-width: 851px) {
  .portrait-rail {
    grid-template-columns: repeat(4, minmax(var(--pr-card-min), 1fr));
  }
}

/* 4×min + 3×gap ≈ 678 */
@container portrait (max-width: 677px) {
  .portrait-rail {
    grid-template-columns: repeat(3, minmax(var(--pr-card-min), 1fr));
  }
}

/* 3×min + 2×gap ≈ 504 */
@container portrait (max-width: 503px) {
  .portrait-rail {
    grid-template-columns: repeat(2, minmax(var(--pr-card-min), 1fr));
  }
}

/* 2×min + 1×gap ≈ 330 */
@container portrait (max-width: 329px) {
  .portrait-rail {
    grid-template-columns: minmax(var(--pr-card-min), 1fr);
  }
}

/* Fallback when container queries unsupported: step down by viewport */
@supports not (container-type: inline-size) {
  @media (max-width: 900px) {
    .portrait-rail { grid-template-columns: repeat(4, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 700px) {
    .portrait-rail { grid-template-columns: repeat(3, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 520px) {
    .portrait-rail { grid-template-columns: repeat(2, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 360px) {
    .portrait-rail { grid-template-columns: minmax(var(--pr-card-min), 1fr); }
  }
}

.cmp {
  position: relative;
  aspect-ratio: 3 / 5;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: var(--bg-elev);
  cursor: ew-resize;
  user-select: none;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.cmp .layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.cmp .layer.before { z-index: 1; }
.cmp .layer.after  { z-index: 2; clip-path: inset(0 0 0 var(--split, 50%)); }
.cmp .handle {
  position: absolute;
  z-index: 3;
  top: 0; bottom: 0;
  left: var(--split, 50%);
  width: 2px;
  background: #fff;
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.2), 0 0 20px rgba(0,0,0,0.4);
}
.cmp .handle::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: #fff;
  transform: translate(-50%, -50%);
  box-shadow: 0 4px 16px rgba(0,0,0,0.35);
}
.cmp .handle::after {
  content: "⇆";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  color: #111;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: -1px;
  z-index: 1;
}
.cmp .lab {
  position: absolute;
  z-index: 4;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  padding: 5px 9px;
  border-radius: 3px;
}
.cmp .lab.lhs { left: 12px; }
.cmp .lab.rhs { right: 12px; }
.cmp .meta {
  position: absolute;
  z-index: 4;
  bottom: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}

/* ─── AI Vision grid ──────────────────────────────────────── */
.vision-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 18px;
}
.vision-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-img);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  aspect-ratio: 3 / 4;
  transition: transform 0.5s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.vision-card:hover { transform: translateY(-4px); }
.vision-card .img {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transition: transform 0.7s ease;
}
.vision-card:hover .img { transform: scale(1.04); }
.vision-card .info {
  position: absolute;
  inset: auto 0 0 0;
  padding: 18px 18px 16px;
  background: linear-gradient(0deg, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0) 100%);
  color: #fff;
}
.vision-card .info h4 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.vision-card .info .sub {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.8;
}
.vision-card.feature { grid-column: span 1; grid-row: span 2; aspect-ratio: auto; }
.vision-card.wide    { aspect-ratio: 1 / 1; }

@media (max-width: 980px) {
  .vision-grid { grid-template-columns: 1fr 1fr; }
  .vision-card.feature { grid-column: span 2; aspect-ratio: 4/3; grid-row: auto; }
}
@media (max-width: 600px) {
  .vision-grid { grid-template-columns: 1fr; }
  .vision-card.feature { grid-column: span 1; }
}

/* ─── Spring festival sequence ────────────────────────────── */
.spring {
  background: var(--bg-elev);
  border-radius: var(--radius-card);
  padding: clamp(36px, 5vw, 60px);
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}
@media (max-width: 880px) {
  .spring { grid-template-columns: 1fr; }
}
.spring-stage {
  position: relative;
  aspect-ratio: 3 / 4;
  background: #b81f1f;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.spring-stage .frame {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.45s ease;
}
.spring-stage .frame.on { opacity: 1; }
.spring-stage .scrub {
  position: absolute;
  bottom: 14px; left: 14px; right: 14px;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.18);
  overflow: hidden;
  z-index: 5;
}
.spring-stage .scrub i {
  display: block;
  height: 100%;
  background: #fff;
  width: 0%;
  transition: width 0.45s linear;
}
.spring-stage .badge {
  position: absolute;
  top: 14px; left: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #fff;
  padding: 5px 9px;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(6px);
  border-radius: 3px;
  z-index: 5;
}
.spring-info h3 {
  margin: 16px 0 0;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.1;
}
.spring-info .lede {
  margin-top: 18px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg-muted);
}
.spring-info dl {
  margin: 28px 0 0;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px 18px;
}
.spring-info dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  padding-top: 3px;
}
.spring-info dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--fg);
}

/* ─── Effects 4×2 ─────────────────────────────────────────── */
.effect-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
@media (max-width: 980px) { .effect-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .effect-grid { grid-template-columns: 1fr; } }

.fx {
  position: relative;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: #111;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.fx .img {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.fx .num {
  position: absolute;
  top: 10px; left: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.85);
  z-index: 2;
}
.fx .info {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 12px 12px;
  background: linear-gradient(0deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0) 100%);
  color: #fff;
  z-index: 2;
}
.fx .info h5 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.fx .info .sub {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.78;
}
.fx .live {
  position: absolute;
  top: 10px; right: 12px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: #fff;
  background: var(--accent);
  padding: 3px 6px;
  border-radius: 2px;
}

/* ─── Project case placeholder ────────────────────────────── */
.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 880px) { .case-grid { grid-template-columns: 1fr; } }
.case {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--bg-card);
  padding: clamp(28px, 4vw, 48px);
  min-height: 360px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.case:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.case::before {
  /* corner index */
  content: attr(data-idx);
  position: absolute;
  top: 24px; right: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--fg-faint);
}
.case .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.case h3 {
  margin: 18px 0 0;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.2;
  max-width: 16ch;
}
.case .lede {
  margin-top: 14px;
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 36ch;
}
.case-foot {
  margin-top: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px dashed var(--border);
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.case-foot .arrow {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--fg);
  transition: background 0.25s, color 0.25s;
}
.case:hover .arrow {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.case .placeholder-strip {
  margin-top: 24px;
  display: flex;
  gap: 6px;
}
.case .placeholder-strip i {
  flex: 1;
  height: 64px;
  border-radius: 4px;
  background: repeating-linear-gradient(45deg, var(--bg-elev), var(--bg-elev) 6px, transparent 6px, transparent 12px);
  border: 1px solid var(--hairline);
}

/* ─── Contact ─────────────────────────────────────────────── */
.contact {
  padding: clamp(80px, 12vw, 160px) 0 clamp(60px, 8vw, 100px);
  border-top: 1px solid var(--border);
}
[data-theme="studio"] .contact-head h2 { font-style: italic; }

.contact-list {
  margin-top: 0;
  border-top: none;
}
.contact-row {
  display: grid;
  grid-template-columns: 80px 1fr 2fr auto;
  gap: 24px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s, padding 0.25s;
  cursor: pointer;
}
.contact-row:hover {
  padding-left: 18px;
  padding-right: 18px;
  background: var(--bg-elev);
}
.contact-row .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}
.contact-row .label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.contact-row .value {
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.contact-row .arrow {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  transition: background 0.25s, color 0.25s, transform 0.25s;
}
.contact-row:hover .arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: rotate(-45deg);
}
@media (max-width: 720px) {
  .contact-row { grid-template-columns: 50px 1fr auto; }
  .contact-row .label { display: none; }
}

.footer {
  margin-top: 80px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-icp {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--fg-faint);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-icp:hover {
  color: var(--fg-muted);
}

/* ─── 3D scroll-marquee headline (per section big EN word) ── */
.bg-word {
  position: absolute;
  inset: auto 0 -30px 0;
  font-family: var(--font-display);
  font-size: clamp(120px, 22vw, 320px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--fg);
  opacity: 0.04;
  pointer-events: none;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}

/* ─── Theme-specific tweaks ───────────────────────────────── */
[data-theme="studio"] .case,
[data-theme="studio"] .vision-card,
[data-theme="studio"] .fx,
[data-theme="studio"] .cmp,
[data-theme="studio"] .spring-stage {
  border-radius: var(--radius-img);
}
[data-theme="cinematic"] .hero-card {
  background: rgba(7, 7, 10, 0.55);
}
[data-theme="cinematic"][data-mode="light"] .hero-card {
  background: rgba(20, 20, 25, 0.6);
}

/* ============================================================
   NEW (2026 IA refresh)
   ============================================================ */

/* ─── Art cursor (accent dot + lag ring) ───────────────────── */
html.has-art-cursor,
html.has-art-cursor body,
html.has-art-cursor a,
html.has-art-cursor button,
html.has-art-cursor .liquid-glass,
html.has-art-cursor .cmp,
html.has-art-cursor .contact-row { cursor: none; }
.art-cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9998;
  will-change: transform;
}
.art-cursor.dot {
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 14px color-mix(in oklab, var(--accent) 55%, transparent);
  z-index: 10000;
  transition:
    width 0.22s cubic-bezier(0.2, 0.7, 0.3, 1),
    height 0.22s cubic-bezier(0.2, 0.7, 0.3, 1),
    opacity 0.22s ease;
}
.art-cursor.ring {
  width: 32px;
  height: 32px;
  border: 1.5px solid color-mix(in oklab, var(--accent) 45%, transparent);
  border-radius: 50%;
  background: transparent;
  z-index: 9999;
  transition:
    width 0.3s cubic-bezier(0.2, 0.7, 0.3, 1),
    height 0.3s cubic-bezier(0.2, 0.7, 0.3, 1),
    border-color 0.3s ease,
    background 0.3s ease,
    opacity 0.3s ease;
}
html.art-cursor-hot .art-cursor.ring {
  width: 54px;
  height: 54px;
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent) 10%, transparent);
}
html.art-cursor-hot .art-cursor.dot {
  width: 5px;
  height: 5px;
}
html.art-cursor-press .art-cursor.ring {
  width: 20px;
  height: 20px;
  border-color: color-mix(in oklab, var(--accent) 70%, transparent);
  background: color-mix(in oklab, var(--accent) 18%, transparent);
}
html.art-cursor-press .art-cursor.dot {
  width: 10px;
  height: 10px;
}
[data-mode="light"] .art-cursor.dot {
  box-shadow: 0 0 12px color-mix(in oklab, var(--accent) 40%, transparent);
}

/* legacy cursor — kept hidden for compatibility */
.cursor-glow {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 440px; height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle at center,
    color-mix(in oklab, var(--accent) 40%, transparent) 0%,
    color-mix(in oklab, var(--accent) 14%, transparent) 28%,
    transparent 70%);
  filter: blur(28px);
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: screen;
  transition: opacity 0.4s ease;
  will-change: transform;
}
[data-mode="light"] .cursor-glow { mix-blend-mode: multiply; opacity: 0.35; }

/* ─── Hero particle headline canvas ───────────────────────── */
.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 4;
  pointer-events: auto;
  mix-blend-mode: screen;
  opacity: 0.85;
}
.hero-copy { z-index: 6; position: relative; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 26px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 99px;
  backdrop-filter: blur(6px);
}
.hero-eyebrow .dot {
  width: 6px; height: 6px;
  background: #5cf08f;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(92, 240, 143, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
}

/* ─── About — clean editorial layout ──────────────────────── */
.about-head {
  margin-bottom: clamp(44px, 6vw, 80px);
}
.about-utility {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}
.about-title {
  margin: 0;
  padding: 0;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--fg);
  text-wrap: balance;
}
.about-title .about-subline {
  display: inline-block;
  margin-top: 6px;
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 300;
  letter-spacing: -0.005em;
  color: var(--fg-muted);
}
.about-head .about-en-cap {
  display: block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.skill-groups { display: block; }
.skill-group {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  align-items: start;
  margin: 0;
  padding: 14px 0;
  border-top: 1px dashed var(--hairline);
}
.skill-group:first-of-type { margin-top: 0; border-top: none; padding-top: 0; }
.skill-group-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding-top: 4px;
}
.skill-group-k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0;
  background: transparent;
  border: none;
}
.skill-group-l {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.about-tagline {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  line-height: 1.6;
  white-space: nowrap;
}
.about-tagline .ldot {
  display: inline-block;
  width: 6px; height: 6px;
  background: #5cf08f;
  border-radius: 50%;
  margin: 0 6px 1px 0;
  box-shadow: 0 0 10px rgba(92, 240, 143, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}

.about-split,
.about-grid { display: none; }

/* Personal intro paragraph — full-width, hero-style */
.about-lede {
  margin-bottom: clamp(40px, 5vw, 72px);
}
.about-lede p {
  margin: 0;
  font-size: clamp(17px, 1.5vw, 22px);
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--fg);
  max-width: 677px;
  text-align: justify;
  text-align-last: left;
  text-wrap: pretty;
}
.about-lede p strong { font-weight: 500; }
.about-lede p + p,
.about-lede .about-en-text { margin-top: 18px; }
.about-lede .about-en-text {
  font-family: var(--font-body);
  font-size: clamp(13px, 1vw, 15px);
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--fg-faint);
  max-width: 677px;
  text-align: justify;
  text-align-last: left;
  hyphens: auto;
  overflow-wrap: break-word;
}

.about-stats {
  list-style: none;
  margin: 0 0 clamp(48px, 6vw, 88px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about-stats .stat {
  display: block;
  padding: 24px;
  border-right: 1px solid var(--hairline);
}
.about-stats .stat:first-child { padding-left: 0; }
.about-stats .stat:last-child {
  padding-right: 0;
  border-right: none;
}
.about-stats .stat-n {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-display, var(--font-mono));
  font-size: clamp(36px, 4.2vw, 52px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--fg);
}
.about-stats .stat-n em {
  font-style: normal;
  font-size: 0.34em;
  font-family: var(--font-mono);
  color: var(--fg-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.about-stats .stat-l {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
@media (max-width: 720px) {
  .about-stats { grid-template-columns: 1fr; }
  .about-stats .stat {
    border-right: none;
    border-bottom: 1px solid var(--hairline);
    padding: 22px 0;
  }
  .about-stats .stat:last-child { border-bottom: none; }
}

/* Mini version — compact stats strip (used under title or in top-right corner) */
.about-stats--mini {
  margin: 0;
  padding: 0;
  display: flex;
  gap: clamp(24px, 3.2vw, 48px);
  border: none;
  align-items: flex-start;
}
.about-stats--mini .stat {
  display: block;
  padding: 0;
  border: none;
  text-align: left;
}
/* Row variant — sits directly beneath the about-title */
.about-stats--row {
  margin-top: clamp(18px, 2vw, 26px);
}
.about-stats--mini .stat-n {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-display, var(--font-mono));
  font-size: clamp(18px, 1.9vw, 24px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--fg);
}
.about-stats--mini .stat-n em {
  font-size: 0.5em;
  font-style: normal;
  font-family: var(--font-mono);
  color: var(--fg-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.about-stats--mini .stat-l {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
@media (max-width: 880px) {
  .about-stats--mini {
    gap: 18px;
    flex-wrap: wrap;
  }
  .about-stats--mini .stat { text-align: left; }
}
@media (max-width: 720px) {
  .about-stats--mini .stat {
    border: none;
    padding: 0;
  }
  .about-stats--mini .stat:last-child { border-bottom: none; }
}

.about-cols {
  margin-top: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(40px, 5vw, 72px);
  align-items: start;
  position: relative;
}
.about-cols > .skill-marquee {
  padding-left: clamp(28px, 4vw, 56px);
  border-left: 1px solid var(--hairline);
}
@media (max-width: 880px) {
  .about-cols { grid-template-columns: 1fr; gap: 40px; }
  .about-cols > .skill-marquee {
    padding-left: 0;
    border-left: none;
    padding-top: 32px;
    border-top: 1px solid var(--hairline);
  }
}
@media (max-width: 880px) {
  .about-utility {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .about-tagline { white-space: normal; }
  .about-grid,
  .about-cols { grid-template-columns: 1fr; gap: 36px; }
}
.tl-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 22px;
}

.timeline-compact { margin-top: 0; border-top: none; }
.timeline-compact .t-row {
  grid-template-columns: 120px 1fr;
  padding: 14px 0;
  gap: 18px;
  border-top: 1px dashed var(--hairline);
  border-bottom: none;
  align-items: start;
}
.timeline-compact .t-row:first-of-type {
  border-top: none;
  padding-top: 0;
}
.timeline-compact .t-row:hover { padding-left: 0; padding-right: 0; background: transparent; }
.timeline-compact .t-year { padding-top: 3px; }
.timeline-compact .t-body h5 { font-size: 15px; }
.timeline-compact .t-body .t-org { margin-top: 4px; font-size: 12.5px; }

.skill-marquee { min-width: 0; }
.skill-marquee .skill-row-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 0;
}
.skill-marquee .skill-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 5px 11px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--fg);
  background: transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.skill-marquee .skill-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* legacy hidden */
.about-meta {
  display: none;
}
.about-meta-legacy .v .ldot {
  display: inline-block;
  width: 6px; height: 6px;
  background: #5cf08f;
  border-radius: 50%;
  margin-right: 6px;
  box-shadow: 0 0 10px rgba(92, 240, 143, 0.7);
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}

.timeline:not(.timeline-compact) {
  margin-top: 38px;
  border-top: 1px solid var(--border);
}
.timeline .t-row {
  display: grid;
  transition: background 0.3s ease, padding 0.3s ease;
}
.timeline:not(.timeline-compact) .t-row {
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.timeline:not(.timeline-compact) .t-row:hover { background: var(--bg-elev); padding-left: 16px; padding-right: 16px; }
.timeline .t-year {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding-top: 4px;
}
.timeline .t-body h5 {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.timeline .t-body .t-org {
  margin-top: 4px;
  font-size: 13px;
  color: var(--fg-muted);
}
.timeline .t-body p {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--fg-muted);
  max-width: 60ch;
}
@media (max-width: 720px) { .timeline .t-row { grid-template-columns: 1fr; gap: 4px; } }

.skill-stacks {
  margin-top: 32px;
  display: grid;
  gap: 14px;
}
.skill-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 18px;
  align-items: center;
  padding: 12px 0;
  border-top: 1px dashed var(--hairline);
}
.skill-row-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.skill-row-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}
.skill-row-pills .skill-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 99px;
  color: var(--fg);
  background: var(--bg);
  transition: all 0.25s ease;
}
.skill-row-pills .skill-pill:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}
@media (max-width: 720px) { .skill-row { grid-template-columns: 1fr; gap: 8px; } }

/* ─── Compare card — fancier label, transition variants ───── */
.cmp { cursor: default; }
.cmp.cmp-slider { cursor: ew-resize; }
.cmp.cmp-fade .layer.after,
.cmp.cmp-hover .layer.after { clip-path: none; transition: opacity 0.6s cubic-bezier(.2,.7,.3,1); }
.cmp.cmp-wipe .layer.after { transition: clip-path 0.4s cubic-bezier(.2,.7,.3,1); }
.cmp .cmp-bottom {
  position: absolute;
  inset: auto 0 0 0;
  padding: 16px 14px 14px;
  background: linear-gradient(0deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0) 100%);
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 10px;
  z-index: 4;
}
.cmp .cmp-label h4 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.cmp .cmp-label .en {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}
.cmp .cmp-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.75;
  flex-shrink: 0;
  white-space: nowrap;
}

/* 智能扩图素材若带底部页码条，顶对齐裁掉 */
.portrait-rail .cmp:nth-child(5) .layer {
  background-size: cover;
  background-position: center top;
}

/* Douyin FX rail — same 5-col grid as AI Portrait */
#fx-douyin {
  container-type: inline-size;
  container-name: douyin-fx;
}
.cmp.cmp-media {
  cursor: default;
}
.cmp.cmp-media .cmp-media-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
#fx-douyin .cmp.cmp-media .cmp-bottom {
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
#fx-douyin .cmp.cmp-media:hover .cmp-bottom {
  opacity: 0;
  transform: translateY(8px);
}

.cmp.cmp-media .cmp-tag-s,
#fx-minigame .fx .live.ghost {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 5;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  line-height: 1;
  color: #fff;
  background: var(--accent);
  border: none;
  padding: 5px 8px;
  border-radius: 0 0 0 6px;
  white-space: nowrap;
  pointer-events: none;
}

@container douyin-fx (max-width: 851px) {
  .fx-douyin-rail.portrait-rail {
    grid-template-columns: repeat(4, minmax(var(--pr-card-min), 1fr));
  }
}
@container douyin-fx (max-width: 677px) {
  .fx-douyin-rail.portrait-rail {
    grid-template-columns: repeat(3, minmax(var(--pr-card-min), 1fr));
  }
}
@container douyin-fx (max-width: 503px) {
  .fx-douyin-rail.portrait-rail {
    grid-template-columns: repeat(2, minmax(var(--pr-card-min), 1fr));
  }
}
@container douyin-fx (max-width: 329px) {
  .fx-douyin-rail.portrait-rail {
    grid-template-columns: minmax(var(--pr-card-min), 1fr);
  }
}
@supports not (container-type: inline-size) {
  @media (max-width: 900px) {
    .fx-douyin-rail.portrait-rail { grid-template-columns: repeat(4, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 700px) {
    .fx-douyin-rail.portrait-rail { grid-template-columns: repeat(3, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 520px) {
    .fx-douyin-rail.portrait-rail { grid-template-columns: repeat(2, minmax(var(--pr-card-min), 1fr)); }
  }
  @media (max-width: 360px) {
    .fx-douyin-rail.portrait-rail { grid-template-columns: minmax(var(--pr-card-min), 1fr); }
  }
}

/* hide drag-handle text/meta when not slider */
.cmp.cmp-fade .meta,
.cmp.cmp-hover .meta,
.cmp.cmp-wipe .meta { display: none; }
.cmp.cmp-fade .lab.rhs,
.cmp.cmp-hover .lab.rhs,
.cmp.cmp-wipe .lab.rhs { display: none; }
.cmp.cmp-fade .lab.lhs,
.cmp.cmp-hover .lab.lhs,
.cmp.cmp-wipe .lab.lhs { display: none; }

/* ─── Vision row — 5 posters, bottom gradient + info ───────── */
.vision-section .vision-row-wrap {
  margin-top: 16px;
  padding-bottom: 36px;
  overflow: visible;
}
.vision-section .vision-row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(8px, 1.2vw, 14px);
  align-items: stretch;
  width: 100%;
}
.vision-section .vision-row__card {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-img);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  z-index: 1;
  transition:
    transform 0.48s cubic-bezier(.22, 1.12, .38, 1),
    box-shadow 0.48s ease,
    z-index 0s 0.48s;
}
.vision-section .vision-row__card:hover {
  z-index: 12;
  transition:
    transform 0.48s cubic-bezier(.22, 1.12, .38, 1),
    box-shadow 0.48s ease,
    z-index 0s;
  transform: translateY(clamp(-22px, -4.5vw, -36px)) scale(1.045);
  box-shadow:
    0 32px 56px rgba(0,0,0,0.22),
    0 12px 24px rgba(0,0,0,0.12);
}
.vision-section .vision-row__img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-repeat: no-repeat;
  background-color: #121216;
  transition: transform 0.5s cubic-bezier(.2,.7,.3,1);
}
.vision-section .vision-row__card:hover .vision-row__img {
  transform: scale(1.05);
}
.vision-section .vision-row__shade {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 52%;
  background: linear-gradient(
    0deg,
    rgba(0,0,0,0.82) 0%,
    rgba(0,0,0,0.5) 50%,
    rgba(0,0,0,0) 100%
  );
  pointer-events: none;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.35s ease;
}
.vision-section .vision-row__info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 16px 14px 14px;
  color: #fff;
  text-align: left;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.35s ease;
}
.vision-section .vision-row__card:hover .vision-row__shade,
.vision-section .vision-row__card:hover .vision-row__info {
  opacity: 0;
}
/* Match #portrait .cmp-bottom label typography */
.vision-section .vision-row__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.75;
  color: #fff;
}
.vision-section .vision-row__title {
  margin: 6px 0 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: #fff;
}
.vision-section .vision-row__sub {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.4;
  opacity: 0.7;
  color: #fff;
}

@media (max-width: 980px) {
  .vision-section .vision-row {
    display: flex;
    flex-wrap: nowrap;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
    scrollbar-width: thin;
  }
  .vision-section .vision-row__card {
    flex: 0 0 clamp(150px, 36vw, 200px);
    scroll-snap-align: start;
  }
}
@media (max-width: 420px) {
  .vision-section .vision-row__card {
    flex: 0 0 min(78vw, 280px);
  }
}

/* ─── Xiaohongshu CTA ─────────────────────────────────────── */
.xhs-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: 99px;
  border: 1px solid var(--border-strong);
  font-size: 12.5px;
  color: var(--fg);
  transition: all 0.25s ease;
}
.xhs-inline:hover { background: #ff2442; color: #fff; border-color: #ff2442; }
.xhs-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #ff2442;
  box-shadow: 0 0 10px rgba(255, 36, 66, 0.7);
}
.xhs-strip {
  margin-top: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 22px 28px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-card);
  background: var(--bg-card);
  transition: background 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}
.xhs-strip:hover {
  background: #ff2442;
  color: #fff;
  border-color: #ff2442;
  transform: translateY(-3px);
}
.xhs-strip:hover .xhs-dot { box-shadow: 0 0 14px rgba(255, 255, 255, 0.5); background: #fff; }
.xhs-strip-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.xhs-strip-url {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-align: center;
}
.xhs-strip:hover .xhs-strip-url { color: rgba(255,255,255,0.85); }
.xhs-strip-arrow {
  font-size: 22px;
  transition: transform 0.3s ease;
}
.xhs-strip:hover .xhs-strip-arrow { transform: rotate(-45deg); }
@media (max-width: 720px) {
  .xhs-strip { grid-template-columns: 1fr; text-align: center; }
  .xhs-strip-label { justify-content: center; }
}

/* ─── Vision sub-blocks: AI 视觉 / AI 视频 ─────────────────── */
.vision-block--video {
  margin-top: clamp(8px, 2vw, 16px);
}
.vision-block--visual {
  margin-top: clamp(36px, 5vw, 56px);
}
.vision-block-head {
  position: relative;
  padding-bottom: 22px;
  margin-bottom: 22px;
}
.vision-block-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.vision-block-title {
  margin: 8px 0 0;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
}
.vision-block-en {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.vision-block-rule {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--border);
}
.vision-block--visual .vision-row-wrap {
  margin-top: 0;
  padding-bottom: 0;
}

/* ─── Vision featured video (click-to-play) ───────────────── */
.vision-featured-video {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
  padding: clamp(24px, 3vw, 36px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--bg-card);
}
.vision-featured-video__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.vision-featured-video__title {
  margin: 0;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--fg);
}
.vision-featured-video__title-en,
.vision-featured-video__title-cn {
  font: inherit;
  letter-spacing: inherit;
  font-weight: inherit;
  text-transform: none;
}
.vision-featured-video__title-cn {
  margin-left: 0.2em;
}
.vision-featured-video__duration {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.vision-featured-video__desc {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fg-muted);
  text-wrap: pretty;
}
.vision-featured-video__player {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-img);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0a0a0c;
}
.vision-featured-video__media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #0a0a0c;
}
.vision-featured-video__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  padding: 0;
  cursor: pointer;
  background: rgba(0, 0, 0, 0.28);
  color: #fff;
  transition: background 0.25s ease;
}
.vision-featured-video__play:hover {
  background: rgba(0, 0, 0, 0.42);
}
.vision-featured-video__play svg {
  width: clamp(52px, 8vw, 72px);
  height: clamp(52px, 8vw, 72px);
  padding: clamp(14px, 2vw, 20px);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  transition: transform 0.25s ease, background 0.25s ease;
}
.vision-featured-video__play:hover svg {
  transform: scale(1.06);
  background: rgba(255, 255, 255, 0.22);
}
.vision-featured-video__player.is-playing .vision-featured-video__media {
  object-fit: contain;
}
/* Hide native overflow menu (three dots) while keeping default controls */
.vision-featured-video__media::-webkit-media-controls-overflow-button {
  display: none;
}
.vision-featured-video__media::-internal-media-controls-overflow-button {
  display: none;
}
@media (max-width: 880px) {
  .vision-featured-video {
    grid-template-columns: 1fr;
  }
}

/* ─── Effects groups (4 sub-modules) ──────────────────────── */
.fx-groups { display: grid; gap: clamp(64px, 8vw, 110px); }
.fx-group-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 0 28px 0;
  margin-bottom: 28px;
  position: relative;
}
.fx-group-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.fx-group-head h3 {
  margin: 8px 0 0;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 600;
  letter-spacing: -0.015em;
}
.fx-group-head .en {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.fx-group-head .lede {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-muted);
  max-width: 56ch;
}
.fx-group-head .rule {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--border);
}

.fx-grid { display: grid; gap: 14px; }
.grid-duo   { grid-template-columns: repeat(2, 1fr); }
.grid-grid8 { grid-template-columns: repeat(4, 1fr); }
.grid-wide3 { grid-template-columns: 1fr; }
.grid-trio  { grid-template-columns: repeat(3, 1fr); }
.grid-stk-2col { grid-template-columns: repeat(2, 1fr); }
.grid-ops-duo  { grid-template-columns: repeat(2, 1fr); }

.fx { transition: transform 0.4s cubic-bezier(.2,.7,.3,1); }
.fx:hover { transform: translateY(-4px); }
.fx .img { transition: transform 0.7s cubic-bezier(.2,.7,.3,1); }
.fx:hover .img { transform: scale(1.06); }
.fx .live.ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* aspect tuning by group layout */
.fx.layout-duo   { aspect-ratio: 4 / 3; }
.fx-grid.grid-minigame-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(8px, 1.2vw, 14px);
  align-items: start;
}
#fx-minigame .fx.layout-minigame-row {
  aspect-ratio: auto;
  height: auto;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-img);
  overflow: hidden;
}
#fx-minigame .fx.layout-minigame-row .fx-media-img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
#fx-minigame .fx .num,
#fx-minigame .fx .live:not(.ghost) {
  display: none;
}
#fx-minigame .fx .info {
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
#fx-minigame .fx:hover .info {
  opacity: 0;
  transform: translateY(8px);
}
.fx.layout-grid8 { aspect-ratio: 9 / 16; }
.fx.layout-wide3 { aspect-ratio: 16 / 9; }
.fx.layout-trio  { aspect-ratio: 4 / 5; }
.fx.layout-stk-2col { aspect-ratio: 16 / 9; }
/* 贴纸区：单列居中，按素材原始比例展示 */
#fx-stickers .fx-grid.grid-stk-2col {
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 22px);
  width: min(100%, 920px);
  margin-inline: auto;
  justify-items: center;
}
#fx-stickers .fx.layout-stk-2col {
  aspect-ratio: auto;
  width: min(100%, 860px);
  height: auto;
}
#fx-stickers .fx .num,
#fx-stickers .fx .info,
#fx-stickers .fx .live {
  display: none;
}
#fx-stickers .fx .img {
  background-size: contain;
  background-color: var(--bg-elev);
}
#fx-stickers .fx .fx-media-img {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  background: var(--bg-elev);
  z-index: 0;
}
#fx-ops .fx-grid.grid-ops-duo {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 1.4vw, 16px);
  align-items: start;
}
.fx.layout-ops-duo  { aspect-ratio: 16 / 9; }
#fx-ops .fx .live,
#fx-ops .fx .live.ghost,
#fx-ops .fx .num {
  display: none;
}
#fx-ops .fx .info {
  pointer-events: none;
  transition: opacity 0.35s ease;
}
#fx-ops .fx:hover .info {
  opacity: 0;
}

@media (max-width: 980px) {
  .grid-grid8 { grid-template-columns: repeat(2, 1fr); }
  .grid-trio  { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid-duo, .grid-grid8, .grid-trio, .grid-minigame-row, .grid-ops-duo { grid-template-columns: 1fr; }
}

/* ─── Deepcase ─────────────────────────────────────────── */
.cases-section { background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.deepcase-stack { display: grid; gap: clamp(40px, 6vw, 72px); }
.deepcase {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  transition: border-color 0.3s ease;
}
.deepcase:hover { border-color: var(--border-strong); }
@media (max-width: 1080px) { .deepcase { grid-template-columns: 1fr; } }

/* Horizontal variant — cover on top (landscape), content stacked below */
.deepcase.deepcase-h {
  display: block;
}
.deepcase.deepcase-h .deepcase-cover {
  min-height: 0;
  aspect-ratio: 21 / 9;
  width: 100%;
}
.deepcase.deepcase-h .deepcase-cover .cover-mask {
  width: 100% !important;
}
#case-spring.deepcase-h .deepcase-cover {
  aspect-ratio: 16 / 9;
  background: var(--bg-elev);
}
#case-spring .cover-img-el {
  object-fit: contain;
  object-position: center;
}
#case-spring.deepcase:hover .cover-img-el,
#case-spring.deepcase:hover .cover-img {
  transform: none;
}
#case-ai-lighting .deepcase-cover {
  aspect-ratio: 1024 / 422;
  background: var(--bg-elev);
}
#case-ai-lighting .cover-img-el {
  object-fit: contain;
  object-position: center;
}
#case-ai-lighting.deepcase:hover .cover-img-el {
  transform: none;
}
.deepcase-cover .cover-img-el {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.deepcase.deepcase-h .deepcase-body {
  padding: clamp(28px, 4vw, 48px) !important;
  width: auto !important;
  display: grid !important;
  gap: clamp(28px, 4vw, 44px);
}
.deepcase.deepcase-h .dc-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--hairline);
}
.deepcase.deepcase-h .dc-gallery {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(10px, 1.2vw, 14px);
  margin-top: clamp(20px, 2.5vw, 28px);
  padding-bottom: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--hairline);
}
#case-spring .dc-flow-diagram {
  margin-top: 0;
  margin-bottom: 0;
}
#case-spring .dc-flow-diagram img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-img);
  border: 1px solid var(--border);
  background: var(--bg-elev);
}
#case-spring .dc-gallery {
  margin-top: -10px;
}
#case-spring .dc-meta-col .dc-val strong,
#case-spring .dc-meta-col .dc-val .stack,
#case-ai-lighting .dc-meta-col .dc-val strong,
#case-ai-lighting .dc-meta-col .dc-val .stack {
  font-family: inherit;
  font-size: clamp(14px, 1.05vw, 16px);
  line-height: 1.65;
  letter-spacing: normal;
  color: var(--fg);
}
#case-spring .dc-meta-col .dc-val strong,
#case-spring .dc-meta-col .dc-val .stack {
  font-weight: 400;
}
#case-ai-lighting .dc-meta-col .dc-val strong,
#case-ai-lighting .dc-meta-col .dc-val .stack {
  font-weight: 400;
}
.deepcase.deepcase-h .dc-gallery-item {
  position: relative;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: var(--bg-elev);
  border: 1px solid var(--border);
}
.deepcase.deepcase-h .dc-gallery-media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
#case-spring .dc-gallery-item:nth-child(5) {
  background: #0d0d0d;
}
#case-spring .dc-gallery-item:nth-child(5) .dc-gallery-media {
  object-fit: contain;
  object-position: center center;
  transform: none;
}
.deepcase.deepcase-h .dc-footer-video-block {
  margin-top: clamp(12px, 1.5vw, 20px);
}
.deepcase.deepcase-h .dc-footer-video {
  border-radius: var(--radius-img);
  overflow: hidden;
  background: #0d0d0d;
  border: 1px solid var(--border);
}
.deepcase.deepcase-h .dc-footer-video-media {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
#case-spring .dc-footer-video-block {
  margin-top: clamp(2px, 1.5vw, 10px);
}
#case-spring .dc-footer-video-caption {
  margin: 12px 0 0;
  font-size: 14px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--fg);
  text-align: left;
  text-wrap: pretty;
}
@media (max-width: 900px) {
  .deepcase.deepcase-h .dc-gallery {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 560px) {
  .deepcase.deepcase-h .dc-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.deepcase.deepcase-h .dc-intro-block .intro p {
  font-size: clamp(14px, 1.05vw, 16px);
  line-height: 1.65;
  color: var(--fg);
}
#case-spring .dc-intro-block .intro p {
  text-align: justify;
  text-justify: inter-ideograph;
}
.deepcase.deepcase-h .dc-intro-block .intro p + p { margin-top: 0.7em; }
.deepcase.deepcase-h .dc-meta-col {
  display: grid;
  gap: 18px;
  align-content: start;
  padding-left: clamp(0px, 2vw, 28px);
  border-left: 1px dashed var(--hairline);
}
/* 05 / 06 split: shared header row + aligned content row */
.deepcase.deepcase-h .dc-bottom-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 248px);
  grid-template-areas:
    "key-work key-outcomes"
    "work outcomes";
  column-gap: clamp(24px, 3vw, 40px);
  row-gap: 12px;
  align-items: start;
}
.deepcase.deepcase-h .dc-key-work { grid-area: key-work; }
.deepcase.deepcase-h .dc-key-outcomes {
  grid-area: key-outcomes;
  padding-left: clamp(20px, 2.5vw, 28px);
  border-left: 1px solid var(--hairline);
}
.deepcase.deepcase-h .dc-list-work {
  grid-area: work;
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.deepcase.deepcase-h .dc-list-work li {
  display: grid;
  align-items: start;
  padding: 16px 18px;
  gap: 16px;
  grid-template-columns: 40px 1fr;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--bg-elev);
}
.deepcase.deepcase-h .dc-list-work .dc-list-num {
  padding-top: 3px;
  flex-shrink: 0;
}
.deepcase.deepcase-h .dc-list-work .dc-list-text {
  font-size: 14px;
  line-height: 1.6;
  text-wrap: pretty;
}
.deepcase.deepcase-h .dc-stats-outcomes {
  grid-area: outcomes;
  min-width: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding-left: clamp(20px, 2.5vw, 28px);
  border-left: 1px solid var(--hairline);
  align-self: start;
}
.deepcase.deepcase-h .dc-stats-outcomes .dc-stat {
  padding: 16px 14px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--bg-elev);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.deepcase.deepcase-h .dc-stats-outcomes .dc-stat:hover {
  border-color: var(--accent);
  background: var(--bg);
}
.deepcase.deepcase-h .dc-stats-outcomes .dc-stat .v {
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--fg);
  word-break: break-word;
}
.deepcase.deepcase-h .dc-stats-outcomes .dc-stat .k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
/* Spring: only 2 outcomes — stack full width below work (no tall empty sidebar) */
#case-spring .dc-bottom-split {
  grid-template-columns: 1fr;
  grid-template-areas:
    "key-work"
    "work"
    "key-outcomes"
    "outcomes";
  row-gap: clamp(14px, 2vw, 20px);
}
#case-spring .dc-key-outcomes,
#case-spring .dc-stats-outcomes {
  padding-left: 0;
  border-left: none;
}
#case-spring .dc-key-outcomes {
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid var(--hairline);
}
#case-spring .dc-stats-outcomes {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 880px) {
  .deepcase.deepcase-h .dc-top { grid-template-columns: 1fr; }
  .deepcase.deepcase-h .dc-meta-col {
    padding-left: 0;
    border-left: none;
    padding-top: 18px;
    border-top: 1px dashed var(--hairline);
  }
  .deepcase.deepcase-h .dc-bottom-split {
    grid-template-columns: 1fr;
    grid-template-areas:
      "key-work"
      "work"
      "key-outcomes"
      "outcomes";
    row-gap: 12px;
  }
  .deepcase.deepcase-h .dc-key-outcomes,
  .deepcase.deepcase-h .dc-stats-outcomes {
    padding-left: 0;
    border-left: none;
  }
  .deepcase.deepcase-h .dc-key-outcomes {
    padding-top: clamp(20px, 3vw, 28px);
    border-top: 1px solid var(--hairline);
  }
  .deepcase.deepcase-h .dc-stats-outcomes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 520px) {
  .deepcase.deepcase-h .dc-stats-outcomes,
  #case-spring .dc-stats-outcomes {
    grid-template-columns: 1fr;
  }
}

.deepcase-cover {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  color: #fff;
}
.deepcase-cover .cover-img {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1.2s cubic-bezier(.2,.7,.3,1);
}
.deepcase:hover .cover-img { transform: scale(1.04); }
.deepcase-cover .cover-mask {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0) 35%, rgba(0,0,0,0) 60%, rgba(0,0,0,0.9) 100%);
}
.deepcase-cover .cover-meta {
  position: absolute;
  top: 24px; left: 24px; right: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
}
.deepcase-cover .cover-meta .cover-tag {
  padding: 4px 10px;
  background: var(--accent);
  color: #fff;
  border-radius: 2px;
}
.deepcase-cover .cover-bottom {
  position: absolute;
  inset: auto 0 0 0;
  padding: 28px 28px 24px;
}
.deepcase-cover h3 {
  margin: 0;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.deepcase-cover .cover-sub {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
}

.deepcase-body {
  padding: clamp(28px, 4vw, 44px);
  display: grid;
  gap: 24px;
  align-content: start;
}
.dc-block { display: grid; gap: 8px; }
.dc-key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.dc-val { font-size: 14.5px; line-height: 1.65; color: var(--fg); }
.dc-val.intro p { margin: 0 0 0.65em; color: var(--fg); font-size: 15px; }
.dc-val .stack {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}
.dc-row3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  padding: 18px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
@media (max-width: 720px) { .dc-row3 { grid-template-columns: 1fr; } }

.dc-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.dc-list li {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--bg-elev);
  transition: border-color 0.25s ease, background 0.25s ease;
}
.dc-list li:hover { border-color: var(--accent); background: var(--bg); }
.dc-list-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
}
.dc-list-text { font-size: 13.5px; line-height: 1.55; color: var(--fg); }

.dc-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 760px) { .dc-stats { grid-template-columns: repeat(2, 1fr); } }
.dc-stat {
  padding: 16px 14px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: var(--bg-elev);
  transition: border-color 0.25s, transform 0.25s;
}
.dc-stat:hover { border-color: var(--accent); transform: translateY(-2px); }
.dc-stat .k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.dc-stat .v {
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
}
[data-theme="studio"] .dc-stat .v { font-style: italic; font-family: var(--font-serif); }

/* ─── Reveal-on-scroll helper class ───────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(.2,.7,.3,1), transform 0.9s cubic-bezier(.2,.7,.3,1);
}
.reveal.is-in { opacity: 1; transform: translateY(0); }

/* ─── tiny utilities ──────────────────────────────────────── */
.kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  padding: 3px 6px;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  color: var(--fg-muted);
}
.divider {
  height: 1px;
  background: var(--border);
  margin: 0 var(--gutter);
}