/* =========================================================
   gettool · REDESIGN ADDITIONS
   расширения над dasign-system.css: объём, градиенты, плёнка
   ========================================================= */

/* ---------- new tokens: depth, gradient, grain ---------- */
:root {
  /* ambient gradient bg — soft mesh */
  --gt-mesh:
    radial-gradient(60% 50% at 12% 10%, rgba(88,104,200,0.18) 0%, transparent 60%),
    radial-gradient(50% 55% at 88% 20%, rgba(255,200,170,0.22) 0%, transparent 60%),
    radial-gradient(55% 45% at 50% 100%, rgba(195,200,235,0.30) 0%, transparent 70%),
    #FAFAF7;

  --gt-mesh-soft:
    radial-gradient(70% 80% at 10% 0%, rgba(88,104,200,0.10) 0%, transparent 60%),
    radial-gradient(60% 60% at 100% 30%, rgba(255,210,180,0.10) 0%, transparent 60%),
    #FAFAF7;

  --gt-mesh-deep:
    radial-gradient(40% 50% at 70% 30%, rgba(88,104,200,0.45) 0%, transparent 60%),
    radial-gradient(50% 60% at 20% 80%, rgba(40,52,140,0.60) 0%, transparent 60%),
    #15172A;

  /* layered depth shadows (paper-like, not flat plastic) */
  --gt-depth-sm:
    0 1px 1px rgba(20,20,26,0.04),
    0 2px 4px rgba(20,20,26,0.04),
    0 6px 12px -2px rgba(20,20,26,0.06);

  --gt-depth-md:
    0 1px 2px rgba(20,20,26,0.04),
    0 4px 10px rgba(20,20,26,0.06),
    0 16px 32px -8px rgba(20,20,26,0.10);

  --gt-depth-lg:
    0 2px 4px rgba(20,20,26,0.06),
    0 8px 20px rgba(20,20,26,0.08),
    0 32px 56px -16px rgba(20,20,26,0.14);

  --gt-depth-float:
    0 0 0 1px rgba(20,20,26,0.04),
    0 12px 32px -8px rgba(20,20,26,0.18),
    0 32px 80px -16px rgba(88,104,200,0.18);

  /* glass */
  --gt-glass: rgba(255, 255, 255, 0.62);
  --gt-glass-stroke: rgba(255, 255, 255, 0.7);
}

/* ---------- film grain (SVG noise overlay) ---------- */
.grain {
  position: relative;
}
.grain::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.7 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
  opacity: 0.06;
  mix-blend-mode: multiply;
  border-radius: inherit;
}

/* glass plate (used for island, modals, top bars) */
.glass {
  background: var(--gt-glass);
  backdrop-filter: saturate(180%) blur(28px);
  -webkit-backdrop-filter: saturate(180%) blur(28px);
  border: 1px solid var(--gt-glass-stroke);
  box-shadow: var(--gt-depth-float);
}

[data-theme="dark"] {
  --gt-glass: rgba(40, 45, 80, 0.6);
  --gt-glass-stroke: rgba(255, 255, 255, 0.10);
  --gt-mesh:
    radial-gradient(60% 50% at 12% 10%, rgba(88,104,200,0.45) 0%, transparent 60%),
    radial-gradient(50% 55% at 88% 20%, rgba(140,90,180,0.30) 0%, transparent 60%),
    radial-gradient(55% 45% at 50% 100%, rgba(60,80,160,0.40) 0%, transparent 70%),
    #15172A;
  --gt-mesh-soft:
    radial-gradient(70% 80% at 10% 0%, rgba(88,104,200,0.18) 0%, transparent 60%),
    radial-gradient(60% 60% at 100% 30%, rgba(140,90,180,0.12) 0%, transparent 60%),
    #15172A;
  --gt-depth-sm:
    0 1px 1px rgba(0,0,0,0.25),
    0 2px 4px rgba(0,0,0,0.25),
    0 6px 12px -2px rgba(0,0,0,0.35);
  --gt-depth-md:
    0 1px 2px rgba(0,0,0,0.3),
    0 4px 10px rgba(0,0,0,0.35),
    0 16px 32px -8px rgba(0,0,0,0.5);
  --gt-depth-lg:
    0 2px 4px rgba(0,0,0,0.35),
    0 8px 20px rgba(0,0,0,0.45),
    0 32px 56px -16px rgba(0,0,0,0.65);
  --gt-depth-float:
    0 0 0 1px rgba(255,255,255,0.05),
    0 12px 32px -8px rgba(0,0,0,0.6),
    0 32px 80px -16px rgba(88,104,200,0.30);
}

/* ===== animated aurora rays (dark theme only) ===== */
[data-theme="dark"] .proto-frame {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

/* body-level aurora — fixed so it doesn't break document scroll */
[data-theme="dark"] body.mesh-bg::before,
[data-theme="dark"] body.mesh-soft-bg::before {
  content: "";
  position: fixed; inset: -20vh -10vw;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(35% 30% at 25% 30%, rgba(120, 90, 220, 0.42) 0%, transparent 65%),
    radial-gradient(30% 30% at 75% 25%, rgba(88, 104, 220, 0.45) 0%, transparent 65%),
    radial-gradient(30% 28% at 60% 75%, rgba(180, 110, 200, 0.30) 0%, transparent 65%),
    radial-gradient(28% 32% at 20% 80%, rgba(70, 90, 200, 0.35) 0%, transparent 65%);
  filter: blur(40px);
  animation: auroraDrift 22s var(--gt-ease-standard) infinite alternate;
}
[data-theme="dark"] body.mesh-bg::after,
[data-theme="dark"] body.mesh-soft-bg::after {
  content: "";
  position: fixed; inset: -20vh -10vw;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(40% 25% at 65% 35%, rgba(140, 80, 200, 0.30) 0%, transparent 70%),
    radial-gradient(30% 30% at 30% 60%, rgba(80, 120, 220, 0.35) 0%, transparent 70%);
  filter: blur(60px);
  animation: auroraDrift2 28s var(--gt-ease-standard) infinite alternate;
  mix-blend-mode: screen;
}

/* proto-frame contained aurora */
[data-theme="dark"] .proto-frame::before {
  content: "";
  position: absolute; inset: -30%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(35% 30% at 25% 30%, rgba(120, 90, 220, 0.42) 0%, transparent 65%),
    radial-gradient(30% 30% at 75% 25%, rgba(88, 104, 220, 0.45) 0%, transparent 65%),
    radial-gradient(30% 28% at 60% 75%, rgba(180, 110, 200, 0.30) 0%, transparent 65%),
    radial-gradient(28% 32% at 20% 80%, rgba(70, 90, 200, 0.35) 0%, transparent 65%);
  filter: blur(40px);
  animation: auroraDrift 22s var(--gt-ease-standard) infinite alternate;
}
[data-theme="dark"] .proto-frame::after {
  content: "";
  position: absolute; inset: -30%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(40% 25% at 65% 35%, rgba(140, 80, 200, 0.30) 0%, transparent 70%),
    radial-gradient(30% 30% at 30% 60%, rgba(80, 120, 220, 0.35) 0%, transparent 70%);
  filter: blur(60px);
  animation: auroraDrift2 28s var(--gt-ease-standard) infinite alternate;
  mix-blend-mode: screen;
}

@keyframes auroraDrift {
  0%   { transform: translate(0%, 0%)   rotate(0deg); }
  50%  { transform: translate(8%, -6%)  rotate(8deg); }
  100% { transform: translate(-6%, 6%)  rotate(-8deg); }
}
@keyframes auroraDrift2 {
  0%   { transform: translate(0%, 0%)   rotate(0deg) scale(1); }
  50%  { transform: translate(-10%, 8%) rotate(-12deg) scale(1.15); }
  100% { transform: translate(10%, -10%) rotate(12deg) scale(0.95); }
}

/* mesh page background */
.mesh-bg { background: var(--gt-mesh); position: relative; }
.mesh-soft-bg { background: var(--gt-mesh-soft); position: relative; }
.mesh-deep-bg { background: var(--gt-mesh-deep); color: var(--gt-dark-ink); position: relative; }

/* =========================================================
   Top of doc — redesign hero
   ========================================================= */

.rd-doc-hero {
  min-height: 80vh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: var(--gt-sp-20) 0 var(--gt-sp-16);
}
.rd-overline { display: inline-flex; align-items: center; gap: 10px; padding: 8px 14px; border-radius: var(--gt-r-full); background: rgba(255,255,255,0.6); border: 1px solid var(--gt-line); width: fit-content; }
.rd-overline .dot { width: 6px; height: 6px; background: var(--gt-brand); border-radius: 999px; animation: rdPulse 2s var(--gt-ease-standard) infinite; }
@keyframes rdPulse { 0%,100% { opacity: 1; transform: scale(1);} 50% { opacity: .35; transform: scale(0.6);} }
.rd-doc-hero h1 {
  font-size: clamp(56px, 8vw, 124px);
  line-height: 0.92; letter-spacing: -0.045em; font-weight: 900;
  margin: var(--gt-sp-8) 0 var(--gt-sp-6); text-wrap: balance;
}
.rd-doc-hero h1 em { font-family: 'Instrument Serif', 'Times New Roman', serif; font-weight: 400; font-style: italic; letter-spacing: -0.02em; color: var(--gt-brand); }
.rd-doc-hero .lede { max-width: 60ch; font-size: 20px; line-height: 1.5; color: var(--gt-ink-secondary); margin: 0 0 var(--gt-sp-8); }

.rd-meta { display: flex; gap: var(--gt-sp-10); flex-wrap: wrap; margin-top: var(--gt-sp-8); padding-top: var(--gt-sp-6); border-top: 1px solid var(--gt-line); }
.rd-meta-cell .label { font-family: var(--gt-font-mono); font-size: 11px; color: var(--gt-ink-tertiary); text-transform: uppercase; letter-spacing: 0.06em; }
.rd-meta-cell .value { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; margin-top: 4px; }

/* =========================================================
   Section heading
   ========================================================= */

.rd-section { padding: var(--gt-sp-20) 0; border-top: 1px solid var(--gt-line); }
.rd-section-head { display: grid; grid-template-columns: 200px 1fr; gap: var(--gt-sp-12); margin-bottom: var(--gt-sp-12); }
.rd-section-num { font-family: var(--gt-font-mono); font-size: 13px; color: var(--gt-brand); padding-top: 6px; }
.rd-section-title { font-size: clamp(36px, 5vw, 56px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.04; margin: 0 0 16px; text-wrap: balance; }
.rd-section-lede  { font-size: 18px; line-height: 1.55; color: var(--gt-ink-secondary); max-width: 60ch; }
@media (max-width: 900px) { .rd-section-head { grid-template-columns: 1fr; gap: 12px; } }

/* =========================================================
   Audit grid (before / after)
   ========================================================= */

.audit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gt-sp-6); }
@media (max-width: 900px) { .audit-grid { grid-template-columns: 1fr; } }
.audit-cell {
  border-radius: var(--gt-r-xl);
  padding: var(--gt-sp-6);
  display: flex; flex-direction: column; gap: var(--gt-sp-4); min-height: 280px;
  position: relative; overflow: hidden;
}
.audit-cell .head { display: flex; align-items: center; gap: 10px; }
.audit-cell .tag { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 4px 8px; border-radius: var(--gt-r-sm); }
.audit-cell.before { background: var(--gt-surface-2); border: 1px solid var(--gt-line); }
.audit-cell.before .tag { background: rgba(20,20,26,0.08); color: var(--gt-ink-secondary); }
.audit-cell.after  { background: var(--gt-mesh-soft); border: 1px solid var(--gt-brand-100); box-shadow: var(--gt-depth-sm); }
.audit-cell.after .tag { background: var(--gt-brand-soft); color: var(--gt-brand-700); }
.audit-cell .demo { flex: 1; display: flex; align-items: center; justify-content: center; }
.audit-cell ul { margin: 0; padding-left: 18px; color: var(--gt-ink-secondary); font-size: 14px; line-height: 1.6; }

/* =========================================================
   Pillar cards
   ========================================================= */

.pillar-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--gt-sp-4); }
.pillar {
  padding: var(--gt-sp-6);
  background: var(--gt-surface);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-r-xl);
  display: flex; flex-direction: column; gap: var(--gt-sp-3);
  box-shadow: var(--gt-depth-sm);
  position: relative; overflow: hidden;
  min-height: 220px;
}
.pillar .num {
  position: absolute; top: 14px; right: 18px;
  font-family: var(--gt-font-mono); font-size: 11px; color: var(--gt-ink-tertiary);
}
.pillar .glyph { width: 36px; height: 36px; color: var(--gt-brand); margin-bottom: 6px; }
.pillar h4 { font-size: 18px; font-weight: 800; letter-spacing: -0.02em; margin: 0; }
.pillar p  { font-size: 14px; line-height: 1.55; color: var(--gt-ink-secondary); margin: 0; }

/* =========================================================
   Studio mockup — the main attraction
   ========================================================= */

.studio-frame {
  border-radius: var(--gt-r-2xl);
  overflow: hidden;
  background: var(--gt-mesh);
  position: relative;
  aspect-ratio: 16/10;
  min-height: 560px;
  box-shadow: var(--gt-depth-lg);
  border: 1px solid rgba(20,20,26,0.06);
}

/* fake browser bar */
.sf-chrome {
  height: 36px;
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gt-line);
  display: flex; align-items: center; padding: 0 16px; gap: 8px;
  font-family: var(--gt-font-mono); font-size: 12px; color: var(--gt-ink-tertiary);
  position: relative; z-index: 3;
}
.sf-chrome .dots { display: flex; gap: 6px; margin-right: 12px; }
.sf-chrome .dots span { width: 10px; height: 10px; border-radius: 99px; background: rgba(20,20,26,0.18); }
.sf-chrome .url { background: rgba(255,255,255,0.5); border-radius: var(--gt-r-sm); padding: 4px 10px; }

/* topbar */
.sf-top {
  position: absolute; top: 36px; left: 0; right: 0;
  padding: 14px 22px; display: flex; align-items: center; gap: 16px;
  z-index: 4;
}
.sf-top .brand { display: flex; align-items: center; gap: 8px; font-weight: 800; letter-spacing: -0.02em; font-size: 16px; }
.sf-top .credits { margin-left: auto; display: flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: var(--gt-r-full); background: rgba(255,255,255,0.65); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.6); font-weight: 700; font-size: 13px; }
.sf-top .credits .gem { width: 14px; height: 14px; border-radius: 4px; background: linear-gradient(135deg, var(--gt-brand) 0%, var(--gt-brand-300) 100%); transform: rotate(45deg); }
.sf-top .avatar { width: 32px; height: 32px; border-radius: var(--gt-r-full); background: var(--gt-brand-soft); border: 1px solid var(--gt-line); display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 13px; color: var(--gt-brand); }

/* vertical tab rail */
.sf-rail {
  position: absolute; left: 18px; top: 100px; bottom: 140px;
  width: 56px; padding: 8px; display: flex; flex-direction: column; gap: 4px; align-items: center;
  background: rgba(255,255,255,0.55);
  backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: var(--gt-r-xl);
  z-index: 4;
}
.sf-rail .item { width: 40px; height: 40px; border-radius: var(--gt-r-md); display: flex; align-items: center; justify-content: center; color: var(--gt-ink-secondary); cursor: pointer; transition: all 200ms var(--gt-ease-bouncy); position: relative; }
.sf-rail .item:hover { background: rgba(255,255,255,0.8); color: var(--gt-ink); }
.sf-rail .item.active { background: var(--gt-brand); color: #fff; box-shadow: var(--gt-shadow-brand); }
.sf-rail .item svg { width: 18px; height: 18px; }

/* canvas grid */
.sf-canvas {
  position: absolute; top: 100px; left: 96px; right: 24px; bottom: 140px;
  padding: 8px;
  display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 140px;
  gap: 12px; overflow: hidden;
}
.sf-tile {
  border-radius: var(--gt-r-lg);
  background: var(--gt-surface);
  border: 1px solid var(--gt-line);
  position: relative; overflow: hidden;
  box-shadow: var(--gt-depth-sm);
  transition: transform 240ms var(--gt-ease-bouncy);
}
.sf-tile:hover { transform: translateY(-3px); box-shadow: var(--gt-depth-md); }
.sf-tile .pic { position: absolute; inset: 0; background-size: cover; background-position: center; }
.sf-tile .label { position: absolute; bottom: 8px; left: 8px; right: 8px; font-size: 11px; font-weight: 600; color: rgba(255,255,255,0.95); display: flex; align-items: center; gap: 6px; padding: 4px 8px; background: rgba(20,20,26,0.36); backdrop-filter: blur(12px); border-radius: var(--gt-r-sm); }

/* skeleton + spinning mark for "generating" tile */
.sf-tile.loading {
  background: linear-gradient(135deg, var(--gt-brand-100) 0%, var(--gt-brand-soft) 100%);
  position: relative;
}
.sf-tile.loading::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.6) 50%, transparent 70%);
  animation: sfShimmer 1600ms linear infinite;
}
@keyframes sfShimmer { from { transform: translateX(-100%);} to { transform: translateX(100%);} }
.sf-tile.loading .mark {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--gt-brand); z-index: 2;
}
.sf-tile.loading .mark svg { width: 36px; height: 36px; animation: markSpin 1400ms var(--gt-ease-standard) infinite; transform-origin: 36px 36px; }

/* the island */
.sf-island {
  position: absolute; left: 50%; transform: translateX(-50%);
  bottom: 24px;
  width: min(720px, calc(100% - 48px));
  border-radius: var(--gt-r-xl);
  z-index: 5;
  padding: 16px 18px 14px;
  background: var(--gt-glass);
  backdrop-filter: saturate(180%) blur(28px);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: var(--gt-depth-float);
}
.sf-island .prompt-row { display: flex; align-items: center; gap: 10px; padding: 6px 4px 12px; border-bottom: 1px dashed rgba(20,20,26,0.12); }
.sf-island .ref-add { width: 36px; height: 36px; border-radius: var(--gt-r-md); background: rgba(255,255,255,0.7); border: 1px dashed rgba(20,20,26,0.18); color: var(--gt-ink-secondary); display: flex; align-items: center; justify-content: center; cursor: pointer; }
.sf-island .ref-add:hover { color: var(--gt-brand); border-color: var(--gt-brand); }
.sf-island .prompt-text { flex: 1; font-size: 15px; color: var(--gt-ink); padding: 6px 0; }
.sf-island .prompt-text .blinker { display: inline-block; width: 2px; height: 16px; background: var(--gt-brand); vertical-align: middle; animation: blink 800ms steps(2,end) infinite; margin-left: 2px; }
@keyframes blink { 50% { opacity: 0; } }

.sf-island .controls-row { display: flex; align-items: center; gap: 8px; padding-top: 10px; }
.sf-island .pchip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px; background: rgba(255,255,255,0.7); border: 1px solid rgba(20,20,26,0.06);
  border-radius: var(--gt-r-full); font-weight: 700; font-size: 12px; color: var(--gt-ink);
  cursor: pointer; transition: all 180ms var(--gt-ease-bouncy);
}
.sf-island .pchip:hover { background: #fff; transform: translateY(-1px); box-shadow: var(--gt-depth-sm); }
.sf-island .pchip.model { padding-left: 6px; }
.sf-island .pchip .swatch { width: 22px; height: 22px; border-radius: var(--gt-r-sm); background: linear-gradient(135deg, #FDD9B0 0%, #FFB088 100%); }

.sf-island .go {
  margin-left: auto;
  padding: 10px 22px;
  border: 0; cursor: pointer;
  border-radius: var(--gt-r-full);
  background: linear-gradient(135deg, #6B7CD8 0%, #4555B8 100%);
  color: #fff; font-weight: 800; letter-spacing: -0.01em; font-size: 13px;
  box-shadow: var(--gt-shadow-brand);
  transition: all 220ms var(--gt-ease-bouncy);
  display: inline-flex; align-items: center; gap: 8px;
}
.sf-island .go:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -8px rgba(88,104,200,0.55); }
.sf-island .go::after { content: "→"; display: inline-block; transition: transform 200ms var(--gt-ease-bouncy); }
.sf-island .go:hover::after { transform: translateX(3px); }

/* drifting logo behind the canvas (ambient) */
.sf-drift {
  position: absolute; right: -60px; top: 40%; transform: translateY(-50%);
  color: rgba(88,104,200,0.10);
  pointer-events: none;
  animation: sfDrift 18s var(--gt-ease-standard) infinite alternate;
}
.sf-drift svg { width: 360px; height: 360px; }
@keyframes sfDrift { from { transform: translate(0,-50%) rotate(-6deg);} to { transform: translate(-40px,-50%) rotate(6deg);} }

/* =========================================================
   Animation gallery
   ========================================================= */

.anim-gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gt-sp-4); }
.anim-card {
  background: var(--gt-surface);
  border: 1px solid var(--gt-line);
  border-radius: var(--gt-r-xl);
  padding: var(--gt-sp-5);
  box-shadow: var(--gt-depth-sm);
  display: flex; flex-direction: column; gap: 12px;
  min-height: 280px;
}
.anim-stage {
  position: relative;
  height: 180px;
  border-radius: var(--gt-r-lg);
  background: var(--gt-mesh-soft);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.anim-name { font-weight: 800; font-size: 15px; letter-spacing: -0.01em; }
.anim-desc { font-size: 12px; color: var(--gt-ink-secondary); font-family: var(--gt-font-mono); }

/* specific animation styles */
.a-pop { animation: aPop 1600ms var(--gt-ease-bouncy) infinite; }
@keyframes aPop {
  0%, 60%, 100% { transform: scale(0); opacity: 0; }
  20%, 50% { transform: scale(1); opacity: 1; }
}

.a-spin-mark svg { width: 56px; height: 56px; color: var(--gt-brand); animation: markSpin 1400ms var(--gt-ease-standard) infinite; transform-origin: 36px 36px; }

.a-reveal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; width: 80%; }
.a-reveal-grid .cell { aspect-ratio: 1; border-radius: 6px; background: var(--gt-brand); opacity: 0; animation: aReveal 2200ms var(--gt-ease-bouncy) infinite; }
.a-reveal-grid .cell:nth-child(1) { animation-delay: 0ms; }
.a-reveal-grid .cell:nth-child(2) { animation-delay: 80ms; }
.a-reveal-grid .cell:nth-child(3) { animation-delay: 160ms; }
.a-reveal-grid .cell:nth-child(4) { animation-delay: 240ms; }
.a-reveal-grid .cell:nth-child(5) { animation-delay: 320ms; }
.a-reveal-grid .cell:nth-child(6) { animation-delay: 400ms; }
.a-reveal-grid .cell:nth-child(7) { animation-delay: 480ms; }
.a-reveal-grid .cell:nth-child(8) { animation-delay: 560ms; }
.a-reveal-grid .cell:nth-child(9) { animation-delay: 640ms; }
@keyframes aReveal {
  0% { opacity: 0; transform: scale(0.7) translateY(8px); }
  35%, 70% { opacity: 1; transform: scale(1) translateY(0); }
  100% { opacity: 0; transform: scale(0.95) translateY(-4px); }
}

.a-counter { font-size: 64px; font-weight: 900; letter-spacing: -0.04em; color: var(--gt-brand); display: flex; align-items: baseline; gap: 6px; }
.a-counter .small { font-size: 18px; font-weight: 700; color: var(--gt-ink-secondary); }
.a-counter-tick { display: inline-block; animation: aTick 2000ms steps(1) infinite; }
@keyframes aTick {
  0%   { content: "247"; }
  25%  { content: "248"; }
  50%  { content: "249"; }
  75%  { content: "250"; }
  100% { content: "251"; }
}

.a-drift-mark { color: var(--gt-brand); animation: aDriftMark 6s var(--gt-ease-standard) infinite alternate; }
@keyframes aDriftMark { from { transform: translateY(-6px) rotate(-4deg); } to { transform: translateY(6px) rotate(4deg); } }
.a-drift-mark svg { width: 80px; height: 80px; }

.a-burst { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); }
.a-burst .dot {
  position: absolute; left: 50%; top: 50%;
  width: 6px; height: 6px; border-radius: 99px; background: var(--gt-brand);
  animation: aBurst 1600ms var(--gt-ease-standard) infinite;
}
.a-burst .dot:nth-child(1) { --tx: 40px; --ty: -40px; }
.a-burst .dot:nth-child(2) { --tx: -40px; --ty: -40px; }
.a-burst .dot:nth-child(3) { --tx: 50px; --ty: 0; }
.a-burst .dot:nth-child(4) { --tx: -50px; --ty: 0; }
.a-burst .dot:nth-child(5) { --tx: 30px; --ty: 40px; }
.a-burst .dot:nth-child(6) { --tx: -30px; --ty: 40px; }
@keyframes aBurst {
  0% { transform: translate(-50%,-50%) translate(0,0); opacity: 1; }
  100% { transform: translate(-50%,-50%) translate(var(--tx), var(--ty)); opacity: 0; }
}

.a-progress { width: 80%; height: 6px; border-radius: 99px; background: var(--gt-surface-2); overflow: hidden; position: relative; }
.a-progress::after {
  content: ""; position: absolute; left: 0; top: 0; height: 100%;
  background: linear-gradient(90deg, var(--gt-brand-300), var(--gt-brand-600));
  border-radius: 99px;
  animation: aProgress 2400ms var(--gt-ease-standard) infinite;
}
@keyframes aProgress {
  0% { width: 0%; transform: translateX(0); }
  60% { width: 100%; transform: translateX(0); }
  100% { width: 100%; transform: translateX(101%); }
}

.a-typing { font-family: var(--gt-font-mono); font-size: 14px; color: var(--gt-ink); }
.a-typing .caret { display: inline-block; width: 2px; height: 14px; background: var(--gt-brand); vertical-align: middle; animation: blink 700ms steps(2) infinite; }

/* checkmark draw */
.a-check svg { width: 80px; height: 80px; color: var(--gt-success); }
.a-check path { stroke-dasharray: 60; stroke-dashoffset: 60; animation: aCheck 1800ms var(--gt-ease-bouncy) infinite; }
@keyframes aCheck {
  0% { stroke-dashoffset: 60; }
  40% { stroke-dashoffset: 0; }
  90% { stroke-dashoffset: 0; opacity: 1;}
  100% { stroke-dashoffset: 0; opacity: 0;}
}

/* card lift on hover */
.a-lift { width: 160px; height: 100px; background: var(--gt-surface); border-radius: var(--gt-r-md); box-shadow: var(--gt-depth-sm); display: flex; align-items: center; justify-content: center; font-weight: 700; transition: all 280ms var(--gt-ease-bouncy); cursor: pointer; }
.a-lift:hover { transform: translateY(-8px) scale(1.03); box-shadow: var(--gt-depth-lg); }

/* page transition (slide) */
.a-pages { position: absolute; inset: 0; }
.a-pages .page {
  position: absolute; inset: 0;
  padding: 20px; color: #fff; font-weight: 800; font-size: 24px;
  display: flex; align-items: flex-end;
  background: var(--gt-brand);
  animation: aPages 6s var(--gt-ease-standard) infinite;
}
.a-pages .page:nth-child(2) { animation-delay: 2s; background: linear-gradient(135deg, #2A347A, var(--gt-brand)); }
.a-pages .page:nth-child(3) { animation-delay: 4s; background: linear-gradient(135deg, var(--gt-brand-300), var(--gt-brand-700)); }
@keyframes aPages {
  0%, 25% { transform: translateY(0); }
  33%, 100% { transform: translateY(-100%); }
}

/* =========================================================
   Style stack (depth/gradient/glass demos)
   ========================================================= */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--gt-sp-4); }
.stack-card {
  height: 180px; border-radius: var(--gt-r-lg);
  display: flex; align-items: flex-end; padding: 16px;
  font-size: 13px; font-weight: 700; letter-spacing: -0.01em;
  position: relative; overflow: hidden;
}
.stack-card.mesh { background: var(--gt-mesh); color: var(--gt-ink); }
.stack-card.mesh-deep { background: var(--gt-mesh-deep); color: var(--gt-dark-ink); }
.stack-card.glass-on-mesh {
  background: var(--gt-mesh);
}
.stack-card.glass-on-mesh::before {
  content: ""; position: absolute; inset: 24px;
  background: var(--gt-glass); backdrop-filter: blur(28px);
  border: 1px solid var(--gt-glass-stroke); border-radius: var(--gt-r-md);
}
.stack-card.grain-paper {
  background: #FAFAF7; color: var(--gt-ink);
  box-shadow: var(--gt-depth-md);
}
.stack-card.depth-lift {
  background: var(--gt-surface); color: var(--gt-ink);
  box-shadow: var(--gt-depth-lg);
}

/* =========================================================
   Roadmap timeline
   ========================================================= */

.rm-timeline { position: relative; padding-left: 32px; }
.rm-timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: var(--gt-line); }
.rm-phase { position: relative; padding-bottom: var(--gt-sp-10); }
.rm-phase:last-child { padding-bottom: 0; }
.rm-phase::before { content: ""; position: absolute; left: -28px; top: 6px; width: 18px; height: 18px; border-radius: 99px; background: var(--gt-brand); box-shadow: 0 0 0 4px var(--gt-bg), 0 0 0 5px var(--gt-line); }
.rm-phase .when { font-family: var(--gt-font-mono); font-size: 11px; color: var(--gt-ink-tertiary); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 4px; }
.rm-phase h4 { font-size: 22px; font-weight: 800; letter-spacing: -0.02em; margin: 0 0 8px; }
.rm-phase p { color: var(--gt-ink-secondary); margin: 0 0 8px; max-width: 60ch; line-height: 1.55; }
.rm-phase .items { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.rm-phase .items .tag { padding: 4px 10px; border-radius: var(--gt-r-full); background: var(--gt-surface-2); border: 1px solid var(--gt-line); font-size: 12px; font-weight: 600; color: var(--gt-ink); }

/* =========================================================
   Misc
   ========================================================= */

.callout {
  margin-top: var(--gt-sp-10);
  padding: 28px;
  border-radius: var(--gt-r-xl);
  background: var(--gt-mesh-soft);
  border: 1px solid var(--gt-brand-100);
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
  position: relative; overflow: hidden;
}
.callout strong { font-weight: 800; }
.callout .q { font-size: 20px; line-height: 1.4; font-weight: 600; letter-spacing: -0.015em; max-width: 56ch; }
.callout .q em { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--gt-brand); }

@media (max-width: 800px) {
  .sf-canvas { grid-template-columns: repeat(2, 1fr); }
  .sf-island { width: calc(100% - 24px); }
}