/* =============================================================================
   x-studio.css · Aurelia Design Studio (Agent B)
   Builds on site.css tokens (--gold, --ink, --card, --line …) for every html[data-part].
   The stage is always a velvet display case (dark), tinted per part.
   ============================================================================= */
.xs { --stage-a: #0c1230; --stage-b: #03050d; --stage-glow: rgba(255, 228, 170, .22); --stage-ink: #efe6d2; --stage-mut: rgba(239, 230, 210, .62); --stage-line: rgba(236, 204, 140, .2); }
html[data-part="afternoon"] .xs { --stage-a: #1a1428; --stage-b: #07050c; --stage-glow: rgba(255, 214, 140, .26); }
html[data-part="evening"] .xs { --stage-a: #2a1324; --stage-b: #0b0509; --stage-glow: rgba(255, 170, 140, .22); --stage-line: rgba(255, 190, 165, .2); }
html[data-part="closed"] .xs { --stage-a: #0d1638; --stage-b: #02040b; --stage-glow: rgba(160, 190, 255, .16); }

/* ------------------------------------------------------------ hero */
.xs-hero { padding: clamp(28px, 4.5vw, 64px) 0 clamp(16px, 2.4vw, 28px); }
.xs-hero-in { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(20px, 4vw, 56px); align-items: end; }
.xs-hero h1 { font-size: clamp(2.4rem, 5.2vw, 4.6rem); max-width: 14ch; }
.xs-hero .lede { margin-top: 18px; }
.xs-hero-r { justify-self: end; width: min(100%, 420px); }
.xs-rates { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.xs-rate { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 2px 10px; padding: 10px 14px; border-radius: 14px; background: color-mix(in srgb, var(--card) 70%, transparent); border: 1px solid var(--line); }
.xs-rate b { font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; color: var(--gold-text); font-weight: 500; }
.xs-rate em { font-style: normal; font-size: 1rem; color: var(--ink); text-align: right; }
.xs-rate i { grid-column: 1 / -1; font-style: normal; font-family: var(--mono); font-size: .68rem; }
.xs-rate-label { margin: 10px 2px 0; font-size: .7rem; letter-spacing: .06em; color: var(--mut); }

/* ------------------------------------------------------------ presets rail */
.xs-start { display: flex; align-items: center; gap: 14px; margin-bottom: clamp(18px, 2.4vw, 28px); }
.xs-start-l { flex: none; font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--mut); }
.xs-presets { display: flex; gap: 10px; overflow-x: auto; padding: 6px 2px 10px; scroll-snap-type: x proximity; scrollbar-width: thin; min-width: 0; flex: 1; mask-image: linear-gradient(90deg, #000 92%, transparent); -webkit-mask-image: linear-gradient(90deg, #000 92%, transparent); }
.xs-preset { flex: none; scroll-snap-align: start; display: inline-flex; align-items: center; gap: 10px; padding: 6px 16px 6px 6px; border-radius: 999px; border: 1px solid var(--line2); background: var(--card); color: var(--ink); font-size: .86rem; transition: border-color .25s, transform .25s var(--ease), box-shadow .25s; }
.xs-preset:hover { border-color: var(--gold); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.xs-preset b { font-weight: 500; white-space: nowrap; }
.xs-pthumb { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; overflow: hidden; flex: none; background: radial-gradient(circle at 50% 35%, var(--stage-a), var(--stage-b)); color: var(--gold-hi); }
.xs-pthumb img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.25); }
.xs-surprise .xs-pthumb { background: linear-gradient(135deg, var(--gold-hi), var(--gold), var(--gold-lo)); color: #1a1306; }

/* ------------------------------------------------------------ studio grid */
.xs-studio { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(18px, 2.6vw, 36px); align-items: start; padding-bottom: clamp(40px, 6vw, 80px); }
.xs-left { display: grid; gap: 16px; }
@media (min-width: 981px) and (min-height: 720px) {
  .xs-left { position: sticky; top: calc(var(--head-h) + 14px); }
  .xs-stage { height: clamp(330px, calc(100vh - var(--head-h) - 380px), 600px); }
}

/* ------------------------------------------------------------ the stage (velvet display case) */
.xs-stage { position: relative; border-radius: var(--r-xl); overflow: hidden; isolation: isolate; min-height: 330px; height: 460px; color: var(--stage-ink);
  background: radial-gradient(120% 90% at 50% 0%, var(--stage-a), var(--stage-b) 72%); box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .55), inset 0 0 0 1px rgba(255, 255, 255, .04); }
.xs-stage::before { content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none; z-index: 5;
  background: linear-gradient(140deg, rgba(255, 240, 210, .5), rgba(236, 204, 140, .18) 30%, transparent 55%, rgba(236, 204, 140, .3) 85%, rgba(255, 255, 255, .35));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.xs-stage-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.xs-cone { position: absolute; left: 50%; top: -12%; width: 78%; height: 100%; transform: translateX(-50%); background: radial-gradient(50% 70% at 50% 0%, var(--stage-glow), transparent 72%); filter: blur(2px); }
.xs-grid-floor { position: absolute; left: -20%; right: -20%; bottom: -6%; height: 46%; transform: perspective(420px) rotateX(64deg); transform-origin: 50% 100%; opacity: .5;
  background-image: linear-gradient(var(--stage-line) 1px, transparent 1px), linear-gradient(90deg, var(--stage-line) 1px, transparent 1px); background-size: 38px 38px;
  -webkit-mask-image: radial-gradient(60% 80% at 50% 100%, #000, transparent 75%); mask-image: radial-gradient(60% 80% at 50% 100%, #000, transparent 75%); animation: xsFloor 14s linear infinite; }
@keyframes xsFloor { to { background-position: 0 38px, 0 0; } }
.xs-orbit { position: absolute; left: 50%; top: 50%; width: min(84%, 520px); aspect-ratio: 1; transform: translate(-50%, -50%); border-radius: 50%; border: 1px dashed rgba(236, 204, 140, .14); animation: xsSpin 80s linear infinite; }
.xs-orbit::after { content: ""; position: absolute; top: -3px; left: 50%; width: 6px; height: 6px; border-radius: 50%; background: var(--gold-hi); box-shadow: 0 0 14px 3px rgba(255, 220, 150, .6); }
@keyframes xsSpin { to { transform: translate(-50%, -50%) rotate(360deg); } }
.xs-stage-cv { position: absolute; inset: 0; z-index: 1; }
#xs-canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; cursor: grab; touch-action: pan-y; outline: none; }
#xs-canvas.grab { cursor: grabbing; }
#xs-canvas:focus-visible { box-shadow: inset 0 0 0 2px var(--gold-hi); border-radius: var(--r-xl); }
.xs-scan { position: absolute; inset: 0; pointer-events: none; opacity: 0; background: linear-gradient(180deg, transparent 0%, rgba(150, 220, 255, 0) 40%, rgba(170, 225, 255, .22) 49%, rgba(255, 255, 255, .55) 50%, rgba(170, 225, 255, .18) 51%, transparent 60%); background-size: 100% 240%; }
.xs-scan.go { animation: xsScan 1s var(--ease-out) 1; }
@keyframes xsScan { 0% { opacity: 1; background-position: 0 100%; } 100% { opacity: 0; background-position: 0 -40%; } }
.xs-hud { position: absolute; left: 18px; right: 18px; z-index: 3; display: flex; align-items: center; justify-content: space-between; gap: 10px; pointer-events: none; font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase; color: var(--stage-mut); }
.xs-hud .hud { color: var(--stage-mut); }
.xs-hud-t { top: 16px; }
.xs-hud-b { bottom: 62px; }
.xs-hud-price { font-size: .82rem; letter-spacing: .04em; color: var(--stage-ink); padding: 6px 12px; border-radius: 999px; background: rgba(0, 0, 0, .35); border: 1px solid rgba(236, 204, 140, .28); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); text-transform: none; }
.xs-hud-price b { font-weight: 500; color: #f6dfa4; }
.xs-hud-spec { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xs-hud-wt { flex: none; color: #f6dfa4; }
.xs-tools { position: absolute; left: 12px; right: 12px; bottom: 12px; z-index: 4; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.xs-views { display: inline-flex; padding: 3px; border-radius: 999px; background: rgba(0, 0, 0, .38); border: 1px solid rgba(255, 255, 255, .1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.xs-views button, .xs-tbtn { border: 0; background: transparent; color: var(--stage-mut); min-height: 34px; padding: 0 12px; border-radius: 999px; font-size: .78rem; font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.xs-views button[aria-pressed="true"] { background: linear-gradient(135deg, #f6e2ac, #c9a052); color: #1a1306; }
.xs-views button:hover, .xs-tbtn:hover { color: #fff; }
.xs-tbtn { background: rgba(0, 0, 0, .38); border: 1px solid rgba(255, 255, 255, .1); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.xs-tbtn[aria-pressed="true"] { color: #f6dfa4; border-color: rgba(236, 204, 140, .45); }
#xs-shot { margin-left: auto; }
.xs-drag-hint { position: absolute; top: 48px; left: 0; right: 0; text-align: center; margin: 0; z-index: 2; font-size: .72rem; color: var(--stage-mut); pointer-events: none; opacity: .8; }
.xs-stage.is-wire { background: radial-gradient(120% 90% at 50% 0%, #0a1a33, #01040c 72%); }
.xs-stage.is-wire .xs-grid-floor { opacity: .9; background-size: 22px 22px; }
.xs-stage.is-wire .xs-cone { opacity: .25; }

/* ------------------------------------------------------------ estimate card */
.xs-est { padding: clamp(16px, 2vw, 22px); }
.xs-est-h { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.xs-est-h .kick { margin: 0 0 4px; font-size: .64rem; }
.xs-total { display: block; font-size: clamp(2rem, 3.2vw, 2.6rem); line-height: 1; font-weight: 500; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.xs-delta { display: inline-flex; align-items: center; gap: 4px; margin-top: 6px; font-family: var(--mono); font-size: .7rem; }
.xs-meta { display: flex; gap: 18px; margin: 0; }
.xs-meta div { display: grid; gap: 2px; text-align: right; }
.xs-meta dt { font-family: var(--mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--mut); }
.xs-meta dd { margin: 0; font-size: 1rem; color: var(--ink); }
.xs-bar { display: flex; height: 8px; border-radius: 99px; overflow: hidden; margin: 14px 0 10px; background: var(--line); gap: 2px; }
.xs-bar i { display: block; min-width: 0; transition: flex-basis .5s var(--ease); }
.xs-b-metal { background: linear-gradient(90deg, var(--gold-lo), var(--gold), var(--gold-hi)); }
.xs-b-making { background: #8a7fb8; }
.xs-b-stone { background: linear-gradient(90deg, #9fd8ff, #e7f6ff, #ffd5ec); }
.xs-b-gst { background: color-mix(in srgb, var(--mut) 70%, transparent); }
.xs-rows { display: grid; gap: 2px; }
.xs-row { display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 6px 0; border-bottom: 1px dashed var(--line); }
.xs-row:last-child { border-bottom: 0; }
.xs-row span { display: grid; min-width: 0; line-height: 1.3; }
.xs-row b { font-weight: 500; font-size: .88rem; }
.xs-row small { color: var(--mut); font-size: .74rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xs-row em { font-style: normal; font-size: .9rem; }
.xs-dot { width: 10px; height: 10px; border-radius: 3px; transform: rotate(45deg); }
.xs-est-fine { margin: 10px 0 12px; }
.xs-est-act { display: flex; flex-wrap: wrap; gap: 8px; }
.xs-est-act .btn small { opacity: .7; font-size: .7rem; }
.xs-vars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: 12px; }
.xs-vslot { position: relative; display: grid; justify-items: center; gap: 2px; padding: 8px 6px 10px; border-radius: 14px; border: 1px solid var(--line); background: color-mix(in srgb, var(--card) 70%, transparent); text-align: center; font-size: .78rem; min-width: 0; }
.xs-vslot.is-empty { border-style: dashed; color: var(--faint); min-height: 74px; align-content: center; }
.xs-vslot span { font-weight: 500; }
.xs-vslot small { color: var(--mut); font-size: .72rem; }
.xs-vload { border: 0; padding: 0; background: radial-gradient(circle at 50% 35%, var(--stage-a), var(--stage-b)); width: 64px; height: 64px; border-radius: 50%; overflow: hidden; }
.xs-vload img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.2); transition: transform .3s var(--ease); }
.xs-vload:hover img { transform: scale(1.35); }
.xs-vdel { position: absolute; top: 4px; right: 4px; width: 26px; height: 26px; border-radius: 50%; border: 0; background: transparent; color: var(--mut); display: grid; place-items: center; }
.xs-vdel:hover { background: color-mix(in srgb, var(--bad) 14%, transparent); color: var(--bad); }

/* ------------------------------------------------------------ configurator panel */
.xs-panel { display: grid; gap: 14px; }
.xs-mod { position: relative; padding: clamp(16px, 2vw, 22px); border-radius: var(--r-lg); background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.xs-mod-h { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; min-width: 0; }
.xs-no { flex: none; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; font-family: var(--mono); font-size: .72rem; color: var(--gold-text); border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent); background: radial-gradient(circle, color-mix(in srgb, var(--gold) 12%, transparent), transparent 70%); }
.xs-mod-h h3 { font-size: 1.28rem; }
.xs-out { margin-left: auto; min-width: 0; font-family: var(--mono); font-size: .74rem; color: var(--mut); text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xs-free { flex: none; font-family: var(--mono); font-size: .62rem; letter-spacing: .12em; text-transform: uppercase; padding: 3px 8px; border-radius: 99px; background: color-mix(in srgb, var(--ok) 14%, transparent); color: color-mix(in srgb, var(--ok) 80%, var(--ink)); }
.xs-sub { margin-top: 14px; }
.xs-sub h4 { font-family: var(--mono); font-size: .66rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mut); font-weight: 500; margin: 0 0 8px; }
.xs-grid { display: grid; gap: 8px; }
.xs-g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.xs-g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.xs-g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.xs-g5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.xs-g6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.xs-g8 { grid-template-columns: repeat(8, minmax(0, 1fr)); }

/* option tile (native radio inside) */
.xs-opt { position: relative; display: block; min-width: 0; cursor: pointer; }
.xs-opt input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; z-index: 1; }
.xs-opt-in { position: relative; display: grid; justify-items: center; align-content: start; gap: 3px; height: 100%; padding: 12px 8px 10px; border-radius: 16px; border: 1px solid var(--line); text-align: center;
  background: linear-gradient(180deg, color-mix(in srgb, var(--card2) 80%, transparent), var(--card)); transition: border-color .2s, box-shadow .25s, transform .25s var(--ease), background .25s; overflow: hidden; }
.xs-opt-in::after { content: ""; position: absolute; inset: -40% -60%; background: linear-gradient(100deg, transparent 40%, rgba(255, 252, 240, .45) 50%, transparent 60%); transform: translateX(-60%); transition: transform .8s var(--ease); pointer-events: none; }
.xs-opt:hover .xs-opt-in { border-color: color-mix(in srgb, var(--gold) 60%, transparent); transform: translateY(-1px); }
.xs-opt:hover .xs-opt-in::after { transform: translateX(60%); }
.xs-opt input:checked + .xs-opt-in { border-color: var(--gold); background: linear-gradient(180deg, color-mix(in srgb, var(--gold) 14%, var(--card)), var(--card)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--gold) 22%, transparent), 0 12px 26px -16px color-mix(in srgb, var(--gold) 90%, transparent); }
.xs-opt input:checked + .xs-opt-in::before { content: "\F26E"; font-family: "bootstrap-icons"; position: absolute; top: 6px; right: 8px; font-size: .9rem; color: var(--gold-text); }
.xs-opt input:focus-visible + .xs-opt-in { outline: 2px solid var(--gold); outline-offset: 2px; }
.xs-opt input:disabled { cursor: not-allowed; }
.xs-opt.is-off .xs-opt-in { opacity: .42; filter: grayscale(.6); }
.xs-opt-in b { font-weight: 550; font-size: .88rem; line-height: 1.2; color: var(--ink); }
.xs-opt-in small { color: var(--mut); font-size: .72rem; line-height: 1.25; }
.xs-opt-in em { font-style: normal; font-size: .72rem; color: var(--gold-text); }
.xs-opt-in svg { width: 40px; height: 40px; color: var(--gold-text); }
.xs-type .xs-opt-in svg { width: 48px; height: 48px; }
.xs-sw { width: 34px; height: 34px; border-radius: 50%; box-shadow: inset 0 1px 2px rgba(255, 255, 255, .8), inset 0 -2px 4px rgba(0, 0, 0, .25), 0 3px 8px -2px rgba(0, 0, 0, .3); margin-bottom: 2px; }
.xs-stone .xs-opt-in { grid-template-columns: auto minmax(0, 1fr); justify-items: start; text-align: left; align-items: center; column-gap: 10px; padding: 10px 12px; }
.xs-stone .xs-opt-in b, .xs-stone .xs-opt-in small { grid-column: 2; }
.xs-stone .xs-opt-in .xs-gem { grid-row: 1 / span 2; }
.xs-gem { width: 28px; height: 28px; clip-path: polygon(50% 0, 100% 38%, 82% 100%, 18% 100%, 0 38%); display: block; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .5); }
.xs-shape .xs-opt-in { padding: 8px 4px; }
.xs-shape .xs-opt-in svg { width: 34px; height: 34px; }
.xs-shape .xs-opt-in b { font-size: .72rem; font-weight: 500; }
.xs-prof .xs-opt-in b { font-size: .76rem; }
.xs-seg { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 6px; }
.xs-q .xs-opt-in { padding: 9px 8px; }
.xs-q .xs-opt-in b { font-size: .86rem; }
.xs-note { margin: 10px 0 0; font-size: .78rem; color: var(--mut); }
.xs-note i { color: var(--gold-text); margin-right: 4px; }
.xs-mono { font-family: var(--mono); font-feature-settings: "tnum" 1; }

/* ranges */
.xs-range { display: flex; align-items: center; gap: 14px; }
.xs-range output { flex: none; min-width: 9.5em; text-align: right; font-size: .8rem; color: var(--ink); }
.xs-range input[type="range"] { flex: 1; min-width: 0; }
.xs input[type="range"] { -webkit-appearance: none; appearance: none; height: 28px; background: transparent; cursor: pointer; }
.xs input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 99px; background: linear-gradient(90deg, var(--gold-lo), var(--gold), var(--gold-hi)); }
.xs input[type="range"]::-moz-range-track { height: 4px; border-radius: 99px; background: linear-gradient(90deg, var(--gold-lo), var(--gold), var(--gold-hi)); }
.xs input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -9px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff, var(--gold-hi) 40%, var(--gold)); border: 1px solid var(--gold-lo); box-shadow: 0 2px 10px -2px color-mix(in srgb, var(--gold) 80%, transparent); transform: rotate(45deg); }
.xs input[type="range"]::-moz-range-thumb { width: 22px; height: 22px; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #fff, var(--gold-hi) 40%, var(--gold)); border: 1px solid var(--gold-lo); }
.xs input[type="range"]:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; border-radius: 8px; }
.xs-ticks { display: flex; justify-content: space-between; font-family: var(--mono); font-size: .62rem; color: var(--faint); margin-top: 2px; padding-right: 10.4em; }

/* size */
.xs-size { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.xs-step { width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line2); background: var(--card); display: grid; place-items: center; }
.xs-step:hover { border-color: var(--gold); }
.xs-size-sel select { min-height: 44px; padding: 0 40px 0 16px; border-radius: 999px; border: 1px solid var(--line2); background-color: var(--card); color: var(--ink); font-weight: 500; }
.xs-size-read { display: grid; margin-left: auto; text-align: right; font-size: .78rem; color: var(--mut); }
.xs-size-read span:first-child { color: var(--ink); font-size: .92rem; }

/* engraving */
.xs-eng { display: grid; gap: 10px; }
.xs-field { display: grid; gap: 6px; }
.xs-field span { font-family: var(--mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mut); }
.xs-field input { min-height: 48px; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--line2); background: var(--card); color: var(--ink); font-size: 1rem; }
.xs-field input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 4px color-mix(in srgb, var(--gold) 20%, transparent); }
.xs-sym { display: flex; gap: 6px; flex-wrap: wrap; }
.xs-sym button { min-width: 40px; height: 36px; border-radius: 10px; border: 1px solid var(--line2); background: var(--card); font-size: 1rem; }
.xs-sym button:hover { border-color: var(--gold); color: var(--gold-text); }
.xs-fonts .xs-opt-in b { font-size: 1.2rem; font-weight: 400; }
.xs-eng-prev { border-radius: 16px; padding: 12px 12px 8px; background: radial-gradient(120% 120% at 50% 0%, var(--stage-a), var(--stage-b)); text-align: center; overflow: hidden; }
.xs-eng-prev svg { width: 100%; height: auto; display: block; }
.xs-eng-prev small { display: block; color: var(--stage-mut); font-size: .72rem; margin-top: 2px; }
.xs-eng-sweep { animation: xsEngSweep 4.5s var(--ease) infinite; }
@keyframes xsEngSweep { 0% { transform: translateX(0); } 60%, 100% { transform: translateX(680px); } }

/* ------------------------------------------------------------ send / confirmation */
.xs-send { padding-bottom: clamp(40px, 6vw, 72px); scroll-margin-top: calc(var(--head-h) + 12px); }
.xs-send-in { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: clamp(20px, 4vw, 56px); padding: clamp(22px, 3.4vw, 44px); }
.xs-send-t h2 { font-size: clamp(1.9rem, 3.4vw, 2.8rem); margin-bottom: 14px; }
.xs-steps { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 10px; }
.xs-steps li { display: flex; gap: 12px; align-items: flex-start; font-size: .92rem; color: var(--ink2); }
.xs-steps i { color: var(--gold-text); font-size: 1.1rem; margin-top: 1px; }
.xs-form { display: grid; gap: 14px; align-content: start; }
.xs-fgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.xs-next { border: 0; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.xs-next legend { width: 100%; font-size: .78rem; font-family: var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mut); margin-bottom: 6px; }
.xs-next label { position: relative; cursor: pointer; }
.xs-next input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.xs-next span { display: inline-flex; align-items: center; gap: 7px; min-height: 42px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line2); background: var(--card); font-size: .9rem; transition: all .2s; }
.xs-next input:checked + span { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.xs-next input:focus-visible + span { outline: 2px solid var(--gold); outline-offset: 2px; }
.xs-form [aria-invalid="true"] { border-color: var(--bad) !important; box-shadow: 0 0 0 4px color-mix(in srgb, var(--bad) 16%, transparent) !important; }
.xs-err { color: var(--bad); font-size: .86rem; margin: 0; min-height: 1.2em; }
.xs-done { grid-column: 2; }
.xs-done-card { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 20px; align-items: start; animation: xsRise .7s var(--ease-out); }
@keyframes xsRise { from { opacity: 0; transform: translateY(16px) scale(.98); } to { opacity: 1; transform: none; } }
.xs-done-img { position: relative; border-radius: 20px; overflow: hidden; background: #070a14; }
.xs-done-img img { display: block; width: 100%; height: auto; }
.xs-seal { position: absolute; right: 10px; top: 10px; width: 84px; height: 84px; color: #f6dfa4; animation: xsSeal 1.1s var(--ease-out) .2s both; }
.xs-seal svg { width: 100%; height: 100%; }
@keyframes xsSeal { from { opacity: 0; transform: scale(1.6) rotate(-40deg); } to { opacity: 1; transform: none; } }
.xs-done-body h3 { font-size: clamp(1.4rem, 2.2vw, 1.9rem); margin-bottom: 10px; }
.xs-done-body h3:focus { outline: none; }
.xs-kick { font-family: var(--mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--ok); margin: 0 0 6px; }
.xs-done-dl { display: grid; gap: 6px; margin: 12px 0 16px; }
.xs-done-dl div { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 10px; font-size: .88rem; padding-bottom: 6px; border-bottom: 1px dashed var(--line); }
.xs-done-dl dt { color: var(--mut); font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; padding-top: 3px; }
.xs-done-dl dd { margin: 0; }
.xs-done-dl dd small { color: var(--mut); font-family: var(--sans); }
.xs-done-act { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.xs-done-act .btn { min-height: 42px; padding: 0 16px; font-size: .9rem; }
.xs-fine { font-size: .76rem; color: var(--mut); margin: 0; }
.xs-send-in:has(.xs-done:not([hidden])) { grid-template-columns: 1fr; }
.xs-send-in:has(.xs-done:not([hidden])) .xs-send-t { display: none; }
.xs-send-in:has(.xs-done:not([hidden])) .xs-done { grid-column: 1; }
.xs-fi { font-size: 1.5rem; color: var(--gold-text); display: block; margin-bottom: 12px; }
.xs-faq h3 { margin-bottom: 8px; }

/* ------------------------------------------------------------ compare dialog */
.xs-cmp { width: min(1040px, calc(100% - 24px)); max-height: calc(100vh - 40px); padding: 0; border: 1px solid var(--line2); border-radius: var(--r-lg); background: var(--card); color: var(--ink); box-shadow: var(--shadow); overflow: auto; }
.xs-cmp::backdrop { background: rgba(5, 8, 20, .62); backdrop-filter: blur(6px); }
.xs-cmp[open] { animation: xsRise .4s var(--ease-out); }
.xs-cmp-in { padding: clamp(16px, 2.6vw, 28px); }
.xs-cmp-in header { position: relative; padding-right: 50px; margin-bottom: 18px; }
.xs-cmp-in header h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.xs-cmp-in header p { color: var(--mut); font-size: .82rem; margin: 6px 0 0; }
.xs-x { position: absolute; top: 0; right: 0; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line2); background: var(--card); display: grid; place-items: center; }
.xs-cmp-grid { display: grid; grid-template-columns: minmax(110px, .7fr) repeat(var(--n), minmax(150px, 1fr)); overflow-x: auto; }
.xs-cmp-grid > div { padding: 9px 10px; border-bottom: 1px solid var(--line); font-size: .86rem; min-width: 0; }
.xs-cmp-k { color: var(--mut); font-family: var(--mono); font-size: .7rem !important; letter-spacing: .08em; text-transform: uppercase; }
.xs-cmp-k.diff, .xs-cmp-v.diff { background: color-mix(in srgb, var(--gold) 8%, transparent); }
.xs-cmp-v.diff { color: var(--ink); font-weight: 500; }
.xs-cmp-hd { display: grid; justify-items: center; gap: 4px; text-align: center; border-bottom: 1px solid var(--line2) !important; }
.xs-cmp-hd img { width: 100%; max-width: 200px; aspect-ratio: 32 / 26; object-fit: cover; border-radius: 14px; background: radial-gradient(circle at 50% 35%, var(--stage-a, #0c1230), var(--stage-b, #03050d)); }
.xs-cmp-total { font-size: 1.05rem; }
.xs-cmp-total.best { color: var(--ok); }
.xs-cmp-total em { font-style: normal; font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; padding: 2px 6px; border-radius: 99px; background: color-mix(in srgb, var(--ok) 14%, transparent); }
.xs-cmp-act { border-bottom: 0 !important; display: grid; }
.xs-cmp-act .btn { min-height: 40px; font-size: .86rem; }

/* ------------------------------------------------------------ responsive */
@media (max-width: 1180px) {
  .xs-g8 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xs-g6 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .xs-hero-in { grid-template-columns: 1fr; }
  .xs-hero-r { justify-self: stretch; width: 100%; }
  .xs-rates { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xs-studio { grid-template-columns: minmax(0, 1fr); }
  .xs-left { display: contents; }
  .xs-stage { order: 1; position: sticky; top: var(--head-h); z-index: 20; height: clamp(270px, 46vw, 420px); }
  .xs-right { order: 2; }
  .xs-est { order: 3; }
  .xs-send-in { grid-template-columns: 1fr; }
  .xs-done { grid-column: 1; }
}
@media (max-width: 640px) {
  .xs-hero h1 { font-size: clamp(2.1rem, 9vw, 2.8rem); }
  .xs-rates { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xs-start { flex-direction: column; align-items: stretch; gap: 6px; }
  .xs-stage { height: 280px; border-radius: 22px; margin-inline: -4px; }
  .xs-hud { left: 12px; right: 12px; }
  .xs-hud-b { bottom: 54px; }
  .xs-hud-spec { display: none; }
  .xs-hud-b { justify-content: flex-end; }
  .xs-drag-hint { display: none; }
  .xs-tools { left: 8px; right: 8px; bottom: 8px; gap: 6px; flex-wrap: nowrap; }
  .xs-views button { padding: 0 9px; font-size: .72rem; min-height: 32px; }
  .xs-tbtn { padding: 0 10px; min-height: 34px; }
  .xs-tbtn span:not(.sr) { display: none; }
  .xs-g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xs-g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xs-g5 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .xs-g2 { grid-template-columns: minmax(0, 1fr); }
  .xs-g8 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .xs-mod-h h3 { font-size: 1.12rem; }
  .xs-range { flex-wrap: wrap; gap: 4px; }
  .xs-range output { min-width: 0; width: 100%; text-align: left; order: -1; }
  .xs-ticks { padding-right: 0; }
  .xs-size-read { margin-left: 0; width: 100%; text-align: left; }
  .xs-fgrid { grid-template-columns: minmax(0, 1fr); }
  .xs-done-card { grid-template-columns: minmax(0, 1fr); }
  .xs-est-h { display: grid; }
  .xs-meta div { text-align: left; }
  .xs-vars { gap: 6px; }
  .xs-vload { width: 52px; height: 52px; }
  .xs-est-act .btn { flex: 1 1 auto; }
}
@media (prefers-reduced-motion: reduce) {
  .xs-grid-floor, .xs-orbit, .xs-eng-sweep { animation: none !important; }
  .xs-scan { display: none; }
}