:root {
  --accent1: oklch(0.78 0.14 195);
  --accent2: oklch(0.78 0.13 70);
  --btn-grad1: oklch(0.6 0.1 195);
  --btn-grad2: oklch(0.62 0.09 55);
  --bg: oklch(0.145 0.018 260);
  --bg-elev: oklch(0.19 0.018 260);
  --border: oklch(1 0 0 / 0.09);
  --text: oklch(0.97 0.008 260);
  --text-dim: oklch(0.72 0.015 260);
  --text-dim2: oklch(0.52 0.015 260);
  --font-display: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  /* Used only for the big hero h1 — everything else (h2/h3, logo, ring
     labels, ticker, point/port numbers) stays on --font-display. */
  --font-hero: 'Golos Text', 'Manrope', system-ui, sans-serif;
  /* The "brushed metal" sheen invertase.io uses on its own display
     type — these are their exact gradient stops (captured straight
     off their live h1), not an approximation: a light core that
     barely dims for the first half, then drops hard into a dark
     gray toward the edge. That sharp back half is what makes each
     letter read as individually lit rather than the whole line just
     looking flat white. Reused as a background, clipped to the text
     itself. */
  --sheen: radial-gradient(90% 55% at 44% 42%, rgb(226, 227, 233) 0%, rgb(212, 214, 222) 53%, rgb(61, 63, 76) 100%);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; scroll-behavior: smooth; }
body { background: #0d1014; }
a { text-decoration: none; }
button { font: inherit; }
::selection { background: oklch(0.78 0.14 195 / 0.35); }

.si-wrap {
  position: relative;
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  isolation: isolate;
}
.si-wrap h1, .si-wrap h2, .si-wrap h3 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.03em;
  /* The invertase-style sheen: a soft radial highlight clipped to the
     glyphs themselves instead of a flat --text color. Any span that
     needs its own color (like .si-accent-text below) just sets its
     own background/clip and wins by specificity. */
  background: var(--sheen);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.si-wrap p { margin: 0; }

/* ---------- background atmosphere ---------- */
.si-bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}
.si-grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, oklch(1 0 0 / 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, oklch(1 0 0 / 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 40%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* ---------- header / nav ---------- */
.si-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 40;
  backdrop-filter: blur(16px) saturate(140%);
  background: oklch(0.13 0.02 260 / 0.72);
  border-bottom: 1px solid var(--border);
}
.si-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.si-logo {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 18px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.si-logo-mark {
  width: 30px; height: 30px;
  flex: none;
  display: block;
  object-fit: contain;
}
.si-nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.si-nav-links a {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.15s ease;
}
.si-nav-links a:hover { color: var(--text); }
.si-nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}
.si-lang-switch {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px;
}
.si-lang-pill {
  appearance: none;
  background: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 6px 11px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 30px;
  opacity: 0.55;
  color: var(--text-dim);
}
.si-lang-pill.is-active {
  opacity: 1;
  color: var(--text);
  border-color: var(--accent1);
  background: oklch(1 0 0 / 0.05);
}
.si-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--btn-grad1), var(--btn-grad2));
  color: #0b0d10;
  font-weight: 700;
  font-size: 14px;
  padding: 11px 20px;
  border-radius: 999px;
  min-height: 44px;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 0 0 0 oklch(0.6 0.1 195 / 0);
}
.si-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px oklch(0.6 0.1 195 / 0.45);
}
.si-hamburger {
  display: none;
  appearance: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: none;
  color: var(--text);
}
.si-mobile-nav {
  position: fixed;
  top: 65px; left: 0; right: 0;
  z-index: 39;
  background: oklch(0.12 0.02 260 / 0.98);
  border-bottom: 1px solid var(--border);
  display: none;
  flex-direction: column;
  padding: 8px 24px 24px;
  gap: 4px;
}
.si-mobile-nav.is-open { display: flex; }
.si-mobile-nav a {
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 4px;
  border-bottom: 1px solid var(--border);
}
.si-mobile-lang {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 14px;
}
.si-mobile-lang .si-lang-pill {
  flex: 1;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 11px;
  font-size: 13px;
}
.si-mobile-lang .si-lang-pill.is-active {
  border-color: var(--accent1);
}

/* ---------- sections ---------- */
.si-section { position: relative; padding: 128px 24px; z-index: 1; }
.si-section-tight { padding-top: 72px; padding-bottom: 72px; }
.si-inner { max-width: 1200px; margin: 0 auto; position: relative; z-index: 1; }
.si-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent1);
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.si-eyebrow::before {
  content: "";
  width: 22px; height: 1.5px;
  background: var(--accent1);
}
.si-h2 { font-size: clamp(30px, 4.2vw, 46px); font-weight: 600; max-width: 720px; }
.si-lede { margin-top: 18px; font-size: 17px; line-height: 1.65; color: var(--text-dim); max-width: 620px; }
.si-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap; margin-bottom: 56px; }

/* ---------- hero ---------- */
.si-hero {
  position: relative;
  padding: 168px 24px 96px;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  z-index: 1;
}
.si-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  background: oklch(1 0 0 / 0.03);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.02em;
  margin-bottom: 28px;
  animation: si-rise 0.7s ease both;
}
.si-hero-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent1); box-shadow: 0 0 12px 2px var(--accent1); }
.si-hero h1 {
  font-family: var(--font-hero);
  font-size: clamp(40px, 7.4vw, 98px);
  font-weight: 900;
  max-width: 980px;
  letter-spacing: -0.015em;
  animation: si-rise 0.8s 0.05s ease both;
}
.si-hero h1 .si-accent-text {
  background: linear-gradient(100deg, var(--accent1), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.si-hero-sub {
  margin-top: 26px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 600px;
  animation: si-rise 0.8s 0.12s ease both;
}
.si-hero-actions {
  margin-top: 40px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  animation: si-rise 0.8s 0.18s ease both;
}
.si-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 700;
  font-size: 14px;
  padding: 11px 22px;
  border-radius: 999px;
  min-height: 44px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.si-btn-ghost:hover { border-color: var(--accent1); background: oklch(1 0 0 / 0.03); }

@keyframes si-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes si-pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }

/* ---------- hero 3D gem ---------- */
.si-gem-wrap {
  position: relative;
  margin-top: 64px;
  width: min(560px, 82vw);
  aspect-ratio: 1;
  animation: si-rise 1s 0.24s ease both;
}
.si-gem-glow {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent1) 0%, var(--accent2) 45%, transparent 72%);
  filter: blur(60px);
  opacity: 0.4;
  z-index: 0;
}
.si-gem-ring {
  position: absolute;
  inset: 0;
  border: 1px solid oklch(1 0 0 / 0.1);
  border-radius: 50%;
  z-index: 1;
}
.si-gem-ring::before {
  content: "";
  position: absolute;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent1);
  box-shadow: 0 0 14px 2px var(--accent1);
  top: -4.5px; left: calc(50% - 4.5px);
}
.si-gem-ring-2 {
  position: absolute;
  inset: 11%;
  border: 1px dashed oklch(1 0 0 / 0.14);
  border-radius: 50%;
  z-index: 1;
  animation: si-spin 34s linear infinite;
}
.si-gem-ring-2::after {
  content: "";
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent2);
  box-shadow: 0 0 10px 2px var(--accent2);
  bottom: 6%; right: 8%;
}
@keyframes si-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.si-gem-scene {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1100px;
  z-index: 2;
}
.si-gem-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 2;
}
/* WebGL scene is added by js/gem3d.js; until it confirms it can run,
   the canvas stays hidden and the CSS-only gem (.si-gem-scene) below
   is what's shown, so there's always a working fallback. */
.si-gem-wrap:not(.is-3d) .si-gem-canvas { display: none; }
.si-gem-wrap.is-3d .si-gem-scene { display: none; }
.si-gem {
  position: relative;
  width: 1px;
  height: 1px;
  transform-style: preserve-3d;
  animation: si-gem-spin 24s linear infinite;
}
@keyframes si-gem-spin {
  from { transform: rotateY(0deg) rotateX(-6deg); }
  to { transform: rotateY(360deg) rotateX(-6deg); }
}
.si-gem-facet {
  position: absolute;
  top: 50%; left: 50%;
  width: 84px; height: 84px;
  margin: -42px 0 0 -42px;
  border-radius: 22%;
  border: 1px solid oklch(1 0 0 / 0.16);
  backdrop-filter: blur(1px);
  box-shadow: inset 0 1px 1px oklch(1 0 0 / 0.35), inset 0 -10px 16px oklch(0 0 0 / 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}
.si-gem-facet::before {
  content: "";
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 28%, oklch(1 0 0 / 0.22), transparent 70%);
  pointer-events: none;
}
.si-gem-facet-icon { position: relative; filter: drop-shadow(0 1px 3px oklch(0 0 0 / 0.5)); }

/* ---------- gem side callouts (labels for each facet/service) ---------- */
.si-gem-callouts {
  position: relative;
  margin-top: 24px;
  width: max-content;
  max-width: 92vw;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
  z-index: 4;
  opacity: 0;
  animation: si-fade-in 1s 0.3s ease forwards;
}
@keyframes si-fade-in { from { opacity: 0; } to { opacity: 1; } }
.si-gem-callout {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim2);
  opacity: 0.55;
  padding: 7px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: opacity 0.5s ease, color 0.5s ease, border-color 0.5s ease, background 0.5s ease, transform 0.5s ease;
  white-space: nowrap;
}
.si-gem-callout::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
  flex: none;
}
.si-gem-callout.is-active {
  opacity: 1;
  color: var(--text);
  border-color: var(--accent1);
  background: oklch(1 0 0 / 0.04);
}
.si-gem-callout.is-active::before { background: var(--accent1); box-shadow: 0 0 10px 2px var(--accent1); }

/* ---------- gem ring annotations (desktop only) ----------
   The calm, minimal version of the invertase.io look: each product
   line has its own fixed spot on the gem's outer ring — a small pale
   marker right on the ring, its caption just beside it, no
   connecting line — and never moves. Only one is visible at a time
   (main.js / gem3d.js decide which); switching is a soft blur-
   dissolve, not a slide or a pop.

   --annot-dur is set inline (on #gemAnnotSvg / #gemAnnotLabels, by
   main.js's applyAnnotActive) every time the active one changes, so
   the dissolve itself takes exactly as long as the gem's own current
   pace of change — see gem3d.js's updateAnnotations. Entry/exit share
   that one duration; only the easing differs (ease-out arriving,
   ease-in leaving, per the UI/UX skill's rule for this kind of
   reveal), so the label reads as part of the gem's own motion instead
   of a separate animation running to its own clock. The only motion
   besides blur/opacity is a small 8px vertical drift and a touch of
   scale, kept subtle so it still reads as a dissolve, not a slide. ---- */
.si-gem-annot-svg,
.si-gem-annot-labels {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  display: none;
  --annot-dur: 0.45s;
}
.si-gem-annot-svg { overflow: visible; }

.si-annot-ping {
  fill: none;
  stroke: oklch(1 0 0 / 0.55);
  stroke-width: 0.5;
  opacity: 0;
}
.si-annot-dot {
  fill: color-mix(in srgb, var(--gem-live-color, var(--accent1)) 25%, oklch(1 0 0 / 0.85));
  opacity: 0;
  filter: blur(9px);
  transition: opacity var(--annot-dur) ease-in, filter var(--annot-dur) ease-in, fill 0.9s ease;
}
.si-annot-g.is-active .si-annot-dot {
  opacity: 1;
  filter: blur(0);
  transition: opacity var(--annot-dur) ease-out, filter var(--annot-dur) ease-out, fill 0.9s ease;
}
.si-annot-g.is-active .si-annot-ping {
  animation: si-annot-ping 2.6s ease-out infinite;
}
@keyframes si-annot-ping {
  0% { r: 1px; opacity: 0.45; }
  75%, 100% { r: 3.2px; opacity: 0; }
}

.si-annot-label {
  position: absolute;
  left: 0; top: 0;
  transform: translate(var(--tx, -50%), var(--ty, -50%)) translateY(8px) scale(1.16);
  font-family: var(--font-display);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim2);
  white-space: nowrap;
  opacity: 0;
  filter: blur(18px);
  transition: opacity var(--annot-dur) ease-in, filter var(--annot-dur) ease-in, transform var(--annot-dur) ease-in, color 0.9s ease;
}
.si-annot-label.is-active {
  opacity: 1;
  filter: blur(0);
  color: var(--text);
  transform: translate(var(--tx, -50%), var(--ty, -50%)) translateY(0) scale(1);
  transition: opacity var(--annot-dur) ease-out, filter var(--annot-dur) ease-out, transform var(--annot-dur) ease-out, color 0.9s ease;
}

@media (min-width: 1200px) {
  .si-gem-callouts { display: none; }
  .si-gem-annot-svg,
  .si-gem-annot-labels { display: block; }
}

/* ---------- corner ribbon ---------- */
.si-ribbon {
  position: absolute;
  top: 100px;
  right: max(18px, 3vw);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 9px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: oklch(1 0 0 / 0.02);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  z-index: 3;
}

/* ---------- ticker ----------
   "Depth marquee": two rows running opposite directions, tilted
   slightly in 3D so the strip reads as a receding conveyor rather
   than a flat line. Row 1 (front, bright) carries what we do; row 2
   (back, dimmer, smaller) carries why clients pick us — two
   different word lists, never the same phrase twice between them. */
.si-ticker {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: oklch(1 0 0 / 0.015);
  overflow: hidden;
  padding: 22px 0 18px;
  perspective: 900px;
}
.si-ticker-rows {
  transform-style: preserve-3d;
  transform: rotateX(7deg);
}
.si-ticker-row {
  overflow: hidden;
  padding: 6px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.si-ticker-track {
  display: flex;
  align-items: center;
  gap: 40px;
  width: max-content;
}
.si-ticker-row-1 .si-ticker-track { animation: si-ticker-left 34s linear infinite; }
.si-ticker-row-2 .si-ticker-track { animation: si-ticker-right 40s linear infinite; }
.si-ticker:hover .si-ticker-track { animation-play-state: paused; }
.si-ticker-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  white-space: nowrap;
}
.si-ticker-row-1 .si-ticker-item { font-size: 15px; font-weight: 600; color: var(--text-dim); }
.si-ticker-row-2 .si-ticker-item { font-size: 12.5px; font-weight: 500; color: var(--text-dim2); opacity: 0.72; }
.si-ticker-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--accent1); flex: none; }
.si-ticker-row-2 .si-ticker-dot { width: 4px; height: 4px; opacity: 0.7; }
@keyframes si-ticker-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@keyframes si-ticker-right {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}
@media (prefers-reduced-motion: reduce) {
  .si-ticker-track { animation: none !important; }
}

/* ---------- about ---------- */
.si-about-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.si-points { display: grid; gap: 18px; margin-top: 32px; }
.si-point { display: flex; gap: 16px; padding: 20px; border: 1px solid var(--border); border-radius: 18px; background: oklch(1 0 0 / 0.015); }
.si-point-num { font-family: var(--font-display); font-weight: 700; font-size: 13px; color: var(--accent1); flex: none; width: 30px; }
.si-point-title { font-weight: 700; font-size: 15.5px; margin-bottom: 4px; }
.si-point-text { color: var(--text-dim); font-size: 14.5px; line-height: 1.55; }

/* ---------- cards / grids ---------- */
.si-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.si-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.si-card {
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 30px;
  background: linear-gradient(160deg, oklch(1 0 0 / 0.025), oklch(1 0 0 / 0));
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.si-card:hover { border-color: oklch(0.78 0.14 195 / 0.4); transform: translateY(-3px); }
.si-card-icon {
  width: 46px; height: 46px;
  border-radius: 13px;
  display: flex; align-items: center; justify-content: center;
  background: oklch(0.78 0.14 195 / 0.12);
  margin-bottom: 20px;
}
.si-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.si-card p { color: var(--text-dim); font-size: 14.5px; line-height: 1.6; }
.si-card ul { list-style: none; margin: 16px 0 0; padding: 0; display: grid; gap: 9px; }
.si-card li { display: flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--text-dim); }
.si-card li::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent1);
  flex: none;
}

/* ---------- products (2-up feature) ---------- */
.si-feature {
  --feature-accent: var(--accent1);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 40px;
  background: oklch(1 0 0 / 0.015);
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}
.si-feature:hover {
  border-color: color-mix(in srgb, var(--feature-accent) 45%, var(--border));
  background: oklch(1 0 0 / 0.03);
  transform: translateY(-4px);
}
.si-feature-glow {
  position: absolute; width: 260px; height: 260px; border-radius: 50%;
  filter: blur(80px); opacity: 0.35; z-index: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.si-feature:hover .si-feature-glow { opacity: 0.55; }
.si-feature-badge {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border);
  background: oklch(1 0 0 / 0.03);
  border-radius: 999px;
  padding: 6px 14px 6px 10px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.04em;
  color: var(--feature-accent); text-transform: uppercase; margin-bottom: 18px;
  position: relative; z-index: 1;
}
.si-feature h3 { font-size: 24px; font-weight: 700; margin-bottom: 12px; position: relative; z-index: 1; }
.si-feature p { color: var(--text-dim); font-size: 15px; line-height: 1.65; position: relative; z-index: 1; max-width: 460px; }
.si-feature ul { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 12px; position: relative; z-index: 1; }
.si-feature li { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--text); font-weight: 600; }
.si-feature-icon {
  width: 26px; height: 26px; border-radius: 9px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--feature-accent) 16%, transparent);
  color: var(--feature-accent);
  transition: background 0.25s ease, transform 0.25s ease;
}
.si-feature:hover .si-feature-icon { background: color-mix(in srgb, var(--feature-accent) 28%, transparent); transform: translateY(-1px); }

/* ---------- portfolio ---------- */
.si-port-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.si-port-tile {
  aspect-ratio: 4/3.7;
  border-radius: 20px;
  border: 1px solid var(--border);
  padding: 22px;
  display: flex; flex-direction: column; justify-content: flex-end;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.si-port-tile:hover { transform: translateY(-4px); border-color: oklch(1 0 0 / 0.22); }
.si-port-tile-bg { position: absolute; inset: 0; opacity: 0.55; z-index: 0; }
.si-port-tile-photo {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center;
  transition: transform 0.5s ease;
}
.si-port-tile:hover .si-port-tile-photo { transform: scale(1.05); }
.si-port-tile-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, oklch(0.145 0.018 260 / 0.05) 0%, oklch(0.11 0.018 260 / 0.35) 45%, oklch(0.09 0.016 260 / 0.94) 100%);
}
.si-port-tag {
  display: inline-flex; align-items: center; width: fit-content;
  border: 1px solid oklch(1 0 0 / 0.22);
  background: oklch(0.09 0.016 260 / 0.55);
  backdrop-filter: blur(6px);
  border-radius: 999px;
  padding: 5px 12px;
  font-family: var(--font-display);
  font-size: 11px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--text-dim);
  position: relative; z-index: 2;
  margin-bottom: 14px;
}
.si-port-title { font-family: var(--font-display); font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -0.01em; position: relative; z-index: 2; margin: 0 0 8px; }
.si-port-note { font-size: 13.5px; line-height: 1.5; color: var(--text-dim); position: relative; z-index: 2; margin: 0; }
.si-port-cta-row { margin-top: 40px; display: flex; align-items: center; justify-content: center; }

/* ---------- contact ---------- */
.si-contact-card {
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 56px;
  background: linear-gradient(160deg, oklch(1 0 0 / 0.03), oklch(1 0 0 / 0));
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.si-contact-row { display: flex; align-items: center; gap: 14px; margin-top: 14px; }
.si-contact-icon { width: 38px; height: 38px; border-radius: 11px; background: oklch(1 0 0 / 0.04); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; flex: none; }
.si-contact-label { font-size: 11.5px; color: var(--text-dim2); text-transform: uppercase; letter-spacing: 0.05em; }
.si-contact-value { font-size: 15.5px; font-weight: 700; color: var(--text); }
.si-social-row { display: flex; gap: 10px; margin-top: 28px; }
.si-social-btn { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; transition: border-color 0.15s ease; }
.si-social-btn:hover { border-color: var(--accent1); }
.si-contact-visual { display: flex; align-items: center; justify-content: center; position: relative; }

.si-orbit-glow {
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle,
    oklch(0.78 0.14 195 / 0.19) 0%,
    oklch(0.78 0.14 195 / 0.165) 6%,
    oklch(0.78 0.14 195 / 0.135) 12%,
    oklch(0.78 0.14 195 / 0.105) 18%,
    oklch(0.78 0.14 195 / 0.08) 24%,
    oklch(0.78 0.14 195 / 0.06) 30%,
    oklch(0.78 0.14 195 / 0.044) 36%,
    oklch(0.78 0.14 195 / 0.031) 42%,
    oklch(0.78 0.14 195 / 0.021) 48%,
    oklch(0.78 0.14 195 / 0.013) 54%,
    oklch(0.78 0.14 195 / 0.007) 60%,
    oklch(0.78 0.14 195 / 0.003) 68%,
    transparent 78%
  );
  filter: blur(24px);
  pointer-events: none;
}
.si-orbit-glow::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjxmaWx0ZXIgaWQ9Im4iPjxmZVR1cmJ1bGVuY2UgdHlwZT0iZnJhY3RhbE5vaXNlIiBiYXNlRnJlcXVlbmN5PSIwLjkiIG51bU9jdGF2ZXM9IjIiIHN0aXRjaFRpbGVzPSJzdGl0Y2giLz48ZmVDb2xvck1hdHJpeCB0eXBlPSJzYXR1cmF0ZSIgdmFsdWVzPSIwIi8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsdGVyPSJ1cmwoI24pIi8+PC9zdmc+");
  mix-blend-mode: overlay;
  opacity: 0.05;
}
.si-orbit-scene {
  position: relative;
  width: 250px; height: 250px;
  perspective: 1100px;
  pointer-events: none;
}
.si-orbit-ring {
  position: absolute; inset: 0; margin: auto;
  border-radius: 50%;
  border: 1px solid var(--border);
  transform-style: preserve-3d;
  will-change: transform;
}
.si-orbit-ring-1 {
  width: 250px; height: 250px;
  border-color: oklch(0.78 0.14 195 / 0.4);
  box-shadow: 0 0 30px -6px oklch(0.78 0.14 195 / 0.25) inset;
  animation: si-orbit-spin-1 18s linear infinite;
}
.si-orbit-ring-2 {
  width: 178px; height: 178px;
  border-color: oklch(0.78 0.13 70 / 0.38);
  animation: si-orbit-spin-2 24s linear infinite;
}
.si-orbit-ring-3 {
  width: 112px; height: 112px;
  border-color: oklch(1 0 0 / 0.22);
  animation: si-orbit-spin-3 13s linear infinite;
}
@keyframes si-orbit-spin-1 {
  from { transform: rotateX(72deg) rotateZ(0deg); }
  to   { transform: rotateX(72deg) rotateZ(360deg); }
}
@keyframes si-orbit-spin-2 {
  from { transform: rotateX(66deg) rotateY(18deg) rotateZ(360deg); }
  to   { transform: rotateX(66deg) rotateY(18deg) rotateZ(0deg); }
}
@keyframes si-orbit-spin-3 {
  from { transform: rotateX(76deg) rotateY(-24deg) rotateZ(0deg); }
  to   { transform: rotateX(76deg) rotateY(-24deg) rotateZ(360deg); }
}
.si-orbit-dot {
  position: absolute; top: -4px; left: 50%;
  width: 8px; height: 8px; margin-left: -4px;
  border-radius: 50%;
  background: var(--accent1);
  box-shadow: 0 0 12px 3px oklch(0.78 0.14 195 / 0.65);
}
.si-orbit-ring-2 .si-orbit-dot {
  top: auto; bottom: -3.5px;
  width: 7px; height: 7px; margin-left: -3.5px;
  background: var(--accent2);
  box-shadow: 0 0 12px 3px oklch(0.78 0.13 70 / 0.6);
}
.si-orbit-ring-3 .si-orbit-dot {
  width: 6px; height: 6px; margin-left: -3px;
  background: oklch(0.97 0.008 260);
  box-shadow: 0 0 10px 2px oklch(1 0 0 / 0.5);
}
.si-orbit-core {
  position: absolute; inset: 0; margin: auto;
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
}
.si-orbit-core-dot {
  position: absolute;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, oklch(0.97 0.008 260), var(--accent1) 60%, oklch(0.78 0.14 195 / 0.4) 100%);
  box-shadow: 0 0 22px 6px oklch(0.78 0.14 195 / 0.55), 0 0 54px 18px oklch(0.78 0.14 195 / 0.18);
  animation: si-orbit-pulse 2.6s ease-in-out infinite;
}
.si-orbit-core-ping {
  position: absolute;
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 1px solid oklch(0.78 0.14 195 / 0.55);
  animation: si-orbit-ping 2.6s ease-out infinite;
}
@keyframes si-orbit-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.2); }
}
@keyframes si-orbit-ping {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(3.6); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .si-orbit-ring, .si-orbit-core-dot, .si-orbit-core-ping { animation: none !important; }
}

/* ---------- footer ---------- */
.si-footer { border-top: 1px solid var(--border); padding: 40px 24px; }
.si-footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.si-footer-tagline { font-size: 13px; color: var(--text-dim2); }
.si-footer-rights { font-size: 13px; color: var(--text-dim2); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .si-nav-links { display: none; }
  .si-hamburger { display: flex; }
  .si-about-grid { grid-template-columns: 1fr; gap: 40px; }
  .si-grid-3 { grid-template-columns: 1fr 1fr; }
  .si-grid-2 { grid-template-columns: 1fr; }
  .si-port-grid { grid-template-columns: 1fr 1fr; }
  .si-contact-card { grid-template-columns: 1fr; padding: 36px 26px; }
  .si-contact-visual { display: none; }
  .si-ribbon { display: none; }
}
@media (max-width: 600px) {
  .si-section { padding: 88px 18px; }
  .si-hero { padding-top: 140px; }
  .si-grid-3 { grid-template-columns: 1fr; }
  .si-port-grid { grid-template-columns: 1fr; }
  .si-head-row { margin-bottom: 36px; }
  .si-lang-switch { display: none; }
}