/* ============================================================
   Interlockcup — styles
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,opsz,wght@0,6..96,400;0,6..96,500;0,6..96,600;0,6..96,700;0,6..96,800;0,6..96,900;1,6..96,400;1,6..96,500&family=Hanken+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* one warm premium accent — cognac / amber / bronze */
  --neon: #d98c52;            /* luminous amber — glows, fills, primary CTA */
  --neon-deep: #9c5a2b;       /* burnt umber — accent text on light surfaces */
  --neon-soft: rgba(217, 140, 82, 0.14);

  --ink: #16110c;
  --ink-2: #463f37;
  --ink-3: #7a7268;

  --paper: #f4f1ec;           /* warm porcelain */
  --paper-2: #ebe6dd;

  --night: #0c0a08;           /* warm deep black */
  --night-2: #14110d;
  --night-3: #1c1813;
  --mist: #a39a8e;            /* warm gray on dark */
  --mist-2: #6b6258;

  --serif: 'Bodoni Moda', Georgia, serif;
  --sans: 'Hanken Grotesk', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* centered brochure frame */
  --frame-max: 1460px;          /* outer framed canvas */
  --frame-pad: clamp(12px, 3vw, 46px);  /* gutter from frame rail to panels */
  --content-max: 1120px;        /* central content column inside a panel */
  --panel-gap: clamp(16px, 2.6vw, 38px);
  --panel-radius: clamp(20px, 2vw, 34px);

  --maxw: 1280px;
  --pad: clamp(20px, 5vw, 80px);
  --hair-light: rgba(22, 17, 12, 0.12);
  --hair-dark: rgba(255, 255, 255, 0.12);
  --rail-line: rgba(22, 17, 12, 0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--neon); color: #2a1a0e; }

a { color: inherit; text-decoration: none; }

/* ---------- centered brochure frame ---------- */
.frame {
  position: relative;
  max-width: var(--frame-max);
  margin: 0 auto;
  background: var(--paper);
  padding: clamp(84px, 9vh, 104px) var(--frame-pad) var(--panel-gap);
  /* vertical rail lines marking the central column */
  border-left: 1px solid var(--rail-line);
  border-right: 1px solid var(--rail-line);
  overflow: clip;
}
/* faint secondary inner rails echoing the reference framing */
.frame::before,
.frame::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--rail-line);
  opacity: 0.5;
  pointer-events: none;
  z-index: 1;
}
.frame::before { left: var(--frame-pad); }
.frame::after  { right: var(--frame-pad); }
@media (max-width: 760px) {
  .frame { border-left: none; border-right: none; padding-left: 0; padding-right: 0; }
  .frame::before, .frame::after { display: none; }
}

/* ---------- shared layout ---------- */
.section {
  position: relative;
  overflow: hidden;
  border-radius: var(--panel-radius);
  margin-bottom: var(--panel-gap);
}
.section:last-of-type { margin-bottom: 0; }
.wrap {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(56px, 7vw, 104px) clamp(26px, 5vw, 76px);
  z-index: 2;
}
.shader-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

/* theme blocks — light sits on the frame paper, dark floats as a panel */
.theme-light { background: transparent; color: var(--ink); }
.theme-dark  {
  background: var(--night);
  color: #f3efe7;
  box-shadow: 0 30px 80px -50px rgba(10, 11, 13, 0.55);
}
/* hairline ring on light panels so contained sections read as framed cards */
.theme-light.panel { background: rgba(255, 255, 255, 0.5); border: 1px solid var(--hair-light); }

/* cursor spotlight on dark panels — makes each card surface feel alive */
.theme-dark::after,
.footer::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(460px 460px at var(--spotx, 50%) var(--spoty, -30%), rgba(255, 255, 255, 0.07), transparent 62%);
  opacity: 0;
  transition: opacity 0.55s ease;
  pointer-events: none;
  z-index: 1;
}
.theme-dark.spotlit::after,
.footer.spotlit::after { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .theme-dark::after, .footer::after { display: none; }
}

@media (max-width: 760px) {
  .section { border-radius: 18px; }
}

/* ---------- eyebrows / labels ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  background: var(--neon);
  border-radius: 1px;
  box-shadow: 0 0 12px var(--neon);
  transform: rotate(45deg);
}
.theme-light .eyebrow { color: var(--ink-2); }
.theme-dark .eyebrow  { color: var(--mist); }

/* ---------- headlines ---------- */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.0; letter-spacing: -0.015em; }
.display {
  font-size: clamp(48px, 8.5vw, 132px);
  line-height: 0.92;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.h-xl { font-size: clamp(38px, 5.6vw, 84px); line-height: 0.98; }
.h-lg { font-size: clamp(30px, 3.8vw, 56px); line-height: 1.0; }
.italic { font-style: italic; font-weight: 400; }
em { font-style: italic; }
.lead {
  font-family: var(--sans);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.55;
  font-weight: 400;
  max-width: 46ch;
}
.theme-light .lead { color: var(--ink-2); }
.theme-dark .lead { color: var(--mist); }
.text-neon { color: var(--neon); }

/* ---------- nav (floating centered pill within the frame) ---------- */
.nav {
  position: fixed;
  top: 14px; left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  width: min(calc(100% - 24px), calc(var(--frame-max) - 2 * var(--frame-pad)));
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 12px 20px;
  background: rgba(244, 245, 244, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--hair-light);
  border-radius: 100px;
  box-shadow: 0 10px 34px -22px rgba(10, 11, 13, 0.45);
  transition: padding 0.4s ease, background 0.4s ease, top 0.4s ease, box-shadow 0.4s ease;
  color: var(--ink);
}
.nav.scrolled { top: 10px; background: rgba(244, 245, 244, 0.9); box-shadow: 0 14px 40px -24px rgba(10, 11, 13, 0.5); }
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--mono); font-weight: 600; letter-spacing: 0.04em; font-size: 15px; }
.brand-mark {
  width: 22px; height: 22px;
  position: relative;
  flex: none;
}
.brand-mark span {
  position: absolute; width: 13px; height: 13px;
  border: 1.5px solid var(--neon-deep);
  border-radius: 50%;
}
.brand-mark span:nth-child(1) { left: 0; top: 4px; }
.brand-mark span:nth-child(2) { right: 0; top: 4px; box-shadow: 0 0 10px var(--neon-soft); }
.nav-links { display: flex; align-items: center; gap: 26px; flex-wrap: nowrap; position: absolute; left: 50%; transform: translateX(-50%); }
.nav-links a { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.04em; color: var(--ink-2); transition: color 0.25s; white-space: nowrap; }
.nav-links a:hover { color: var(--neon-deep); }

/* right cluster: language selector + CTA */
.nav-right { display: flex; align-items: center; gap: 12px; }

.nav-lang { position: relative; }
.nav-lang-btn {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.06em;
  color: var(--ink-2); background: transparent;
  border: 1px solid var(--hair-light); border-radius: 100px;
  padding: 8px 12px; cursor: pointer; transition: border-color 0.25s, color 0.25s;
}
.nav-lang-btn:hover { border-color: var(--ink); color: var(--ink); }
.nav-lang-globe { width: 13px; height: 13px; border-radius: 50%; border: 1.5px solid currentColor; position: relative; flex: none; opacity: 0.85; }
.nav-lang-globe::before { content: ""; position: absolute; inset: 0px 4px; border-radius: 50%; border: 1px solid currentColor; }
.nav-lang-caret { font-size: 9px; opacity: 0.7; transition: transform 0.25s; }
.nav-lang.open .nav-lang-caret { transform: rotate(180deg); }
.nav-lang-menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 210px; list-style: none; margin: 0; padding: 7px;
  background: rgba(248, 246, 242, 0.92);
  backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--hair-light); border-radius: 16px;
  box-shadow: 0 18px 44px -22px rgba(22, 17, 12, 0.5);
  opacity: 0; transform: translateY(-6px); pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
  z-index: 120;
}
.nav-lang.open .nav-lang-menu { opacity: 1; transform: none; pointer-events: auto; }
.nav-lang-menu li {
  font-family: var(--sans); font-size: 13.5px; color: var(--ink-2);
  padding: 9px 12px; border-radius: 9px; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  transition: background 0.18s, color 0.18s;
}
.nav-lang-menu li:hover { background: rgba(22, 17, 12, 0.05); color: var(--ink); }
.nav-lang-menu li .nav-lang-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--ink-3); }
.nav-lang-menu li.sel { color: var(--neon-deep); font-weight: 500; background: var(--neon-soft); }
.nav-lang-menu li.sel .nav-lang-tag { color: var(--neon-deep); }

@media (max-width: 1024px) { .nav-links { display: none; } }
@media (max-width: 560px) { .nav-lang-code, .nav-lang-caret { display: none; } .nav-lang-btn { padding: 8px 10px; } }
.nav-cta {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  padding: 9px 18px;
  border: 1px solid var(--ink);
  border-radius: 100px;
  background: var(--ink);
  color: #f3efe7 !important;
  transition: all 0.28s;
}
.nav-cta:hover { background: var(--neon); border-color: var(--neon); color: #2a1a0e !important; box-shadow: 0 0 28px rgba(217,140,82,0.4); }

/* ---------- buttons ---------- */
.btn {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 15px 28px;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.btn-primary { background: var(--neon); color: #2a1a0e; }
.btn-primary:hover { box-shadow: 0 0 40px rgba(217,140,82,0.5); transform: translateY(-2px); }
.btn-ghost-light { border-color: var(--hair-light); color: var(--ink); background: rgba(255,255,255,0.4); }
.btn-ghost-light:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-ghost-dark { border-color: var(--hair-dark); color: #f3efe7; }
.btn-ghost-dark:hover { border-color: var(--neon); color: var(--neon); transform: translateY(-2px); }
.btn .arrow { transition: transform 0.3s; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- hero ---------- */
.hero { min-height: clamp(560px, 86vh, 880px); display: flex; align-items: center; }
.hero .wrap { padding-top: clamp(60px, 8vw, 96px); padding-bottom: clamp(60px, 8vw, 96px); width: 100%; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }
@media (max-width: 980px) { .hero-grid { grid-template-columns: 1fr; gap: 44px; } }
.hero h1 { margin: 22px 0 26px; }
.hero-cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 38px; }
.hero-meta { display: flex; gap: 38px; margin-top: 54px; flex-wrap: wrap; }
.hero-meta .stat { display: flex; flex-direction: column; gap: 4px; }
.hero-meta .num { font-family: var(--mono); font-size: 26px; font-weight: 600; color: var(--ink); }
.hero-meta .lbl { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-3); }

/* ---------- placeholder frames ---------- */
.ph {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(120,124,128,0.10) 0px, rgba(120,124,128,0.10) 1px,
    transparent 1px, transparent 11px
  );
  border: 1px solid var(--hair-light);
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-dark .ph { border-color: var(--hair-dark); background-image: repeating-linear-gradient(-45deg, rgba(255,255,255,0.05) 0px, rgba(255,255,255,0.05) 1px, transparent 1px, transparent 11px); }
.ph .ph-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 7px 13px;
  border: 1px dashed var(--hair-light);
  border-radius: 6px;
  background: rgba(241,242,241,0.7);
  text-align: center;
  max-width: 80%;
}
.theme-dark .ph .ph-label { color: var(--mist); border-color: var(--hair-dark); background: rgba(7,8,9,0.5); }

/* hero product placeholder glassy frame */
.hero-product {
  aspect-ratio: 4 / 5;
  width: 100%;
  border-radius: 18px;
  position: relative;
  overflow: hidden;
  background: rgba(255,255,255,0.35);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 30px 80px -30px rgba(10,11,13,0.35), inset 0 1px 0 rgba(255,255,255,0.9);
  backdrop-filter: blur(2px);
  will-change: transform;
}
.hero-vid { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }
@media (max-width: 980px) {
  .hero-product { aspect-ratio: 16 / 11; max-width: 520px; margin-inline: auto; }
}

/* ---------- reveal animations ---------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.9s cubic-bezier(0.16,1,0.3,1), transform 0.9s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
}

/* ---------- mechanism ---------- */
.mech-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px,6vw,90px); align-items: center; }
@media (max-width: 900px){ .mech-grid { grid-template-columns: 1fr; } }
.mech-diagram { aspect-ratio: 1; position: relative; }
.ph.mech-video { width: 100%; height: 100%; border-radius: 18px; cursor: pointer; }
.ph.mech-video.has-vid { position: relative; overflow: hidden; cursor: default; }
.mech-vid { position: absolute; width: 191.7%; height: auto; left: -49.6%; top: -110%; max-width: none; }
.mech-video-inner { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.mech-play {
  width: 66px; height: 66px; border-radius: 50%;
  border: 1.5px solid var(--ink-2); display: flex; align-items: center; justify-content: center;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.mech-play::before {
  content: ""; margin-left: 5px;
  border-left: 18px solid var(--ink-2);
  border-top: 11px solid transparent; border-bottom: 11px solid transparent;
  transition: border-left-color 0.3s;
}
.ph.mech-video:hover .mech-play { border-color: var(--neon-deep); transform: scale(1.06); box-shadow: 0 0 0 6px var(--neon-soft); }
.ph.mech-video:hover .mech-play::before { border-left-color: var(--neon-deep); }
.hero-product:hover .mech-play { border-color: var(--neon-deep); transform: scale(1.06); box-shadow: 0 0 0 6px var(--neon-soft); }
.hero-product:hover .mech-play::before { border-left-color: var(--neon-deep); }
.mech-steps { display: flex; flex-direction: column; gap: 2px; margin-top: 36px; }
.mech-step { display: flex; gap: 18px; padding: 20px 0; border-top: 1px solid var(--hair-light); cursor: pointer; transition: padding-left 0.3s; }
.mech-step:hover { padding-left: 12px; }
.mech-step .idx { font-family: var(--mono); font-size: 12px; color: var(--neon-deep); padding-top: 4px; }
.mech-step .body h4 { font-family: var(--sans); font-size: 19px; font-weight: 600; margin-bottom: 6px; }
.mech-step .body p { font-size: 15px; line-height: 1.5; color: var(--ink-2); max-width: 40ch; }

/* ---------- problem list ---------- */
.prob-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 64px; }
@media (max-width: 860px){ .prob-head { grid-template-columns: 1fr; gap: 20px; } }
.prob-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hair-dark); border: 1px solid var(--hair-dark); border-radius: 12px; overflow: hidden; }
@media (max-width: 860px){ .prob-grid { grid-template-columns: 1fr; } }
.prob-cell { background: var(--night); padding: 34px 30px; min-height: 220px; display: flex; flex-direction: column; justify-content: space-between; transition: background 0.4s; position: relative; }
.prob-cell:hover { background: var(--night-2); }
.prob-cell .pnum { font-family: var(--mono); font-size: 12px; color: var(--mist-2); }
.prob-cell h4 { font-family: var(--serif); font-weight: 500; font-size: 27px; line-height: 1.05; margin-bottom: 12px; }
.prob-cell p { font-size: 14.5px; line-height: 1.55; color: var(--mist); }
.prob-cell::after { content:""; position:absolute; left:0; bottom:0; height:2px; width:0; background:var(--neon); transition: width 0.5s; }
.prob-cell:hover::after { width:100%; }

/* ---------- solution ---------- */
.sol { text-align: center; }
.sol .wrap { display: flex; flex-direction: column; align-items: center; }
.sol h2 { max-width: 16ch; margin: 26px auto 30px; }
.sol-line { width: 1px; height: 90px; background: linear-gradient(var(--neon), transparent); margin: 10px auto 0; }

/* ---------- ROI ---------- */
.roi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hair-dark); border: 1px solid var(--hair-dark); border-radius: 14px; overflow: hidden; margin-top: 60px; }
@media (max-width: 980px){ .roi-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .roi-grid { grid-template-columns: 1fr; } }
.roi-cell { background: var(--night); padding: 44px 32px; }
.roi-cell .rn { font-family: var(--mono); font-weight: 600; font-size: clamp(46px, 5vw, 72px); line-height: 1; color: #faf7f1; letter-spacing: -0.02em; }
.roi-cell .rn .u { color: var(--neon); }
.roi-cell .rl { font-size: 15px; line-height: 1.45; color: var(--mist); margin-top: 16px; max-width: 22ch; }

/* ---------- branding ---------- */
.brand-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px,6vw,90px); align-items: center; }
@media (max-width: 900px){ .brand-grid { grid-template-columns: 1fr; } }
.brand-360 { aspect-ratio: 1; position: relative; display:flex; align-items:center; justify-content:center; }
.brand-360 .brand-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.brand-feats { display: flex; flex-direction: column; gap: 26px; margin-top: 34px; }
.brand-feat { display:flex; gap:16px; align-items:flex-start; }
.brand-feat .dot { width:8px;height:8px;flex:none;margin-top:8px;background:var(--neon);transform:rotate(45deg);box-shadow:0 0 12px var(--neon); }
.brand-feat h4 { font-family:var(--sans); font-weight:600; font-size:18px; margin-bottom:5px; }
.brand-feat p { color: var(--mist); font-size:15px; line-height:1.5; max-width:42ch; }

/* ---------- neon edition (after-dark: navy + electric blue / purple / magenta)
   Scoped to #neon only — its own palette, distinct from the global warm site. */
#neon {
  --nx-blue: #5b80ff;
  --nx-indigo: #9a6bff;
  --nx-magenta: #ff5ad8;
  --nx-text: #eef1ff;
  --nx-mist: #9aa0c8;
  background: #05060f;              /* very dark navy behind the canvas */
}
.neon-ed { min-height: clamp(540px, 80vh, 820px); display: flex; align-items: center; }
.neon-ed .wrap { width: 100%; }
.neon-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px,6vw,80px); align-items: center; }
@media (max-width: 900px){ .neon-grid { grid-template-columns: 1fr; } }

#neon .neon-chip {
  display:inline-flex; align-items:center; gap:9px;
  font-family:var(--mono); font-size:11.5px; letter-spacing:0.16em; text-transform:uppercase;
  padding:8px 16px; border:1px solid rgba(120,140,255,0.45); border-radius:100px;
  color:var(--nx-blue); margin-bottom: 26px;
  box-shadow: 0 0 26px -6px rgba(91,128,255,0.55), inset 0 0 18px -8px rgba(154,107,255,0.5);
}
.neon-ed h2 { font-size: clamp(44px, 6.5vw, 104px); line-height: 0.92; color: var(--nx-text); }
.neon-sub {
  font-family: var(--serif); font-weight: 500; font-style: italic;
  font-size: clamp(22px, 2.6vw, 34px); line-height: 1.12; letter-spacing: -0.01em;
  margin: 20px 0 24px; max-width: 20ch;
  color: var(--nx-magenta);
  text-shadow: 0 0 36px rgba(255,90,216,0.45);
}
#neon .lead { color: var(--nx-mist); }

.neon-benefits { list-style:none; display:flex; flex-direction:column; gap:14px; margin:28px 0 36px; }
.neon-benefits li { display:flex; align-items:center; gap:14px; font-family:var(--sans); font-size:16px; color:var(--nx-text); }
.neon-benefits li .nb-dot { width:8px; height:8px; flex:none; border-radius:50%; background:var(--nx-blue); box-shadow:0 0 12px 1px rgba(91,128,255,0.85); }
.neon-benefits li:nth-child(2) .nb-dot { background:var(--nx-indigo); box-shadow:0 0 12px 1px rgba(154,107,255,0.85); }
.neon-benefits li:nth-child(3) .nb-dot { background:var(--nx-magenta); box-shadow:0 0 12px 1px rgba(255,90,216,0.85); }
.neon-benefits li:nth-child(4) .nb-dot { background:var(--nx-blue); box-shadow:0 0 12px 1px rgba(91,128,255,0.85); }

#neon .btn-primary {
  background: var(--nx-blue); color:#060818;
  box-shadow: 0 0 30px -6px rgba(91,128,255,0.6);
}
#neon .btn-primary:hover {
  background: var(--nx-blue);
  box-shadow: 0 0 48px -2px rgba(154,107,255,0.78);
  transform: translateY(-2px);
}

.neon-product {
  aspect-ratio: 3/4; border-radius: 18px; position: relative;
  border: 1px solid rgba(124,140,255,0.28);
  box-shadow: 0 0 92px -22px rgba(91,128,255,0.5), inset 0 0 72px -24px rgba(255,90,216,0.38);
  overflow:hidden;
}
.neon-vid { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; z-index: 1; }
.neon-product .ph-label {
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  font-family:var(--mono); font-size:11px; letter-spacing:0.14em; text-transform:uppercase;
  color: rgba(222,227,255,0.74); text-align:center; line-height:1.8;
  padding:9px 15px; border:1px dashed rgba(140,150,255,0.35); border-radius:8px;
  background: rgba(10,10,32,0.4); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
}
.neon-product .mech-video-inner {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
}
.neon-product .mech-video-inner .ph-label { position: static; left: auto; top: auto; transform: none; }
.neon-product .mech-play { border-color: rgba(238,241,255,0.6); }
.neon-product .mech-play::before { border-left-color: var(--nx-text); }
.neon-product:hover .mech-play { border-color: var(--nx-blue); transform: scale(1.06); box-shadow: 0 0 0 6px rgba(91,128,255,0.2); }
.neon-product:hover .mech-play::before { border-left-color: var(--nx-blue); }

/* ---------- sustainability (light return) ---------- */
.sus-grid { display:grid; grid-template-columns: repeat(3,1fr); gap: 40px; margin-top: 60px; }
@media (max-width:860px){ .sus-grid{ grid-template-columns:1fr; } }
.sus-card { padding-top: 26px; border-top: 1.5px solid var(--ink); }
.sus-card .k { font-family:var(--mono); font-size:12px; letter-spacing:0.14em; color:var(--neon-deep); text-transform:uppercase; }
.sus-card h4 { font-family:var(--serif); font-weight:500; font-size:30px; margin: 18px 0 12px; line-height:1.05; }
.sus-card p { color: var(--ink-2); font-size:15px; line-height:1.6; }

/* ---------- commercial model ---------- */
.model-grid { display:grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 56px; }
@media (max-width:900px){ .model-grid{ grid-template-columns:1fr; } }
.model-card { border:1px solid var(--hair-light); border-radius:16px; padding:36px 32px; display:flex; flex-direction:column; min-height: 380px; transition: all 0.35s; background: rgba(255,255,255,0.4); }
.model-card:hover { transform: translateY(-6px); border-color: var(--ink); box-shadow: 0 30px 60px -30px rgba(10,11,13,0.3); }
.model-card .mtag { font-family:var(--mono); font-size:12px; letter-spacing:0.1em; color:var(--ink-3); }
.model-card h3 { font-size: 33px; margin: 14px 0 16px; }
.model-card p { color: var(--ink-2); font-size:15px; line-height:1.6; flex:1; }
.model-card .mfeat { font-family:var(--mono); font-size:12.5px; color:var(--ink-2); padding:12px 0; border-top:1px solid var(--hair-light); display:flex; gap:10px; }
.model-card .mfeat::before { content:"+"; color:var(--neon-deep); }
.model-card.feature { background: var(--night); color:#f3efe7; border-color: transparent; }
.model-card.feature h3 { color:#faf7f1; } .model-card.feature p { color: var(--mist); }
.model-card.feature .mtag { color: var(--neon); }
.model-card.feature .mfeat { color: var(--mist); border-color: var(--hair-dark); }

/* ---------- built-for (compact environment marquee band) ---------- */
.bf { position: relative; }
#built-for .wrap { padding-top: clamp(40px, 4.6vw, 64px); padding-bottom: 0; }
#built-for { padding-bottom: clamp(40px, 4.6vw, 64px); }
.bf-head-c { text-align: center; max-width: 1000px; margin: 0 auto; }
.bf-head-c .eyebrow { justify-content: center; color: var(--neon); }
.bf-head-c .eyebrow::before { display: none; }
.bf-head-c h2 {
  margin-top: 14px;
  font-size: clamp(26px, 3.3vw, 40px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.bf-marquee {
  position: relative;
  z-index: 2;
  margin-top: clamp(26px, 3vw, 44px);
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 9%, #000 91%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 9%, #000 91%, transparent 100%);
}
.bf-row {
  display: flex;
  width: max-content;
  padding: 6px 0;
  animation: bfscroll 46s linear infinite;
  will-change: transform;
}
.bf-marquee:hover .bf-row { animation-play-state: paused; }
@keyframes bfscroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.bf-pill {
  flex: none;
  margin-right: 16px;
  font-family: var(--serif);
  font-size: clamp(13.5px, 1.05vw, 16.5px);
  font-weight: 500;
  letter-spacing: 0.005em;
  color: #f3efe7;
  white-space: nowrap;
  padding: 10px 24px;
  border: 1px solid rgba(217, 140, 82, 0.42);
  border-radius: 100px;
  background: rgba(217, 140, 82, 0.04);
  box-shadow: 0 0 26px -14px rgba(217, 140, 82, 0.5), inset 0 0 20px -16px rgba(217, 140, 82, 0.45);
  transition: border-color 0.3s, color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.bf-pill:hover {
  border-color: rgba(217, 140, 82, 0.85);
  color: #fffaf3;
  box-shadow: 0 0 38px -8px rgba(217, 140, 82, 0.6);
  transform: translateY(-2px);
}
@media (prefers-reduced-motion: reduce) {
  .bf-row { animation: none; }
  .bf-marquee {
    -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 4%, #000 96%, transparent 100%);
    mask-image: linear-gradient(90deg, transparent 0%, #000 4%, #000 96%, transparent 100%);
  }
}

/* ---------- partner form ---------- */
.partner { position: relative; }

/* centered, form-first layout */
.partner-head { text-align: center; max-width: 760px; margin: 0 auto clamp(34px, 4vw, 48px); }
.partner-head .eyebrow { justify-content: center; color: var(--neon); }
.partner-head .eyebrow::before { display: none; }
.partner-head h2 { margin-top: 16px; }
.partner-head .lead { margin: 18px auto 0; max-width: 56ch; color: var(--mist); }
.partner-card {
  max-width: 940px; margin: 0 auto;
  background: rgba(10, 12, 20, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: clamp(26px, 4vw, 52px);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  box-shadow: 0 40px 90px -50px rgba(0, 0, 0, 0.85);
}
#partner .field label { font-family: var(--sans); text-transform: none; letter-spacing: normal; font-size: 14px; color: #c9cdd6; display: flex; align-items: center; gap: 5px; }
#partner .field .req { color: var(--neon); }
#partner .field input, #partner .field textarea {
  font-family: var(--sans); font-size: 15px; color: #f3efe7;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.13); border-radius: 12px;
  padding: 14px 16px; width: 100%;
  transition: border-color 0.25s, background 0.25s;
}
#partner .field input:focus, #partner .field textarea:focus {
  outline: none; border-color: rgba(217, 140, 82, 0.7); background: rgba(255, 255, 255, 0.05);
}
#partner .field .underglow { display: none; }
#partner .field textarea { min-height: 150px; resize: vertical; }

/* telephone: country selector (left) + dial-prefixed number (right) */
#partner .tel-row { display: flex; gap: 12px; align-items: stretch; }
#partner .tel-cc { position: relative; flex: none; }
#partner .tel-cc-btn {
  display: flex; align-items: center; gap: 9px; height: 100%; min-height: 51px;
  font-family: var(--sans); font-size: 15px; color: #f3efe7;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.13); border-radius: 12px;
  padding: 0 14px; cursor: pointer; transition: border-color 0.25s, background 0.25s;
}
#partner .tel-cc-btn:hover, #partner .tel-cc.open .tel-cc-btn { border-color: rgba(217, 140, 82, 0.7); }
#partner .tel-flag { font-size: 19px; line-height: 1; }
#partner .tel-caret { font-size: 9px; opacity: 0.7; transition: transform 0.25s; }
#partner .tel-cc.open .tel-caret { transform: rotate(180deg); }
#partner .tel-num {
  flex: 1; display: flex; align-items: center; gap: 9px; padding: 0 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.13); border-radius: 12px;
  transition: border-color 0.25s, background 0.25s;
}
#partner .tel-num:focus-within { border-color: rgba(217, 140, 82, 0.7); background: rgba(255, 255, 255, 0.05); }
#partner .tel-dial-prefix { font-family: var(--sans); font-size: 15px; color: #c9cdd6; flex: none; }
#partner .tel-num input { border: none; background: transparent; border-radius: 0; padding: 14px 0; width: 100%; }
#partner .tel-num input:focus { background: transparent; border: none; }
#partner .tel-cc-menu {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 60;
  width: 290px; padding: 8px;
  background: rgba(14, 16, 24, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 14px;
  box-shadow: 0 26px 60px -28px rgba(0, 0, 0, 0.9);
  opacity: 0; transform: translateY(-6px); pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
}
#partner .tel-cc.open .tel-cc-menu { opacity: 1; transform: none; pointer-events: auto; }
#partner .tel-cc-search {
  width: 100%; margin-bottom: 7px; padding: 10px 12px;
  font-family: var(--sans); font-size: 14px; color: #f3efe7;
  background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 9px;
}
#partner .tel-cc-search:focus { outline: none; border-color: rgba(217, 140, 82, 0.6); }
#partner .tel-cc-list { list-style: none; margin: 0; padding: 0; max-height: 280px; overflow-y: auto; }
#partner .tel-cc-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 9px 11px; border-radius: 8px; cursor: pointer;
  font-family: var(--sans); font-size: 14px; color: #e6e8ef;
}
#partner .tel-cc-list li:hover { background: rgba(255, 255, 255, 0.06); }
#partner .tel-cc-list li.sel { color: var(--neon); }
#partner .tel-cc-list li .tel-cc-l { display: flex; align-items: center; gap: 10px; }
#partner .tel-cc-list li .tel-cc-flag { font-size: 16px; }
#partner .tel-cc-list li .tel-dial { font-family: var(--mono); font-size: 12px; color: #8a90a0; flex: none; }
#partner .field.error input, #partner .field.error select { border-color: #ff5f5f; }
#partner .form-actions { align-items: center; margin-top: 16px; }
#partner .form-actions .note { color: var(--mist-2); }
#partner .btn-primary {
  background: linear-gradient(180deg, #eaa861, #d97f37);
  color: #2a1a0e; padding: 15px 30px;
  box-shadow: 0 0 38px -8px rgba(217, 140, 82, 0.7);
}
#partner .btn-primary:hover { box-shadow: 0 0 54px -4px rgba(217, 140, 82, 0.85); transform: translateY(-2px); }
@media (max-width: 620px) {
  #partner .form { grid-template-columns: 1fr; }
}

.partner-grid { display:grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(40px,6vw,90px); }
@media (max-width: 940px){ .partner-grid { grid-template-columns: 1fr; gap: 50px; } }
.partner-trust { display:flex; flex-direction:column; gap:22px; margin-top: 40px; }
.trust-item { display:flex; gap:14px; align-items:flex-start; padding-bottom:22px; border-bottom:1px solid var(--hair-dark); }
.trust-item .ti-n { font-family:var(--mono); font-size:13px; color:var(--neon); flex:none; padding-top:2px; }
.trust-item h4 { font-family:var(--sans); font-weight:600; font-size:16px; margin-bottom:4px; }
.trust-item p { color:var(--mist); font-size:14px; line-height:1.5; }

.form { display:grid; grid-template-columns: 1fr 1fr; gap: 24px 22px; }
.field { display:flex; flex-direction:column; gap:9px; position: relative; }
.field.full { grid-column: 1 / -1; }
.field label { font-family:var(--mono); font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--mist); }
.field input, .field select, .field textarea {
  font-family: var(--sans); font-size:16px; color:#f3efe7;
  background: transparent; border:none; border-bottom:1px solid var(--hair-dark);
  padding: 11px 2px; transition: border-color 0.3s; width:100%;
}
.field textarea { resize:vertical; min-height:80px; }
.field select option { background: var(--night-2); color:#f3efe7; }
.field input:focus, .field select:focus, .field textarea:focus { outline:none; border-color: var(--neon); }
.field input::placeholder, .field textarea::placeholder { color: var(--mist-2); }
.field .underglow { position:absolute; left:0; bottom:0; height:1px; width:0; background:var(--neon); box-shadow:0 0 12px var(--neon); transition: width 0.4s; }
.field input:focus ~ .underglow, .field select:focus ~ .underglow, .field textarea:focus ~ .underglow { width:100%; }
.field.error input, .field.error select { border-color: #ff5f5f; }
.field .err-msg { font-family:var(--mono); font-size:11px; color:#ff7a7a; height:0; overflow:hidden; transition:height 0.2s; }
.field.error .err-msg { height:14px; }
.form-actions { grid-column:1/-1; display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap; margin-top:8px; }
.form-actions .note { font-family:var(--mono); font-size:11px; color:var(--mist-2); max-width:34ch; line-height:1.5; }
.form-success { text-align:center; padding: 40px 0; }
.form-success .check { width:64px;height:64px;border-radius:50%;border:1.5px solid var(--neon); display:flex;align-items:center;justify-content:center; margin:0 auto 24px; color:var(--neon); font-size:28px; box-shadow:0 0 40px rgba(217,140,82,0.3); }
.form-success h3 { color:#faf7f1; font-size:34px; margin-bottom:12px; }
.form-success p { color:var(--mist); max-width:40ch; margin:0 auto; line-height:1.6; }

/* ---------- faq (accordion card) ---------- */
.faq-list { display: flex; flex-direction: column; border-top: 1px solid var(--hair-light); }
.faq-item { border-bottom: 1px solid var(--hair-light); }
.faq-q {
  width: 100%; display: flex; align-items: flex-start; gap: 22px;
  padding: 26px 4px; background: none; border: none; cursor: pointer;
  text-align: left; transition: padding-left 0.3s cubic-bezier(.16,1,.3,1);
}
.faq-q:hover { padding-left: 10px; }
.faq-n { font-family: var(--mono); font-size: 12px; color: var(--neon-deep); flex: none; padding-top: 9px; }
.faq-qt {
  font-family: var(--serif); font-weight: 500; font-size: clamp(19px, 2vw, 27px);
  line-height: 1.2; letter-spacing: -0.01em; color: var(--ink); flex: 1;
  transition: color 0.25s;
}
.faq-item.open .faq-qt, .faq-q:hover .faq-qt { color: var(--neon-deep); }
.faq-ic { position: relative; width: 20px; height: 20px; flex: none; margin-top: 6px; }
.faq-ic::before, .faq-ic::after {
  content: ""; position: absolute; background: var(--ink-2); border-radius: 2px;
  transition: transform 0.4s cubic-bezier(.16,1,.3,1), background 0.25s;
}
.faq-ic::before { left: 0; top: 9px; width: 20px; height: 2px; }
.faq-ic::after  { left: 9px; top: 0; width: 2px; height: 20px; }
.faq-item.open .faq-ic::after { transform: rotate(90deg); }
.faq-item.open .faq-ic::before, .faq-item.open .faq-ic::after { background: var(--neon-deep); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.45s cubic-bezier(.16,1,.3,1); }
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a-in { overflow: hidden; }
.faq-a-in p {
  font-size: 16px; line-height: 1.65; color: var(--ink-2); max-width: 66ch;
  padding: 0 34px 30px 44px;
}
@media (max-width: 620px) {
  .faq-q { gap: 16px; }
  .faq-a-in p { padding: 0 0 26px 40px; }
}

/* ---------- footer (dark panel inside frame) ---------- */
.footer { background: var(--night); color: #f3efe7; border-radius: var(--panel-radius); padding: clamp(46px, 5vw, 64px) clamp(28px, 5vw, 64px) clamp(34px, 4vw, 44px); box-shadow: 0 30px 80px -50px rgba(10, 11, 13, 0.55); }
.footer-inner { max-width: var(--content-max); margin:0 auto; display:flex; justify-content:space-between; align-items:flex-start; gap:40px; flex-wrap:wrap; }
.footer .brand { color:#f3efe7; }
.footer-cols { display:flex; gap:64px; flex-wrap:wrap; }
.footer-col h5 { font-family:var(--mono); font-size:11px; letter-spacing:0.14em; text-transform:uppercase; color:var(--mist-2); margin-bottom:16px; }
.footer-col a { display:block; color:var(--mist); font-size:14px; padding:5px 0; transition:color 0.25s; }
.footer-col a:hover { color:var(--neon); }
.footer-base { max-width:var(--content-max); margin: 44px auto 0; padding-top:26px; border-top:1px solid var(--hair-dark); display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; font-family:var(--mono); font-size:11px; color:var(--mist-2); letter-spacing:0.06em; }
@media (max-width: 760px) { .footer { border-radius: 18px; } }

/* cursor-reactive CSS glow backgrounds (no WebGL context needed) */
.glow-bg {
  background-color: var(--gc, #0c0a08);
  background-image:
    radial-gradient(55% 45% at var(--mx, 50%) var(--my, 38%), rgba(217, 140, 82, var(--ga, 0.2)), transparent 68%),
    radial-gradient(70% 55% at 85% 115%, rgba(217, 140, 82, 0.06), transparent 60%);
}
.glow-bg::before {
  content: "";
  position: absolute;
  inset: -10%;
  background: radial-gradient(38% 38% at 22% 28%, rgba(217, 140, 82, 0.05), transparent 70%);
  animation: glowdrift 16s ease-in-out infinite alternate;
  pointer-events: none;
}
.glow-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px, transparent 1px, transparent 3px);
  pointer-events: none;
}
@keyframes glowdrift {
  from { transform: translate(-6%, -4%); }
  to   { transform: translate(9%, 7%); }
}
@media (prefers-reduced-motion: reduce) { .glow-bg::before { animation: none; } }

/* scroll progress bar */
.scroll-prog { position: fixed; top:0; left:0; height:2px; background: var(--neon); z-index:200; width:0; box-shadow:0 0 12px var(--neon); }

/* section index marker (left rail) */
.rail { position: fixed; left: 22px; top:50%; transform: translateY(-50%); z-index:90; display:flex; flex-direction:column; gap:14px; }
@media (max-width: 1100px){ .rail { display:none; } }
.rail a { width:7px; height:7px; border-radius:50%; background: rgba(150,150,150,0.4); transition: all 0.3s; }
.rail a.active { background: var(--neon); box-shadow:0 0 12px var(--neon); transform: scale(1.4); }

/* ---------- subtle cursor-follow glow (added globally; pointer-events: none) ---------- */
.cursor-glow {
  position: fixed; top: 0; left: 0;
  width: 300px; height: 300px; margin: -150px 0 0 -150px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 95;
  opacity: 0;
  background: radial-gradient(circle, rgba(217, 140, 82, 0.14) 0%, rgba(217, 140, 82, 0.06) 38%, transparent 70%);
  will-change: transform, opacity;
}
@media (hover: none), (prefers-reduced-motion: reduce) { .cursor-glow { display: none; } }