/* ============================================================================
   PREFLOOR design system v4
   Token logic follows Material 3 (type scale, elevation), Carbon (4px spacing
   grid, data density) and Atlassian (navigation, tabs, tags).
   Light is the default theme; dark is opt-in via [data-theme="dark"].
   ============================================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --s1:4px;  --s2:8px;  --s3:12px; --s4:16px; --s5:24px;
  --s6:32px; --s7:48px; --s8:64px; --s9:96px;

  --r-s:8px; --r-m:12px; --r-l:16px; --r-xl:24px; --r-full:999px;

  --f-display:clamp(38px,4.6vw,57px);
  --f-h1:clamp(28px,3.2vw,38px);
  --f-h3:20px;
  --f-title:17px;
  --f-body:16px;
  --f-body-s:14.5px;
  --f-label:13px;
  --f-mono:11.5px;

  --lh-tight:1.08; --lh-snug:1.24; --lh-body:1.62;

  --display:'Onest',ui-sans-serif,system-ui,sans-serif;
  --body:'Manrope',ui-sans-serif,system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1200px;
  --ease:cubic-bezier(.2,.7,.2,1);

  --violet:#6B5CE7;
  --ok:#1E9E6A;
}

/* light theme, default */
:root{
  --bg:#FBFCFD;
  --bg-2:#F2F6F8;
  --surface:#FFFFFF;
  --surface-2:#F4F8FA;
  --line:#E4E9EF;
  --line-2:#C9D3DE;
  --ink:#0C1116;
  --text:#3D4854;
  --muted:#6B7787;
  --brand:#00808D;
  --brand-bright:#00B8C9;
  --brand-soft:#E2F6F8;
  --grid-line:rgba(12,17,22,.055);
  --glow-1:rgba(0,184,201,.22);
  --glow-2:rgba(107,92,231,.14);
  --sh-1:0 1px 2px rgba(12,17,22,.06);
  --sh-2:0 4px 16px rgba(12,17,22,.08);
  --sh-3:0 16px 44px rgba(12,17,22,.12);
  --on-brand:#FFFFFF;
  --chip-bg:#FFFFFF;
  --globe-dot:#AEBDCC;
  --globe-hot:#00A0AF;
}

[data-theme="deep"]{
  --bg:#04141A;
  --bg-2:#061A22;
  --surface:#082029;
  --surface-2:#0B2934;
  --line:rgba(120,235,238,.13);
  --line-2:rgba(120,235,238,.24);
  --ink:#EAFBFB;
  --text:#9FC3C8;
  --muted:#6E969C;
  --brand:#3FE0D0;
  --brand-bright:#7BF5E8;
  --brand-soft:rgba(63,224,208,.13);
  --violet:#8B7BFF;
  --grid-line:rgba(120,235,238,.06);
  --glow-1:rgba(63,224,208,.26);
  --glow-2:rgba(139,123,255,.24);
  --sh-1:0 1px 2px rgba(0,0,0,.45);
  --sh-2:0 6px 22px rgba(0,0,0,.42);
  --sh-3:0 22px 60px rgba(0,0,0,.55);
  --on-brand:#03211E;
  --chip-bg:rgba(120,235,238,.05);
  --globe-dot:#1E4650;
  --globe-hot:#3FE0D0;
}

[data-theme="dark"]{
  --bg:#07090D;
  --bg-2:#0B0E14;
  --surface:#0E1219;
  --surface-2:#131822;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.17);
  --ink:#F2F5F8;
  --text:#A9B2BF;
  --muted:#78818F;
  --brand:#22D3E4;
  --brand-bright:#5BE9F5;
  --brand-soft:rgba(34,211,228,.13);
  --grid-line:rgba(255,255,255,.05);
  --glow-1:rgba(0,184,201,.30);
  --glow-2:rgba(107,92,231,.24);
  --sh-1:0 1px 2px rgba(0,0,0,.5);
  --sh-2:0 6px 22px rgba(0,0,0,.45);
  --sh-3:0 22px 60px rgba(0,0,0,.6);
  --on-brand:#04252A;
  --chip-bg:rgba(255,255,255,.04);
  --globe-dot:#2A3340;
  --globe-hot:#22D3E4;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:hidden;max-width:100vw;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--body);font-size:var(--f-body);line-height:var(--lh-body);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  transition:background-color .45s var(--ease),color .45s var(--ease);
}
img,svg,canvas{display:block;max-width:100%;}
a{color:var(--brand);text-decoration:none;}
a:hover{text-decoration:underline;}
::selection{background:var(--brand-soft);color:var(--ink);}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--s5);}

/* ---------- 2. ambient ---------- */
.bgfx{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;}
.bgfx .grid{position:absolute;inset:-2px;
  background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:72px 72px;
  mask-image:radial-gradient(ellipse 95% 55% at 50% 0%,#000 20%,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 95% 55% at 50% 0%,#000 20%,transparent 72%);}
.bgfx .glow{position:absolute;border-radius:50%;filter:blur(130px);}
.bgfx .g1{width:1100px;height:560px;left:50%;top:-300px;transform:translateX(-50%);
  background:radial-gradient(circle,var(--glow-1),transparent 68%);}
.bgfx .g2{width:640px;height:640px;right:-240px;top:820px;
  background:radial-gradient(circle,var(--glow-2),transparent 68%);}
main,header,footer{position:relative;z-index:1;}
.progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--brand),var(--violet));}

/* ---------- 3. navigation ---------- */
header.nav{position:sticky;top:0;z-index:90;border-bottom:1px solid transparent;
  transition:background-color .3s var(--ease),border-color .3s var(--ease);}
header.nav.stuck{background:color-mix(in srgb,var(--bg) 84%,transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line);}
header.nav .wrap{display:flex;align-items:center;height:68px;gap:var(--s6);}
.logo{font-family:var(--display);font-weight:800;font-size:19px;letter-spacing:.13em;color:var(--ink);}
.logo:hover{text-decoration:none;}
.logo i{color:var(--brand);font-style:normal;}
.navlinks{display:flex;gap:var(--s5);margin-left:auto;}
.navlinks a{font-size:var(--f-body-s);color:var(--text);position:relative;padding:6px 0;}
.navlinks a:hover{color:var(--ink);text-decoration:none;}
.navlinks a:after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1.5px;
  background:var(--brand);transition:right .3s var(--ease);}
.navlinks a:hover:after{right:0;}
.navtools{display:flex;align-items:center;gap:var(--s3);margin-left:var(--s2);}
.iconbtn{width:38px;height:38px;border-radius:var(--r-full);border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--text);
  transition:.25s var(--ease);}
.iconbtn:hover{border-color:var(--line-2);color:var(--ink);transform:translateY(-1px);}
.iconbtn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}
.themeseg{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:var(--r-full);
  background:var(--surface);box-shadow:var(--sh-1);}
.themeseg button{width:32px;height:32px;border:0;border-radius:var(--r-full);background:none;cursor:pointer;
  display:grid;place-items:center;color:var(--muted);transition:.25s var(--ease);}
.themeseg button:hover{color:var(--ink);}
.themeseg button[aria-pressed="true"]{background:var(--brand-soft);color:var(--brand);}
.themeseg svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 4. type ---------- */
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);font-weight:800;margin:0;letter-spacing:-.02em;}
h1{font-size:var(--f-display);line-height:var(--lh-tight);}
h2{font-size:var(--f-h1);line-height:var(--lh-snug);}
h3{font-size:var(--f-h3);line-height:1.3;font-weight:700;}
h4{font-size:var(--f-title);font-weight:700;}
p{margin:0 0 var(--s4);}
.lead{font-size:clamp(16.5px,1.35vw,18.5px);line-height:1.6;color:var(--text);}
.eyebrow{font-family:var(--mono);font-size:var(--f-mono);letter-spacing:.19em;text-transform:uppercase;
  color:var(--brand);display:flex;align-items:center;gap:var(--s2);}
.eyebrow:before{content:"";width:22px;height:1px;background:var(--brand);display:block;}
.small{font-size:var(--f-label);line-height:1.6;color:var(--muted);}

/* ---------- 5. buttons, chips ---------- */
.btn{display:inline-flex;align-items:center;gap:var(--s2);height:50px;white-space:nowrap;padding:0 var(--s5);
  border-radius:var(--r-m);font-weight:700;font-size:15px;position:relative;overflow:hidden;
  background:var(--brand);color:var(--on-brand);box-shadow:var(--sh-2);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.btn:hover{transform:translateY(-2px);box-shadow:var(--sh-3);text-decoration:none;}
.btn:after{content:"";position:absolute;top:0;left:-140%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.38),transparent);
  animation:shimmer 4.4s infinite;}
@keyframes shimmer{0%{left:-140%;}55%,100%{left:170%;}}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2);box-shadow:none;}
.btn.ghost:after{display:none;}
.btn.ghost:hover{background:var(--surface-2);box-shadow:var(--sh-1);}
.btn .arw{transition:transform .25s var(--ease);}
.btn:hover .arw{transform:translateX(4px);}

.badge{display:inline-flex;align-items:center;gap:var(--s2);padding:6px 14px 6px 11px;
  border-radius:var(--r-full);border:1px solid var(--line);background:var(--surface);
  font-size:var(--f-label);color:var(--text);box-shadow:var(--sh-1);}
.badge b{width:7px;height:7px;border-radius:50%;background:var(--ok);
  box-shadow:0 0 0 0 rgba(30,158,106,.5);animation:pulse 2.6s infinite;}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(30,158,106,0);}100%{box-shadow:0 0 0 0 rgba(30,158,106,0);}}

.chip{display:inline-flex;align-items:center;gap:var(--s2);padding:8px 15px;border-radius:var(--r-full);
  border:1px solid var(--line);background:var(--chip-bg);font-size:var(--f-label);color:var(--text);
  white-space:nowrap;transition:.25s var(--ease);}
.chip b{width:5px;height:5px;border-radius:50%;background:var(--brand);}
.chip:hover{border-color:var(--brand);color:var(--ink);transform:translateY(-1px);}

/* ---------- 6. sections and cards ---------- */
section{padding:var(--s9) 0;position:relative;}
section > .wrap{position:relative;}
section[data-rail] > .wrap:before{content:"";position:absolute;left:-2px;top:8px;bottom:8px;width:2px;
  border-radius:2px;background:linear-gradient(180deg,var(--brand),transparent 70%);opacity:.55;}
section[data-rail] > .wrap:after{content:"";position:absolute;left:-6px;top:6px;width:10px;height:10px;
  border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
@media (max-width:1320px){section[data-rail] > .wrap:before,section[data-rail] > .wrap:after{display:none;}}
section + section:before{content:"";position:absolute;top:0;left:50%;translate:-50% 0;
  width:min(var(--wrap),100% - 48px);height:1px;
  background:linear-gradient(90deg,transparent,var(--line),transparent);}
.sechead{max-width:760px;margin-bottom:var(--s7);}
.sechead h2{margin:var(--s3) 0 var(--s4);}

.card{position:relative;border:1px solid var(--line);border-radius:var(--r-l);background:var(--surface);
  padding:var(--s5);overflow:hidden;box-shadow:none;
  transition:box-shadow .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);}
.card:before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s;
  background:radial-gradient(460px circle at var(--mx,50%) var(--my,50%),var(--glow-1),transparent 62%);}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);border-color:var(--line-2);}
.card:hover:before{opacity:1;}
.card h3{margin-bottom:var(--s2);}
.card p{font-size:var(--f-body-s);line-height:1.6;margin:0;}
.card .ic{width:40px;height:40px;border-radius:var(--r-m);display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:var(--s4);}
.card .ic svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}

.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--s4);}
.b2{grid-column:span 2;} .b3{grid-column:span 3;} .b4{grid-column:span 4;} .b6{grid-column:span 6;}

.beam{position:relative;border-radius:var(--r-l);padding:1px;overflow:hidden;background:var(--line);
  box-shadow:var(--sh-3);}
.beam:before{content:"";position:absolute;left:50%;top:50%;width:230%;aspect-ratio:1;translate:-50% -50%;
  background:conic-gradient(from 0deg,transparent 0 60%,var(--brand-bright) 74%,var(--violet) 83%,transparent 91%);
  animation:spin 8s linear infinite;}
@keyframes spin{to{rotate:360deg;}}
.beam > .inner{position:relative;border-radius:calc(var(--r-l) - 1px);background:var(--surface);
  padding:var(--s5);}

/* ---------- 7. hero ---------- */
.hero{padding:var(--s8) 0 var(--s9);}
.herogrid{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--s8);align-items:center;}
.hero h1{margin:var(--s4) 0 var(--s5);}
.hero .lead{max-width:54ch;}
.actions{display:flex;gap:var(--s3);flex-wrap:wrap;margin-top:var(--s6);}
.trust{display:flex;gap:var(--s7);margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid var(--line);
  flex-wrap:wrap;}
.trust span{display:block;font-family:var(--display);font-size:30px;font-weight:800;color:var(--ink);
  line-height:1;}
.trust small{font-size:12.5px;color:var(--muted);}
.rotator{display:grid;vertical-align:top;max-width:100%;}
.rotator > span{grid-area:1/1;opacity:0;transform:translateY(16px);transition:.55s var(--ease);
  background:linear-gradient(100deg,var(--brand) 6%,var(--violet) 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;white-space:nowrap;}
.rotator > span.on{opacity:1;transform:none;}

/* ---------- 7b. stats band ---------- */
.statband{border:1px solid var(--line);border-radius:var(--r-l);background:var(--surface);
  box-shadow:none;display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;}
.statband .cell{padding:var(--s5) var(--s5) var(--s5);border-left:1px solid var(--line);position:relative;}
.statband .cell:first-child{border-left:0;}
.statband .cell:before{content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--violet));transition:width .9s var(--ease);}
.revealed .statband .cell:before{width:100%;}
.revealed .statband .cell:nth-child(2):before{transition-delay:.1s;}
.revealed .statband .cell:nth-child(3):before{transition-delay:.2s;}
.revealed .statband .cell:nth-child(4):before{transition-delay:.3s;}
.statband .v{font-family:var(--display);font-size:34px;font-weight:800;color:var(--ink);line-height:1;
  margin-bottom:6px;}
.statband .k{font-size:13px;color:var(--muted);}
.statband .n{font-family:var(--mono);font-size:10px;letter-spacing:.15em;color:var(--brand);
  margin-bottom:var(--s3);display:block;}
@media (max-width:820px){.statband{grid-template-columns:1fr 1fr;}
  .statband .cell{border-left:0;border-top:1px solid var(--line);}
  .statband .cell:nth-child(-n+2){border-top:0;}
  .statband .cell:nth-child(odd){border-left:0;}}

/* ---------- 7c. 3D method cloud ---------- */
.cloud{position:relative;width:100%;aspect-ratio:1;max-width:470px;margin-inline:auto;
  perspective:1100px;cursor:grab;touch-action:none;}
.cloud:active{cursor:grabbing;}
.cloud .sphere{position:absolute;inset:0;transform-style:preserve-3d;}
.cloud .halo{position:absolute;inset:12%;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 50% 42%,var(--glow-1),transparent 62%);filter:blur(30px);}
.cloud .orbit{position:absolute;inset:3%;border-radius:50%;border:1px dashed var(--line);
  animation:spin 60s linear infinite;pointer-events:none;}
.cloud .orbit.b{inset:14%;border-style:solid;animation-duration:38s;animation-direction:reverse;opacity:.6;}
.cloud .w{position:absolute;left:50%;top:50%;white-space:nowrap;font-size:12.5px;font-weight:500;
  padding:6px 13px;border-radius:var(--r-full);border:1px solid var(--line);background:var(--surface);
  color:var(--muted);box-shadow:none;will-change:transform,opacity;
  transition:border-color .2s,color .2s,background-color .2s;}
.cloud .w.hot{border-color:color-mix(in srgb,var(--brand) 55%,transparent);color:var(--text);}
.cloud .w:hover{border-color:var(--brand);color:var(--ink);}
.cloud .core{position:absolute;left:50%;top:50%;translate:-50% -50%;z-index:200;width:118px;height:118px;border-radius:50%;
  display:grid;place-items:center;text-align:center;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);
  box-shadow:var(--sh-3);font-family:var(--display);font-weight:800;font-size:11px;letter-spacing:.1em;line-height:1.2;
  color:var(--ink);pointer-events:none;}
.cloud .core em{font-style:normal;display:block;font-family:var(--mono);font-size:8px;letter-spacing:.08em;
  color:var(--brand);margin-top:5px;line-height:1.3;}

/* ---------- 8. flow panel ---------- */
.flow .row{display:flex;align-items:center;gap:var(--s3);padding:var(--s3) var(--s4);
  border-radius:var(--r-m);border:1px solid var(--line);background:var(--surface-2);}
.flow .row.hi{border-color:var(--brand);background:var(--brand-soft);}
.flow .rail{height:26px;margin-left:26px;width:1px;background:var(--line-2);position:relative;overflow:hidden;}
.flow .rail:after{content:"";position:absolute;left:-1px;width:3px;height:13px;border-radius:2px;
  background:var(--brand);animation:drop 2.4s var(--ease) infinite;}
@keyframes drop{0%{top:-16px;opacity:0;}25%{opacity:1;}100%{top:28px;opacity:0;}}
.flow .n{width:32px;height:32px;flex:0 0 32px;border-radius:var(--r-s);display:grid;place-items:center;
  background:var(--bg);border:1px solid var(--line);font-family:var(--mono);font-size:11px;color:var(--brand);}
.flow .t{font-size:14.5px;color:var(--ink);font-weight:700;}
.flow .s{font-size:12.5px;color:var(--muted);}
.flow .divider{display:flex;align-items:center;gap:var(--s2);margin:var(--s4) 0 var(--s3);}
.flow .divider span{font-family:var(--mono);font-size:10px;letter-spacing:.15em;color:var(--brand);
  white-space:nowrap;}
.flow .divider i{flex:1;height:1px;background:linear-gradient(90deg,var(--line-2),transparent);}
.flow .three{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s2);}
.flow .three .row{flex-direction:column;align-items:flex-start;gap:2px;padding:var(--s3);}

/* ---------- 9. tabs ---------- */
.tabs{display:flex;gap:var(--s1);border-bottom:1px solid var(--line);position:relative;flex-wrap:wrap;}
.tabs button{appearance:none;background:none;border:0;cursor:pointer;font-family:inherit;
  font-size:var(--f-body-s);font-weight:600;color:var(--muted);padding:var(--s3) var(--s4);
  border-radius:var(--r-s) var(--r-s) 0 0;transition:color .2s,background-color .2s;}
.tabs button:hover{color:var(--ink);background:var(--surface-2);}
.tabs button[aria-selected="true"]{color:var(--brand);}
.tabs .ind{position:absolute;bottom:-1px;left:0;width:0;height:2px;background:var(--brand);border-radius:2px;
  transition:left .35s var(--ease),width .35s var(--ease);}
.tabpanel{display:none;padding-top:var(--s5);}
.tabpanel.on{display:block;animation:fadeUp .45s var(--ease);}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}

/* ---------- 10. globe ---------- */
.globewrap{display:grid;grid-template-columns:1fr 1fr;gap:var(--s7);align-items:center;}
.globe{position:relative;aspect-ratio:1;max-width:540px;width:100%;margin-inline:auto;}
.globe canvas{width:100%;height:100%;}
.globe .ring{position:absolute;inset:4%;border-radius:50%;border:1px solid var(--line);
  animation:spin 30s linear infinite;pointer-events:none;}
.globe .ring.b{inset:-3%;border-style:dashed;animation-duration:52s;animation-direction:reverse;opacity:.7;}
.globe .halo{position:absolute;inset:10%;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle at 50% 45%,var(--glow-1),transparent 62%);filter:blur(26px);}
.globe .pin{position:absolute;transform:translate(-50%,-50%);pointer-events:none;display:flex;
  align-items:center;gap:7px;padding:5px 12px;border-radius:var(--r-full);background:var(--surface);
  border:1px solid var(--brand);box-shadow:var(--sh-2);font-family:var(--display);font-size:11.5px;
  font-weight:700;letter-spacing:.03em;color:var(--ink);white-space:nowrap;transition:opacity .3s;}
.globe .pin.sub{border-color:var(--line-2);font-family:var(--mono);font-size:9.5px;font-weight:400;
  letter-spacing:.1em;text-transform:uppercase;color:var(--text);padding:3px 9px;}
.globe .pin i{width:6px;height:6px;border-radius:50%;background:var(--brand);animation:pulse 2.4s infinite;}

.methods{display:grid;gap:var(--s3);}
.method{display:flex;align-items:flex-start;gap:var(--s3);padding:var(--s4);border:1px solid var(--line);
  border-radius:var(--r-m);background:var(--surface);transition:.3s var(--ease);}
.method:hover{border-color:var(--brand);transform:translateX(5px);box-shadow:var(--sh-2);}
.method .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.13em;color:var(--brand);padding-top:3px;
  flex:0 0 28px;}
.method h4{margin-bottom:2px;}
.method p{margin:0;font-size:13.6px;color:var(--muted);}

/* ---------- 11. stepper ---------- */
.stepper{display:grid;grid-template-columns:290px 1fr;gap:var(--s7);align-items:start;}
.stepnav{display:grid;gap:var(--s1);}
.stepnav button{appearance:none;background:none;border:1px solid transparent;text-align:left;cursor:pointer;
  font-family:inherit;padding:var(--s4) var(--s4) var(--s4) var(--s6);border-radius:var(--r-m);
  position:relative;color:var(--muted);transition:.25s var(--ease);}
.stepnav button:hover{background:var(--surface-2);color:var(--ink);}
.stepnav button[aria-selected="true"]{background:var(--surface);border-color:var(--line);
  box-shadow:var(--sh-1);color:var(--ink);}
.stepnav button .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.15em;color:var(--brand);
  display:block;margin-bottom:3px;}
.stepnav button .l{font-family:var(--display);font-weight:700;font-size:15.5px;}
.stepnav button:before{content:"";position:absolute;left:var(--s3);top:50%;translate:0 -50%;width:8px;
  height:8px;border-radius:50%;background:var(--line-2);transition:.25s;}
.stepnav button[aria-selected="true"]:before{background:var(--brand);box-shadow:0 0 0 4px var(--brand-soft);}
.steppanel{display:none;}
.steppanel.on{display:block;animation:fadeUp .45s var(--ease);}
.steppanel .bar{height:3px;border-radius:3px;background:var(--line);overflow:hidden;margin-bottom:var(--s5);}
.steppanel .bar i{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--brand),var(--violet));animation:grow 1s var(--ease) forwards;}
@keyframes grow{to{width:var(--w,100%);}}
.steppanel ul{margin:var(--s4) 0 0;padding-left:18px;}
.steppanel li{margin-bottom:7px;font-size:14.6px;}

/* ---------- 12. pipeline and meters ---------- */
.pipe{display:grid;gap:var(--s2);}
.pipe .step{display:flex;align-items:center;gap:var(--s3);padding:var(--s3) var(--s4);
  border-radius:var(--r-m);border:1px solid var(--line);background:var(--surface);opacity:.4;
  transform:translateX(-10px);transition:.55s var(--ease);}
.revealed .pipe .step{opacity:1;transform:none;}
.revealed .pipe .step:nth-child(2){transition-delay:.12s;}
.revealed .pipe .step:nth-child(3){transition-delay:.24s;}
.revealed .pipe .step:nth-child(4){transition-delay:.36s;}
.revealed .pipe .step:nth-child(5){transition-delay:.48s;}
.pipe .dot{width:20px;height:20px;flex:0 0 20px;border-radius:50%;border:1.5px solid var(--brand);
  display:grid;place-items:center;color:var(--brand);font-size:11px;line-height:1;}
.pipe .lbl{font-size:14.4px;color:var(--ink);}
.pipe .st{margin-left:auto;font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--muted);}

.meter{display:grid;gap:var(--s4);}
.meter .lb{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px;}
.meter .tr{height:8px;border-radius:5px;background:var(--surface-2);border:1px solid var(--line);
  overflow:hidden;}
.meter .tr i{display:block;height:100%;width:0;border-radius:5px;
  background:linear-gradient(90deg,var(--brand),var(--brand-bright));transition:width 1.2s var(--ease);}
.revealed .meter .tr i{width:var(--w);}
.meter .m:last-child .tr i{background:linear-gradient(90deg,var(--brand),var(--violet));}

/* ---------- 13. marquee ---------- */
.marquee{position:relative;overflow:hidden;
  mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);}
.marquee .track{display:flex;gap:var(--s3);width:max-content;animation:slide 46s linear infinite;}
.marquee.rev .track{animation-direction:reverse;animation-duration:58s;}
.marquee + .marquee{margin-top:var(--s3);}
@keyframes slide{to{transform:translateX(-50%);}}
.marquee:hover .track{animation-play-state:paused;}

/* ---------- 14. checklist ---------- */
.check{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:0 var(--s7);}
.check li{position:relative;padding:var(--s3) 0 var(--s3) var(--s6);border-bottom:1px solid var(--line);
  font-size:14.6px;}
.check li i{position:absolute;left:0;top:var(--s3);font-family:var(--mono);font-size:10.5px;
  color:var(--brand);font-style:normal;}

/* ---------- 15. faq ---------- */
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);}
.faq summary{list-style:none;cursor:pointer;padding:var(--s5) 44px var(--s5) 0;position:relative;
  font-family:var(--display);font-size:17.5px;font-weight:700;color:var(--ink);}
.faq summary::-webkit-details-marker{display:none;}
.faq summary:hover{color:var(--brand);}
.faq summary:after{content:"";position:absolute;right:8px;top:30px;width:9px;height:9px;
  border-right:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);transform:rotate(45deg);
  transition:transform .25s var(--ease);}
.faq details[open] summary:after{transform:rotate(-135deg);}
.faq .a{padding:0 60px var(--s5) 0;font-size:15px;max-width:82ch;animation:fadeUp .35s var(--ease);}
.faq .a p:last-child{margin:0;}

/* ---------- 16. form ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;gap:var(--s4);}
.form .full{grid-column:1/-1;}
label.f{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:7px;}
input.f,select.f,textarea.f{width:100%;font-family:var(--body);font-size:15px;color:var(--ink);
  background:var(--bg);border:1px solid var(--line-2);border-radius:var(--r-m);padding:12px 14px;
  outline:none;transition:.2s var(--ease);}
input.f:focus,select.f:focus,textarea.f:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
textarea.f{min-height:128px;resize:vertical;}
select.f option{background:var(--surface);color:var(--ink);}

/* ---------- 17. footer ---------- */
footer{border-top:1px solid var(--line);padding:var(--s7) 0 var(--s6);margin-top:var(--s7);}
footer .top{display:flex;justify-content:space-between;gap:var(--s6);flex-wrap:wrap;align-items:flex-start;}
footer .ent{font-size:13.5px;color:var(--muted);max-width:58ch;}
footer .ent b{color:var(--ink);font-family:var(--display);letter-spacing:.11em;}
footer .links{display:flex;flex-wrap:wrap;gap:var(--s2) var(--s5);}
footer .links a,footer .links button{font-size:13.5px;color:var(--text);background:none;border:0;padding:0;
  font-family:inherit;cursor:pointer;}
footer .links a:hover,footer .links button:hover{color:var(--ink);}
footer .note{margin-top:var(--s5);padding-top:var(--s4);border-top:1px solid var(--line);font-size:12.6px;
  color:var(--muted);max-width:110ch;}

/* ---------- 18. reveal ---------- */
.rv{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.rv.revealed{opacity:1;transform:none;}
.rv[data-d="1"]{transition-delay:.08s;} .rv[data-d="2"]{transition-delay:.16s;}
.rv[data-d="3"]{transition-delay:.24s;} .rv[data-d="4"]{transition-delay:.32s;}

/* ---------- 19. legal pages ---------- */
main.doc{padding:var(--s7) 0 var(--s9);}
main.doc .meta{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin-bottom:var(--s4);}
main.doc h1{font-size:var(--f-h1);max-width:24ch;}
main.doc .lead{margin:var(--s5) 0 0;max-width:78ch;}
main.doc .langbar{margin:var(--s5) 0 0;font-size:13.5px;color:var(--muted);}
.doclayout{display:grid;grid-template-columns:1fr 220px;gap:var(--s7);align-items:start;
  margin-top:var(--s7);}
main.doc article{max-width:820px;}
main.doc article h2{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink);margin:var(--s7) 0 var(--s4);padding-top:var(--s5);
  border-top:1px solid var(--line);scroll-margin-top:92px;}
main.doc article h2:first-child{margin-top:0;border-top:0;padding-top:0;}
main.doc article p{font-size:15.6px;}
main.doc article ul{padding-left:20px;margin:0 0 var(--s4);}
main.doc article li{margin-bottom:8px;font-size:15.4px;}
main.doc article table{border-collapse:collapse;width:100%;margin:0 0 var(--s5);font-size:14px;}
main.doc article th,main.doc article td{border:1px solid var(--line);padding:11px 13px;text-align:left;
  vertical-align:top;}
main.doc article th{background:var(--surface-2);font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink);}
.callout{border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--r-m);
  background:var(--surface-2);padding:var(--s5);margin:0 0 var(--s6);}
.callout p{margin:0 0 10px;font-size:15px;}
.callout p:last-child{margin:0;}
.toc{position:sticky;top:92px;font-size:13.2px;}
.toc .h{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:var(--s3);}
.toc a{display:block;padding:5px 0 5px 12px;border-left:2px solid var(--line);color:var(--muted);
  transition:.2s var(--ease);}
.toc a:hover,.toc a.on{color:var(--ink);border-left-color:var(--brand);text-decoration:none;}

/* ---------- 20. responsive ---------- */
@media (max-width:1080px){
  .herogrid,.globewrap{grid-template-columns:1fr;gap:var(--s7);}
  .stepper{grid-template-columns:1fr;gap:var(--s5);}
  .stepnav{display:grid;grid-template-columns:1fr 1fr;}
  .doclayout{grid-template-columns:1fr;}
  .toc{display:none;}
}
@media (max-width:620px){
  header.nav .navtools .btn{display:none;}
  header.nav .wrap{gap:var(--s3);}
  header.nav .navtools{margin-left:auto;}
  .cloud{max-width:340px;}
  .cloud .w{font-size:11px;padding:5px 10px;}
  .cloud .core{width:78px;height:78px;font-size:10.5px;}
}
@media (max-width:820px){
  .rotator > span{white-space:normal;}
  :root{--f-display:clamp(30px,8.4vw,40px);}
  .navlinks{display:none;}
  section{padding:var(--s8) 0;}
  .bento{grid-template-columns:1fr;}
  .b2,.b3,.b4,.b6{grid-column:span 1;}
  .check,.form{grid-template-columns:1fr;}
  .flow .three{grid-template-columns:1fr;}
  .stepnav{grid-template-columns:1fr;}
  .trust{gap:var(--s5);}
  .wrap{padding:0 var(--s4);}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;}
  .rv{opacity:1;transform:none;}
}

/* ============================================================================
   v4.2 - glass surfaces, signature spine, cursor light, corridor graphics
   ============================================================================ */

/* mouse-following frosted light */
.cursorlight{position:fixed;left:0;top:0;width:520px;height:520px;margin:-260px 0 0 -260px;
  border-radius:50%;pointer-events:none;z-index:2;opacity:0;transition:opacity .5s var(--ease);
  background:radial-gradient(circle,var(--glow-1),transparent 62%);filter:blur(40px);}
.cursorlight.on{opacity:.9;}

/* glass surfaces: blocks stop being opaque boxes */
.card,.statband,.method,.pipe .step,.flow .row,.beam > .inner,.stepnav button[aria-selected="true"]{
  background:color-mix(in srgb,var(--surface) 30%,transparent);
  backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3);
}
.chip,.badge,.themeseg,.globe .pin,.cloud .w{
  background:color-mix(in srgb,var(--surface) 45%,transparent);
  backdrop-filter:blur(14px) saturate(1.25);-webkit-backdrop-filter:blur(14px) saturate(1.25);
}
.card .ic{background:color-mix(in srgb,var(--brand-soft) 80%,transparent);}

/* thin gradient frame that lights up on approach */
.card:after,.statband:after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  pointer-events:none;opacity:0;transition:opacity .35s var(--ease);
  background:linear-gradient(130deg,var(--brand),transparent 42%,transparent 60%,var(--violet));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  mask-composite:exclude;}
.card:hover:after{opacity:.9;}
.statband{position:relative;}
.statband:hover:after{opacity:.7;}

/* signature: oversized outlined section numeral */
section[data-num]{position:relative;}
section[data-num]:after{content:attr(data-num);position:absolute;right:4vw;top:34px;
  font-family:var(--display);font-size:210px;font-weight:800;line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1px var(--line-2);opacity:.45;pointer-events:none;z-index:0;}
@media (max-width:1200px){section[data-num]:after{display:none;}}

/* signature: travelling pulse on the rail */
section[data-rail] > .wrap{position:relative;}
section[data-rail] > .wrap > .pulse{position:absolute;left:-5px;width:8px;height:8px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 12px var(--brand);animation:railrun 4.5s var(--ease) infinite;}
@keyframes railrun{0%{top:8px;opacity:0;}12%{opacity:1;}88%{opacity:1;}100%{top:calc(100% - 12px);opacity:0;}}
@media (max-width:1320px){section[data-rail] > .wrap > .pulse{display:none;}}

/* corridor graphic */
.corridor{width:100%;height:auto;overflow:visible;}
.corridor .node{fill:color-mix(in srgb,var(--surface) 70%,transparent);stroke:var(--line-2);stroke-width:1;}
.corridor .node.hot{stroke:var(--brand);}
.corridor .lbl{font-family:var(--display);font-size:13px;font-weight:700;fill:var(--ink);}
.corridor .sub{font-family:var(--mono);font-size:9px;letter-spacing:.12em;fill:var(--muted);}
.corridor .link{fill:none;stroke:var(--line-2);stroke-width:1.4;}
.corridor .beamline{fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;
  stroke-dasharray:16 260;animation:corridorrun 3.4s linear infinite;}
.corridor .beamline.d2{animation-delay:.9s;stroke:var(--violet);}
.corridor .beamline.d3{animation-delay:1.8s;}
@keyframes corridorrun{to{stroke-dashoffset:-276;}}
.corridor .tag{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;fill:var(--brand);}

/* rails chips inside coverage tabs */
.rails{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:var(--s4);}
.rails .chip{font-family:var(--mono);font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;padding:6px 12px;}

/* soon strip */
.soon{display:flex;flex-wrap:wrap;gap:8px;}
.soon span{padding:7px 14px;border-radius:var(--r-full);border:1px dashed var(--line-2);font-size:13px;
  color:var(--muted);}

/* aurora CTA */
.aurora{position:relative;border-radius:var(--r-xl);overflow:hidden;padding:var(--s8) var(--s7);
  border:1px solid var(--line);isolation:isolate;}
.aurora:before{content:"";position:absolute;inset:-40%;z-index:-1;
  background:conic-gradient(from 0deg,var(--glow-1),transparent 30%,var(--glow-2) 55%,transparent 78%,var(--glow-1));
  animation:spin 22s linear infinite;filter:blur(60px);}
.aurora:after{content:"";position:absolute;inset:0;z-index:-1;
  background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(18px);}