/* ============================================================
   RiseNet — Connecting Syria's Future
   3D tunnel + progressive story nodes + detail panel.
   ============================================================ */

:root {
  --bg:#04060d; --bg-2:#060912; --surface:#0a1020; --surface-2:#0c1430;
  --line:rgba(120,162,235,0.12); --line-2:rgba(120,162,235,0.24);
  --blue:#2f7dff; --blue-2:#4f9bff; --cyan:#34e3ff;
  --white:#f3f7ff; --text:#aab8d6; --muted:#65749a;
  --glow:rgba(47,125,255,0.45); --glow-cyan:rgba(52,227,255,0.4);
  --font-display:"Space Grotesk","Inter",system-ui,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",monospace;
  --ease:cubic-bezier(0.22,1,0.36,1);
  --safe-t:env(safe-area-inset-top,0px); --safe-b:env(safe-area-inset-bottom,0px);
  --safe-l:env(safe-area-inset-left,0px); --safe-r:env(safe-area-inset-right,0px);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{height:100%;overflow-x:hidden;}
body{
  min-height:100%;font-family:var(--font-body);background:var(--bg);color:var(--text);
  line-height:1.6;font-size:16px;overflow-x:hidden;overflow-y:auto;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  -webkit-tap-highlight-color:transparent;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
body::-webkit-scrollbar{display:none;}
html.locked,html.locked body{overflow:hidden;}
img,svg,canvas{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
button{font-family:inherit;}
::selection{background:var(--blue);color:#fff;}

body::before{
  content:"";position:fixed;inset:0;z-index:-3;
  background:
    radial-gradient(1100px 700px at 50% -8%, rgba(47,125,255,0.12), transparent 60%),
    radial-gradient(900px 600px at 88% 10%, rgba(52,227,255,0.06), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
}
.grain{position:fixed;inset:0;z-index:70;pointer-events:none;opacity:0.03;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
.skip-link{position:absolute;left:-999px;top:0;z-index:2000;background:var(--blue);color:#fff;padding:.7rem 1.1rem;border-radius:0 0 8px 0;font:600 .85rem/1 var(--font-body);}
.skip-link:focus{left:0;}

@keyframes spin{to{transform:rotate(360deg);}}
.brand__accent{color:var(--blue-2);}

.scroll-track{position:relative;width:1px;height:1px;z-index:0;pointer-events:none;opacity:0;}

/* ---------- typography ---------- */
.eyebrow{display:flex;align-items:center;gap:.7rem;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;color:var(--blue-2);margin-bottom:1rem;}
.eyebrow__idx{color:var(--cyan);}
.eyebrow__rule{display:inline-block;width:34px;height:1px;background:linear-gradient(90deg,var(--blue),transparent);}
.eyebrow--center{justify-content:center;}
.eyebrow--center .eyebrow__rule:last-child{background:linear-gradient(90deg,transparent,var(--blue));}

.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:46px;font:600 .9rem/1 var(--font-body);padding:.9rem 1.4rem;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .35s var(--ease),box-shadow .35s,background .35s,border-color .35s,color .35s;white-space:nowrap;}
.btn--primary{background:linear-gradient(180deg,var(--blue-2),var(--blue));color:#fff;box-shadow:0 6px 24px -8px var(--glow),inset 0 1px 0 rgba(255,255,255,0.25);}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 36px -8px var(--glow);}
.btn--ghost{color:var(--white);border-color:var(--line-2);background:rgba(255,255,255,0.02);}
.btn--ghost:hover{border-color:var(--blue);background:rgba(47,125,255,0.08);transform:translateY(-2px);}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

/* ============================================================
   CHROME — logo · fullscreen · credit
   ============================================================ */
.logo{position:fixed;top:max(1rem,var(--safe-t));left:max(1.1rem,var(--safe-l));z-index:100;display:inline-flex;align-items:center;gap:.55rem;}
.logo__mark{width:26px;height:26px;color:var(--blue-2);filter:drop-shadow(0 0 6px var(--glow));}
.logo__mark svg{width:100%;height:100%;animation:spin 26s linear infinite;}
.logo__word{font:600 1.16rem/1 var(--font-display);color:var(--white);}

.fs-toggle{position:fixed;top:max(1rem,var(--safe-t));right:max(1.1rem,var(--safe-r));z-index:100;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line-2);background:rgba(6,11,24,0.5);color:var(--white);cursor:pointer;backdrop-filter:blur(10px);transition:border-color .25s,background .25s,transform .25s;}
.fs-toggle:hover{border-color:var(--blue);background:rgba(47,125,255,0.12);}
.fs-toggle:active{transform:scale(.92);}
.fs-toggle svg{width:18px;height:18px;}
.fs-toggle .fs-exit{display:none;}
body.is-fs .fs-toggle .fs-enter{display:none;}
body.is-fs .fs-toggle .fs-exit{display:block;}
.fs-unsupported .fs-toggle{display:none;}

.credit{position:fixed;left:max(1.2rem,var(--safe-l));bottom:max(1rem,var(--safe-b));z-index:50;font:500 .66rem/1 var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);opacity:.7;}

/* ============================================================
   TUNNEL
   ============================================================ */
.stage{position:fixed;inset:0;z-index:1;pointer-events:none;}
#sceneCanvas{position:fixed;inset:0;width:100%;height:100%;}

/* ============================================================
   STORY NODES — floating interactive cards inside the tunnel
   ============================================================ */
.nodes{position:fixed;inset:0;z-index:40;pointer-events:none;}
.node{
  position:fixed;left:0;top:0;transform-origin:center center;will-change:transform,opacity;
  display:flex;align-items:center;gap:.9rem;min-height:48px;padding:.8rem 1.05rem;border-radius:18px;
  min-width:236px;max-width:300px;text-align:left;cursor:pointer;pointer-events:auto;
  background:linear-gradient(180deg,rgba(11,20,44,0.82),rgba(7,12,26,0.78));
  border:1px solid rgba(79,155,255,0.34);
  box-shadow:0 18px 50px -24px rgba(0,0,0,0.92),0 0 32px -8px rgba(47,125,255,0.45);
  backdrop-filter:blur(12px);color:var(--white);
  opacity:0;visibility:hidden;
  transition:border-color .3s,box-shadow .3s,background .3s;
}
.node:hover,.node:focus-visible{border-color:var(--blue-2);background:linear-gradient(180deg,rgba(14,26,56,0.9),rgba(8,14,30,0.86));box-shadow:0 22px 60px -22px rgba(0,0,0,0.95),0 0 44px -6px var(--glow);outline:none;}
.node.is-focus{border-color:rgba(52,227,255,0.55);box-shadow:0 22px 60px -22px rgba(0,0,0,0.95),0 0 50px -6px var(--glow-cyan);}
.node__idx{flex:none;font:600 1.15rem/1 var(--font-mono);color:var(--cyan);letter-spacing:.04em;width:30px;}
.node__txt{display:flex;flex-direction:column;gap:.22rem;min-width:0;}
.node__title{font:600 1.02rem/1.12 var(--font-display);color:var(--white);letter-spacing:-0.01em;}
.node__tag{font:500 .66rem/1 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.node__go{margin-left:auto;flex:none;font:600 .66rem/1 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--blue-2);}

/* scroll hint (desktop) */
.scroll-hint{position:fixed;left:50%;bottom:max(1.3rem,var(--safe-b));transform:translateX(-50%);z-index:50;display:flex;flex-direction:column;align-items:center;gap:.5rem;font:500 .66rem/1 var(--font-mono);letter-spacing:.24em;text-transform:uppercase;color:var(--muted);transition:opacity .5s var(--ease);}
.scroll-hint svg{width:15px;height:23px;color:var(--blue-2);}
.scroll-hint__dot{animation:hintdot 1.8s var(--ease) infinite;}
@keyframes hintdot{0%{transform:translateY(0);opacity:1}60%{transform:translateY(7px);opacity:0}100%{opacity:0}}
.scroll-hint.is-hidden{opacity:0;pointer-events:none;}

/* ============================================================
   DESKTOP QUICK-NAV DOCK
   ============================================================ */
.dock{position:fixed;left:max(.8rem,var(--safe-l));top:50%;transform:translateY(-50%);z-index:85;display:flex;flex-direction:column;gap:.45rem;}
.dock__b{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:.12rem;padding:.5rem .8rem;border-radius:14px;cursor:pointer;min-width:116px;min-height:44px;overflow:hidden;justify-content:center;
  border:1px solid var(--line-2);background:linear-gradient(180deg,rgba(11,19,40,0.6),rgba(7,12,26,0.5));backdrop-filter:blur(12px);color:var(--muted);
  transition:transform .3s var(--ease),border-color .3s,background .3s,box-shadow .3s;}
.dock__b::after{content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .3s;background:radial-gradient(120% 120% at 0% 50%,rgba(47,125,255,0.18),transparent 70%);}
.dock__b:hover{transform:translateX(5px);border-color:var(--blue);box-shadow:0 14px 34px -20px var(--glow);}
.dock__b:hover::after{opacity:1;}
.dock__b:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.dock__abbr{position:relative;font:600 .8rem/1 var(--font-mono);letter-spacing:.12em;color:var(--white);}
.dock__name{position:relative;font:500 .58rem/1.1 var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);white-space:nowrap;}
.dock__b.is-active{border-color:rgba(52,227,255,0.5);box-shadow:0 0 22px rgba(52,227,255,0.18);}
.dock__b.is-active .dock__abbr{color:var(--cyan);}

/* ============================================================
   MOBILE BOTTOM-SHEET NAV
   ============================================================ */
.mnav-trigger{display:none;}
.navsheet,.navsheet-scrim{display:none;}

/* ============================================================
   DETAIL PANEL  (right side on desktop)
   ============================================================ */
.modal-backdrop{position:fixed;inset:0;z-index:79;background:rgba(3,6,13,0.4);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:opacity .4s var(--ease),visibility .4s;}
.modal-backdrop.is-open{opacity:1;visibility:visible;}

.bubbles{position:fixed;inset:0;z-index:80;pointer-events:none;}
.bubble{
  position:fixed;top:1rem;right:1rem;bottom:1rem;width:min(440px,42vw);
  display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
  padding:clamp(1.7rem,2.4vw,2.6rem);border-radius:24px;
  background:linear-gradient(180deg,rgba(12,20,42,0.94),rgba(7,12,26,0.92));
  border:1px solid var(--line-2);
  box-shadow:0 40px 100px -36px rgba(0,0,0,0.9),inset 0 1px 0 rgba(255,255,255,0.06);
  backdrop-filter:blur(18px) saturate(130%);
  transform:translateX(calc(100% + 1.5rem));opacity:0;visibility:hidden;pointer-events:none;
  transition:transform .5s var(--ease),opacity .45s var(--ease),visibility .5s;
}
.bubble.is-open{transform:none;opacity:1;visibility:visible;pointer-events:auto;}
.bubble--wide{width:min(520px,46vw);}
.bubble>*{position:relative;}

.bubble__close{position:absolute;top:.85rem;right:.85rem;z-index:5;width:44px;height:44px;border-radius:50%;border:1px solid var(--line-2);background:rgba(8,14,28,0.7);color:var(--text);font-size:1.5rem;line-height:1;cursor:pointer;display:grid;place-items:center;transition:color .25s,border-color .25s,background .25s,transform .25s;}
.bubble__close:hover{color:var(--white);border-color:var(--blue);background:rgba(47,125,255,0.14);transform:rotate(90deg);}

.bubble__title{font-family:var(--font-display);font-weight:600;font-size:clamp(1.55rem,2.6vw,2.2rem);line-height:1.08;letter-spacing:-0.02em;color:var(--white);margin-bottom:1rem;padding-right:2.6rem;text-wrap:balance;}
.bubble__title--big{font-size:clamp(1.8rem,3vw,2.6rem);}
.bubble__lead{font-size:clamp(1rem,1.3vw,1.08rem);color:var(--text);margin-bottom:1.3rem;}
.bubble__actions{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.1rem;}
.bubble--center{text-align:center;}
.bubble--center .bubble__title{padding-right:0;}
.travel-hint{margin-top:1.5rem;font:500 .72rem/1.4 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:.6rem;}
.travel-hint__key{color:var(--cyan);font-size:1rem;}

/* ---- detail internals ---- */
.metric-jump{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap;margin-bottom:1.4rem;}
.mj{display:flex;flex-direction:column;gap:.45rem;}
.mj__tag{align-self:flex-start;font:600 .64rem/1 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:.38rem .55rem;border:1px solid var(--line-2);border-radius:6px;}
.mj__tag--t{color:var(--cyan);border-color:rgba(52,227,255,0.3);}
.mj__num{font:600 1.9rem/1 var(--font-display);color:var(--white);}
.mj__num b{color:#cfe0ff;}
.mj__num--t b{color:var(--cyan);}
.mj__arrow{font:400 1.6rem/1 var(--font-display);color:var(--blue-2);}
.chips{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem;}
.chips li{position:relative;padding:.8rem .8rem .8rem 1.7rem;background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:10px;font-size:.9rem;color:var(--text);}
.chips li::before{content:"";position:absolute;left:.75rem;top:1.1rem;width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 8px var(--glow);}

.steps{display:flex;flex-direction:column;gap:.1rem;}
.steps li{display:flex;align-items:center;gap:1rem;padding:.55rem 0;position:relative;}
.steps li b{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font:600 .78rem/1 var(--font-mono);color:var(--blue-2);background:var(--surface);border:1px solid var(--line-2);}
.steps li span{font:600 1.04rem/1.2 var(--font-display);color:var(--white);}
.steps li:not(:last-child)::after{content:"";position:absolute;left:19.5px;top:44px;width:1px;height:13px;background:linear-gradient(180deg,var(--blue-2),transparent);}
.steps__end b{color:var(--cyan);border-color:rgba(52,227,255,0.4);box-shadow:0 0 16px var(--glow-cyan);}

.minis{display:grid;grid-template-columns:1fr;gap:.8rem;}
.mini{background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:14px;padding:1.1rem;transition:border-color .3s,transform .3s var(--ease);}
.mini:hover{border-color:var(--line-2);transform:translateY(-2px);}
.mini__top{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.7rem;}
.mini__top span{font:600 .62rem/1 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);}
.mini h4{font:600 1.06rem/1.15 var(--font-display);color:var(--white);margin-bottom:.35rem;}
.mini__org{font:500 .76rem/1 var(--font-mono);color:var(--blue-2);margin-bottom:.6rem;}
.mini__d{font-size:.86rem;color:var(--muted);}
.tag{font:600 .58rem/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;padding:.42rem .55rem;border-radius:999px;white-space:nowrap;}
.tag--b{color:#cfe1ff;background:rgba(47,125,255,0.14);border:1px solid rgba(47,125,255,0.34);}
.tag--c{color:#c6f6ff;background:rgba(52,227,255,0.12);border:1px solid rgba(52,227,255,0.34);}
.tag--w{color:#e8eefc;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.22);}

.specs{display:flex;flex-direction:column;gap:.85rem;}
.spec{display:flex;gap:1rem;align-items:flex-start;background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.2rem;}
.spec__code{flex:none;font:600 .9rem/1 var(--font-mono);color:var(--cyan);padding:.55rem .6rem;border:1px solid rgba(52,227,255,0.25);border-radius:8px;background:rgba(52,227,255,0.05);min-width:74px;text-align:center;}
.spec h4{font:600 1.02rem/1.2 var(--font-display);color:var(--white);margin-bottom:.3rem;}
.spec p{font-size:.88rem;color:var(--muted);}
.meter{position:relative;height:8px;border-radius:5px;background:rgba(255,255,255,0.05);margin-top:.9rem;max-width:260px;}
.meter i{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:5px;background:linear-gradient(90deg,var(--blue),var(--cyan));box-shadow:0 0 12px var(--glow);transition:width 1.3s var(--ease);}
.bubble.is-open .meter i{width:var(--v);}
.meter b{position:absolute;right:0;top:-1.25rem;font:600 .62rem/1 var(--font-mono);color:#ff8197;}

.phases{display:flex;flex-direction:column;gap:.8rem;}
.phases li{background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:14px;padding:1.1rem 1.2rem;}
.phases__i{font:600 .64rem/1 var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--cyan);}
.phases h4{font:600 1.08rem/1.15 var(--font-display);color:var(--white);margin:.55rem 0 .4rem;}
.phases em{display:inline-block;font:600 .6rem/1 var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--blue-2);font-style:normal;padding:.32rem .5rem;border:1px solid var(--line-2);border-radius:6px;margin-bottom:.6rem;}
.phases p{font-size:.86rem;color:var(--muted);}

.grid6{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem;}
.grid6 div{background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:14px;padding:1.1rem;}
.grid6 b{display:block;font:600 1.7rem/1 var(--font-display);color:var(--white);letter-spacing:-0.02em;margin-bottom:.3rem;}
.grid6 b .num{color:var(--blue-2);}
.grid6 span{font:500 .74rem/1.35 var(--font-mono);letter-spacing:.02em;color:var(--muted);}
.note{margin-top:1.2rem;font:500 .74rem/1.5 var(--font-mono);color:var(--muted);}
.outro__tag{margin-top:1.4rem;font:500 .74rem/1.6 var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--blue-2);}

/* ============================================================
   START SCREEN
   ============================================================ */
.intro{position:fixed;inset:0;z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(120% 120% at 50% 50%,#060b18 0%,#03060d 70%);transition:opacity .7s var(--ease),visibility .7s;}
.intro.is-done{opacity:0;visibility:hidden;pointer-events:none;}
.intro__canvas{position:absolute;inset:0;width:100%;height:100%;}
.intro__brand{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center;padding-inline:1.2rem;}
.intro__word{font:600 clamp(2.6rem,9vw,5.5rem)/1 var(--font-display);letter-spacing:.02em;color:var(--white);text-shadow:0 0 46px rgba(47,125,255,0.5);opacity:0;transform:translateY(16px);filter:blur(8px);transition:opacity 1s var(--ease),transform 1s var(--ease),filter 1s var(--ease);}
.intro__line{width:0;height:1px;background:linear-gradient(90deg,transparent,var(--blue-2),transparent);transition:width 1.1s var(--ease) .15s;}
.intro__tag{font:500 .78rem/1 var(--font-mono);letter-spacing:.34em;text-transform:uppercase;color:var(--muted);opacity:0;transform:translateY(8px);transition:opacity 1s var(--ease) .25s,transform 1s var(--ease) .25s;}
.intro__start{margin-top:1.6rem;min-height:52px;display:inline-flex;align-items:center;gap:.6rem;font:600 1rem/1 var(--font-display);letter-spacing:.01em;color:#fff;padding:1.05rem 2rem;border-radius:999px;border:1px solid rgba(255,255,255,0.18);background:linear-gradient(180deg,var(--blue-2),var(--blue));box-shadow:0 10px 40px -10px var(--glow),inset 0 1px 0 rgba(255,255,255,0.3);cursor:pointer;opacity:0;transform:translateY(12px);transition:opacity .8s var(--ease) .35s,transform .8s var(--ease) .35s,box-shadow .35s;}
.intro__start svg{width:19px;height:19px;transition:transform .3s var(--ease);}
.intro__start:hover{box-shadow:0 16px 52px -10px var(--glow);}
.intro__start:hover svg{transform:translateX(4px);}
.intro__start:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.intro__note{font:500 .68rem/1 var(--font-mono);letter-spacing:.22em;text-transform:uppercase;color:var(--muted);opacity:0;transition:opacity .8s ease .5s;}
.intro.is-revealed .intro__word{opacity:1;transform:none;filter:blur(0);}
.intro.is-revealed .intro__line{width:min(300px,62vw);}
.intro.is-revealed .intro__tag,.intro.is-revealed .intro__start{opacity:1;transform:none;}
.intro.is-revealed .intro__note{opacity:.8;}

/* ============================================================
   MOBILE  (≤ 760px)
   ============================================================ */
@media (max-width:760px){
  .logo__word{display:none;}
  .dock,.credit,.scroll-hint{display:none;}

  /* nodes: bigger + more tappable, less clutter */
  .nodes{z-index:40;}
  .node{min-width:min(84vw,330px);max-width:88vw;min-height:60px;padding:1rem 1.15rem;gap:1rem;border-radius:20px;}
  .node__idx{font-size:1.3rem;width:34px;}
  .node__title{font-size:1.12rem;}
  .node__tag{font-size:.7rem;}

  /* detail becomes a bottom sheet */
  .bubble{top:auto;left:0;right:0;bottom:0;width:100%!important;max-height:88svh;max-height:88vh;
    padding:1.6rem clamp(1.2rem,5vw,1.8rem) calc(1.6rem + var(--safe-b));
    border-radius:24px 24px 0 0;border-bottom:none;
    transform:translateY(100%);}
  .bubble.is-open{transform:none;}
  .bubble::before{content:"";position:sticky;top:0;display:block;width:42px;height:4px;margin:-.4rem auto 1rem;border-radius:99px;background:rgba(160,185,230,0.4);}
  .bubble__title{font-size:clamp(1.7rem,6.4vw,2.2rem);padding-right:3rem;}
  .bubble__lead{font-size:1.05rem;}
  .bubble__close{top:1rem;right:1rem;}
  .chips,.grid6,.minis,.phases{grid-template-columns:1fr;}
  .grid6{grid-template-columns:repeat(2,1fr);}
  .metric-jump{gap:.7rem;}
  .mj__arrow{transform:rotate(90deg);}
  .mj__num{font-size:2.1rem;}

  /* mobile bottom-sheet nav */
  .mnav-trigger{display:inline-flex;align-items:center;gap:.55rem;position:fixed;left:50%;bottom:calc(1rem + var(--safe-b));transform:translateX(-50%);z-index:90;
    min-height:48px;padding:.7rem 1.4rem;border-radius:999px;cursor:pointer;
    font:600 .8rem/1 var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--white);
    background:rgba(8,14,30,0.78);border:1px solid var(--line-2);backdrop-filter:blur(14px);box-shadow:0 14px 40px -18px rgba(0,0,0,0.9);}
  .mnav-trigger__grip{width:16px;height:2px;background:var(--blue-2);box-shadow:0 5px 0 var(--blue-2),0 -5px 0 var(--blue-2);}
  body.detail-open .mnav-trigger{opacity:0;pointer-events:none;}

  .navsheet-scrim{display:block;position:fixed;inset:0;z-index:95;background:rgba(3,6,13,0.5);opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s;}
  .navsheet-scrim.is-open{opacity:1;visibility:visible;}
  .navsheet{display:block;position:fixed;left:0;right:0;bottom:0;z-index:96;
    background:linear-gradient(180deg,rgba(12,20,42,0.97),rgba(7,12,26,0.97));border:1px solid var(--line-2);border-bottom:none;border-radius:24px 24px 0 0;
    padding:1rem clamp(1rem,5vw,1.6rem) calc(1.4rem + var(--safe-b));max-height:82svh;max-height:82vh;overflow-y:auto;-webkit-overflow-scrolling:touch;
    transform:translateY(100%);transition:transform .4s var(--ease);box-shadow:0 -30px 80px -30px rgba(0,0,0,0.9);}
  .navsheet.is-open{transform:none;}
  .navsheet__handle{width:42px;height:4px;border-radius:99px;background:rgba(160,185,230,0.4);margin:.2rem auto 1rem;}
  .navsheet__title{font:600 .72rem/1 var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:.9rem;padding-inline:.3rem;}
  .navsheet__list{display:flex;flex-direction:column;gap:.35rem;}
  .navsheet__row{display:flex;align-items:center;gap:1rem;width:100%;min-height:56px;padding:.85rem 1rem;border-radius:14px;cursor:pointer;text-align:left;
    background:rgba(255,255,255,0.02);border:1px solid var(--line);color:var(--white);transition:background .2s,border-color .2s;}
  .navsheet__row:active{background:rgba(47,125,255,0.14);}
  .navsheet__row b{font:600 .9rem/1 var(--font-mono);color:var(--cyan);width:26px;}
  .navsheet__row span{font:600 1.02rem/1.1 var(--font-display);color:var(--white);}

  .logo{top:max(.8rem,var(--safe-t));left:max(.9rem,var(--safe-l));}
  .fs-toggle{top:max(.8rem,var(--safe-t));right:max(.9rem,var(--safe-r));}
}

@media (max-width:380px){ .grid6{grid-template-columns:1fr;} }

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  .intro{display:none;}
  .logo__mark svg{animation:none;}
  .nodes,.scroll-hint{display:none;}
  .scroll-hint__dot{animation:none;}
  .bubble{transition:opacity .25s,visibility .25s;}
  .node{transition:none;}
}