/* ============================================================
   ATC Guide — conversational concept
   Navy-black canvas · gold presence · luminous off-white
   ============================================================ */
:root{
  --bg:#06080f;
  --bg-2:#0a0e1c;
  --ink:#eef1fa;
  --muted:#9098b4;
  --muted-2:#8e96b8;        /* AA on navy-black (was #666e8c, 3.49–3.98:1) — subtitle, dock hint, input/ghost prompt, chips */
  --navy:#1b2d54;
  --navy-2:#223768;
  --gold:#e7a93b;
  --gold-soft:#f4cd83;
  --gold-deep:#b9812a;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);
  --glow:rgba(231,169,59,.35);
  --r:20px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:880px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Plus Jakarta Sans",system-ui,sans-serif;
  font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;
  overflow:hidden;
}
h1,h2,h3,h4{font-family:"Space Grotesk","Plus Jakarta Sans",sans-serif;font-weight:600;letter-spacing:-.02em;margin:0;line-height:1.04}
p{margin:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.mono{font-family:"Space Mono",monospace}
::selection{background:var(--gold);color:#1a1206}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.08);border-radius:10px;border:3px solid var(--bg)}

/* ---------- ambient background ---------- */
.aura{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.aura span{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;mix-blend-mode:screen}
.aura .a1{width:60vw;height:60vw;left:-15vw;top:-20vw;background:radial-gradient(circle,rgba(27,45,84,.9),transparent 65%);animation:drift1 26s var(--ease) infinite alternate}
.aura .a2{width:48vw;height:48vw;right:-12vw;top:-6vw;background:radial-gradient(circle,rgba(231,169,59,.4),transparent 62%);animation:drift2 32s var(--ease) infinite alternate}
.aura .a3{width:52vw;height:52vw;left:18vw;bottom:-26vw;background:radial-gradient(circle,rgba(34,55,104,.8),transparent 64%);animation:drift3 30s var(--ease) infinite alternate}
@keyframes drift1{to{transform:translate(8vw,10vh) scale(1.15)}}
@keyframes drift2{to{transform:translate(-6vw,8vh) scale(1.2)}}
@keyframes drift3{to{transform:translate(10vw,-8vh) scale(1.1)}}
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;mix-blend-mode:soft-light;
  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='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E")}
.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(120% 90% at 50% 0%,transparent 55%,rgba(0,0,0,.55))}

/* ---------- app shell ---------- */
.app{position:relative;z-index:2;height:100%;display:flex;flex-direction:column}

/* top bar */
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 26px;flex:none}
.bar-brand{display:flex;align-items:center;gap:12px}
.bar-logo{width:54px;height:54px;border-radius:50%;background:#0b1733 center/cover no-repeat;background-image:url('/img/atc-logo.png');box-shadow:0 0 0 1px var(--line),0 4px 16px rgba(0,0,0,.5);flex:none}
.bar-name{font-family:"Space Grotesk";font-weight:600;font-size:15px;letter-spacing:-.01em;line-height:1}
.bar-name .ai-dot{display:inline;color:var(--gold)}
.bar-name span{display:block;font-family:"Space Mono";font-weight:400;font-size:9.5px;letter-spacing:.24em;color:var(--muted-2);margin-top:3px}
.bar-right{display:flex;align-items:center;gap:8px}
.bar-link{font-size:13px;color:var(--muted);padding:9px 14px;border-radius:999px;transition:.2s var(--ease);font-weight:500}
.bar-link:hover{color:var(--ink);background:var(--glass)}
.bar-link.ghost{border:1px solid var(--line-2)}
.bar-link.ghost:hover{border-color:var(--gold);color:var(--gold-soft);background:transparent}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 0 var(--glow);animation:pulse 2.4s infinite;display:inline-block;margin-right:7px;vertical-align:middle}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--glow)}70%{box-shadow:0 0 0 8px transparent}100%{box-shadow:0 0 0 0 transparent}}

/* ---------- thread ---------- */
.thread{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;scroll-behavior:smooth;padding:0 22px 26px;display:flex;flex-direction:column}
.thread-inner{max-width:var(--maxw);width:100%;margin:0 auto;display:flex;flex-direction:column;gap:30px;padding-bottom:14px;flex:1;min-height:0}

/* ============================================================
   HERO — split two-column: full-length robot LEFT, content RIGHT
   Fills exactly one viewport (the .hero is flex:1 of the thread),
   no scroll. Robot is a full-height imposing presence anchored to
   the left; copy is vertically centred and left-aligned on the right.
   ============================================================ */
.hero{min-height:0;flex:1}
/* Once a conversation starts the intro hero is removed so its full-height robot can't overlap the thread. */
.app.chatting .hero{display:none}
.hero-split{
  display:grid;
  grid-template-columns:minmax(0,44%) minmax(0,1fr);
  align-items:stretch;
  gap:clamp(20px,3vw,56px);
  width:100%;
}

/* LEFT column — full-height stage for the robot */
.hero-art{
  position:relative;
  min-height:0;
  display:flex;
  align-items:flex-end;        /* robot stands on the floor of the column */
  justify-content:center;
  /* soft floor glow so the robot rises out of light, not a hard edge */
}
.hero-art::after{
  content:"";position:absolute;left:50%;bottom:2%;transform:translateX(-50%);
  width:82%;height:26%;border-radius:50%;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(231,169,59,.22),transparent 70%);
  filter:blur(12px);
}

/* bot stage fills the column height — large, imposing, full-length */
.bot-wrap{
  position:relative;
  width:100%;
  height:100%;
  flex:none;
  display:grid;place-items:center;
  background:radial-gradient(ellipse 62% 56% at 50% 52%, rgba(0,7,27,.85) 0%, rgba(0,7,27,.55) 46%, transparent 74%);
}
.bot-glow{position:absolute;width:min(86%,460px);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(231,169,59,.28),rgba(232,99,31,.1) 46%,transparent 66%);filter:blur(14px);animation:breathe 5s var(--ease) infinite}
/* full-length mascot — fills the column, anchored to the bottom so it reads
   as standing tall rather than floating. object-fit:contain keeps it intact. */
.bot-pose{position:absolute;z-index:2;width:100%;height:100%;object-fit:contain;object-position:center bottom;left:0;top:0;transform:none;
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 44%, #000 64%, transparent 92%);
          mask-image:radial-gradient(ellipse 70% 80% at 50% 44%, #000 64%, transparent 92%);
  filter:drop-shadow(0 30px 50px rgba(0,0,0,.55));opacity:0;transition:opacity .5s var(--ease)}
.bot-pose.show{opacity:1}
.bot-pose.idle{animation:botfloat 6s var(--ease) infinite}
@keyframes botfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
.app.thinking .bot-glow{animation-duration:1.4s;background:radial-gradient(circle,rgba(231,169,59,.4),rgba(232,99,31,.16) 46%,transparent 66%)}
.orb-halo{position:absolute;width:min(64%,340px);aspect-ratio:1;border-radius:50%;border:1px solid rgba(231,169,59,.18);animation:halo 5s var(--ease) infinite;z-index:1}
.orb-halo.h2{animation-delay:1.6s}
@keyframes breathe{50%{transform:scale(1.05)}}
@keyframes halo{0%{transform:scale(.7);opacity:.45}100%{transform:scale(1.5);opacity:0}}

/* RIGHT column — vertically centred, left-aligned content */
.hero-copy{
  min-width:0;
  display:flex;flex-direction:column;justify-content:center;
  text-align:left;
  gap:clamp(8px,1.4vh,16px);
  padding-right:clamp(0px,1vw,12px);
}
.hero-kicker{font-family:"Space Mono";font-size:12px;letter-spacing:.04em;color:var(--muted)}
.hero-kicker b{color:var(--gold-soft);font-weight:700}
.hero h1{font-size:clamp(34px,5.4vw,60px);letter-spacing:-.035em;font-weight:600;line-height:1.02}
.hero h1 .grad{background:linear-gradient(100deg,var(--gold-soft),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .sub{color:var(--muted);font-size:clamp(15px,1.7vh,18px);max-width:540px;line-height:1.45}
.cursor{display:inline-block;width:2px;height:1em;background:var(--gold);vertical-align:-2px;margin-left:2px;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

/* starter chips — left-aligned under the copy */
.starter{display:flex;flex-wrap:wrap;gap:9px;justify-content:flex-start;max-width:600px;margin-top:4px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:11px 16px;border-radius:999px;background:var(--glass);border:1px solid var(--line);color:var(--ink);font-size:13.5px;font-weight:500;transition:.22s var(--ease)}
.chip:hover{background:var(--glass-2);border-color:var(--line-2);transform:translateY(-2px)}
.chip .ci{width:15px;height:15px;color:var(--gold-soft);flex:none}
.chip.spark{border-color:rgba(231,169,59,.4)}
.chip.spark .ci{color:var(--gold)}

/* ---------- messages ---------- */
.msg{display:flex;gap:14px;opacity:0;transform:translateY(16px);animation:rise .55s var(--ease) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.msg.user{justify-content:flex-end}
.bubble-user{background:linear-gradient(120deg,rgba(231,169,59,.18),rgba(231,169,59,.08));border:1px solid rgba(231,169,59,.28);color:var(--ink);padding:13px 18px;border-radius:18px 18px 4px 18px;font-size:15px;max-width:78%;font-weight:500}
.msg.bot{flex-direction:row}
/* ---- TSF.ai mascot head (chat avatar) ---- */
/* ---- TSF.ai chat avatar — real rendered face ---- */
.bot-orb{width:46px;height:46px;flex:none;margin-top:2px;position:relative;border-radius:50%;overflow:hidden;
  background:#0a1426 center/cover no-repeat;background-image:url('/img/face-final.png');
  box-shadow:0 4px 12px rgba(0,0,0,.45), 0 0 0 1.5px rgba(231,169,59,.55), 0 0 14px var(--glow)}
.bot-orb::after{content:"";position:absolute;inset:0;border-radius:50%;box-shadow:inset 0 2px 4px rgba(255,255,255,.18),inset 0 -3px 6px rgba(0,0,0,.35);pointer-events:none}
/* gentle "thinking" pulse on the avatar ring */
.app.thinking .msg.bot:last-child .bot-orb{animation:avatarPulse 1.1s var(--ease) infinite}
@keyframes avatarPulse{0%,100%{box-shadow:0 4px 12px rgba(0,0,0,.45),0 0 0 1.5px rgba(231,169,59,.55),0 0 14px var(--glow)}50%{box-shadow:0 4px 12px rgba(0,0,0,.45),0 0 0 2px rgba(231,169,59,.9),0 0 22px rgba(231,169,59,.6)}}
.bot-face{display:none}
.bot-body{flex:1;min-width:0;max-width:calc(100% - 48px)}
.bot-name{font-family:"Space Mono";font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2);margin-bottom:7px}
.bot-text{font-size:16px;line-height:1.62;color:#dfe3f1}
.bot-text b{color:var(--ink);font-weight:700}
.bot-text .hl{color:var(--gold-soft);font-weight:600}

/* typing indicator */
.typing{display:inline-flex;gap:5px;align-items:center;height:22px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:td 1.2s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes td{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}

/* follow-up chips inside a message */
.followups{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.followups .chip{font-size:13px;padding:9px 14px}

/* ---------- modules (rich cards) ---------- */
.mod{margin-top:18px;opacity:0;transform:translateY(18px) scale(.99);animation:bloom .6s var(--ease) forwards}
@keyframes bloom{to{opacity:1;transform:none}}
.glass{background:var(--glass);border:1px solid var(--line);border-radius:var(--r);backdrop-filter:blur(14px)}

/* level chooser */
.levels{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.level{padding:24px 22px;border-radius:var(--r);position:relative;overflow:hidden;text-align:left;transition:.25s var(--ease);background:var(--glass);border:1px solid var(--line)}
.level:hover{border-color:var(--gold);transform:translateY(-4px);background:var(--glass-2)}
.level .lk{font-family:"Space Mono";font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-soft)}
.level h3{font-size:23px;margin:10px 0 8px;font-weight:600}
.level p{color:var(--muted);font-size:13.5px;line-height:1.5}
.level .go{display:inline-flex;align-items:center;gap:7px;margin-top:16px;color:var(--gold-soft);font-weight:600;font-size:13.5px}
.level .big{position:absolute;right:-6px;top:-14px;font-family:"Space Grotesk";font-weight:700;font-size:80px;opacity:.06;pointer-events:none}
@media(max-width:560px){.levels{grid-template-columns:1fr}}

/* batch card */
.batch{padding:0;overflow:hidden}
.batch-top{padding:24px 24px 20px;border-bottom:1px solid var(--line)}
.batch-tags{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:14px}
.pill{font-family:"Space Mono";font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;padding:5px 10px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted)}
.pill.gold{background:var(--gold);color:#1a1206;border-color:var(--gold);font-weight:700}
.pill.live{color:var(--gold-soft);border-color:rgba(231,169,59,.4)}
.batch h3{font-size:25px;font-weight:600}
.batch-sub{color:var(--muted);font-size:14px;margin-top:8px;line-height:1.5}
.batch-feat{display:grid;grid-template-columns:1fr 1fr;gap:13px 18px;padding:20px 24px}
.feat{display:flex;gap:10px;align-items:flex-start}
.feat svg{width:17px;height:17px;color:var(--gold-soft);flex:none;margin-top:2px}
.feat .ft{font-size:13.5px;font-weight:600;line-height:1.2}
.feat .fs{font-size:12px;color:var(--muted);margin-top:2px}
.batch-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 24px;border-top:1px solid var(--line);background:rgba(0,0,0,.18);flex-wrap:wrap}
.price{display:flex;align-items:baseline;gap:9px}
.price .now{font-family:"Space Grotesk";font-weight:700;font-size:30px;letter-spacing:-.02em}
.price .was{color:var(--muted-2);text-decoration:line-through;font-size:14px}
.price .lab{font-family:"Space Mono";font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--gold-soft);display:block;margin-bottom:3px}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;font-size:14px;transition:.22s var(--ease);white-space:nowrap}
.btn-gold{background:linear-gradient(120deg,var(--gold-soft),var(--gold));color:#1a1206;box-shadow:0 8px 22px rgba(231,169,59,.28)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(231,169,59,.4)}
.btn-glass{background:var(--glass);border:1px solid var(--line-2);color:var(--ink)}
.btn-glass:hover{background:var(--glass-2);border-color:var(--gold)}
.btn .ar{transition:transform .22s var(--ease)}
.btn:hover .ar{transform:translate(3px,-3px)}

/* store rail */
.rail{display:flex;gap:14px;overflow-x:auto;padding:4px 2px 10px;scroll-snap-type:x mandatory}
.rail::-webkit-scrollbar{height:8px}
.pcard{flex:none;width:188px;scroll-snap-align:start;border-radius:16px;overflow:hidden;background:var(--glass);border:1px solid var(--line);transition:.25s var(--ease)}
.pcard:hover{border-color:var(--line-2);transform:translateY(-4px)}
.pcard .pi{aspect-ratio:4/5;background:var(--bg-2);position:relative;overflow:hidden}
.pcard .pi img{width:100%;height:100%;object-fit:cover}
.pcard .pi .phl{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted-2);font-family:"Space Mono";font-size:10px;text-align:center;padding:14px}
.pcard .pb{padding:13px 14px 15px}
.pcard .pn{font-size:13.5px;font-weight:600;line-height:1.25;font-family:"Space Grotesk"}
.pcard .pp{display:flex;align-items:baseline;gap:7px;margin-top:9px}
.pcard .pp .n{font-weight:700;font-size:16px;font-family:"Space Grotesk"}
.pcard .pp .w{font-size:12px;color:var(--muted-2);text-decoration:line-through}

/* results bloom */
.results{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.rcard{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--bg-2);position:relative;aspect-ratio:3/4}
.rcard img{width:100%;height:100%;object-fit:cover;object-position:top}
.rcard .phl{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted-2);font-family:"Space Mono";font-size:10px;text-align:center;padding:12px}
.rcard cap,.rcard .cap{position:absolute;left:0;right:0;bottom:0;padding:18px 11px 9px;background:linear-gradient(transparent,rgba(0,0,0,.8));font-size:11px;font-weight:600;color:#fff}
@media(max-width:560px){.results{grid-template-columns:repeat(2,1fr)}}

/* bio */
.bio{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:22px}
.bio-photo{aspect-ratio:4/5;border-radius:14px;overflow:hidden;background:var(--bg-2);border:1px solid var(--line)}
.bio-photo img{width:100%;height:100%;object-fit:cover;object-position:top}
.bio h3{font-size:22px;font-weight:600}
.bio .role{color:var(--gold-soft);font-size:13px;font-family:"Space Mono";letter-spacing:.04em;margin-top:5px}
.bio p{color:var(--muted);font-size:13.5px;line-height:1.55;margin-top:12px}
.bio-stats{display:flex;gap:22px;margin-top:16px;flex-wrap:wrap}
.bio-stats .s .n{font-family:"Space Grotesk";font-weight:700;font-size:22px}
.bio-stats .s .n em{color:var(--gold);font-style:normal}
.bio-stats .s .l{font-size:11px;color:var(--muted);margin-top:2px}
@media(max-width:560px){.bio{grid-template-columns:1fr}.bio-photo{max-width:150px}}

/* chart showcase */
.chart-show{display:grid;grid-template-columns:1.1fr 1fr;gap:0;overflow:hidden}
.chart-show .ct{padding:24px}
.chart-show .ci{background:var(--bg-2);position:relative;min-height:180px}
.chart-show .ci img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
@media(max-width:560px){.chart-show{grid-template-columns:1fr}}

/* note line */
.note{font-family:"Space Mono";font-size:11px;color:var(--muted-2);margin-top:14px;letter-spacing:.02em}

/* ---------- composer dock ---------- */
.dock{flex:none;padding:14px 22px 22px;background:linear-gradient(transparent,var(--bg) 38%)}
.dock-inner{max-width:var(--maxw);margin:0 auto}
.composer{position:relative;display:flex;align-items:center;gap:10px;background:var(--glass-2);border:1px solid var(--line-2);border-radius:999px;padding:8px 8px 8px 20px;transition:.25s var(--ease);backdrop-filter:blur(14px)}
.composer:focus-within{border-color:var(--gold);box-shadow:0 0 0 4px rgba(231,169,59,.12),0 10px 40px rgba(0,0,0,.4)}
.composer input{flex:1;background:none;border:none;outline:none;color:var(--ink);font-size:15.5px;font-family:inherit;min-width:0}
.composer input::placeholder{color:var(--muted-2)}
/* clickable rotating suggestion overlay */
.suggest-ghost{position:absolute;left:20px;right:62px;top:0;bottom:0;display:flex;align-items:center;gap:10px;pointer-events:none;z-index:2}
.suggest-ghost.hide{display:none}
.suggest-ghost .q{color:var(--muted-2);font-size:15.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:opacity .35s var(--ease)}
.suggest-ghost.swap .q{opacity:0}
.suggest-ghost .tap{pointer-events:auto;cursor:pointer;flex:none;background:rgba(231,169,59,.12);border:1px solid rgba(231,169,59,.45);color:var(--gold-soft);font-family:"Space Mono";font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;padding:5px 11px;border-radius:999px;transition:.2s var(--ease)}
.suggest-ghost .tap:hover{background:var(--gold);color:#1a1206;border-color:var(--gold)}
.send{width:44px;height:44px;border-radius:50%;flex:none;display:grid;place-items:center;background:linear-gradient(120deg,var(--gold-soft),var(--gold));color:#1a1206;transition:.2s var(--ease)}
.send:hover{transform:scale(1.06)}
.send:disabled{opacity:.4;cursor:default;transform:none}
.send svg{width:19px;height:19px}
.dock-hint{text-align:center;font-size:11px;color:var(--muted-2);margin-top:10px;font-family:"Space Mono";letter-spacing:.03em}
.dock-hint b{color:var(--muted)}

/* quick-question chips in the dock */
.dock-chips{display:flex;gap:8px;overflow-x:auto;padding:0 18px 12px 2px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.dock-chips::-webkit-scrollbar{display:none}
.qchip{flex:none;padding:9px 15px;border-radius:999px;background:var(--glass);border:1px solid var(--line);color:var(--ink);font-size:13px;font-weight:600;white-space:nowrap;transition:.2s var(--ease)}
.qchip:hover{background:var(--glass-2);border-color:var(--gold);color:var(--gold-soft);transform:translateY(-2px)}
.qchip:active{transform:translateY(0)}
@media(max-width:560px){.dock-chips{padding-bottom:10px}.qchip{font-size:12.5px;padding:8px 13px}}

/* ---------- hero responsive ---------- */
/* tablet / short laptop — keep split but trim the robot column slightly */
@media(max-width:900px){
  .hero-split{grid-template-columns:minmax(0,40%) minmax(0,1fr);gap:clamp(16px,2.4vw,34px)}
  .hero h1{font-size:clamp(30px,5vw,46px)}
}
/* narrow / mobile — STACK: robot as a smaller accent on top, copy below.
   The ASK box (dock) stays pinned at the bottom and always visible. */
@media(max-width:720px){
  .hero-split{
    grid-template-columns:1fr;
    grid-template-rows:auto auto;
    align-items:center;
    gap:clamp(6px,1.6vh,16px);
    justify-items:center;
  }
  .hero-art{
    width:100%;
    height:clamp(150px,30vh,260px);   /* accent height, not full screen */
    align-items:center;
  }
  .hero-copy{
    text-align:center;
    align-items:center;
    width:100%;
  }
  .hero .sub{margin-left:auto;margin-right:auto}
  .starter{justify-content:center}
  .hero h1{font-size:clamp(28px,8vw,40px)}
}

@media(max-width:560px){
  .bar{padding:14px 16px}
  .bar-link.hide-sm{display:none}
  .thread{padding:0 14px 20px}
  .dock{padding:12px 14px 18px}
  .hero-art{height:clamp(132px,24vh,210px)}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important}
  .thread{scroll-behavior:auto}
}