/* ============================================================
   VLADO ZLATOŠ AI — Klon design system (ported from Klon-design/assets/styles.css)
   Oswald (display) · IBM Plex Sans (body) · IBM Plex Mono (labels)
   White-first, black header, single ember accent. Light + dark.
   Engine-preserved classes (activity rail, markdown answer, skill-cite,
   toast, modal, drawer) are themed via the token aliases at the end of :root.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@300;400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --bg:#ffffff;
  --bg-2:#f4f4f0;
  --bg-3:#ebebe6;
  --ink:#0c0c0c;
  --ink-2:#57574f;
  --ink-3:#8a8a80;
  --line:#e3e3dc;
  --line-strong:#111110;
  --accent:#e8451e;
  --accent-2:#c93a16;
  --accent-ink:#ffffff;
  --header-bg:#0a0a0a;
  --header-ink:#ffffff;
  --header-ink-2:#9a9a92;
  --on-dark-line:#2a2a26;
  --error:#C0392B;
  --shadow:0 1px 2px rgba(12,12,10,.05), 0 12px 32px -16px rgba(12,12,10,.18);
  --shadow-sm:0 1px 2px rgba(12,12,10,.06);
  --shadow-lg:0 24px 60px -20px rgba(12,12,10,.30);
  --radius:14px;
  --maxw:1120px;
  --chatw:740px;
  --font:'IBM Plex Sans', system-ui, sans-serif;
  --display:'Oswald', system-ui, sans-serif;
  --mono:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* --- compatibility aliases for the preserved engine CSS (resolve to the themed tokens above) --- */
  --navy:var(--ink);
  --navy-700:var(--line-strong);
  --cyan:var(--accent);
  --cyan-deep:var(--accent);
  --cyan-wash:color-mix(in srgb, var(--accent) 14%, var(--bg));
  --ink-soft:var(--ink-2);
  --muted:var(--ink-3);
  --line-soft:var(--bg-3);
  --panel:var(--bg-2);
  --panel-2:var(--bg-3);
  --r:var(--radius);
  --shadow-md:var(--shadow);
  --c:var(--accent);
}

[data-theme="dark"]{
  --bg:#0c0c0b;
  --bg-2:#161614;
  --bg-3:#1f1f1c;
  --ink:#f3f3ee;
  --ink-2:#a6a69d;
  --ink-3:#6f6f67;
  --line:#262623;
  --line-strong:#3a3a35;
  --accent:#f4581f;
  --accent-2:#ff6a32;
  --accent-ink:#0c0c0b;
  --header-bg:#000000;
  --header-ink:#ffffff;
  --header-ink-2:#8c8c84;
  --on-dark-line:#2a2a26;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 16px 40px -18px rgba(0,0,0,.6);
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow-lg:0 24px 60px -20px rgba(0,0,0,.7);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
[hidden]{display:none !important}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background .35s ease, color .35s ease;
}
#root{min-height:100vh;display:flex;flex-direction:column}
::selection{background:var(--accent);color:var(--accent-ink)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--mono)}
.display{font-family:var(--display)}

/* ============================ HEADER ============================ */
.hdr{position:sticky;top:0;z-index:50;background:var(--header-bg);color:var(--header-ink);border-bottom:1px solid #000}
.hdr-in{max-width:var(--maxw);margin:0 auto;height:66px;padding:0 24px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:12px;cursor:pointer}
.brand-mark{width:38px;height:38px;border-radius:9px;background:#000;display:grid;place-items:center;overflow:hidden;box-shadow:inset 0 0 0 1px #232320;flex:none}
.brand-mark img{width:100%;height:100%;object-fit:cover;display:block}
.brand-txt{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--display);font-weight:600;font-size:18px;letter-spacing:.04em;text-transform:uppercase;white-space:nowrap;color:var(--header-ink)}
.brand-sub{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--header-ink-2);margin-top:4px;text-transform:uppercase}
.hdr-spacer{flex:1}
.hdr-actions{display:flex;align-items:center;gap:8px}
.tag-beta{font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--header-ink-2);border:1px solid var(--on-dark-line);padding:5px 8px;border-radius:6px}
.hdr .icon-btn{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;color:var(--header-ink);border:1px solid var(--on-dark-line);transition:background .15s ease,border-color .15s ease}
.hdr .icon-btn:hover{background:#1c1c19;border-color:#3a3a34}
.hdr .icon-btn svg{width:18px;height:18px}
.hdr-link{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--header-ink);padding:9px 14px;border-radius:9px;border:1px solid var(--on-dark-line);transition:background .15s ease}
.hdr-link:hover{background:#1c1c19}
.hdr-back{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--header-ink-2);padding:8px 12px;border-radius:9px;transition:color .15s ease,background .15s}
.hdr-back:hover{color:var(--header-ink);background:#1c1c19}
.hdr-back svg{width:15px;height:15px}

/* ============================ LANDING ============================ */
.page{flex:1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.hero{padding:72px 24px 40px;text-align:center}
.hero-inner{max-width:880px;margin:0 auto}
.stars{color:var(--ink-3);letter-spacing:.5em;font-size:13px;margin-bottom:22px}
.stars b{color:var(--accent)}
.hero h1{font-family:var(--display);font-weight:600;text-transform:uppercase;letter-spacing:-.005em;font-size:clamp(38px,6.2vw,76px);line-height:.98;margin:0 0 20px;text-wrap:balance}
.hero h1 .em{color:var(--accent)}
.hero-lead{font-size:clamp(16px,1.5vw,19px);color:var(--ink-2);max-width:580px;margin:0 auto 34px;line-height:1.55;text-wrap:pretty}

/* composer (hero + chat) */
.composer-wrap{width:100%}
.composer{display:flex;align-items:flex-end;gap:10px;background:var(--bg);border:1.5px solid var(--line-strong);border-radius:16px;padding:12px 12px 12px 18px;box-shadow:var(--shadow);transition:border-color .2s ease,box-shadow .2s ease}
.composer:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 14%,transparent),var(--shadow)}
.composer.big{max-width:720px;margin:0 auto}
.composer textarea{flex:1;border:none;outline:none;resize:none;background:transparent;color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.45;padding:7px 0;max-height:180px}
.composer textarea::placeholder{color:var(--ink-3)}
.send-btn{width:46px;height:46px;flex:none;border-radius:12px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;transition:transform .12s ease,background .15s ease}
.send-btn:hover{background:var(--accent-2)}
.send-btn:active{transform:scale(.94)}
.send-btn:disabled{background:var(--bg-3);color:var(--ink-3);cursor:not-allowed}
.send-btn svg{width:20px;height:20px}
.disclaimer{margin:14px auto 0;max-width:560px;font-family:var(--mono);font-size:11px;line-height:1.6;letter-spacing:.02em;color:var(--ink-3);text-align:center}
.disclaimer .accent{color:var(--accent)}
/* members-only lock (auth on + missing/invalid token): subtle, not alarming */
.lock-note{margin:13px auto 0;max-width:560px;font-family:var(--mono);font-size:11.5px;line-height:1.6;letter-spacing:.02em;color:var(--accent);text-align:center}
body.is-locked .composer{opacity:.7}
body.is-locked .composer textarea{cursor:not-allowed}
body.is-locked .gates .gate{opacity:.45;pointer-events:none}
body.is-locked .section-head .ask{opacity:.55}

/* sections + gate pills */
.section{padding:30px 0}
.section-head{display:flex;align-items:baseline;gap:14px;margin-bottom:22px;border-top:1px solid var(--line);padding-top:26px}
.section-head h2{font-family:var(--display);font-weight:600;text-transform:uppercase;font-size:clamp(20px,2.4vw,27px);letter-spacing:.01em;margin:0;line-height:1}
.section-head .count{font-family:var(--mono);font-size:12px;color:var(--ink-3);letter-spacing:.1em}
.section-head .ask{margin-left:auto;color:var(--ink-2);font-size:14px;max-width:360px;text-align:right}
.gates{display:flex;flex-wrap:wrap;gap:10px}
.gate{display:inline-flex;align-items:center;gap:9px;border:1.5px solid var(--line-strong);border-radius:999px;padding:10px 17px;font-size:14.5px;font-weight:500;color:var(--ink);background:var(--bg);text-align:left;transition:background .16s ease,color .16s ease,transform .12s ease,border-color .16s}
.gate:hover{background:var(--ink);color:var(--bg);transform:translateY(-1px)}
.gate:hover .gate-arrow{transform:translateX(2px);opacity:1}
.gate .gate-arrow{opacity:0;transition:transform .16s ease,opacity .16s;margin-left:-2px;display:inline-flex}
.gate .gate-arrow svg{width:14px;height:14px;display:block}
.gate.is-project .gate-dot{width:7px;height:7px;border-radius:999px;background:var(--accent);flex:none}
.gate.alt:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.gate.is-free{border-style:dashed;color:var(--ink-2)}
.gate.is-free:hover{background:var(--bg-2);color:var(--ink);border-color:var(--line-strong)}

/* ============================ CHAT ============================ */
.chat{position:fixed;top:66px;left:0;right:0;bottom:0;display:flex;flex-direction:column;min-height:0;background:var(--bg)}
.chat-scroll{flex:1;overflow-y:auto}
.chat-thread{max-width:var(--chatw);margin:0 auto;padding:34px 24px 40px}
.chat-ctx{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-bottom:22px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.chat-ctx .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase}
.chat-ctx .pill{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:5px 12px;color:var(--ink-2)}
.chat-ctx .pill b{color:var(--ink);font-weight:600}

.msg{display:flex;gap:14px;margin:26px 0}
.msg-av{width:34px;height:34px;flex:none;border-radius:9px;overflow:hidden;background:#000;display:grid;place-items:center;box-shadow:inset 0 0 0 1px #232320}
.msg-av img{width:100%;height:100%;object-fit:cover}
.msg-body{flex:1;min-width:0;padding-top:3px;display:flex;flex-direction:column;gap:13px}
.msg-who{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.msg.user{flex-direction:row-reverse}
.msg.user .msg-body{align-items:flex-end}
.msg.user .bubble{background:var(--ink);color:var(--bg);border-radius:16px 16px 4px 16px;padding:13px 17px;font-size:16px;line-height:1.5;max-width:82%;white-space:pre-wrap;word-wrap:break-word}
.msg.user .msg-av{background:var(--bg-3);box-shadow:inset 0 0 0 1px var(--line)}
.msg.user .msg-av svg{width:17px;height:17px;color:var(--ink-2)}

.typing{display:inline-flex;gap:5px;padding:6px 0}
.typing span{width:7px;height:7px;border-radius:999px;background:var(--ink-3);animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}
.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}

.chat-dock{border-top:1px solid var(--line);background:var(--bg);padding:14px 24px 18px}
.chat-dock-in{max-width:var(--chatw);margin:0 auto}
.chat-meta{display:flex;align-items:center;justify-content:flex-start;margin-top:10px;gap:12px}
.chat-meta .limit{font-family:var(--mono);font-size:11px;color:var(--ink-3);letter-spacing:.04em}
.chat-meta .limit b{color:var(--ink-2)}

/* ============================ FOOTER ============================ */
.foot{border-top:1px solid var(--line);margin-top:30px;padding:30px 24px}
.foot-in{max-width:var(--maxw);margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:16px;justify-content:space-between}
.foot-in p{font-family:var(--mono);font-size:11px;color:var(--ink-3);margin:0;letter-spacing:.03em;line-height:1.6}

/* ============================ HISTORY DRAWER ============================ */
.drawer-overlay{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.4);opacity:0;transition:opacity .25s ease}
.drawer-overlay.open{opacity:1}
.drawer{position:fixed;top:0;right:0;bottom:0;z-index:61;width:340px;max-width:88vw;background:var(--bg);border-left:1px solid var(--line);display:flex;flex-direction:column;transform:translateX(100%);transition:transform .25s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-lg)}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid var(--line)}
.drawer-title{font-family:var(--display);font-weight:600;text-transform:uppercase;letter-spacing:.04em;font-size:18px}
.drawer .icon-btn{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;color:var(--ink-2);border:1px solid var(--line);transition:.15s}
.drawer .icon-btn:hover{background:var(--bg-2);border-color:var(--line-strong);color:var(--ink)}
.drawer .icon-btn svg{width:17px;height:17px}
.drawer-new{display:flex;align-items:center;justify-content:center;gap:9px;margin:14px 16px 0;padding:11px 14px;border-radius:11px;background:var(--accent);color:var(--accent-ink);font-weight:600;font-size:14px}
.drawer-new:hover{background:var(--accent-2)}
.drawer-new svg{width:17px;height:17px}
.drawer-search{display:flex;align-items:center;gap:8px;margin:12px 16px;padding:0 12px;height:38px;border-radius:10px;background:var(--bg-2);border:1px solid var(--line)}
.drawer-search input{border:none;outline:none;background:none;width:100%;font-size:14px;color:var(--ink)}
.drawer-foot{padding:12px 16px;border-top:1px solid var(--line)}

.history{flex:1;overflow-y:auto;padding:4px 10px 10px}
.history-group{margin-top:12px}
.history-label{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding:6px 8px}
.history-row{display:flex;align-items:center;gap:2px}
.history-item{display:flex;align-items:center;gap:9px;flex:1 1 auto;min-width:0;text-align:left;padding:9px 10px;border-radius:10px;color:var(--ink-2);font-size:14px;transition:.12s;line-height:1.3}
.history-item:hover,.history-row:hover .history-item{background:var(--bg-2);color:var(--ink)}
.history-item.is-active{background:var(--bg-2);color:var(--ink);font-weight:600}
.history-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cat-dot{display:inline-block;width:7px;height:7px;border-radius:50%;flex:0 0 auto;background:var(--accent)}
.history-empty{padding:14px 10px;font-size:13px;color:var(--ink-3)}
.history-del{flex:0 0 auto;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;color:var(--ink-3);opacity:0;transition:opacity .12s,background .12s,color .12s}
.history-row:hover .history-del,.history-del:focus-visible{opacity:1}
.history-del:hover{background:color-mix(in srgb,var(--error) 14%,var(--bg));color:var(--error)}

.user-chip{display:flex;align-items:center;gap:10px;padding:4px}
.avatar{width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--bg);display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:700;flex:0 0 auto}
.user-meta{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.user-meta b{font-size:13.5px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-meta small{font-size:11.5px;color:var(--ink-3)}

/* ============================ ENGINE: live activity rail ============================ */
.activity{border:1px solid var(--line);border-radius:12px;background:var(--bg-2);overflow:hidden;max-width:560px}
.activity.is-done{background:var(--bg)}
.activity-head{display:flex;align-items:center;gap:10px;width:100%;padding:10px 13px;font-size:13.5px;font-weight:600;color:var(--ink-2)}
.act-spinner{width:18px;height:18px;display:flex;align-items:center;justify-content:center;color:var(--accent);flex:0 0 auto}
.act-spinner .ring{width:14px;height:14px;border-radius:50%;border:2px solid var(--bg-3);border-top-color:var(--accent);animation:spin .8s linear infinite}
.activity.is-done .act-spinner{background:color-mix(in srgb,var(--accent) 14%,var(--bg));border-radius:50%}
.act-label{flex:1;text-align:left}
.act-chevron{transition:transform .15s;color:var(--ink-3);flex:0 0 auto}
.activity.is-open .act-chevron{transform:rotate(90deg)}
.activity-steps{list-style:none;margin:0;padding:2px 13px 12px 15px;display:flex;flex-direction:column;gap:9px}
.activity:not(.is-open) .activity-steps{display:none}
.activity-step{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);animation:fadeUp .3s ease both}
.activity-step.is-err{color:var(--error)}
.step-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto;box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 16%,var(--bg))}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes fadeUp{from{transform:translateY(5px)}to{transform:none}}

/* ============================ ENGINE: rendered markdown answer ============================ */
.answer{display:flex;flex-direction:column}
.answer p{margin:0 0 13px;font-size:16px;line-height:1.62;color:var(--ink)}
.answer p:last-child{margin-bottom:0}
.answer strong{color:var(--ink);font-weight:600}
.answer em{font-style:italic}
.answer h1,.answer h2,.answer h3,.answer h4{font-family:var(--display);margin:14px 0 8px;font-size:15px;font-weight:600;letter-spacing:.01em;text-transform:uppercase;color:var(--ink)}
.answer ul,.answer ol{margin:0 0 13px;padding-left:2px;list-style:none;display:flex;flex-direction:column;gap:9px}
.answer li{position:relative;padding-left:22px;font-size:16px;line-height:1.55;color:var(--ink)}
.answer ul>li::before{content:"";position:absolute;left:4px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--accent);transform:rotate(45deg)}
.answer ol{counter-reset:ans}
.answer ol>li{counter-increment:ans}
.answer ol>li::before{content:counter(ans);position:absolute;left:0;top:1px;font-size:12px;font-weight:700;color:var(--accent)}
.answer code{font-family:var(--mono);font-size:.88em;background:var(--bg-3);padding:.1em .35em;border-radius:5px;color:var(--ink)}
.answer pre{background:var(--bg-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;overflow-x:auto;margin:0 0 13px}
.answer pre code{background:none;padding:0}
.answer blockquote{border-left:3px solid var(--accent);background:var(--bg-2);padding:8px 14px;margin:0 0 13px;border-radius:0 8px 8px 0;color:var(--ink-2)}
.answer hr{border:none;border-top:1px solid var(--line);margin:14px 0}
.md-table-wrap{overflow-x:auto;margin:0 0 13px;border:1px solid var(--line);border-radius:10px}
.md-table{width:100%;border-collapse:collapse;font-size:13.5px}
.md-table th{text-align:left;padding:8px 11px;font-weight:700;color:var(--ink);background:var(--bg-2);border-bottom:1px solid var(--line)}
.md-table td{padding:8px 11px;border-bottom:1px solid var(--bg-3);color:var(--ink-2);vertical-align:top}
.md-table tr:last-child td{border-bottom:none}

/* skill-attribution chip (over the [[skill:name|label]] grammar) — non-link, muted, dashed */
.skill-cite{display:inline-flex;align-items:center;gap:4px;vertical-align:baseline;font-size:12.5px;font-weight:600;white-space:nowrap;color:var(--ink-3);background:var(--bg-3);border:1px dashed var(--line);padding:1px 7px;border-radius:7px;margin:0 1px;line-height:1.4;cursor:help}

.msg-actions{display:flex;gap:3px;margin-top:4px}
.icon-btn.ghost{width:30px;height:30px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;color:var(--ink-3);transition:.15s}
.icon-btn.ghost:hover{background:var(--bg-2);color:var(--ink)}
.error-msg{color:var(--error);background:color-mix(in srgb,var(--error) 8%,var(--bg));border:1px solid color-mix(in srgb,var(--error) 25%,var(--bg));padding:11px 14px;border-radius:11px;font-size:14px}

/* ============================ ENGINE: toast + confirm modal ============================ */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:80;display:flex;align-items:center;gap:9px;background:var(--ink);color:var(--bg);font-size:13.5px;font-weight:600;padding:11px 16px;border-radius:11px;box-shadow:var(--shadow-lg);animation:fadeUp .2s ease both}
.toast>svg{color:var(--accent)}
.modal-overlay{position:fixed;inset:0;z-index:90;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(0,0,0,.4);backdrop-filter:blur(2px);animation:modal-in .12s ease both}
.modal{width:100%;max-width:400px;background:var(--bg);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:22px 22px 18px;animation:fadeUp .16s ease both}
.modal-title{font-family:var(--display);font-size:18px;font-weight:600;text-transform:uppercase;letter-spacing:.02em;color:var(--ink);margin:0 0 8px}
.modal-body{font-size:14px;color:var(--ink-2);line-height:1.5;margin:0 0 20px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px}
.modal .btn{font-size:14px;font-weight:600;padding:9px 16px;border-radius:10px;transition:.13s}
.modal .btn-ghost{color:var(--ink-2);background:var(--bg-2)}
.modal .btn-ghost:hover{background:var(--bg-3)}
.modal .btn-danger{color:#fff;background:var(--error)}
.modal .btn-danger:hover{background:color-mix(in srgb,var(--error) 85%,#000)}
@keyframes modal-in{from{opacity:0}to{opacity:1}}

/* scrollbars */
.history::-webkit-scrollbar,.chat-scroll::-webkit-scrollbar{width:10px}
.history::-webkit-scrollbar-thumb,.chat-scroll::-webkit-scrollbar-thumb{background:var(--bg-3);border-radius:99px;border:3px solid transparent;background-clip:content-box}
.history::-webkit-scrollbar-thumb:hover,.chat-scroll::-webkit-scrollbar-thumb:hover{background:var(--line-strong);background-clip:content-box}

/* fade-in — base state is VISIBLE; only animate IN */
.fade{animation:fade .4s ease}
@media (prefers-reduced-motion: no-preference){@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}}

/* responsive */
@media (max-width:720px){
  .hdr-in{padding:0 16px;height:60px}
  .brand-sub{display:none}
  .hero{padding:48px 18px 28px}
  .section-head{flex-wrap:wrap}
  .section-head .ask{margin-left:0;text-align:left;width:100%}
  .tag-beta{display:none}
  .chat{top:60px}
  .foot-in{flex-direction:column;align-items:flex-start}
}