/* ===== 1. COLOURS (change here only) ===== */
:root{
  --bg:#F3F5FF;          /* soft chat background */
  --white:#FFFFFF;
  --ink:#14183A;
  --muted:#5A6086;
  --line:#E0E4F7;
  --indigo:#5B5BF0;      /* main bubble colour */
  --indigo-dark:#3E3EC9;
  --indigo-soft:#E8E8FE;
  --teal:#00C2A8;        /* online and success */
  --teal-soft:#D9F7F2;
  --coral:#FF7A59;       /* tips and highlights */
  --coral-soft:#FFEAE3;
  --red:#E5484D;
  --red-soft:#FDECEC;
  --shadow:0 8px 24px rgba(40,44,120,.10);
}
/* ===== 2. BASE ===== */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.75 "Inter",system-ui,-apple-system,"Segoe UI",sans-serif}
h1,h2,h3{font-family:"Nunito","Inter",sans-serif;line-height:1.2;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(2.2rem,5.2vw,3.7rem);font-weight:900;letter-spacing:-.01em}
h2{font-size:clamp(1.7rem,3.4vw,2.3rem);font-weight:900}
h2::after{content:"";display:block;width:62px;height:6px;margin-top:10px;border-radius:6px;background:linear-gradient(90deg,var(--indigo),var(--teal))}
h3{font-size:1.15rem;font-weight:800}
.sub{margin-top:48px;color:var(--indigo-dark)}
p{margin:0 0 1em;max-width:72ch}
a{color:var(--indigo-dark)}
mark{background:var(--coral-soft);color:#9A3414;padding:1px 7px;border-radius:6px;font-weight:600}
:focus-visible{outline:3px solid var(--coral);outline-offset:2px}
.hl{background:linear-gradient(90deg,var(--indigo),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.code-tag{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--indigo-dark);background:var(--indigo-soft);padding:4px 13px;border-radius:999px;margin-bottom:14px}
.note{font-size:.9rem;color:var(--muted);margin-top:10px}
/* ===== 3. NAV ===== */
nav.top{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;background:var(--white);padding:12px max(24px,calc((100% - 1040px)/2))}
.brand{font-family:"Nunito",sans-serif;font-weight:900;font-size:1.2rem;display:flex;align-items:center;gap:10px}
.brand b{color:var(--indigo)}
nav.top ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:2px}
nav.top a{display:block;color:var(--muted);text-decoration:none;font-size:.9rem;font-weight:600;padding:7px 12px;border-radius:999px}
nav.top a:hover{background:var(--indigo-soft);color:var(--indigo-dark)}
/* ===== 4. THE BOT AVATAR (pure CSS) ===== */
.avatar{position:relative;display:inline-block;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--indigo),var(--teal));flex:none}
.avatar::before{content:"";position:absolute;left:12px;top:16px;width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:13px 0 0 #fff;animation:eyes 4s infinite}
.avatar::after{content:"";position:absolute;left:14px;top:28px;width:16px;height:7px;border-bottom:3px solid #fff;border-radius:0 0 12px 12px}
.avatar.sm{width:28px;height:28px}
.avatar.sm::before{left:7px;top:10px;width:5px;height:5px;box-shadow:9px 0 0 #fff}
.avatar.sm::after{left:8px;top:17px;width:12px;height:5px;border-bottom-width:2px}
/* ===== 5. HERO (centered) + ANIMATED CHAT ===== */
.hero{padding:50px max(24px,calc((100% - 1040px)/2)) 84px;text-align:center;background:linear-gradient(180deg,var(--indigo-soft),var(--bg))}
.hero>p{margin-left:auto;margin-right:auto}
.lead{font-size:1.18rem;color:var(--muted)}
.chat{position:relative;width:min(400px,92%);margin:0 auto 34px;text-align:left;background:var(--white);border-radius:24px;box-shadow:0 20px 50px rgba(62,62,201,.22)}
.chat-top{display:flex;align-items:center;gap:12px;padding:14px 18px;background:linear-gradient(90deg,var(--indigo),var(--indigo-dark));color:#fff;border-radius:24px 24px 0 0}
.chat-top strong{display:block;font-family:"Nunito",sans-serif;font-size:1.05rem;line-height:1.2}
.chat-top small{display:flex;align-items:center;gap:6px;opacity:.9;font-size:.8rem}
.on{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(0,194,168,.3);animation:pulse 2s infinite}
.chat-body{display:grid;gap:10px;padding:18px 16px;min-height:300px;align-content:start}
.m{max-width:84%;padding:10px 15px;font-size:.92rem;line-height:1.5;opacity:0}
.m.user{justify-self:end;background:var(--indigo);color:#fff;border-radius:18px 18px 4px 18px}
.m.bot{justify-self:start;background:var(--indigo-soft);color:var(--ink);border-radius:18px 18px 18px 4px}
.slot{display:grid}
.slot>*{grid-area:1/1}
.typing{display:flex;gap:5px;align-items:center;width:62px;height:40px}
.typing span{width:8px;height:8px;border-radius:50%;background:var(--indigo);animation:dot 1s infinite}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s}
.m1{animation:s1 16s infinite}
.t1{animation:ty1 16s infinite}
.m2{animation:s2 16s infinite}
.m3{animation:s3 16s infinite}
.t2{animation:ty2 16s infinite}
.m4{animation:s4 16s infinite}
.chat-input{display:flex;justify-content:space-between;align-items:center;margin:0 14px 14px;padding:10px 10px 10px 16px;border:2px solid var(--line);border-radius:999px;color:var(--muted);font-size:.9rem}
.chat-input b{background:var(--indigo);color:#fff;border-radius:999px;padding:5px 14px;font-size:.82rem}
.float{position:absolute;background:var(--white);color:var(--ink);font-weight:700;font-size:.78rem;border-radius:999px;padding:5px 14px;box-shadow:var(--shadow);animation:floaty 4s ease-in-out infinite;white-space:nowrap}
.float::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--teal);margin-right:7px}
.f1{top:70px;left:-48px}
.f2{top:180px;right:-60px;animation-delay:-1.3s}
.f2::before{background:var(--coral)}
.f3{bottom:56px;left:-40px;animation-delay:-2.6s}
.f3::before{background:var(--indigo)}
.btn{display:inline-block;background:var(--indigo);color:#fff;font-weight:800;padding:13px 28px;border-radius:999px;text-decoration:none;box-shadow:0 8px 20px rgba(91,91,240,.35)}
.btn:hover{background:var(--indigo-dark)}
.btn.ghost{background:var(--white);color:var(--indigo-dark);margin-left:10px;box-shadow:none;border:2px solid var(--indigo)}
.btn.ghost:hover{background:var(--indigo-soft)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;margin:46px auto 0;max-width:940px;text-align:left}
.stat{background:var(--white);padding:16px 20px;color:var(--muted);font-size:.93rem;box-shadow:var(--shadow);border-radius:20px 20px 20px 6px}
.stat:nth-child(even){border-radius:20px 20px 6px 20px}
.stat b{display:block;font-family:"Nunito",sans-serif;font-size:1.2rem;color:var(--indigo-dark)}
/* ===== 6. SECTIONS ===== */
section{padding:76px max(24px,calc((100% - 1040px)/2))}
section:nth-of-type(even){background:var(--white)}
/* ===== 7. CARDS (bubble shaped) ===== */
.grid,.two{display:grid;gap:18px;margin-top:24px}
.grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.two{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.card{background:var(--white);padding:24px;box-shadow:var(--shadow);border-radius:22px 22px 22px 6px;border:1px solid var(--line);transition:transform .2s,border-color .2s}
.grid .card:nth-child(even),.two .card:nth-child(even){border-radius:22px 22px 6px 22px}
section:nth-of-type(even) .card{background:var(--bg)}
.card:hover{transform:translateY(-4px);border-color:var(--indigo)}
.card p{margin:0;font-size:.96rem;color:var(--muted)}
.card ul{margin:0;padding-left:20px;color:var(--muted)}
.card li{margin-bottom:.5em}
.card li::marker{color:var(--teal)}
.tag{display:inline-block;font-size:.7rem;font-weight:800;letter-spacing:.07em;color:var(--indigo-dark);background:var(--indigo-soft);padding:3px 11px;border-radius:999px;margin-bottom:12px}
.grid .card:nth-child(3n+2) .tag{color:#007A69;background:var(--teal-soft)}
.grid .card:nth-child(3n+3) .tag{color:#B2432A;background:var(--coral-soft)}
.key{display:grid;grid-template-columns:auto 1fr;gap:4px 16px;align-items:start;background:var(--coral-soft);border-radius:22px 22px 22px 6px;padding:18px 24px;margin:28px 0;border:1px solid #FFCDBE}
.key b{grid-row:1/3;display:grid;place-items:center;font-size:.72rem;letter-spacing:.1em;color:#fff;background:var(--coral);padding:6px 12px;border-radius:999px;white-space:nowrap}
.key p{margin:0;color:var(--ink);max-width:none}
.key.warn{background:var(--red-soft);border-color:#F3B4B6}
.key.warn b{background:var(--red)}
.essay{background:var(--white);padding:30px 34px;margin-top:20px;box-shadow:var(--shadow);border-radius:26px 26px 26px 6px;border:1px solid var(--line)}
.essay p{max-width:none;color:var(--muted);text-align:justify}
.essay p:last-child{margin-bottom:0}
/* ===== 8. TIMELINE (a conversation), PIPELINE, STEPS ===== */
ol.tl{list-style:none;margin:30px 0 0;padding:0;display:grid;gap:16px}
ol.tl li{max-width:78%;padding:18px 24px;box-shadow:var(--shadow);background:var(--white);border:1px solid var(--line);border-radius:22px 22px 22px 6px}
ol.tl li:nth-child(even){justify-self:end;background:var(--indigo);border-color:var(--indigo);border-radius:22px 22px 6px 22px}
ol.tl b{display:inline-block;font-size:.82rem;font-weight:800;color:var(--indigo-dark);background:var(--indigo-soft);padding:2px 12px;border-radius:999px}
ol.tl li:nth-child(even) b{color:var(--indigo-dark);background:#fff}
ol.tl h3{margin:8px 0 4px}
ol.tl p{margin:0;font-size:.96rem;color:var(--muted)}
ol.tl li:nth-child(even) h3{color:#fff}
ol.tl li:nth-child(even) p{color:#E4E4FF}
ol.pipe{list-style:none;counter-reset:p;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;padding:0;margin:26px 0}
ol.pipe li{counter-increment:p;background:var(--white);padding:18px;box-shadow:var(--shadow);border:1px solid var(--line);border-radius:20px 20px 20px 6px}
section:nth-of-type(even) ol.pipe li{background:var(--bg)}
ol.pipe li::before{content:counter(p);display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--indigo);color:#fff;font-weight:800;margin-bottom:10px}
ol.pipe li:nth-child(even)::before{background:var(--teal)}
ol.pipe b{display:block;font-family:"Nunito",sans-serif;font-size:1.05rem}
ol.pipe span{font-size:.93rem;color:var(--muted)}
ol.steps{list-style:none;counter-reset:s;padding:0;margin:26px 0 0;display:grid;gap:12px}
ol.steps li{counter-increment:s;display:grid;grid-template-columns:50px 1fr;gap:18px;background:var(--white);padding:18px 22px;box-shadow:var(--shadow);border:1px solid var(--line);border-radius:22px 22px 22px 6px}
section:nth-of-type(even) ol.steps li{background:var(--bg)}
ol.steps li::before{content:counter(s);width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--indigo),var(--teal));color:#fff;font-family:"Nunito",sans-serif;font-weight:900;font-size:1.1rem;display:grid;place-items:center}
ol.steps p{margin:0;color:var(--muted)}
ol.steps h3{margin-bottom:.3em}
/* ===== 9. TABLE, CODE, FAQ ===== */
.scroll{overflow-x:auto;margin-top:22px;border-radius:18px;background:var(--white);box-shadow:var(--shadow);border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:.95rem}
th,td{text-align:left;padding:13px 18px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--indigo);color:#fff;font-size:.85rem;font-weight:800}
td:first-child{color:var(--indigo-dark);font-weight:700}
td{color:var(--muted)}
tr:last-child td{border-bottom:0}
tbody tr:nth-child(even) td{background:var(--bg)}
tbody tr:hover td{background:var(--indigo-soft)}
pre.code{background:#171B45;border-radius:18px;border-top:6px solid var(--teal);padding:22px;overflow-x:auto;font-family:"JetBrains Mono",ui-monospace,monospace;font-size:.86rem;color:#DCE0FF;margin:22px 0}
details{background:var(--white);border-radius:18px 18px 18px 6px;padding:15px 22px;margin-bottom:12px;box-shadow:var(--shadow);border:1px solid var(--line)}
section:nth-of-type(even) details{background:var(--bg)}
details[open]{border-color:var(--indigo)}
summary{cursor:pointer;font-weight:800}
details p{margin:12px 0 0;color:var(--muted)}
/* ===== 10. FOOTER ===== */
footer{background:var(--ink);color:#B9BEE0;text-align:center;padding:32px 20px 46px;font-size:.9rem}
/* ===== 11. ANIMATION + RESPONSIVE ===== */
@keyframes s1{0%,2%{opacity:0;transform:translateY(10px)}6%,94%{opacity:1;transform:none}98%,100%{opacity:0}}
@keyframes ty1{0%,9%{opacity:0}12%,20%{opacity:1}22%,100%{opacity:0}}
@keyframes s2{0%,21%{opacity:0;transform:translateY(10px)}25%,94%{opacity:1;transform:none}98%,100%{opacity:0}}
@keyframes s3{0%,40%{opacity:0;transform:translateY(10px)}44%,94%{opacity:1;transform:none}98%,100%{opacity:0}}
@keyframes ty2{0%,49%{opacity:0}52%,60%{opacity:1}62%,100%{opacity:0}}
@keyframes s4{0%,61%{opacity:0;transform:translateY(10px)}65%,94%{opacity:1;transform:none}98%,100%{opacity:0}}
@keyframes dot{50%{transform:translateY(-5px);opacity:.45}}
@keyframes eyes{0%,92%,100%{transform:scaleY(1)}95%{transform:scaleY(.1)}}
@keyframes pulse{50%{opacity:.4}}
@keyframes floaty{50%{transform:translateY(-8px)}}
@media(max-width:700px){
  ol.tl li{max-width:100%}
  .key{grid-template-columns:1fr}.key b{grid-row:auto;justify-self:start}
}
@media(max-width:600px){
  .btn.ghost{margin:12px 0 0}
  .essay{padding:22px}.essay p{text-align:left}
  ol.steps li{grid-template-columns:1fr}
  .f1{left:-6px}.f2{right:-6px}.f3{left:-6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .m{opacity:1}.typing{display:none}
}