:root{
    --violet:#0057ff;
    --violet-600:#0047d9;
    --violet-700:#0040cc;
    --violet-50:#e6efff;
    --violet-100:#d9e8ff;
    --violet-200:#b3d1ff;
    --lav-bg:#f0f5ff;
    --ink:#0B0B12;
    --ink-2:#16161F;
    --gray-900:#1B1B25;
    --gray-700:#3A3A48;
    --gray-500:#6B6B7B;
    --gray-400:#9396A6;
    --gray-300:#D7D8E0;
    --gray-200:#E8E8EE;
    --gray-100:#F2F2F6;
    --bg:#FBFAFE;
    --card:#ffffff;
    --shadow-sm: 0 1px 2px rgba(20,16,60,.06);
    --shadow-md: 0 8px 24px rgba(48,32,140,.07), 0 2px 4px rgba(20,16,60,.04);
    --shadow-lg: 0 24px 60px rgba(48,32,140,.10), 0 4px 12px rgba(20,16,60,.06);
    --radius: 14px;
  }
  *{ box-sizing:border-box; }
  html,body{ margin:0; padding:0; }
  body{
    font-family: 'Bricolage Grotesque', sans-serif;
    color:var(--gray-900);
    background:var(--bg);
    font-size:15px;
    line-height:1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; cursor:pointer; border:none; background:none; }

  .container{ max-width: 1440px; margin: 0 auto; padding: 0 130px; }

  /* ============ BUTTONS ============ */
  .btn{
    display:inline-flex; align-items:center; gap:8px;
    font-weight:600; font-size:14.5px;
    padding: 11px 18px; border-radius: 10px;
    transition: transform .15s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
  }
  .btn:hover{ transform: translateY(-1px); }
  .btn-primary{ background:var(--violet); color:#fff; box-shadow: 0 6px 14px rgba(91,63,244,.28); }
  .btn-primary:hover{ background:var(--violet-600); }
  .btn-outline{ background:#fff; color:var(--violet); border:1.5px solid var(--violet); }
  .btn-outline:hover{ background:var(--violet-50); }
  .btn .arr{ width:14px; height:14px; }

  /* ============ HERO ============ */
  .hero{
    padding: 80px 0 60px;
    background-color: #f1f2f3;
    background-image: url('https://cdn.prod.website-files.com/65c292289fb0ea1ff3a84bd3/69e74f4f8065c619d9f6af08_hero-bg.avif');
    background-position: 50% -2%;
    background-repeat: no-repeat;
    background-size: contain;
    position: relative;
    overflow-x:clip;
  }
  .hero-orb {
    position: absolute; border-radius: 50%;
    filter: blur(72px); pointer-events: none; z-index: 0;
  }
  .hero-orb-1 {
    width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(0,112,255,.13), transparent 70%);
    top: -80px; left: -100px;
    animation: orbFloat1 9s ease-in-out infinite;
  }
  .hero-orb-2 {
    width: 360px; height: 360px;
    background: radial-gradient(circle, rgba(99,179,255,.10), transparent 70%);
    top: 10%; right: -80px;
    animation: orbFloat2 11s ease-in-out infinite;
  }
  .hero-orb-3 {
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(0,112,255,.08), transparent 70%);
    bottom: 0; left: 40%;
    animation: orbFloat3 13s ease-in-out infinite;
  }
  @keyframes orbFloat1 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(40px,30px) scale(1.08)} }
  @keyframes orbFloat2 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-30px,40px) scale(1.06)} }
  @keyframes orbFloat3 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(20px,-30px) scale(1.05)} }
  .hero > *:not(.hero-orb) { position: relative; z-index: 1; }
  .hero-grid{
    display:grid; grid-template-columns: 1.05fr 1.1fr; gap:60px; align-items:start;
  }
  .eyebrow{
    display:inline-block;
    font-size:11.5px; font-weight:700; letter-spacing:.12em; text-transform:uppercase;
    color:var(--violet);
    background:var(--violet-50);
    padding:6px 12px; border-radius:999px;
  }
  h1.hero-title{
    font-size: 58px;
    line-height: 1.05;
    letter-spacing:-0.03em;
    font-weight: 800;
    margin: 20px 0 20px;
    color: var(--ink);
  }
  h1.hero-title .accent{ color: var(--violet); display:block; }
  .hero-sub{
    font-size: 16.5px; color: var(--gray-500); max-width: 440px;
    margin: 0 0 30px;
  }
  .hero-ctas{ display:flex; gap:14px; margin-bottom: 32px; }
  .trust-row{ display:flex; align-items:center; gap:14px; }
  .avatars{ display:flex; }
  .avatars img{
    width:34px; height:34px; border-radius:50%; border:2px solid #fff; object-fit:cover;
    margin-left:-8px;
  }
  .avatars img:first-child{ margin-left:0; }
  .trust-text{ font-size:13px; color:var(--gray-500); line-height:1.45; }

  /* ============ CHAT ANIMATIONS ============ */
  @keyframes chatFadeIn {
    from { opacity:0; transform: translateY(8px); }
    to   { opacity:1; transform: translateY(0); }
  }
  @keyframes bubbleIn {
    0%   { opacity:0; transform: translateY(8px) translateX(20px) scale(.92); }
    100% { opacity:1; transform: translateY(0)   translateX(0)    scale(1); }
  }
  @keyframes sparklePulse {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50%      { transform: scale(1.18) rotate(15deg); }
  }
  @keyframes dotBlink {
    0%, 100% { box-shadow: 0 0 0 3px rgba(34,197,94,.18); }
    50%      { box-shadow: 0 0 0 6px rgba(34,197,94,.05); }
  }
  @keyframes dotsType {
    0%   { opacity:0; transform: scale(.5); }
    30%  { opacity:1; transform: scale(1); }
    100% { opacity:0; transform: scale(.5); }
  }

  .chat-stack.animate .gpt-chip{ animation: chatFadeIn .55s ease-out .1s both, chipFloat 4s ease-in-out 2s infinite; }
  .chat-stack .gpt-chip .dot{ animation: dotBlink 1.6s ease-in-out infinite; }
  .chat-stack.animate .chat-user .bubble-user{ animation: bubbleIn .55s cubic-bezier(.34,1.4,.64,1) .35s both, bubbleGlow 3s ease-in-out 1.5s infinite; }
  .chat-stack.animate .chat-user .avatar-user{ animation: chatFadeIn .55s ease-out .45s both; }
  .chat-stack .chat-user .avatar-user svg{ animation: sparklePulse 2.4s ease-in-out 1.2s infinite; transform-origin: center; }
  .chat-stack.animate .chat-card{ animation: chatFadeIn .55s ease-out .85s both; }
  .chat-stack.animate .chat-card .chat-header{ animation: chatFadeIn .5s ease-out 1.15s both; opacity:0; }
  .chat-stack.animate .chat-card .rec-item:nth-child(1){ animation: chatFadeIn .5s ease-out 1.45s both; opacity:0; }
  .chat-stack.animate .chat-card .rec-item:nth-child(2){ animation: chatFadeIn .5s ease-out 1.75s both; opacity:0; }
  .chat-stack.animate .chat-card .rec-item:nth-child(3){ animation: chatFadeIn .5s ease-out 2.05s both; opacity:0; }
  .chat-stack.animate .chat-card .chat-divider{ animation: chatFadeIn .5s ease-out 2.35s both; opacity:0; }
  .chat-stack.animate .chat-card .rec-badge{ animation: chatFadeIn .5s ease-out 2.5s both; opacity:0; }
  .chat-stack.animate .chat-card .rec-badge .check{ animation: checkPop .6s cubic-bezier(.34,1.6,.64,1) 2.55s both; }

  /* Bouncy chip ChatGPT */
  @keyframes chipFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-3px); }
  }

  /* User bubble subtle glow pulse after entry */
  @keyframes bubbleGlow {
    0%, 100% { box-shadow: 0 8px 20px rgba(91,63,244,.28); }
    50%      { box-shadow: 0 12px 30px rgba(91,63,244,.45); }
  }

  /* Check badge pop */
  @keyframes checkPop {
    0%   { transform: scale(0) rotate(-90deg); }
    60%  { transform: scale(1.2) rotate(0); }
    100% { transform: scale(1) rotate(0); }
  }

  /* ============ END CHAT ANIMATIONS ============ */

  /* Start invisible to avoid flash before JS adds .animate */
  .chat-stack:not(.animate) .gpt-chip,
  .chat-stack:not(.animate) .chat-user,
  .chat-stack:not(.animate) .chat-card { opacity: 0; }

  .chat-stack{
    position:relative;
    display:flex; flex-direction:column; align-items:flex-end;
  }
  .gpt-chip{
    display:inline-flex; align-items:center; gap:8px;
    background:#fff;
    border:1px solid #ECE7F6;
    padding: 7px 14px 7px 10px;
    border-radius: 999px;
    box-shadow: 0 6px 16px rgba(48,32,140,.08);
    font-size:12.5px; font-weight:600; color:var(--ink);
    letter-spacing:-0.005em;
    margin-bottom: 14px;
    align-self:flex-end;
  }
  .chat-stack .chat-card{ width:100%; }
  .chat-stack .chat-user{ width:100%; }
  .gpt-chip .dot{
    width:7px; height:7px; border-radius:50%;
    background:#22C55E; box-shadow: 0 0 0 3px rgba(34,197,94,.15);
    margin-left:2px;
  }
  .chat-user{
    display:flex; align-items:center; gap:12px; justify-content:flex-end;
    margin-bottom: 14px;
  }
  .bubble-user{
    background: linear-gradient(135deg, #6B4FF7 0%, #5132E8 100%);
    color:#fff;
    padding:13px 18px;
    border-radius: 18px 18px 4px 18px;
    font-size:14px; font-weight:500;
    max-width: 290px;
    line-height: 1.4;
    box-shadow: 0 8px 20px rgba(91,63,244,.28);
  }
  .avatar-user{
    width:40px; height:40px; border-radius:50%; background:#fff;
    display:flex; align-items:center; justify-content:center;
    box-shadow: 0 6px 14px rgba(20,16,60,.10), 0 0 0 1px rgba(91,63,244,.06);
    flex-shrink:0;
  }
  .chat-card{
    background:#fff; border-radius: 20px;
    padding: 24px 26px;
    box-shadow: 0 30px 60px -20px rgba(48,32,140,.18), 0 8px 20px -8px rgba(48,32,140,.10);
    border: 1px solid #EFECF8;
  }
  .chat-header{
    display:flex; align-items:center; gap:12px; margin-bottom:22px;
  }
  .gpt-icon{
    width:30px; height:30px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
  }
  .chat-intro{ font-size:14.5px; color:var(--gray-900); font-weight:500;}
  .rec-list{ display:flex; flex-direction:column; gap: 18px; }
  .rec-item{ display:grid; grid-template-columns: 22px 40px 1fr; gap:14px; align-items:flex-start; }
  .rec-num{ font-size:15px; font-weight:500; color:var(--gray-400); padding-top:9px;}
  .rec-logo{
    width:40px; height:40px; border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    font-weight:800; font-size:15px; color:#fff;
    flex-shrink:0;
  }
  .rec-logo.pf{ background:#13C1A2; box-shadow: 0 4px 10px rgba(19,193,162,.25);}
  .rec-logo.bh{ background:#EAF4DC; }
  .rec-logo.rp{ background:#1B1B25; box-shadow: 0 4px 10px rgba(0,0,0,.2);}
  .rec-name{ font-weight:700; font-size:15px; color:var(--gray-900); margin-bottom:3px; letter-spacing:-0.005em;}
  .rec-desc{ font-size:13.5px; color:var(--gray-500); line-height:1.45; }
  .chat-divider{ height:1px; background:var(--gray-100); margin: 22px 0 16px; }
  .rec-badge{
    display:flex; align-items:center; gap:10px;
    color:var(--violet); font-weight:600; font-size:14px;
  }
  .check{
    width:22px; height:22px; border-radius:50%; background:var(--violet);
    color:#fff; display:flex; align-items:center; justify-content:center;
    flex-shrink:0;
  }

  /* ============ DARK BAND ============ */
  section.dark-band{
    padding: 64px 0;
    background: #f8f8fc;
    color: var(--ink);
  }

  /* Head */
  .dark-band-head{
    max-width: 1150px;
    margin: 0 auto 44px;
    text-align: center;
  }
  .dark-band-head h2{
    font-size: 38px; line-height:1.14; letter-spacing:-0.02em; font-weight:700;
    margin: 0 0 16px; color: var(--ink);
  }
  .dark-band-head h2 .accent{
    background: linear-gradient(90deg,#0057ff,#7c3aed);
    -webkit-background-clip:text; background-clip:text; color:transparent;
    display:block;
  }
  .dark-band-head p{ font-size:15.5px; color:var(--muted); max-width: 480px; margin: 0 auto 28px; }
  .btn-ghost{
    display:inline-flex; align-items:center; gap:8px;
    border: 1.5px solid var(--line);
    color: var(--ink); background: #fff;
    padding: 12px 20px; border-radius:10px; font-weight:600; font-size:14.5px;
    text-decoration:none; transition: background .15s ease, border-color .15s ease;
  }
  .btn-ghost:hover{ background: #f1f0f8; border-color: #c4b8ff; }

  /* Feature cards */
  .feat-cards{
    display:grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .feat-card{
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 28px 26px;
    display:flex; flex-direction:column; gap:12px;
    transition: box-shadow .2s ease, border-color .2s ease;
  }
  .feat-card:hover{
    box-shadow: 0 8px 28px -8px rgba(0,87,255,.12);
    border-color: #c4b8ff;
  }
  .feat-card-mid{
    background: linear-gradient(160deg,#f3f0ff 0%,#fff 60%);
    border-color: #d4c8ff;
  }
  .feat-card-mid:hover{
    box-shadow: 0 8px 28px -8px rgba(91,63,244,.18);
    border-color: #b09cff;
  }
  .feat-icon-wrap{
    width: 46px; height: 46px; border-radius: 12px;
    display:grid; place-items:center;
    flex-shrink:0;
  }
  .fc-blue{ background: rgba(0,87,255,.1); color: #0057ff; }
  .fc-purple{ background: rgba(91,63,244,.12); color: #5B3FF4; }
  .fc-green{ background: rgba(91,208,137,.15); color: #18a05a; }
  .feat-card-num{
    font-size:11px; font-weight:700; letter-spacing:.12em; color: #c4bfdc;
    text-transform:uppercase;
  }
  .feat-card-title{
    font-size:17px; font-weight:700; color: var(--ink);
    margin:0; letter-spacing:-.01em; line-height:1.25;
  }
  .feat-card-desc{
    font-size:13.5px; color:var(--muted); line-height:1.6;
    margin:0; flex:1;
  }
  .feat-card-tag{
    font-size:11.5px; color:#b0aac8;
    font-weight:500; margin-top:4px;
  }

  /* ============ CORE APPROACH ============ */
  section.approach{ padding: 64px 0 60px; text-align:center; }
  .section-eyebrow{
    font-size:11.5px; font-weight:700; letter-spacing:.16em; text-transform:uppercase;
    color:var(--violet);
  }
  .section-title{
    font-size: 36px; font-weight:700; letter-spacing:-0.02em;
    margin: 12px 0 50px; color:var(--ink);
  }
  .three-cols{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 30px; position:relative; }
  .three-cols::before, .three-cols::after{
    content:""; position:absolute; top:8%; bottom:8%; width:1px; background:var(--gray-200);
  }
  .three-cols::before{ left: calc(33.333% - 0px); }
  .three-cols::after{ left: calc(66.666% + 0px); }
  .col{ padding: 0 24px; }
  .col-icon{
    width:64px; height:64px; border-radius:18px;
    background: var(--violet-50);
    color:var(--violet);
    display:flex; align-items:center; justify-content:center;
    margin:0 auto 18px;
  }
  .col-title{ font-size:22px; font-weight:700; margin: 0 0 10px; letter-spacing:-0.01em; }
  .col-desc{ font-size:14.5px; color:var(--gray-500); line-height:1.55; max-width: 240px; margin: 0 auto;}

  /* ============ DIFFERENCE ============ */
  section.difference{ padding: 30px 0 80px; }
  .diff-head{ text-align:center; margin-bottom: 36px; }
  .diff-wrap{
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 18px;
    padding: 32px;
    box-shadow: var(--shadow-md);
    display:grid; grid-template-columns: 1fr 1fr; align-items:stretch; gap: 16px;
    position:relative;
  }
  .diff-side{
    background:#fff; border-radius:14px;
    padding: 22px;
  }
  .diff-side.after{
    background: #F4EFFE;
  }
  .diff-eyebrow{
    text-align:center; font-size:11px; font-weight:700; letter-spacing:.14em;
    text-transform:uppercase; margin-bottom:18px;
  }
  .diff-eyebrow.before{ color:#E04848; }
  .diff-eyebrow.after{ color:var(--violet); }
  .search-bar{
    display:flex; align-items:center; gap:10px;
    border:1px solid var(--gray-200); border-radius:10px; padding: 11px 14px;
    background:#fff; font-size:14px; color:var(--gray-700);
    box-shadow: var(--shadow-sm);
    margin-bottom: 14px;
  }
  .search-bar input{
    border:none; outline:none; flex:1; font-family:inherit; font-size:14px; background:transparent;
    color:var(--gray-700);
  }
  .search-icon{ color:var(--violet); }
  .before-note{
    color:var(--violet); font-size:13.5px; font-weight:600; margin: 6px 0 14px;
  }
  .before-note span{ color:var(--gray-500); font-weight:400;}
  .bar-line{ height:10px; border-radius:6px; background: var(--violet-100); margin: 8px 0; }
  .bar-line.s{ width:55%; }
  .bar-line.m{ width:75%; }
  .bar-line.l{ width:62%; }
  .bar-box{
    background:#F6F4FB; border:1px solid #ECE7F8; border-radius:10px; padding: 10px 12px;
    margin-bottom: 10px;
  }
  .after-rec{
    background:#fff; border-radius: 12px; padding: 16px 18px;
    border:1px solid #ECE3FB;
  }
  .after-rec .chat-header{ margin-bottom:14px; }
  .after-rec .rec-list{ gap: 10px; }
  .after-rec .rec-item{ grid-template-columns: 22px 1fr; gap: 10px; }
  .after-rec .rec-line{ font-size:13.5px; color:var(--gray-700); line-height:1.45; }
  .after-rec .rec-line b{ color: var(--gray-900); }
  .after-rec .chat-divider{ margin: 12px 0 10px; }
  .after-rec .rec-badge{ font-size:13px; }
  .diff-arrow{
    position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
    width: 64px; height:64px; border-radius:50%; background:#fff;
    box-shadow: var(--shadow-lg);
    display:flex; align-items:center; justify-content:center;
    color:var(--violet);
    z-index:2;
  }

  /* ============ PROCESS ============ */
  section.process{ padding: 30px 0 90px; }
  .process-head{ text-align:center; margin-bottom: 50px; }
  .process-line{
    display:grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
    position:relative;
  }
  .process-line::before{
    content:""; position:absolute; top:30px; left: 10%; right: 10%;
    height:1px; background: var(--gray-200);
  }
  .step{ text-align:center; position:relative; }
  .step-icon{
    width:60px; height:60px; border-radius:16px;
    background: var(--violet);
    color:#fff; display:flex; align-items:center; justify-content:center;
    margin: 0 auto 16px; box-shadow: 0 8px 20px rgba(91,63,244,.28);
    position:relative; z-index:1;
  }
  .step-num{ font-size:13px; font-weight:600; color:var(--gray-400); margin-bottom:6px; }
  .step-title{ font-size:15px; font-weight:700; color:var(--ink); margin-bottom: 8px;}
  .step-desc{ font-size:13px; color:var(--gray-500); line-height:1.5; padding: 0 12px;}

  /* ============ CASE STUDY ============ */
  section.case{ padding: 20px 0 80px; }
  .case-card{
    background:#fff;
    border-radius: 18px;
    border:1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    overflow:hidden;
    display:grid; grid-template-columns: 1.1fr 1.2fr 0.95fr;
  }
  .case-left{ padding: 30px 28px; background: #F6F3FB;}
  .case-eyebrow{
    font-size:11.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
    color: var(--violet); margin-bottom: 16px;
  }
  .case-title{
    font-size:20px; font-weight:700; line-height:1.25;
    margin: 0 0 14px; color: var(--ink); letter-spacing:-0.01em;
  }
  .case-text{ font-size:13.5px; color: var(--gray-500); line-height:1.55; margin-bottom:24px; max-width: 280px; }
  .case-author{ display:flex; align-items:center; gap:12px; }
  .case-author img{ width:42px; height:42px; border-radius:50%; object-fit:cover;}
  .case-author .name{ font-size:14px; font-weight:700; color:var(--ink);}
  .case-author .role{ font-size:12.5px; color: var(--gray-500);}

  .case-middle{ padding: 24px 18px 28px; }
  .stats{
    display:grid; grid-template-columns: repeat(3, 1fr); gap:12px; margin-bottom: 6px;
    text-align:center;
  }
  .stat-val{ font-size: 30px; font-weight:800; color:var(--violet); letter-spacing:-0.02em; line-height:1.1;}
  .stat-label{ font-size:12px; color: var(--gray-500); margin-top: 4px; font-weight:500;}
  .chart-wrap{ padding-top:8px; }

  .case-right{
    background:#0A0612; color:#fff; padding: 0;
    position:relative;
    min-height: 320px;
    display:flex; align-items:flex-end;
  }
  .case-right::before{
    content:""; position:absolute; inset:0;
    background:
      radial-gradient(120% 90% at 70% 20%, rgba(155,118,255,.30) 0%, transparent 55%),
      linear-gradient(180deg, #1B1525 0%, #07050E 100%);
  }
  .case-right .photo{
    position:absolute; inset:0;
    background-image: linear-gradient(180deg, rgba(7,5,14,.0) 35%, rgba(7,5,14,.85) 85%), url('https://images.unsplash.com/photo-1539571696357-5a69c17a67c6?w=600&q=80');
    background-size: cover; background-position: center top;
  }
  .video-duration{
    position:absolute; top:14px; right:14px;
    background: rgba(0,0,0,.55); color:#fff;
    font-size:11px; font-weight:600;
    padding: 4px 8px; border-radius:6px;
    z-index:3;
  }
  .play-btn{
    position:absolute; top:42%; left:50%; transform:translate(-50%,-50%);
    width:54px; height:54px; border-radius:50%;
    background: var(--violet);
    display:flex; align-items:center; justify-content:center;
    box-shadow: 0 10px 30px rgba(91,63,244,.55);
    z-index:3; transition: transform .15s ease;
  }
  .play-btn:hover{ transform: translate(-50%,-50%) scale(1.06); }
  .quote{
    position:relative; z-index:2;
    padding: 22px 22px 22px;
    font-size: 13.5px; line-height:1.45;
  }
  .quote-text{ color:#fff; margin-bottom:10px;}
  .quote-author{ color:#B4B0C7; font-size:12.5px;}
  .quote-author b{ color:#fff; }

  /* ============ NEW CASE STUDY CARD ============ */
  .csr-card{
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 48px rgba(0,0,0,0.10);
    border: 1px solid #ECEAF5;
  }
  /* Left dark panel */
  .csr-left{
    background: #06061A;
    padding: 48px 44px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: relative;
    overflow: hidden;
  }
  .csr-left::before{
    content: '';
    position: absolute;
    top: -80px; right: -80px;
    width: 260px; height: 260px;
    background: radial-gradient(circle, rgba(0,87,255,.18) 0%, transparent 65%);
    pointer-events: none;
  }
  .csr-left::after{
    content: '';
    position: absolute;
    bottom: -60px; left: -40px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(124,58,237,.15) 0%, transparent 65%);
    pointer-events: none;
  }
  .csr-company-tag{
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .csr-logo{
    height: 28px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.85;
  }
  .csr-quote{
    margin: 0;
    font-size: 17px;
    font-weight: 500;
    line-height: 1.65;
    color: rgba(255,255,255,0.9);
    font-style: italic;
    position: relative;
    z-index: 1;
    flex: 1;
  }
  .csr-quote::before{
    content: '"';
    font-size: 64px;
    line-height: 0;
    color: #0057ff;
    opacity: 0.5;
    display: block;
    margin-bottom: 14px;
    font-style: normal;
    font-weight: 800;
  }
  .csr-author{
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    z-index: 1;
  }
  .csr-avatar{
    width: 44px; height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(255,255,255,0.15);
  }
  .csr-name{
    font-size: 14px;
    font-weight: 700;
    color: #fff;
  }
  .csr-role{
    font-size: 12.5px;
    color: rgba(255,255,255,0.45);
    margin-top: 2px;
  }
  /* Right light panel */
  .csr-right{
    background: #fff;
    padding: 48px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
  }
  .csr-eyebrow{
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #0057ff;
  }
  .csr-title{
    font-size: 22px;
    font-weight: 800;
    line-height: 1.25;
    color: #0E0F1A;
    letter-spacing: -0.02em;
    margin: 0;
  }
  .csr-desc{
    font-size: 14px;
    color: #6B6F8A;
    line-height: 1.6;
    margin: 0;
  }
  .csr-stats{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 4px;
  }
  .csr-stat{
    background: #F6F5FB;
    border-radius: 12px;
    padding: 16px 14px;
    border: 1px solid #ECEAF5;
  }
  .csr-stat-val{
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, #0057ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.1;
  }
  .csr-stat-lab{
    font-size: 11.5px;
    color: #6B6F8A;
    margin-top: 4px;
    font-weight: 500;
    line-height: 1.3;
  }
  .csr-link{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: #0057ff;
    margin-top: 4px;
    transition: gap 0.2s ease;
  }
  .csr-link:hover{ gap: 10px; }
  .csr-link svg{ flex-shrink: 0; }

  /* csr responsive */
  @media (max-width: 900px){
    .csr-card{ grid-template-columns: 1fr; }
    .csr-left{ padding: 36px 28px; gap: 22px; }
    .csr-right{ padding: 36px 28px; }
    .csr-quote{ font-size: 15px; }
  }
  @media (max-width: 600px){
    .csr-left{ padding: 28px 22px; }
    .csr-right{ padding: 28px 22px; gap: 16px; }
    .csr-quote{ font-size: 14px; }
    .csr-title{ font-size: 19px; }
    .csr-stats{ grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .csr-stat{ padding: 12px 10px; }
    .csr-stat-val{ font-size: 21px; }
    .csr-stat-lab{ font-size: 10.5px; }
  }

  /* ============ FAQ ============ */
  section.faq{ padding: 20px 0 70px; }
  .faq-head{ text-align:center; margin-bottom: 36px; }
  .faq-head .section-eyebrow{ font-size: 12px; }
  .faq-grid{
    display:flex; flex-direction:column; gap:10px;
    max-width: 860px; margin: 0 auto;
  }
  .faq-item{
    background:#fff; border:1px solid var(--line);
    border-radius: 14px; overflow:hidden; cursor:pointer;
    transition: border-color .2s ease, box-shadow .2s ease;
  }
  .faq-item:hover{ border-color:#c4b8ff; }
  .faq-item.open{
    border-color: #0057ff;
    box-shadow: 0 0 0 3px rgba(0,87,255,.07);
  }
  .faq-q{
    display:flex; justify-content:space-between; align-items:center; gap:16px;
    font-size:15.5px; font-weight:600; color:var(--ink);
    padding: 20px 22px;
    cursor:pointer; user-select:none;
  }
  .faq-toggle{
    width: 24px; height:24px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
    font-size: 20px; color:#aaa; transition: transform .25s ease, color .2s ease;
    font-weight:300; line-height:1;
  }
  .faq-item.open .faq-toggle{ transform: rotate(45deg); color: #0057ff; }
  .faq-a{
    font-size:14.5px; color:var(--muted); line-height:1.65;
    padding: 0 22px;
    max-height: 0; overflow:hidden;
    transition: max-height .3s ease, padding .3s ease;
  }
  .faq-item.open .faq-a{ padding: 0 22px 20px; max-height: 300px; }

  /* ============ FOOTER CTA ============ */
  section.footer-cta{ padding: 30px 0 80px; }
  .footer-card{
    background: var(--lav-bg);
    border-radius: 18px;
    padding: 26px 30px;
    display:grid; grid-template-columns: auto 1fr auto; gap:24px; align-items:center;
  }
  .footer-icon{
    width:64px; height:64px; border-radius:16px;
    background: linear-gradient(160deg, #D5C7FF, #A98EFA);
    display:flex; align-items:center; justify-content:center;
    box-shadow: 0 10px 24px rgba(155,118,255,.35);
  }
  .footer-text h3{
    font-size: 22px; font-weight:700; letter-spacing:-0.01em;
    margin: 0 0 4px; color:var(--ink);
  }
  .footer-text p{ font-size:14px; color:var(--gray-500); margin:0; }
  .footer-ctas{ display:flex; gap: 12px; }

  /* ============ ICONS COMMON ============ */
  .ic{ width:28px; height:28px; }

  /* ============ RESPONSIVE ============ */

  @media (max-width: 1280px){
    .container{ padding: 0 60px; }
  }

  @media (max-width: 1100px){
    .container{ padding: 0 40px; }
    h1.hero-title{ font-size: 50px; }
    .hero-grid{ gap: 40px; }
  }

  @media (max-width: 880px){
    .container{ padding: 0 24px; }

    /* Hero */
    .hero{ padding: 52px 0 44px; }
    .hero-grid{ grid-template-columns: 1fr; gap: 36px; }
    .chat-stack{ max-width: 480px; margin: 0 auto; }
    h1.hero-title{ font-size: 40px; }
    .hero-sub{ font-size: 15px; max-width: 100%; }
    .hero-ctas{ flex-wrap: wrap; gap: 10px; }

    /* Dark band */
    section.dark-band{ padding: 48px 0; }
    .dark-band-head{ margin-bottom: 28px; }
    .dark-band-head h2{ font-size: 28px; }
    .feat-cards{ grid-template-columns: 1fr; gap: 12px; }

    /* Approach */
    section.approach{ padding: 40px 0; text-align: left; }
    .three-cols{ grid-template-columns: 1fr; gap: 10px; }
    .three-cols::before, .three-cols::after{ display: none; }
    .col{
      display: flex; align-items: flex-start; gap: 16px;
      padding: 18px 20px;
      background: #fff;
      border: 1px solid #ECEAF5;
      border-radius: 14px;
      text-align: left;
    }
    .col-icon{
      width: 48px; height: 48px; border-radius: 12px;
      flex-shrink: 0; margin: 0;
    }
    .col-title{ font-size: 15px; margin: 0 0 5px; }
    .col-desc{ font-size: 13px; max-width: 100%; margin: 0; line-height: 1.55; }

    /* Difference */
    section.difference{ padding: 20px 0 56px; }
    .diff-wrap{ grid-template-columns: 1fr; gap: 12px; padding: 24px; }
    .diff-arrow{ display: none; }

    /* Process */
    section.process{ padding: 20px 0 60px; }
    .process-line{ grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .process-line::before{ display: none; }

    /* Case */
    section.case{ padding: 20px 0 56px; }
    .case-card{ grid-template-columns: 1fr; }
    .case-right{ min-height: 240px; align-items: flex-end; }
    .stats{ grid-template-columns: repeat(3, 1fr); }

    /* FAQ */
    section.faq{ padding: 20px 0 52px; }
    .faq-grid{ max-width: 100%; }
    .faq-q{ font-size: 14.5px; padding: 16px 18px; }
    .faq-a{ font-size: 14px; }
    .faq-item.open .faq-a{ padding: 0 18px 16px; }
  }

  @media (max-width: 640px){
    .container{ padding: 0 18px; }

    /* Hero */
    .hero{ padding: 40px 0 36px; }
    h1.hero-title{ font-size: 38px; margin: 14px 0 16px; }
    .hero-sub{ font-size: 14.5px; }
    .hero-ctas{ flex-direction: column; gap: 8px; }
    .hero-ctas .btn{ width: 100%; justify-content: center; }
    .chat-stack{ max-width: 100%; }
    .bubble-user{ font-size: 13.5px; max-width: 220px; }
    .chat-card{ padding: 18px 18px; }
    .rec-desc{ display: none; }

    /* Dark band */
    section.dark-band{ padding: 36px 0; }
    .dark-band-head h2{ font-size: 22px; }
    .dark-band-head p{ font-size: 14px; }
    .feat-card{ padding: 20px 18px; }
    .feat-card-title{ font-size: 15.5px; }

    /* Approach */
    section.approach{ padding: 36px 0; }
    .section-title{ font-size: 26px; margin-bottom: 32px; }

    /* Difference */
    .diff-wrap{ padding: 18px; }

    /* Process */
    .process-line{ grid-template-columns: 1fr 1fr; gap: 18px; }
    .step-icon{ width: 50px; height: 50px; }

    /* Case */
    .case-left{ padding: 22px 18px; }
    .case-middle{ padding: 18px; }
    .stat-val{ font-size: 24px; }
    .case-right{ min-height: 200px; }

    /* FAQ */
    .faq-q{ font-size: 14px; padding: 14px 16px; }
    .faq-item.open .faq-a{ padding: 0 16px 14px; }
  }

  @media (max-width: 480px){
    h1.hero-title{ font-size: 34px; }
    .section-title{ font-size: 22px; }
    .process-line{ grid-template-columns: 1fr; }
    .stats{ grid-template-columns: 1fr; gap: 8px; text-align: left; }
    .stat-val{ font-size: 28px; }
    .case-right{ display: none; }
    .dark-band-head h2{ font-size: 20px; }
  }


/* ============================================================
   CHATGPT DEPTH SECTION
   ============================================================ */