:root{
    --bg:#FAFAF8;
    --bg-alt:#F1F0EB;
    --panel:#FFFFFF;
    --ink:#15161A;
    --ink-soft:#5C5E66;
    --ink-faint:#9A9B9F;
    --line:#E7E5DF;
    --accent:#1E7F5C;
    --accent-deep:#134F39;
    --accent-soft:#E7F3EC;
    --accent-soft-2:#D8EEE4;
    --radius-lg:22px;
    --radius-md:14px;
    --radius-sm:9px;
    --shadow-sm: 0 1px 2px rgba(21,22,26,0.04), 0 1px 1px rgba(21,22,26,0.03);
    --shadow-md: 0 8px 24px rgba(21,22,26,0.06), 0 2px 6px rgba(21,22,26,0.04);
    --ease: cubic-bezier(.19,1,.22,1);
  }

  *{ box-sizing:border-box; margin:0; padding:0; }
  html{ scroll-behavior:smooth; }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
  }

  body{
    background:var(--bg);
    color:var(--ink);
    font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing:antialiased;
    line-height:1.5;
    overflow-x:hidden;
  }

  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; cursor:pointer; border:none; background:none; }
  .mono{ font-family:'IBM Plex Mono', monospace; }

  ::selection{ background:var(--accent-soft-2); color:var(--accent-deep); }

  :focus-visible{
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .wrap{
    max-width:1180px;
    margin:0 auto;
    padding:0 32px;
  }
  @media (max-width:640px){ .wrap{ padding:0 20px; } }

  /* ---------- Logo mark: barcode -> speech bubble ---------- */
  .logo{ display:flex; align-items:center; gap:10px; }
  .logo-mark{ display:block; flex-shrink:0; }
  .logo-word{ font-weight:800; font-size:17px; letter-spacing:-0.02em; }

  /* ---------- Nav ---------- */
  header.nav{
    position:sticky; top:0; z-index:50;
    background:rgba(250,250,248,0.82);
    backdrop-filter:blur(10px) saturate(1.4);
    -webkit-backdrop-filter:blur(10px) saturate(1.4);
    border-bottom:1px solid transparent;
    transition:border-color .3s var(--ease);
  }
  header.nav.scrolled{ border-bottom-color:var(--line); }
  .nav-inner{
    height:72px;
    display:flex; align-items:center; justify-content:space-between;
  }
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:10px 18px;
    border-radius:100px;
    font-weight:600;
    font-size:14.5px;
    transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
    white-space:nowrap;
  }
  .btn-ghost{
    color:var(--ink);
    border:1px solid var(--line);
    background:var(--panel);
  }
  .btn-ghost:hover{ border-color:var(--ink-faint); transform:translateY(-1px); }
  .btn-primary{
    color:#fff;
    background:var(--accent);
    box-shadow:0 1px 2px rgba(21,79,57,0.15), 0 6px 16px rgba(30,127,92,0.22);
  }
  .btn-primary:hover{ background:var(--accent-deep); transform:translateY(-1px); box-shadow:0 2px 4px rgba(21,79,57,0.18), 0 10px 22px rgba(30,127,92,0.28); }
  .btn-primary:active{ transform:translateY(0px) scale(.98); }
  .btn-block{ width:100%; }

  /* ---------- Hero ---------- */
  .hero{
    padding:76px 0 40px;
    position:relative;
  }
  .hero-grid{
    display:grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap:56px;
    align-items:center;
  }
  @media (max-width:920px){
    .hero-grid{ grid-template-columns:1fr; gap:56px; }
    .hero{ padding:44px 0 20px; }
  }

  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    padding:7px 13px 7px 10px;
    border-radius:100px;
    background:var(--accent-soft);
    color:var(--accent-deep);
    font-size:12px; font-weight:600;
    letter-spacing:.06em;
    margin-bottom:22px;
  }
  .eyebrow-dot{
    width:6px; height:6px; border-radius:50%;
    background:var(--accent);
    box-shadow:0 0 0 3px var(--accent-soft-2);
    animation:pulse 2.2s ease-in-out infinite;
  }
  @keyframes pulse{
    0%,100%{ opacity:1; }
    50%{ opacity:.45; }
  }

  h1.headline{
    font-size:clamp(2.5rem, 5.4vw, 3.85rem);
    font-weight:800;
    letter-spacing:-0.035em;
    line-height:1.06;
    color:var(--ink);
    max-width:15ch;
  }
  h1.headline .accent-word{ color:var(--accent); }

  .sub{
    margin-top:22px;
    font-size:18px;
    color:var(--ink-soft);
    max-width:38ch;
    line-height:1.55;
  }

  .hero-cta{ margin-top:34px; display:flex; flex-direction:column; align-items:flex-start; gap:12px; }
  .hero-cta .btn-primary{ padding:15px 26px; font-size:15.5px; }
  .hero-cta .helper{ font-size:13.5px; color:var(--ink-faint); padding-left:2px; }

  /* ---------- Phone mockup ---------- */
  .phone-stage{
    position:relative;
    display:flex; justify-content:center; align-items:center;
    min-height:560px;
  }
  .bubble-bg{
    position:absolute;
    top:50%; left:50%;
    width:460px; height:460px;
    transform:translate(-50%,-50%);
    z-index:0;
    opacity:.55;
  }
  .phone{
    position:relative;
    z-index:2;
    width:264px;
    height:538px;
    background:var(--ink);
    border-radius:40px;
    padding:12px;
    box-shadow: 0 30px 60px -18px rgba(21,22,26,0.35), 0 10px 24px -8px rgba(21,22,26,0.18);
    transform:rotate(1.2deg);
  }
  .phone-notch{
    position:absolute;
    top:12px; left:50%; transform:translateX(-50%);
    width:88px; height:22px;
    background:var(--ink);
    border-radius:0 0 14px 14px;
    z-index:5;
  }
  .phone-screen{
    position:relative;
    width:100%; height:100%;
    background:#fff;
    border-radius:30px;
    overflow:hidden;
  }
  .screen-panel{
    position:absolute; inset:0;
    padding:34px 18px 18px;
    display:flex; flex-direction:column;
    opacity:0; transform:translateX(14px);
    transition:opacity .55s var(--ease), transform .55s var(--ease);
    pointer-events:none;
  }
  .screen-panel.active{ opacity:1; transform:translateX(0); pointer-events:auto; }

  /* screen 1: scan */
  .scan-label{ font-size:11px; font-weight:600; color:var(--ink-faint); letter-spacing:.05em; text-transform:uppercase; margin-bottom:14px; }
  .scan-frame{
    flex:1;
    border-radius:18px;
    background:#0E0F12;
    position:relative;
    overflow:hidden;
    display:flex; align-items:center; justify-content:center;
  }
  .scan-corners span{
    position:absolute; width:22px; height:22px;
    border-color:var(--accent);
    border-style:solid;
    border-width:0;
  }
  .scan-corners .c1{ top:16px; left:16px; border-top-width:3px; border-left-width:3px; border-radius:6px 0 0 0; }
  .scan-corners .c2{ top:16px; right:16px; border-top-width:3px; border-right-width:3px; border-radius:0 6px 0 0; }
  .scan-corners .c3{ bottom:16px; left:16px; border-bottom-width:3px; border-left-width:3px; border-radius:0 0 0 6px; }
  .scan-corners .c4{ bottom:16px; right:16px; border-bottom-width:3px; border-right-width:3px; border-radius:0 0 6px 0; }
  .scan-laser{
    position:absolute; left:16px; right:16px; height:2px;
    background:linear-gradient(90deg, transparent, var(--accent), transparent);
    animation:sweep 1.8s ease-in-out infinite;
    box-shadow:0 0 10px 1px rgba(30,127,92,0.7);
  }
  @keyframes sweep{
    0%,100%{ top:22%; }
    50%{ top:74%; }
  }
  .mini-barcode{ display:flex; gap:2px; align-items:flex-end; height:46px; }
  .mini-barcode i{ display:block; width:2.4px; background:#C9CBCE; border-radius:1px; }

  /* screen 2: scanning product */
  .prod-card{
    background:var(--bg-alt);
    border-radius:18px;
    padding:16px;
    display:flex; flex-direction:column; align-items:center; gap:10px;
    flex:1; justify-content:center;
  }
  .prod-swatch{
    width:96px; height:96px; border-radius:16px;
    background:linear-gradient(155deg,#F4EFE3,#E9E2CF);
    display:flex; align-items:center; justify-content:center;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.04);
  }
  .prod-name{ font-size:13px; font-weight:700; margin-top:4px; }
  .prod-sub{ font-size:11px; color:var(--ink-faint); }
  .progress-track{
    width:100%; height:4px; background:var(--line); border-radius:10px; overflow:hidden; margin-top:6px;
  }
  .progress-fill{
    height:100%; width:0%; background:var(--accent); border-radius:10px;
    animation:load 2.6s ease-in-out infinite;
  }
  @keyframes load{
    0%{ width:6%; }
    60%{ width:92%; }
    100%{ width:92%; }
  }

  /* screen 3: analysis */
  .an-title{ font-size:14.5px; font-weight:700; margin-bottom:2px; }
  .an-sub{ font-size:10.5px; color:var(--ink-faint); margin-bottom:12px; }
  .an-row{
    display:flex; justify-content:space-between; align-items:center;
    padding:8px 0; border-top:1px solid var(--line);
    font-size:11.5px;
  }
  .an-row:first-of-type{ border-top:none; }
  .an-tag{
    font-size:9.5px; font-weight:700; padding:3px 7px; border-radius:100px;
    text-transform:uppercase; letter-spacing:.03em;
  }
  .tag-good{ background:var(--accent-soft); color:var(--accent-deep); }
  .tag-warn{ background:#FBEFE0; color:#9A5B12; }
  .an-chips{ display:flex; gap:6px; margin-top:12px; flex-wrap:wrap; }
  .an-chip{
    font-size:9.5px; font-weight:600; padding:5px 9px; border-radius:100px;
    background:var(--bg-alt); color:var(--ink-soft);
  }

  .phone-dots{
    position:absolute; bottom:-30px; left:50%; transform:translateX(-50%);
    display:flex; gap:6px; z-index:3;
  }
  .phone-dots i{
    width:6px; height:6px; border-radius:50%; background:var(--line);
    transition:background .3s var(--ease), width .3s var(--ease);
  }
  .phone-dots i.active{ background:var(--accent); width:16px; border-radius:4px; }

  /* ---------- Sections shared ---------- */
  section{ padding:96px 0; }
  @media (max-width:640px){ section{ padding:64px 0; } }

  .section-head{ max-width:640px; margin-bottom:52px; }
  .section-eyebrow{ font-size:12px; font-weight:600; color:var(--accent-deep); letter-spacing:.08em; text-transform:uppercase; margin-bottom:14px; }
  h2.section-title{
    font-size:clamp(1.9rem, 3.6vw, 2.6rem);
    font-weight:800;
    letter-spacing:-0.03em;
    line-height:1.14;
  }
  .section-text{ margin-top:16px; font-size:16.5px; color:var(--ink-soft); max-width:52ch; line-height:1.6; }

  hr.divider{ border:none; border-top:1px solid var(--line); }

  /* ---------- Features ---------- */
  .features{ background:var(--bg); }
  .feature-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:20px;
  }
  @media (max-width:820px){ .feature-grid{ grid-template-columns:1fr; } }
  .feature-card{
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:30px 26px;
    transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  }
  .feature-card:hover{
    transform:translateY(-3px);
    box-shadow:var(--shadow-md);
    border-color:#DDDBD3;
  }
  .feature-icon{
    width:42px; height:42px; border-radius:12px;
    background:var(--accent-soft);
    display:flex; align-items:center; justify-content:center;
    margin-bottom:20px;
  }
  .feature-title{ font-size:17px; font-weight:700; letter-spacing:-0.01em; margin-bottom:8px; }
  .feature-desc{ font-size:14.5px; color:var(--ink-soft); line-height:1.55; }

  /* ---------- India section / flow ---------- */
  .india{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
  .flow{
    margin-top:56px;
    display:flex; align-items:center; justify-content:center;
    gap:0;
    flex-wrap:wrap;
  }
  .flow-node{
    display:flex; flex-direction:column; align-items:center; gap:14px;
    width:180px;
  }
  .flow-icon{
    width:74px; height:74px; border-radius:20px;
    background:var(--panel);
    border:1px solid var(--line);
    display:flex; align-items:center; justify-content:center;
    box-shadow:var(--shadow-sm);
  }
  .flow-icon.is-accent{ background:var(--accent); border-color:var(--accent); box-shadow:0 8px 20px rgba(30,127,92,0.25); }
  .flow-label{ font-size:12px; font-weight:700; letter-spacing:.06em; text-transform:uppercase; text-align:center; color:var(--ink); }
  .flow-sub{ font-size:12px; color:var(--ink-faint); text-align:center; margin-top:-8px; }
  .flow-line{
    width:80px; height:1px;
    background:repeating-linear-gradient(90deg, var(--ink-faint) 0 6px, transparent 6px 12px);
    margin:0 6px;
    position:relative;
    top:-24px;
  }
  @media (max-width:720px){
    .flow{ flex-direction:column; gap:22px; }
    .flow-line{ width:1px; height:36px; top:0; background:repeating-linear-gradient(180deg, var(--ink-faint) 0 6px, transparent 6px 12px); }
  }

  /* ---------- Waitlist ---------- */
  .waitlist{ background:var(--bg); }
  .waitlist-card{
    max-width:560px;
    margin:0 auto;
    text-align:center;
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:28px;
    padding:56px 44px;
    box-shadow:var(--shadow-md);
    position:relative;
    overflow:hidden;
  }
  @media (max-width:560px){ .waitlist-card{ padding:40px 24px; } }

  .waitlist-card h2{
    font-size:clamp(1.7rem, 3.2vw, 2.15rem);
    font-weight:800; letter-spacing:-0.03em;
  }
  .waitlist-card p.lede{ margin-top:12px; color:var(--ink-soft); font-size:15.5px; }

  form#waitlistForm{ margin-top:30px; }
  .field-row{
    display:flex; gap:10px; align-items:flex-start;
  }
  @media (max-width:480px){ .field-row{ flex-direction:column; } }
  .input-wrap{ flex:1; text-align:left; }
  input[type="email"]{
    width:100%;
    padding:14px 16px;
    font-size:15px;
    border-radius:12px;
    border:1px solid var(--line);
    background:var(--bg-alt);
    color:var(--ink);
    transition:border-color .2s var(--ease), background .2s var(--ease), box-shadow .2s var(--ease);
  }
  input[type="email"]::placeholder{ color:var(--ink-faint); }
  input[type="email"]:focus{
    outline:none;
    border-color:var(--accent);
    background:var(--panel);
    box-shadow:0 0 0 4px var(--accent-soft);
  }
  input[type="email"].invalid{ border-color:#C24545; box-shadow:0 0 0 4px #FBE8E8; }
  .field-error{
    font-size:12.5px; color:#C24545; margin-top:8px; text-align:left; min-height:16px;
    opacity:0; transform:translateY(-3px); transition:opacity .2s var(--ease), transform .2s var(--ease);
  }
  .field-error.show{ opacity:1; transform:translateY(0); }
  @media (max-width:480px){ #waitlistForm .btn{ width:100%; } }

  .waitlist-note{ margin-top:16px; font-size:12.5px; color:var(--ink-faint); }

  /* success state */
  .success-state{
    display:none;
    flex-direction:column; align-items:center;
    padding-top:6px;
  }
  .success-state.show{ display:flex; animation:riseIn .5s var(--ease); }
  @keyframes riseIn{ from{ opacity:0; transform:translateY(10px);} to{ opacity:1; transform:translateY(0);} }
  .check-ring{
    width:64px; height:64px; border-radius:50%;
    background:var(--accent-soft);
    display:flex; align-items:center; justify-content:center;
    margin-bottom:18px;
    animation:ringPop .5s var(--ease);
  }
  @keyframes ringPop{ 0%{ transform:scale(.6); opacity:0; } 70%{ transform:scale(1.08); } 100%{ transform:scale(1); opacity:1; } }
  .success-state h3{ font-size:20px; font-weight:800; letter-spacing:-0.02em; }
  .success-state p{ margin-top:8px; color:var(--ink-soft); font-size:14.5px; }

  .research-block{
    margin-top:30px; padding-top:26px; border-top:1px solid var(--line);
    display:none;
  }
  .research-block.show{ display:block; animation:riseIn .5s var(--ease) .15s both; }
  .research-q{ font-size:13.5px; font-weight:600; color:var(--ink-soft); margin-bottom:14px; }
  .chip-row{ display:flex; flex-wrap:wrap; gap:8px; justify-content:center; }
  .chip{
    padding:9px 14px; font-size:13px; font-weight:600;
    border-radius:100px; border:1px solid var(--line);
    background:var(--bg-alt); color:var(--ink-soft);
    transition:all .2s var(--ease);
  }
  .chip:hover{ border-color:var(--ink-faint); color:var(--ink); }
  .chip.picked{ background:var(--accent); border-color:var(--accent); color:#fff; }
  .research-thanks{ margin-top:14px; font-size:12.5px; color:var(--accent-deep); font-weight:600; opacity:0; transition:opacity .2s var(--ease); }
  .research-thanks.show{ opacity:1; }
  .skip-link{ display:inline-block; margin-top:14px; font-size:12.5px; color:var(--ink-faint); text-decoration:underline; text-underline-offset:3px; }
  .skip-link:hover{ color:var(--ink-soft); }

  /* ---------- Footer ---------- */
  footer{ padding:56px 0 40px; border-top:1px solid var(--line); }
  .footer-inner{
    display:flex; flex-direction:column; align-items:center; gap:16px; text-align:center;
  }
  .footer-tagline{ font-size:13.5px; color:var(--ink-faint); }
  .footer-links{ display:flex; gap:22px; font-size:13px; color:var(--ink-soft); margin-top:8px; flex-wrap:wrap; justify-content:center; }
  .footer-links a{ transition:color .2s var(--ease); }
  .footer-links a:hover{ color:var(--ink); }
  .footer-copy{ font-size:12px; color:var(--ink-faint); margin-top:18px; }

  /* reveal on scroll */
  .reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
  .reveal.in{ opacity:1; transform:translateY(0); }