/* ============================================================
   KhaiLab — AI at Work 101 landing
   Brand: #000 black, #6A36C9 purple, #C9B3F3 light purple,
          #F4EFFB surface, #FFF white
   ============================================================ */

:root{
  --black:#000;
  --ink:#0E0B1A;
  --purple:#6A36C9;
  --purple-dk:#4D239E;
  --purple-lt:#C9B3F3;
  --surface:#F4EFFB;
  --surface-2:#EAE0FA;
  --border:#D6C9F0;
  --muted:#8A8896;
  --slate:#2A2440;
  --white:#fff;

  --font-display:"Fraunces",Georgia,serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;

  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --shadow-sm:0 1px 2px rgba(14,11,26,.06);
  --shadow-md:0 8px 24px rgba(14,11,26,.08);
  --shadow-lg:0 24px 60px rgba(74,35,158,.18);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--slate);
  background:var(--white);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  font-size:17px;
}
img{max-width:100%;display:block}
a{color:var(--purple);text-decoration:none;transition:color .15s ease}
a:hover{color:var(--purple-dk)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font-body);font-weight:600;
  border:1.5px solid transparent;border-radius:999px;
  cursor:pointer;text-decoration:none;
  transition:transform .15s ease, box-shadow .2s ease, background .2s ease, color .15s ease, border-color .15s ease;
  white-space:nowrap;
}
.btn--sm{padding:.55rem 1.1rem;font-size:.92rem}
.btn--lg{padding:.95rem 1.6rem;font-size:1.02rem}
.btn--xl{padding:1.15rem 2.1rem;font-size:1.12rem}
.btn--full{width:100%}

.btn--primary{background:var(--purple);color:var(--white);border-color:var(--purple)}
.btn--primary:hover{background:var(--purple-dk);border-color:var(--purple-dk);transform:translateY(-1px);box-shadow:var(--shadow-md);color:var(--white)}

.btn--ghost{background:transparent;color:var(--ink);border-color:var(--border)}
.btn--ghost:hover{background:var(--surface);color:var(--ink);border-color:var(--purple-lt)}

/* ============ Container ============ */
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.container--narrow{max-width:780px}
.center{text-align:center}

/* ============ Nav ============ */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:14px 28px;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(10px);
  -webkit-backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--border);
}
.nav__brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:600}
.nav__brand:hover{color:var(--ink)}
.nav__logo{width:32px;height:32px;object-fit:contain}
.nav__wordmark{font-family:var(--font-display);font-weight:600;font-size:1.05rem;letter-spacing:.01em}
.nav__links{margin-left:auto;display:flex;gap:22px;font-size:.95rem}
.nav__links a{color:var(--slate);font-weight:500}
.nav__links a:hover{color:var(--purple)}
@media (max-width:760px){
  .nav__links{display:none}
  .nav__wordmark{font-size:.95rem}
}

/* ============ Eyebrow ============ */
.eyebrow{
  font-size:.82rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--purple);margin:0 0 14px;
}
.eyebrow--center{text-align:center}
.eyebrow--light{color:var(--purple-lt)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:88px 24px 96px;
  background:linear-gradient(180deg,#FBF8FF 0%, #F4EFFB 100%);
}
.hero__inner{position:relative;z-index:2;max-width:880px;margin:0 auto;text-align:center}
.hero__title{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(2.4rem,5.5vw,4.2rem);
  line-height:1.05;letter-spacing:-.02em;
  color:var(--ink);
  margin:0 0 22px;
}
.grad{
  background:linear-gradient(90deg,var(--purple) 0%, var(--purple-dk) 60%, var(--ink) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero__sub{
  font-size:clamp(1.05rem,1.4vw,1.22rem);
  color:var(--slate);max-width:680px;margin:0 auto 32px;
}
.hero__sub em{font-style:italic;color:var(--purple-dk);font-weight:500;font-family:var(--font-display)}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:18px}
.hero__meta{font-size:.92rem;color:var(--muted);margin:0}

.hero__bgblob{
  position:absolute;inset:auto -20% -45% -20%;height:60%;
  background:radial-gradient(60% 60% at 50% 50%,rgba(106,54,201,.22),transparent 70%);
  filter:blur(40px);z-index:1;
}

/* ============ Section ============ */
.section{padding:96px 24px}
.section--alt{background:var(--surface)}
.section--dark{
  background:var(--ink);
  color:var(--white);
  background-image:
    radial-gradient(60% 60% at 20% 0%,rgba(106,54,201,.35),transparent 60%),
    radial-gradient(60% 60% at 90% 100%,rgba(201,179,243,.18),transparent 60%);
}
.section__title{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(1.9rem,3.4vw,2.8rem);
  line-height:1.15;letter-spacing:-.015em;
  color:var(--ink);text-align:center;margin:0 0 16px;
}
.section__title--light{color:var(--white)}
.section__lede{
  text-align:center;max-width:680px;margin:0 auto 56px;
  color:var(--slate);font-size:1.08rem;
}
.section__lede--light{color:var(--purple-lt)}
.underline-accent{
  background-image:linear-gradient(120deg,var(--purple-lt) 0%,var(--purple-lt) 100%);
  background-repeat:no-repeat;background-size:100% 38%;background-position:0 88%;
  padding:0 4px;
}

/* ============ Steps (framework) ============ */
.steps{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.step{
  background:var(--white);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:32px 28px;
  position:relative;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--purple-lt)}
.step__num{
  display:inline-block;
  font-family:var(--font-display);font-weight:700;font-size:.85rem;letter-spacing:.18em;
  color:var(--purple);background:var(--surface);
  padding:5px 11px;border-radius:999px;margin-bottom:18px;
}
.step__h{
  font-family:var(--font-display);font-weight:600;font-size:1.55rem;
  color:var(--ink);margin:0 0 10px;letter-spacing:-.01em;
}
.step__p{margin:0;color:var(--slate);font-size:1rem;line-height:1.6}

.pullquote{
  max-width:760px;margin:64px auto 0;
  font-family:var(--font-display);font-style:italic;font-weight:500;
  font-size:clamp(1.2rem,2vw,1.55rem);line-height:1.45;
  color:var(--ink);text-align:center;
  padding:32px 24px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);
}
.pullquote cite{
  display:block;margin-top:14px;font-style:normal;font-family:var(--font-body);
  font-size:.92rem;color:var(--muted);letter-spacing:.02em;font-weight:500;
}

/* ============ Audience ============ */
.audience{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:980px;margin:0 auto}
@media (max-width:780px){.audience{grid-template-columns:1fr}}
.audience__card{
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:36px 32px;
}
.audience__card h3{
  font-family:var(--font-display);font-weight:600;font-size:1.4rem;
  color:var(--ink);margin:0 0 18px;
}
.audience__card--dark{background:var(--ink);border-color:var(--ink)}
.audience__card--dark h3{color:var(--white)}
.audience__card--dark li{color:#D6CFE9}

.check, .x{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px}
.check li, .x li{position:relative;padding-left:32px;line-height:1.55}
.check li::before{
  content:"";position:absolute;left:0;top:6px;width:20px;height:20px;
  background:var(--purple);border-radius:50%;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='4 12 10 18 20 6'/></svg>");
  background-size:14px 14px;background-position:center;background-repeat:no-repeat;
}
.x li::before{
  content:"";position:absolute;left:0;top:6px;width:20px;height:20px;
  background:#3B2F5C;border-radius:50%;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C9B3F3' stroke-width='3' stroke-linecap='round'><line x1='6' y1='6' x2='18' y2='18'/><line x1='18' y1='6' x2='6' y2='18'/></svg>");
  background-size:12px 12px;background-position:center;background-repeat:no-repeat;
}

/* ============ Pricing card ============ */
.pricecard{
  max-width:1000px;margin:0 auto;
  display:grid;grid-template-columns:1fr 1.15fr;gap:0;
  background:var(--white);border:1px solid var(--border);
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-md);
}
@media (max-width:820px){.pricecard{grid-template-columns:1fr}}
.pricecard__left{
  padding:44px 40px;
  background:linear-gradient(135deg,var(--ink) 0%, #1A1136 100%);
  color:var(--white);
}
.pricecard__eyebrow{
  font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--purple-lt);margin:0 0 10px;
}
.pricecard__title{
  font-family:var(--font-display);font-weight:600;font-size:1.75rem;
  line-height:1.2;margin:0 0 28px;color:var(--white);
}
.pricecard__price{margin:0 0 14px;display:flex;flex-direction:column;gap:2px}
.pricecard__amt{font-family:var(--font-display);font-weight:700;font-size:2.4rem;color:var(--white)}
.pricecard__per{font-size:.92rem;color:var(--purple-lt)}
.pricecard__fine{font-size:.92rem;color:#C1B7DC;margin:18px 0 0;line-height:1.55}

.pricecard__right{padding:44px 40px}
.pricecard__what{
  font-size:.82rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--purple);margin:0 0 18px;
}
.incl{list-style:none;padding:0;margin:0 0 28px;display:flex;flex-direction:column;gap:13px}
.incl li{position:relative;padding-left:28px;line-height:1.55;font-size:1rem}
.incl li::before{
  content:"";position:absolute;left:0;top:8px;width:16px;height:16px;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236A36C9' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='4 12 10 18 20 6'/></svg>");
  background-size:contain;background-repeat:no-repeat;
}

/* ============ Opt-in ============ */
.optin{max-width:680px;margin:32px auto 0}
.optin__row{
  display:grid;grid-template-columns:1fr 1.2fr auto;gap:10px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(201,179,243,.22);
  border-radius:var(--r-lg);
  padding:10px;
}
@media (max-width:720px){.optin__row{grid-template-columns:1fr}}
.optin input[type=text],.optin input[type=email]{
  background:transparent;border:none;outline:none;
  color:var(--white);font-family:var(--font-body);font-size:1rem;
  padding:14px 16px;border-radius:12px;
}
.optin input::placeholder{color:rgba(255,255,255,.55)}
.optin input:focus{background:rgba(255,255,255,.08)}
.optin .btn--primary{background:var(--purple-lt);color:var(--ink);border-color:var(--purple-lt)}
.optin .btn--primary:hover{background:var(--white);border-color:var(--white);color:var(--ink)}
.optin__fine{font-size:.86rem;color:rgba(255,255,255,.55);text-align:center;margin:14px 0 0}

/* ============ Final CTA ============ */
.muted{color:var(--muted);font-size:.95rem;margin-top:18px}
.muted strong{color:var(--ink)}

/* ============ Footer ============ */
.footer{
  background:var(--ink);color:#B6ADD0;
  padding:48px 24px 32px;
}
.footer a{color:var(--purple-lt)}
.footer a:hover{color:var(--white)}
.footer__row{
  display:flex;justify-content:space-between;align-items:flex-start;gap:24px;flex-wrap:wrap;
  padding-bottom:24px;border-bottom:1px solid rgba(201,179,243,.15);
}
.footer__brand{display:flex;gap:14px;align-items:center}
.footer__logo{width:42px;height:42px;object-fit:contain}
.footer__name{font-family:var(--font-display);font-weight:600;color:var(--white);font-size:1.1rem;margin:0}
.footer__tag{margin:2px 0 0;font-size:.92rem;color:var(--purple-lt);font-style:italic}
.footer__meta{text-align:right;font-size:.92rem;line-height:1.7}
@media (max-width:640px){.footer__meta{text-align:left}}
.footer__copyright{
  max-width:1120px;margin:24px auto 0;font-size:.82rem;color:#7E76A0;
}

/* Reduced motion */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}