/* =====================================================================
   AI Expert Academy — Design System  v2  "Warm Editorial Edtech"
   Light cream paper · deep-emerald ink · coral sparks
   Display: Bricolage Grotesque · Body: Plus Jakarta Sans · Mono: JetBrains
   (Variable NAMES kept from v1 for backward-compat; values remapped light)
   ===================================================================== */

:root{
  /* surfaces (names kept; values now light) */
  --ink:#faf8f3;          /* page background — warm cream  */
  --ink-2:#f3eee4;        /* alternate section background  */
  --ink-3:#ece5d7;        /* deeper tint (chips, art beds) */
  --card:#ffffff;         /* cards / panels                */

  /* lines */
  --line:rgba(22,32,28,.10);
  --line-2:rgba(22,32,28,.18);

  /* text */
  --txt:#16201c;          /* deep green-black ink          */
  --txt-dim:#586a60;      /* muted body                    */
  --txt-faint:#9aa49b;    /* faint captions                */

  /* accents (names kept) */
  --lime:#0fa968;         /* PRIMARY emerald               */
  --lime-deep:#0a7d4e;    /* darker emerald                */
  --amber:#ff5c35;        /* SHARP coral accent            */
  --violet:#ffc24b;       /* warm gold (gradient partner)  */

  --radius:22px;
  --radius-sm:14px;
  --maxw:1200px;
  --shadow:0 22px 60px -28px rgba(20,40,30,.35);
  --shadow-sm:0 10px 30px -16px rgba(20,40,30,.25);
  --ring:0 0 0 4px rgba(15,169,104,.16);

  --font-display:'Bricolage Grotesque','Sora',system-ui,sans-serif;
  --font-body:'Plus Jakarta Sans','Manrope',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}

*{margin:0;padding:0;box-sizing:border-box}
*,*::before,*::after{min-width:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
html,body{max-width:100%;overflow-x:hidden}
body{
  font-family:var(--font-body);
  background:var(--ink);
  color:var(--txt);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  position:relative;
  overflow-wrap:break-word;
  word-wrap:break-word;
}
img,svg,video,iframe,canvas{max-width:100%;height:auto}
input,select,textarea,button{font:inherit;max-width:100%}
/* atmospheric background: soft mesh + faint grain */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60vw 60vw at 85% -10%, rgba(15,169,104,.10), transparent 60%),
    radial-gradient(50vw 50vw at -10% 10%, rgba(255,92,53,.08), transparent 55%),
    radial-gradient(40vw 40vw at 50% 110%, rgba(255,194,75,.10), transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,4vw,24px);width:100%}
section{position:relative}
::selection{background:rgba(15,169,104,.22)}

/* scroll progress bar */
.scroll-prog{position:fixed;top:0;left:0;height:3px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--lime),var(--amber));transition:width .1s linear}

/* ---- Announcement bar ---------------------------------------------- */
.topbar-announce{
  background:linear-gradient(90deg,var(--lime-deep),var(--lime));color:#fff;
  font-size:.84rem;text-align:center;padding:9px 16px;font-weight:600;
  font-family:var(--font-body);letter-spacing:.01em
}
.topbar-announce a{text-decoration:underline;text-underline-offset:2px}

/* ---- Buttons -------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);font-weight:600;font-size:.95rem;
  padding:13px 24px;border-radius:999px;border:1.5px solid transparent;
  cursor:pointer;transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow .2s,background .2s,color .2s;
  white-space:nowrap;will-change:transform
}
.btn-primary{background:var(--lime);color:#fff;box-shadow:0 10px 26px -10px rgba(15,169,104,.65)}
.btn-primary:hover{transform:translateY(-3px);background:var(--lime-deep);box-shadow:0 16px 34px -12px rgba(15,169,104,.7)}
.btn-ghost{background:transparent;color:var(--txt);border-color:var(--line-2)}
.btn-ghost:hover{background:#fff;border-color:var(--txt);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.btn-dark{background:var(--txt);color:#fff}
.btn-dark:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.btn-sm{padding:9px 17px;font-size:.85rem}

/* ---- Header --------------------------------------------------------- */
.site-header{position:sticky;top:0;z-index:60;transition:all .3s ease}
.site-header .nav-shell{
  background:rgba(250,248,243,.72);backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid transparent;transition:all .3s ease
}
.site-header.scrolled .nav-shell{
  background:rgba(255,255,255,.85);border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(20,40,30,.5)
}
.nav{display:flex;align-items:center;gap:28px;height:74px;transition:height .3s ease}
.site-header.scrolled .nav{height:62px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:700;font-size:1.16rem;letter-spacing:-.01em;min-width:0}
.brand-logo{height:42px;width:auto;max-width:210px;display:block;object-fit:contain;transition:height .3s}
.site-header.scrolled .brand-logo{height:36px}
.site-footer .brand-logo{height:46px;max-width:230px}
.brand .logo{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--lime),var(--lime-deep));color:#fff;
  font-weight:800;font-size:1.05rem;box-shadow:0 8px 20px -8px rgba(15,169,104,.6);
  transition:transform .3s
}
.brand:hover .logo{transform:rotate(-8deg) scale(1.05)}
.brand b{color:var(--lime-deep)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:14px}
.nav-links a{position:relative;font-size:.94rem;color:var(--txt-dim);font-weight:600;padding:4px 0;transition:color .15s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;border-radius:2px;background:var(--lime);transition:width .25s ease}
.nav-links a:hover{color:var(--txt)}
.nav-links a:hover::after{width:100%}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:none;color:var(--txt);font-size:1.7rem;cursor:pointer}

/* ---- Hero ----------------------------------------------------------- */
.hero{padding:72px 0 54px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:54px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);
  font-size:.76rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  color:var(--lime-deep);background:rgba(15,169,104,.10);border:1px solid rgba(15,169,104,.22);
  padding:7px 15px;border-radius:999px;margin-bottom:22px
}
.hero h1{
  font-family:var(--font-display);font-weight:700;font-size:clamp(2.5rem,5.4vw,4rem);
  line-height:1.02;letter-spacing:-.025em;margin-bottom:22px;color:var(--txt)
}
.hero h1 .hl{position:relative;white-space:nowrap;color:var(--lime-deep)}
.hero h1 .hl::after{content:"";position:absolute;left:-2%;right:-2%;bottom:.08em;height:.34em;z-index:-1;
  background:linear-gradient(90deg,rgba(255,194,75,.55),rgba(255,92,53,.45));border-radius:6px;transform:rotate(-1deg)}
.hero p.lead{font-size:1.14rem;color:var(--txt-dim);max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:38px;flex-wrap:wrap}
.hero-stats .stat b{font-family:var(--font-display);font-size:1.85rem;font-weight:700;color:var(--txt);display:block;letter-spacing:-.02em}
.hero-stats .stat span{font-size:.84rem;color:var(--txt-faint);font-weight:500}

/* hero bento visual */
.hero-visual{position:relative;--mx:70%;--my:30%}
.hero-visual::after{content:"";position:absolute;inset:-10%;z-index:1;pointer-events:none;border-radius:40px;
  background:radial-gradient(220px 220px at var(--mx) var(--my),rgba(255,255,255,.45),transparent 60%);
  opacity:0;transition:opacity .3s}
.hero-visual:hover::after{opacity:1}
.mesh{position:absolute;inset:-10% -6%;z-index:0;border-radius:40px;filter:blur(36px);opacity:.7;
  background:
    radial-gradient(40% 40% at 30% 30%,rgba(15,169,104,.5),transparent 70%),
    radial-gradient(45% 45% at 80% 25%,rgba(255,194,75,.5),transparent 70%),
    radial-gradient(45% 45% at 60% 85%,rgba(255,92,53,.4),transparent 70%);
  animation:meshFloat 12s ease-in-out infinite alternate}
@keyframes meshFloat{to{transform:translate3d(0,-14px,0) scale(1.04)}}
.bento{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.bento .b-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow);transition:transform .3s}
.bento .b-lg{grid-column:1/3}
.b-card .b-h{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.b-card .b-h .ic{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:1.2rem;background:rgba(15,169,104,.12);color:var(--lime-deep)}
.b-card .b-h .ic.coral{background:rgba(255,92,53,.12);color:var(--amber)}
.b-card .b-h .ic.gold{background:rgba(255,194,75,.18);color:#c98a14}
.b-card h4{font-family:var(--font-display);font-size:.98rem;font-weight:600}
.b-card p{font-size:.8rem;color:var(--txt-faint);margin-top:2px}
.b-progress{height:8px;border-radius:999px;background:var(--ink-3);overflow:hidden;margin-top:12px}
.b-progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--lime),var(--lime-deep));width:0;animation:fill 2s 1s forwards ease-out}
@keyframes fill{to{width:78%}}
.b-chip{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.72rem;color:var(--lime-deep);background:rgba(15,169,104,.10);padding:4px 9px;border-radius:8px;margin:3px 3px 0 0}
.float-chip{position:absolute;z-index:3;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 14px;box-shadow:var(--shadow);display:flex;align-items:center;gap:9px;font-weight:600;font-size:.84rem;font-family:var(--font-display)}
.float-chip .d{width:9px;height:9px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 4px rgba(15,169,104,.2)}
.float-chip.fc1{top:-18px;right:8%;animation:bob 4s ease-in-out infinite}
.float-chip.fc2{bottom:-16px;left:-4%;animation:bob 5s ease-in-out .5s infinite}
@keyframes bob{50%{transform:translateY(-10px)}}

/* ---- Marquee -------------------------------------------------------- */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:20px 0;margin-top:34px;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;gap:54px;align-items:center;animation:scroll 28s linear infinite;width:max-content}
.marquee-track span{font-family:var(--font-display);font-weight:600;color:var(--txt-faint);font-size:1.05rem;white-space:nowrap}
.marquee-track span.dot{color:var(--lime)}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---- Section heading ------------------------------------------------ */
.sec{padding:76px 0}
.sec-head{margin-bottom:42px;max-width:660px}
.sec-head .eyebrow{margin-bottom:14px}
.sec-head h2{font-family:var(--font-display);font-weight:700;font-size:clamp(1.9rem,3.6vw,2.7rem);letter-spacing:-.025em;line-height:1.08;color:var(--txt)}
.sec-head p{color:var(--txt-dim);margin-top:14px;font-size:1.06rem}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---- Filter chips --------------------------------------------------- */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.chip{font-family:var(--font-display);font-weight:600;font-size:.86rem;padding:9px 18px;border-radius:999px;
  border:1.5px solid var(--line-2);color:var(--txt-dim);background:#fff;cursor:pointer;transition:all .18s}
.chip:hover{color:var(--txt);border-color:var(--txt-faint);transform:translateY(-2px)}
.chip.active{background:var(--lime);color:#fff;border-color:var(--lime);box-shadow:0 8px 20px -10px rgba(15,169,104,.6)}

/* ---- Course grid + card --------------------------------------------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.course-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s;position:relative;box-shadow:var(--shadow-sm)}
.course-card:hover{transform:translateY(-8px);border-color:transparent;box-shadow:var(--shadow)}
.cc-top{height:120px;position:relative;display:flex;align-items:flex-end;padding:16px;border-bottom:1px solid var(--line);
  background:
    radial-gradient(120px 120px at 85% 20%,rgba(15,169,104,.22),transparent),
    radial-gradient(150px 150px at 12% 95%,rgba(255,194,75,.28),transparent),
    linear-gradient(135deg,#f4efe4,#eae3d4)}
.cc-top .cat-tag{font-family:var(--font-display);font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--lime-deep);background:rgba(255,255,255,.8);padding:5px 11px;border-radius:999px;border:1px solid var(--line)}
.cc-top .ribbon{position:absolute;top:14px;right:14px;font-family:var(--font-display);font-size:.7rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.04em;color:#fff;background:var(--amber);padding:5px 11px;border-radius:999px;box-shadow:0 6px 16px -8px rgba(255,92,53,.7)}
.cc-top .ic{position:absolute;top:14px;left:16px;font-size:1.8rem;color:rgba(22,32,28,.22)}
.cc-body{padding:18px 18px 0;flex:1}
.cc-body h3{font-family:var(--font-display);font-weight:600;font-size:1.13rem;line-height:1.25;margin-bottom:7px;letter-spacing:-.01em}
.cc-body .sub{color:var(--txt-dim);font-size:.9rem;margin-bottom:14px}
.cc-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:.82rem;color:var(--txt-faint);margin-bottom:14px}
.cc-meta span{display:inline-flex;align-items:center;gap:5px}
.cc-meta i{color:var(--txt-dim)}
.stars{color:#e8a317;font-weight:700}
.cc-foot{padding:16px 18px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;margin-top:14px}
.price{font-family:var(--font-display);font-weight:700;font-size:1.22rem;letter-spacing:-.01em}
.price .old{font-size:.85rem;color:var(--txt-faint);text-decoration:line-through;font-weight:400;margin-left:7px}
.batch{font-size:.78rem;color:var(--lime-deep);font-weight:600}

/* ---- How it works (steps) ------------------------------------------ */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;position:relative;box-shadow:var(--shadow-sm);transition:transform .25s}
.step:hover{transform:translateY(-6px)}
.step .n{counter-increment:s;font-family:var(--font-display);font-weight:800;font-size:1rem;width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;background:var(--txt);color:#fff;margin-bottom:16px}
.step .n::before{content:"0" counter(s)}
.step h4{font-family:var(--font-display);font-weight:600;font-size:1.12rem;margin-bottom:8px}
.step p{color:var(--txt-dim);font-size:.93rem}

/* ---- Features ------------------------------------------------------- */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:transform .25s,box-shadow .25s;box-shadow:var(--shadow-sm)}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.feat .fic{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:1.45rem;
  background:rgba(15,169,104,.1);color:var(--lime-deep);margin-bottom:16px}
.feat:nth-child(2n) .fic{background:rgba(255,92,53,.1);color:var(--amber)}
.feat:nth-child(3n) .fic{background:rgba(255,194,75,.18);color:#c98a14}
.feat h4{font-family:var(--font-display);font-weight:600;font-size:1.12rem;margin-bottom:8px}
.feat p{color:var(--txt-dim);font-size:.93rem}

/* ---- Categories ----------------------------------------------------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}
.cat-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px;
  display:flex;align-items:center;gap:14px;transition:all .22s;cursor:pointer;box-shadow:var(--shadow-sm)}
.cat-card:hover{border-color:var(--lime);transform:translateY(-4px);box-shadow:var(--shadow)}
.cat-card .cic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;background:var(--ink-3);color:var(--lime-deep);flex-shrink:0;transition:.22s}
.cat-card:hover .cic{background:var(--lime);color:#fff}
.cat-card h4{font-family:var(--font-display);font-size:1rem;font-weight:600}
.cat-card span span,.cat-card>span>span{font-size:.8rem;color:var(--txt-faint)}

/* ---- CTA band ------------------------------------------------------- */
.cta-band{margin:30px 0;border-radius:32px;padding:60px 44px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--lime-deep),var(--lime));color:#fff;box-shadow:0 30px 70px -30px rgba(15,169,104,.7)}
.cta-band::before{content:"";position:absolute;inset:0;opacity:.5;background:
  radial-gradient(40% 60% at 15% 20%,rgba(255,194,75,.5),transparent),
  radial-gradient(40% 60% at 85% 80%,rgba(255,92,53,.45),transparent)}
.cta-band h2{font-family:var(--font-display);font-weight:700;font-size:clamp(1.8rem,3.6vw,2.7rem);position:relative;letter-spacing:-.02em}
.cta-band p{color:rgba(255,255,255,.9);margin:14px auto 28px;position:relative;max-width:540px}
.cta-band .hero-cta{justify-content:center;margin-bottom:0;position:relative}
.cta-band .btn-primary{background:#fff;color:var(--lime-deep)}
.cta-band .btn-primary:hover{background:var(--txt);color:#fff}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.15);border-color:#fff}

/* ---- Reviews -------------------------------------------------------- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px}
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);position:relative;transition:transform .25s}
.review:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.review .qmark{position:absolute;top:18px;right:22px;font-family:var(--font-display);font-size:3rem;line-height:1;color:rgba(15,169,104,.14)}
.review .stars{margin-bottom:12px;font-size:.95rem}
.review p{color:var(--txt-dim);font-size:.96rem;margin-bottom:18px;position:relative}
.review .who{display:flex;align-items:center;gap:12px}
.review .av{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--lime),var(--violet));display:grid;place-items:center;font-family:var(--font-display);font-weight:700;color:#fff}
.review .who b{font-family:var(--font-display);font-size:.95rem;display:block}
.review .who span{font-size:.8rem;color:var(--txt-faint)}

/* ---- FAQ ------------------------------------------------------------ */
.faq{max-width:780px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s}
.faq details[open]{box-shadow:var(--shadow-sm)}
.faq summary{padding:20px 22px;font-family:var(--font-display);font-weight:600;font-size:1.02rem;cursor:pointer;display:flex;align-items:center;gap:12px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pl{margin-left:auto;font-size:1.3rem;color:var(--lime-deep);transition:transform .25s}
.faq details[open] summary .pl{transform:rotate(45deg)}
.faq .a{padding:0 22px 20px;color:var(--txt-dim);font-size:.95rem}

/* ---- Footer --------------------------------------------------------- */
.site-footer{border-top:1px solid var(--line);padding:60px 0 30px;margin-top:40px;background:var(--ink-2)}
.foot-cta{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:flex;
  align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:46px;box-shadow:var(--shadow-sm)}
.foot-cta h3{font-family:var(--font-display);font-size:1.4rem;letter-spacing:-.01em}
.foot-cta p{color:var(--txt-dim);font-size:.92rem;margin-top:4px}
.foot-news{display:flex;gap:10px;flex-wrap:wrap}
.foot-news input{padding:12px 16px;border-radius:999px;border:1.5px solid var(--line-2);background:#fff;font-family:var(--font-body);min-width:230px}
.foot-news input:focus{outline:none;border-color:var(--lime);box-shadow:var(--ring)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.foot-grid p{color:var(--txt-dim);font-size:.92rem;margin-top:14px;max-width:300px}
.foot-col h5{font-family:var(--font-display);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--txt-faint);margin-bottom:16px}
.foot-col a{display:block;color:var(--txt-dim);font-size:.92rem;margin-bottom:10px;transition:color .15s,transform .15s}
.foot-col a:hover{color:var(--lime-deep);transform:translateX(3px)}
.foot-bottom{border-top:1px solid var(--line);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--txt-faint);font-size:.85rem}
.foot-social{display:flex;gap:12px}
.foot-social a{width:38px;height:38px;border-radius:11px;border:1px solid var(--line-2);display:grid;place-items:center;color:var(--txt-dim);transition:.18s}
.foot-social a:hover{color:#fff;background:var(--lime);border-color:var(--lime);transform:translateY(-3px)}

/* ---- Detail / enroll / learn shared --------------------------------- */
.detail-hero{padding:58px 0 30px;background:var(--ink-2);border-bottom:1px solid var(--line)}
.detail-grid{display:grid;grid-template-columns:1.6fr .9fr;gap:40px;align-items:start}
.breadcrumb{font-size:.85rem;color:var(--txt-faint);margin-bottom:18px}
.breadcrumb a:hover{color:var(--lime-deep)}
.detail-hero h1{font-family:var(--font-display);font-weight:700;font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.08;margin-bottom:14px;letter-spacing:-.02em}
.detail-hero .sub{font-size:1.1rem;color:var(--txt-dim);margin-bottom:20px}
.enroll-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:sticky;top:100px;box-shadow:var(--shadow)}
.enroll-card .price{font-size:2.1rem;margin-bottom:6px}
.enroll-card .save{font-size:.85rem;color:var(--lime-deep);margin-bottom:20px;font-weight:600}
.enroll-card ul{list-style:none;margin:20px 0}
.enroll-card li{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--txt-dim);margin-bottom:11px}
.enroll-card li i{color:var(--lime);margin-top:3px}
.curriculum{margin-top:14px}
.mod{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s}
.mod[open]{box-shadow:var(--shadow-sm)}
.mod summary{padding:18px 20px;font-family:var(--font-display);font-weight:600;cursor:pointer;display:flex;align-items:center;gap:12px;list-style:none}
.mod summary::-webkit-details-marker{display:none}
.mod summary .num{width:30px;height:30px;border-radius:9px;background:rgba(15,169,104,.12);color:var(--lime-deep);display:grid;place-items:center;font-size:.85rem;flex-shrink:0;font-family:var(--font-display);font-weight:700}
.mod summary .chev{margin-left:auto;transition:transform .2s;color:var(--txt-faint)}
.mod[open] summary .chev{transform:rotate(180deg)}
.mod .mod-body{padding:0 20px 18px 62px;color:var(--txt-dim);font-size:.92rem}

/* ---- Forms ---------------------------------------------------------- */
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow-sm)}
.field{margin-bottom:16px}
.field label{display:block;font-size:.85rem;color:var(--txt-dim);margin-bottom:7px;font-weight:600}
.field input,.field select,.field textarea{width:100%;padding:12px 15px;border-radius:12px;border:1.5px solid var(--line-2);
  background:#fff;color:var(--txt);font-family:var(--font-body);font-size:.95rem;transition:border-color .15s,box-shadow .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--lime);box-shadow:var(--ring)}
.alert{padding:13px 16px;border-radius:12px;font-size:.9rem;margin-bottom:18px}
.alert-ok{background:rgba(15,169,104,.1);border:1px solid rgba(15,169,104,.3);color:var(--lime-deep)}
.alert-err{background:rgba(229,72,77,.08);border:1px solid rgba(229,72,77,.3);color:#c5363b}

/* ---- Reveal animation ---------------------------------------------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.zoom{transform:scale(.94)}
.reveal.zoom.in{transform:none}

/* ---- Responsive ----------------------------------------------------- */
@media(max-width:1024px){
  .sec{padding:64px 0}
  .hero{padding:56px 0 46px}
  .hero-grid{gap:40px}
  .bento{grid-template-columns:1fr 1fr}
}
@media(max-width:920px){
  .hero-grid,.detail-grid{grid-template-columns:1fr}
  .hero-visual{order:-1;margin-bottom:18px;max-width:520px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .enroll-card{position:static}
}
@media(max-width:680px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;
    background:#fff;padding:20px 24px;border-bottom:1px solid var(--line);gap:16px;box-shadow:var(--shadow)}
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .foot-cta{flex-direction:column;align-items:flex-start}
  .sec{padding:52px 0}
  .sec-head{margin-bottom:30px}
  .grid{grid-template-columns:1fr;gap:18px}
  .cta-band{padding:44px 24px;border-radius:24px}
  .topbar-announce{font-size:.76rem;padding:8px 12px}
  .marquee-track span{font-size:.92rem}
  .wrap{padding:0 18px}
  .float-chip.fc2{display:none}
  .float-chip.fc1{right:2%;top:-10px}
}
@media(max-width:480px){
  .hero{padding:40px 0 36px}
  .hero h1{font-size:clamp(2rem,8vw,2.6rem)}
  .hero p.lead{font-size:1.02rem}
  .hero-cta{gap:10px}
  .hero-cta .btn{flex:1;justify-content:center}
  .bento{grid-template-columns:1fr}
  .bento .b-lg{grid-column:auto}
  .hero-stats .stat b{font-size:1.5rem}
  .form-card{padding:22px}
  .cta-band h2{font-size:1.6rem}
  .step,.feat{padding:22px}
  .detail-hero{padding:42px 0 24px}
  .brand-logo{height:34px}
  .site-footer .brand-logo{height:40px}
}
@media(max-width:380px){
  .brand span:last-child{font-size:.98rem}
  .nav-right .btn-ghost{display:none}
  .nav{gap:10px}
  .brand-logo{height:30px;max-width:150px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .b-progress span{width:78%}
}