/* ============ TOKENS ============ */
:root {
  --indigo: #4f46e5;
  --indigo-600: #4338ca;
  --indigo-50: #eef2ff;
  --violet: #7c3aed;
  --amber: #f59e0b;
  --ink: #0f172a;
  --slate: #475569;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --white: #fff;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.04);
  --shadow: 0 10px 30px -12px rgba(15,23,42,.18);
  --shadow-lg: 0 30px 60px -20px rgba(79,70,229,.35);
  --maxw: 1140px;
  --grad: linear-gradient(120deg, #4f46e5, #7c3aed 55%, #ec4899);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 760px; }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 700; font-size: 15px;
  padding: 11px 20px; border-radius: 999px; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap; font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--indigo); color: var(--white); box-shadow: 0 8px 20px -8px rgba(79,70,229,.6); }
.btn-primary:hover { background: var(--indigo-600); box-shadow: 0 12px 26px -8px rgba(79,70,229,.7); }
.btn-outline { background: transparent; color: var(--indigo); border-color: var(--indigo); }
.btn-outline:hover { background: var(--indigo-50); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { color: var(--indigo); }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }

/* ============ HEADER ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 24px; height: 70px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; }
.brand-mark {
  width: 34px; height: 34px; display: grid; place-items: center;
  background: var(--grad); color: #fff; border-radius: 10px; font-weight: 800;
}
.brand-name span { color: var(--indigo); }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { font-weight: 600; font-size: 15px; color: var(--slate); transition: color .2s; }
.nav-links a:hover { color: var(--indigo); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--grad); border-radius: 2px; transition: .25s; }

/* ============ HERO ============ */
.hero { position: relative; overflow: hidden; background: radial-gradient(1200px 500px at 80% -10%, var(--indigo-50), transparent 60%); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding: 72px 24px 80px; }
.pill {
  display: inline-block; background: var(--indigo-50); color: var(--indigo-600);
  font-weight: 700; font-size: 13.5px; padding: 7px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.05; font-weight: 800; letter-spacing: -1.5px; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 18px; color: var(--slate); margin: 22px 0 30px; max-width: 540px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { display: flex; align-items: center; gap: 14px; margin-top: 34px; }
.avatars { display: flex; }
.avatars span {
  width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  font-size: 12px; font-weight: 700; color: #fff; border: 2.5px solid #fff; margin-left: -10px;
  background: var(--violet);
}
.avatars span:first-child { margin-left: 0; }
.avatars span:nth-child(2){background:#0ea5e9}.avatars span:nth-child(3){background:#f59e0b}.avatars span:nth-child(4){background:#ec4899}.avatars span:nth-child(5){background:var(--indigo)}
.hero-trust p { font-size: 14.5px; color: var(--muted); }
.hero-trust strong { color: var(--ink); }

/* hero card */
.hero-card-wrap { position: relative; }
.hero-card {
  position: relative; z-index: 2; background: #fff; border: 1px solid var(--line);
  border-radius: 20px; padding: 26px; box-shadow: var(--shadow-lg);
}
.floating { animation: float 6s ease-in-out infinite; }
@keyframes float { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-12px) } }
.hc-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.hc-tag.live { color: #dc2626; font-weight: 700; font-size: 13px; }
.hc-seats { font-size: 13px; font-weight: 600; color: var(--amber); background: #fff7ed; padding: 4px 10px; border-radius: 999px; }
.hero-card h3 { font-size: 22px; line-height: 1.25; }
.hc-mentor { color: var(--muted); font-size: 14px; margin: 6px 0 16px; }
.hc-meta { display: grid; gap: 8px; margin-bottom: 18px; }
.hc-meta li { font-size: 14.5px; color: var(--slate); }
.hc-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); padding-top: 16px; }
.hc-foot strong { font-size: 20px; color: var(--indigo); }
.strike { text-decoration: line-through; color: var(--muted); font-size: 14px; margin-right: 4px; }
.blob { position: absolute; border-radius: 50%; filter: blur(40px); opacity: .5; z-index: 1; }
.blob-1 { width: 240px; height: 240px; background: #c7d2fe; top: -40px; right: -30px; }
.blob-2 { width: 200px; height: 200px; background: #fbcfe8; bottom: -50px; left: -20px; }

/* ============ STATS ============ */
.stats { background: var(--ink); color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; padding: 40px 24px; }
.stat { text-align: center; }
.stat strong { display: block; font-size: clamp(28px, 4vw, 40px); font-weight: 800; background: linear-gradient(120deg,#a5b4fc,#f0abfc); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat span { font-size: 14px; color: #cbd5e1; }

/* ============ SECTIONS ============ */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.eyebrow { color: var(--indigo); font-weight: 700; font-size: 13.5px; letter-spacing: .08em; text-transform: uppercase; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -1px; margin: 12px 0 14px; }
.section-head p { color: var(--slate); font-size: 17px; }

/* ============ KATEGORI ============ */
.cat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.cat-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.cat-ico { font-size: 32px; width: 60px; height: 60px; display: grid; place-items: center; background: var(--indigo-50); border-radius: 14px; margin-bottom: 16px; }
.cat-card h3 { font-size: 19px; margin-bottom: 6px; }
.cat-card p { color: var(--muted); font-size: 14.5px; }
.cat-count { display: inline-block; margin-top: 14px; font-weight: 700; font-size: 13px; color: var(--indigo); }

/* ============ KELAS ============ */
.class-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.class-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform .2s, box-shadow .2s; display: flex; flex-direction: column; }
.class-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.cc-thumb { height: 150px; position: relative; }
.thumb-1{background:linear-gradient(135deg,#4f46e5,#7c3aed)}.thumb-2{background:linear-gradient(135deg,#0ea5e9,#2563eb)}.thumb-3{background:linear-gradient(135deg,#f59e0b,#ef4444)}.thumb-4{background:linear-gradient(135deg,#ec4899,#8b5cf6)}.thumb-5{background:linear-gradient(135deg,#10b981,#059669)}.thumb-6{background:linear-gradient(135deg,#6366f1,#06b6d4)}
.cc-badge { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,.95); color: var(--ink); font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; }
.cc-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.cc-tags { display: flex; gap: 8px; margin-bottom: 10px; }
.cc-tags span { font-size: 12px; font-weight: 600; color: var(--indigo-600); background: var(--indigo-50); padding: 3px 10px; border-radius: 999px; }
.cc-body h3 { font-size: 18px; line-height: 1.3; }
.cc-body > p { color: var(--muted); font-size: 14px; margin: 8px 0 12px; }
.cc-meta { display: flex; gap: 6px; font-size: 13.5px; color: var(--slate); margin-bottom: 16px; flex-wrap: wrap; }
.cc-foot { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.price { font-weight: 800; color: var(--indigo); font-size: 16px; }

/* ============ STEPS ============ */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.step { text-align: center; padding: 28px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); position: relative; }
.step-num { width: 46px; height: 46px; display: grid; place-items: center; margin: 0 auto 16px; background: var(--grad); color: #fff; font-weight: 800; font-size: 18px; border-radius: 50%; }
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }

/* ============ FEAT ============ */
.feat-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.feat-copy h2 { font-size: clamp(26px,3.5vw,36px); font-weight: 800; letter-spacing: -1px; margin: 12px 0 16px; }
.feat-copy p { color: var(--slate); font-size: 17px; margin-bottom: 24px; }
.feat-list { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.feat-list li { display: flex; gap: 14px; }
.feat-list span { font-size: 22px; line-height: 1; }
.feat-list strong { display: block; font-size: 16px; margin-bottom: 2px; }
.feat-list p { color: var(--muted); font-size: 14px; }

/* ============ MENTOR ============ */
.mentor-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
.mentor-card { text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 18px; transition: transform .2s, box-shadow .2s; }
.mentor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.m-ava { width: 84px; height: 84px; border-radius: 50%; margin: 0 auto 16px; display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 26px; }
.ava-1{background:linear-gradient(135deg,#4f46e5,#7c3aed)}.ava-2{background:linear-gradient(135deg,#0ea5e9,#2563eb)}.ava-3{background:linear-gradient(135deg,#f59e0b,#ef4444)}.ava-4{background:linear-gradient(135deg,#ec4899,#8b5cf6)}
.mentor-card h3 { font-size: 17px; }
.mentor-card p { color: var(--indigo); font-weight: 600; font-size: 14px; }
.mentor-card span { color: var(--muted); font-size: 13px; }

/* ============ TESTI ============ */
.testi-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.testi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.testi p { font-size: 15.5px; color: var(--ink); margin-bottom: 20px; }
.testi footer { display: flex; align-items: center; gap: 12px; }
.t-ava { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 14px; }
.testi small { color: var(--muted); display: block; }

/* ============ HARGA ============ */
.price-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; align-items: start; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 28px; position: relative; }
.price-card.featured { border: 2px solid var(--indigo); box-shadow: var(--shadow-lg); transform: scale(1.03); }
.price-flag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--grad); color: #fff; font-size: 12.5px; font-weight: 700; padding: 6px 16px; border-radius: 999px; }
.price-card h3 { font-size: 19px; }
.price-amt { font-size: 34px; font-weight: 800; color: var(--ink); margin: 14px 0 6px; }
.price-amt span { font-size: 15px; font-weight: 600; color: var(--muted); }
.price-desc { color: var(--muted); font-size: 14.5px; margin-bottom: 20px; }
.price-card ul { display: grid; gap: 11px; margin-bottom: 26px; }
.price-card li { font-size: 14.5px; color: var(--slate); }

/* ============ FAQ ============ */
.faq { display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 4px 20px; }
.faq summary { font-weight: 700; font-size: 16px; padding: 16px 0; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 24px; color: var(--indigo); font-weight: 400; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--slate); font-size: 15px; padding: 0 0 18px; }

/* ============ CTA ============ */
.cta { padding: 84px 0; background: var(--grad); }
.cta-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.cta-copy h2 { color: #fff; font-size: clamp(28px,4vw,42px); font-weight: 800; letter-spacing: -1px; }
.cta-copy p { color: rgba(255,255,255,.9); font-size: 17px; margin: 14px 0 22px; }
.cta-points { display: grid; gap: 10px; }
.cta-points li { color: #fff; font-weight: 600; }
.cta-form { background: #fff; border-radius: 20px; padding: 30px; box-shadow: var(--shadow-lg); display: grid; gap: 16px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 14px; font-weight: 600; color: var(--slate); }
.field input, .field select {
  font-family: inherit; font-size: 15px; padding: 12px 14px; border: 1.5px solid var(--line);
  border-radius: var(--radius-sm); transition: border-color .2s, box-shadow .2s; color: var(--ink);
}
.field input:focus, .field select:focus { outline: none; border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-50); }
.form-note { font-size: 14px; text-align: center; min-height: 1em; }
.form-note.ok { color: #059669; }
.form-note.err { color: #dc2626; }

/* ============ FOOTER ============ */
.site-footer { background: var(--ink); color: #cbd5e1; padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .brand { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 14.5px; max-width: 320px; margin-bottom: 18px; }
.socials { display: flex; gap: 10px; }
.socials a { width: 38px; height: 38px; display: grid; place-items: center; background: rgba(255,255,255,.08); border-radius: 10px; font-weight: 700; font-size: 13px; color: #fff; transition: background .2s; }
.socials a:hover { background: var(--indigo); }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14.5px; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; font-size: 13.5px; }
.footer-bottom a:hover { color: #fff; }

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .hero-grid, .feat-grid, .cta-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-card-wrap { max-width: 440px; }
  .cat-grid, .class-grid, .testi-grid { grid-template-columns: repeat(2,1fr); }
  .steps, .mentor-grid { grid-template-columns: repeat(2,1fr); }
  .price-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .price-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 30px; }
}
@media (max-width: 720px) {
  .nav-links, .nav-actions { display: none; }
  .nav-toggle { display: flex; }
  .site-header.open .nav-links {
    display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 16px 24px; gap: 4px;
  }
  .site-header.open .nav-links a { padding: 10px 0; }
  .cat-grid, .class-grid, .testi-grid, .feat-list { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}
@media (prefers-reduced-motion: reduce) { .floating { animation: none; } * { scroll-behavior: auto; } }