:root {
  --bg: #0e0e0e;
  --card: #1a1a1a;
  --line: #2a2a2a;
  --accent: #e53a2b;
  --accent-ink: #ff6a5c;
  --text: #f5f5f5;
  --text-2: #b8b8b8;
  --wa: #25d366;
  --radius: 14px;
  --wrap: 1120px;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-disp: 'Archivo', 'Arial Black', system-ui, sans-serif;
  --font-hand: 'Caveat', 'Segoe Script', cursive;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--accent-ink); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--text); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }

/* Huruf */
.disp {
  font-family: var(--font-disp);
  font-stretch: 125%;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1.05;
  margin: 0 0 0.5em;
  overflow-wrap: anywhere;
}
h1.disp { font-size: clamp(1.9rem, 7.5vw, 4rem); }
h2.disp { font-size: clamp(1.5rem, 5.5vw, 2.6rem); }
h3 { font-size: 1.05rem; font-weight: 700; margin: 0 0 0.35em; }
.accent { color: var(--accent); }
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 0.9em;
}
.lead { color: var(--text-2); font-size: 1.05rem; max-width: 40em; }
.muted { color: var(--text-2); }
.signature { font-family: var(--font-hand); font-weight: 500; font-size: 1.6rem; color: var(--accent-ink); margin: 0.2em 0 0; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(14, 14, 14, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.logo { text-decoration: none; display: inline-flex; flex-direction: column; }
.logo span { font-family: var(--font-disp); font-stretch: 125%; font-weight: 900; text-transform: uppercase; font-size: 1.1rem; letter-spacing: 0.02em; }
.logo::after { content: ''; width: 48px; height: 3px; background: var(--accent); border-radius: 2px; margin-top: 3px; }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { text-decoration: none; color: var(--text-2); font-weight: 500; font-size: 0.95rem; padding: 10px 0; }
.nav a:hover { color: var(--text); }
.nav-toggle {
  display: none; background: none; border: 0; color: var(--text);
  width: 44px; height: 44px; border-radius: 10px; cursor: pointer; align-items: center; justify-content: center;
}
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: absolute; left: 0; right: 0; top: 64px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px; display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
}

/* Tombol */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 24px; border-radius: 12px; border: 0;
  font: 700 1rem/1 var(--font-body); text-decoration: none; cursor: pointer;
  transition: transform 0.15s ease, background-color 0.2s ease;
}
.btn:active { transform: scale(0.98); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #c92e20; }
.btn-light { background: var(--text); color: var(--bg); }
.btn-light:hover { background: #fff; }
.btn-wa { background: var(--wa); color: #06210f; }
.btn-wa:hover { background: #1fbe5a; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.5em; }
@media (max-width: 520px) { .btn-row .btn { width: 100%; } }

/* Bagian */
.section { padding: 72px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 46em; margin-bottom: 32px; }
@media (max-width: 640px) { .section { padding: 56px 0; } }

/* Pembuka */
.hero { padding: 40px 0 64px; }
.hero-grid { display: grid; gap: 32px; align-items: center; }
.hero-media img { border-radius: 20px; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 30%; }
@media (min-width: 900px) { .hero-media img { max-height: 640px; } }
@media (min-width: 900px) { .hero-grid { grid-template-columns: 1.1fr 0.9fr; } .hero { padding: 72px 0 88px; } }

/* Kartu */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p:last-child { margin-bottom: 0; }
.icon { width: 28px; height: 28px; color: var(--accent); margin-bottom: 12px; }
.grid-2 { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: 14px; }
@media (min-width: 760px) { .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 960px) { .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 420px) { .grid-2 .card { padding: 16px; } }

/* Masalah */
.pain-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.pain-list li { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--accent); padding: 16px 18px; border-radius: 0 12px 12px 0; }

/* Cerita */
.split { display: grid; gap: 32px; align-items: center; }
.split img { border-radius: 20px; width: 100%; object-fit: cover; }
@media (min-width: 900px) { .split { grid-template-columns: 0.9fr 1.1fr; } .split.reverse > :first-child { order: 2; } }
.quote { font-size: 1.15rem; border-left: 4px solid var(--accent); padding-left: 16px; margin: 1.2em 0; }

.before-after { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.before-after figure { margin: 0; position: relative; }
.before-after img { border-radius: 16px; aspect-ratio: 3 / 4; object-fit: cover; }
.before-after figcaption {
  position: absolute; left: 10px; bottom: 10px; padding: 6px 12px; border-radius: 999px;
  background: rgba(14, 14, 14, 0.85); font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.before-after figcaption.now { background: var(--accent); color: #fff; }

/* Sertifikasi */
.cred { display: grid; gap: 14px; margin-top: 14px; align-items: stretch; }
@media (min-width: 760px) { .cred { grid-template-columns: 0.8fr 1.2fr; } }
.cred-photo { margin: 0; position: relative; }
.cred-photo img { border-radius: var(--radius); width: 100%; height: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.cred-photo figcaption {
  position: absolute; left: 10px; right: 10px; bottom: 10px; padding: 8px 12px; border-radius: 10px;
  background: rgba(14, 14, 14, 0.85); font-size: 0.85rem; font-weight: 500;
}
.cred-title { font-size: 1.25rem; }
.cred-cert { border-radius: 10px; width: 100%; aspect-ratio: 3 / 2; object-fit: cover; margin-top: 8px; }

/* Cara kerja */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
@media (min-width: 760px) { .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.steps li { counter-increment: step; }
.steps li::before {
  content: counter(step); display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%; background: var(--accent); color: #fff;
  font-family: var(--font-disp); font-weight: 900; margin-bottom: 14px;
}

/* Kalkulator teaser */
.calc-teaser { border: 1px solid var(--accent); }
.big-num { font-family: var(--font-disp); font-stretch: 125%; font-weight: 900; font-size: clamp(2.2rem, 9vw, 3.4rem); line-height: 1; margin: 0.15em 0; }
.big-num small { font-family: var(--font-body); font-stretch: 100%; font-size: 1rem; font-weight: 500; color: var(--text-2); }

/* Galeri */
.gallery { display: grid; gap: 10px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 760px) { .gallery { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.gallery img { border-radius: 12px; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.video-box { margin-top: 14px; }
.video-box video { border-radius: 14px; width: 100%; max-width: 380px; margin: 0 auto; aspect-ratio: 464 / 832; background: #000; }

/* Lokasi */
.gym-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
@media (min-width: 760px) { .gym-list { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.gym-list a { color: var(--accent-ink); font-weight: 500; }

/* FAQ */
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 52px 18px 18px; font-weight: 700; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); font-size: 1.4rem; color: var(--accent-ink); }
.faq details[open] summary::after { content: '−'; }
.faq details p { padding: 0 18px 18px; margin: 0; color: var(--text-2); }

/* Penutup */
.cta-final { text-align: center; }
.cta-final .lead { margin: 0 auto; }
.cta-final .btn-row { justify-content: center; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0 96px; color: var(--text-2); font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; }
.site-footer a { color: var(--text-2); }

/* Tombol WhatsApp melayang */
.wa-float {
  position: fixed; right: 16px; bottom: 16px; z-index: 30;
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--wa); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
}
.wa-float svg { width: 30px; height: 30px; }

/* Formulir (kalkulator) */
.field { margin-bottom: 20px; }
.field > label, .field > legend { display: block; font-weight: 700; margin-bottom: 8px; }
fieldset { border: 0; padding: 0; margin: 0 0 20px; min-width: 0; }
.input {
  width: 100%; min-height: 52px; padding: 0 16px; border-radius: 12px;
  border: 1px solid #3a3a3a; background: #121212; color: var(--text);
  font: 500 1.05rem var(--font-body);
}
.input:focus { border-color: var(--accent-ink); outline: none; box-shadow: 0 0 0 3px rgba(229, 58, 43, 0.35); }
.input[aria-invalid='true'] { border-color: var(--accent-ink); }
.input-row { display: grid; gap: 14px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 520px) { .input-row { grid-template-columns: 1fr; } }
.unit { color: var(--text-2); font-weight: 500; font-size: 0.85rem; }
.error { color: var(--accent-ink); font-size: 0.9rem; margin: 6px 0 0; min-height: 0; }
.error:empty { display: none; }
.chips { display: grid; gap: 10px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.chips.stack { grid-template-columns: 1fr; }
@media (min-width: 640px) { .chips.three { grid-template-columns: repeat(3, minmax(0, 1fr)); } .chips.stack { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.chip span {
  display: block; min-height: 52px; padding: 14px 16px; border-radius: 12px;
  border: 1px solid #3a3a3a; background: #121212; cursor: pointer; font-weight: 700;
}
.chip small { display: block; font-weight: 400; color: var(--text-2); font-size: 0.85rem; margin-top: 2px; }
.chip input:checked + span { border-color: var(--accent); background: rgba(229, 58, 43, 0.14); }
.chip input:focus-visible + span { outline: 3px solid var(--accent-ink); outline-offset: 2px; }
.result { margin-top: 24px; }
.disclaimer { font-size: 0.85rem; color: var(--text-2); margin-top: 14px; }

/* Artikel */
.article { max-width: 720px; margin: 0 auto; }
.article h1 { font-size: clamp(1.7rem, 6vw, 2.6rem); }
.article .meta { color: var(--text-2); font-size: 0.9rem; margin-bottom: 1.5em; }
.article .cover { border-radius: 16px; margin-bottom: 2em; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.prose { font-size: 1.06rem; }
.prose h2 { font-size: 1.4rem; margin: 1.8em 0 0.6em; line-height: 1.3; }
.prose h3 { font-size: 1.15rem; margin: 1.5em 0 0.5em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1em; }
.prose li { margin-bottom: 0.4em; }
.prose a { color: var(--accent-ink); }
.prose blockquote { border-left: 4px solid var(--accent); margin: 1.2em 0; padding-left: 16px; color: var(--text-2); }
.article-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.article-list a { text-decoration: none; display: block; }
.article-list a:hover h2 { color: var(--accent-ink); }
.article-list h2 { font-size: 1.2rem; margin: 0 0 0.3em; line-height: 1.3; }
.cta-box { margin-top: 3em; border: 1px solid var(--accent); }

/* Muncul saat digulir */
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn { transition: none; }
}