/* ==========================================================================
   BLACK BELT RESEARCH — MASTERCLASS
   Editorial. Clean. Dojo-meets-journal.
   ========================================================================== */

:root {
  --bg: #0A0A09;
  --bg-alt: #121210;
  --ink: #F8F5EC;
  --ink-soft: #CFCCC0;
  --muted: #8A8678;
  --line: rgba(248, 245, 236, 0.12);
  --line-strong: rgba(248, 245, 236, 0.4);
  --gold: #C9A961;
  --gold-soft: #DFC07A;
  --green: #8CC63F;
  --green-soft: #A4D75C;
  --paper: #141412;
  --paper-2: #1A1A17;
  --white: #FFFFFF;

  --serif: "Fraunces", Georgia, serif;
  --sans:  "Geist", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --mono:  "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --maxw: 1180px;
  --pad-x: clamp(20px, 4vw, 64px);

  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 450;
  font-size: 16.5px;
  line-height: 1.58;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
em { font-family: var(--serif); font-style: italic; font-weight: 500; letter-spacing: 0; }
strong { font-weight: 600; }

/* subtle grain — global (screen blend for dark theme) */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2' seed='7'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.16 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: screen;
  opacity: .4;
  z-index: 1000;
}

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* =================================================================
   NAV — floating white pill over dark bg
   ================================================================= */
.nav {
  position: sticky; top: 0; z-index: 50;
  padding: 22px var(--pad-x) 0;
  pointer-events: none;
}
.nav__pill {
  pointer-events: auto;
  max-width: calc(var(--maxw) - 20px);
  margin: 0 auto;
  background: #FFFFFF;
  border-radius: 999px;
  padding: 14px 14px 14px 34px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  box-shadow:
    0 24px 60px -28px rgba(0,0,0,.75),
    0 0 0 1px rgba(0,0,0,.06);
}
.nav__brand {
  display: inline-flex; align-items: center;
  height: 40px;
}
.nav__logo {
  height: 34px;
  width: auto;
  display: block;
}
.nav__links {
  display: flex; gap: 48px;
  justify-content: center;
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.25;
  color: #0A0A09;
  letter-spacing: -0.005em;
  text-align: center;
}
.nav__links a { transition: opacity .2s; }
.nav__links a:hover { opacity: .55; }

.nav__cta {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px;
  text-align: left;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.25;
  color: #0A0A09;
  padding: 12px 22px;
  border: 1.5px solid #0A0A09;
  border-radius: 999px;
  transition:
    background .28s var(--ease),
    color .28s var(--ease),
    border-color .28s var(--ease),
    transform .28s var(--ease),
    box-shadow .28s var(--ease);
}
.nav__cta-ico {
  flex: none;
  transition: transform .35s var(--ease);
}
.nav__cta:hover,
.nav__cta:focus-visible {
  background: #25D366;
  color: #FFFFFF;
  border-color: #25D366;
  transform: translateY(-1px);
  box-shadow: 0 14px 30px -12px rgba(37, 211, 102, 0.55);
  outline: none;
}
.nav__cta:hover .nav__cta-ico { transform: scale(1.08) rotate(-6deg); }
.nav__cta:active {
  background: #1FB955;
  border-color: #1FB955;
}

/* =================================================================
   BUTTONS
   ================================================================= */
.btn {
  --bh: 52px;
  display: inline-flex; align-items: center; gap: 10px;
  height: var(--bh);
  padding: 0 26px;
  border-radius: 999px;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s var(--ease), background .2s, color .2s, border-color .2s, box-shadow .25s;
  white-space: nowrap;
}
.btn svg { transition: transform .3s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn--primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: 0 14px 40px -18px rgba(14,14,12,.6), inset 0 0 0 1px rgba(255,255,255,.03);
}
.btn--primary:hover { background: #000; transform: translateY(-2px); }

.btn--ghost {
  --bh: 40px;
  padding: 0 18px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
  font-size: 13.5px;
}
.btn--ghost:hover { background: var(--ink); color: var(--paper); }

.btn--gold {
  --bh: 58px;
  background: var(--gold);
  color: #0B0A08;
  font-weight: 600;
  font-size: 16px;
  padding: 0 32px;
  box-shadow: 0 18px 60px -20px rgba(184,137,60,.55);
}
.btn--gold:hover { background: var(--gold-soft); transform: translateY(-2px); }

.btn--ig {
  --bh: 58px;
  background: transparent;
  color: var(--ink);
  font-weight: 600;
  font-size: 15.5px;
  padding: 0 30px;
  border: 1.5px solid rgba(255,255,255,.3);
}
.btn--ig:hover {
  background: var(--ink);
  color: #0A0A09;
  border-color: var(--ink);
  transform: translateY(-2px);
}
.btn--ig:hover svg { transform: rotate(-6deg); }

/* ---------- HERO CTA — oversized, magnetic ---------- */
.btn--hero {
  --bh: 72px;
  position: relative;
  padding: 0 10px 0 36px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 999px;
  box-shadow:
    0 30px 70px -24px rgba(14,14,12,.55),
    0 0 0 1px rgba(14,14,12,.04),
    inset 0 0 0 1px rgba(255,255,255,.04);
  overflow: hidden;
  isolation: isolate;
}
.btn--hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(80% 120% at 50% 120%, rgba(184,137,60,.55), transparent 60%);
  opacity: 0;
  transition: opacity .4s var(--ease);
  z-index: -1;
}
.btn--hero:hover::before { opacity: 1; }
.btn--hero .btn__label { position: relative; z-index: 1; padding-right: 6px; }
.btn--hero .btn__arrow {
  position: relative;
  z-index: 1;
  width: 52px; height: 52px;
  border-radius: 999px;
  background: var(--gold);
  color: #0B0A08;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .4s var(--ease), background .3s;
  margin-left: 14px;
}
.btn--hero:hover {
  transform: translateY(-3px);
}
.btn--hero:hover .btn__arrow {
  transform: translateX(4px) rotate(-8deg);
  background: var(--gold-soft);
}
.btn--hero:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 6px;
}

/* gentle ambient pulse that draws the eye */
@keyframes heroPulse {
  0%, 100% { box-shadow: 0 30px 70px -24px rgba(14,14,12,.55), 0 0 0 0 rgba(184,137,60,.32), inset 0 0 0 1px rgba(255,255,255,.04); }
  50%      { box-shadow: 0 30px 70px -24px rgba(14,14,12,.55), 0 0 0 14px rgba(184,137,60,0), inset 0 0 0 1px rgba(255,255,255,.04); }
}
.btn--hero { animation: heroPulse 3.6s var(--ease) infinite; }

/* ---------- redirect steps strip ---------- */
.hero__redirect {
  margin: 0;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px 16px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero__redirect-step {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}
.hero__redirect-step em {
  font-family: var(--serif);
  font-style: italic;
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 0;
}
.hero__redirect-arrow {
  color: var(--line-strong);
  font-size: 14px;
}
@media (max-width: 640px) {
  .hero__redirect { gap: 10px 12px; font-size: 10.5px; }
  .hero__redirect-step em { font-size: 13px; }
}

.nav__cta { font-weight: 500; }

/* =================================================================
   HERO — dark, bold, DNA helix right
   ================================================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: 140px 0 clamp(60px, 9vw, 120px);
  margin-top: -95px; /* pull content up so nav pill floats on top */
}
.hero__glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 90% 40%, rgba(248,245,236,0.04), transparent 60%),
    radial-gradient(700px 500px at 10% 100%, rgba(201,169,97,0.06), transparent 60%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}

.hero__copy {
  position: relative;
  z-index: 2;
}

.hero__title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(48px, 7.4vw, 112px);
  line-height: 1;
  letter-spacing: -0.035em;
  margin: 0 auto 28px;
  color: var(--ink);
  max-width: 12ch;
  text-align: center;
}

.hero__lede {
  max-width: 54ch;
  font-size: clamp(16px, 1.35vw, 19px);
  font-weight: 450;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 0 40px;
}
.hero__lede strong { color: var(--ink); font-weight: 600; }

.hero__cta-wrap {
  margin-bottom: 34px;
}

.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 22px 34px;
  background: #FFFFFF;
  color: #0A0A09;
  font-family: var(--sans);
  font-size: clamp(16px, 1.25vw, 18px);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: 999px;
  box-shadow:
    0 30px 70px -24px rgba(255,255,255,.25),
    0 0 0 1px rgba(255,255,255,.06);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .25s;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.btn-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(110deg, transparent 40%, rgba(201,169,97,.28) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform .8s var(--ease);
  z-index: -1;
}
.btn-hero:hover {
  transform: translateY(-3px);
  box-shadow:
    0 34px 80px -24px rgba(255,255,255,.35),
    0 0 0 1px rgba(255,255,255,.1);
}
.btn-hero:hover::before { transform: translateX(100%); }
.btn-hero svg {
  transition: transform .4s var(--ease);
}
.btn-hero:hover svg { transform: translateX(4px); }

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 30px 70px -24px rgba(255,255,255,.25), 0 0 0 0 rgba(255,255,255,.18), 0 0 0 1px rgba(255,255,255,.06); }
  50%      { box-shadow: 0 30px 70px -24px rgba(255,255,255,.25), 0 0 0 14px rgba(255,255,255,0),   0 0 0 1px rgba(255,255,255,.06); }
}
.btn-hero { animation: btnPulse 3.2s var(--ease) infinite; }

.hero__info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-soft);
}
.hero__info li {
  display: inline-flex; align-items: center; gap: 12px;
}
.hero__info strong { color: var(--ink); font-weight: 600; }
.hero__info-ico {
  width: 30px; height: 30px;
  border-radius: 999px;
  border: 1.5px solid var(--gold);
  color: var(--gold);
  display: inline-flex;
  align-items: center; justify-content: center;
  flex: none;
}
.hero__info-ico--clock {
  background: transparent;
}

/* DNA × Faixa Preta brand mark */
.hero__dna {
  position: relative;
  justify-self: end;
  display: flex;
  align-items: center;
  justify-content: center;
  height: clamp(440px, 58vw, 660px);
  width: 100%;
}
.hero__dna img {
  width: auto;
  height: 100%;
  max-width: 100%;
  object-fit: contain;
  filter:
    invert(1)
    brightness(1.05)
    drop-shadow(0 30px 60px rgba(0,0,0,.55))
    drop-shadow(0 0 40px rgba(255,255,255,.06));
  animation: dnaFloat 7s var(--ease) infinite;
}
@keyframes dnaFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* =================================================================
   SECTIONS — shared
   ================================================================= */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(80px, 10vw, 140px) var(--pad-x);
}
.section__head { margin-bottom: clamp(40px, 5vw, 72px); }
.section__head--center { text-align: center; }
.section__kicker {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 22px;
}
.section__kicker span {
  color: var(--gold);
  margin-right: 4px;
  font-weight: 600;
}
.section__title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(38px, 5.6vw, 78px);
  line-height: 1;
  letter-spacing: -0.032em;
  margin: 0;
  max-width: 16ch;
  color: var(--ink);
}
.section__title em {
  color: var(--gold);
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
}
.section__title--center {
  margin-left: auto; margin-right: auto;
  max-width: 100%;
}

/* =================================================================
   LEARN SECTION (01) — Interactive Belt Progression
   ================================================================= */
.section--learn { padding-bottom: clamp(70px, 9vw, 130px); }

.section__sub {
  margin: 22px 0 0;
  max-width: 52ch;
  font-size: 16px;
  font-weight: 450;
  line-height: 1.58;
  color: var(--muted);
}
.section__sub em { color: var(--gold); font-family: var(--serif); font-style: italic; font-weight: 500; }

/* invisible sensor used to detect when tracker enters sticky/pinned state */
.tracker-sensor { height: 1px; width: 100%; margin: 0; pointer-events: none; }

/* ---------- Tracker Widget (sticky while within learn section) ---------- */
.tracker {
  --belt-color: #0E0E0C;
  --belt-ink: #F5F2EC;
  position: sticky;
  top: 112px;
  z-index: 40;
  margin: 44px 0 40px;
  padding: 24px 28px 20px;
  background: rgba(20, 20, 18, 0.78);
  backdrop-filter: saturate(1.2) blur(18px);
  -webkit-backdrop-filter: saturate(1.2) blur(18px);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow:
    0 30px 80px -36px rgba(0,0,0,.8),
    inset 0 0 0 1px rgba(255,255,255,.04);
  overflow: hidden;
  transition: padding .45s var(--ease), box-shadow .45s var(--ease), border-color .45s;
}
/* refined look while pinned */
.tracker.is-pinned {
  padding: 18px 28px 16px;
  background: rgba(10, 10, 9, 0.92);
  box-shadow:
    0 22px 60px -22px rgba(0,0,0,.85),
    0 1px 0 rgba(255,255,255,.05),
    inset 0 0 0 1px rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.18);
}
.tracker.is-pinned .tracker__head { margin-bottom: 14px; }
.tracker.is-pinned .tracker__belt { height: 44px; }
.tracker.is-pinned .tracker__rank { font-size: clamp(22px, 2.4vw, 30px); }
.tracker.is-pinned .tracker__progress-num { font-size: 34px; }
.tracker.is-pinned .tracker__axis { display: none; }
.tracker::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(700px 300px at 20% 0%, rgba(184,137,60,.06), transparent 60%);
  pointer-events: none;
}
.tracker__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  position: relative;
}
.tracker__meta {
  display: flex; flex-direction: column;
  gap: 4px;
  min-width: 0;
}
.tracker__rank {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--ink);
  transition: color .5s var(--ease);
}
.tracker__label {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color .4s;
}
.tracker__progress {
  display: inline-flex; align-items: baseline;
  font-family: var(--sans);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  white-space: nowrap;
}
.tracker__progress-num {
  font-size: 44px;
  line-height: 1;
  color: var(--gold);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.tracker__progress-sep {
  font-size: 34px;
  opacity: .3;
  margin: 0 6px 0 4px;
}
.tracker__progress-total {
  font-size: 22px;
  opacity: .5;
}

/* The belt itself */
.tracker__belt {
  position: relative;
  height: 58px;
  background: #06060500;
  border: 1px solid var(--line);
  background-color: rgba(0,0,0,.4);
  border-radius: 3px;
  overflow: hidden;
  box-shadow: inset 0 2px 10px rgba(0,0,0,.5), inset 0 -2px 0 rgba(255,255,255,.03);
}
.tracker__belt-fill {
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 100%;
  background: var(--belt-color);
  transition:
    width .85s cubic-bezier(.2,.8,.2,1),
    background .55s var(--ease);
  box-shadow: inset 0 2px 4px rgba(255,255,255,.12), inset 0 -6px 12px rgba(0,0,0,.18);
}
.tracker__belt-gold {
  position: absolute;
  left: 0; right: 0;
  bottom: 10px;
  height: 4px;
  background: var(--gold);
  box-shadow: 0 0 20px rgba(184,137,60,.35);
  z-index: 2;
}
.tracker__belt-knot {
  position: absolute;
  left: 50%; top: 50%;
  width: 64px; height: 30px;
  background: var(--belt-color);
  border: 2px solid rgba(255,255,255,.25);
  transform: translate(-50%, -50%);
  border-radius: 3px;
  box-shadow: 0 6px 18px -6px rgba(0,0,0,.7);
  z-index: 3;
  transition: background .55s var(--ease);
}
.tracker__belt-knot::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 5px;
  height: 2px;
  background: var(--gold);
}
/* segment markers — 6 ticks overlaid */
.tracker__belt-stripes {
  position: absolute;
  left: 0; right: 0; top: 0; bottom: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  z-index: 4;
  pointer-events: none;
}
.tracker__belt-stripes span {
  position: relative;
}
.tracker__belt-stripes span::after {
  content: "";
  position: absolute;
  right: 0; top: 8px; bottom: 8px;
  width: 1px;
  background: rgba(255,255,255,.14);
}
.tracker__belt-stripes span:last-child::after { display: none; }
.tracker__belt-stripes span::before {
  content: "";
  position: absolute;
  right: -3px; top: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  transform: translateY(-50%);
  transition: background .4s, box-shadow .4s;
}
.tracker__belt-stripes span.is-active::before {
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(184,137,60,.2);
}
.tracker__belt-stripes span:last-child::before { display: none; }

.tracker__axis {
  margin-top: 14px;
  display: flex; justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.tracker__axis-mid { color: var(--gold); }

/* ---------- Cards grid ---------- */
.learn {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.learn__item {
  position: relative;
  padding: 30px 26px 30px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  transition:
    transform .5s var(--ease),
    box-shadow .5s var(--ease),
    border-color .4s,
    background .4s;
}
.learn__item:hover,
.learn__item.is-active {
  transform: translateY(-4px);
  border-color: rgba(255,255,255,.25);
  background: var(--paper-2);
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.8);
}
.learn__stripe {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 7px;
  background: var(--bg-alt);
  overflow: hidden;
  transition: height .4s var(--ease);
}
.learn__item:hover .learn__stripe,
.learn__item.is-active .learn__stripe { height: 10px; }

/* stripe color per belt */
.learn__item[data-belt="1"] .learn__stripe { background: #F3ECD4; box-shadow: inset 0 -1px 0 rgba(0,0,0,.4); }
.learn__item[data-belt="2"] .learn__stripe { background: #E8B923; }
.learn__item[data-belt="3"] .learn__stripe { background: #3B6E4B; }
.learn__item[data-belt="4"] .learn__stripe { background: #2E568C; }
.learn__item[data-belt="5"] .learn__stripe { background: #6B3C1A; }
.learn__item[data-belt="6"] .learn__stripe {
  background: linear-gradient(#0E0E0C 0, #0E0E0C 70%, var(--gold) 70%, var(--gold) 100%);
}

/* gold travelling mark — appears on hover/active */
.learn__stripe::before {
  content: "";
  position: absolute;
  right: -24px; top: 50%;
  width: 24px; height: 2px;
  background: var(--gold);
  transform: translateY(-50%);
  box-shadow: 0 0 10px rgba(184,137,60,.5);
  transition: right .6s var(--ease);
}
.learn__item:hover .learn__stripe::before,
.learn__item.is-active .learn__stripe::before { right: 14px; }

.learn__tag {
  display: inline-block;
  margin: 18px 0 16px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 6px 12px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.learn__item[data-belt="6"] .learn__tag {
  background: var(--gold);
  color: #0A0A09;
  border-color: var(--gold);
}
.learn__item h3 {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.18;
  letter-spacing: -0.018em;
  margin: 0 0 10px;
  color: var(--ink);
}
.learn__item p {
  margin: 0;
  font-size: 14.5px;
  font-weight: 450;
  line-height: 1.58;
  color: var(--muted);
  max-width: 36ch;
}
.learn__item--final::after {
  content: "黒帯";
  position: absolute;
  right: 14px; bottom: 8px;
  font-family: var(--serif);
  font-size: 52px;
  color: rgba(201,169,97,.06);
  pointer-events: none;
  line-height: 1;
}

/* =================================================================
   BELT DIVIDER
   ================================================================= */
.belt {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 44px;
  display: flex; align-items: center;
}
.belt__line {
  position: absolute; left: var(--pad-x); right: var(--pad-x);
  top: 50%;
  height: 10px;
  background: #141412;
  border: 1px solid var(--line);
  transform: translateY(-50%);
}
.belt__line::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0px;
  height: 2px;
  background: var(--gold);
}
.belt__knot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 48px; height: 22px;
  background: #141412;
  border: 1px solid var(--line);
  transform: translate(-50%, -50%);
  border-radius: 2px;
  box-shadow: 0 8px 24px -10px rgba(0,0,0,.7);
}
.belt__knot::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 2px;
  background: var(--gold);
}
.belt__gold {
  position: absolute;
  right: var(--pad-x);
  top: 50%;
  width: 48px; height: 10px;
  background: var(--gold);
  transform: translateY(-50%);
}

/* =================================================================
   ABOUT (02)
   ================================================================= */
.section--about { padding-top: clamp(70px, 8vw, 110px); }
.about__title {
  font-size: clamp(56px, 8.4vw, 130px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  max-width: 100%;
}
.about__title em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  color: var(--gold);
}
.about__title-dot {
  color: var(--gold);
  display: inline-block;
}
.about__grid {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) 220px;
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}
.about__label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 14px;
  border-top: 2px solid var(--ink);
}
.about__label span { color: var(--gold); }
.about__body { max-width: 64ch; }
.about__lead {
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.028em;
  margin: 0 0 24px;
  color: var(--ink);
}
.about__lead strong { font-family: var(--sans); font-weight: 700; color: var(--gold); }
.about__body p {
  font-size: 17px;
  font-weight: 450;
  line-height: 1.65;
  color: var(--ink-soft);
  margin: 0 0 24px;
}
.about__stats {
  display: flex; gap: 40px; flex-wrap: wrap;
  margin-top: 36px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
}
.about__stats li {
  display: flex; flex-direction: column;
}
.about__stats strong {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 54px;
  line-height: 1;
  color: var(--gold);
  margin-bottom: 6px;
  letter-spacing: -0.03em;
}
.about__stats span {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  max-width: 18ch;
}
.about__mark {
  margin: 0;
  width: 180px;
  aspect-ratio: 1;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.8);
  position: relative;
  overflow: hidden;
  justify-self: end;
}
.about__mark::after {
  content: "";
  position: absolute;
  left: -4%; right: -4%; bottom: 18px;
  height: 6px;
  background: var(--gold);
  transform: rotate(-1.5deg);
}
.about__mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: invert(1) brightness(1.2) contrast(1.05);
}

/* =================================================================
   TEAM (03)
   ================================================================= */
.section--team {
  padding-top: clamp(60px, 7vw, 100px);
  padding-bottom: clamp(60px, 7vw, 100px);
}
.team {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .5s;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,255,255,.25);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,.9);
}
.card__photo {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--ink);
}
.card__photo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.08) brightness(0.95) sepia(0.18);
  transition: transform 1.2s var(--ease), filter .8s;
}
.card:hover .card__photo img {
  transform: scale(1.04);
  filter: grayscale(0.2) contrast(1.05) brightness(1) sepia(0.05);
}
.card__photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.75), transparent 55%);
  pointer-events: none;
}
.card__photo-cap {
  position: absolute;
  left: 14px; top: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #0A0A09;
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 7px 13px;
  border-radius: 999px;
  box-shadow: 0 4px 18px -6px rgba(0,0,0,0.5);
  transition:
    background .35s var(--ease),
    color .35s var(--ease),
    transform .35s var(--ease),
    box-shadow .35s var(--ease);
  z-index: 2;
}
.card:hover .card__photo-cap,
.card.is-tapped .card__photo-cap {
  background: var(--gold);
  color: #0A0A09;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px -8px rgba(201, 169, 97, 0.65);
}

.card__body {
  padding: 28px 28px 32px;
  display: flex; flex-direction: column;
  flex: 1;
}
.card__name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
  color: var(--ink);
}
.card__handle {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  font-size: 16px;
  color: var(--gold);
  transition: color .2s;
}
.card__handle:hover { color: var(--ink); }

.card__belt {
  position: relative;
  height: 8px;
  background: #000;
  margin: 20px 0 18px;
  border-radius: 1px;
}
.card__belt span {
  position: absolute;
  left: 0; bottom: 1px; right: 0;
  height: 2px;
  background: var(--gold);
}
.card__belt i {
  position: absolute;
  right: 10px; top: -3px;
  width: 20px; height: 14px;
  background: var(--gold);
}
.card__role {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 20px;
}
.card__bullets {
  display: flex; flex-direction: column;
  gap: 13px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  flex: 1;
}
.card__bullets li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  font-weight: 450;
  line-height: 1.6;
  color: var(--ink-soft);
}
.card__bullets li strong { color: var(--ink); }
.card__bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 2px;
  background: var(--gold);
}
.card__bullets li strong { color: var(--ink); }

/* =================================================================
   FINAL CTA
   ================================================================= */
.final {
  position: relative;
  background: linear-gradient(180deg, var(--bg) 0%, #000 100%);
  color: var(--ink);
  overflow: hidden;
  padding: clamp(80px, 11vw, 160px) var(--pad-x) clamp(70px, 9vw, 130px);
  text-align: center;
  border-top: 1px solid var(--line);
}
.final::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 2px;
  background: var(--gold);
}
.final::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--gold);
}
.final__grain {
  position: absolute; inset: 0;
  background:
    radial-gradient(700px 400px at 20% 20%, rgba(184,137,60,.14), transparent 60%),
    radial-gradient(700px 400px at 80% 90%, rgba(184,137,60,.10), transparent 60%);
  pointer-events: none;
}
.final__inner {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
}
.final__kanji {
  position: absolute;
  top: -140px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--serif);
  font-size: 380px;
  line-height: 1;
  color: rgba(255,255,255,0.028);
  letter-spacing: -0.04em;
  pointer-events: none;
  z-index: 0;
  white-space: nowrap;
}
.final__kicker {
  position: relative;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-soft);
  margin: 0 0 28px;
}
.final__title {
  position: relative;
  font-family: var(--sans);
  font-weight: 700;
  font-size: clamp(48px, 7.2vw, 108px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0 0 26px;
  color: var(--ink);
}
.final__title span {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: -0.022em;
}
.final__sub {
  position: relative;
  font-size: 16.5px;
  font-weight: 450;
  color: var(--ink-soft);
  margin: 0 0 44px;
  letter-spacing: 0.005em;
}
.final__sub strong { color: var(--gold); font-weight: 600; }
.final__sub strong { color: var(--gold); font-weight: 600; }
.final__cta-stack {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* =================================================================
   FOOTER
   ================================================================= */
.foot {
  background: #000;
  border-top: 1px solid var(--line);
  padding: 32px var(--pad-x);
}
.foot__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.foot__brand {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}
.foot__brand em { font-style: italic; font-weight: 500; color: var(--muted); }
.foot__brand-logo { height: 22px; width: auto; filter: invert(1) brightness(1.2); }
.foot__meta {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--mono);
  letter-spacing: 0.04em;
}
.foot__ig {
  width: 34px; height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink);
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.foot__ig:hover { background: var(--ink); color: #000; border-color: var(--ink); transform: rotate(-4deg); }

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 1040px) {
  .hero__inner { grid-template-columns: 1.3fr 1fr; gap: 40px; }
  .nav__links { gap: 26px; font-size: 12.5px; }
  .nav__pill { padding: 12px 12px 12px 24px; gap: 16px; }
  .learn { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: 1fr 1fr; gap: 24px; }
  .about__grid { grid-template-columns: 120px 1fr; }
  .about__mark {
    grid-column: 1 / -1;
    width: 150px;
    aspect-ratio: 1;
    justify-self: end;
    padding: 18px;
  }
  .about__mark::after { bottom: 14px; }
}
@media (max-width: 820px) {
  .nav { padding: 14px var(--pad-x) 0; }
  .nav__pill { grid-template-columns: auto; justify-content: center; gap: 12px; padding: 12px 22px; }
  .nav__links { display: none; }
  .nav__cta { display: none; }

  .hero {
    padding-top: calc(clamp(40px, 6vw, 80px) + 90px);
    padding-bottom: clamp(40px, 8vw, 80px);
  }
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero__title { font-size: clamp(44px, 11vw, 72px); max-width: 100%; }
  .hero__dna { display: none; }

  .section { padding: 72px var(--pad-x); }
  .section__title { font-size: clamp(38px, 10vw, 62px); max-width: 100%; }

  .learn { grid-template-columns: 1fr; gap: 14px; }

  /* compact tracker — fino e simples */
  .tracker {
    padding: 14px 18px 14px;
    margin: 24px 0 28px;
    border-radius: 10px;
    top: 14px;
  }
  .tracker__head {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 12px;
  }
  .tracker__rank { font-size: 17px; letter-spacing: -0.015em; }
  .tracker__label { display: none; }
  .tracker__progress-num { font-size: 24px; }
  .tracker__progress-sep { font-size: 18px; margin: 0 3px 0 2px; }
  .tracker__progress-total { font-size: 14px; }
  .tracker__belt { height: 30px; }
  .tracker__belt-knot { width: 44px; height: 18px; }
  .tracker__belt-gold { bottom: 5px; height: 2px; }
  .tracker__axis { display: none; }
  .tracker.is-pinned { padding: 10px 18px 10px; }
  .tracker.is-pinned .tracker__rank { font-size: 15px; }
  .tracker.is-pinned .tracker__progress-num { font-size: 22px; }
  .tracker.is-pinned .tracker__belt { height: 26px; }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .about__label { border-top: none; padding-top: 0; }
  .about__lead { font-size: 26px; }
  .about__stats { gap: 28px; }
  .about__stats strong { font-size: 38px; }
  .about__mark {
    max-width: 160px;
    aspect-ratio: auto;
    height: auto;
    justify-self: center;
    padding: 18px;
  }

  .team { grid-template-columns: 1fr; }

  .final__title { font-size: clamp(44px, 12vw, 68px); }
  .final__kanji { font-size: 220px; top: -70px; }

  .foot__inner { flex-direction: column; text-align: center; gap: 14px; }
}

@media (max-width: 440px) {
  .hero__meta { font-size: 10.5px; gap: 6px; }
  .btn--primary, .btn--gold { width: 100%; justify-content: center; }
  .hero__cta { flex-direction: column; align-items: stretch; gap: 16px; }
  .hero__cta-note { text-align: center; }
}

/* reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}