:root {
  --ink: #0a0a0a;
  --paper: #f2f0e8;
  --signal: #d8ff3e;
  --muted: #a4a49d;
  --line: rgba(10, 10, 10, 0.2);
  --shell: min(1180px, calc(100vw - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
a { color: inherit; }
button, input, textarea { font: inherit; }
.section-shell { width: var(--shell); margin-inline: auto; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 max(20px, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid rgba(242, 240, 232, 0.18);
  background: rgba(10, 10, 10, 0.94);
  color: var(--paper);
  backdrop-filter: blur(14px);
}
.brand { display: flex; gap: 12px; align-items: center; text-decoration: none; font: 500 0.82rem/1 "DM Mono", monospace; letter-spacing: 0.08em; }
.brand-mark { display: grid; place-items: center; width: 36px; height: 36px; background: var(--signal); color: var(--ink); font-weight: 500; letter-spacing: -0.1em; }
.header-cta { font: 500 0.8rem/1 "DM Mono", monospace; text-transform: uppercase; text-underline-offset: 5px; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  align-items: center;
  gap: clamp(40px, 7vw, 100px);
  min-height: calc(100vh - 72px);
  padding-block: 72px;
}
.eyebrow { margin: 0 0 20px; font: 500 0.76rem/1.4 "DM Mono", monospace; letter-spacing: 0.12em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 28px; font-size: clamp(4rem, 9.5vw, 8.5rem); line-height: 0.82; letter-spacing: -0.075em; font-weight: 700; }
h1 span { color: transparent; -webkit-text-stroke: 2px var(--ink); }
.hero-lede { max-width: 670px; margin-bottom: 34px; font-size: clamp(1.15rem, 2vw, 1.45rem); line-height: 1.45; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; border: 2px solid var(--ink); padding: 0 22px; font: 600 0.86rem/1 "DM Mono", monospace; text-decoration: none; text-transform: uppercase; cursor: pointer; transition: transform 160ms ease, background 160ms ease, color 160ms ease; }
.button:hover { transform: translate(-3px, -3px); box-shadow: 4px 4px 0 var(--ink); }
.button-primary { background: var(--signal); color: var(--ink); }
.button-secondary { background: transparent; color: var(--ink); }
.text-link { font-weight: 600; text-underline-offset: 5px; }
.format-strip { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 42px; font: 500 0.72rem/1.4 "DM Mono", monospace; text-transform: uppercase; }
.format-strip span::before { content: "■"; margin-right: 9px; color: var(--ink); font-size: 0.55em; vertical-align: 2px; }

.signal-card { border: 2px solid var(--paper); padding: 18px; background: var(--ink); color: var(--signal); box-shadow: 15px 15px 0 var(--signal); transform: rotate(1.5deg); }
.signal-topline, .transport { display: flex; justify-content: space-between; gap: 16px; font: 500 0.7rem/1 "DM Mono", monospace; letter-spacing: 0.06em; }
.waveform { display: block; width: 100%; height: auto; margin-block: 35px; overflow: visible; }
.grid-line { fill: none; stroke: rgba(242,240,232,0.12); stroke-width: 1; }
.wave { fill: none; stroke-linecap: square; stroke-linejoin: miter; }
.wave-one { stroke: var(--signal); stroke-width: 3; filter: drop-shadow(0 0 7px rgba(216,255,62,0.35)); animation: pulse 2.8s ease-in-out infinite; }
.wave-two { stroke: var(--paper); stroke-width: 1; opacity: 0.35; }
.play { color: var(--ink); background: var(--signal); padding: 5px 7px; margin-top: -6px; }
.transport-status { color: var(--paper); }
@keyframes pulse { 50% { opacity: 0.62; transform: translateY(2px); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .wave-one { animation: none; } .button { transition: none; } }

.lessons, .program, .formats { padding-block: 110px; }
.section-heading { display: grid; grid-template-columns: 0.58fr 1.25fr 0.8fr; gap: 40px; align-items: start; margin-bottom: 64px; }
.section-heading h2, .honest-grid h2, .booking h2 { margin-bottom: 0; font-size: clamp(2.6rem, 6vw, 5.5rem); line-height: 0.95; letter-spacing: -0.055em; }
.section-heading > p:last-child { max-width: 470px; }
.topic-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 2px solid var(--ink); border-left: 2px solid var(--ink); }
.topic-grid article { min-height: 260px; padding: 32px; border-right: 2px solid var(--ink); border-bottom: 2px solid var(--ink); }
.topic-grid article > span { font: 500 0.76rem/1 "DM Mono", monospace; }
.topic-grid h3 { margin: 55px 0 16px; font-size: 1.65rem; letter-spacing: -0.025em; }
.topic-grid p { max-width: 470px; margin-bottom: 0; }

.honest-section { background: var(--signal); border-block: 2px solid var(--ink); }
.honest-grid { display: grid; grid-template-columns: 1fr 0.8fr; gap: 80px; padding-block: 100px; }
.eyebrow.dark { color: var(--ink); }
.honest-copy { max-width: 620px; font-size: 1.15rem; }
.honest-copy p:last-child { margin-bottom: 0; }

.section-heading.compact { grid-template-columns: 0.55fr 1.45fr; }
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.price-card { display: flex; flex-direction: column; min-height: 430px; border: 2px solid var(--ink); padding: 36px; }
.price-card.featured { background: var(--ink); color: var(--paper); }
.price-label { font: 500 0.8rem/1 "DM Mono", monospace; text-transform: uppercase; }
.save-tag { display: inline-block; margin-left: 8px; border: 1px solid currentColor; padding: 5px 7px; font-size: 0.68rem; }
.price { margin: 32px 0; font-size: clamp(3.4rem, 6vw, 6rem); font-weight: 700; line-height: 0.9; letter-spacing: -0.07em; }
.price sup { font-size: 0.36em; vertical-align: top; }
.price span { font: 400 0.9rem/1 "DM Mono", monospace; letter-spacing: 0; }
.price-card > p:nth-of-type(3) { max-width: 500px; margin-bottom: 36px; }
.price-card .button { align-self: flex-start; margin-top: auto; }
.featured .button-primary { border-color: var(--signal); }

.formats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.formats article { padding: 38px 0; border-top: 2px solid var(--ink); }
.formats article:first-child { padding-right: 50px; }
.formats article:last-child { padding-left: 50px; border-left: 1px solid var(--line); }
.format-number { font: 500 0.75rem/1 "DM Mono", monospace; }
.formats h3 { margin: 70px 0 16px; font-size: 2rem; letter-spacing: -0.04em; }
.formats p { max-width: 520px; margin-bottom: 0; }

.booking { padding-block: 110px; background: var(--ink); color: var(--paper); }
.booking-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: clamp(50px, 8vw, 120px); align-items: start; }
.booking h2 { margin-bottom: 26px; }
.booking-intro { max-width: 500px; color: #c6c5bd; }
.booking-form { display: grid; gap: 24px; }
.calendar-action { display: grid; gap: 14px; border: 1px solid var(--signal); padding: 24px; }
.calendar-action > p:first-child { margin: 0; font-size: 1.25rem; font-weight: 600; }
.calendar-action .button { width: 100%; }
.calendar-note { margin: 0; color: #aaa9a3; font-size: 0.84rem; }
.form-divider { display: flex; align-items: center; gap: 14px; margin: 2px 0; color: #aaa9a3; font: 500 0.72rem/1.4 "DM Mono", monospace; text-transform: uppercase; }
.form-divider::before, .form-divider::after { content: ""; height: 1px; flex: 1; background: rgba(242,240,232,0.25); }
.field-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.booking-form label, .booking-form legend { display: grid; gap: 9px; font: 500 0.76rem/1.4 "DM Mono", monospace; text-transform: uppercase; letter-spacing: 0.04em; }
.booking-form input:not([type="radio"]), .booking-form textarea, .booking-result textarea { width: 100%; border: 1px solid rgba(242,240,232,0.4); border-radius: 0; outline: none; padding: 15px; background: #171717; color: var(--paper); font: 400 1rem/1.45 "Space Grotesk", sans-serif; text-transform: none; }
.booking-form input:focus, .booking-form textarea:focus { border-color: var(--signal); box-shadow: 0 0 0 2px var(--signal); }
.booking-form fieldset { min-width: 0; margin: 0; border: 0; padding: 0; }
.choice-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.choice-row label { position: relative; display: block; }
.choice-row input { position: absolute; opacity: 0; pointer-events: none; }
.choice-row span { display: flex; min-height: 54px; align-items: center; justify-content: center; border: 1px solid rgba(242,240,232,0.4); padding: 12px; text-align: center; cursor: pointer; }
.choice-row input:checked + span { border-color: var(--signal); background: var(--signal); color: var(--ink); }
.choice-row input:focus-visible + span { outline: 2px solid var(--paper); outline-offset: 3px; }
.submit-button { width: 100%; margin-top: 8px; }
.form-note { margin: -10px 0 0; color: #aaa9a3; font-size: 0.82rem; text-align: center; }
.booking-result { grid-column: 2; border: 1px solid var(--signal); padding: 30px; background: #171717; }
.booking-result h3 { font-size: 1.8rem; }
.booking-result textarea { margin-block: 16px; resize: vertical; }
.result-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.booking .button-secondary { border-color: var(--paper); color: var(--paper); }
.payment-step { margin-top: 28px; border-top: 1px solid rgba(242,240,232,0.24); padding-top: 22px; }
.payment-step p { margin-bottom: 12px; color: var(--signal); font-size: 0.88rem; }
.payment-link { color: var(--paper); font: 500 0.75rem/1.4 "DM Mono", monospace; text-underline-offset: 5px; text-transform: uppercase; }

.site-footer { border-top: 1px solid rgba(242,240,232,0.18); background: var(--ink); color: var(--paper); }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; padding-block: 34px; font: 500 0.72rem/1.4 "DM Mono", monospace; text-transform: uppercase; }
.footer-inner p { margin-bottom: 0; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .signal-card { max-width: 680px; transform: none; }
  .section-heading { grid-template-columns: 1fr; gap: 16px; }
  .section-heading.compact { grid-template-columns: 1fr; }
  .honest-grid, .booking-grid { grid-template-columns: 1fr; }
  .booking-result { grid-column: 1; }
}

@media (max-width: 640px) {
  :root { --shell: min(100% - 28px, 1180px); }
  body { font-size: 16px; }
  .site-header { min-height: 64px; padding-inline: 14px; }
  .brand { font-size: 0.68rem; }
  .brand-mark { width: 32px; height: 32px; }
  .header-cta { font-size: 0.68rem; }
  .hero { padding-block: 54px 70px; }
  h1 { font-size: clamp(3.5rem, 18vw, 5.4rem); }
  h1 span { -webkit-text-stroke-width: 1.5px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .button { width: 100%; }
  .text-link { text-align: center; }
  .signal-card { padding: 13px; box-shadow: 8px 8px 0 var(--signal); }
  .lessons, .program, .formats, .booking { padding-block: 74px; }
  .topic-grid, .pricing-grid, .formats, .field-row, .choice-row { grid-template-columns: 1fr; }
  .topic-grid article { min-height: 230px; padding: 26px; }
  .honest-grid { gap: 40px; padding-block: 74px; }
  .price-card { min-height: 390px; padding: 26px; }
  .formats article:first-child, .formats article:last-child { padding: 32px 0; border-left: 0; }
  .formats h3 { margin-top: 44px; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
  .footer-inner p:last-child { overflow-wrap: anywhere; }
}