/* PROMPTKITS — Apple-inspired design system */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #000000;
  --near-black: #1d1d1f;
  --white: #ffffff;
  --off-white: #f5f5f7;
  --light-grey: #86868b;
  --mid-grey: #6e6e73;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --violet: #bf5af2;
  --divider-dark: rgba(255,255,255,0.1);
  --divider-light: rgba(0,0,0,0.08);
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
}

body {
  font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--white);
  color: var(--near-black);
  line-height: 1.47;
  letter-spacing: -0.01em;
}

/* ================ NAV ================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 9999;
  height: 44px;
  background: rgba(0,0,0,0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.nav-inner {
  max-width: 1024px;
  height: 100%;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 21px;
  font-weight: 600;
  color: #f5f5f7;
  text-decoration: none;
  letter-spacing: -0.022em;
}

.nav-logo span {
  background: linear-gradient(135deg, #bf5af2, #5e5ce6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-links a {
  color: #f5f5f7;
  opacity: 0.8;
  text-decoration: none;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: opacity 0.3s ease;
}

.nav-links a:hover { opacity: 1; }

/* ================ BUTTONS ================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.022em;
  padding: 12px 22px;
  border-radius: 980px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  line-height: 1;
  min-width: 28px;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-primary:hover { background: var(--blue-hover); }

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.6);
}

.btn-outline-light:hover {
  background: var(--white);
  color: var(--black);
}

.btn-link-dark,
.btn-link-light {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.022em;
  text-decoration: none;
  line-height: 1;
  transition: color 0.2s;
}

.btn-link-dark { color: var(--blue); }
.btn-link-light { color: #2997ff; }

.btn-link-dark:hover,
.btn-link-light:hover { text-decoration: underline; }

.btn-link-dark::after,
.btn-link-light::after {
  content: "›";
  margin-left: 4px;
  font-size: 19px;
  line-height: 1;
  transform: translateY(-1px);
}

/* ================ BILLBOARD (core section) ================ */
.billboard {
  position: relative;
  width: 100%;
  padding: 70px 22px 0;
  text-align: center;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.billboard.tall { min-height: 692px; }
.billboard.short { min-height: 580px; padding-top: 66px; }

.billboard.dark { background: var(--black); color: var(--white); }
.billboard.light { background: var(--off-white); color: var(--near-black); }
.billboard.white { background: var(--white); color: var(--near-black); }

.billboard .eyebrow {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.004em;
  margin-bottom: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.billboard .eyebrow .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.4;
}

.billboard h1,
.billboard h2 {
  font-size: clamp(44px, 7vw, 80px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.05;
  max-width: 900px;
  margin: 12px auto 0;
}

.billboard .subhead {
  font-size: clamp(21px, 2.5vw, 28px);
  font-weight: 400;
  letter-spacing: 0.004em;
  line-height: 1.2;
  max-width: 720px;
  margin: 18px auto 22px;
}

.billboard .subhead.muted-dark { color: var(--mid-grey); }

.billboard .price {
  font-size: 17px;
  font-weight: 400;
  letter-spacing: -0.022em;
  margin-bottom: 22px;
  opacity: 0.9;
}

.billboard .cta-row {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  margin-bottom: 40px;
}

/* Gradient accent text */
.grad {
  background: linear-gradient(135deg, #bf5af2 0%, #5e5ce6 50%, #2997ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Hero glow visual */
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  height: 900px;
  background: radial-gradient(circle, rgba(191,90,242,0.15) 0%, rgba(94,92,230,0.08) 30%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.billboard > *:not(.hero-glow) { position: relative; z-index: 1; }

/* ================ HERO STAGE — floating kit cards ================ */
.hero-stage {
  position: relative;
  margin-top: 60px;
  width: 100%;
  max-width: 900px;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1400px;
  padding: 0 22px;
}

.stage-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 400px;
  background: radial-gradient(ellipse at center, rgba(191,90,242,0.28) 0%, rgba(94,92,230,0.18) 35%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}

.kit-card {
  position: absolute;
  width: 240px;
  height: 300px;
  background: linear-gradient(160deg, rgba(40,40,45,0.95), rgba(15,15,20,0.95));
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 40px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05) inset;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  text-align: left;
}

.kit-card:hover { transform: translateY(-8px) !important; }

.kit-left {
  transform: translateX(-180px) rotateY(18deg) rotateZ(-4deg);
  z-index: 1;
}

.kit-center {
  z-index: 3;
  background: linear-gradient(160deg, #3a1670 0%, #1a0638 50%, #0a001a 100%);
  border: 1px solid rgba(191,90,242,0.3);
  box-shadow: 0 50px 100px rgba(0,0,0,0.7), 0 0 60px rgba(191,90,242,0.35), 0 0 0 1px rgba(255,255,255,0.08) inset;
}

.kit-right {
  transform: translateX(180px) rotateY(-18deg) rotateZ(4deg);
  z-index: 1;
}

.kit-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #86868b;
}

.kit-center .kit-tag { color: #c9b0ff; }

.kit-title {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: #f5f5f7;
  line-height: 1.1;
  margin-top: 2px;
}

.kit-center .kit-title {
  background: linear-gradient(135deg, #ffffff, #c9b0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.kit-meta {
  font-size: 13px;
  font-weight: 500;
  color: #6e6e73;
  margin-top: 6px;
  letter-spacing: -0.01em;
}

.kit-center .kit-meta { color: #a1a1a6; }

.kit-bars {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kit-bars span {
  display: block;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, rgba(255,255,255,0.12), rgba(255,255,255,0.04));
}

.kit-bars span:nth-child(1) { width: 90%; }
.kit-bars span:nth-child(2) { width: 72%; }
.kit-bars span:nth-child(3) { width: 84%; }
.kit-bars span:nth-child(4) { width: 60%; }
.kit-bars span:nth-child(5) { width: 78%; }
.kit-bars span:nth-child(6) { width: 66%; }
.kit-bars span:nth-child(7) { width: 88%; }

.kit-center .kit-bars span {
  background: linear-gradient(90deg, rgba(191,90,242,0.55), rgba(94,92,230,0.2));
}

/* ================ FEATURES LIST ================ */
.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 14px 48px;
  width: 100%;
  max-width: 820px;
  margin: 0 auto 30px;
  text-align: left;
}

.feature-list li {
  font-size: 15px;
  font-weight: 400;
  letter-spacing: -0.014em;
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.88;
}

.feature-list li::before {
  content: "";
  width: 18px; height: 18px;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230071e3' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
}

.billboard.dark .feature-list li::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232997ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
}

/* ================ PLANS GRID ================ */
.plans-intro {
  padding: 120px 22px 40px;
  text-align: center;
  background: var(--white);
}

.plans-intro h1 {
  font-size: clamp(48px, 6.5vw, 80px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.05;
  margin-bottom: 18px;
}

.plans-intro p {
  font-size: 24px;
  color: var(--mid-grey);
  max-width: 680px;
  margin: 0 auto;
  letter-spacing: 0.004em;
  line-height: 1.2;
}

.plans-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 60px 22px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.plan {
  background: var(--off-white);
  border-radius: 28px;
  padding: 44px 38px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.4s ease;
}

.plan:hover { transform: translateY(-4px); }

.plan.dark {
  background: linear-gradient(160deg, #1a1a1c, #000);
  color: var(--white);
}

.plan.featured {
  background: linear-gradient(160deg, #2a1054, #000);
  color: var(--white);
  box-shadow: 0 30px 80px rgba(94,92,230,0.25);
}

.plan .plan-tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--mid-grey);
}

.plan.featured .plan-tag,
.plan.dark .plan-tag { color: #a1a1a6; }

.plan.featured .plan-tag { color: #c9b0ff; }

.plan h3 {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin-bottom: 10px;
}

.plan .plan-desc {
  font-size: 15px;
  color: var(--mid-grey);
  line-height: 1.5;
  min-height: 68px;
  margin-bottom: 28px;
  letter-spacing: -0.014em;
}

.plan.featured .plan-desc,
.plan.dark .plan-desc { color: #a1a1a6; }

.plan .price-block {
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--divider-light);
}

.plan.dark .price-block,
.plan.featured .price-block {
  border-bottom-color: rgba(255,255,255,0.1);
}

.plan .price-amount {
  font-size: 48px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1;
}

.plan .price-amount .dollar {
  font-size: 28px;
  font-weight: 600;
  vertical-align: top;
  margin-right: 2px;
  margin-top: 6px;
  display: inline-block;
}

.plan .price-period {
  font-size: 17px;
  color: var(--mid-grey);
  margin-top: 6px;
  letter-spacing: -0.022em;
}

.plan.dark .price-period,
.plan.featured .price-period { color: #a1a1a6; }

.plan ul {
  list-style: none;
  flex: 1;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan ul li {
  font-size: 14px;
  letter-spacing: -0.014em;
  line-height: 1.45;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.plan ul li::before {
  content: "";
  width: 14px; height: 14px;
  flex-shrink: 0;
  margin-top: 3px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230071e3' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-size: contain;
  background-repeat: no-repeat;
}

.plan.dark ul li::before,
.plan.featured ul li::before {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232997ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
}

.plan .btn {
  width: 100%;
}

/* Crypto strip */
.crypto-strip {
  background: var(--black);
  color: var(--white);
  padding: 80px 22px;
  text-align: center;
}

.crypto-strip .eyebrow {
  color: #2997ff;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.022em;
  margin-bottom: 12px;
}

.crypto-strip h2 {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.08;
  max-width: 820px;
  margin: 0 auto 18px;
}

.crypto-strip p {
  font-size: 21px;
  color: #a1a1a6;
  max-width: 620px;
  margin: 0 auto 28px;
  letter-spacing: 0.004em;
}

.crypto-badges {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #86868b;
  text-transform: uppercase;
}

/* ================ PAYMENT PAGE ================ */
.payment-hero {
  padding: 120px 22px 40px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.eyebrow-blue {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 16px;
}

.payment-hero h1 {
  font-size: clamp(44px, 6.5vw, 72px);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.05;
  margin-bottom: 36px;
}

.order-summary {
  background: var(--off-white);
  border-radius: 18px;
  padding: 22px 26px;
  max-width: 460px;
  margin: 0 auto;
  text-align: left;
}

.order-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  font-size: 15px;
  letter-spacing: -0.014em;
}

.order-row + .order-row { border-top: 1px solid var(--divider-light); }

.order-label { color: var(--mid-grey); }
.order-value { font-weight: 500; color: var(--near-black); }

.order-total .order-label,
.order-total .order-value {
  font-size: 19px;
  font-weight: 600;
  color: var(--near-black);
}

.pay-section {
  max-width: 820px;
  margin: 0 auto;
  padding: 40px 22px;
}

.step-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.step-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--black);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 600;
  flex-shrink: 0;
}

.step-head h2 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.step-intro {
  font-size: 16px;
  color: var(--mid-grey);
  margin-bottom: 28px;
  max-width: 640px;
  letter-spacing: -0.014em;
  line-height: 1.5;
}

/* Crypto tabs */
.crypto-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}

.crypto-tab {
  background: var(--off-white);
  border: 2px solid transparent;
  border-radius: 14px;
  padding: 18px 16px;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.crypto-tab:hover { background: #ebebef; }

.crypto-tab.active {
  background: var(--black);
  border-color: var(--black);
  color: var(--white);
}

.tab-symbol {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.014em;
}

.tab-name {
  font-size: 12px;
  color: var(--mid-grey);
  letter-spacing: -0.008em;
}

.crypto-tab.active .tab-name { color: #a1a1a6; }

/* Pay box */
.pay-box {
  background: var(--off-white);
  border-radius: 22px;
  padding: 36px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  align-items: center;
}

.pay-qr {
  background: var(--white);
  border-radius: 16px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
}

.pay-qr img {
  max-width: 100%;
  height: auto;
  display: block;
}

.pay-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.pay-field { display: flex; flex-direction: column; gap: 6px; }

.pay-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid-grey);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.warn-dot {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #b91c1c;
  background: #fee2e2;
  padding: 3px 8px;
  border-radius: 100px;
  text-transform: uppercase;
}

.pay-network {
  font-size: 18px;
  font-weight: 500;
  color: var(--near-black);
  letter-spacing: -0.014em;
}

.pay-amount {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.pay-amount #cryptoAmount {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--near-black);
  line-height: 1.1;
}

.pay-amount-usd {
  font-size: 14px;
  color: var(--mid-grey);
  letter-spacing: -0.014em;
}

.pay-address-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
  background: var(--white);
  border: 1px solid var(--divider-light);
  border-radius: 12px;
  padding: 4px 4px 4px 14px;
}

.pay-address {
  flex: 1;
  font-family: "SF Mono", Monaco, monospace;
  font-size: 13px;
  color: var(--near-black);
  word-break: break-all;
  align-self: center;
  letter-spacing: -0.005em;
  padding: 10px 0;
}

.copy-btn {
  font-family: inherit;
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  letter-spacing: -0.014em;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.copy-btn:hover { background: #333; }
.copy-btn.copied { background: #059669; }

.pay-warning {
  margin-top: 18px;
  padding: 14px 18px;
  background: #fffbea;
  border: 1px solid #fde68a;
  border-radius: 12px;
  color: #78350f;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.014em;
}

/* Form */
.pay-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--off-white);
  border-radius: 22px;
  padding: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--near-black);
  letter-spacing: -0.01em;
}

.form-field label small {
  font-weight: 400;
  color: var(--mid-grey);
  font-size: 12px;
}

.form-field input,
.form-field select,
.form-field textarea {
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--divider-light);
  background: var(--white);
  color: var(--near-black);
  letter-spacing: -0.014em;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
}

.form-field textarea { resize: vertical; }

.form-submit {
  margin-top: 10px;
  justify-content: center;
  padding: 14px 22px;
  font-size: 17px;
  font-weight: 500;
}

.form-note {
  text-align: center;
  font-size: 13px;
  color: var(--mid-grey);
  margin-top: 2px;
}

/* Responsive */
@media (max-width: 700px) {
  .pay-box {
    grid-template-columns: 1fr;
    padding: 24px;
    gap: 24px;
  }
  .pay-qr { max-width: 220px; margin: 0 auto; }
  .form-row { grid-template-columns: 1fr; }
  .pay-form { padding: 24px; }
  .order-summary { padding: 18px 20px; }
}

/* ================ FOOTER ================ */
footer {
  background: var(--off-white);
  padding: 40px 22px 22px;
  border-top: 1px solid var(--divider-light);
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

footer .logo {
  font-size: 15px;
  font-weight: 600;
  color: var(--near-black);
  text-decoration: none;
  letter-spacing: -0.022em;
}

footer .logo span {
  background: linear-gradient(135deg, #bf5af2, #5e5ce6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

footer p {
  font-size: 12px;
  color: var(--mid-grey);
  letter-spacing: -0.01em;
}

/* ================ RESPONSIVE ================ */
@media (max-width: 900px) {
  .hero-stage { height: 300px; max-width: 700px; }
  .kit-card { width: 200px; height: 260px; padding: 22px 20px; }
  .kit-left { transform: translateX(-140px) rotateY(18deg) rotateZ(-4deg); }
  .kit-right { transform: translateX(140px) rotateY(-18deg) rotateZ(4deg); }
  .kit-title { font-size: 22px; }
}

@media (max-width: 734px) {
  .nav-links { gap: 18px; }
  .nav-links li:not(:last-child) { display: none; }
  .billboard { padding: 54px 16px 0; }
  .billboard.tall { min-height: 560px; }
  .billboard.short { min-height: 500px; }
  .hero-stage { height: 260px; }
  .kit-card { width: 170px; height: 220px; padding: 18px 16px; border-radius: 20px; }
  .kit-left { transform: translateX(-100px) rotateY(20deg) rotateZ(-4deg); }
  .kit-right { transform: translateX(100px) rotateY(-20deg) rotateZ(4deg); }
  .kit-title { font-size: 18px; }
  .kit-meta { font-size: 11px; }
  .plan { padding: 36px 28px; }
}