:root {
  --ink: #111318;
  --muted: #626773;
  --line: rgba(17, 19, 24, 0.12);
  --paper: #f7f7f4;
  --white: #ffffff;
  --blue: #0a84ff;
  --blue-dark: #0065d8;
  --aqua: #4aa3ff;
  --mint: #57b99d;
  --green: #2563eb;
  --shadow: 0 28px 80px rgba(17, 19, 24, 0.16);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f5f7fa;
  letter-spacing: 0;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(150px, 240px) 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(17, 19, 24, 0.08);
  backdrop-filter: blur(22px) saturate(160%);
}

.brand img {
  width: 188px;
  height: auto;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 28px;
  font-size: 14px;
  color: rgba(17, 19, 24, 0.72);
}

.nav a,
.header-cta,
.secondary-link,
.footer a {
  text-decoration: none;
}

.nav a:hover,
.secondary-link:hover,
.footer a:hover {
  color: var(--blue-dark);
}

.header-cta {
  min-width: 82px;
  padding: 9px 18px;
  border-radius: 999px;
  color: var(--white);
  background: var(--blue);
  font-size: 14px;
  font-weight: 650;
  text-align: center;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: center;
  min-height: calc(100svh - 72px);
  padding: clamp(56px, 8vw, 112px) clamp(18px, 5vw, 72px) clamp(46px, 6vw, 82px);
  overflow: hidden;
  background:
    linear-gradient(180deg, #ffffff 0%, #f7f9fc 58%, #eef4f8 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: auto -10vw -12vw -10vw;
  height: 28vw;
  min-height: 240px;
  background:
    radial-gradient(circle at 72% 18%, rgba(74, 163, 255, 0.16), transparent 32%),
    radial-gradient(circle at 32% 60%, rgba(87, 185, 157, 0.12), transparent 30%),
    linear-gradient(180deg, transparent, rgba(230, 237, 244, 0.55));
  pointer-events: none;
}

.hero-copy,
.hero-visual,
.section,
.proof-band,
.series,
.footer {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 790px;
  margin-bottom: 22px;
  font-size: clamp(56px, 8vw, 112px);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
  letter-spacing: 0;
}

.lede {
  max-width: 690px;
  color: rgba(17, 19, 24, 0.72);
  font-size: clamp(20px, 2.3vw, 28px);
  line-height: 1.32;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 24px;
  margin-top: 34px;
}

.primary-button {
  min-height: 48px;
  padding: 0 25px;
  border: 0;
  border-radius: 999px;
  color: var(--white);
  background: linear-gradient(180deg, #168cff, var(--blue-dark));
  box-shadow: 0 12px 28px rgba(10, 132, 255, 0.24);
  font: inherit;
  font-size: 16px;
  font-weight: 720;
  cursor: pointer;
}

.primary-button:hover {
  transform: translateY(-1px);
}

.primary-button.dark {
  background: var(--ink);
  box-shadow: none;
}

.secondary-link {
  color: var(--blue-dark);
  font-size: 16px;
  font-weight: 650;
}

.fineprint {
  max-width: 540px;
  margin-top: 22px;
  color: rgba(17, 19, 24, 0.52);
  font-size: 13px;
  line-height: 1.5;
}

.hero-visual {
  min-height: 610px;
}

.sundown {
  position: absolute;
  inset: 4% 3% 1%;
  border-radius: 34px;
  background:
    radial-gradient(circle at 64% 20%, rgba(10, 132, 255, 0.12), transparent 30%),
    radial-gradient(circle at 18% 78%, rgba(87, 185, 157, 0.13), transparent 28%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(242, 247, 251, 0.92) 58%, rgba(232, 238, 244, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.96);
  box-shadow: 0 28px 88px rgba(33, 45, 61, 0.13);
}

.book-stage {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 610px;
  perspective: 1100px;
}

.book-cover {
  position: relative;
  width: min(58vw, 330px);
  margin: 0;
  padding: 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 20px 34px 76px rgba(33, 45, 61, 0.2);
  transform: rotateY(-7deg) rotateZ(-2deg);
  backdrop-filter: blur(14px);
}

.book-cover img {
  width: 100%;
  border-radius: 8px;
  box-shadow: inset 10px 0 18px rgba(0, 0, 0, 0.18);
}

.mike-card {
  position: absolute;
  right: clamp(0px, 2vw, 28px);
  bottom: 52px;
  width: 176px;
  margin: 0;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 48px rgba(33, 45, 61, 0.16);
  backdrop-filter: blur(16px);
}

.mike-card img {
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 13px;
}

.text-stack a,
.buy-links a,
.terms-strip a,
.mock-form a {
  color: var(--blue-dark);
  text-decoration: none;
}

.text-stack a:hover,
.buy-links a:hover,
.terms-strip a:hover,
.mock-form a:hover {
  text-decoration: underline;
}

.proof-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 clamp(18px, 5vw, 72px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--line);
}

.proof-band div {
  padding: 26px clamp(18px, 3vw, 34px);
  background: rgba(255, 255, 255, 0.82);
}

.proof-band span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 13px;
}

.proof-band strong {
  display: block;
  font-size: clamp(20px, 2.2vw, 30px);
  line-height: 1.08;
}

.proof-band small {
  display: block;
  margin-top: 9px;
  color: rgba(17, 19, 24, 0.58);
  font-size: 14px;
  font-weight: 680;
}

.section {
  padding: clamp(72px, 10vw, 132px) clamp(18px, 5vw, 72px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.78fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
}

.text-stack {
  color: rgba(17, 19, 24, 0.68);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.45;
}

.text-stack p:last-child {
  margin-bottom: 0;
}

.buy-links {
  padding-top: 10px;
  font-weight: 680;
}

.video-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.86)),
    #f7f7f4;
}

.video-frame {
  overflow: hidden;
  max-width: 980px;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(17, 19, 24, 0.1);
  border-radius: 8px;
  background: #111318;
  box-shadow: 0 22px 62px rgba(17, 19, 24, 0.18);
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  display: block;
}

.skill-question {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 0.78fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
  background: #ffffff;
}

.question-panel {
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid rgba(17, 19, 24, 0.1);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(247, 247, 244, 0.72), #ffffff);
}

.question-panel .question {
  color: var(--ink);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 790;
  line-height: 1.08;
}

.question-panel p:not(.question) {
  color: rgba(17, 19, 24, 0.66);
  font-size: 17px;
  line-height: 1.5;
}

.cards {
  background: #ffffff;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 38px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  min-height: 260px;
  padding: 30px;
  border: 1px solid rgba(17, 19, 24, 0.1);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(247, 247, 244, 0.7), #ffffff);
}

.card-number {
  display: block;
  margin-bottom: 54px;
  color: var(--blue-dark);
  font-weight: 800;
}

.card p,
.series p {
  color: rgba(17, 19, 24, 0.66);
  font-size: 17px;
  line-height: 1.5;
}

.series {
  padding: clamp(72px, 10vw, 130px) clamp(18px, 5vw, 72px);
  background:
    radial-gradient(circle at 76% 18%, rgba(10, 132, 255, 0.09), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(239, 244, 249, 0.92)),
    #f4f7fb;
}

.series-inner {
  max-width: 820px;
}

.series h2 {
  margin-bottom: 22px;
}

.series p {
  max-width: 710px;
  margin-bottom: 30px;
}

.terms-strip {
  padding: 24px clamp(18px, 5vw, 72px);
  border-top: 1px solid rgba(17, 19, 24, 0.08);
  background: #ffffff;
}

.terms-strip p {
  max-width: 960px;
  margin-bottom: 0;
  color: rgba(17, 19, 24, 0.68);
  font-size: 15px;
  line-height: 1.5;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px clamp(18px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: rgba(17, 19, 24, 0.56);
  font-size: 12px;
  line-height: 1.4;
}

.footer p {
  max-width: 520px;
  margin-bottom: 0;
}

.optin-dialog {
  width: min(92vw, 520px);
  padding: 34px;
  border: 1px solid rgba(17, 19, 24, 0.12);
  border-radius: 24px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.optin-dialog::backdrop {
  background: rgba(17, 19, 24, 0.28);
  backdrop-filter: blur(5px);
}

.optin-dialog h2 {
  margin-bottom: 14px;
  font-size: 34px;
  line-height: 1.05;
}

.optin-dialog p:not(.eyebrow) {
  color: rgba(17, 19, 24, 0.66);
  line-height: 1.5;
}

.mock-form {
  display: grid;
  gap: 14px;
}

.mock-form label {
  display: grid;
  gap: 7px;
  color: rgba(17, 19, 24, 0.72);
  font-size: 14px;
  font-weight: 700;
}

.mock-form input,
.mock-form textarea {
  width: 100%;
  border: 1px solid rgba(17, 19, 24, 0.14);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--ink);
  background: rgba(247, 247, 244, 0.78);
  font: inherit;
  font-size: 15px;
}

.mock-form textarea {
  resize: vertical;
}

.mock-form p {
  margin-bottom: 4px;
  color: rgba(17, 19, 24, 0.62);
  font-size: 13px;
  line-height: 1.45;
}

.close-button {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  color: rgba(17, 19, 24, 0.62);
  background: rgba(17, 19, 24, 0.07);
  font-size: 25px;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .nav {
    display: none;
  }

  .hero,
  .split,
  .skill-question {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 560px;
  }

  .proof-band,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    display: block;
  }

  .footer p + p {
    margin-top: 10px;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 12px 16px;
  }

  .brand img {
    width: 148px;
  }

  .header-cta {
    min-width: 68px;
    padding-inline: 13px;
  }

  h1 {
    font-size: 52px;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-visual,
  .book-stage {
    min-height: 470px;
  }

  .sundown {
    inset: 0;
    border-radius: 28px;
  }

  .book-cover {
    width: min(76vw, 280px);
  }

  .mike-card {
    right: 12px;
    bottom: 18px;
    width: 132px;
  }

  .proof-band {
    border-radius: 18px;
  }

  .card {
    min-height: auto;
  }
}