:root {
  --bg: #060a12;
  --bg-soft: #0a121f;
  --panel: #0d1a2b;
  --panel-strong: #0e2338;
  --border: rgba(94, 197, 245, .18);
  --border-strong: rgba(94, 197, 245, .38);
  --text: #eaf2fb;
  --text-muted: #93a1ba;
  --accent: #3ec7f5;
  --accent-2: #1f8fd1;
  --accent-soft: rgba(62, 199, 245, .14);
  --on-accent: #04121c;
  --warn: #ff9770;
  --warn-soft: rgba(255, 151, 112, .12);
  --shadow: 0 26px 60px rgba(0, 0, 0, .55);
  --glow: 0 18px 46px rgba(62, 199, 245, .14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  position: relative;
  font-family: "Be Vietnam Pro", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 18%, rgba(62, 199, 245, .14), transparent 38%),
    radial-gradient(circle at 88% 8%, rgba(31, 143, 209, .12), transparent 40%),
    radial-gradient(circle at 82% 78%, rgba(62, 199, 245, .10), transparent 42%),
    var(--bg);
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(rgba(148, 200, 235, .35) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .25;
  mask-image: radial-gradient(circle at 50% 0%, rgba(0, 0, 0, .9), transparent 75%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

h1, h2, h3, h4 {
  margin: 0 0 14px;
  font-family: "Sora", "Be Vietnam Pro", sans-serif;
  color: var(--text);
  line-height: 1.22;
  text-wrap: balance;
}

p {
  margin: 0;
}

.hl {
  color: var(--accent);
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  min-height: 68px;
  padding: 10px max(16px, calc((100vw - 1160px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(6, 10, 18, .82);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--text);
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(160deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(62, 199, 245, .3);
}

.topbar-cta {
  min-height: 44px;
  padding: 10px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: linear-gradient(160deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(62, 199, 245, .3);
  transition: transform .15s ease, box-shadow .15s ease;
}

.topbar-cta:hover,
.topbar-cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(62, 199, 245, .4);
}

/* Buttons */
.btn {
  min-height: 54px;
  padding: 14px 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(62, 199, 245, .55);
  outline-offset: 3px;
}

.btn-primary {
  color: var(--on-accent);
  background: linear-gradient(160deg, #6fe0ff, var(--accent-2));
  box-shadow: 0 18px 36px rgba(62, 199, 245, .32);
}

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, .03);
  border-color: var(--border-strong);
}

.btn-submit {
  width: 100%;
  color: var(--on-accent);
  background: linear-gradient(160deg, #6fe0ff, var(--accent-2));
  box-shadow: 0 18px 34px rgba(62, 199, 245, .3);
}

.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Hero */
.hero {
  padding: 56px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 460px);
  gap: 48px;
  align-items: start;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(30px, 4.4vw, 46px);
}

.subhead {
  max-width: 620px;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: clamp(16px, 1.6vw, 18.5px);
}

.pull-quote {
  max-width: 600px;
  margin: 22px 0 24px;
  padding: 16px 20px;
  border-left: 3px solid var(--accent);
  background: var(--panel);
  border-radius: 0 10px 10px 0;
  color: #bfe7f9;
  font-style: italic;
  font-size: 15.5px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 26px;
}

.trust-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  list-style: none;
}

.trust-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 14.5px;
}

.trust-list .icon {
  color: var(--accent);
}

/* Cover mock */
.cover-wrap {
  position: sticky;
  top: 88px;
}

.cover-mock {
  padding: 40px 28px;
  background: linear-gradient(175deg, var(--panel-strong), var(--panel));
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow), var(--glow);
  text-align: center;
}

.cover-mock .rule {
  width: 64px;
  height: 2px;
  margin: 0 auto 20px;
  background: var(--accent);
  opacity: .6;
}

.cover-mock .rule.bottom {
  margin: 20px auto 0;
}

.cover-mock h2 {
  margin-bottom: 10px;
  font-size: clamp(20px, 2.4vw, 25px);
  letter-spacing: .01em;
  text-transform: uppercase;
}

.cover-mock .cover-sub {
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.5;
}

.cover-mock .cover-quote {
  margin-top: 26px;
  color: var(--accent);
  font-style: italic;
  font-size: 12.5px;
  line-height: 1.6;
}

.price-card {
  margin-top: 18px;
  padding: 22px;
  background: linear-gradient(165deg, #0d2438, #071018);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  color: var(--text);
  box-shadow: var(--shadow), var(--glow);
}

.price-card .price-label {
  margin: 0 0 4px;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
}

.price-card .price-value {
  margin: 0 0 4px;
  font-family: "Sora", sans-serif;
  font-size: 34px;
  font-weight: 700;
  color: var(--accent);
}

.price-card .price-note {
  margin: 0 0 16px;
  color: var(--text-muted);
  font-size: 13px;
}

.price-card .btn-primary {
  width: 100%;
}

/* Sections */
.section {
  padding: 68px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 700px;
  margin: 0 auto 40px;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(26px, 3.4vw, 36px);
}

.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}

/* Audience */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.audience-card {
  padding: 24px 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
  transition: border-color .2s ease, transform .2s ease;
}

.audience-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.audience-card .icon-wrap {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--accent-soft);
  border: 1px solid var(--border);
  color: var(--accent);
}

.audience-card h3 {
  margin-bottom: 6px;
  font-size: 16.5px;
}

.audience-card p {
  color: var(--text-muted);
  font-size: 14px;
}

/* Benefits */
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.benefit {
  padding: 24px;
  display: flex;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.benefit .num {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-weight: 800;
  font-family: "Sora", sans-serif;
}

.benefit h3 {
  margin-bottom: 6px;
  font-size: 17px;
}

.benefit p {
  color: var(--text-muted);
  font-size: 14.5px;
  margin: 0;
}

/* Chapters */
.chapters {
  background: var(--bg-soft);
}

.chapter-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 780px;
  margin: 0 auto;
}

.chapter-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 16px 20px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.chapter-list .chap-no {
  flex: 0 0 auto;
  font-family: "Sora", sans-serif;
  font-weight: 700;
  color: var(--accent);
  font-size: 15px;
}

.chapter-list .chap-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.chapter-list .chap-desc {
  color: var(--text-muted);
  font-size: 13.5px;
}

/* Flipbook */
.flipbook-frame {
  padding: 12px;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow), var(--glow);
}

.fp-iframe {
  width: 100%;
  height: min(78vh, 640px);
  min-height: 460px;
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-soft);
}

.preview-cta {
  margin-top: 22px;
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--panel);
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
}

.preview-cta p {
  margin: 0;
  color: var(--text);
  font-weight: 700;
}

/* Order section */
.order-section {
  background: var(--bg-soft);
}

.order-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.order-summary {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.order-summary h3 {
  font-size: 20px;
  margin-bottom: 14px;
}

.included-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.included-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text);
}

.included-list .icon {
  color: var(--accent);
}

.order-price {
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}

.order-price .price-value {
  font-family: "Sora", sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
}

.order-price .price-note {
  color: var(--text-muted);
  font-size: 13.5px;
}

.order-form {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow), var(--glow);
}

.order-form h3 {
  font-size: 20px;
  margin-bottom: 4px;
}

.form-kicker {
  margin-bottom: 18px;
  color: var(--text-muted);
  font-size: 14px;
}

.field {
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 7px;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 50px;
  padding: 13px 14px;
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}

input::placeholder {
  color: rgba(147, 161, 186, .55);
}

.error {
  min-height: 18px;
  margin-top: 5px;
  display: block;
  color: var(--warn);
  font-size: 13px;
}

.privacy {
  margin: 14px 0 0;
  color: var(--text-muted);
  font-size: 12.5px;
}

/* Final CTA */
.final-cta {
  padding: 60px 0;
  background: linear-gradient(160deg, #0c2338, #060a12 65%);
}

.final-cta h2 {
  color: var(--text);
}

.final-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.final-inner p {
  max-width: 640px;
  margin-bottom: 0;
  color: var(--text-muted);
}

/* Footer */
.footer {
  padding: 24px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* Thank-you page */
.thanks-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px 0;
}

.thanks-shell {
  width: min(760px, calc(100% - 32px));
}

.thanks-card {
  padding: clamp(24px, 5vw, 44px);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow), var(--glow);
}

.success-mark {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: var(--on-accent);
  background: linear-gradient(160deg, var(--accent), var(--accent-2));
  border-radius: 999px;
}

.success-mark svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.order-code {
  display: inline-block;
  margin: 6px 0 20px;
  padding: 8px 14px;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  font-family: "Sora", sans-serif;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .04em;
}

.bank-panel {
  margin-top: 8px;
  padding: 20px;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 22px;
  align-items: center;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.qr-box {
  width: 160px;
  height: 160px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 10px;
  background: #ffffff;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 12px;
  overflow: hidden;
}

.qr-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.bank-rows {
  display: grid;
  gap: 8px;
}

.bank-rows .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 14.5px;
}

.bank-rows .row span:first-child {
  color: var(--text-muted);
}

.bank-rows .row span:last-child {
  font-weight: 800;
  color: var(--text);
}

.notice {
  margin-top: 18px;
  padding: 14px 16px;
  background: var(--warn-soft);
  border: 1px solid rgba(255, 151, 112, .35);
  border-radius: 10px;
  color: var(--warn);
  font-size: 13.5px;
}

.back-link {
  min-height: 44px;
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  font-weight: 800;
}

@media (max-width: 960px) {
  .hero-grid,
  .order-grid {
    grid-template-columns: 1fr;
  }

  .cover-wrap {
    position: static;
    max-width: 460px;
  }

  .audience-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .final-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .bank-panel {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .bank-rows .row {
    justify-content: center;
    gap: 6px;
  }
}

@media (max-width: 620px) {
  .audience-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions .btn,
  .final-inner .btn {
    width: 100%;
  }

  .fp-iframe {
    min-height: 380px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}