:root {
  --bg: #edf1e8;
  --bg-deep: #101510;
  --surface: rgba(255, 255, 251, 0.82);
  --surface-strong: rgba(255, 255, 251, 0.95);
  --surface-dark: rgba(16, 21, 16, 0.94);
  --line: rgba(26, 34, 28, 0.12);
  --line-strong: rgba(224, 234, 216, 0.26);
  --text: #151a16;
  --text-muted: #4d564f;
  --text-inverse: #f7f8f2;
  --accent: #3f751f;
  --accent-strong: #14210f;
  --accent-soft: #79bb31;
  --accent-soft-strong: #4f8c22;
  --shadow-lg: 0 30px 80px rgba(15, 18, 15, 0.18);
  --shadow-md: 0 18px 50px rgba(15, 18, 15, 0.12);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "Manrope", system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(121, 187, 49, 0.18), transparent 26%),
    radial-gradient(circle at 85% 10%, rgba(16, 21, 16, 0.15), transparent 30%),
    linear-gradient(180deg, #f7f8f2 0%, #edf1e8 34%, #e3e8dd 100%);
}

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

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(63, 117, 31, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 117, 31, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.32), transparent 85%);
  z-index: -1;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 18px 0;
  backdrop-filter: blur(18px);
  background: linear-gradient(180deg, rgba(247, 248, 242, 0.92), rgba(247, 248, 242, 0.74));
  border-bottom: 1px solid rgba(26, 34, 28, 0.06);
  transition:
    padding 0.28s ease,
    background-color 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease;
}

.site-header.is-scrolled {
  padding: 10px 0;
  background: linear-gradient(180deg, rgba(247, 248, 242, 0.97), rgba(247, 248, 242, 0.9));
  border-bottom-color: rgba(26, 34, 28, 0.1);
  box-shadow: 0 12px 30px rgba(15, 18, 15, 0.09);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.brand-text {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.header-book {
  width: 0;
  opacity: 0;
  margin-right: 0;
  overflow: hidden;
  border-radius: 12px;
  transform: translateY(6px) scale(0.86);
  transform-origin: left center;
  box-shadow: 0 14px 28px rgba(17, 43, 34, 0.12);
  transition:
    width 0.28s ease,
    opacity 0.28s ease,
    margin-right 0.28s ease,
    transform 0.28s ease;
}

.header-book img {
  display: block;
  width: 42px;
  height: auto;
  border-radius: 12px;
}

.site-header.is-scrolled .header-book {
  width: 42px;
  opacity: 1;
  margin-right: 12px;
  transform: translateY(0) scale(1);
}

.brand-kicker,
.section-label,
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  font-weight: 800;
}

.brand-kicker,
.section-label,
.eyebrow {
  color: var(--accent);
}

.brand-title {
  font-family: "Fraunces", Georgia, serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.03em;
  transition: font-size 0.28s ease;
}

.brand-author {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: opacity 0.28s ease, transform 0.28s ease;
}

.site-header.is-scrolled .brand-title {
  font-size: 20px;
}

.site-header.is-scrolled .brand-author {
  opacity: 0.78;
  transform: translateY(-1px);
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  color: var(--text-muted);
}

.site-nav a {
  text-decoration: none;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  width: 52px;
  min-height: 52px;
  padding: 0;
  border: 1px solid rgba(33, 73, 58, 0.14);
  border-radius: 18px;
  background: rgba(255, 251, 244, 0.8);
  color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(17, 43, 34, 0.12);
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}

.site-header.menu-open .nav-toggle {
  background: rgba(33, 73, 58, 0.08);
  border-color: rgba(33, 73, 58, 0.22);
}

.site-header.menu-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header.menu-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header.menu-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 800;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    border-color 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(33, 73, 58, 0.3);
  outline-offset: 3px;
}

.button-primary {
  color: var(--text-inverse);
  background: linear-gradient(180deg, #5a9d25 0%, #182313 100%);
  box-shadow: 0 18px 40px rgba(54, 103, 27, 0.24);
}

.button-secondary {
  color: var(--accent);
  background: rgba(255, 251, 244, 0.72);
  border-color: rgba(33, 73, 58, 0.12);
}

.button.is-disabled {
  cursor: not-allowed;
  opacity: 0.62;
  pointer-events: none;
}

.button-header {
  flex-shrink: 0;
}

.mobile-nav-panel {
  display: none;
}

.hero {
  padding: 48px 0 16px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 430px);
  gap: 32px;
  align-items: stretch;
}

.hero-copy,
.problem-card,
.pillar-card,
.audience-card,
.contact-card,
.closing-card,
.chapter-group,
.faq-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  box-shadow: var(--shadow-lg);
}

.hero-copy,
.contact-card,
.closing-card {
  border-radius: var(--radius-xl);
}

.hero-copy {
  padding: clamp(28px, 4vw, 52px);
}

.hero-copy::after,
.closing-card::after {
  content: "";
  position: absolute;
  inset: auto -12% -32% auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(199, 166, 107, 0.18), transparent 70%);
  pointer-events: none;
}

.hero-title,
.section-heading h2,
.audience-card h2,
.closing-card h2 {
  font-family: "Fraunces", Georgia, serif;
  letter-spacing: -0.04em;
}

.hero-title {
  margin: 16px 0 16px;
  max-width: 10ch;
  font-size: clamp(40px, 6.6vw, 68px);
  line-height: 0.96;
}

.hero-subtitle {
  margin: 0 0 18px;
  max-width: 720px;
  font-size: clamp(20px, 2.2vw, 30px);
  line-height: 1.22;
  color: var(--text-muted);
  font-weight: 600;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0;
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(33, 73, 58, 0.12);
  background: rgba(255, 251, 244, 0.7);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

.hero-body {
  display: grid;
  gap: 16px;
  max-width: 720px;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.72;
}

.hero-body p {
  margin: 0;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.hero-points,
.check-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero-points li,
.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text-muted);
  line-height: 1.55;
}

.hero-points li::before,
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent-soft), var(--accent-soft-strong));
  box-shadow: 0 0 0 5px rgba(199, 166, 107, 0.16);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 620px;
  padding: 0;
  overflow: visible;
}

.hero-visual::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(88%, 440px);
  height: min(82%, 560px);
  transform: translate(-50%, -50%);
  border-radius: 44px;
  background:
    radial-gradient(circle at 50% 40%, rgba(255, 252, 246, 0.96), rgba(255, 252, 246, 0.62) 44%, rgba(255, 252, 246, 0.16) 68%, transparent 82%);
  filter: blur(4px);
  pointer-events: none;
}

.hero-visual::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 44px;
  width: 44%;
  height: 24px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 31, 27, 0.16), transparent 72%);
  filter: blur(10px);
  pointer-events: none;
}

.book-stage {
  position: relative;
  width: 100%;
  max-width: 360px;
  padding: 0;
}

.book-frame {
  position: relative;
  z-index: 2;
  width: min(100%, 330px);
  margin: 0 auto;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.book-frame img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow:
    0 18px 32px rgba(18, 28, 24, 0.12),
    0 34px 60px rgba(18, 28, 24, 0.08);
}

.section {
  padding: 40px 0;
  scroll-margin-top: 96px;
}

.section-contrast {
  padding: 52px 0;
}

.section-toolkit {
  padding-top: 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading h2,
.audience-card h2,
.closing-card h2 {
  margin: 12px 0 22px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1;
}

.section-heading p,
.audience-card p,
.closing-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.problem-card,
.pillar-card {
  border-radius: var(--radius-lg);
  padding: 24px;
  min-height: 220px;
}

.problem-card h3,
.pillar-card h3,
.chapter-group h3 {
  margin: 0 0 12px;
  font-family: "Fraunces", Georgia, serif;
  font-size: 28px;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.problem-card p,
.pillar-card p,
.chapter-group-header p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.65;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.chapter-groups {
  display: grid;
  gap: 20px;
}

.chapter-group {
  border-radius: var(--radius-lg);
  padding: 24px;
}

.chapter-group-header {
  max-width: 720px;
  margin-bottom: 16px;
}

.chapter-list {
  display: grid;
  gap: 12px;
}

.chapter-item,
.faq-item {
  border: 1px solid rgba(30, 51, 42, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 251, 244, 0.7);
  box-shadow: none;
}

.chapter-item summary,
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  font-weight: 800;
}

.chapter-item summary::-webkit-details-marker,
.faq-item summary::-webkit-details-marker {
  display: none;
}

.chapter-item summary::after,
.faq-item summary::after {
  content: "+";
  margin-left: auto;
  color: var(--accent);
  font-size: 24px;
  line-height: 1;
}

.chapter-item[open] summary::after,
.faq-item[open] summary::after {
  content: "−";
}

.chapter-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  flex-shrink: 0;
  background: rgba(33, 73, 58, 0.08);
  color: var(--accent);
}

.chapter-title {
  font-size: 18px;
  line-height: 1.35;
}

.chapter-item p,
.faq-item p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--text-muted);
  line-height: 1.65;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.resource-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}

.testimonial-heading {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.testimonial-carousel {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
}

.testimonial-viewport {
  overflow: hidden;
  border-radius: 28px;
  box-shadow: var(--shadow-lg);
}

.testimonial-track {
  display: flex;
  transition: transform 0.32s ease;
  will-change: transform;
}

.testimonial-slide {
  position: relative;
  flex: 0 0 100%;
  padding: clamp(22px, 3vw, 30px);
  border-radius: 28px;
  border: 1px solid rgba(33, 73, 58, 0.12);
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.2), transparent 30%),
    linear-gradient(180deg, rgba(255, 251, 244, 0.96), rgba(247, 239, 227, 0.94));
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.testimonial-stars svg {
  width: 18px;
  height: 18px;
  fill: #d98a1c;
}

.testimonial-slide h3 {
  margin: 0;
  max-width: 20ch;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.testimonial-excerpt {
  margin: 16px 0 0;
  max-width: 68ch;
  color: var(--text);
  font-size: clamp(16px, 1.45vw, 19px);
  line-height: 1.58;
  font-weight: 500;
  font-style: italic;
}

.testimonial-meta {
  margin: 14px 0 0;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.testimonial-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid rgba(33, 73, 58, 0.14);
  border-radius: 50%;
  background: rgba(255, 251, 244, 0.88);
  color: var(--accent);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    opacity 0.2s ease;
}

.testimonial-nav span {
  font-size: 24px;
  line-height: 1;
}

.testimonial-nav:hover,
.testimonial-nav:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(17, 43, 34, 0.12);
}

.testimonial-nav:disabled {
  opacity: 0.38;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}

.testimonial-dot {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(33, 73, 58, 0.18);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background-color 0.2s ease;
}

.testimonial-dot.is-active {
  background: var(--accent);
  transform: scale(1.08);
}

.testimonial-caption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

.resource-card {
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(33, 73, 58, 0.12);
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255, 250, 242, 0.96), rgba(248, 241, 229, 0.94));
  box-shadow: var(--shadow-md);
}

.resource-card-featured {
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.22), transparent 34%),
    linear-gradient(180deg, rgba(255, 250, 242, 0.98), rgba(245, 237, 223, 0.96));
}

.resource-card h3 {
  margin: 12px 0 12px;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.resource-card p {
  margin: 0;
}

.resource-card p:last-of-type {
  margin: 0;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
}

.resource-card .button {
  margin-top: 20px;
}

.resource-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.resource-actions .button {
  margin-top: 0;
  flex: 1 1 170px;
  justify-content: center;
  text-align: center;
}

.audience-card {
  border-radius: var(--radius-lg);
  padding: 28px;
}

.audience-card-muted {
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.12), transparent 34%),
    linear-gradient(180deg, rgba(255, 247, 235, 0.92), rgba(250, 241, 226, 0.92));
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(28px, 4vw, 42px);
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.16), transparent 30%),
    linear-gradient(180deg, rgba(255, 251, 244, 0.96), rgba(247, 239, 227, 0.94));
}

.related-book {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 42px);
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid rgba(33, 73, 58, 0.12);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(121, 187, 49, 0.14), transparent 32%),
    linear-gradient(180deg, rgba(255, 255, 251, 0.94), rgba(238, 244, 232, 0.92));
  box-shadow: var(--shadow-md);
}

.related-book-cover {
  display: block;
  overflow: hidden;
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(15, 18, 15, 0.18);
  transform: rotate(-1.5deg);
  transition:
    transform 0.22s ease,
    box-shadow 0.22s ease;
}

.related-book-cover:hover,
.related-book-cover:focus-visible {
  transform: translateY(-2px) rotate(-1deg);
  box-shadow: 0 24px 52px rgba(15, 18, 15, 0.22);
}

.related-book-cover img {
  width: 100%;
  height: auto;
}

.related-book-copy h2 {
  margin: 10px 0 12px;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.related-book-copy p:not(.section-label) {
  margin: 0;
  max-width: 62ch;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
}

.related-book-copy .button {
  margin-top: 20px;
}

.contact-copy {
  max-width: 720px;
}

.contact-copy h2 {
  margin: 12px 0 18px;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.contact-copy p {
  margin: 0;
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
}

.author-bio {
  display: grid;
  gap: 14px;
}

.contact-links {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.contact-email {
  display: inline-block;
  color: var(--accent);
  font-size: 18px;
  font-weight: 800;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  word-break: break-word;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 0 0 260px;
}

.contact-button {
  width: 100%;
  min-width: 0;
  text-align: center;
}

.check-list-muted li::before {
  background: linear-gradient(180deg, #8b5b4e, #603d35);
  box-shadow: 0 0 0 5px rgba(139, 91, 78, 0.12);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.closing-card {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(28px, 4vw, 42px);
  background:
    radial-gradient(circle at top right, rgba(199, 166, 107, 0.18), transparent 30%),
    linear-gradient(180deg, rgba(255, 251, 244, 0.96), rgba(250, 244, 233, 0.92));
}

.closing-card h2 span {
  display: block;
  color: var(--accent);
}

.closing-card em {
  font-style: italic;
}

.site-footer {
  padding: 0 0 120px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 10px;
  color: var(--text-muted);
  font-size: 14px;
}

.footer-note {
  text-align: right;
}

.mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: none;
  gap: 10px;
  padding:
    12px
    max(18px, env(safe-area-inset-right, 0px))
    calc(12px + env(safe-area-inset-bottom, 0px))
    max(18px, env(safe-area-inset-left, 0px));
  border-radius: 24px 24px 0 0;
  background: rgba(248, 242, 232, 0.92);
  border: 1px solid rgba(30, 51, 42, 0.1);
  border-bottom: 0;
  box-shadow: 0 20px 40px rgba(15, 28, 22, 0.18);
  backdrop-filter: blur(18px);
}

.mobile-cta .button {
  flex: 1;
  min-height: 48px;
}

.closing-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  flex: 0 0 260px;
  margin-top: 20px;
}

.closing-actions .button {
  width: 100%;
  min-width: 0;
  text-align: center;
}

@media (max-width: 1080px) {
  .hero-grid,
  .problem-grid,
  .pillar-grid,
  .audience-grid,
  .resource-grid,
  .related-book {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 500px;
    padding: 8px 0;
  }

  .book-stage {
    max-width: 320px;
  }

  .problem-card,
  .pillar-card {
    min-height: 0;
  }

  .closing-card {
    flex-direction: column;
    align-items: start;
    justify-content: flex-start;
    gap: 0;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-actions {
    width: 100%;
    flex: none;
    margin-top: 20px;
  }

  .closing-actions {
    width: 100%;
    flex: none;
    margin-top: 20px;
  }

  .related-book-cover {
    width: min(180px, 46vw);
  }

}

@media (max-width: 860px) {
  .site-nav,
  .button-header {
    display: none;
  }

  .header-inner {
    flex-wrap: wrap;
    row-gap: 14px;
  }

  .brand {
    flex: 1 1 auto;
    min-width: 0;
  }

  .brand-text {
    min-width: 0;
  }

  .brand-title,
  .brand-author {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header {
    padding: 14px 0;
  }

  .site-header.is-scrolled {
    padding: 10px 0;
  }

  .site-header.menu-open,
  .site-header.menu-open.is-scrolled {
    background: linear-gradient(180deg, rgba(248, 242, 232, 0.98), rgba(248, 242, 232, 0.94));
    box-shadow: 0 12px 30px rgba(20, 31, 27, 0.1);
  }

  .site-header.menu-open .mobile-nav-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
    flex: 1 0 100%;
    padding: 16px;
    border: 1px solid rgba(30, 51, 42, 0.08);
    border-radius: 24px;
    background: rgba(255, 251, 244, 0.86);
    box-shadow: 0 20px 40px rgba(15, 28, 22, 0.12);
  }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .mobile-nav a {
    padding: 14px 16px;
    border-radius: 16px;
    text-decoration: none;
    color: var(--text);
    background: rgba(255, 251, 244, 0.72);
    border: 1px solid rgba(30, 51, 42, 0.08);
  }

  .mobile-nav-button {
    width: 100%;
    min-height: 50px;
  }

  .hero {
    padding-top: 28px;
  }

  .mobile-cta {
    display: flex;
  }

  .site-footer {
    padding-bottom: calc(108px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 36px), var(--max-width));
  }

  .brand-title {
    font-size: clamp(18px, 5.6vw, 21px);
  }

  .brand-author {
    font-size: 12px;
  }

  .hero-copy,
  .hero-visual,
  .chapter-group,
  .audience-card,
  .contact-card,
  .closing-card,
  .resource-card,
  .testimonial-slide {
    padding: 22px;
  }

  .header-book img {
    width: 34px;
  }

  .site-header.is-scrolled .header-book {
    width: 34px;
    margin-right: 10px;
  }

  .hero-title {
    font-size: clamp(38px, 14vw, 58px);
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .hero-body,
  .section-heading p,
  .problem-card p,
  .pillar-card p,
  .chapter-group-header p,
  .chapter-item p,
  .faq-item p,
  .contact-copy p {
    font-size: 16px;
  }

  .contact-copy h2 {
    font-size: clamp(30px, 11vw, 46px);
  }

  .hero-actions,
  .closing-actions {
    flex-direction: column;
  }

  .testimonial-carousel {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .testimonial-nav {
    width: 100%;
    height: 46px;
    border-radius: 999px;
  }

  .testimonial-nav-prev {
    order: 2;
  }

  .testimonial-viewport {
    order: 1;
  }

  .testimonial-nav-next {
    order: 3;
  }

  .testimonial-slide h3 {
    max-width: none;
  }

  .testimonial-excerpt {
    font-size: 18px;
  }

  .button {
    width: 100%;
  }

  .hero-visual {
    min-height: 400px;
  }

  .book-stage {
    display: flex;
    align-items: center;
  }

  .book-frame {
    width: min(100%, 280px);
  }

  .chapter-item summary,
  .faq-item summary {
    padding: 16px;
  }

  .chapter-item p,
  .faq-item p {
    padding: 0 16px 16px;
  }

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

  .footer-note {
    text-align: left;
  }
}