/* ==========================================================================
   THE FRUGAL HOME SAVINGS MANUAL — OFFICIAL STYLESHEET
   Vanilla CSS3 | Practical Homestead & Timeless Household Knowledge Aesthetic
   100% Mobile Responsive | Zero Horizontal Overflow | Zero Dependencies
   ========================================================================== */

/* --- 1. CSS Custom Properties / Design Tokens --- */
:root {
  /* Color Palette: Practical Homestead, Deep Forest & Warm Linen */
  --color-bg: #FBF8F1;          /* Warm Handmade Linen / Cream Off-White */
  --color-bg-alt: #F3EDE2;      /* Natural Oat / Soft Wheat Neutral */
  --color-surface: #FFFFFF;     /* Pure Crisp White for Cards */
  --color-surface-hover: #FDFBF7;
  --color-surface-muted: #EAE2D3; /* Muted Linen / Parchment Tone */

  --color-text-main: #1D2420;    /* Deep Woodland Charcoal Espresso */
  --color-text-body: #3B4640;    /* Warm Deep Slate Timber */
  --color-text-muted: #647269;   /* Muted Sage Moss Slate */
  --color-text-light: #8E9C93;

  --color-accent: #24523B;       /* Deep Forest Craftsman Evergreen */
  --color-accent-hover: #183A29; /* Dark Woodland Pine */
  --color-accent-subtle: #EBF3EE;/* Gentle Botanical Mist */

  --color-amber: #C27E2F;        /* Artisan Brass / Warm Beeswax Amber */
  --color-amber-hover: #A56520;
  --color-amber-subtle: #FAF2E4; /* Candlelit Wheat Glow */

  --color-border: #DED6C7;       /* Natural Linen Border */
  --color-border-light: #ECE5D8;
  --color-border-focus: #24523B;

  --color-danger-subtle: #FDF0ED;
  --color-danger-border: #F0C4B8;
  --color-danger-text: #963826;

  /* Typography */
  --font-serif: 'Newsreader', 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Craftsman Shadows */
  --shadow-sm: 0 2px 8px rgba(29, 36, 32, 0.05);
  --shadow-md: 0 8px 24px rgba(29, 36, 32, 0.08);
  --shadow-lg: 0 16px 40px rgba(29, 36, 32, 0.11);
  --shadow-xl: 0 24px 60px rgba(29, 36, 32, 0.15);

  /* Spacing & Layout */
  --container-max: 1160px;
  --container-narrow: 860px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-normal: 0.28s ease;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 2. CSS Reset & Baseline (Strict Anti-Horizontal-Overflow) --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  overflow-x: clip;
  width: 100%;
  max-width: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-body);
  line-height: 1.65;
  font-size: 1.05rem;
  overflow-x: hidden;
  overflow-x: clip;
  width: 100%;
  max-width: 100vw;
  position: relative;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: transparent;
}

/* Skip link for Accessibility */
.skip-link {
  position: absolute;
  top: -60px;
  left: 20px;
  background: var(--color-accent);
  color: #fff;
  padding: 10px 18px;
  z-index: 10000;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
  font-weight: 600;
}
.skip-link:focus {
  top: 15px;
}

/* --- 3. Layout & Containers --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3.5vw, 2.5rem);
  padding-right: clamp(1rem, 3.5vw, 2.5rem);
  box-sizing: border-box;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-top: clamp(3.8rem, 7vw, 6.5rem);
  padding-bottom: clamp(3.8rem, 7vw, 6.5rem);
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-surface {
  background-color: var(--color-surface);
}

/* Section Headers */
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto clamp(2.2rem, 5vw, 3.8rem);
  box-sizing: border-box;
}

.hero-badge-wrap {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 1rem;
  max-width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}

.eyebrow-badge {
  background-color: var(--color-accent-subtle);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(36, 82, 59, 0.2);
}

.eyebrow-amber {
  color: var(--color-amber);
}
.eyebrow-amber .eyebrow-badge {
  background-color: var(--color-amber-subtle);
  border-color: rgba(194, 126, 47, 0.25);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 4vw, 3.1rem);
  line-height: 1.2;
  color: var(--color-text-main);
  font-weight: 700;
  margin-bottom: 1.1rem;
  word-break: break-word;
  overflow-wrap: break-word;
}

.section-subtitle {
  font-size: clamp(1rem, 1.7vw, 1.18rem);
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* --- 4. Top Announcement Bar & Sticky Header --- */
.top-bar {
  background: var(--color-surface-muted);
  font-size: 0.82rem;
  color: var(--color-text-body);
  text-align: center;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.45;
  width: 100%;
  box-sizing: border-box;
}
.top-bar strong {
  color: var(--color-accent);
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(251, 248, 241, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  width: 100%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: clamp(0.75rem, 1.5vw, 1.5rem);
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
  min-width: max-content;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(36, 82, 59, 0.2);
}

.logo-text {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  font-weight: 700;
  color: var(--color-text-main);
  letter-spacing: -0.01em;
  line-height: 1.1;
  white-space: nowrap;
}

.logo-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.3vw, 1.4rem);
  flex-shrink: 1;
}

.nav-desktop a {
  font-size: clamp(0.84rem, 0.95vw, 0.92rem);
  font-weight: 600;
  color: var(--color-text-body);
  white-space: nowrap;
  transition: color var(--transition-fast);
  padding: 0.25rem 0;
}

.nav-desktop a:hover {
  color: var(--color-accent);
}

.header-action {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-cta-desktop {
  padding: 0.65rem 1.15rem;
  font-size: 0.85rem;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  padding: 0.5rem;
  background: transparent;
  color: var(--color-text-main);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* Mobile Drawer Menu */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  width: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 1.5rem 2rem;
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
  box-sizing: border-box;
  max-height: calc(100vh - 72px);
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

/* --- 5. Buttons & Badges --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-align: center;
  line-height: 1.35;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  overflow-wrap: break-word;
  word-break: break-word;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(36, 82, 59, 0.25);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 6px 20px rgba(36, 82, 59, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-main);
  border-color: var(--color-border);
  background-color: var(--color-surface);
}
.btn-secondary:hover {
  background-color: var(--color-bg-alt);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-amber {
  background-color: var(--color-amber);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(194, 126, 47, 0.25);
}
.btn-amber:hover {
  background-color: var(--color-amber-hover);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 1.15rem 2.2rem;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
}

/* --- 6. Hero Section --- */
.hero {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
  background: radial-gradient(circle at top right, var(--color-amber-subtle) 0%, var(--color-bg) 60%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.3rem, 4.5vw, 3.8rem);
  line-height: 1.12;
  color: var(--color-text-main);
  font-weight: 700;
  margin-bottom: 1.3rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.65;
  color: var(--color-text-body);
  margin-bottom: 1.8rem;
}

.hero-checklist {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.25rem;
  margin-bottom: 2.2rem;
}

.hero-check-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.check-icon-circle {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero-footnote {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --- 7. Premium Hardcover Book Mockup --- */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  perspective: 1200px;
}

.book-mockup-wrap {
  position: relative;
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
  padding: 1.5rem 0.5rem;
  display: flex;
  justify-content: center;
}

.book-3d {
  position: relative;
  width: 275px;
  height: 410px;
  background: linear-gradient(145deg, #1C3E2C 0%, #24523B 45%, #173625 100%);
  border-radius: 4px 12px 12px 4px;
  box-shadow: 
    -12px 16px 36px rgba(18, 30, 22, 0.38),
    -2px 6px 12px rgba(18, 30, 22, 0.2),
    inset 0 1px 1px rgba(255, 255, 255, 0.25),
    inset -3px 0 6px rgba(0, 0, 0, 0.3);
  transform: rotateY(-10deg) rotateX(3deg);
  transform-style: preserve-3d;
  transition: transform var(--transition-slow);
  padding: 1.2rem;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.book-3d:hover {
  transform: rotateY(-4deg) rotateX(1deg) translateY(-6px);
  box-shadow: 
    -16px 24px 44px rgba(18, 30, 22, 0.42),
    -3px 8px 16px rgba(18, 30, 22, 0.22);
}

/* Realistic Spine Hinge Crease on Left */
.book-spine {
  position: absolute;
  top: 0;
  left: 0;
  width: 22px;
  height: 100%;
  background: linear-gradient(
    to right,
    rgba(0, 0, 0, 0.45) 0%,
    rgba(0, 0, 0, 0.15) 35%,
    rgba(255, 255, 255, 0.12) 65%,
    rgba(0, 0, 0, 0.35) 95%,
    rgba(255, 255, 255, 0.08) 100%
  );
  border-radius: 4px 0 0 4px;
  pointer-events: none;
  border-right: 1px solid rgba(0, 0, 0, 0.25);
}

/* Page Depth: Realistically Attached Page Block on the Right */
.book-3d::after {
  content: '';
  position: absolute;
  top: 4px;
  right: -10px;
  width: 10px;
  height: calc(100% - 8px);
  background: linear-gradient(
    to right,
    #C5BCA9 0%,
    #EBE4D5 40%,
    #FBF8F0 75%,
    #DAD1C0 100%
  );
  border-radius: 0 3px 3px 0;
  box-shadow: 
    inset 1px 0 2px rgba(0, 0, 0, 0.2),
    2px 4px 8px rgba(18, 30, 22, 0.22);
  transform: skewY(-2deg);
  transform-origin: left top;
  pointer-events: none;
}

/* Page Depth: Bottom Page Block */
.book-3d::before {
  content: '';
  position: absolute;
  bottom: -7px;
  left: 8px;
  width: calc(100% - 12px);
  height: 7px;
  background: linear-gradient(
    to bottom,
    #C5BCA9 0%,
    #ECE5D7 60%,
    #C0B5A1 100%
  );
  border-radius: 0 0 2px 2px;
  transform: skewX(-35deg);
  transform-origin: left top;
  box-shadow: 0 4px 8px rgba(18, 30, 22, 0.25);
  pointer-events: none;
}

/* Woven Gold Silk Bookmark Ribbon */
.book-ribbon {
  position: absolute;
  bottom: -24px;
  right: 48px;
  width: 14px;
  height: 38px;
  background: linear-gradient(to right, #B8732A 0%, #E2A24F 50%, #9C5D1A 100%);
  box-shadow: 1px 4px 8px rgba(0, 0, 0, 0.35);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%);
  z-index: 2;
  pointer-events: none;
}

/* Gold Foil Frame Inset on Cover */
.book-cover-border {
  border: 1.5px solid rgba(226, 201, 143, 0.75);
  outline: 1px solid rgba(226, 201, 143, 0.35);
  outline-offset: -5px;
  padding: 1.25rem 0.9rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  box-sizing: border-box;
  background: radial-gradient(circle at 50% 30%, rgba(36, 82, 59, 0.25) 0%, rgba(18, 42, 28, 0.85) 100%);
  border-radius: 2px;
}

.book-top-emblem {
  margin-bottom: auto;
}

.book-tag {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: #EAD5A5;
  font-weight: 700;
  display: block;
}

.book-title-area {
  margin: auto 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.book-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1.15;
  color: #FFF9ED;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.45rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.book-title-accent {
  color: #F8E6BD;
  font-size: 1.18rem;
  letter-spacing: 0.02em;
}

.book-ornament {
  color: #E2C98F;
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  margin: 0.35rem auto 0.5rem;
  opacity: 0.85;
}

.book-subtitle {
  font-size: 0.72rem;
  line-height: 1.4;
  color: #E3EDE6;
  font-weight: 500;
  max-width: 205px;
  margin: 0 auto;
}

.book-bottom-badge {
  margin-top: auto;
  padding-top: 0.6rem;
}

.book-badge-text {
  display: inline-block;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #EAD5A5;
  font-weight: 700;
  border-top: 1px solid rgba(226, 201, 143, 0.4);
  padding-top: 0.4rem;
}

/* Floating Badges near Mockup */
.mockup-badge-floating {
  position: absolute;
  bottom: 0px;
  right: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.75rem 1.1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mockup-badge-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-amber-subtle);
  color: var(--color-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mockup-badge-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-main);
  line-height: 1.2;
}
.mockup-badge-text span {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* --- 8. Problem / Leak Recognition Section --- */
.leak-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.leak-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}
.leak-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-amber);
}

.leak-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.leak-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--color-amber-subtle);
  color: var(--color-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.leak-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-text-main);
  font-weight: 700;
}

.leak-desc {
  font-size: 0.95rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

.problem-transition-box {
  background: var(--color-bg-alt);
  border: 1.5px solid var(--color-border);
  border-left: 5px solid var(--color-accent);
  padding: 2rem clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius-md);
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.problem-transition-text {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  line-height: 1.35;
  color: var(--color-text-main);
  font-weight: 600;
  font-style: italic;
  margin-bottom: 0.75rem;
}

.problem-transition-sub {
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* --- 9. Inside the Manual / Real Useful Insights Section --- */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.insight-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  position: relative;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}
.insight-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.insight-number {
  font-family: var(--font-serif);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.insight-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-text-main);
  line-height: 1.3;
  margin-bottom: 1rem;
  font-weight: 700;
}

.insight-quote {
  font-size: 0.98rem;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-amber);
  font-style: italic;
}

.insight-explanation {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-top: auto;
}

/* --- 10. Standard Method Format Showcase --- */
.method-format-wrap {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.8rem, 4vw, 3rem);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2.5rem;
}

.method-anatomy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.method-anatomy-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  padding: 1.1rem;
}

.method-anatomy-item strong {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.method-anatomy-item p {
  font-size: 0.9rem;
  color: var(--color-text-body);
  line-height: 1.5;
}

/* --- 11. "What You Get" 12-Asset Feature Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  transition: all var(--transition-fast);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
  border-color: var(--color-accent);
}

.feature-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-text-main);
  margin-bottom: 0.6rem;
  font-weight: 700;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-text-body);
  line-height: 1.55;
}

/* --- 12. 14-Section Contents Accordion --- */
.accordion-controls {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1.25rem;
}

.btn-text-action {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent-subtle);
  border: 1px solid rgba(36, 82, 59, 0.2);
}
.btn-text-action:hover {
  background: var(--color-surface-hover);
}

.contents-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.accordion-item.is-open {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.accordion-header {
  width: 100%;
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  background: transparent;
  transition: background-color var(--transition-fast);
}
.accordion-header:hover {
  background-color: var(--color-surface-hover);
}

.accordion-title-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.accordion-num {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-amber);
  min-width: 28px;
}

.accordion-heading {
  font-family: var(--font-serif);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.25;
}

.accordion-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}
.accordion-item.is-open .accordion-icon {
  transform: rotate(180deg);
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.accordion-body {
  padding: 0 1.5rem 1.6rem 3.4rem;
  border-top: 1px solid var(--color-border-light);
  background: var(--color-bg);
}

.accordion-core-idea {
  font-size: 0.95rem;
  color: var(--color-text-main);
  font-weight: 600;
  margin: 1rem 0 0.8rem;
  line-height: 1.5;
}

.accordion-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topic-tag {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  color: var(--color-text-body);
  font-weight: 500;
}

/* --- 13. Signature Systems Section --- */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.system-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
}

.system-badge {
  display: inline-block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.system-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--color-text-main);
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.system-desc {
  font-size: 0.95rem;
  color: var(--color-text-body);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* Visual Ledger Mockup */
.ledger-preview {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-size: 0.8rem;
  margin-top: auto;
}

.ledger-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  padding: 0.4rem 0.2rem;
  border-bottom: 1px dashed var(--color-border);
  font-family: monospace;
}
.ledger-row:last-child {
  border-bottom: none;
}
.ledger-header {
  font-weight: 700;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-border);
}

/* Progression Score Bar */
.score-progression {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
}

.score-step {
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.score-step.is-active {
  color: var(--color-accent);
}

.score-arrow {
  color: var(--color-border);
  font-size: 0.8rem;
}

/* --- 14. Bonuses Section --- */
.bonuses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 1.5rem;
}

.bonus-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-fast);
}
.bonus-card:hover {
  border-color: var(--color-amber);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.bonus-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  color: var(--color-amber);
  margin-bottom: 0.6rem;
}

.bonus-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-text-main);
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.bonus-desc {
  font-size: 0.92rem;
  color: var(--color-text-body);
  line-height: 1.55;
}

/* --- 15. Differentiation: Random Tips vs Systems Table --- */
.diff-wrap {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  max-width: 900px;
  margin: 0 auto;
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.diff-col {
  padding: clamp(1.8rem, 3.5vw, 2.5rem);
}

.diff-col-negative {
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border);
}

.diff-col-positive {
  background: #FFFFFF;
}

.diff-header {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}
.diff-col-negative .diff-header {
  color: var(--color-text-muted);
}
.diff-col-positive .diff-header {
  color: var(--color-accent);
}

.diff-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.diff-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.diff-icon-x {
  color: #B44A3A;
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 2px;
}

.diff-icon-check {
  color: var(--color-accent);
  font-weight: bold;
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- 16. First Weekend 6-Step Roadmap --- */
.steps-progression {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0;
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.2rem;
  text-align: center;
  position: relative;
}

.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-amber-subtle);
  color: var(--color-amber);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.85rem;
  font-size: 0.85rem;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.35rem;
}

.step-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* --- 17. Safety & Responsible Use Notice --- */
.safety-box {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-left: 5px solid var(--color-amber);
  border-radius: var(--radius-md);
  padding: clamp(1.6rem, 3.5vw, 2.4rem);
  max-width: 900px;
  margin: 0 auto;
}

.safety-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.safety-icon {
  color: var(--color-amber);
  flex-shrink: 0;
}

.safety-header h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-text-main);
  font-weight: 700;
}

.safety-text {
  font-size: 0.98rem;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.safety-tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.safety-tag {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-body);
}

/* --- 18. Target Audience (Who This Is For / Not For) --- */
.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.audience-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.2rem 1.8rem;
}

.audience-card-for {
  border-top: 4px solid var(--color-accent);
}

.audience-card-not {
  border-top: 4px solid #B44A3A;
  background: var(--color-bg-alt);
}

.audience-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
  font-weight: 700;
}

.audience-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.audience-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* --- 19. How It Works (3 Steps) --- */
.hiw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.hiw-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
}

.hiw-step-num {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.hiw-card h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-text-main);
  margin-bottom: 0.65rem;
  font-weight: 700;
}

.hiw-card p {
  font-size: 0.95rem;
  color: var(--color-text-body);
  line-height: 1.55;
}

/* --- 20. Main Pricing / Offer Section --- */
.pricing-wrap {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3.2rem);
  box-shadow: var(--shadow-xl);
  text-align: center;
  position: relative;
  transition: outline 0.3s ease;
}

.pricing-card.highlight-pricing {
  outline: 4px solid var(--color-amber);
}

.pricing-badge-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  margin: 0 auto 1.25rem;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(36, 82, 59, 0.2);
}

.pricing-product-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  color: var(--color-text-main);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.pricing-product-sub {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  margin-bottom: 1.75rem;
}

.price-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 6vw, 4.4rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.price-terms {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  text-align: left;
  line-height: 1.3;
}

.pricing-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  text-align: left;
  margin: 0 auto 2.2rem;
  max-width: 480px;
}

.pricing-check-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.98rem;
  color: var(--color-text-body);
  font-weight: 500;
}

.pricing-disclaimer {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 1.2rem;
  line-height: 1.5;
}

/* --- 21. FAQ Section --- */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 860px;
  margin: 0 auto;
}

/* --- 22. Pre-Footer & Final CTA Sections --- */
.cta-banner {
  background: var(--color-accent);
  color: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4.5rem) clamp(1.5rem, 4vw, 3rem);
  text-align: center;
  max-width: 1000px;
  margin: 0 auto;
  box-shadow: var(--shadow-xl);
}

.cta-banner .section-title {
  color: #FFFFFF;
}

.cta-banner p {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.65;
  max-width: 680px;
  margin: 0 auto 2rem;
  color: #E2EDE6;
}

/* --- 23. Site Footer --- */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2.5rem;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand h4 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.footer-col h5 {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-main);
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.82rem;
  line-height: 1.6;
}

.footer-disclaimer-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1rem 1.2rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  text-align: left;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* --- 24. Modals for Legal Disclaimers --- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(29, 36, 32, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  box-sizing: border-box;
}

.modal-overlay.is-active {
  display: flex;
}

.modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  max-width: 650px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.2rem;
  position: relative;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
}

.modal-close {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
}

.modal-card h3 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-text-main);
  margin-bottom: 1rem;
}

.modal-body {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--color-text-body);
}
.modal-body p {
  margin-bottom: 0.85rem;
}

/* --- 25. Sticky Mobile Bottom Conversion Bar --- */
.sticky-mobile-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  background: rgba(251, 248, 241, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  z-index: 950;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

.sticky-mobile-bar.is-visible {
  transform: translateY(0);
}

.sticky-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  max-width: 600px;
  margin: 0 auto;
}

.sticky-bar-info {
  display: flex;
  flex-direction: column;
}

.sticky-bar-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-main);
  line-height: 1.2;
}

.sticky-bar-price {
  font-size: 0.82rem;
  color: var(--color-accent);
  font-weight: 700;
}

.sticky-bar-btn-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* --- 26. Responsive Breakpoints --- */

/* Navigation Breakpoint: Tablets & below (<= 1024px) */
@media (max-width: 1024px) {
  .nav-desktop,
  .header-cta-desktop {
    display: none !important;
  }

  .nav-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Tablets & Mobile (<= 768px) */
@media (max-width: 768px) {
  .hero-badge-wrap {
    justify-content: center;
    width: 100%;
  }

  .pricing-badge-top {
    font-size: 0.74rem;
    padding: 0.35rem 0.95rem;
    margin-bottom: 1rem;
  }

  .sticky-mobile-bar {
    display: block;
  }

  body {
    padding-bottom: 70px; /* offset for sticky mobile bar */
  }

  .hero-checklist {
    grid-template-columns: 1fr;
  }

  .diff-grid {
    grid-template-columns: 1fr;
  }
  .diff-col-negative {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }

  .audience-grid,
  .hiw-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .accordion-body {
    padding-left: 1.5rem;
  }

  .btn {
    width: 100%;
    max-width: 480px;
  }

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

  .mockup-badge-floating {
    position: static;
    margin-top: 1rem;
  }
}

/* Small Screens (<= 480px) */
@media (max-width: 480px) {
  .book-3d {
    width: 240px;
    height: 365px;
    padding: 1rem 0.8rem;
  }

  .book-title {
    font-size: 1.25rem;
  }

  .book-title-accent {
    font-size: 1.08rem;
  }

  .book-subtitle {
    font-size: 0.68rem;
    max-width: 180px;
  }

  .btn-lg {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
}