/* ==========================================================================
   Weekfold Official Website Stylesheet
   Design System based on Weekfold DesignTokens.swift
   "Your week, unfolded."
   ========================================================================== */

:root {
  /* Core Paper & Ink Tokens (Light Mode Default) */
  --paper-bg: #F4F3F0;
  --paper-elevated: #FAF9F7;
  --fold-0: #E6E5E2;
  --fold-1: #DBD9D6;
  --fold-2: #CECCC9;
  --fold-3: #C0BEBB;
  --fold-4: #B4B2AF;
  --fold-5: #A8A6A3;

  --ink-primary: #292929;
  --ink-secondary: #767572;
  --ink-placeholder: #ACABA8;
  --border-subtle: rgba(41, 41, 41, 0.11);
  --border-strong: rgba(41, 41, 41, 0.22);

  /* Accent Theme (Default: Mark Orange #F15A24) */
  --accent: #F15A24;
  --accent-soft: rgba(241, 90, 36, 0.12);
  --accent-hover: #D94B18;

  /* Status Colors */
  --success: #2B6E46;
  --shadow-sm: 0 2px 8px rgba(28, 28, 27, 0.05);
  --shadow-md: 0 12px 32px rgba(28, 28, 27, 0.08);
  --shadow-lg: 0 24px 60px rgba(28, 28, 27, 0.14);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Layout & Transitions */
  --container-max: 1160px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 34px;
  --fold-transition: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Tokens (Matching DesignTokens.swift paperDark & darkShades) */
[data-theme="dark"] {
  --paper-bg: #1C1C1B;
  --paper-elevated: #222220;
  --fold-0: #242422;
  --fold-1: #292927;
  --fold-2: #2E2E2C;
  --fold-3: #333330;
  --fold-4: #383835;
  --fold-5: #3D3D3A;

  --ink-primary: #EFECE6;
  --ink-secondary: #9A9893;
  --ink-placeholder: #676662;
  --border-subtle: rgba(239, 236, 230, 0.12);
  --border-strong: rgba(239, 236, 230, 0.24);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.38);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.55);
}

/* Accent Theme Overrides */
[data-accent="markOrange"] {
  --accent: #F15A24;
  --accent-soft: rgba(241, 90, 36, 0.14);
  --accent-hover: #D94B18;
}
[data-accent="inkBlack"] {
  --accent: #292929;
  --accent-soft: rgba(41, 41, 41, 0.12);
  --accent-hover: #111111;
}
[data-theme="dark"][data-accent="inkBlack"] {
  --accent: #D6D2C9;
  --accent-soft: rgba(214, 210, 201, 0.16);
  --accent-hover: #EFECE6;
}
[data-accent="forestGreen"] {
  --accent: #2B6E46;
  --accent-soft: rgba(43, 110, 70, 0.14);
  --accent-hover: #215737;
}
[data-accent="cobaltBlue"] {
  --accent: #2458F1;
  --accent-soft: rgba(36, 88, 241, 0.14);
  --accent-hover: #1A46CC;
}
[data-accent="siennaRed"] {
  --accent: #C84B31;
  --accent-soft: rgba(200, 75, 49, 0.14);
  --accent-hover: #AD3C24;
}

/* ==========================================================================
   Reset & Base Typography
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
  width: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--paper-bg);
  color: var(--ink-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--fold-transition), color var(--fold-transition);
  overflow-x: clip;
  width: 100%;
  max-width: 100vw;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.18s ease, opacity 0.18s ease;
}

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

button, input {
  font-family: inherit;
  color: inherit;
}

/* Skip to main content for Accessibility & SEO */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 16px;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: color-mix(in srgb, var(--paper-bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--fold-transition), border-color var(--fold-transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.brand-name {
  font-weight: 900;
  letter-spacing: -0.03em;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-desktop {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--ink-secondary);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--fold-0);
  color: var(--ink-primary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  gap: 6px;
  transition: all 0.18s ease;
  white-space: nowrap;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

.icon-btn:hover {
  border-color: var(--border-strong);
  background: var(--fold-1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.94rem;
  cursor: pointer;
  border: none;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 0.15s ease, background-color 0.18s ease, box-shadow 0.18s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
  box-shadow: 0 4px 14px var(--accent-soft);
}

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

.btn-secondary {
  background-color: var(--fold-0);
  color: var(--ink-primary);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--fold-1);
  border-color: var(--border-strong);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
}

.mobile-menu-toggle {
  display: none;
  background: var(--fold-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.mobile-menu-toggle:hover {
  background: var(--fold-1);
  border-color: var(--border-strong);
}

/* Modern Animated Hamburger Icon */
.hamburger-icon {
  width: 17px;
  height: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.hamburger-icon span {
  display: block;
  width: 100%;
  height: 1.8px;
  background-color: var(--ink-primary);
  border-radius: 2px;
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.18s ease;
}

.mobile-menu-toggle.is-active .hamburger-icon span:nth-child(1) {
  transform: translateY(5.1px) rotate(45deg);
}

.mobile-menu-toggle.is-active .hamburger-icon span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-active .hamburger-icon span:nth-child(3) {
  transform: translateY(-5.1px) rotate(-45deg);
}

/* Mobile Nav Drawer & Backdrop Initial Defaults */
.mobile-nav-backdrop {
  display: none;
}

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

.table-scroll-hint {
  display: none;
}

.policy-table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-sticky-cta {
  display: none;
}

/* ==========================================================================
   Hero Section & Interactive Weekfold Phone Mockup
   ========================================================================== */
.hero-section {
  padding: 72px 0 88px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--fold-0);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  white-space: nowrap;
  max-width: 100%;
}

.hero-title {
  font-size: clamp(2.05rem, 6.5vw, 4.25rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

.hero-title .highlight {
  color: var(--accent);
}

.hero-subtitle {
  font-size: clamp(1.06rem, 1.8vw, 1.22rem);
  color: var(--ink-secondary);
  max-width: 540px;
  margin-bottom: 32px;
  line-height: 1.65;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  list-style: none;
  font-size: 0.86rem;
  color: var(--ink-secondary);
}

.hero-meta-list li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-meta-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent);
}

/* Interactive Phone Frame (Replica of WeekView.swift + DaySectionView.swift) */
.simulator-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.simulator-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 400px;
  margin-bottom: 12px;
  padding: 8px 14px;
  background: var(--fold-0);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  font-size: 0.8rem;
}

.swatch-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.swatch-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.swatch-btn.active {
  transform: scale(1.18);
  border-color: var(--ink-primary);
}

.phone-device {
  width: 100%;
  max-width: 400px;
  background: var(--paper-bg);
  border-radius: var(--radius-xl);
  border: 8px solid var(--ink-primary);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
}

.phone-statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px 8px;
  background: var(--paper-bg);
  font-size: 0.78rem;
  font-weight: 700;
}

.dynamic-island {
  background: #111111;
  color: #FFFFFF;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.island-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.weekfold-accordion {
  display: flex;
  flex-direction: column;
}

.day-fold-item {
  border-bottom: 1px solid rgba(41, 41, 41, 0.06);
  transition: background-color var(--fold-transition), padding var(--fold-transition);
  cursor: pointer;
  user-select: none;
}

.day-fold-item.is-expanded {
  background-color: var(--paper-bg);
  padding: 20px 24px 22px;
  cursor: default;
}

.day-fold-item.fold-order-0 { background-color: var(--fold-0); padding: 18px 24px; }
.day-fold-item.fold-order-1 { background-color: var(--fold-1); padding: 18px 24px; }
.day-fold-item.fold-order-2 { background-color: var(--fold-2); padding: 18px 24px; }
.day-fold-item.fold-order-3 { background-color: var(--fold-3); padding: 18px 24px; }
.day-fold-item.fold-order-4 { background-color: var(--fold-4); padding: 18px 24px; }
.day-fold-item.fold-order-5 { background-color: var(--fold-5); padding: 18px 24px; }

.day-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  cursor: pointer;
}

.day-name {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink-primary);
}

.day-badge {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--ink-secondary);
}

.day-fold-item.is-expanded .day-badge {
  color: var(--accent);
}

.day-date-subtitle {
  font-size: 0.8rem;
  color: var(--ink-secondary);
  margin-top: 4px;
  margin-bottom: 16px;
}

.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.task-row {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 30px;
  cursor: pointer;
}

.task-checkbox {
  width: 19px;
  height: 19px;
  border-radius: 3.5px;
  border: 1.4px solid var(--ink-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
  background: transparent;
}

.task-row.completed .task-checkbox {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #FFFFFF;
}

.task-title {
  font-size: 0.95rem;
  color: var(--ink-primary);
  transition: color 0.15s ease;
  position: relative;
}

.task-row.completed .task-title {
  color: var(--ink-secondary);
  text-decoration: line-through;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1.6px;
}

.quick-add-form {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-subtle);
}

.quick-add-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: 0.9rem;
  color: var(--ink-primary);
}

.quick-add-input::placeholder {
  color: var(--ink-placeholder);
}

.quick-add-submit {
  background: var(--accent);
  color: #FFFFFF;
  border: none;
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.simulator-caption {
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--ink-secondary);
  text-align: center;
}

/* ==========================================================================
   Section Scaffolding
   ========================================================================== */
.section {
  padding: 88px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-alt {
  background-color: var(--fold-0);
}

.section-header {
  max-width: 680px;
  margin-bottom: 52px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: clamp(1.85rem, 3.4vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--ink-secondary);
}

/* ==========================================================================
   Features Bento Grid
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--paper-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

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

.feature-card.span-2 {
  grid-column: span 2;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.feature-card h3 {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: -0.015em;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--ink-secondary);
  line-height: 1.65;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 8px;
}

.tag-pill {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--fold-0);
  color: var(--ink-secondary);
  border: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Design Philosophy & Fold Depth Showcase
   ========================================================================== */
.fold-layers-demo {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  margin-top: 32px;
}

.fold-swatch-card {
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 130px;
}

.fold-swatch-card .swatch-label {
  font-weight: 800;
  font-size: 0.9rem;
}

.fold-swatch-card .swatch-hex {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-secondary);
}

/* ==========================================================================
   Free vs Pro Comparison Table (Matching PaywallView.swift)
   ========================================================================== */
.pricing-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: 32px;
  align-items: stretch;
  min-width: 0;
}

.comparison-table-wrap {
  background: var(--paper-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow-sm);
  min-width: 0;
  max-width: 100%;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.95rem;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table th {
  background: var(--fold-0);
  font-weight: 800;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comparison-table td.pro-col,
.comparison-table th.pro-col {
  color: var(--accent);
  font-weight: 700;
}

.pro-buyout-card {
  background: var(--paper-elevated);
  border: 2px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
}

.price-tag {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--ink-primary);
  margin: 12px 0 6px;
}

.price-tag span {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-secondary);
}

.pro-perks {
  list-style: none;
  margin: 22px 0 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.93rem;
}

.pro-perks li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 800;
  margin-right: 10px;
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 820px;
}

.faq-item {
  background: var(--paper-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.04rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--ink-secondary);
  font-size: 0.96rem;
  line-height: 1.7;
}

/* ==========================================================================
   Privacy Policy Page Layout (privacy.html)
   ========================================================================== */
.privacy-hero {
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--fold-0);
}

.privacy-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.privacy-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--paper-bg);
  border: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--ink-secondary);
}

.privacy-meta-pill .meta-label {
  font-weight: 700;
  color: var(--ink-primary);
}

.privacy-highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.privacy-pill-card {
  background: var(--paper-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.privacy-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.privacy-card-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 700;
  flex-shrink: 0;
}

.privacy-pill-card h2 {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0;
  color: var(--ink-primary);
}

.privacy-pill-card p {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  line-height: 1.62;
}

.privacy-content-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 48px;
  padding: 56px 0 88px;
  align-items: start;
  min-width: 0;
}

/* Sticky Chapter Table of Contents (TOC) */
.privacy-toc {
  position: sticky;
  top: 92px;
  background: var(--fold-0);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}

.privacy-toc-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: default;
  margin-bottom: 14px;
}

.privacy-toc-summary::-webkit-details-marker {
  display: none;
}

.toc-summary-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-icon {
  font-size: 1rem;
}

.toc-title-text {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-secondary);
  font-weight: 800;
}

.toc-active-badge {
  display: none;
}

.toc-chevron {
  display: none;
}

.privacy-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.privacy-toc-list a {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  border-radius: 6px;
  transition: all 0.15s ease;
}

.privacy-toc-list a .toc-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.7;
}

.privacy-toc-list a:hover,
.privacy-toc-list a.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}

.privacy-article {
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-width: 0;
  max-width: 100%;
  width: 100%;
}

.policy-section {
  background: var(--paper-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  scroll-margin-top: 96px;
  min-width: 0;
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  overflow: hidden;
  word-break: break-word;
  overflow-wrap: break-word;
}

.policy-section h2 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
  color: var(--ink-primary);
}

.policy-section p {
  color: var(--ink-secondary);
  margin-bottom: 14px;
  font-size: 0.96rem;
  line-height: 1.72;
}

.policy-section p:last-child {
  margin-bottom: 0;
}

.policy-section ul {
  list-style: none;
  margin: 12px 0 14px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.policy-section li {
  position: relative;
  padding-left: 20px;
  font-size: 0.95rem;
  line-height: 1.68;
  color: var(--ink-secondary);
}

.policy-section li::before {
  content: "•";
  position: absolute;
  left: 2px;
  top: 0;
  color: var(--accent);
  font-weight: 900;
  font-size: 1.15rem;
  line-height: 1.45;
}

.policy-section li strong {
  color: var(--ink-primary);
}

.policy-table-wrap {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--paper-bg);
  margin-top: 14px;
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.policy-table th,
.policy-table td {
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 14px;
  text-align: left;
}

.policy-table tr:last-child td {
  border-bottom: none;
}

.policy-table th {
  background: var(--fold-0);
  color: var(--ink-primary);
  font-weight: 700;
}

.policy-table td {
  color: var(--ink-secondary);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  padding: 56px 0 44px;
  background: var(--fold-0);
  border-top: 1px solid var(--border-subtle);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-brand p {
  color: var(--ink-secondary);
  font-size: 0.92rem;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col h3 {
  font-size: 0.84rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.92rem;
  color: var(--ink-secondary);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  font-size: 0.85rem;
  color: var(--ink-secondary);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile H5 Optimization
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 44px;
  }
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .feature-card.span-2 {
    grid-column: span 2;
  }
  .pricing-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .privacy-content-layout {
    grid-template-columns: minmax(0, 1fr);
  }
  .privacy-toc {
    position: static;
  }
  .fold-layers-demo {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  /* 1. Body & Container Lock on Drawer */
  body.mobile-nav-locked {
    overflow: hidden;
    touch-action: none;
  }

  /* 2. Header & Navigation */
  .site-header {
    padding-top: env(safe-area-inset-top, 0px);
  }

  .nav-inner {
    height: 60px;
    gap: 12px;
    position: relative;
    z-index: 1002;
  }

  .nav-desktop {
    display: none;
  }

  .nav-actions .nav-download-btn {
    display: none; /* Prevents overflow and awkward vertical text on mobile */
  }

  .brand-link {
    gap: 8px;
  }

  .brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .brand-tag {
    padding: 2px 6px;
    font-size: 0.65rem;
  }

  .nav-actions {
    gap: 8px;
  }

  .theme-toggle-btn {
    width: 38px;
    height: 38px;
    padding: 0;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 1rem;
  }

  .theme-toggle-btn .theme-label {
    display: none;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  /* 3. Mobile Navigation Drawer & Backdrop */
  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(18, 18, 18, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.24s ease;
  }

  .mobile-nav-backdrop.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: calc(60px + env(safe-area-inset-top, 0px));
    left: 0;
    right: 0;
    background-color: var(--paper-bg);
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 20px 24px;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.22s ease;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .mobile-nav-drawer.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 18px;
  }

  .mobile-nav-links a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 1.02rem;
    font-weight: 600;
    color: var(--ink-primary);
    background: var(--paper-elevated);
    border: 1px solid var(--border-subtle);
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  }

  .mobile-nav-links a:active,
  .mobile-nav-links a:hover {
    background: var(--fold-0);
    border-color: var(--accent);
    color: var(--accent);
  }

  .mobile-nav-links .nav-label {
    display: inline-flex;
    align-items: center;
    gap: 12px;
  }

  .mobile-nav-links .nav-arrow {
    font-size: 1.15rem;
    color: var(--ink-placeholder);
    font-weight: 300;
  }

  .mobile-nav-links .nav-icon {
    width: 22px;
    text-align: center;
    color: var(--accent);
    font-size: 1.05rem;
  }

  .mobile-nav-cta .btn-block {
    width: 100%;
    height: 48px;
    font-size: 0.98rem;
  }

  /* 4. Hero Section */
  .hero-section {
    padding: 36px 0 52px;
  }

  .eyebrow-badge {
    font-size: 0.72rem;
    padding: 5px 12px;
    gap: 6px;
    margin-bottom: 16px;
  }

  .hero-title {
    font-size: clamp(1.95rem, 7.6vw, 3rem);
    line-height: 1.12;
    margin-bottom: 16px;
  }

  .hero-subtitle {
    font-size: 0.96rem;
    line-height: 1.62;
    margin-bottom: 22px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 10px;
    margin-bottom: 24px;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
    font-size: 0.98rem;
    justify-content: center;
  }

  .hero-meta-list {
    gap: 8px 14px;
    font-size: 0.8rem;
  }

  /* 5. Interactive Simulator */
  .simulator-controls-bar {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
  }

  .swatch-btn {
    width: 22px;
    height: 22px;
  }

  #sim-lang-toggle {
    height: 32px;
    font-size: 0.74rem;
    padding: 0 10px;
  }

  .phone-device {
    border-width: 5px;
    border-radius: 24px;
    max-width: 100%;
  }

  .phone-statusbar {
    padding: 8px 14px 6px;
    font-size: 0.74rem;
  }

  .dynamic-island {
    padding: 4px 10px;
    font-size: 0.65rem;
    gap: 5px;
  }

  .day-fold-item.is-expanded {
    padding: 14px 14px 18px;
  }

  .day-fold-item.fold-order-0,
  .day-fold-item.fold-order-1,
  .day-fold-item.fold-order-2,
  .day-fold-item.fold-order-3,
  .day-fold-item.fold-order-4,
  .day-fold-item.fold-order-5 {
    padding: 12px 14px;
  }

  .day-name {
    font-size: 1.35rem;
  }

  .day-badge {
    font-size: 0.68rem;
  }

  .day-date-subtitle {
    font-size: 0.75rem;
    margin-top: 2px;
    margin-bottom: 12px;
  }

  .task-list {
    gap: 6px;
    margin-bottom: 10px;
  }

  .task-row {
    padding: 8px 10px;
    min-height: 36px;
    border-radius: 8px;
  }

  .task-checkbox {
    width: 19px;
    height: 19px;
    border-radius: 4px;
  }

  .task-title {
    font-size: 0.88rem;
  }

  .quick-add-form {
    margin-top: 8px;
    padding-top: 8px;
  }

  .quick-add-input {
    font-size: 16px; /* Crucial: prevents auto-zoom on iOS Safari */
  }

  .quick-add-submit {
    padding: 5px 12px;
    font-size: 0.75rem;
  }

  /* 6. Features Grid */
  .section {
    padding: 56px 0;
  }

  .features-grid,
  .privacy-highlights-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .feature-card.span-2 {
    grid-column: span 1;
  }

  .feature-card {
    padding: 22px 20px;
  }

  /* 7. Fold Paper Layers */
  .fold-layers-demo {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    border: none;
    background: transparent;
    margin-top: 24px;
  }

  .fold-swatch-card {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    min-height: 84px;
    padding: 14px 12px;
  }

  .fold-swatch-card .swatch-label {
    font-size: 0.82rem;
  }

  .fold-swatch-card .swatch-hex {
    font-size: 0.72rem;
  }

  /* 8. Pricing & Comparison Table */
  .comparison-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    position: relative;
  }

  .table-scroll-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--ink-secondary);
    text-align: center;
    padding: 8px 12px;
    background: var(--fold-0);
    border-bottom: 1px solid var(--border-subtle);
    letter-spacing: 0.02em;
  }

  .comparison-table {
    min-width: 520px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 12px 14px;
    font-size: 0.85rem;
  }

  .pro-buyout-card {
    padding: 24px 20px;
  }

  .price-tag {
    font-size: 2.2rem;
  }

  .pro-perks {
    font-size: 0.88rem;
    gap: 8px;
    margin: 16px 0 24px;
  }

  /* 9. FAQ Section */
  .faq-item summary {
    padding: 16px 18px;
    font-size: 0.96rem;
  }

  .faq-answer {
    padding: 0 18px 16px;
    font-size: 0.9rem;
    line-height: 1.62;
  }

  /* 10. Privacy Policy Page (Mobile H5 Optimized) */
  .privacy-hero {
    padding: 36px 0 28px;
  }

  .privacy-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-top: 16px;
  }

  .privacy-meta-pill {
    padding: 4px 10px;
    font-size: 0.78rem;
  }

  .privacy-highlights-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    margin-top: 22px;
  }

  .privacy-pill-card {
    padding: 16px 14px;
  }

  .privacy-content-layout {
    display: block;
    padding: 16px 0 60px;
    min-width: 0;
  }

  /* Sticky Collapsible TOC on Mobile */
  .privacy-toc {
    position: sticky;
    top: calc(60px + env(safe-area-inset-top, 0px));
    z-index: 950;
    background: color-mix(in srgb, var(--paper-bg) 96%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 0;
    margin-bottom: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  }

  .privacy-toc-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 44px;
    padding: 0 14px;
    cursor: pointer;
    margin-bottom: 0;
    user-select: none;
  }

  .toc-summary-left {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    overflow: hidden;
  }

  .toc-title-text {
    font-size: 0.78rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .toc-active-badge {
    display: inline-block;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    padding: 2px 8px;
    border-radius: 999px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 170px;
  }

  .toc-chevron {
    display: inline-block;
    font-size: 0.95rem;
    color: var(--ink-secondary);
    transition: transform 0.2s ease;
    flex-shrink: 0;
  }

  .privacy-toc[open] .toc-chevron {
    transform: rotate(180deg);
  }

  .privacy-toc-dropdown {
    padding: 8px 10px 14px;
    border-top: 1px solid var(--border-subtle);
    max-height: 52vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .privacy-toc-list {
    gap: 6px;
  }

  .privacy-toc-list a {
    padding: 10px 12px;
    font-size: 0.9rem;
    border-radius: 8px;
    background: var(--fold-0);
  }

  .privacy-toc-list a.active {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
  }

  .privacy-article {
    min-width: 0;
    max-width: 100%;
    width: 100%;
    gap: 16px;
  }

  .policy-section {
    padding: 20px 16px;
    scroll-margin-top: 116px; /* 60px header + 44px sticky TOC + 12px margin */
    min-width: 0;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
  }

  .policy-section h2 {
    font-size: 1.18rem;
    margin-bottom: 12px;
  }

  .policy-section p {
    font-size: 0.91rem;
    line-height: 1.66;
    margin-bottom: 12px;
  }

  .policy-section ul {
    gap: 10px;
    margin: 10px 0 12px 0;
  }

  .policy-section li {
    padding-left: 18px;
    font-size: 0.89rem;
    line-height: 1.62;
  }

  .policy-table-wrap {
    margin-top: 12px;
    border-radius: var(--radius-sm);
  }

  .policy-table {
    min-width: 500px;
    font-size: 0.82rem;
  }

  .policy-table th,
  .policy-table td {
    padding: 10px 12px;
  }

  /* 11. Footer */
  .site-footer {
    padding: 44px 0 calc(36px + env(safe-area-inset-bottom, 0px));
  }

  .footer-grid {
    gap: 28px;
    padding-bottom: 30px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
    font-size: 0.78rem;
  }

  /* 12. Mobile Sticky Floating Download CTA Pill */
  .mobile-sticky-cta {
    display: block;
    position: fixed;
    bottom: max(16px, env(safe-area-inset-bottom, 16px));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    opacity: 0;
    pointer-events: none;
    z-index: 990;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.28s ease;
    width: calc(100% - 32px);
    max-width: 360px;
  }

  .mobile-sticky-cta.is-visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .btn-floating {
    width: 100%;
    height: 48px;
    border-radius: 999px;
    background-color: var(--accent);
    color: #FFFFFF;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24), 0 2px 6px var(--accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.96rem;
    font-weight: 700;
  }

  .btn-floating:active {
    transform: scale(0.98);
  }
}

/* 13. Extra Small Screen Optimizations (< 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .brand-tag {
    display: none;
  }

  .eyebrow-badge {
    font-size: 0.7rem;
    padding: 4px 12px;
  }

  .eyebrow-badge .badge-dot,
  .eyebrow-badge .badge-platform {
    display: none; /* Keep the sleek 'YOUR WEEK, UNFOLDED' on very narrow screens */
  }

  .hero-title {
    font-size: clamp(1.85rem, 8vw, 2.35rem);
  }

  .phone-device {
    border-width: 4px;
    border-radius: 20px;
  }

  .day-name {
    font-size: 1.25rem;
  }

  .fold-layers-demo {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}