/* ========================================
   1. Design Tokens (CSS Custom Properties)
   ======================================== */

:root {
  /* Brand Colors */
  --color-brand: #7799dd;
  --color-brand-hover: #5674b9;
  --color-brand-light: #EEF2FA;
  --color-brand-gradient: linear-gradient(135deg, #7799dd 0%, #5674b9 100%);

  /* Neutral */
  --color-neutral-0: #FFFFFF;
  --color-neutral-10: #FAFBFC;
  --color-neutral-20: #F4F5F7;
  --color-neutral-30: #EBECF0;
  --color-neutral-40: #DFE1E6;
  --color-neutral-60: #6B778C;
  --color-neutral-80: #42526E;
  --color-neutral-100: #172B4D;

  /* Product Colors */
  --color-agentlimits: #E8590C;
  --color-coverzip: #8B5CF6;
  --color-timeslice: #16A34A;
  --color-leafmarq: #0EA5E9;
  --color-leafthru: #EF5750;
  --color-comicapture: #6366F1;
  --color-joyhackplayer: #2563EB;
  --color-xojo-syntax: #65A30D;
  --color-apricot: #F97316;
  --color-agentbooth: #E040A0;
  --color-porthole: #0891B2;

  /* Shadows */
  --shadow-card: 0 1px 2px rgba(23, 43, 77, 0.04), 0 3px 8px rgba(23, 43, 77, 0.08);
  --shadow-card-hover: 0 4px 12px rgba(23, 43, 77, 0.14), 0 8px 24px rgba(23, 43, 77, 0.10);
  --shadow-brand: 0 4px 12px rgba(86, 116, 185, 0.24), 0 8px 20px rgba(86, 116, 185, 0.14);
  --shadow-header: 0 1px 0 rgba(23, 43, 77, 0.12);
  --shadow-dropdown: 0 8px 24px rgba(23, 43, 77, 0.16), 0 2px 8px rgba(23, 43, 77, 0.10);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-icon: 22.37%; /* macOS icon rounded corners */

  /* Spacing (8px grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Typography */
  --font-family: "Lucida Grande", Verdana, AquaKana, ArialMT, "Hiragino Kaku Gothic ProN", "メイリオ", Meiryo, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, "DejaVu Sans Mono", Menlo, Consolas, monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Layout */
  --container-max: 1200px;
  --header-height: 64px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* ========================================
   2. Reset & Base
   ======================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  line-height: 1.5;
  color: var(--color-neutral-100);
  background-color: var(--color-neutral-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-brand);
  text-decoration: none;
}

a:hover {
  color: var(--color-brand-hover);
}

ul, ol {
  list-style: none;
}

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

/* ========================================
   3. Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: 1.25;
  color: var(--color-neutral-100);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }

p {
  line-height: 1.6;
  color: var(--color-neutral-80);
}

/* ========================================
   4. Layout Utilities
   ======================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-neutral-60);
  margin-bottom: var(--space-12);
  max-width: 560px;
}

/* ========================================
   5. Header & Navigation
   ======================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background:
    linear-gradient(135deg, rgba(119, 153, 221, 0.18) 0%, rgba(86, 116, 185, 0.12) 100%),
    rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(86, 116, 185, 0.18);
  transition: box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(119, 153, 221, 0.16) 0%, rgba(86, 116, 185, 0.08) 100%);
  pointer-events: none;
  opacity: 0.9;
}

.site-header.scrolled {
  box-shadow: var(--shadow-header);
}

.site-header .container {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.site-logo__image {
  display: block;
  width: 112px;
  height: auto;
}

.site-logo:hover {
  opacity: 0.85;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.locale-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px;
  border: 1px solid rgba(86, 116, 185, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.locale-switch__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-60);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.locale-switch__link:hover {
  background: rgba(238, 242, 250, 0.9);
  color: var(--color-neutral-100);
}

.locale-switch__link--active {
  background: var(--color-neutral-0);
  color: var(--color-neutral-100);
  box-shadow: 0 1px 3px rgba(86, 116, 185, 0.16);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-neutral-80);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  background-color: rgba(238, 242, 250, 0.92);
  color: var(--color-neutral-100);
}

.nav-link.active {
  color: var(--color-neutral-100);
  background-color: rgba(238, 242, 250, 0.95);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-neutral-80);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  cursor: pointer;
}

.nav-dropdown-trigger:hover,
.nav-dropdown.open .nav-dropdown-trigger {
  background-color: rgba(238, 242, 250, 0.92);
  color: var(--color-neutral-100);
}

.nav-dropdown-trigger svg {
  transition: transform var(--transition-fast);
}

.nav-dropdown.open .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-30);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-dropdown);
  padding: var(--space-2);
  min-width: 240px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  pointer-events: none;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-neutral-80);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-item:hover {
  background-color: var(--color-neutral-10);
  color: var(--color-neutral-100);
}

.nav-dropdown-item img {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-icon);
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover {
  background-color: var(--color-neutral-20);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-neutral-80);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   6. Hero Section (Top Page)
   ======================================== */

.hero {
  padding: var(--space-24) var(--space-6) var(--space-20);
  text-align: center;
  background: linear-gradient(160deg, #EEF2FA 0%, var(--color-neutral-0) 60%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(119, 153, 221, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-brand);
  background: var(--color-brand-light);
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  margin-bottom: var(--space-5);
}

.hero__title {
  font-size: clamp(2rem, 5vw, var(--text-5xl));
  font-weight: var(--weight-bold);
  color: var(--color-neutral-100);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-5);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero__brand {
  margin: 0 auto var(--space-3);
}

.hero__brand-logo {
  display: block;
  width: min(380px, 78vw);
  height: auto;
  margin: 0 auto;
}

.hero__brand-copy {
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  color: var(--color-neutral-80);
  line-height: 1.5;
  margin: 0 auto var(--space-5);
  max-width: 560px;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-neutral-60);
  max-width: 520px;
  margin: 0 auto var(--space-8);
  line-height: 1.6;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--color-brand-gradient);
  color: var(--color-neutral-0);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-md);
  transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-brand);
}

.hero__cta:hover {
  opacity: 0.88;
  color: var(--color-neutral-0);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(86, 116, 185, 0.28), 0 4px 10px rgba(86, 116, 185, 0.24);
}

/* ========================================
   7. Product Cards (Top Page)
   ======================================== */

.products-section {
  padding: var(--space-16) 0 var(--space-20);
}

.products-section__header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
}

.product-card {
  display: flex;
  flex-direction: column;
  position: relative;
  background: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-30);
  border-radius: var(--radius-xl);
  border-top: 3px solid var(--product-color, var(--color-brand));
  padding: var(--space-8);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  color: inherit;
  text-decoration: none;
}

/* Overlay link covers the whole card (allows nested action buttons) */
.product-card__overlay-link {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-xl);
  z-index: 0;
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  pointer-events: none;
}

.product-card__footer .btn-download,
.product-card__footer .btn-marketplace,
.product-card__footer .btn-download--sm,
.product-card__footer .btn-marketplace--sm {
  pointer-events: auto;
}

.product-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  color: inherit;
}

.product-card__icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-5);
}

.product-card__icon img {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-icon);
}

.product-card__name {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-2);
}

.product-card__platform {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-60);
  background: var(--color-neutral-20);
  padding: 2px var(--space-2);
  border-radius: 100px;
  margin-bottom: var(--space-4);
}

.product-card__summary {
  font-size: var(--text-sm);
  color: var(--color-neutral-80);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-5);
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--product-color, var(--color-brand));
  transition: gap var(--transition-fast);
  position: relative;
  z-index: 1;
}

.product-card:hover .product-card__link {
  gap: var(--space-2);
}

/* ========================================
   Download & Marketplace Buttons
   ======================================== */

.btn-download,
.btn-marketplace,
.btn-github,
.btn-doc,
.btn-doc-ja {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  z-index: 1;
  white-space: nowrap;
}

.btn-download {
  padding: var(--space-3) var(--space-5);
  background: var(--color-brand-gradient);
  color: var(--color-neutral-0);
  box-shadow: 0 1px 3px rgba(86, 116, 185, 0.3);
}

.btn-download:hover {
  opacity: 0.88;
  color: var(--color-neutral-0);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(86, 116, 185, 0.35);
}

.btn-download--sm {
  padding: 5px var(--space-3);
  font-size: var(--text-xs);
  gap: 4px;
}

.btn-marketplace {
  padding: var(--space-3) var(--space-5);
  background: #0078D4;
  color: var(--color-neutral-0);
  box-shadow: 0 1px 3px rgba(0, 120, 212, 0.3);
}

.btn-marketplace:hover {
  opacity: 0.88;
  color: var(--color-neutral-0);
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 120, 212, 0.35);
}

.btn-marketplace--sm {
  padding: 5px var(--space-3);
  font-size: var(--text-xs);
  gap: 4px;
}

.btn-github {
  padding: var(--space-3) var(--space-5);
  background: transparent;
  color: var(--color-neutral-80);
  border: 1px solid var(--color-neutral-40);
}

.btn-github:hover {
  background: var(--color-neutral-20);
  color: var(--color-neutral-100);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
}

.btn-doc,
.btn-doc-ja {
  padding: var(--space-3) var(--space-5);
  background: transparent;
  color: var(--color-neutral-60);
  border: 1px solid var(--color-neutral-30);
}

.btn-doc:hover,
.btn-doc-ja:hover {
  background: var(--color-neutral-10);
  color: var(--color-neutral-80);
  transform: translateY(-1px);
}

.btn-coming-soon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-md);
  white-space: nowrap;
  color: var(--color-neutral-60);
  background: var(--color-neutral-20);
  border: 1px solid var(--color-neutral-30);
  cursor: default;
}

/* Hero actions (download / marketplace buttons) */
.product-hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.product-version {
  margin-top: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-neutral-60);
  letter-spacing: 0.01em;
}

/* ========================================
   8. Product Hero (Detail Page)
   ======================================== */

.product-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(
    135deg,
    rgba(var(--product-color-rgb, 0, 82, 204), 0.07) 0%,
    var(--color-neutral-0) 70%
  );
  border-bottom: 1px solid var(--color-neutral-30);
}

/* Screenshot decoration (right half) */
.product-hero__screenshot {
  position: absolute;
  right: 0;
  top: 0;
  width: 55%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  display: flex;
  align-items: center;
  padding: var(--space-6) var(--space-6) var(--space-6) 0;
  opacity: 0.8;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 70%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 70%
  );
}

.product-hero__screenshot img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: top right;
  border-radius: var(--radius-lg);
}

/* Ensure text content renders above screenshot */
.product-hero .container {
  position: relative;
  z-index: 1;
}

/* Fallback backgrounds per product (since color-mix has broad support now) */
.product-hero[data-product="agentlimits"] {
  background: linear-gradient(135deg, rgba(232, 89, 12, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="coverzip"] {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="timeslice"] {
  background: linear-gradient(135deg, rgba(22, 163, 74, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="leafmarq"] {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="leafthru"] {
  background: linear-gradient(135deg, rgba(239, 87, 80, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="comicapture"] {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="joyhackplayer"] {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="xojo-syntax"] {
  background: linear-gradient(135deg, rgba(101, 163, 13, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="apricot"] {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="agentbooth"] {
  background: linear-gradient(135deg, rgba(224, 64, 160, 0.07) 0%, var(--color-neutral-0) 70%);
}
.product-hero[data-product="porthole"] {
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.07) 0%, var(--color-neutral-0) 70%);
}

.product-hero__content {
  display: flex;
  align-items: flex-start;
  gap: var(--space-10);
}

.product-hero__icon {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-icon);
  flex-shrink: 0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.product-hero__text {
  flex: 1;
  min-width: 0;
}

.product-hero__name {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
  color: var(--color-neutral-100);
}

.product-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  padding: 3px var(--space-2);
  border-radius: 100px;
}

.badge--platform {
  color: var(--color-neutral-80);
  background: var(--color-neutral-20);
  border: 1px solid var(--color-neutral-30);
}

.badge--product {
  color: var(--product-color, var(--color-brand));
  background: color-mix(in srgb, var(--product-color, #7799dd) 10%, white);
  border: 1px solid color-mix(in srgb, var(--product-color, #7799dd) 20%, white);
}

/* Fallback badge backgrounds */
[data-product="agentlimits"] .badge--product {
  color: var(--color-agentlimits);
  background: rgba(232, 89, 12, 0.1);
  border-color: rgba(232, 89, 12, 0.2);
}
[data-product="coverzip"] .badge--product {
  color: var(--color-coverzip);
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.2);
}
[data-product="timeslice"] .badge--product {
  color: var(--color-timeslice);
  background: rgba(22, 163, 74, 0.1);
  border-color: rgba(22, 163, 74, 0.2);
}
[data-product="leafmarq"] .badge--product {
  color: var(--color-leafmarq);
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.2);
}
[data-product="leafthru"] .badge--product {
  color: var(--color-leafthru);
  background: rgba(239, 87, 80, 0.1);
  border-color: rgba(239, 87, 80, 0.2);
}
[data-product="comicapture"] .badge--product {
  color: var(--color-comicapture);
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.2);
}
[data-product="joyhackplayer"] .badge--product {
  color: var(--color-joyhackplayer);
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.2);
}
[data-product="xojo-syntax"] .badge--product {
  color: var(--color-xojo-syntax);
  background: rgba(101, 163, 13, 0.1);
  border-color: rgba(101, 163, 13, 0.2);
}
[data-product="apricot"] .badge--product {
  color: var(--color-apricot);
  background: rgba(249, 115, 22, 0.1);
  border-color: rgba(249, 115, 22, 0.2);
}
[data-product="agentbooth"] .badge--product {
  color: var(--color-agentbooth);
  background: rgba(224, 64, 160, 0.1);
  border-color: rgba(224, 64, 160, 0.2);
}
[data-product="porthole"] .badge--product {
  color: var(--color-porthole);
  background: rgba(8, 145, 178, 0.1);
  border-color: rgba(8, 145, 178, 0.2);
}

.product-hero__tagline {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-4);
}

.product-hero__description {
  font-size: var(--text-base);
  color: var(--color-neutral-60);
  line-height: 1.7;
  max-width: 600px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid rgba(160, 160, 160, 0.5);
  border-radius: var(--radius-md, 8px);
  padding: var(--space-3, 12px) var(--space-4, 16px);
}

/* ========================================
   9. Feature Cards (Detail Page)
   ======================================== */

.features-section {
  padding: var(--space-16) 0 var(--space-20);
}

.features-section__header {
  margin-bottom: var(--space-10);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-5);
}

.feature-card {
  background: var(--color-neutral-0);
  border: 1px solid var(--color-neutral-30);
  border-top: 3px solid var(--product-color, var(--color-brand));
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-neutral-40);
  transform: translateY(-4px);
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--feature-icon-bg, var(--color-brand-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--feature-icon-color, var(--color-brand));
  flex-shrink: 0;
}

.feature-card__icon svg {
  width: 22px;
  height: 22px;
}

.feature-card__title {
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-2);
}

.feature-card__description {
  font-size: var(--text-sm);
  color: var(--color-neutral-60);
  line-height: 1.6;
}

/* ========================================
   10. Back Link / Breadcrumb
   ======================================== */

.back-link-section {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-neutral-30);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-neutral-60);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--color-neutral-100);
}

/* ========================================
   11. Footer
   ======================================== */

.site-footer {
  background: var(--color-neutral-100);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-12) 0 var(--space-8);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

.footer-brand__logo {
  margin-bottom: var(--space-3);
  display: inline-flex;
  align-items: center;
}

.footer-brand__logo-image {
  display: block;
  width: 128px;
  height: auto;
  filter: brightness(0) invert(1);
}

.footer-brand__logo:hover {
  opacity: 0.85;
}

.footer-brand__tagline {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
}

.footer-col__heading {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-neutral-0);
}

.footer-link img {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-icon);
  flex-shrink: 0;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-4);
}

.footer-bottom-link {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition-fast);
}

.footer-bottom-link:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   12. Page Divider
   ======================================== */

.divider {
  height: 1px;
  background: var(--color-neutral-30);
  margin: 0;
}

/* ========================================
   13. Reduced Motion
   ======================================== */

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

  html {
    scroll-behavior: auto;
  }
}

/* ========================================
   14. Responsive (Mobile First)
   ======================================== */

/* Tablet: 768px */
@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background:
      linear-gradient(180deg, rgba(119, 153, 221, 0.12) 0%, rgba(255, 255, 255, 0.98) 96px),
      var(--color-neutral-0);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    overflow-y: auto;
    border-top: 1px solid var(--color-neutral-30);
  }

  .site-nav.open {
    display: flex;
  }

  .nav-link,
  .nav-dropdown-trigger,
  .locale-switch {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
    width: 100%;
  }

  .nav-link,
  .nav-dropdown-trigger {
    justify-content: flex-start;
  }

  .locale-switch {
    justify-content: space-between;
    gap: var(--space-2);
  }

  .locale-switch__link {
    flex: 1;
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--color-neutral-10);
    border-radius: var(--radius-md);
    margin-top: var(--space-1);
    padding: var(--space-2);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
    transform: none;
  }

  .hero {
    padding: var(--space-16) var(--space-4) var(--space-12);
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .product-hero__content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
  }

  .product-hero__icon {
    width: 88px;
    height: 88px;
  }

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

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Medium: 480px - 768px */
@media (min-width: 480px) and (max-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* Large: 1024px+ */
@media (min-width: 1024px) {
  .product-hero__icon {
    width: 140px;
    height: 140px;
  }
}

/* ========================================
   15. Manual Pages
   ======================================== */

/* Manual hero */
.manual-hero {
  padding: var(--space-10) 0 var(--space-8);
  border-bottom: 1px solid var(--color-neutral-30);
  background: linear-gradient(135deg, rgba(119, 153, 221, 0.05) 0%, var(--color-neutral-0) 70%);
}

.manual-hero[data-product="agentlimits"] {
  background: linear-gradient(135deg, rgba(232, 89, 12, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="coverzip"] {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="timeslice"] {
  background: linear-gradient(135deg, rgba(22, 163, 74, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="leafmarq"] {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="leafthru"] {
  background: linear-gradient(135deg, rgba(239, 87, 80, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="comicapture"] {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="joyhackplayer"] {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="xojo-syntax"] {
  background: linear-gradient(135deg, rgba(101, 163, 13, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="apricot"] {
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.05) 0%, var(--color-neutral-0) 70%);
}
.manual-hero[data-product="agentbooth"] {
  background: linear-gradient(135deg, rgba(224, 64, 160, 0.05) 0%, var(--color-neutral-0) 70%);
}

.manual-hero__inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.manual-hero__icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-icon);
  flex-shrink: 0;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.10);
}

.manual-hero__meta {
  flex: 1;
}

.manual-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-neutral-60);
  margin-bottom: var(--space-2);
}

.manual-hero__breadcrumb a {
  color: var(--color-neutral-60);
  transition: color var(--transition-fast);
}

.manual-hero__breadcrumb a:hover {
  color: var(--color-neutral-100);
}

.manual-hero__breadcrumb-sep {
  color: var(--color-neutral-40);
  font-size: var(--text-xs);
}

.manual-hero__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-neutral-100);
  margin-bottom: var(--space-2);
}

.manual-hero__desc {
  font-size: var(--text-sm);
  color: var(--color-neutral-60);
}

/* Manual body */
.manual-body {
  padding: var(--space-12) 0 var(--space-20);
}

.manual-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* Sidebar */
.manual-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
  max-height: calc(100vh - var(--header-height) - var(--space-12));
  overflow-y: auto;
}

.manual-toc__label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-neutral-60);
  margin-bottom: var(--space-3);
}

.manual-toc {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.manual-toc a {
  display: flex;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-neutral-60);
  padding: 5px var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  line-height: 1.4;
  text-decoration: none;
}

.manual-toc a:hover {
  color: var(--color-neutral-100);
  background-color: var(--color-neutral-10);
}

.manual-toc a.active {
  color: var(--product-color, var(--color-brand));
  font-weight: var(--weight-medium);
  border-left-color: var(--product-color, var(--color-brand));
  background-color: color-mix(in srgb, var(--product-color, var(--color-brand)) 8%, transparent);
}

.manual-toc__sub {
  list-style: none;
  padding-left: var(--space-4);
  margin-top: 1px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.manual-toc__sub a {
  font-size: var(--text-xs);
  padding: 3px var(--space-3);
}

/* Main content */
.manual-content {
  min-width: 0;
}

.manual-section {
  margin-bottom: var(--space-16);
  scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

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

.manual-section__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-neutral-100);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--product-color, var(--color-brand));
  margin-bottom: var(--space-6);
  line-height: 1.3;
}

.manual-subsection {
  margin-top: var(--space-8);
  scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

.manual-subsection__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-100);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.manual-subsection__title::before {
  content: '';
  display: block;
  width: 4px;
  height: 1.1em;
  background: var(--product-color, var(--color-brand));
  border-radius: 2px;
  flex-shrink: 0;
}

.manual-p {
  font-size: var(--text-base);
  color: var(--color-neutral-80);
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.manual-ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.manual-ul > li {
  position: relative;
  padding-left: calc(var(--space-3) + 6px);
  font-size: var(--text-base);
  color: var(--color-neutral-80);
  line-height: 1.65;
}

.manual-ul > li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--product-color, var(--color-brand));
}

.manual-ul--sm > li {
  font-size: var(--text-sm);
}

.manual-ol {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  counter-reset: step-counter;
  margin-bottom: var(--space-4);
}

.manual-ol > li {
  position: relative;
  padding-left: calc(var(--space-4) + 28px);
  font-size: var(--text-base);
  color: var(--color-neutral-80);
  line-height: 1.65;
  counter-increment: step-counter;
}

.manual-ol > li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--product-color, var(--color-brand));
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
}

.manual-code-block {
  background: var(--color-neutral-100);
  color: #E1E4E8;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.55;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: var(--space-4);
}

.manual-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-neutral-20);
  color: var(--color-neutral-100);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-neutral-30);
}

.manual-code-block code {
  background: none;
  color: inherit;
  padding: 0;
  border: none;
  border-radius: 0;
  font-size: inherit;
}

.manual-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  display: block;
}

.manual-callout {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  margin-bottom: var(--space-4);
}

.manual-callout--info {
  background: rgba(14, 165, 233, 0.06);
  border-color: #0EA5E9;
}

.manual-callout--warning {
  background: rgba(245, 158, 11, 0.06);
  border-color: #F59E0B;
}

.manual-callout p {
  font-size: var(--text-sm);
  color: var(--color-neutral-80);
  line-height: 1.6;
  margin: 0;
}

.manual-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.manual-table th {
  text-align: left;
  padding: var(--space-2) var(--space-4);
  border-bottom: 2px solid var(--color-neutral-30);
  font-weight: var(--weight-semibold);
  color: var(--color-neutral-100);
  background: var(--color-neutral-10);
  white-space: nowrap;
}

.manual-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-neutral-30);
  color: var(--color-neutral-80);
  vertical-align: top;
  line-height: 1.6;
}

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

/* Responsive */
@media (max-width: 900px) {
  .manual-layout {
    grid-template-columns: 1fr;
  }

  .manual-sidebar {
    position: static;
    max-height: none;
    background: var(--color-neutral-10);
    border: 1px solid var(--color-neutral-30);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
  }

  .manual-toc {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .manual-toc a {
    border: 1px solid var(--color-neutral-30);
    border-left-width: 1px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    padding: 3px var(--space-3);
  }

  .manual-toc a.active {
    border-left-width: 1px;
    border-color: var(--product-color, var(--color-brand));
  }

  .manual-toc__sub {
    display: none;
  }
}