/* ================================
   Custom Properties
   ================================ */

:root {
  color-scheme: light dark;

  /* カラーパレット */
  --black: #181818;
  --cream: #f8f5ee;
  --orange: #b2653b;
  --red: #802520;
  --yellow: #ba8530;
  --green: #5c7f71;

  /* セマンティックトークン（Light） */
  --bg-primary: var(--cream);
  --fg-primary: var(--black);
  --fg-dim: #6b6257;
  --accent: var(--orange);
  --bd-primary: #c8c0b0;
  --bd-accent: var(--orange);

  /* フォント */
  --font-primary: 'Jost', 'M PLUS 1', 'Futura', system-ui, sans-serif;

  /* タイポグラフィ（Fluid） */
  --text-h1: clamp(42px, 6vw, 72px);
  --text-h2: clamp(24px, 3vw, 36px);

  /* スペーシング（Fluid） */
  --space-xs: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
  --space-sm: clamp(0.75rem, 0.6rem + 0.75vw, 1rem);
  --space-md: clamp(1rem, 0.8rem + 1vw, 1.5rem);
  --space-lg: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  --space-xl: clamp(2rem, 1.5rem + 2.5vw, 4rem);

  /* グリッド */
  --grid-max: 1120px;
  --grid-gap: 24px;
  --header-h: 72px;

  /* Z-index */
  --z-sticky: 200;
  --z-modal: 500;
  --z-scan: 9999;

  /* トランジション */
  --transition-base: 0.2s ease;
}

/* OS Dark 連動（手動 Light 上書き時は除外） */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg-primary: var(--black);
    --fg-primary: var(--cream);
    --fg-dim: #a09882;
    --bd-primary: #333;
  }
}

/* 手動 Dark 上書き */
[data-theme='dark'] {
  --bg-primary: var(--black);
  --fg-primary: var(--cream);
  --fg-dim: #a09882;
  --bd-primary: #333;
}

/* 手動 Light 上書き（OS Dark 時の強制 Light 用） */
[data-theme='light'] {
  --bg-primary: var(--cream);
  --fg-primary: var(--black);
  --fg-dim: #6b6257;
  --bd-primary: #c8c0b0;
}

/* ================================
   Reset
   ================================ */

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

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
  text-wrap: balance;
}

p {
  overflow-wrap: break-word;
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration-skip-ink: auto;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
    scroll-behavior: auto;
  }
}

/* ================================
   Base
   ================================ */

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  min-height: 100dvh;
  overflow-x: hidden;
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--fg-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ================================
   Scanline Overlay
   ================================ */

.u-bg-scan {
  position: fixed;
  inset: 0;
  z-index: var(--z-scan);
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgb(0 0 0 / 3%) 2px,
    rgb(0 0 0 / 3%) 4px
  );
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) .u-bg-scan {
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgb(0 0 0 / 1.5%) 2px,
      rgb(0 0 0 / 1.5%) 4px
    );
  }
}

[data-theme='light'] .u-bg-scan {
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgb(0 0 0 / 1.5%) 2px,
    rgb(0 0 0 / 1.5%) 4px
  );
}

/* ================================
   Punch Tape Pattern
   ================================ */

.u-punch-tape {
  position: fixed;
  top: 0;
  right: 40px;
  z-index: -1;
  width: 48px;
  height: 100vh;
  pointer-events: none;
  opacity: 0.06;
  background-image:
    radial-gradient(
      circle 4px at 12px 12px,
      var(--fg-primary) 3px,
      transparent 3px
    ),
    radial-gradient(
      circle 4px at 36px 12px,
      var(--fg-primary) 3px,
      transparent 3px
    ),
    radial-gradient(
      circle 2px at 24px 12px,
      var(--fg-primary) 1.5px,
      transparent 1.5px
    );
  background-size: 48px 24px;
}

/* ================================
   Layout
   ================================ */

.l-page {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100dvh;
}

.l-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--bg-primary);
}

.l-header__inner {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  max-width: var(--grid-max);
  height: var(--header-h);
  padding: 0 var(--grid-gap);
  margin: 0 auto;
}

.l-header__actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.l-main {
  display: flex;
  flex-direction: column;
}

.l-footer {
  margin-top: clamp(64px, 8vw, 100px);
}

.l-footer__copy {
  padding: 40px var(--grid-gap);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-align: center;
  color: var(--fg-dim);
}

.l-footer__sep {
  margin: 0 0.5em;
}

.l-footer__link {
  color: var(--fg-dim);
  text-decoration: none;
  transition: color var(--transition-base);
}

.l-footer__link:hover {
  color: var(--accent);
}

.l-footer__link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ================================
   Component: Stripe
   ================================ */

.c-stripe {
  display: flex;
  height: 4px;
}

.c-stripe__band {
  flex: 1;
}

.c-stripe__band--red {
  background-color: var(--red);
}

.c-stripe__band--yellow {
  background-color: var(--yellow);
}

.c-stripe__band--green {
  background-color: var(--green);
}

/* ================================
   Component: Brand
   ================================ */

.c-brand {
  display: inline-flex;
  gap: 14px;
  align-items: center;
  text-decoration: none;
}

.c-brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
}

.c-brand__h {
  fill: var(--fg-primary);
}

.c-brand__one {
  fill: var(--accent);
}

.c-brand__text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

/* ================================
   Component: Select
   ================================ */

.c-select {
  display: flex;
  gap: 6px;
  align-items: center;
}

.c-select__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.c-select__control {
  padding: 6px 24px 6px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  appearance: none;
  background-color: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5'%3E%3Cpath fill='%23B2653B' d='M0 0l4 5 4-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  border: 1px solid var(--bd-primary);
  border-radius: 0;
}

.c-select__control:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ================================
   Component: Theme Toggle
   ================================ */

.c-theme-toggle {
  display: flex;
  gap: 8px;
  align-items: center;
  cursor: pointer;
  background: none;
  border: none;
}

.c-theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.c-theme-toggle__track {
  position: relative;
  width: 36px;
  height: 20px;
  background-color: var(--bd-primary);
  border-radius: 10px;
  transition: background-color var(--transition-base);
}

.c-theme-toggle__knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background-color: var(--fg-primary);
  border-radius: 50%;
  transition: transform var(--transition-base);
}

/* OS Light 連動時のknob位置 */
@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) .c-theme-toggle__knob {
    transform: translateX(16px);
  }

  :root:not([data-theme='dark']) .c-theme-toggle__track {
    background-color: var(--accent);
  }
}

/* 手動 Light 時のknob位置 */
[data-theme='light'] .c-theme-toggle__knob {
  transform: translateX(16px);
}

[data-theme='light'] .c-theme-toggle__track {
  background-color: var(--accent);
}

.c-theme-toggle__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--fg-dim);
}

/* ================================
   Component: Button
   ================================ */

.c-button {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 12px 24px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  border: 1px solid var(--bd-primary);
  transition: all 0.15s;
}

.c-button--primary {
  color: var(--bg-primary);
  background-color: var(--accent);
  border-color: var(--accent);
}

.c-button--primary:hover {
  filter: brightness(1.15);
}

.c-button--primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.c-button--ghost {
  background-color: transparent;
}

.c-button--ghost:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.c-button__indicator {
  display: block;
  width: 6px;
  height: 6px;
  background-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@media (forced-colors: active) {
  .c-button--primary {
    border: 1px solid buttontext;
  }
}

/* ================================
   Component: Link
   ================================ */

.c-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--fg-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--fg-primary);
}

/* 外部リンクアイコン */
a[target='_blank']::after {
  display: inline-block;
  width: 0.75em;
  height: 0.75em;
  margin-left: 0.25em;
  vertical-align: middle;
  content: '';
  background-color: currentcolor;
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
}

/* ================================
   Component: App Card
   ================================ */

.c-app-card {
  padding: 32px;
  border: 1px solid var(--bd-primary);
}

.c-app-card--soon {
  border-style: dashed;
}

.c-app-card__status {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.c-app-card__indicator {
  display: block;
  width: 6px;
  height: 6px;
  background-color: var(--yellow);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--yellow);
  animation: pulse 2s ease-in-out infinite;
}

.c-app-card__title {
  margin-bottom: 8px;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.c-app-card__desc {
  max-width: 400px;
  font-weight: 300;
  color: var(--fg-dim);
}

/* ================================
   Component: Contact
   ================================ */

.c-contact {
  max-width: var(--grid-max);
  padding-top: 40px;
  margin: 0 auto;
}

.c-contact__row {
  display: flex;
  gap: 24px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--bd-primary);
}

.c-contact__row:last-child {
  border-bottom: none;
}

.c-contact__label {
  flex-shrink: 0;
  width: 100px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.c-contact__value {
  font-weight: 400;
  color: var(--fg-dim);
}

.c-contact__value--active {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--green);
}

/* stylelint-disable-next-line no-descending-specificity */
.c-contact__value a {
  color: var(--accent);
  text-decoration: underline;
  transition: opacity var(--transition-base);
}

.c-contact__value a:hover {
  opacity: 0.85;
}

.c-contact__value a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.c-contact__beacon {
  display: block;
  width: 6px;
  height: 6px;
  background-color: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

@keyframes orbit-cw {
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbit-ccw {
  to {
    transform: rotate(-360deg);
  }
}

/* ================================
   Component: Orbit
   ================================ */

.c-orbit {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 400px;
  margin: 0 auto;
}

.c-orbit__ring {
  position: absolute;
  border: 1px solid var(--bd-primary);
  border-radius: 50%;
}

.c-orbit__group {
  position: absolute;
  inset: 0;
}

.c-orbit__group--outer {
  animation: orbit-cw 60s linear infinite;
}

.c-orbit__group--mid {
  animation: orbit-ccw 45s linear infinite;
}

.c-orbit__group--inner {
  animation: orbit-cw 30s linear infinite;
}

.c-orbit__ring--outer {
  inset: 10%;
  border-color: var(--accent);
  opacity: 0.3;
}

.c-orbit__ring--mid {
  inset: 25%;
  opacity: 0.5;
}

.c-orbit__ring--inner {
  inset: 42%;
  border-color: var(--accent);
  opacity: 0.15;
}

.c-orbit__dot {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.c-orbit__dot--a {
  top: 8%;
  left: 62%;
  background-color: var(--accent);
}

.c-orbit__dot--b {
  top: 50%;
  right: 24%;
  width: 7px;
  height: 7px;
  background-color: var(--yellow);
}

.c-orbit__dot--c {
  bottom: 40%;
  left: 46%;
  width: 5px;
  height: 5px;
  background-color: var(--green);
}

.c-orbit__triangle {
  position: absolute;
  bottom: 8%;
  left: 30%;
  width: 0;
  height: 0;
  border-right: 28px solid transparent;
  border-bottom: 48px solid var(--fg-primary);
  border-left: 28px solid transparent;
  opacity: 0.08;
}

.c-orbit__square {
  position: absolute;
  top: 24%;
  left: 30%;
  width: 36px;
  height: 36px;
  border: 2px solid var(--accent);
  opacity: 0.2;
  transform: rotate(15deg);
}

/* ================================
   Component: Carousel
   ================================ */

.c-carousel {
  position: relative;
}

.c-carousel__track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.c-carousel__track::-webkit-scrollbar {
  display: none;
}

.c-carousel__slide {
  flex: 0 0 100%;
  min-width: 0;
  scroll-snap-align: start;
}

.c-carousel__slide img {
  width: 100%;
  height: auto;
}

.c-carousel__prev,
.c-carousel__next {
  position: absolute;
  top: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  cursor: pointer;
  background-color: var(--bg-primary);
  border: 1px solid var(--bd-primary);
  opacity: 0.9;
  transform: translateY(-50%);
  transition:
    background-color var(--transition-base),
    opacity var(--transition-base);
}

.c-carousel__prev {
  left: 8px;
}

.c-carousel__next {
  right: 8px;
}

.c-carousel__prev:hover,
.c-carousel__next:hover {
  opacity: 1;
}

.c-carousel__prev:focus-visible,
.c-carousel__next:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ================================
   Project: Error
   ================================ */

.p-error {
  display: grid;
  flex: 1;
  place-items: center;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}

.p-error__title {
  margin-bottom: var(--space-sm);
  font-size: var(--text-h1);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.p-error__description {
  margin-bottom: var(--space-md);
  color: var(--fg-dim);
}

.p-error__action {
  margin-top: var(--space-sm);
}

/* ================================
   Project: Privacy
   ================================ */

.p-privacy {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(48px, 6vw, 80px) var(--grid-gap) clamp(40px, 5vw, 60px);
}

.p-privacy__title {
  margin-bottom: var(--space-xs);
  font-size: var(--text-h1);
  font-weight: 900;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.p-privacy__date {
  margin-bottom: var(--space-xl);
  color: var(--fg-dim);
  font-size: 14px;
}

.p-privacy__heading {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  font-size: var(--text-h2);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.p-privacy__text {
  margin-bottom: var(--space-sm);
  line-height: 1.7;
  color: var(--fg-dim);
}

.p-privacy__list {
  margin-bottom: var(--space-sm);
  padding-left: 1.5em;
  line-height: 1.7;
}

.p-privacy__list li {
  margin-bottom: var(--space-xs);
}

.p-privacy__link {
  color: var(--accent);
  text-decoration: underline;
}

.p-privacy__link:hover {
  opacity: 0.85;
}

/* ================================
   Project: Hero
   ================================ */

.p-hero {
  padding: clamp(48px, 6vw, 80px) var(--grid-gap) clamp(40px, 5vw, 60px);
}

.p-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 60px);
  align-items: center;
  max-width: var(--grid-max);
  margin: 0 auto;
}

.p-hero__eyebrow {
  margin-bottom: 20px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.p-hero__title {
  margin-bottom: 28px;
  font-size: var(--text-h1);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.p-hero__title--thin {
  font-weight: 200;
  letter-spacing: 0.08em;
}

.p-hero__dot {
  color: var(--accent);
}

.p-hero__lead {
  max-width: 460px;
  margin-bottom: 36px;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.7;
  color: var(--fg-dim);
}

.p-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ================================
   Project: Section
   ================================ */

.p-section {
  padding: clamp(64px, 8vw, 100px) var(--grid-gap) 0;
}

.p-section__header {
  display: flex;
  gap: 20px;
  align-items: baseline;
  max-width: var(--grid-max);
  padding-bottom: 32px;
  margin: 0 auto;
  border-bottom: 1px solid var(--bd-primary);
}

.p-section__index {
  font-size: 48px;
  font-weight: 200;
  line-height: 1;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0.4;
}

.p-section__eyebrow {
  margin-bottom: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.p-section__title {
  font-size: var(--text-h2);
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

/* ================================
   Project: Apps
   ================================ */

.p-apps {
  max-width: var(--grid-max);
  padding-top: 40px;
  margin: 0 auto;
}

/* ================================
   Utility
   ================================ */

.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.u-skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.u-skip-link:focus {
  position: fixed;
  top: var(--space-xs);
  left: var(--space-xs);
  z-index: var(--z-modal);
  width: auto;
  height: auto;
  padding: var(--space-xs) var(--space-sm);
  margin: 0;
  overflow: visible;
  font-weight: 700;
  color: var(--fg-primary);
  clip-path: none;
  white-space: normal;
  background-color: var(--bg-primary);
  border: 1px solid var(--accent);
}

/* ================================
   Responsive
   ================================ */

@media (width <= 767px) {
  .l-header__inner {
    height: auto;
    padding: 16px var(--grid-gap);
  }

  .c-brand__text {
    font-size: 15px;
  }

  .p-hero {
    padding: 40px var(--grid-gap) 32px;
  }

  .p-hero__graphic {
    display: none;
  }

  .p-section__index {
    font-size: 32px;
  }

  .c-contact__row {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }
}

/* タブレット（768-959px） */
@media (768px <= width <= 959px) {
  .p-hero__grid {
    grid-template-columns: 1fr 1fr;
  }

  .l-footer {
    margin-top: 80px;
  }
}

/* PC（960px以上） */
@media (width >= 960px) {
  .p-hero__grid {
    grid-template-columns: 7fr 5fr;
  }
}